diff options
Diffstat (limited to 'src/st/croco')
50 files changed, 24529 insertions, 0 deletions
diff --git a/src/st/croco/cr-additional-sel.c b/src/st/croco/cr-additional-sel.c new file mode 100644 index 0000000..9bd8d6a --- /dev/null +++ b/src/st/croco/cr-additional-sel.c @@ -0,0 +1,498 @@ +/* -*- Mode: C; indent-tabs-mode:nil; c-basic-offset: 8-*- */ + +/* + * This file is part of The Croco Library + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of version 2.1 of the GNU Lesser General Public + * License as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 + * USA + * + * Author: Dodji Seketeli + * See COPYRIGHTS file for copyright information. + * + */ + +#include "cr-additional-sel.h" +#include "string.h" + +/** + * CRAdditionalSel: + * + * #CRAdditionalSel abstracts an additional selector. + * An additional selector is the selector part + * that comes after the combination of type selectors. + * It can be either "a class selector (the .class part), + * a pseudo class selector, an attribute selector + * or an id selector. + */ + +/** + * cr_additional_sel_new: + * + * Default constructor of #CRAdditionalSel. + * Returns the newly build instance of #CRAdditionalSel. + */ +CRAdditionalSel * +cr_additional_sel_new (void) +{ + CRAdditionalSel *result = NULL; + + result = g_try_malloc (sizeof (CRAdditionalSel)); + + if (result == NULL) { + cr_utils_trace_debug ("Out of memory"); + return NULL; + } + + memset (result, 0, sizeof (CRAdditionalSel)); + + return result; +} + +/** + * cr_additional_sel_new_with_type: + * @a_sel_type: the type of the newly built instance + * of #CRAdditionalSel. + * + * Constructor of #CRAdditionalSel. + * Returns the newly built instance of #CRAdditionalSel. + */ +CRAdditionalSel * +cr_additional_sel_new_with_type (enum AddSelectorType a_sel_type) +{ + CRAdditionalSel *result = NULL; + + result = cr_additional_sel_new (); + + g_return_val_if_fail (result, NULL); + + result->type = a_sel_type; + + return result; +} + +/** + * cr_additional_sel_set_class_name: + * @a_this: the "this pointer" of the current instance + * of #CRAdditionalSel . + * @a_class_name: the new class name to set. + * + * Sets a new class name to a + * CLASS additional selector. + */ +void +cr_additional_sel_set_class_name (CRAdditionalSel * a_this, + CRString * a_class_name) +{ + g_return_if_fail (a_this && a_this->type == CLASS_ADD_SELECTOR); + + if (a_this->content.class_name) { + cr_string_destroy (a_this->content.class_name); + } + + a_this->content.class_name = a_class_name; +} + +/** + * cr_additional_sel_set_id_name: + * @a_this: the "this pointer" of the current instance + * of #CRAdditionalSel . + * @a_id: the new id to set. + * + * Sets a new id name to an + * ID additional selector. + */ +void +cr_additional_sel_set_id_name (CRAdditionalSel * a_this, CRString * a_id) +{ + g_return_if_fail (a_this && a_this->type == ID_ADD_SELECTOR); + + if (a_this->content.id_name) { + cr_string_destroy (a_this->content.id_name); + } + + a_this->content.id_name = a_id; +} + +/** + * cr_additional_sel_set_pseudo: + * @a_this: the "this pointer" of the current instance + * of #CRAdditionalSel . + * @a_pseudo: the new pseudo to set. + * + * Sets a new pseudo to a + * PSEUDO additional selector. + */ +void +cr_additional_sel_set_pseudo (CRAdditionalSel * a_this, CRPseudo * a_pseudo) +{ + g_return_if_fail (a_this + && a_this->type == PSEUDO_CLASS_ADD_SELECTOR); + + if (a_this->content.pseudo) { + cr_pseudo_destroy (a_this->content.pseudo); + } + + a_this->content.pseudo = a_pseudo; +} + +/** + * cr_additional_sel_set_attr_sel: + * @a_this: the "this pointer" of the current instance + * of #CRAdditionalSel . + * @a_sel: the new instance of #CRAttrSel to set. + * + * Sets a new instance of #CRAttrSel to + * a ATTRIBUTE additional selector. + */ +void +cr_additional_sel_set_attr_sel (CRAdditionalSel * a_this, CRAttrSel * a_sel) +{ + g_return_if_fail (a_this && a_this->type == ATTRIBUTE_ADD_SELECTOR); + + if (a_this->content.attr_sel) { + cr_attr_sel_destroy (a_this->content.attr_sel); + } + + a_this->content.attr_sel = a_sel; +} + +/** + * cr_additional_sel_append: + * @a_this: the "this pointer" of the current instance + * of #CRAdditionalSel . + * @a_sel: the new instance to #CRAdditional to append. + * + * Appends a new instance of #CRAdditional to the + * current list of #CRAdditional. + * + * Returns the new list of CRAdditionalSel or NULL if an error arises. + */ +CRAdditionalSel * +cr_additional_sel_append (CRAdditionalSel * a_this, CRAdditionalSel * a_sel) +{ + CRAdditionalSel *cur_sel = NULL; + + g_return_val_if_fail (a_sel, NULL); + + if (a_this == NULL) { + return a_sel; + } + + if (a_sel == NULL) + return NULL; + + for (cur_sel = a_this; + cur_sel && cur_sel->next; cur_sel = cur_sel->next) ; + + g_return_val_if_fail (cur_sel != NULL, NULL); + + cur_sel->next = a_sel; + a_sel->prev = cur_sel; + + return a_this; +} + +/** + * cr_additional_sel_prepend: + * @a_this: the "this pointer" of the current instance + * of #CRAdditionalSel . + * @a_sel: the new instance to #CRAdditional to preappend. + * + * Preppends a new instance of #CRAdditional to the + * current list of #CRAdditional. + * + * Returns the new list of CRAdditionalSel or NULL if an error arises. + */ +CRAdditionalSel * +cr_additional_sel_prepend (CRAdditionalSel * a_this, CRAdditionalSel * a_sel) +{ + g_return_val_if_fail (a_sel, NULL); + + if (a_this == NULL) { + return a_sel; + } + + a_sel->next = a_this; + a_this->prev = a_sel; + + return a_sel; +} + +guchar * +cr_additional_sel_to_string (CRAdditionalSel const * a_this) +{ + guchar *result = NULL; + GString *str_buf = NULL; + CRAdditionalSel const *cur = NULL; + + g_return_val_if_fail (a_this, NULL); + + str_buf = g_string_new (NULL); + + for (cur = a_this; cur; cur = cur->next) { + switch (cur->type) { + case CLASS_ADD_SELECTOR: + { + guchar *name = NULL; + + if (cur->content.class_name) { + name = (guchar *) g_strndup + (cur->content.class_name->stryng->str, + cur->content.class_name->stryng->len); + + if (name) { + g_string_append_printf + (str_buf, ".%s", + name); + g_free (name); + name = NULL; + } + } + } + break; + + case ID_ADD_SELECTOR: + { + guchar *name = NULL; + + if (cur->content.id_name) { + name = (guchar *) g_strndup + (cur->content.id_name->stryng->str, + cur->content.id_name->stryng->len); + + if (name) { + g_string_append_printf + (str_buf, "#%s", + name); + g_free (name); + name = NULL; + } + } + } + + break; + + case PSEUDO_CLASS_ADD_SELECTOR: + { + if (cur->content.pseudo) { + guchar *tmp_str = NULL; + + tmp_str = cr_pseudo_to_string + (cur->content.pseudo); + if (tmp_str) { + g_string_append_printf + (str_buf, ":%s", + tmp_str); + g_free (tmp_str); + tmp_str = NULL; + } + } + } + break; + + case ATTRIBUTE_ADD_SELECTOR: + if (cur->content.attr_sel) { + guchar *tmp_str = NULL; + + g_string_append_c (str_buf, '['); + tmp_str = cr_attr_sel_to_string + (cur->content.attr_sel); + if (tmp_str) { + g_string_append_printf + (str_buf, "%s]", tmp_str); + g_free (tmp_str); + tmp_str = NULL; + } + } + break; + + default: + break; + } + } + + if (str_buf) { + result = (guchar *) g_string_free (str_buf, FALSE); + str_buf = NULL; + } + + return result; +} + +guchar * +cr_additional_sel_one_to_string (CRAdditionalSel const *a_this) +{ + guchar *result = NULL; + GString *str_buf = NULL; + + g_return_val_if_fail (a_this, NULL) ; + + str_buf = g_string_new (NULL) ; + + switch (a_this->type) { + case CLASS_ADD_SELECTOR: + { + guchar *name = NULL; + + if (a_this->content.class_name) { + name = (guchar *) g_strndup + (a_this->content.class_name->stryng->str, + a_this->content.class_name->stryng->len); + + if (name) { + g_string_append_printf + (str_buf, ".%s", + name); + g_free (name); + name = NULL; + } + } + } + break; + + case ID_ADD_SELECTOR: + { + guchar *name = NULL; + + if (a_this->content.id_name) { + name = (guchar *) g_strndup + (a_this->content.id_name->stryng->str, + a_this->content.id_name->stryng->len); + + if (name) { + g_string_append_printf + (str_buf, "#%s", + name); + g_free (name); + name = NULL; + } + } + } + + break; + + case PSEUDO_CLASS_ADD_SELECTOR: + { + if (a_this->content.pseudo) { + guchar *tmp_str = NULL; + + tmp_str = cr_pseudo_to_string + (a_this->content.pseudo); + if (tmp_str) { + g_string_append_printf + (str_buf, ":%s", + tmp_str); + g_free (tmp_str); + tmp_str = NULL; + } + } + } + break; + + case ATTRIBUTE_ADD_SELECTOR: + if (a_this->content.attr_sel) { + guchar *tmp_str = NULL; + + g_string_append_printf (str_buf, "["); + tmp_str = cr_attr_sel_to_string + (a_this->content.attr_sel); + if (tmp_str) { + g_string_append_printf + (str_buf, "%s]", tmp_str); + g_free (tmp_str); + tmp_str = NULL; + } + } + break; + + default: + break; + } + + if (str_buf) { + result = (guchar *) g_string_free (str_buf, FALSE); + str_buf = NULL; + } + + return result; +} + +/** + * cr_additional_sel_dump: + * @a_this: the "this pointer" of the current instance of + * #CRAdditionalSel. + * @a_fp: the destination file. + * + * Dumps the current instance of #CRAdditionalSel to a file + */ +void +cr_additional_sel_dump (CRAdditionalSel const * a_this, FILE * a_fp) +{ + guchar *tmp_str = NULL; + + g_return_if_fail (a_fp); + + if (a_this) { + tmp_str = cr_additional_sel_to_string (a_this); + if (tmp_str) { + fprintf (a_fp, "%s", tmp_str); + g_free (tmp_str); + tmp_str = NULL; + } + } +} + +/** + * cr_additional_sel_destroy: + * @a_this: the "this pointer" of the current instance + * of #CRAdditionalSel . + * + * Destroys an instance of #CRAdditional. + */ +void +cr_additional_sel_destroy (CRAdditionalSel * a_this) +{ + g_return_if_fail (a_this); + + switch (a_this->type) { + case CLASS_ADD_SELECTOR: + cr_string_destroy (a_this->content.class_name); + a_this->content.class_name = NULL; + break; + + case PSEUDO_CLASS_ADD_SELECTOR: + cr_pseudo_destroy (a_this->content.pseudo); + a_this->content.pseudo = NULL; + break; + + case ID_ADD_SELECTOR: + cr_string_destroy (a_this->content.id_name); + a_this->content.id_name = NULL; + break; + + case ATTRIBUTE_ADD_SELECTOR: + cr_attr_sel_destroy (a_this->content.attr_sel); + a_this->content.attr_sel = NULL; + break; + + default: + break; + } + + if (a_this->next) { + cr_additional_sel_destroy (a_this->next); + } + + g_free (a_this); +} diff --git a/src/st/croco/cr-additional-sel.h b/src/st/croco/cr-additional-sel.h new file mode 100644 index 0000000..7ca3e07 --- /dev/null +++ b/src/st/croco/cr-additional-sel.h @@ -0,0 +1,98 @@ +/* -*- Mode: C; indent-tabs-mode:nil; c-basic-offset: 8-*- */ + +/* + * This file is part of The Croco Library + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of version 2.1 of the GNU Lesser General Public + * License as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 + * USA + * + * Author: Dodji Seketeli + * See the COPYRIGHTS file for copyright information. + */ + + +#ifndef __CR_ADD_SEL_H__ +#define __CR_ADD_SEL_H__ + +#include <stdio.h> +#include <glib.h> +#include "cr-utils.h" +#include "cr-attr-sel.h" +#include "cr-pseudo.h" +#include "cr-additional-sel.h" + +G_BEGIN_DECLS + +enum AddSelectorType +{ + NO_ADD_SELECTOR = 0 , + CLASS_ADD_SELECTOR = 1 , + PSEUDO_CLASS_ADD_SELECTOR = 1 << 1, + ID_ADD_SELECTOR = 1 << 3, + ATTRIBUTE_ADD_SELECTOR = 1 << 4 +} ; + +union CRAdditionalSelectorContent +{ + CRString *class_name ; + CRString *id_name ; + CRPseudo *pseudo ; + CRAttrSel *attr_sel ; +} ; + +typedef struct _CRAdditionalSel CRAdditionalSel ; + +struct _CRAdditionalSel +{ + enum AddSelectorType type ; + union CRAdditionalSelectorContent content ; + + CRAdditionalSel * next ; + CRAdditionalSel * prev ; + CRParsingLocation location ; +} ; + +CRAdditionalSel * cr_additional_sel_new (void) ; + +CRAdditionalSel * cr_additional_sel_new_with_type (enum AddSelectorType a_sel_type) ; + +CRAdditionalSel * cr_additional_sel_append (CRAdditionalSel *a_this, + CRAdditionalSel *a_sel) ; + +void cr_additional_sel_set_class_name (CRAdditionalSel *a_this, + CRString *a_class_name) ; + +void cr_additional_sel_set_id_name (CRAdditionalSel *a_this, + CRString *a_id) ; + +void cr_additional_sel_set_pseudo (CRAdditionalSel *a_this, + CRPseudo *a_pseudo) ; + +void cr_additional_sel_set_attr_sel (CRAdditionalSel *a_this, + CRAttrSel *a_sel) ; + +CRAdditionalSel * cr_additional_sel_prepend (CRAdditionalSel *a_this, + CRAdditionalSel *a_sel) ; + +guchar * cr_additional_sel_to_string (CRAdditionalSel const *a_this) ; + +guchar * cr_additional_sel_one_to_string (CRAdditionalSel const *a_this) ; + +void cr_additional_sel_dump (CRAdditionalSel const *a_this, FILE *a_fp) ; + +void cr_additional_sel_destroy (CRAdditionalSel *a_this) ; + +G_END_DECLS + +#endif /*__CR_ADD_SEL_H*/ diff --git a/src/st/croco/cr-attr-sel.c b/src/st/croco/cr-attr-sel.c new file mode 100644 index 0000000..fc8e6ef --- /dev/null +++ b/src/st/croco/cr-attr-sel.c @@ -0,0 +1,234 @@ +/* -*- Mode: C; indent-tabs-mode:nil; c-basic-offset: 8-*- */ + +/* + * This file is part of The Croco Library + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of version 2.1 of the GNU Lesser General Public + * License as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 + * USA + * + * See COPYRIGHTS file for copyrights information. + */ + +#include <stdio.h> +#include "cr-attr-sel.h" + +/** + * CRAttrSel: + * + * #CRAdditionalSel abstracts an attribute selector. + * Attributes selectors are described in the css2 spec [5.8]. + * There are more generally used in the css2 selectors described in + * css2 spec [5] . + */ + +/** + * cr_attr_sel_new: + * The constructor of #CRAttrSel. + * Returns the newly allocated instance + * of #CRAttrSel. + */ +CRAttrSel * +cr_attr_sel_new (void) +{ + CRAttrSel *result = NULL; + + result = g_malloc0 (sizeof (CRAttrSel)); + + return result; +} + +/** + * cr_attr_sel_append_attr_sel: + * @a_this: the this pointer of the current instance of #CRAttrSel. + * @a_attr_sel: selector to append. + * + * Appends an attribute selector to the current list of + * attribute selectors represented by a_this. + * Returns CR_OK upon successful completion, an error code otherwise. + */ +enum CRStatus +cr_attr_sel_append_attr_sel (CRAttrSel * a_this, CRAttrSel * a_attr_sel) +{ + CRAttrSel *cur_sel = NULL; + + g_return_val_if_fail (a_this && a_attr_sel, + CR_BAD_PARAM_ERROR); + + for (cur_sel = a_this; + cur_sel->next; + cur_sel = cur_sel->next) ; + + cur_sel->next = a_attr_sel; + a_attr_sel->prev = cur_sel; + + return CR_OK; +} + +/** + * cr_attr_sel_prepend_attr_sel: + *@a_this: the "this pointer" of the current instance *of #CRAttrSel. + *@a_attr_sel: the attribute selector to append. + * + *Prepends an attribute selector to the list of + *attributes selector represented by a_this. + *Returns CR_OK upon successful completion, an error code otherwise. + */ +enum CRStatus +cr_attr_sel_prepend_attr_sel (CRAttrSel * a_this, + CRAttrSel * a_attr_sel) +{ + g_return_val_if_fail (a_this && a_attr_sel, + CR_BAD_PARAM_ERROR); + + a_attr_sel->next = a_this; + a_this->prev = a_attr_sel; + + return CR_OK; +} + +/** + * cr_attr_sel_to_string: + * @a_this: the current instance of #CRAttrSel. + * + * Serializes an attribute selector into a string + * Returns the serialized attribute selector. + */ +guchar * +cr_attr_sel_to_string (CRAttrSel const * a_this) +{ + CRAttrSel const *cur = NULL; + guchar *result = NULL; + GString *str_buf = NULL; + + g_return_val_if_fail (a_this, NULL); + + str_buf = g_string_new (NULL); + + for (cur = a_this; cur; cur = cur->next) { + if (cur->prev) { + g_string_append_c (str_buf, ' '); + } + + if (cur->name) { + guchar *name = NULL; + + name = (guchar *) g_strndup (cur->name->stryng->str, + cur->name->stryng->len); + if (name) { + g_string_append (str_buf, (const gchar *) name); + g_free (name); + name = NULL; + } + } + + if (cur->value) { + guchar *value = NULL; + + value = (guchar *) g_strndup (cur->value->stryng->str, + cur->value->stryng->len); + if (value) { + switch (cur->match_way) { + case SET: + break; + + case EQUALS: + g_string_append_c (str_buf, '='); + break; + + case INCLUDES: + g_string_append (str_buf, "~="); + break; + + case DASHMATCH: + g_string_append (str_buf, "|="); + break; + + default: + break; + } + + g_string_append_printf + (str_buf, "\"%s\"", value); + + g_free (value); + value = NULL; + } + } + } + + if (str_buf) { + result = (guchar *) g_string_free (str_buf, FALSE); + } + + return result; +} + +/** + * cr_attr_sel_dump: + * @a_this: the "this pointer" of the current instance of + * #CRAttrSel. + * @a_fp: the destination file. + * + * Dumps the current instance of #CRAttrSel to a file. + */ +void +cr_attr_sel_dump (CRAttrSel const * a_this, FILE * a_fp) +{ + guchar *tmp_str = NULL; + + g_return_if_fail (a_this); + + tmp_str = cr_attr_sel_to_string (a_this); + + if (tmp_str) { + fprintf (a_fp, "%s", tmp_str); + g_free (tmp_str); + tmp_str = NULL; + } +} + +/** + *cr_attr_sel_destroy: + *@a_this: the "this pointer" of the current + *instance of #CRAttrSel. + * + *Destroys the current instance of #CRAttrSel. + *Frees all the fields if they are non null. + */ +void +cr_attr_sel_destroy (CRAttrSel * a_this) +{ + g_return_if_fail (a_this); + + if (a_this->name) { + cr_string_destroy (a_this->name); + a_this->name = NULL; + } + + if (a_this->value) { + cr_string_destroy (a_this->value); + a_this->value = NULL; + } + + if (a_this->next) { + cr_attr_sel_destroy (a_this->next); + a_this->next = NULL; + } + + if (a_this) { + g_free (a_this); + a_this = NULL; + } +} + diff --git a/src/st/croco/cr-attr-sel.h b/src/st/croco/cr-attr-sel.h new file mode 100644 index 0000000..82d5a87 --- /dev/null +++ b/src/st/croco/cr-attr-sel.h @@ -0,0 +1,74 @@ +/* -*- Mode: C; indent-tabs-mode:nil; c-basic-offset: 8-*- */ + +/* + * This file is part of The Croco Library + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of version 2.1 of the GNU Lesser General Public + * License as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 + * USA + * + * Author: Dodji Seketeli + * See COPYRIGHTS file for copyright information. + */ + +#ifndef __CR_ATTR_SEL_H__ +#define __CR_ATTR_SEL_H__ + +#include <stdio.h> +#include <glib.h> +#include "cr-utils.h" +#include "cr-parsing-location.h" +#include "cr-string.h" + +G_BEGIN_DECLS + + +struct _CRAttrSel ; +typedef struct _CRAttrSel CRAttrSel ; + +enum AttrMatchWay +{ + NO_MATCH = 0, + SET, + EQUALS, + INCLUDES, + DASHMATCH +} ; + +struct _CRAttrSel +{ + CRString *name ; + CRString *value ; + enum AttrMatchWay match_way ; + CRAttrSel *next ; + CRAttrSel *prev ; + CRParsingLocation location ; +} ; + +CRAttrSel * cr_attr_sel_new (void) ; + +enum CRStatus cr_attr_sel_append_attr_sel (CRAttrSel * a_this, + CRAttrSel *a_attr_sel) ; + +enum CRStatus cr_attr_sel_prepend_attr_sel (CRAttrSel *a_this, + CRAttrSel *a_attr_sel) ; + +guchar * cr_attr_sel_to_string (CRAttrSel const *a_this) ; + +void cr_attr_sel_dump (CRAttrSel const *a_this, FILE *a_fp) ; + +void cr_attr_sel_destroy (CRAttrSel *a_this) ; + +G_END_DECLS + +#endif /*__CR_ATTR_SEL_H__*/ diff --git a/src/st/croco/cr-cascade.c b/src/st/croco/cr-cascade.c new file mode 100644 index 0000000..68f59bb --- /dev/null +++ b/src/st/croco/cr-cascade.c @@ -0,0 +1,215 @@ +/* -*- Mode: C; indent-tabs-mode:nil; c-basic-offset: 8-*- */ + +/* + * This file is part of The Croco Library + * + * Copyright (C) 2002-2003 Dodji Seketeli <dodji@seketeli.org> + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of version 2.1 of the + * GNU Lesser General Public + * License as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the + * GNU Lesser General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 + * USA + */ + +/* + *$Id$ + */ + +#include <string.h> +#include "cr-cascade.h" + +#define PRIVATE(a_this) ((a_this)->priv) + +struct _CRCascadePriv { + /** + *the 3 style sheets of the cascade: + *author, user, and useragent sheet. + *Intended to be addressed by + *sheets[ORIGIN_AUTHOR] or sheets[ORIGIN_USER] + *of sheets[ORIGIN_UA] ; + */ + CRStyleSheet *sheets[3]; + guint ref_count; +}; + +/** + * cr_cascade_new: + *@a_author_sheet: the author origin style sheet. May be NULL. + *@a_user_sheet: the user origin style sheet. May be NULL. + *@a_ua_sheet: the user agent origin style sheet. May be NULL. + * + *Constructor of the #CRCascade class. + *Note that all three parameters of this + *method are ref counted and their refcount is increased. + *Their refcount will be decreased at the destruction of + *the instance of #CRCascade. + *So the caller should not call their destructor. The caller + *should call their ref/unref method instead if it wants + * + *Returns the newly built instance of CRCascade or NULL if + *an error arose during construction. + */ +CRCascade * +cr_cascade_new (CRStyleSheet * a_author_sheet, + CRStyleSheet * a_user_sheet, CRStyleSheet * a_ua_sheet) +{ + CRCascade *result = NULL; + + result = g_try_malloc (sizeof (CRCascade)); + if (!result) { + cr_utils_trace_info ("Out of memory"); + return NULL; + } + memset (result, 0, sizeof (CRCascade)); + + PRIVATE (result) = g_try_malloc (sizeof (CRCascadePriv)); + if (!PRIVATE (result)) { + cr_utils_trace_info ("Out of memory"); + g_free (result); + return NULL; + } + memset (PRIVATE (result), 0, sizeof (CRCascadePriv)); + + if (a_author_sheet) { + cr_cascade_set_sheet (result, a_author_sheet, ORIGIN_AUTHOR); + } + if (a_user_sheet) { + cr_cascade_set_sheet (result, a_user_sheet, ORIGIN_USER); + } + if (a_ua_sheet) { + cr_cascade_set_sheet (result, a_ua_sheet, ORIGIN_UA); + } + + return result; +} + +/** + * cr_cascade_get_sheet: + *@a_this: the current instance of #CRCascade. + *@a_origin: the origin of the style sheet as + *defined in the css2 spec in chapter 6.4. + *Gets a given origin sheet. + * + *Gets a sheet, part of the cascade. + *Note that the returned stylesheet + *is refcounted so if the caller wants + *to manage it's lifecycle, it must use + *cr_stylesheet_ref()/cr_stylesheet_unref() instead + *of the cr_stylesheet_destroy() method. + *Returns the style sheet, or NULL if it does not + *exist. + */ +CRStyleSheet * +cr_cascade_get_sheet (CRCascade * a_this, enum CRStyleOrigin a_origin) +{ + g_return_val_if_fail (a_this + && a_origin >= ORIGIN_UA + && a_origin < NB_ORIGINS, NULL); + + return PRIVATE (a_this)->sheets[a_origin]; +} + +/** + * cr_cascade_set_sheet: + *@a_this: the current instance of #CRCascade. + *@a_sheet: the stylesheet to set. + *@a_origin: the origin of the stylesheet. + * + *Sets a stylesheet in the cascade + * + *Returns CR_OK upon successful completion, an error + *code otherwise. + */ +enum CRStatus +cr_cascade_set_sheet (CRCascade * a_this, + CRStyleSheet * a_sheet, enum CRStyleOrigin a_origin) +{ + g_return_val_if_fail (a_this + && a_sheet + && a_origin >= ORIGIN_UA + && a_origin < NB_ORIGINS, CR_BAD_PARAM_ERROR); + + if (PRIVATE (a_this)->sheets[a_origin]) + cr_stylesheet_unref (PRIVATE (a_this)->sheets[a_origin]); + PRIVATE (a_this)->sheets[a_origin] = a_sheet; + cr_stylesheet_ref (a_sheet); + a_sheet->origin = a_origin; + return CR_OK; +} + +/** + *cr_cascade_ref: + *@a_this: the current instance of #CRCascade + * + *Increases the reference counter of the current instance + *of #CRCascade. + */ +void +cr_cascade_ref (CRCascade * a_this) +{ + g_return_if_fail (a_this && PRIVATE (a_this)); + + PRIVATE (a_this)->ref_count++; +} + +/** + * cr_cascade_unref: + *@a_this: the current instance of + *#CRCascade. + * + *Decrements the reference counter associated + *to this instance of #CRCascade. If the reference + *counter reaches zero, the instance is destroyed + *using cr_cascade_destroy() + */ +void +cr_cascade_unref (CRCascade * a_this) +{ + g_return_if_fail (a_this && PRIVATE (a_this)); + + if (PRIVATE (a_this)->ref_count) + PRIVATE (a_this)->ref_count--; + if (!PRIVATE (a_this)->ref_count) { + cr_cascade_destroy (a_this); + } +} + +/** + * cr_cascade_destroy: + * @a_this: the current instance of #CRCascade + * + * Destructor of #CRCascade. + */ +void +cr_cascade_destroy (CRCascade * a_this) +{ + g_return_if_fail (a_this); + + if (PRIVATE (a_this)) { + gulong i = 0; + + for (i = 0; i < NB_ORIGINS; i++) { + if (PRIVATE (a_this)->sheets[i]) { + if (cr_stylesheet_unref + (PRIVATE (a_this)->sheets[i]) + == TRUE) { + PRIVATE (a_this)->sheets[i] = NULL; + } + } + } + g_free (PRIVATE (a_this)); + PRIVATE (a_this) = NULL; + } + g_free (a_this); +} diff --git a/src/st/croco/cr-cascade.h b/src/st/croco/cr-cascade.h new file mode 100644 index 0000000..3119ae8 --- /dev/null +++ b/src/st/croco/cr-cascade.h @@ -0,0 +1,74 @@ +/* -*- Mode: C; indent-tabs-mode:nil; c-basic-offset: 8-*- */ + +/* + * This file is part of The Croco Library + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of version 2.1 of the + * GNU Lesser General Public + * License as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the + * GNU Lesser General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 + * USA + * + */ + +/* + *$Id$ + */ + +#ifndef __CR_CASCADE_H__ +#define __CR_CASCADE_H__ + +#include "cr-stylesheet.h" + +/** + *@file + *the declaration of the #CRCascade class. + */ + +G_BEGIN_DECLS + + +typedef struct _CRCascadePriv CRCascadePriv ; + +/** + *An abstraction of the "Cascade" defined + *in the css2 spec, chapter 6.4. + */ +typedef struct _CRCascade CRCascade ; + +struct _CRCascade +{ + CRCascadePriv *priv ; +}; + + +CRCascade * cr_cascade_new (CRStyleSheet *a_author_sheet, + CRStyleSheet *a_user_sheet, + CRStyleSheet *a_ua_sheet) ; + +CRStyleSheet * cr_cascade_get_sheet (CRCascade *a_this, + enum CRStyleOrigin a_origin) ; + +enum CRStatus cr_cascade_set_sheet (CRCascade *a_this, + CRStyleSheet *a_sheet, + enum CRStyleOrigin a_origin) ; + +void cr_cascade_ref (CRCascade *a_this) ; + +void cr_cascade_unref (CRCascade *a_this) ; + +void cr_cascade_destroy (CRCascade *a_this) ; + +G_END_DECLS + +#endif /*__CR_CASCADE_H__*/ diff --git a/src/st/croco/cr-declaration.c b/src/st/croco/cr-declaration.c new file mode 100644 index 0000000..6c70128 --- /dev/null +++ b/src/st/croco/cr-declaration.c @@ -0,0 +1,798 @@ +/* -*- Mode: C; indent-tabs-mode: nil; c-basic-offset: 8 -*- */ + +/* + * This file is part of The Croco Library + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of version 2.1 of the GNU Lesser General Public + * License as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 + * USA + * + * Author: Dodji Seketeli. + * See COPYRIGHTS file for copyright information. + */ + + +#include <string.h> +#include "cr-declaration.h" +#include "cr-statement.h" +#include "cr-parser.h" + +/** + *@CRDeclaration: + * + *The definition of the #CRDeclaration class. + */ + +/** + * dump: + *@a_this: the current instance of #CRDeclaration. + *@a_fp: the destination file pointer. + *@a_indent: the number of indentation white char. + * + *Dumps (serializes) one css declaration to a file. + */ +static void +dump (CRDeclaration const * a_this, FILE * a_fp, glong a_indent) +{ + guchar *str = NULL; + + g_return_if_fail (a_this); + + str = (guchar *) cr_declaration_to_string (a_this, a_indent); + if (str) { + fprintf (a_fp, "%s", str); + g_free (str); + str = NULL; + } +} + +/** + * cr_declaration_new: + * @a_statement: the statement this declaration belongs to. can be NULL. + *@a_property: the property string of the declaration + *@a_value: the value expression of the declaration. + *Constructor of #CRDeclaration. + * + *Returns the newly built instance of #CRDeclaration, or NULL in + *case of error. + * + *The returned CRDeclaration takes ownership of @a_property and @a_value. + *(E.g. cr_declaration_destroy on this CRDeclaration will also free + *@a_property and @a_value.) + */ +CRDeclaration * +cr_declaration_new (CRStatement * a_statement, + CRString * a_property, CRTerm * a_value) +{ + CRDeclaration *result = NULL; + + g_return_val_if_fail (a_property, NULL); + + if (a_statement) + g_return_val_if_fail (a_statement + && ((a_statement->type == RULESET_STMT) + || (a_statement->type + == AT_FONT_FACE_RULE_STMT) + || (a_statement->type + == AT_PAGE_RULE_STMT)), NULL); + + result = g_try_malloc (sizeof (CRDeclaration)); + if (!result) { + cr_utils_trace_info ("Out of memory"); + return NULL; + } + memset (result, 0, sizeof (CRDeclaration)); + result->property = a_property; + result->value = a_value; + + if (a_value) { + cr_term_ref (a_value); + } + result->parent_statement = a_statement; + return result; +} + +/** + * cr_declaration_parse_from_buf: + *@a_statement: the parent css2 statement of this + *this declaration. Must be non NULL and of type + *RULESET_STMT (must be a ruleset). + *@a_str: the string that contains the statement. + *@a_enc: the encoding of a_str. + * + *Parses a text buffer that contains + *a css declaration. + *Returns the parsed declaration, or NULL in case of error. + */ +CRDeclaration * +cr_declaration_parse_from_buf (CRStatement * a_statement, + const guchar * a_str, enum CREncoding a_enc) +{ + enum CRStatus status = CR_OK; + CRTerm *value = NULL; + CRString *property = NULL; + CRDeclaration *result = NULL; + CRParser *parser = NULL; + gboolean important = FALSE; + + g_return_val_if_fail (a_str, NULL); + if (a_statement) + g_return_val_if_fail (a_statement->type == RULESET_STMT, + NULL); + + parser = cr_parser_new_from_buf ((guchar*)a_str, strlen ((const char *) a_str), a_enc, FALSE); + g_return_val_if_fail (parser, NULL); + + status = cr_parser_try_to_skip_spaces_and_comments (parser); + if (status != CR_OK) + goto cleanup; + + status = cr_parser_parse_declaration (parser, &property, + &value, &important); + if (status != CR_OK || !property) + goto cleanup; + + result = cr_declaration_new (a_statement, property, value); + if (result) { + property = NULL; + value = NULL; + result->important = important; + } + + cleanup: + + if (parser) { + cr_parser_destroy (parser); + parser = NULL; + } + + if (property) { + cr_string_destroy (property); + property = NULL; + } + + if (value) { + cr_term_destroy (value); + value = NULL; + } + + return result; +} + +/** + * cr_declaration_parse_list_from_buf: + *@a_str: the input buffer that contains the list of declaration to + *parse. + *@a_enc: the encoding of a_str + * + *Parses a ';' separated list of properties declaration. + *Returns the parsed list of declaration, NULL if parsing failed. + */ +CRDeclaration * +cr_declaration_parse_list_from_buf (const guchar * a_str, + enum CREncoding a_enc) +{ + + enum CRStatus status = CR_OK; + CRTerm *value = NULL; + CRString *property = NULL; + CRDeclaration *result = NULL, + *cur_decl = NULL; + CRParser *parser = NULL; + CRTknzr *tokenizer = NULL; + gboolean important = FALSE; + + g_return_val_if_fail (a_str, NULL); + + parser = cr_parser_new_from_buf ((guchar*)a_str, strlen ((const char *) a_str), a_enc, FALSE); + g_return_val_if_fail (parser, NULL); + status = cr_parser_get_tknzr (parser, &tokenizer); + if (status != CR_OK || !tokenizer) { + if (status == CR_OK) + status = CR_ERROR; + goto cleanup; + } + status = cr_parser_try_to_skip_spaces_and_comments (parser); + if (status != CR_OK) + goto cleanup; + + status = cr_parser_parse_declaration (parser, &property, + &value, &important); + if (status != CR_OK || !property) { + if (status != CR_OK) + status = CR_ERROR; + goto cleanup; + } + result = cr_declaration_new (NULL, property, value); + if (result) { + property = NULL; + value = NULL; + result->important = important; + } + /*now, go parse the other declarations */ + for (;;) { + guint32 c = 0; + + cr_parser_try_to_skip_spaces_and_comments (parser); + status = cr_tknzr_peek_char (tokenizer, &c); + if (status != CR_OK) { + if (status == CR_END_OF_INPUT_ERROR) + status = CR_OK; + goto cleanup; + } + if (c == ';') { + status = cr_tknzr_read_char (tokenizer, &c); + } else { + break; + } + important = FALSE; + cr_parser_try_to_skip_spaces_and_comments (parser); + status = cr_parser_parse_declaration (parser, &property, + &value, &important); + if (status != CR_OK || !property) { + if (status == CR_END_OF_INPUT_ERROR) { + status = CR_OK; + } + break; + } + cur_decl = cr_declaration_new (NULL, property, value); + if (cur_decl) { + cur_decl->important = important; + result = cr_declaration_append (result, cur_decl); + property = NULL; + value = NULL; + cur_decl = NULL; + } else { + break; + } + } + + cleanup: + + if (parser) { + cr_parser_destroy (parser); + parser = NULL; + } + + if (property) { + cr_string_destroy (property); + property = NULL; + } + + if (value) { + cr_term_destroy (value); + value = NULL; + } + + if (status != CR_OK && result) { + cr_declaration_destroy (result); + result = NULL; + } + return result; +} + +/** + * cr_declaration_append: + *@a_this: the current declaration list. + *@a_new: the declaration to append. + * + *Appends a new declaration to the current declarations list. + *Returns the declaration list with a_new appended to it, or NULL + *in case of error. + */ +CRDeclaration * +cr_declaration_append (CRDeclaration * a_this, CRDeclaration * a_new) +{ + CRDeclaration *cur = NULL; + + g_return_val_if_fail (a_new, NULL); + + if (!a_this) + return a_new; + + for (cur = a_this; cur && cur->next; cur = cur->next) ; + + cur->next = a_new; + a_new->prev = cur; + + return a_this; +} + +/** + * cr_declaration_unlink: + *@a_decls: the declaration to unlink. + * + *Unlinks the declaration from the declaration list. + *case of a successful completion, NULL otherwise. + * + *Returns a pointer to the unlinked declaration in + */ +CRDeclaration * +cr_declaration_unlink (CRDeclaration * a_decl) +{ + CRDeclaration *result = a_decl; + + g_return_val_if_fail (result, NULL); + + /* + *some sanity checks first + */ + if (a_decl->prev) { + g_return_val_if_fail (a_decl->prev->next == a_decl, NULL); + + } + if (a_decl->next) { + g_return_val_if_fail (a_decl->next->prev == a_decl, NULL); + } + + /* + *now, the real unlinking job. + */ + if (a_decl->prev) { + a_decl->prev->next = a_decl->next; + } + if (a_decl->next) { + a_decl->next->prev = a_decl->prev; + } + if (a_decl->parent_statement) { + CRDeclaration **children_decl_ptr = NULL; + + switch (a_decl->parent_statement->type) { + case RULESET_STMT: + if (a_decl->parent_statement->kind.ruleset) { + children_decl_ptr = + &a_decl->parent_statement-> + kind.ruleset->decl_list; + } + + break; + + case AT_FONT_FACE_RULE_STMT: + if (a_decl->parent_statement->kind.font_face_rule) { + children_decl_ptr = + &a_decl->parent_statement-> + kind.font_face_rule->decl_list; + } + break; + case AT_PAGE_RULE_STMT: + if (a_decl->parent_statement->kind.page_rule) { + children_decl_ptr = + &a_decl->parent_statement-> + kind.page_rule->decl_list; + } + + default: + break; + } + if (children_decl_ptr + && *children_decl_ptr && *children_decl_ptr == a_decl) + *children_decl_ptr = (*children_decl_ptr)->next; + } + + a_decl->next = NULL; + a_decl->prev = NULL; + a_decl->parent_statement = NULL; + + return result; +} + +/** + * cr_declaration_prepend: + * @a_this: the current declaration list. + * @a_new: the declaration to prepend. + * + * prepends a declaration to the current declaration list. + * + * Returns the list with a_new prepended or NULL in case of error. + */ +CRDeclaration * +cr_declaration_prepend (CRDeclaration * a_this, CRDeclaration * a_new) +{ + CRDeclaration *cur = NULL; + + g_return_val_if_fail (a_new, NULL); + + if (!a_this) + return a_new; + + a_this->prev = a_new; + a_new->next = a_this; + + for (cur = a_new; cur && cur->prev; cur = cur->prev) ; + + return cur; +} + +/** + * cr_declaration_append2: + *@a_this: the current declaration list. + *@a_prop: the property string of the declaration to append. + *@a_value: the value of the declaration to append. + * + *Appends a declaration to the current declaration list. + *Returns the list with the new property appended to it, or NULL in + *case of an error. + */ +CRDeclaration * +cr_declaration_append2 (CRDeclaration * a_this, + CRString * a_prop, CRTerm * a_value) +{ + CRDeclaration *new_elem = NULL; + + if (a_this) { + new_elem = cr_declaration_new (a_this->parent_statement, + a_prop, a_value); + } else { + new_elem = cr_declaration_new (NULL, a_prop, a_value); + } + + g_return_val_if_fail (new_elem, NULL); + + return cr_declaration_append (a_this, new_elem); +} + +/** + * cr_declaration_dump: + *@a_this: the current instance of #CRDeclaration. + *@a_fp: the destination file. + *@a_indent: the number of indentation white char. + *@a_one_per_line: whether to put one declaration per line of not . + * + * + *Dumps a declaration list to a file. + */ +void +cr_declaration_dump (CRDeclaration const * a_this, FILE * a_fp, glong a_indent, + gboolean a_one_per_line) +{ + CRDeclaration const *cur = NULL; + + g_return_if_fail (a_this); + + for (cur = a_this; cur; cur = cur->next) { + if (cur->prev) { + if (a_one_per_line == TRUE) + fprintf (a_fp, ";\n"); + else + fprintf (a_fp, "; "); + } + dump (cur, a_fp, a_indent); + } +} + +/** + * cr_declaration_dump_one: + *@a_this: the current instance of #CRDeclaration. + *@a_fp: the destination file. + *@a_indent: the number of indentation white char. + * + *Dumps the first declaration of the declaration list to a file. + */ +void +cr_declaration_dump_one (CRDeclaration const * a_this, FILE * a_fp, glong a_indent) +{ + g_return_if_fail (a_this); + + dump (a_this, a_fp, a_indent); +} + +/** + * cr_declaration_to_string: + *@a_this: the current instance of #CRDeclaration. + *@a_indent: the number of indentation white char + *to put before the actual serialisation. + * + *Serializes the declaration into a string + *Returns the serialized form the declaration. The caller must + *free the string using g_free(). + */ +gchar * +cr_declaration_to_string (CRDeclaration const * a_this, gulong a_indent) +{ + GString *stringue = NULL; + + gchar *str = NULL, + *result = NULL; + + g_return_val_if_fail (a_this, NULL); + + stringue = g_string_new (NULL); + + if (a_this->property + && a_this->property->stryng + && a_this->property->stryng->str) { + str = g_strndup (a_this->property->stryng->str, + a_this->property->stryng->len); + if (str) { + cr_utils_dump_n_chars2 (' ', stringue, + a_indent); + g_string_append (stringue, str); + g_free (str); + str = NULL; + } else + goto error; + + if (a_this->value) { + guchar *value_str = NULL; + + value_str = cr_term_to_string (a_this->value); + if (value_str) { + g_string_append_printf (stringue, " : %s", + value_str); + g_free (value_str); + } else + goto error; + } + if (a_this->important == TRUE) { + g_string_append_printf (stringue, " %s", + "!important"); + } + } + if (stringue && stringue->str) { + result = g_string_free (stringue, FALSE); + } + return result; + + error: + if (stringue) { + g_string_free (stringue, TRUE); + stringue = NULL; + } + if (str) { + g_free (str); + str = NULL; + } + + return result; +} + +/** + * cr_declaration_list_to_string: + *@a_this: the current instance of #CRDeclaration. + *@a_indent: the number of indentation white char + *to put before the actual serialisation. + * + *Serializes the declaration list into a string + */ +guchar * +cr_declaration_list_to_string (CRDeclaration const * a_this, gulong a_indent) +{ + CRDeclaration const *cur = NULL; + GString *stringue = NULL; + guchar *str = NULL, + *result = NULL; + + g_return_val_if_fail (a_this, NULL); + + stringue = g_string_new (NULL); + + for (cur = a_this; cur; cur = cur->next) { + str = (guchar *) cr_declaration_to_string (cur, a_indent); + if (str) { + g_string_append_printf (stringue, "%s;", str); + g_free (str); + } else + break; + } + if (stringue && stringue->str) { + result = (guchar *) g_string_free (stringue, FALSE); + } + + return result; +} + +/** + * cr_declaration_list_to_string2: + *@a_this: the current instance of #CRDeclaration. + *@a_indent: the number of indentation white char + *@a_one_decl_per_line: whether to output one doc per line or not. + *to put before the actual serialisation. + * + *Serializes the declaration list into a string + *Returns the serialized form the declararation. + */ +guchar * +cr_declaration_list_to_string2 (CRDeclaration const * a_this, + gulong a_indent, gboolean a_one_decl_per_line) +{ + CRDeclaration const *cur = NULL; + GString *stringue = NULL; + guchar *str = NULL, + *result = NULL; + + g_return_val_if_fail (a_this, NULL); + + stringue = g_string_new (NULL); + + for (cur = a_this; cur; cur = cur->next) { + str = (guchar *) cr_declaration_to_string (cur, a_indent); + if (str) { + if (a_one_decl_per_line == TRUE) { + if (cur->next) + g_string_append_printf (stringue, + "%s;\n", str); + else + g_string_append (stringue, + (const gchar *) str); + } else { + if (cur->next) + g_string_append_printf (stringue, + "%s;", str); + else + g_string_append (stringue, + (const gchar *) str); + } + g_free (str); + } else + break; + } + if (stringue && stringue->str) { + result = (guchar *) g_string_free (stringue, FALSE); + } + + return result; +} + +/** + * cr_declaration_nr_props: + *@a_this: the current instance of #CRDeclaration. + *Return the number of properties in the declaration + */ +gint +cr_declaration_nr_props (CRDeclaration const * a_this) +{ + CRDeclaration const *cur = NULL; + int nr = 0; + + g_return_val_if_fail (a_this, -1); + + for (cur = a_this; cur; cur = cur->next) + nr++; + return nr; +} + +/** + * cr_declaration_get_from_list: + *@a_this: the current instance of #CRDeclaration. + *@itemnr: the index into the declaration list. + * + *Use an index to get a CRDeclaration from the declaration list. + * + *Returns #CRDeclaration at position itemnr, + *if itemnr > number of declarations - 1, + *it will return NULL. + */ +CRDeclaration * +cr_declaration_get_from_list (CRDeclaration * a_this, int itemnr) +{ + CRDeclaration *cur = NULL; + int nr = 0; + + g_return_val_if_fail (a_this, NULL); + + for (cur = a_this; cur; cur = cur->next) + if (nr++ == itemnr) + return cur; + return NULL; +} + +/** + * cr_declaration_get_by_prop_name: + *@a_this: the current instance of #CRDeclaration. + *@a_prop: the property name to search for. + * + *Use property name to get a CRDeclaration from the declaration list. + *Returns #CRDeclaration with property name a_prop, or NULL if not found. + */ +CRDeclaration * +cr_declaration_get_by_prop_name (CRDeclaration * a_this, + const guchar * a_prop) +{ + CRDeclaration *cur = NULL; + + g_return_val_if_fail (a_this, NULL); + g_return_val_if_fail (a_prop, NULL); + + for (cur = a_this; cur; cur = cur->next) { + if (cur->property + && cur->property->stryng + && cur->property->stryng->str) { + if (!strcmp (cur->property->stryng->str, + (const char *) a_prop)) { + return cur; + } + } + } + return NULL; +} + +/** + * cr_declaration_ref: + *@a_this: the current instance of #CRDeclaration. + * + *Increases the ref count of the current instance of #CRDeclaration. + */ +void +cr_declaration_ref (CRDeclaration * a_this) +{ + g_return_if_fail (a_this); + + a_this->ref_count++; +} + +/** + * cr_declaration_unref: + *@a_this: the current instance of #CRDeclaration. + * + *Decrements the ref count of the current instance of #CRDeclaration. + *If the ref count reaches zero, the current instance of #CRDeclaration + *if destroyed. + *Returns TRUE if @a_this was destroyed (ref count reached zero), + *FALSE otherwise. + */ +gboolean +cr_declaration_unref (CRDeclaration * a_this) +{ + g_return_val_if_fail (a_this, FALSE); + + if (a_this->ref_count) { + a_this->ref_count--; + } + + if (a_this->ref_count == 0) { + cr_declaration_destroy (a_this); + return TRUE; + } + return FALSE; +} + +/** + * cr_declaration_destroy: + *@a_this: the current instance of #CRDeclaration. + * + *Destructor of the declaration list. + */ +void +cr_declaration_destroy (CRDeclaration * a_this) +{ + CRDeclaration *cur = NULL; + + g_return_if_fail (a_this); + + /* + * Go to the last element of the list. + */ + for (cur = a_this; cur->next; cur = cur->next) + g_assert (cur->next->prev == cur); + + /* + * Walk backward the list and free each "next" element. + * Meanwhile, free each property/value pair contained in the list. + */ + for (; cur; cur = cur->prev) { + g_free (cur->next); + cur->next = NULL; + + if (cur->property) { + cr_string_destroy (cur->property); + cur->property = NULL; + } + + if (cur->value) { + cr_term_destroy (cur->value); + cur->value = NULL; + } + } + + g_free (a_this); +} diff --git a/src/st/croco/cr-declaration.h b/src/st/croco/cr-declaration.h new file mode 100644 index 0000000..eee8be3 --- /dev/null +++ b/src/st/croco/cr-declaration.h @@ -0,0 +1,136 @@ +/* -*- Mode: C; indent-tabs-mode: nil; c-basic-offset: 8 -*- */ + +/* + * This file is part of The Croco Library + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of version 2.1 of the GNU Lesser General Public + * License as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 + * USA + * + * See the COPYRIGHTS file for copyright information. + */ + +#ifndef __CR_DECLARATION_H__ +#define __CR_DECLARATION_H__ + +#include <stdio.h> +#include "cr-utils.h" +#include "cr-term.h" +#include "cr-parsing-location.h" + +G_BEGIN_DECLS + +/** + *@file + *The declaration of the #CRDeclaration class. + */ + +/*forward declaration of what is defined in cr-statement.h*/ +typedef struct _CRStatement CRStatement ; + +/** + *The abstraction of a css declaration defined by the + *css2 spec in chapter 4. + *It is actually a chained list of property/value pairs. + */ +typedef struct _CRDeclaration CRDeclaration ; +struct _CRDeclaration +{ + /**The property.*/ + CRString *property ; + + /**The value of the property.*/ + CRTerm *value ; + + /*the ruleset that contains this declaration*/ + CRStatement *parent_statement ; + + /*the next declaration*/ + CRDeclaration *next ; + + /*the previous one declaration*/ + CRDeclaration *prev ; + + /*does the declaration have the important keyword ?*/ + gboolean important ; + + glong ref_count ; + + CRParsingLocation location ; + /*reserved for future usage*/ + gpointer rfu0 ; + gpointer rfu1 ; + gpointer rfu2 ; + gpointer rfu3 ; +} ; + + +CRDeclaration * cr_declaration_new (CRStatement *a_statement, + CRString *a_property, + CRTerm *a_value) ; + + +CRDeclaration * cr_declaration_parse_from_buf (CRStatement *a_statement, + const guchar *a_str, + enum CREncoding a_enc) ; + +CRDeclaration * cr_declaration_parse_list_from_buf (const guchar *a_str, + enum CREncoding a_enc) ; + +CRDeclaration * cr_declaration_append (CRDeclaration *a_this, + CRDeclaration *a_new) ; + +CRDeclaration * cr_declaration_append2 (CRDeclaration *a_this, + CRString *a_prop, + CRTerm *a_value) ; + +CRDeclaration * cr_declaration_prepend (CRDeclaration *a_this, + CRDeclaration *a_new) ; + +CRDeclaration * cr_declaration_unlink (CRDeclaration * a_decl) ; + +void +cr_declaration_dump (CRDeclaration const *a_this, + FILE *a_fp, glong a_indent, + gboolean a_one_per_line) ; + +void cr_declaration_dump_one (CRDeclaration const *a_this, + FILE *a_fp, glong a_indent) ; + +gint cr_declaration_nr_props (CRDeclaration const *a_this) ; + +CRDeclaration * cr_declaration_get_from_list (CRDeclaration *a_this, + int itemnr) ; + +CRDeclaration * cr_declaration_get_by_prop_name (CRDeclaration *a_this, + const guchar *a_str) ; + +gchar * cr_declaration_to_string (CRDeclaration const *a_this, + gulong a_indent) ; + +guchar * cr_declaration_list_to_string (CRDeclaration const *a_this, + gulong a_indent) ; + +guchar * cr_declaration_list_to_string2 (CRDeclaration const *a_this, + gulong a_indent, + gboolean a_one_decl_per_line) ; + +void cr_declaration_ref (CRDeclaration *a_this) ; + +gboolean cr_declaration_unref (CRDeclaration *a_this) ; + +void cr_declaration_destroy (CRDeclaration *a_this) ; + +G_END_DECLS + +#endif /*__CR_DECLARATION_H__*/ diff --git a/src/st/croco/cr-doc-handler.c b/src/st/croco/cr-doc-handler.c new file mode 100644 index 0000000..b0ef13c --- /dev/null +++ b/src/st/croco/cr-doc-handler.c @@ -0,0 +1,276 @@ +/* -*- Mode: C; indent-tabs-mode: nil; c-basic-offset: 8 -*- */ + +/* + * This file is part of The Croco Library + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of version 2.1 of the GNU Lesser General Public + * License as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 + * USA + * + * See COPRYRIGHTS file for copyright information. + */ + +#include <string.h> +#include "cr-doc-handler.h" +#include "cr-parser.h" + +/** + *@CRDocHandler: + * + *The definition of the CRDocHandler class. + *Contains methods to instantiate, destroy, + *and initialize instances of #CRDocHandler + *to custom values. + */ + +#define PRIVATE(obj) (obj)->priv + +struct _CRDocHandlerPriv { + /** + *This pointer is to hold an application parsing context. + *For example, it used by the Object Model parser to + *store it parsing context. #CRParser does not touch it, but + *#CROMParser does. #CROMParser allocates this pointer at + *the beginning of the css document, and frees it at the end + *of the document. + */ + gpointer context; + + /** + *The place where #CROMParser puts the result of its parsing, if + *any. + */ + gpointer result; + /** + *a pointer to the parser used to parse + *the current document. + */ + CRParser *parser ; +}; + +/** + * cr_doc_handler_new: + *Constructor of #CRDocHandler. + * + *Returns the newly built instance of + *#CRDocHandler + * + */ +CRDocHandler * +cr_doc_handler_new (void) +{ + CRDocHandler *result = NULL; + + result = g_try_malloc (sizeof (CRDocHandler)); + + g_return_val_if_fail (result, NULL); + + memset (result, 0, sizeof (CRDocHandler)); + result->ref_count++; + + result->priv = g_try_malloc (sizeof (CRDocHandlerPriv)); + if (!result->priv) { + cr_utils_trace_info ("Out of memory exception"); + g_free (result); + return NULL; + } + + cr_doc_handler_set_default_sac_handler (result); + + return result; +} + +/** + * cr_doc_handler_get_ctxt: + *@a_this: the current instance of #CRDocHandler. + *@a_ctxt: out parameter. The new parsing context. + * + *Gets the private parsing context associated to the document handler + *The private parsing context is used by libcroco only. + * + *Returns CR_OK upon successful completion, an error code otherwise. + */ +enum CRStatus +cr_doc_handler_get_ctxt (CRDocHandler const * a_this, gpointer * a_ctxt) +{ + g_return_val_if_fail (a_this && a_this->priv, CR_BAD_PARAM_ERROR); + + *a_ctxt = a_this->priv->context; + + return CR_OK; +} + +/** + * cr_doc_handler_set_ctxt: + *@a_this: the current instance of #CRDocHandler + *@a_ctxt: a pointer to the parsing context. + * + *Sets the private parsing context. + *This is used by libcroco only. + *Returns CR_OK upon successful completion, an error code otherwise. + */ +enum CRStatus +cr_doc_handler_set_ctxt (CRDocHandler * a_this, gpointer a_ctxt) +{ + g_return_val_if_fail (a_this && a_this->priv, CR_BAD_PARAM_ERROR); + a_this->priv->context = a_ctxt; + return CR_OK; +} + +/** + * cr_doc_handler_get_result: + *@a_this: the current instance of #CRDocHandler + *@a_result: out parameter. The returned result. + * + *Gets the private parsing result. + *The private parsing result is used by libcroco only. + * + *Returns CR_OK upon successful completion, an error code otherwise. + */ +enum CRStatus +cr_doc_handler_get_result (CRDocHandler const * a_this, gpointer * a_result) +{ + g_return_val_if_fail (a_this && a_this->priv, CR_BAD_PARAM_ERROR); + + *a_result = a_this->priv->result; + + return CR_OK; +} + +/** + * cr_doc_handler_set_result: + *@a_this: the current instance of #CRDocHandler + *@a_result: the new result. + * + *Sets the private parsing context. + *This is used by libcroco only. + * + *Returns CR_OK upon successful completion, an error code otherwise. + */ +enum CRStatus +cr_doc_handler_set_result (CRDocHandler * a_this, gpointer a_result) +{ + g_return_val_if_fail (a_this && a_this->priv, CR_BAD_PARAM_ERROR); + a_this->priv->result = a_result; + return CR_OK; +} + +/** + *cr_doc_handler_set_default_sac_handler: + *@a_this: a pointer to the current instance of #CRDocHandler. + * + *Sets the sac handlers contained in the current + *instance of DocHandler to the default handlers. + *For the time being the default handlers are + *test handlers. This is expected to change in a + *near future, when the libcroco gets a bit debugged. + * + *Returns CR_OK upon successful completion, an error code otherwise. + */ +enum CRStatus +cr_doc_handler_set_default_sac_handler (CRDocHandler * a_this) +{ + g_return_val_if_fail (a_this, CR_BAD_PARAM_ERROR); + + a_this->start_document = NULL; + a_this->end_document = NULL; + a_this->import_style = NULL; + a_this->namespace_declaration = NULL; + a_this->comment = NULL; + a_this->start_selector = NULL; + a_this->end_selector = NULL; + a_this->property = NULL; + a_this->start_font_face = NULL; + a_this->end_font_face = NULL; + a_this->start_media = NULL; + a_this->end_media = NULL; + a_this->start_page = NULL; + a_this->end_page = NULL; + a_this->ignorable_at_rule = NULL; + a_this->error = NULL; + a_this->unrecoverable_error = NULL; + return CR_OK; +} + +/** + * cr_doc_handler_ref: + *@a_this: the current instance of #CRDocHandler. + */ +void +cr_doc_handler_ref (CRDocHandler * a_this) +{ + g_return_if_fail (a_this); + + a_this->ref_count++; +} + +/** + * cr_doc_handler_unref: + *@a_this: the current instance of #CRDocHandler. + * + *Decreases the ref count of the current instance of #CRDocHandler. + *If the ref count reaches '0' then, destroys the instance. + * + *Returns TRUE if the instance as been destroyed, FALSE otherwise. + */ +gboolean +cr_doc_handler_unref (CRDocHandler * a_this) +{ + g_return_val_if_fail (a_this, FALSE); + + if (a_this->ref_count > 0) { + a_this->ref_count--; + } + + if (a_this->ref_count == 0) { + cr_doc_handler_destroy (a_this); + return TRUE; + } + return FALSE ; +} + +/** + * cr_doc_handler_destroy: + *@a_this: the instance of #CRDocHandler to + *destroy. + * + *The destructor of the #CRDocHandler class. + */ +void +cr_doc_handler_destroy (CRDocHandler * a_this) +{ + g_return_if_fail (a_this); + + if (a_this->priv) { + g_free (a_this->priv); + a_this->priv = NULL; + } + g_free (a_this); +} + +/** + * cr_doc_handler_associate_a_parser: + *Associates a parser to the current document handler + * + *@a_this: the current instance of document handler. + *@a_parser: the parser to associate. + */ +void +cr_doc_handler_associate_a_parser (CRDocHandler *a_this, + gpointer a_parser) +{ + g_return_if_fail (a_this && PRIVATE (a_this) + && a_parser) ; + + PRIVATE (a_this)->parser = a_parser ; +} diff --git a/src/st/croco/cr-doc-handler.h b/src/st/croco/cr-doc-handler.h new file mode 100644 index 0000000..d12673f --- /dev/null +++ b/src/st/croco/cr-doc-handler.h @@ -0,0 +1,298 @@ +/* -*- Mode: C; indent-tabs-mode: nil; c-basic-offset: 8 -*- */ + +/* + * This file is part of The Croco Library + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of version 2.1 of the GNU Lesser General Public + * License as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 + * USA + * + * See the COPYRIGHTS file for copyright information. + */ + +#ifndef __CR_DOC_HANDLER_H__ +#define __CR_DOC_HANDLER_H__ + +/** + *@file + *The declaration of the #CRDocumentHandler class. + *This class is actually the parsing events handler. + */ + +#include <glib.h> +#include "cr-utils.h" +#include "cr-input.h" +#include "cr-stylesheet.h" + +G_BEGIN_DECLS + + +typedef struct _CRDocHandler CRDocHandler ; + +struct _CRDocHandlerPriv ; +typedef struct _CRDocHandlerPriv CRDocHandlerPriv ; + + +/** + *The SAC document handler. + *An instance of this class is to + *be passed to a parser. Then, during the parsing + *the parser calls the convenient function pointer + *whenever a particular event (a css construction) occurs. + */ +struct _CRDocHandler +{ + CRDocHandlerPriv *priv ; + + /** + *This pointer is to be used by the application for + *it custom needs. It is there to extend the doc handler. + */ + gpointer app_data ; + + /** + *Is called at the beginning of the parsing of the document. + *@param a_this a pointer to the current instance of + *#CRDocHandler. + */ + void (*start_document) (CRDocHandler *a_this) ; + + /** + *Is called to notify the end of the parsing of the document. + *@param a_this a pointer to the current instance of + *#CRDocHandler. + */ + void (*end_document) (CRDocHandler *a_this) ; + + /** + *Is called to notify an at charset rule. + *@param a_this the document handler. + *@param a_charset the declared charset. + */ + void (*charset) (CRDocHandler *a_this, + CRString *a_charset, + CRParsingLocation *a_charset_sym_location) ; + + /** + *Is called to notify an import statement in + *the stylesheet. + *@param a_this the current instance of #CRDocHandler. + *@param a_media_list a doubly linked list of GString objects. + *Each GString object contains a string which is the + *destination media for style information. + *@param a_uri the uri of the imported style sheet. + *@param a_uri_default_ns the default namespace of URI + *@param a_location the parsing location of the '\@import' + *keyword. + *of the imported style sheet. + */ + void (*import_style) (CRDocHandler *a_this, + GList *a_media_list, + CRString *a_uri, + CRString *a_uri_default_ns, + CRParsingLocation *a_location) ; + + void (*import_style_result) (CRDocHandler *a_this, + GList *a_media_list, + CRString *a_uri, + CRString *a_uri_default_ns, + CRStyleSheet *a_sheet) ; + + /** + *Is called to notify a namespace declaration. + *Not used yet. + *@param a_this the current instance of #CRDocHandler. + *@param a_prefix the prefix of the namespace. + *@param a_uri the uri of the namespace. + *@param a_location the location of the "@namespace" keyword. + */ + void (*namespace_declaration) (CRDocHandler *a_this, + CRString *a_prefix, + CRString *a_uri, + CRParsingLocation *a_location) ; + + /** + *Is called to notify a comment. + *@param a_this a pointer to the current instance + *of #CRDocHandler. + *@param a_comment the comment. + */ + void (*comment) (CRDocHandler *a_this, + CRString *a_comment) ; + + /** + *Is called to notify the beginning of a rule + *statement. + *@param a_this the current instance of #CRDocHandler. + *@param a_selector_list the list of selectors that precedes + *the rule declarations. + */ + void (*start_selector) (CRDocHandler * a_this, + CRSelector *a_selector_list) ; + + /** + *Is called to notify the end of a rule statement. + *@param a_this the current instance of #CRDocHandler. + *@param a_selector_list the list of selectors that precedes + *the rule declarations. This pointer is the same as + *the one passed to start_selector() ; + */ + void (*end_selector) (CRDocHandler *a_this, + CRSelector *a_selector_list) ; + + + /** + *Is called to notify a declaration. + *@param a_this a pointer to the current instance + *of #CRDocHandler. + *@param a_name the name of the parsed property. + *@param a_expression a css expression that represents + *the value of the property. A css expression is + *actually a linked list of 'terms'. Each term can + *be linked to other using operators. + * + */ + void (*property) (CRDocHandler *a_this, + CRString *a_name, + CRTerm *a_expression, + gboolean a_is_important) ; + /** + *Is called to notify the start of a font face statement. + *The parser invokes this method at the beginning of every + *font face statement in the style sheet. There will + *be a corresponding end_font_face () event for every + *start_font_face () event. + * + *@param a_this a pointer to the current instance of + *#CRDocHandler. + *@param a_location the parsing location of the "\@font-face" + *keyword. + */ + void (*start_font_face) (CRDocHandler *a_this, + CRParsingLocation *a_location) ; + + /** + *Is called to notify the end of a font face statement. + *@param a_this a pointer to the current instance of + *#CRDocHandler. + */ + void (*end_font_face) (CRDocHandler *a_this) ; + + + /** + *Is called to notify the beginning of a media statement. + *The parser will invoke this method at the beginning of + *every media statement in the style sheet. There will be + *a corresponding end_media() event for every start_media() + *event. + *@param a_this a pointer to the current instance of + *#CRDocHandler. + *@param a_media_list a double linked list of + #CRString * objects. + *Each CRString objects is actually a destination media for + *the style information. + */ + void (*start_media) (CRDocHandler *a_this, + GList *a_media_list, + CRParsingLocation *a_location) ; + + /** + *Is called to notify the end of a media statement. + *@param a_this a pointer to the current instance + *of #CRDocHandler. + *@param a_media_list a double linked list of GString * objects. + *Each GString objects is actually a destination media for + *the style information. + */ + void (*end_media) (CRDocHandler *a_this, + GList *a_media_list) ; + + /** + *Is called to notify the beginning of a page statement. + *The parser invokes this function at the beginning of + *every page statement in the style sheet. There will be + *a corresponding end_page() event for every single + *start_page() event. + *@param a_this a pointer to the current instance of + *#CRDocHandler. + *@param a_name the name of the page (if any, null otherwise). + *@param a_pseudo_page the pseudo page (if any, null otherwise). + *@param a_location the parsing location of the "\@page" keyword. + */ + void (*start_page) (CRDocHandler *a_this, + CRString *a_name, + CRString *a_pseudo_page, + CRParsingLocation *a_location) ; + + /** + *Is called to notify the end of a page statement. + *@param a_this a pointer to the current instance of + *#CRDocHandler. + *@param a_name the name of the page (if any, null otherwise). + *@param a_pseudo_page the pseudo page (if any, null otherwise). + */ + void (*end_page) (CRDocHandler *a_this, + CRString *a_name, + CRString *pseudo_page) ; + + /** + *Is Called to notify an unknown at-rule not supported + *by this parser. + */ + void (*ignorable_at_rule) (CRDocHandler *a_this, + CRString *a_name) ; + + /** + *Is called to notify a parsing error. After this error + *the application must ignore the rule being parsed, if + *any. After completion of this callback, + *the parser will then try to resume the parsing, + *ignoring the current error. + */ + void (*error) (CRDocHandler *a_this) ; + + /** + *Is called to notify an unrecoverable parsing error. + *This is the place to put emergency routines that free allocated + *resources. + */ + void (*unrecoverable_error) (CRDocHandler *a_this) ; + + gboolean resolve_import ; + gulong ref_count ; +} ; + +CRDocHandler * cr_doc_handler_new (void) ; + +enum CRStatus cr_doc_handler_set_result (CRDocHandler *a_this, gpointer a_result) ; + +enum CRStatus cr_doc_handler_get_result (CRDocHandler const *a_this, gpointer * a_result) ; + +enum CRStatus cr_doc_handler_set_ctxt (CRDocHandler *a_this, gpointer a_ctxt) ; + +enum CRStatus cr_doc_handler_get_ctxt (CRDocHandler const *a_this, gpointer * a_ctxt) ; + +enum CRStatus cr_doc_handler_set_default_sac_handler (CRDocHandler *a_this) ; + +void cr_doc_handler_associate_a_parser (CRDocHandler *a_this, + gpointer a_parser) ; + +void cr_doc_handler_ref (CRDocHandler *a_this) ; + +gboolean cr_doc_handler_unref (CRDocHandler *a_this) ; + +void cr_doc_handler_destroy (CRDocHandler *a_this) ; + +G_END_DECLS + +#endif /*__CR_DOC_HANDLER_H__*/ diff --git a/src/st/croco/cr-enc-handler.c b/src/st/croco/cr-enc-handler.c new file mode 100644 index 0000000..65adc7a --- /dev/null +++ b/src/st/croco/cr-enc-handler.c @@ -0,0 +1,184 @@ +/* -*- Mode: C; indent-tabs-mode: nil; c-basic-offset: 8 -*- */ + +/* + * This file is part of The Croco Library + * + * Copyright (C) 2002-2003 Dodji Seketeli <dodji@seketeli.org> + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of version 2.1 of the GNU Lesser General Public + * License as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 + * USA + */ + +/* + *$Id$ + */ + +/** + *@file + *The definition of the #CREncHandler class. + */ + +#include "cr-enc-handler.h" +#include "cr-utils.h" + +#include <string.h> + +struct CREncAlias { + const gchar *name; + enum CREncoding encoding; +}; + +static struct CREncAlias gv_default_aliases[] = { + {"UTF-8", CR_UTF_8}, + {"UTF_8", CR_UTF_8}, + {"UTF8", CR_UTF_8}, + {"UTF-16", CR_UTF_16}, + {"UTF_16", CR_UTF_16}, + {"UTF16", CR_UTF_16}, + {"UCS1", CR_UCS_1}, + {"UCS-1", CR_UCS_1}, + {"UCS_1", CR_UCS_1}, + {"ISO-8859-1", CR_UCS_1}, + {"ISO_8859-1", CR_UCS_1}, + {"UCS-1", CR_UCS_1}, + {"UCS_1", CR_UCS_1}, + {"UCS4", CR_UCS_4}, + {"UCS-4", CR_UCS_4}, + {"UCS_4", CR_UCS_4}, + {"ASCII", CR_ASCII}, + {0, 0} +}; + +static CREncHandler gv_default_enc_handlers[] = { + {CR_UCS_1, cr_utils_ucs1_to_utf8, cr_utils_utf8_to_ucs1, + cr_utils_ucs1_str_len_as_utf8, cr_utils_utf8_str_len_as_ucs1}, + + {CR_ISO_8859_1, cr_utils_ucs1_to_utf8, cr_utils_utf8_to_ucs1, + cr_utils_ucs1_str_len_as_utf8, cr_utils_utf8_str_len_as_ucs1}, + + {CR_ASCII, cr_utils_ucs1_to_utf8, cr_utils_utf8_to_ucs1, + cr_utils_ucs1_str_len_as_utf8, cr_utils_utf8_str_len_as_ucs1}, + + {0, NULL, NULL, NULL, NULL} +}; + +/** + * cr_enc_handler_get_instance: + *@a_enc: the encoding of the Handler. + * + *Gets the instance of encoding handler. + *This function implements a singleton pattern. + * + *Returns the instance of #CREncHandler. + */ +CREncHandler * +cr_enc_handler_get_instance (enum CREncoding a_enc) +{ + gulong i = 0; + + for (i = 0; gv_default_enc_handlers[i].encoding; i++) { + if (gv_default_enc_handlers[i].encoding == a_enc) { + return (CREncHandler *) & gv_default_enc_handlers[i]; + } + } + + return NULL; +} + +/** + * cr_enc_handler_resolve_enc_alias: + *@a_alias_name: the encoding name. + *@a_enc: output param. The returned encoding type + *or 0 if the alias is not supported. + * + *Given an encoding name (called an alias name) + *the function returns the matching encoding type. + * + *Returns CR_OK upon successful completion, an error code otherwise. + */ +enum CRStatus +cr_enc_handler_resolve_enc_alias (const guchar * a_alias_name, + enum CREncoding *a_enc) +{ + gulong i = 0; + guchar *alias_name_up = NULL; + enum CRStatus status = CR_ENCODING_NOT_FOUND_ERROR; + + g_return_val_if_fail (a_alias_name != NULL, CR_BAD_PARAM_ERROR); + + alias_name_up = (guchar *) g_ascii_strup ((const gchar *) a_alias_name, -1); + + for (i = 0; gv_default_aliases[i].name; i++) { + if (!strcmp (gv_default_aliases[i].name, (const gchar *) alias_name_up)) { + *a_enc = gv_default_aliases[i].encoding; + status = CR_OK; + break; + } + } + + return status; +} + +/** + * cr_enc_handler_convert_input: + *@a_this: the current instance of #CREncHandler. + *@a_in: the input buffer to convert. + *@a_in_len: in/out parameter. The len of the input + *buffer to convert. After return, contains the number of + *bytes actually consumed. + *@a_out: output parameter. The converted output buffer. + *Must be freed by the buffer. + *@a_out_len: output parameter. The length of the output buffer. + * + *Converts a raw input buffer into an utf8 buffer. + * + *Returns CR_OK upon successful completion, an error code otherwise. + */ +enum CRStatus +cr_enc_handler_convert_input (CREncHandler * a_this, + const guchar * a_in, + gulong * a_in_len, + guchar ** a_out, gulong * a_out_len) +{ + enum CRStatus status = CR_OK; + + g_return_val_if_fail (a_this && a_in && a_in_len && a_out, + CR_BAD_PARAM_ERROR); + + if (a_this->decode_input == NULL) + return CR_OK; + + if (a_this->enc_str_len_as_utf8) { + status = a_this->enc_str_len_as_utf8 (a_in, + &a_in[*a_in_len - 1], + a_out_len); + + g_return_val_if_fail (status == CR_OK, status); + } else { + *a_out_len = *a_in_len; + } + + *a_out = g_malloc0 (*a_out_len); + + status = a_this->decode_input (a_in, a_in_len, *a_out, a_out_len); + + if (status != CR_OK) { + g_free (*a_out); + *a_out = NULL; + } + + g_return_val_if_fail (status == CR_OK, status); + + return CR_OK; +} diff --git a/src/st/croco/cr-enc-handler.h b/src/st/croco/cr-enc-handler.h new file mode 100644 index 0000000..0727764 --- /dev/null +++ b/src/st/croco/cr-enc-handler.h @@ -0,0 +1,94 @@ +/* -*- Mode: C; indent-tabs-mode: nil; c-basic-offset: 8 -*- */ + +/* + * This file is part of The Croco Library + * + * Copyright (C) 2002-2003 Dodji Seketeli <dodji@seketeli.org> + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of version 2.1 of the GNU Lesser General Public + * License as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 + * USA + */ + +/* + *$Id$ + */ + +/** + *@file: + *The declaration of the #CREncHandler class. + * + */ + +#ifndef __CR_ENC_HANDLER_H__ +#define __CR_ENC_HANDLER_H__ + +#include "cr-utils.h" + +G_BEGIN_DECLS + + +typedef struct _CREncHandler CREncHandler ; + +typedef enum CRStatus (*CREncInputFunc) (const guchar * a_in, + gulong *a_in_len, + guchar *a_out, + gulong *a_out_len) ; + +typedef enum CRStatus (*CREncOutputFunc) (const guchar * a_in, + gulong *a_in_len, + guchar *a_out, + gulong *a_out_len) ; + +typedef enum CRStatus (*CREncInputStrLenAsUtf8Func) +(const guchar *a_in_start, + const guchar *a_in_end, + gulong *a_in_size); + +typedef enum CRStatus (*CREncUtf8StrLenAsOutputFunc) +(const guchar *a_in_start, + const guchar *a_in_end, + gulong *a_in_size) ; + +/** + *This class is responsible of the + *the encoding conversions stuffs in + *libcroco. + */ + +struct _CREncHandler +{ + enum CREncoding encoding ; + CREncInputFunc decode_input ; + CREncInputFunc encode_output ; + CREncInputStrLenAsUtf8Func enc_str_len_as_utf8 ; + CREncUtf8StrLenAsOutputFunc utf8_str_len_as_enc ; +} ; + +CREncHandler * +cr_enc_handler_get_instance (enum CREncoding a_enc) ; + +enum CRStatus +cr_enc_handler_resolve_enc_alias (const guchar *a_alias_name, + enum CREncoding *a_enc) ; + +enum CRStatus +cr_enc_handler_convert_input (CREncHandler *a_this, + const guchar *a_in, + gulong *a_in_len, + guchar **a_out, + gulong *a_out_len) ; + +G_END_DECLS + +#endif /*__CR_ENC_HANDLER_H__*/ diff --git a/src/st/croco/cr-fonts.c b/src/st/croco/cr-fonts.c new file mode 100644 index 0000000..a64ffc0 --- /dev/null +++ b/src/st/croco/cr-fonts.c @@ -0,0 +1,948 @@ +/* -*- Mode: C; indent-tabs-mode:nil; c-basic-offset: 8-*- */ + +/* + * This file is part of The Croco Library + * + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of version 2.1 of + * the GNU Lesser General Public + * License as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the + * GNU Lesser General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 + * USA + * + *See COPYRIGHTS file for copyright information + */ + +#include "cr-fonts.h" +#include <string.h> + +static enum CRStatus +cr_font_family_to_string_real (CRFontFamily const * a_this, + gboolean a_walk_list, GString ** a_string) +{ + guchar const *name = NULL; + enum CRStatus result = CR_OK; + + if (!*a_string) { + *a_string = g_string_new (NULL); + g_return_val_if_fail (*a_string, + CR_INSTANCIATION_FAILED_ERROR); + } + + if (!a_this) { + g_string_append (*a_string, "NULL"); + return CR_OK; + } + + switch (a_this->type) { + case FONT_FAMILY_SANS_SERIF: + name = (guchar const *) "sans-serif"; + break; + + case FONT_FAMILY_SERIF: + name = (guchar const *) "sans-serif"; + break; + + case FONT_FAMILY_CURSIVE: + name = (guchar const *) "cursive"; + break; + + case FONT_FAMILY_FANTASY: + name = (guchar const *) "fantasy"; + break; + + case FONT_FAMILY_MONOSPACE: + name = (guchar const *) "monospace"; + break; + + case FONT_FAMILY_NON_GENERIC: + name = (guchar const *) a_this->name; + break; + + default: + name = NULL; + break; + } + + if (name) { + if (a_this->prev) { + g_string_append_printf (*a_string, ", %s", name); + } else { + g_string_append (*a_string, (const gchar *) name); + } + } + if (a_walk_list == TRUE && a_this->next) { + result = cr_font_family_to_string_real (a_this->next, + TRUE, a_string); + } + return result; +} + +static const gchar * +cr_predefined_absolute_font_size_to_string (enum CRPredefinedAbsoluteFontSize + a_code) +{ + gchar const *str = NULL; + + switch (a_code) { + case FONT_SIZE_XX_SMALL: + str = "xx-small"; + break; + case FONT_SIZE_X_SMALL: + str = "x-small"; + break; + case FONT_SIZE_SMALL: + str = "small"; + break; + case FONT_SIZE_MEDIUM: + str = "medium"; + break; + case FONT_SIZE_LARGE: + str = "large"; + break; + case FONT_SIZE_X_LARGE: + str = "x-large"; + break; + case FONT_SIZE_XX_LARGE: + str = "xx-large"; + break; + default: + str = "unknown absolute font size value"; + } + return str; +} + +static const gchar * +cr_relative_font_size_to_string (enum CRRelativeFontSize a_code) +{ + gchar const *str = NULL; + + switch (a_code) { + case FONT_SIZE_LARGER: + str = "larger"; + break; + case FONT_SIZE_SMALLER: + str = "smaller"; + break; + default: + str = "unknown relative font size value"; + break; + } + return str; +} + +/** + * cr_font_family_new: + * @a_type: the type of font family to create. + * @a_name: the name of the font family. + * + * create a font family. + * + * Returns the newly built font family. + */ +CRFontFamily * +cr_font_family_new (enum CRFontFamilyType a_type, guchar * a_name) +{ + CRFontFamily *result = NULL; + + result = g_try_malloc (sizeof (CRFontFamily)); + + if (!result) { + cr_utils_trace_info ("Out of memory"); + return NULL; + } + + memset (result, 0, sizeof (CRFontFamily)); + result->type = a_type; + + cr_font_family_set_name (result, a_name); + + return result; +} + +/** + * cr_font_family_to_string: + * @a_this: the current instance of #CRFontFamily. + * @a_walk_font_family_list: whether the serialize the entire list. + * + * Returns the seriliazed font family. The caller has to free it using + * g_free(). + */ +guchar * +cr_font_family_to_string (CRFontFamily const * a_this, + gboolean a_walk_font_family_list) +{ + enum CRStatus status = CR_OK; + guchar *result = NULL; + GString *stringue = NULL; + + if (!a_this) { + result = (guchar *) g_strdup ("NULL"); + g_return_val_if_fail (result, NULL); + return result; + } + status = cr_font_family_to_string_real (a_this, + a_walk_font_family_list, + &stringue); + + if (status == CR_OK && stringue) { + result = (guchar *) g_string_free (stringue, FALSE); + stringue = NULL; + + } else { + if (stringue) { + g_string_free (stringue, TRUE); + stringue = NULL; + } + } + + return result; +} + +/** + * cr_font_family_set_name: + * @a_this: the current instance of #CRFontFamily. + * @a_name: the new name + * + * Returns CR_OK upon successful completion, an error code otherwise. + */ +enum CRStatus +cr_font_family_set_name (CRFontFamily * a_this, guchar * a_name) +{ + g_return_val_if_fail (a_this, CR_BAD_PARAM_ERROR); + + /* + *only non generic font families can have a name + */ + + if (a_this->type != FONT_FAMILY_NON_GENERIC) { + return CR_BAD_PARAM_ERROR; + } + + if (a_this->name) { + g_free (a_this->name); + a_this->name = NULL; + } + + a_this->name = a_name; + return CR_OK; +} + +/** + * cr_font_family_append: + * @a_this: the current instance of #CRFontFamily. + * @a_family_to_append: the font family to append to the list + * + * Returns the new font family list. + */ +CRFontFamily * +cr_font_family_append (CRFontFamily * a_this, + CRFontFamily * a_family_to_append) +{ + CRFontFamily *cur_ff = NULL; + + g_return_val_if_fail (a_family_to_append, NULL); + + if (!a_this) + return a_family_to_append; + + for (cur_ff = a_this; cur_ff && cur_ff->next; cur_ff = cur_ff->next) ; + + cur_ff->next = a_family_to_append; + a_family_to_append->prev = cur_ff; + + return a_this; + +} + +/** + * cr_font_family_prepend: + * @a_this: the current instance #CRFontFamily. + * @a_family_to_prepend: the font family to prepend to the list. + * + * Returns the font family list. + */ +CRFontFamily * +cr_font_family_prepend (CRFontFamily * a_this, + CRFontFamily * a_family_to_prepend) +{ + g_return_val_if_fail (a_this && a_family_to_prepend, NULL); + + if (!a_this) + return a_family_to_prepend; + + a_family_to_prepend->next = a_this; + a_this->prev = a_family_to_prepend; + + return a_family_to_prepend; +} + +/** + * cr_font_family_destroy: + * @a_this: the current instance of #CRFontFamily. + * + * Returns CR_OK upon successful completion, an error code otherwise. + */ +enum CRStatus +cr_font_family_destroy (CRFontFamily * a_this) +{ + CRFontFamily *cur_ff = NULL; + + g_return_val_if_fail (a_this, CR_BAD_PARAM_ERROR); + + for (cur_ff = a_this; cur_ff && cur_ff->next; cur_ff = cur_ff->next) ; + + for (; cur_ff; cur_ff = cur_ff->prev) { + if (a_this->name) { + g_free (a_this->name); + a_this->name = NULL; + } + + if (cur_ff->next) { + g_free (cur_ff->next); + + } + + if (cur_ff->prev == NULL) { + g_free (a_this); + } + } + + return CR_OK; +} + +/*************************************************** + *'font-size' manipulation functions definitions + ***************************************************/ + +/** + * cr_font_size_new: + * + * Returns the newly created font size. + */ +CRFontSize * +cr_font_size_new (void) +{ + CRFontSize *result = NULL; + + result = g_try_malloc (sizeof (CRFontSize)); + if (!result) { + cr_utils_trace_info ("Out of memory"); + return NULL; + } + memset (result, 0, sizeof (CRFontSize)); + + return result; +} + +/** + * cr_font_size_clear: + * @a_this: the current instance of #CRFontSize + * + * Returns CR_OK upon successful completion, an error code otherwise. + */ +enum CRStatus +cr_font_size_clear (CRFontSize * a_this) +{ + g_return_val_if_fail (a_this, CR_BAD_PARAM_ERROR); + + switch (a_this->type) { + case PREDEFINED_ABSOLUTE_FONT_SIZE: + case RELATIVE_FONT_SIZE: + case INHERITED_FONT_SIZE: + memset (a_this, 0, sizeof (CRFontSize)); + break; + + case ABSOLUTE_FONT_SIZE: + memset (a_this, 0, sizeof (CRFontSize)); + break; + + default: + return CR_UNKNOWN_TYPE_ERROR; + } + + return CR_OK; +} + +/** + * cr_font_size_copy: + * @a_dst: the destination #CRFontSize (where to copy to). + * @a_src: the source #CRFontSize (where to copy from). + * + * Returns CR_OK upon successful completion, an error code otherwise. + */ +enum CRStatus +cr_font_size_copy (CRFontSize * a_dst, CRFontSize const * a_src) +{ + g_return_val_if_fail (a_dst && a_src, CR_BAD_PARAM_ERROR); + + switch (a_src->type) { + case PREDEFINED_ABSOLUTE_FONT_SIZE: + case RELATIVE_FONT_SIZE: + case INHERITED_FONT_SIZE: + cr_font_size_clear (a_dst); + memcpy (a_dst, a_src, sizeof (CRFontSize)); + break; + + case ABSOLUTE_FONT_SIZE: + cr_font_size_clear (a_dst); + cr_num_copy (&a_dst->value.absolute, + &a_src->value.absolute); + a_dst->type = a_src->type; + break; + + default: + return CR_UNKNOWN_TYPE_ERROR; + } + return CR_OK; +} + +/** + * cr_font_size_set_predefined_absolute_font_size: + * @a_this: the current instance of #CRFontSize. + * @a_predefined: what to set. + * + * Returns CR_OK upon successful completion, an error code otherwise. + */ +enum CRStatus +cr_font_size_set_predefined_absolute_font_size (CRFontSize *a_this, + enum CRPredefinedAbsoluteFontSize a_predefined) +{ + g_return_val_if_fail (a_this, CR_BAD_PARAM_ERROR) ; + g_return_val_if_fail (a_predefined >= FONT_SIZE_XX_SMALL + && a_predefined < NB_PREDEFINED_ABSOLUTE_FONT_SIZES, + CR_BAD_PARAM_ERROR) ; + + a_this->type = PREDEFINED_ABSOLUTE_FONT_SIZE ; + a_this->value.predefined = a_predefined ; + + return CR_OK ; +} + +/** + * cr_font_size_set_relative_font_size: + * @a_this: the current instance of #CRFontSize + * @a_relative: the new relative font size + * + * Returns CR_OK upon successful completion, an error code otherwise. + */ +enum CRStatus +cr_font_size_set_relative_font_size (CRFontSize *a_this, + enum CRRelativeFontSize a_relative) +{ + g_return_val_if_fail (a_this, CR_BAD_PARAM_ERROR) ; + g_return_val_if_fail (a_relative >= FONT_SIZE_LARGER + && a_relative < NB_RELATIVE_FONT_SIZE, + CR_BAD_PARAM_ERROR) ; + + a_this->type = RELATIVE_FONT_SIZE ; + a_this->value.relative = a_relative ; + return CR_OK ; +} + +/** + * cr_font_size_set_absolute_font_size: + * @a_this: the current instance of #CRFontSize + * @a_num_type: the type of number to set. + * @a_value: the actual value to set. + * + * Returns CR_OK upon successful completion, an error code otherwise. + */ +enum CRStatus +cr_font_size_set_absolute_font_size (CRFontSize *a_this, + enum CRNumType a_num_type, + gdouble a_value) +{ + g_return_val_if_fail (a_this, CR_BAD_PARAM_ERROR) ; + g_return_val_if_fail (a_num_type >= NUM_AUTO + && a_num_type < NB_NUM_TYPE, + CR_BAD_PARAM_ERROR) ; + + a_this->type = ABSOLUTE_FONT_SIZE ; + cr_num_set (&a_this->value.absolute, + a_value, a_num_type) ; + return CR_OK ; +} + +/** + * cr_font_size_set_to_inherit: + * @a_this: the current instance of #CRFontSize + * + * Returns CR_OK upon successful completion, an error code otherwise. + */ +enum CRStatus +cr_font_size_set_to_inherit (CRFontSize *a_this) +{ + g_return_val_if_fail (a_this, CR_BAD_PARAM_ERROR) ; + + cr_font_size_clear (a_this) ; + a_this->type = INHERITED_FONT_SIZE ; + + return CR_OK ; +} + +/** + * cr_font_size_is_set_to_inherit: + * @a_this: the current instance of #CRFontSize. + * + * Returns TRUE if the current instance is set to 'inherit'. + */ +gboolean +cr_font_size_is_set_to_inherit (CRFontSize const *a_this) +{ + g_return_val_if_fail (a_this, FALSE) ; + + return a_this->type == INHERITED_FONT_SIZE ; +} + +/** + * cr_font_size_to_string: + * @a_this: the current instance of #CRFontSize + * + * Returns the serialized form of #CRFontSize. The returned string + * has to bee freed using g_free(). + */ +gchar * +cr_font_size_to_string (CRFontSize const * a_this) +{ + gchar *str = NULL; + + if (!a_this) { + str = g_strdup ("NULL"); + g_return_val_if_fail (str, NULL); + return str; + } + switch (a_this->type) { + case PREDEFINED_ABSOLUTE_FONT_SIZE: + str = g_strdup (cr_predefined_absolute_font_size_to_string + (a_this->value.predefined)); + break; + case ABSOLUTE_FONT_SIZE: + str = (gchar *) cr_num_to_string (&a_this->value.absolute); + break; + case RELATIVE_FONT_SIZE: + str = g_strdup (cr_relative_font_size_to_string + (a_this->value.relative)); + break; + case INHERITED_FONT_SIZE: + str = g_strdup ("inherit"); + break; + default: + break; + } + return str; +} + +/** + * cr_font_size_get_smaller_predefined: + * @a_font_size: the font size to consider. + * @a_smaller_size: out parameter. The a smaller value than @a_font_size. + */ +void +cr_font_size_get_smaller_predefined_font_size + (enum CRPredefinedAbsoluteFontSize a_font_size, + enum CRPredefinedAbsoluteFontSize *a_smaller_size) +{ + enum CRPredefinedAbsoluteFontSize result = FONT_SIZE_MEDIUM ; + + g_return_if_fail (a_smaller_size) ; + g_return_if_fail (a_font_size < NB_PREDEFINED_ABSOLUTE_FONT_SIZES + && a_font_size >= FONT_SIZE_XX_SMALL) ; + + switch (a_font_size) { + case FONT_SIZE_XX_SMALL: + result = FONT_SIZE_XX_SMALL ; + break ; + case FONT_SIZE_X_SMALL: + result = FONT_SIZE_XX_SMALL ; + break ; + case FONT_SIZE_SMALL: + result = FONT_SIZE_X_SMALL; + break ; + case FONT_SIZE_MEDIUM: + result = FONT_SIZE_SMALL; + break ; + case FONT_SIZE_LARGE: + result = FONT_SIZE_MEDIUM; + break ; + case FONT_SIZE_X_LARGE: + result = FONT_SIZE_LARGE; + break ; + case FONT_SIZE_XX_LARGE: + result = FONT_SIZE_XX_LARGE; + break ; + case FONT_SIZE_INHERIT: + cr_utils_trace_info ("can't return a smaller size for FONT_SIZE_INHERIT") ; + result = FONT_SIZE_MEDIUM ; + break ; + default: + cr_utils_trace_info ("Unknown FONT_SIZE") ; + result = FONT_SIZE_MEDIUM ; + break ; + } + *a_smaller_size = result ; +} + + +/** + * cr_font_size_get_larger_predefined_font_size: + * @a_font_size: the font size to consider. + * @a_larger_size: out parameter. the font size considered larger than + * @a_font_size. + * + */ +void +cr_font_size_get_larger_predefined_font_size + (enum CRPredefinedAbsoluteFontSize a_font_size, + enum CRPredefinedAbsoluteFontSize *a_larger_size) +{ + enum CRPredefinedAbsoluteFontSize result = FONT_SIZE_MEDIUM ; + + g_return_if_fail (a_larger_size) ; + g_return_if_fail (a_font_size >= FONT_SIZE_XX_SMALL + && a_font_size < NB_PREDEFINED_ABSOLUTE_FONT_SIZES) ; + + switch (a_font_size) { + case FONT_SIZE_XX_SMALL: + result = FONT_SIZE_X_SMALL ; + break ; + case FONT_SIZE_X_SMALL: + result = FONT_SIZE_SMALL ; + break ; + case FONT_SIZE_SMALL: + result = FONT_SIZE_MEDIUM; + break ; + case FONT_SIZE_MEDIUM: + result = FONT_SIZE_LARGE; + break ; + case FONT_SIZE_LARGE: + result = FONT_SIZE_X_LARGE; + break ; + case FONT_SIZE_X_LARGE: + result = FONT_SIZE_XX_LARGE ; + break ; + case FONT_SIZE_XX_LARGE: + result = FONT_SIZE_XX_LARGE; + break ; + case FONT_SIZE_INHERIT: + cr_utils_trace_info ("can't return a bigger size for FONT_SIZE_INHERIT") ; + result = FONT_SIZE_MEDIUM ; + break ; + default: + cr_utils_trace_info ("Unknown FONT_SIZE") ; + result = FONT_SIZE_MEDIUM ; + break ; + } + *a_larger_size = result ; +} + +/** + * cr_font_size_is_predefined_absolute_font_size: + * @a_font_size: the font size to consider. + * + * Returns TRUE if the instance is an predefined absolute font size, FALSE + * otherwise. + */ +gboolean +cr_font_size_is_predefined_absolute_font_size + (enum CRPredefinedAbsoluteFontSize a_font_size) +{ + if (a_font_size >= FONT_SIZE_XX_SMALL + && a_font_size < NB_PREDEFINED_ABSOLUTE_FONT_SIZES) { + return TRUE ; + } else { + return FALSE ; + } +} + +/** + * cr_font_size_adjust_to_string: + * @a_this: the instance of #CRFontSizeAdjust. + * + * Returns the serialized form of #CRFontSizeAdjust + */ +gchar * +cr_font_size_adjust_to_string (CRFontSizeAdjust const * a_this) +{ + gchar *str = NULL; + + if (!a_this) { + str = g_strdup ("NULL"); + g_return_val_if_fail (str, NULL); + return str; + } + + switch (a_this->type) { + case FONT_SIZE_ADJUST_NONE: + str = g_strdup ("none"); + break; + case FONT_SIZE_ADJUST_NUMBER: + if (a_this->num) + str = (gchar *) cr_num_to_string (a_this->num); + else + str = g_strdup ("unknown font-size-adjust property value"); /* Should raise an error no?*/ + break; + case FONT_SIZE_ADJUST_INHERIT: + str = g_strdup ("inherit"); + } + return str; +} + +/** + * cr_font_style_to_string: + * @a_code: the current instance of #CRFontStyle . + * + * Returns the serialized #CRFontStyle. The caller must free the returned + * string using g_free(). + */ +const gchar * +cr_font_style_to_string (enum CRFontStyle a_code) +{ + gchar *str = NULL; + + switch (a_code) { + case FONT_STYLE_NORMAL: + str = (gchar *) "normal"; + break; + case FONT_STYLE_ITALIC: + str = (gchar *) "italic"; + break; + case FONT_STYLE_OBLIQUE: + str = (gchar *) "oblique"; + break; + case FONT_STYLE_INHERIT: + str = (gchar *) "inherit"; + break; + default: + str = (gchar *) "unknown font style value"; + break; + } + return str; +} + +/** + * cr_font_variant_to_string: + * @a_code: the current instance of #CRFontVariant. + * + * Returns the serialized form of #CRFontVariant. The caller has + * to free the returned string using g_free(). + */ +const gchar * +cr_font_variant_to_string (enum CRFontVariant a_code) +{ + gchar *str = NULL; + + switch (a_code) { + case FONT_VARIANT_NORMAL: + str = (gchar *) "normal"; + break; + case FONT_VARIANT_SMALL_CAPS: + str = (gchar *) "small-caps"; + break; + case FONT_VARIANT_INHERIT: + str = (gchar *) "inherit"; + break; + } + return str; +} + +/** + * cr_font_weight_get_bolder: + * @a_weight: the #CRFontWeight to consider. + * + * Returns a font weight bolder than @a_weight + */ +enum CRFontWeight +cr_font_weight_get_bolder (enum CRFontWeight a_weight) +{ + if (a_weight == FONT_WEIGHT_INHERIT) { + cr_utils_trace_info ("can't return a bolder weight for FONT_WEIGHT_INHERIT") ; + return a_weight; + } else if (a_weight >= FONT_WEIGHT_900) { + return FONT_WEIGHT_900 ; + } else if (a_weight < FONT_WEIGHT_NORMAL) { + return FONT_WEIGHT_NORMAL ; + } else if (a_weight == FONT_WEIGHT_BOLDER + || a_weight == FONT_WEIGHT_LIGHTER) { + cr_utils_trace_info ("FONT_WEIGHT_BOLDER or FONT_WEIGHT_LIGHTER should not appear here") ; + return FONT_WEIGHT_NORMAL ; + } else { + return a_weight << 1 ; + } +} + +/** + * cr_font_weight_to_string: + * @a_code: the font weight to consider. + * + * Returns the serialized form of #CRFontWeight. + */ +const gchar * +cr_font_weight_to_string (enum CRFontWeight a_code) +{ + gchar *str = NULL; + + switch (a_code) { + case FONT_WEIGHT_NORMAL: + str = (gchar *) "normal"; + break; + case FONT_WEIGHT_BOLD: + str = (gchar *) "bold"; + break; + case FONT_WEIGHT_BOLDER: + str = (gchar *) "bolder"; + break; + case FONT_WEIGHT_LIGHTER: + str = (gchar *) "lighter"; + break; + case FONT_WEIGHT_100: + str = (gchar *) "100"; + break; + case FONT_WEIGHT_200: + str = (gchar *) "200"; + break; + case FONT_WEIGHT_300: + str = (gchar *) "300"; + break; + case FONT_WEIGHT_400: + str = (gchar *) "400"; + break; + case FONT_WEIGHT_500: + str = (gchar *) "500"; + break; + case FONT_WEIGHT_600: + str = (gchar *) "600"; + break; + case FONT_WEIGHT_700: + str = (gchar *) "700"; + break; + case FONT_WEIGHT_800: + str = (gchar *) "800"; + break; + case FONT_WEIGHT_900: + str = (gchar *) "900"; + break; + case FONT_WEIGHT_INHERIT: + str = (gchar *) "inherit"; + break; + default: + str = (gchar *) "unknown font-weight property value"; + break; + } + return str; +} + +/** + * cr_font_stretch_to_string: + * @a_code: the instance of #CRFontStretch to consider. + * + * Returns the serialized form of #CRFontStretch. + */ +const gchar * +cr_font_stretch_to_string (enum CRFontStretch a_code) +{ + gchar *str = NULL; + + switch (a_code) { + case FONT_STRETCH_NORMAL: + str = (gchar *) "normal"; + break; + case FONT_STRETCH_WIDER: + str = (gchar *) "wider"; + break; + case FONT_STRETCH_NARROWER: + str = (gchar *) "narrower"; + break; + case FONT_STRETCH_ULTRA_CONDENSED: + str = (gchar *) "ultra-condensed"; + break; + case FONT_STRETCH_EXTRA_CONDENSED: + str = (gchar *) "extra-condensed"; + break; + case FONT_STRETCH_CONDENSED: + str = (gchar *) "condensed"; + break; + case FONT_STRETCH_SEMI_CONDENSED: + str = (gchar *) "semi-condensed"; + break; + case FONT_STRETCH_SEMI_EXPANDED: + str = (gchar *) "semi-expanded"; + break; + case FONT_STRETCH_EXPANDED: + str = (gchar *) "expanded"; + break; + case FONT_STRETCH_EXTRA_EXPANDED: + str = (gchar *) "extra-expaned"; + break; + case FONT_STRETCH_ULTRA_EXPANDED: + str = (gchar *) "ultra-expanded"; + break; + case FONT_STRETCH_INHERIT: + str = (gchar *) "inherit"; + break; + } + return str; +} + +/** + * cr_font_size_destroy: + * @a_font_size: the font size to destroy + * + */ +void +cr_font_size_destroy (CRFontSize * a_font_size) +{ + g_return_if_fail (a_font_size); + + g_free (a_font_size) ; +} + +/******************************************************* + *'font-size-adjust' manipulation function definition + *******************************************************/ + +/** + * cr_font_size_adjust_new: + * + * Returns a newly built instance of #CRFontSizeAdjust + */ +CRFontSizeAdjust * +cr_font_size_adjust_new (void) +{ + CRFontSizeAdjust *result = NULL; + + result = g_try_malloc (sizeof (CRFontSizeAdjust)); + if (!result) { + cr_utils_trace_info ("Out of memory"); + return NULL; + } + memset (result, 0, sizeof (CRFontSizeAdjust)); + + return result; +} + +/** + * cr_font_size_adjust_destroy: + * @a_this: the current instance of #CRFontSizeAdjust. + * + */ +void +cr_font_size_adjust_destroy (CRFontSizeAdjust * a_this) +{ + g_return_if_fail (a_this); + + if (a_this->type == FONT_SIZE_ADJUST_NUMBER && a_this->num) { + cr_num_destroy (a_this->num); + a_this->num = NULL; + } +} diff --git a/src/st/croco/cr-fonts.h b/src/st/croco/cr-fonts.h new file mode 100644 index 0000000..9eaeeeb --- /dev/null +++ b/src/st/croco/cr-fonts.h @@ -0,0 +1,315 @@ +/* -*- Mode: C; indent-tabs-mode:nil; c-basic-offset: 8-*- */ + +/* + * This file is part of The Croco Library + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of version 2.1 of + * the GNU Lesser General Public + * License as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the + * GNU Lesser General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 + * USA + * + * Author: Dodji Seketeli + * See COPYRIGHTS file for copyright information. + */ + +#ifndef __CR_FONTS_H__ +#define __CR_FONTS_H__ + +#include "cr-utils.h" +#include "cr-num.h" + +/** + *@file + *Various type declarations about font selection related + *properties. + */ +G_BEGIN_DECLS + + +enum CRFontFamilyType +{ + FONT_FAMILY_SANS_SERIF, + FONT_FAMILY_SERIF, + FONT_FAMILY_CURSIVE, + FONT_FAMILY_FANTASY, + FONT_FAMILY_MONOSPACE, + FONT_FAMILY_NON_GENERIC, + FONT_FAMILY_INHERIT, + /**/ + NB_FONT_FAMILIE_TYPES +} ; + +typedef struct _CRFontFamily CRFontFamily ; + +struct _CRFontFamily +{ + enum CRFontFamilyType type ; + + /* + *The name of the font family, in case + *it is non generic. + *Is set only if the type is FONT_FAMILY_NON_GENERIC. + */ + guchar *name ; + + CRFontFamily *next ; + CRFontFamily *prev ; +} ; + + +/** + *The different types + *of absolute font size. + *This is used by the 'font-size' + *property defined in css2 spec + *in chapter 15.2.4 . + *These values a indexes of + *table of size so please, do not + *change their definition order unless + *you know what you are doing. + */ +enum CRPredefinedAbsoluteFontSize +{ + FONT_SIZE_XX_SMALL=0, + FONT_SIZE_X_SMALL, + FONT_SIZE_SMALL, + FONT_SIZE_MEDIUM, + FONT_SIZE_LARGE, + FONT_SIZE_X_LARGE, + FONT_SIZE_XX_LARGE, + FONT_SIZE_INHERIT, + NB_PREDEFINED_ABSOLUTE_FONT_SIZES +} ; + +/** + *The different types + *of relative font size. + *This is used by the 'font-size' + *property defined in css2 spec + *in chapter 15.2.4 . + *These values a indexes of + *table of size so please, do not + *change their definition order unless + *you know what you are doing. + */ +enum CRRelativeFontSize +{ + FONT_SIZE_LARGER, + FONT_SIZE_SMALLER, + NB_RELATIVE_FONT_SIZE +} ; + +/** + *The type of font-size property. + *Used to define the type of #CRFontSize . + *See css2 spec chapter 15.2.4 to understand. + */ +enum CRFontSizeType { + /** + *If the type of #CRFontSize is + *PREDEFINED_ABSOLUTE_FONT_SIZE, + *the CRFontSize::value.predefined_absolute + *field will be defined. + */ + PREDEFINED_ABSOLUTE_FONT_SIZE, + + /** + *If the type of #CRFontSize is + *ABSOLUTE_FONT_SIZE, + *the CRFontSize::value.absolute + *field will be defined. + */ + ABSOLUTE_FONT_SIZE, + + /** + *If the type of #CRFontSize is + *RELATIVE_FONT_SIZE, + *the CRFontSize::value.relative + *field will be defined. + */ + RELATIVE_FONT_SIZE, + + /** + *If the type of #CRFontSize is + *INHERITED_FONT_SIZE, + *the None of the field of the CRFontSize::value enum + *will be defined. + */ + INHERITED_FONT_SIZE, + + NB_FONT_SIZE_TYPE +} ; + +typedef struct _CRFontSize CRFontSize ; +struct _CRFontSize { + enum CRFontSizeType type ; + union { + enum CRPredefinedAbsoluteFontSize predefined ; + enum CRRelativeFontSize relative ; + CRNum absolute ; + } value; +} ; + +enum CRFontSizeAdjustType +{ + FONT_SIZE_ADJUST_NONE = 0, + FONT_SIZE_ADJUST_NUMBER, + FONT_SIZE_ADJUST_INHERIT +} ; +typedef struct _CRFontSizeAdjust CRFontSizeAdjust ; +struct _CRFontSizeAdjust +{ + enum CRFontSizeAdjustType type ; + CRNum *num ; +} ; + +enum CRFontStyle +{ + FONT_STYLE_NORMAL=0, + FONT_STYLE_ITALIC, + FONT_STYLE_OBLIQUE, + FONT_STYLE_INHERIT +} ; + +enum CRFontVariant +{ + FONT_VARIANT_NORMAL=0, + FONT_VARIANT_SMALL_CAPS, + FONT_VARIANT_INHERIT +} ; + +enum CRFontWeight +{ + FONT_WEIGHT_NORMAL = 1, + FONT_WEIGHT_BOLD = 1<<1, + FONT_WEIGHT_BOLDER = 1<<2, + FONT_WEIGHT_LIGHTER = 1<<3, + FONT_WEIGHT_100 = 1<<4, + FONT_WEIGHT_200 = 1<<5, + FONT_WEIGHT_300 = 1<<6, + FONT_WEIGHT_400 = 1<<7, + FONT_WEIGHT_500 = 1<<8, + FONT_WEIGHT_600 = 1<<9, + FONT_WEIGHT_700 = 1<<10, + FONT_WEIGHT_800 = 1<<11, + FONT_WEIGHT_900 = 1<<12, + FONT_WEIGHT_INHERIT = 1<<13, + NB_FONT_WEIGHTS +} ; + +enum CRFontStretch +{ + FONT_STRETCH_NORMAL=0, + FONT_STRETCH_WIDER, + FONT_STRETCH_NARROWER, + FONT_STRETCH_ULTRA_CONDENSED, + FONT_STRETCH_EXTRA_CONDENSED, + FONT_STRETCH_CONDENSED, + FONT_STRETCH_SEMI_CONDENSED, + FONT_STRETCH_SEMI_EXPANDED, + FONT_STRETCH_EXPANDED, + FONT_STRETCH_EXTRA_EXPANDED, + FONT_STRETCH_ULTRA_EXPANDED, + FONT_STRETCH_INHERIT +} ; + +/************************************** + *'font-family' manipulation functions + ***************************************/ +CRFontFamily * +cr_font_family_new (enum CRFontFamilyType a_type, guchar *a_name) ; + +CRFontFamily * +cr_font_family_append (CRFontFamily *a_this, + CRFontFamily *a_family_to_append) ; + +guchar * +cr_font_family_to_string (CRFontFamily const *a_this, + gboolean a_walk_font_family_list) ; + +CRFontFamily * +cr_font_family_prepend (CRFontFamily *a_this, + CRFontFamily *a_family_to_prepend); + +enum CRStatus +cr_font_family_destroy (CRFontFamily *a_this) ; + +enum CRStatus +cr_font_family_set_name (CRFontFamily *a_this, guchar *a_name) ; + + +/************************************ + *'font-size' manipulation functions + ***********************************/ + +CRFontSize * cr_font_size_new (void) ; + +enum CRStatus cr_font_size_clear (CRFontSize *a_this) ; + +enum CRStatus cr_font_size_copy (CRFontSize *a_dst, + CRFontSize const *a_src) ; +enum CRStatus cr_font_size_set_predefined_absolute_font_size (CRFontSize *a_this, + enum CRPredefinedAbsoluteFontSize a_predefined) ; +enum CRStatus cr_font_size_set_relative_font_size (CRFontSize *a_this, + enum CRRelativeFontSize a_relative) ; + +enum CRStatus cr_font_size_set_absolute_font_size (CRFontSize *a_this, + enum CRNumType a_num_type, + gdouble a_value) ; + +enum CRStatus cr_font_size_set_to_inherit (CRFontSize *a_this) ; + +gboolean cr_font_size_is_set_to_inherit (CRFontSize const *a_this) ; + +gchar* cr_font_size_to_string (CRFontSize const *a_this) ; + +void cr_font_size_destroy (CRFontSize *a_font_size) ; + +/******************************************************* + *'font-size-adjust' manipulation function declarations + *******************************************************/ + +CRFontSizeAdjust * cr_font_size_adjust_new (void) ; + +gchar * cr_font_size_adjust_to_string (CRFontSizeAdjust const *a_this) ; + +void cr_font_size_adjust_destroy (CRFontSizeAdjust *a_this) ; + +void +cr_font_size_get_smaller_predefined_font_size (enum CRPredefinedAbsoluteFontSize a_font_size, + enum CRPredefinedAbsoluteFontSize *a_smaller_size) ; +void +cr_font_size_get_larger_predefined_font_size (enum CRPredefinedAbsoluteFontSize a_font_size, + enum CRPredefinedAbsoluteFontSize *a_larger_size) ; + +gboolean +cr_font_size_is_predefined_absolute_font_size (enum CRPredefinedAbsoluteFontSize a_font_size) ; + +/*********************************** + *various other font related functions + ***********************************/ +const gchar * cr_font_style_to_string (enum CRFontStyle a_code) ; + +const gchar * cr_font_weight_to_string (enum CRFontWeight a_code) ; + +enum CRFontWeight +cr_font_weight_get_bolder (enum CRFontWeight a_weight) ; + +const gchar * cr_font_variant_to_string (enum CRFontVariant a_code) ; + +const gchar * cr_font_stretch_to_string (enum CRFontStretch a_code) ; + +G_END_DECLS + +#endif diff --git a/src/st/croco/cr-input.c b/src/st/croco/cr-input.c new file mode 100644 index 0000000..430e75e --- /dev/null +++ b/src/st/croco/cr-input.c @@ -0,0 +1,1191 @@ +/* -*- Mode: C; indent-tabs-mode: nil; c-basic-offset: 8-*- */ + +/* + * This file is part of The Croco Library + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of version 2.1 of the GNU Lesser General Public + * License as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 + * USA + * + * Author: Dodji Seketeli + * See COPYRIGHTS file for copyright information. + */ + +#include "stdio.h" +#include <string.h> +#include "cr-input.h" +#include "cr-enc-handler.h" + +/** + *@CRInput: + * + *The definition of the #CRInput class. + */ + +/******************* + *Private type defs + *******************/ + +/** + *The private attributes of + *the #CRInputPriv class. + */ +struct _CRInputPriv { + /* + *The input buffer + */ + guchar *in_buf; + gulong in_buf_size; + + gulong nb_bytes; + + /* + *The index of the next byte + *to be read. + */ + gulong next_byte_index; + + /* + *The current line number + */ + gulong line; + + /* + *The current col number + */ + gulong col; + + gboolean end_of_line; + gboolean end_of_input; + + /* + *the reference count of this + *instance. + */ + guint ref_count; + gboolean free_in_buf; +}; + +#define PRIVATE(object) (object)->priv + +/*************************** + *private constants + **************************/ +#define CR_INPUT_MEM_CHUNK_SIZE 1024 * 4 + +static CRInput *cr_input_new_real (void); + +static CRInput * +cr_input_new_real (void) +{ + CRInput *result = NULL; + + result = g_try_malloc (sizeof (CRInput)); + if (!result) { + cr_utils_trace_info ("Out of memory"); + return NULL; + } + memset (result, 0, sizeof (CRInput)); + + PRIVATE (result) = g_try_malloc (sizeof (CRInputPriv)); + if (!PRIVATE (result)) { + cr_utils_trace_info ("Out of memory"); + g_free (result); + return NULL; + } + memset (PRIVATE (result), 0, sizeof (CRInputPriv)); + PRIVATE (result)->free_in_buf = TRUE; + return result; +} + +/**************** + *Public methods + ***************/ + +/** + * cr_input_new_from_buf: + *@a_buf: the memory buffer to create the input stream from. + *The #CRInput keeps this pointer so user should not free it !. + *@a_len: the size of the input buffer. + *@a_enc: the buffer's encoding. + *@a_free_buf: if set to TRUE, this a_buf will be freed + *at the destruction of this instance. If set to false, it is up + *to the caller to free it. + * + *Creates a new input stream from a memory buffer. + *Returns the newly built instance of #CRInput. + */ +CRInput * +cr_input_new_from_buf (guchar * a_buf, + gulong a_len, + enum CREncoding a_enc, + gboolean a_free_buf) +{ + CRInput *result = NULL; + enum CRStatus status = CR_OK; + CREncHandler *enc_handler = NULL; + gulong len = a_len; + + g_return_val_if_fail (a_buf, NULL); + + result = cr_input_new_real (); + g_return_val_if_fail (result, NULL); + + /*transform the encoding in utf8 */ + if (a_enc != CR_UTF_8) { + enc_handler = cr_enc_handler_get_instance (a_enc); + if (!enc_handler) { + goto error; + } + + status = cr_enc_handler_convert_input + (enc_handler, a_buf, &len, + &PRIVATE (result)->in_buf, + &PRIVATE (result)->in_buf_size); + if (status != CR_OK) + goto error; + PRIVATE (result)->free_in_buf = TRUE; + if (a_free_buf == TRUE && a_buf) { + g_free (a_buf) ; + a_buf = NULL ; + } + PRIVATE (result)->nb_bytes = PRIVATE (result)->in_buf_size; + } else { + PRIVATE (result)->in_buf = (guchar *) a_buf; + PRIVATE (result)->in_buf_size = a_len; + PRIVATE (result)->nb_bytes = a_len; + PRIVATE (result)->free_in_buf = a_free_buf; + } + PRIVATE (result)->line = 1; + PRIVATE (result)->col = 0; + return result; + + error: + if (result) { + cr_input_destroy (result); + result = NULL; + } + + return NULL; +} + +/** + * cr_input_new_from_uri: + *@a_file_uri: the file to create *the input stream from. + *@a_enc: the encoding of the file *to create the input from. + * + *Creates a new input stream from + *a file. + * + *Returns the newly created input stream if + *this method could read the file and create it, + *NULL otherwise. + */ + +CRInput * +cr_input_new_from_uri (const gchar * a_file_uri, enum CREncoding a_enc) +{ + CRInput *result = NULL; + enum CRStatus status = CR_OK; + FILE *file_ptr = NULL; + guchar tmp_buf[CR_INPUT_MEM_CHUNK_SIZE] = { 0 }; + gulong nb_read = 0, + len = 0, + buf_size = 0; + gboolean loop = TRUE; + guchar *buf = NULL; + + g_return_val_if_fail (a_file_uri, NULL); + + file_ptr = fopen (a_file_uri, "r"); + + if (file_ptr == NULL) { + +#ifdef CR_DEBUG + cr_utils_trace_debug ("could not open file"); +#endif + g_warning ("Could not open file %s\n", a_file_uri); + + return NULL; + } + + /*load the file */ + while (loop) { + nb_read = fread (tmp_buf, 1 /*read bytes */ , + CR_INPUT_MEM_CHUNK_SIZE /*nb of bytes */ , + file_ptr); + + if (nb_read != CR_INPUT_MEM_CHUNK_SIZE) { + /*we read less chars than we wanted */ + if (feof (file_ptr)) { + /*we reached eof */ + loop = FALSE; + } else { + /*a pb occurred !! */ + cr_utils_trace_debug ("an io error occurred"); + status = CR_ERROR; + goto cleanup; + } + } + + if (status == CR_OK) { + /*read went well */ + buf = g_realloc (buf, len + CR_INPUT_MEM_CHUNK_SIZE); + memcpy (buf + len, tmp_buf, nb_read); + len += nb_read; + buf_size += CR_INPUT_MEM_CHUNK_SIZE; + } + } + + if (status == CR_OK) { + result = cr_input_new_from_buf (buf, len, a_enc, TRUE); + if (!result) { + goto cleanup; + } + /* + *we should free buf here because it's own by CRInput. + *(see the last parameter of cr_input_new_from_buf(). + */ + buf = NULL; + } + + cleanup: + if (file_ptr) { + fclose (file_ptr); + file_ptr = NULL; + } + + if (buf) { + g_free (buf); + buf = NULL; + } + + return result; +} + +/** + * cr_input_destroy: + *@a_this: the current instance of #CRInput. + * + *The destructor of the #CRInput class. + */ +void +cr_input_destroy (CRInput * a_this) +{ + if (a_this == NULL) + return; + + if (PRIVATE (a_this)) { + if (PRIVATE (a_this)->in_buf && PRIVATE (a_this)->free_in_buf) { + g_free (PRIVATE (a_this)->in_buf); + PRIVATE (a_this)->in_buf = NULL; + } + + g_free (PRIVATE (a_this)); + PRIVATE (a_this) = NULL; + } + + g_free (a_this); +} + +/** + * cr_input_ref: + *@a_this: the current instance of #CRInput. + * + *Increments the reference count of the current + *instance of #CRInput. + */ +void +cr_input_ref (CRInput * a_this) +{ + g_return_if_fail (a_this && PRIVATE (a_this)); + + PRIVATE (a_this)->ref_count++; +} + +/** + * cr_input_unref: + *@a_this: the current instance of #CRInput. + * + *Decrements the reference count of this instance + *of #CRInput. If the reference count goes down to + *zero, this instance is destroyed. + * + * Returns TRUE if the instance of #CRInput got destroyed, false otherwise. + */ +gboolean +cr_input_unref (CRInput * a_this) +{ + g_return_val_if_fail (a_this && PRIVATE (a_this), FALSE); + + if (PRIVATE (a_this)->ref_count) { + PRIVATE (a_this)->ref_count--; + } + + if (PRIVATE (a_this)->ref_count == 0) { + cr_input_destroy (a_this); + return TRUE; + } + return FALSE; +} + +/** + * cr_input_end_of_input: + *@a_this: the current instance of #CRInput. + *@a_end_of_input: out parameter. Is set to TRUE if + *the current instance has reached the end of its input buffer, + *FALSE otherwise. + * + *Tests whether the current instance of + *#CRInput has reached its input buffer. + * + * Returns CR_OK upon successful completion, an error code otherwise. + * Note that all the out parameters of this method are valid if + * and only if this method returns CR_OK. + */ +enum CRStatus +cr_input_end_of_input (CRInput const * a_this, gboolean * a_end_of_input) +{ + g_return_val_if_fail (a_this && PRIVATE (a_this) + && a_end_of_input, CR_BAD_PARAM_ERROR); + + *a_end_of_input = (PRIVATE (a_this)->next_byte_index + >= PRIVATE (a_this)->in_buf_size) ? TRUE : FALSE; + + return CR_OK; +} + +/** + * cr_input_get_nb_bytes_left: + *@a_this: the current instance of #CRInput. + * + *Returns the number of bytes left in the input stream + *before the end, -1 in case of error. + */ +glong +cr_input_get_nb_bytes_left (CRInput const * a_this) +{ + g_return_val_if_fail (a_this && PRIVATE (a_this), -1); + g_return_val_if_fail (PRIVATE (a_this)->nb_bytes + <= PRIVATE (a_this)->in_buf_size, -1); + g_return_val_if_fail (PRIVATE (a_this)->next_byte_index + <= PRIVATE (a_this)->nb_bytes, -1); + + if (PRIVATE (a_this)->end_of_input) + return 0; + + return PRIVATE (a_this)->nb_bytes - PRIVATE (a_this)->next_byte_index; +} + +/** + * cr_input_read_byte: + *@a_this: the current instance of #CRInput. + *@a_byte: out parameter the returned byte. + * + *Gets the next byte of the input. + *Updates the state of the input so that + *the next invocation of this method returns + *the next coming byte. + * + *Returns CR_OK upon successful completion, an error code + *otherwise. All the out parameters of this method are valid if + *and only if this method returns CR_OK. + */ +enum CRStatus +cr_input_read_byte (CRInput * a_this, guchar * a_byte) +{ + gulong nb_bytes_left = 0; + + g_return_val_if_fail (a_this && PRIVATE (a_this) + && a_byte, CR_BAD_PARAM_ERROR); + + g_return_val_if_fail (PRIVATE (a_this)->next_byte_index <= + PRIVATE (a_this)->nb_bytes, CR_BAD_PARAM_ERROR); + + if (PRIVATE (a_this)->end_of_input == TRUE) + return CR_END_OF_INPUT_ERROR; + + nb_bytes_left = cr_input_get_nb_bytes_left (a_this); + + if (nb_bytes_left < 1) { + return CR_END_OF_INPUT_ERROR; + } + + *a_byte = PRIVATE (a_this)->in_buf[PRIVATE (a_this)->next_byte_index]; + + if (PRIVATE (a_this)->nb_bytes - + PRIVATE (a_this)->next_byte_index < 2) { + PRIVATE (a_this)->end_of_input = TRUE; + } else { + PRIVATE (a_this)->next_byte_index++; + } + + return CR_OK; +} + +/** + * cr_input_read_char: + *@a_this: the current instance of CRInput. + *@a_char: out parameter. The read character. + * + *Reads an unicode character from the current instance of + *#CRInput. + * + *Returns CR_OK upon successful completion, an error code + *otherwise. + */ +enum CRStatus +cr_input_read_char (CRInput * a_this, guint32 * a_char) +{ + enum CRStatus status = CR_OK; + gulong consumed = 0, + nb_bytes_left = 0; + + g_return_val_if_fail (a_this && PRIVATE (a_this) && a_char, + CR_BAD_PARAM_ERROR); + + if (PRIVATE (a_this)->end_of_input == TRUE) + return CR_END_OF_INPUT_ERROR; + + nb_bytes_left = cr_input_get_nb_bytes_left (a_this); + + if (nb_bytes_left < 1) { + return CR_END_OF_INPUT_ERROR; + } + + status = cr_utils_read_char_from_utf8_buf + (PRIVATE (a_this)->in_buf + + + PRIVATE (a_this)->next_byte_index, + nb_bytes_left, a_char, &consumed); + + if (status == CR_OK) { + /*update next byte index */ + PRIVATE (a_this)->next_byte_index += consumed; + + /*update line and column number */ + if (PRIVATE (a_this)->end_of_line == TRUE) { + PRIVATE (a_this)->col = 1; + PRIVATE (a_this)->line++; + PRIVATE (a_this)->end_of_line = FALSE; + } else if (*a_char != '\n') { + PRIVATE (a_this)->col++; + } + + if (*a_char == '\n') { + PRIVATE (a_this)->end_of_line = TRUE; + } + } + + return status; +} + +/** + * cr_input_set_line_num: + *@a_this: the "this pointer" of the current instance of #CRInput. + *@a_line_num: the new line number. + * + *Setter of the current line number. + * + *Return CR_OK upon successful completion, an error code otherwise. + */ +enum CRStatus +cr_input_set_line_num (CRInput * a_this, glong a_line_num) +{ + g_return_val_if_fail (a_this && PRIVATE (a_this), CR_BAD_PARAM_ERROR); + + PRIVATE (a_this)->line = a_line_num; + + return CR_OK; +} + +/** + * cr_input_get_line_num: + *@a_this: the "this pointer" of the current instance of #CRInput. + *@a_line_num: the returned line number. + * + *Getter of the current line number. + * + *Returns CR_OK upon successful completion, an error code otherwise. + */ +enum CRStatus +cr_input_get_line_num (CRInput const * a_this, glong * a_line_num) +{ + g_return_val_if_fail (a_this && PRIVATE (a_this) + && a_line_num, CR_BAD_PARAM_ERROR); + + *a_line_num = PRIVATE (a_this)->line; + + return CR_OK; +} + +/** + * cr_input_set_column_num: + *@a_this: the "this pointer" of the current instance of #CRInput. + *@a_col: the new column number. + * + *Setter of the current column number. + * + *Returns CR_OK upon successful completion, an error code otherwise. + */ +enum CRStatus +cr_input_set_column_num (CRInput * a_this, glong a_col) +{ + g_return_val_if_fail (a_this && PRIVATE (a_this), CR_BAD_PARAM_ERROR); + + PRIVATE (a_this)->col = a_col; + + return CR_OK; +} + +/** + * cr_input_get_column_num: + *@a_this: the "this pointer" of the current instance of #CRInput. + *@a_col: out parameter + * + *Getter of the current column number. + * + *Returns CR_OK upon successful completion, an error code otherwise. + */ +enum CRStatus +cr_input_get_column_num (CRInput const * a_this, glong * a_col) +{ + g_return_val_if_fail (a_this && PRIVATE (a_this) && a_col, + CR_BAD_PARAM_ERROR); + + *a_col = PRIVATE (a_this)->col; + + return CR_OK; +} + +/** + * cr_input_increment_line_num: + *@a_this: the "this pointer" of the current instance of #CRInput. + *@a_increment: the increment to add to the line number. + * + *Increments the current line number. + * + *Returns CR_OK upon successful completion, an error code otherwise. + */ +enum CRStatus +cr_input_increment_line_num (CRInput * a_this, glong a_increment) +{ + g_return_val_if_fail (a_this && PRIVATE (a_this), CR_BAD_PARAM_ERROR); + + PRIVATE (a_this)->line += a_increment; + + return CR_OK; +} + +/** + * cr_input_increment_col_num: + *@a_this: the "this pointer" of the current instance of #CRInput. + *@a_increment: the increment to add to the column number. + * + *Increments the current column number. + * + *Returns CR_OK upon successful completion, an error code otherwise. + */ +enum CRStatus +cr_input_increment_col_num (CRInput * a_this, glong a_increment) +{ + g_return_val_if_fail (a_this && PRIVATE (a_this), CR_BAD_PARAM_ERROR); + + PRIVATE (a_this)->col += a_increment; + + return CR_OK; +} + +/** + * cr_input_consume_char: + *@a_this: the this pointer. + *@a_char: the character to consume. If set to zero, + *consumes any character. + * + *Consumes the next character of the input stream if + *and only if that character equals a_char. + * + *Returns CR_OK upon successful completion, CR_PARSING_ERROR if + *next char is different from a_char, an other error code otherwise + */ +enum CRStatus +cr_input_consume_char (CRInput * a_this, guint32 a_char) +{ + guint32 c; + enum CRStatus status; + + g_return_val_if_fail (a_this && PRIVATE (a_this), CR_BAD_PARAM_ERROR); + + if ((status = cr_input_peek_char (a_this, &c)) != CR_OK) { + return status; + } + + if (c == a_char || a_char == 0) { + status = cr_input_read_char (a_this, &c); + } else { + return CR_PARSING_ERROR; + } + + return status; +} + +/** + * cr_input_consume_chars: + *@a_this: the this pointer of the current instance of #CRInput. + *@a_char: the character to consume. + *@a_nb_char: in/out parameter. The number of characters to consume. + *If set to a negative value, the function will consume all the occurrences + *of a_char found. + *After return, if the return value equals CR_OK, this variable contains + *the number of characters actually consumed. + * + *Consumes up to a_nb_char occurrences of the next contiguous characters + *which equal a_char. Note that the next character of the input stream + **MUST* equal a_char to trigger the consumption, or else, the error + *code CR_PARSING_ERROR is returned. + *If the number of contiguous characters that equals a_char is less than + *a_nb_char, then this function consumes all the characters it can consume. + * + *Returns CR_OK if at least one character has been consumed, an error code + *otherwise. + */ +enum CRStatus +cr_input_consume_chars (CRInput * a_this, guint32 a_char, gulong * a_nb_char) +{ + enum CRStatus status = CR_OK; + gulong nb_consumed = 0; + + g_return_val_if_fail (a_this && PRIVATE (a_this) && a_nb_char, + CR_BAD_PARAM_ERROR); + + g_return_val_if_fail (a_char != 0 || a_nb_char != NULL, + CR_BAD_PARAM_ERROR); + + for (nb_consumed = 0; ((status == CR_OK) + && (*a_nb_char > 0 + && nb_consumed < *a_nb_char)); + nb_consumed++) { + status = cr_input_consume_char (a_this, a_char); + } + + *a_nb_char = nb_consumed; + + if ((nb_consumed > 0) + && ((status == CR_PARSING_ERROR) + || (status == CR_END_OF_INPUT_ERROR))) { + status = CR_OK; + } + + return status; +} + +/** + * cr_input_consume_white_spaces: + *@a_this: the "this pointer" of the current instance of #CRInput. + *@a_nb_chars: in/out parameter. The number of white spaces to + *consume. After return, holds the number of white spaces actually consumed. + * + *Same as cr_input_consume_chars() but this one consumes white + *spaces. + * + *Returns CR_OK upon successful completion, an error code otherwise. + */ +enum CRStatus +cr_input_consume_white_spaces (CRInput * a_this, gulong * a_nb_chars) +{ + enum CRStatus status = CR_OK; + guint32 cur_char = 0, + nb_consumed = 0; + + g_return_val_if_fail (a_this && PRIVATE (a_this) && a_nb_chars, + CR_BAD_PARAM_ERROR); + + for (nb_consumed = 0; + ((*a_nb_chars > 0) && (nb_consumed < *a_nb_chars)); + nb_consumed++) { + status = cr_input_peek_char (a_this, &cur_char); + if (status != CR_OK) + break; + + /*if the next char is a white space, consume it ! */ + if (cr_utils_is_white_space (cur_char) == TRUE) { + status = cr_input_read_char (a_this, &cur_char); + if (status != CR_OK) + break; + continue; + } + + break; + + } + + *a_nb_chars = (gulong) nb_consumed; + + if (nb_consumed && status == CR_END_OF_INPUT_ERROR) { + status = CR_OK; + } + + return status; +} + +/** + * cr_input_peek_char: + *@a_this: the current instance of #CRInput. + *@a_char: out parameter. The returned character. + * + *Same as cr_input_read_char() but does not update the + *internal state of the input stream. The next call + *to cr_input_peek_char() or cr_input_read_char() will thus + *return the same character as the current one. + * + *Returns CR_OK upon successful completion, an error code + *otherwise. + */ +enum CRStatus +cr_input_peek_char (CRInput const * a_this, guint32 * a_char) +{ + enum CRStatus status = CR_OK; + gulong consumed = 0, + nb_bytes_left = 0; + + g_return_val_if_fail (a_this && PRIVATE (a_this) + && a_char, CR_BAD_PARAM_ERROR); + + if (PRIVATE (a_this)->next_byte_index >= + PRIVATE (a_this)->in_buf_size) { + return CR_END_OF_INPUT_ERROR; + } + + nb_bytes_left = cr_input_get_nb_bytes_left (a_this); + + if (nb_bytes_left < 1) { + return CR_END_OF_INPUT_ERROR; + } + + status = cr_utils_read_char_from_utf8_buf + (PRIVATE (a_this)->in_buf + + PRIVATE (a_this)->next_byte_index, + nb_bytes_left, a_char, &consumed); + + return status; +} + +/** + * cr_input_peek_byte: + *@a_this: the current instance of #CRInput. + *@a_origin: the origin to consider in the calculation + *of the position of the byte to peek. + *@a_offset: the offset of the byte to peek, starting from + *the origin specified by a_origin. + *@a_byte: out parameter the peeked byte. + * + *Gets a byte from the input stream, + *starting from the current position in the input stream. + *Unlike cr_input_peek_next_byte() this method + *does not update the state of the current input stream. + *Subsequent calls to cr_input_peek_byte with the same arguments + *will return the same byte. + * + *Returns CR_OK upon successful completion or, + *CR_BAD_PARAM_ERROR if at least one of the parameters is invalid; + *CR_OUT_OF_BOUNDS_ERROR if the indexed byte is out of bounds. + */ +enum CRStatus +cr_input_peek_byte (CRInput const * a_this, enum CRSeekPos a_origin, + gulong a_offset, guchar * a_byte) +{ + gulong abs_offset = 0; + + g_return_val_if_fail (a_this && PRIVATE (a_this) + && a_byte, CR_BAD_PARAM_ERROR); + + switch (a_origin) { + + case CR_SEEK_CUR: + abs_offset = PRIVATE (a_this)->next_byte_index - 1 + a_offset; + break; + + case CR_SEEK_BEGIN: + abs_offset = a_offset; + break; + + case CR_SEEK_END: + abs_offset = PRIVATE (a_this)->in_buf_size - 1 - a_offset; + break; + + default: + return CR_BAD_PARAM_ERROR; + } + + if (abs_offset < PRIVATE (a_this)->in_buf_size) { + + *a_byte = PRIVATE (a_this)->in_buf[abs_offset]; + + return CR_OK; + + } else { + return CR_END_OF_INPUT_ERROR; + } +} + +/** + * cr_input_peek_byte2: + *@a_this: the current byte input stream. + *@a_offset: the offset of the byte to peek, starting + *from the current input position pointer. + *@a_eof: out parameter. Is set to true is we reach end of + *stream. If set to NULL by the caller, this parameter is not taken + *in account. + * + *Same as cr_input_peek_byte() but with a simplified + *interface. + * + *Returns the read byte or 0 if something bad happened. + */ +guchar +cr_input_peek_byte2 (CRInput const * a_this, gulong a_offset, gboolean * a_eof) +{ + guchar result = 0; + enum CRStatus status = CR_ERROR; + + g_return_val_if_fail (a_this && PRIVATE (a_this), 0); + + if (a_eof) + *a_eof = FALSE; + + status = cr_input_peek_byte (a_this, CR_SEEK_CUR, a_offset, &result); + + if ((status == CR_END_OF_INPUT_ERROR) + && a_eof) + *a_eof = TRUE; + + return result; +} + +/** + * cr_input_get_byte_addr: + *@a_this: the current instance of #CRInput. + *@a_offset: the offset of the byte in the input stream starting + *from the beginning of the stream. + * + *Gets the memory address of the byte located at a given offset + *in the input stream. + * + *Returns the address, otherwise NULL if an error occurred. + */ +guchar * +cr_input_get_byte_addr (CRInput * a_this, gulong a_offset) +{ + g_return_val_if_fail (a_this && PRIVATE (a_this), NULL); + + if (a_offset >= PRIVATE (a_this)->nb_bytes) { + return NULL; + } + + return &PRIVATE (a_this)->in_buf[a_offset]; +} + +/** + * cr_input_get_cur_byte_addr: + *@a_this: the current input stream + *@a_offset: out parameter. The returned address. + * + *Gets the address of the current character pointer. + * + *Returns CR_OK upon successful completion, an error code otherwise. + */ +enum CRStatus +cr_input_get_cur_byte_addr (CRInput * a_this, guchar ** a_offset) +{ + g_return_val_if_fail (a_this && PRIVATE (a_this) && a_offset, + CR_BAD_PARAM_ERROR); + + if (!PRIVATE (a_this)->next_byte_index) { + return CR_START_OF_INPUT_ERROR; + } + + *a_offset = cr_input_get_byte_addr + (a_this, PRIVATE (a_this)->next_byte_index - 1); + + return CR_OK; +} + +/** + * cr_input_seek_index: + *@a_this: the current instance of #CRInput. + *@a_origin: the origin to consider during the calculation + *of the absolute position of the new "current byte index". + *@a_pos: the relative offset of the new "current byte index." + *This offset is relative to the origin a_origin. + * + *Sets the "current byte index" of the current instance + *of #CRInput. Next call to cr_input_get_byte() will return + *the byte next after the new "current byte index". + * + *Returns CR_OK upon successful completion otherwise returns + *CR_BAD_PARAM_ERROR if at least one of the parameters is not valid + *or CR_OUT_BOUNDS_ERROR in case of error. + */ +enum CRStatus +cr_input_seek_index (CRInput * a_this, enum CRSeekPos a_origin, gint a_pos) +{ + + glong abs_offset = 0; + + g_return_val_if_fail (a_this && PRIVATE (a_this), CR_BAD_PARAM_ERROR); + + switch (a_origin) { + + case CR_SEEK_CUR: + abs_offset = PRIVATE (a_this)->next_byte_index - 1 + a_pos; + break; + + case CR_SEEK_BEGIN: + abs_offset = a_pos; + break; + + case CR_SEEK_END: + abs_offset = PRIVATE (a_this)->in_buf_size - 1 - a_pos; + break; + + default: + return CR_BAD_PARAM_ERROR; + } + + if ((abs_offset > 0) + && (gulong) abs_offset < PRIVATE (a_this)->nb_bytes) { + + /*update the input stream's internal state */ + PRIVATE (a_this)->next_byte_index = abs_offset + 1; + + return CR_OK; + } + + return CR_OUT_OF_BOUNDS_ERROR; +} + +/** + * cr_input_get_cur_pos: + *@a_this: the current instance of #CRInput. + *@a_pos: out parameter. The returned position. + * + *Gets the position of the "current byte index" which + *is basically the position of the last returned byte in the + *input stream. + * + *Returns CR_OK upon successful completion. Otherwise, + *CR_BAD_PARAMETER_ERROR if at least one of the arguments is invalid. + *CR_START_OF_INPUT if no call to either cr_input_read_byte() + *or cr_input_seek_index() have been issued before calling + *cr_input_get_cur_pos() + *Note that the out parameters of this function are valid if and only if this + *function returns CR_OK. + */ +enum CRStatus +cr_input_get_cur_pos (CRInput const * a_this, CRInputPos * a_pos) +{ + g_return_val_if_fail (a_this && PRIVATE (a_this) && a_pos, + CR_BAD_PARAM_ERROR); + + a_pos->next_byte_index = PRIVATE (a_this)->next_byte_index; + a_pos->line = PRIVATE (a_this)->line; + a_pos->col = PRIVATE (a_this)->col; + a_pos->end_of_line = PRIVATE (a_this)->end_of_line; + a_pos->end_of_file = PRIVATE (a_this)->end_of_input; + + return CR_OK; +} + +/** + * cr_input_get_parsing_location: + *@a_this: the current instance of #CRInput + *@a_loc: the set parsing location. + * + *Gets the current parsing location. + *The Parsing location is a public datastructure that + *represents the current line/column/byte offset/ in the input + *stream. + * + *Returns CR_OK upon successful completion, an error + *code otherwise. + */ +enum CRStatus +cr_input_get_parsing_location (CRInput const *a_this, + CRParsingLocation *a_loc) +{ + g_return_val_if_fail (a_this + && PRIVATE (a_this) + && a_loc, + CR_BAD_PARAM_ERROR) ; + + a_loc->line = PRIVATE (a_this)->line ; + a_loc->column = PRIVATE (a_this)->col ; + if (PRIVATE (a_this)->next_byte_index) { + a_loc->byte_offset = PRIVATE (a_this)->next_byte_index - 1 ; + } else { + a_loc->byte_offset = PRIVATE (a_this)->next_byte_index ; + } + return CR_OK ; +} + +/** + * cr_input_get_cur_index: + *@a_this: the "this pointer" of the current instance of + *#CRInput + *@a_index: out parameter. The returned index. + * + *Getter of the next byte index. + *It actually returns the index of the + *next byte to be read. + * + *Returns CR_OK upon successful completion, an error code + *otherwise. + */ +enum CRStatus +cr_input_get_cur_index (CRInput const * a_this, glong * a_index) +{ + g_return_val_if_fail (a_this && PRIVATE (a_this) + && a_index, CR_BAD_PARAM_ERROR); + + *a_index = PRIVATE (a_this)->next_byte_index; + + return CR_OK; +} + +/** + * cr_input_set_cur_index: + *@a_this: the "this pointer" of the current instance + *of #CRInput . + *@a_index: the new index to set. + * + *Setter of the next byte index. + *It sets the index of the next byte to be read. + * + *Returns CR_OK upon successful completion, an error code otherwise. + */ +enum CRStatus +cr_input_set_cur_index (CRInput * a_this, glong a_index) +{ + g_return_val_if_fail (a_this && PRIVATE (a_this), CR_BAD_PARAM_ERROR); + + PRIVATE (a_this)->next_byte_index = a_index; + + return CR_OK; +} + +/** + * cr_input_set_end_of_file: + *@a_this: the current instance of #CRInput. + *@a_eof: the new end of file flag. + * + *Sets the end of file flag. + * + *Returns CR_OK upon successful completion, an error code otherwise. + */ +enum CRStatus +cr_input_set_end_of_file (CRInput * a_this, gboolean a_eof) +{ + g_return_val_if_fail (a_this && PRIVATE (a_this), CR_BAD_PARAM_ERROR); + + PRIVATE (a_this)->end_of_input = a_eof; + + return CR_OK; +} + +/** + * cr_input_get_end_of_file: + *@a_this: the current instance of #CRInput. + *@a_eof: out parameter the place to put the end of + *file flag. + * + *Gets the end of file flag. + * + *Returns CR_OK upon successful completion, an error code otherwise. + */ +enum CRStatus +cr_input_get_end_of_file (CRInput const * a_this, gboolean * a_eof) +{ + g_return_val_if_fail (a_this && PRIVATE (a_this) + && a_eof, CR_BAD_PARAM_ERROR); + + *a_eof = PRIVATE (a_this)->end_of_input; + + return CR_OK; +} + +/** + * cr_input_set_end_of_line: + *@a_this: the current instance of #CRInput. + *@a_eol: the new end of line flag. + * + *Sets the end of line flag. + * + *Returns CR_OK upon successful completion, an error code + *otherwise. + */ +enum CRStatus +cr_input_set_end_of_line (CRInput * a_this, gboolean a_eol) +{ + g_return_val_if_fail (a_this && PRIVATE (a_this), CR_BAD_PARAM_ERROR); + + PRIVATE (a_this)->end_of_line = a_eol; + + return CR_OK; +} + +/** + * cr_input_get_end_of_line: + *@a_this: the current instance of #CRInput + *@a_eol: out parameter. The place to put + *the returned flag + * + *Gets the end of line flag of the current input. + * + *Returns CR_OK upon successful completion, an error code + *otherwise. + */ +enum CRStatus +cr_input_get_end_of_line (CRInput const * a_this, gboolean * a_eol) +{ + g_return_val_if_fail (a_this && PRIVATE (a_this) + && a_eol, CR_BAD_PARAM_ERROR); + + *a_eol = PRIVATE (a_this)->end_of_line; + + return CR_OK; +} + +/** + * cr_input_set_cur_pos: + *@a_this: the "this pointer" of the current instance of + *#CRInput. + *@a_pos: the new position. + * + *Sets the current position in the input stream. + * + * Returns CR_OK upon successful completion, an error code otherwise. + */ +enum CRStatus +cr_input_set_cur_pos (CRInput * a_this, CRInputPos const * a_pos) +{ + g_return_val_if_fail (a_this && PRIVATE (a_this) && a_pos, + CR_BAD_PARAM_ERROR); + + cr_input_set_column_num (a_this, a_pos->col); + cr_input_set_line_num (a_this, a_pos->line); + cr_input_set_cur_index (a_this, a_pos->next_byte_index); + cr_input_set_end_of_line (a_this, a_pos->end_of_line); + cr_input_set_end_of_file (a_this, a_pos->end_of_file); + + return CR_OK; +} diff --git a/src/st/croco/cr-input.h b/src/st/croco/cr-input.h new file mode 100644 index 0000000..9eb402a --- /dev/null +++ b/src/st/croco/cr-input.h @@ -0,0 +1,174 @@ +/* -*- Mode: C; indent-tabs-mode:nil; c-basic-offset:8 -*- */ + +/* + * This file is part of The Croco Library + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of version 2.1 of the GNU Lesser General Public + * License as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 + * USA + * + * Author: Dodji Seketeli + * See the COPYRIGHTS file for copyrights information. + */ + +#ifndef __CR_INPUT_SRC_H__ +#define __CR_INPUT_SRC_H__ + + +#include <glib.h> +#include "cr-utils.h" +#include "cr-parsing-location.h" + +G_BEGIN_DECLS + +/** + *@file + *The libcroco basic input stream class + *declaration file. + */ + +typedef struct _CRInput CRInput ; +typedef struct _CRInputPriv CRInputPriv ; + +/** + *The #CRInput class provides the abstraction of + *an utf8-encoded character stream. + */ +struct _CRInput +{ + CRInputPriv *priv ; +} ; + +typedef struct _CRInputPos CRInputPos ; + +struct _CRInputPos +{ + glong line ; + glong col ; + gboolean end_of_file ; + gboolean end_of_line ; + glong next_byte_index ; +} ; + +CRInput * +cr_input_new_from_buf (guchar *a_buf, gulong a_len, + enum CREncoding a_enc, gboolean a_free_buf) ; +CRInput * +cr_input_new_from_uri (const gchar *a_file_uri, + enum CREncoding a_enc) ; + +void +cr_input_destroy (CRInput *a_this) ; + +void +cr_input_ref (CRInput *a_this) ; + +gboolean +cr_input_unref (CRInput *a_this) ; + +enum CRStatus +cr_input_read_byte (CRInput *a_this, guchar *a_byte) ; + +enum CRStatus +cr_input_read_char (CRInput *a_this, guint32 *a_char) ; + +enum CRStatus +cr_input_consume_chars (CRInput *a_this, guint32 a_char, + gulong *a_nb_char) ; + +enum CRStatus +cr_input_consume_char (CRInput *a_this, guint32 a_char) ; + +enum CRStatus +cr_input_consume_white_spaces (CRInput *a_this, gulong *a_nb_chars) ; + +enum CRStatus +cr_input_peek_byte (CRInput const *a_this, enum CRSeekPos a_origin, + gulong a_offset, guchar *a_byte) ; + +guchar +cr_input_peek_byte2 (CRInput const *a_this, gulong a_offset, + gboolean *a_eof) ; + +enum CRStatus +cr_input_peek_char (CRInput const *a_this, guint32 *a_char) ; + +guchar * +cr_input_get_byte_addr (CRInput *a_this, + gulong a_offset) ; + +enum CRStatus +cr_input_get_cur_byte_addr (CRInput *a_this, guchar ** a_offset) ; + +enum CRStatus +cr_input_seek_index (CRInput *a_this, + enum CRSeekPos a_origin, gint a_pos) ; + +enum CRStatus +cr_input_get_cur_index (CRInput const *a_this, glong *a_index) ; + +enum CRStatus +cr_input_set_cur_index (CRInput *a_this, glong a_index) ; + +enum CRStatus +cr_input_get_cur_pos (CRInput const *a_this, CRInputPos * a_pos) ; + +enum CRStatus +cr_input_set_cur_pos (CRInput *a_this, CRInputPos const *a_pos) ; + +enum CRStatus +cr_input_get_parsing_location (CRInput const *a_this, + CRParsingLocation *a_loc) ; + +enum CRStatus +cr_input_get_end_of_line (CRInput const *a_this, gboolean *a_eol) ; + +enum CRStatus +cr_input_set_end_of_line (CRInput *a_this, gboolean a_eol) ; + +enum CRStatus +cr_input_get_end_of_file (CRInput const *a_this, gboolean *a_eof) ; + +enum CRStatus +cr_input_set_end_of_file (CRInput *a_this, gboolean a_eof) ; + +enum CRStatus +cr_input_set_line_num (CRInput *a_this, glong a_line_num) ; + +enum CRStatus +cr_input_get_line_num (CRInput const *a_this, glong *a_line_num) ; + +enum CRStatus +cr_input_set_column_num (CRInput *a_this, glong a_col) ; + +enum CRStatus +cr_input_get_column_num (CRInput const *a_this, glong *a_col) ; + +enum CRStatus +cr_input_increment_line_num (CRInput *a_this, + glong a_increment) ; + +enum CRStatus +cr_input_increment_col_num (CRInput *a_this, + glong a_increment) ; + +glong +cr_input_get_nb_bytes_left (CRInput const *a_this) ; + +enum CRStatus +cr_input_end_of_input (CRInput const *a_this, gboolean *a_end_of_input) ; + +G_END_DECLS + +#endif /*__CR_INPUT_SRC_H__*/ + diff --git a/src/st/croco/cr-num.c b/src/st/croco/cr-num.c new file mode 100644 index 0000000..ba17285 --- /dev/null +++ b/src/st/croco/cr-num.c @@ -0,0 +1,313 @@ +/* -*- Mode: C; indent-tabs-mode:nil; c-basic-offset: 8-*- */ + +/* + * This file is part of The Croco Library + * + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of version 2.1 of the GNU Lesser General Public + * License as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 + * USA + * + * Author: Dodji Seketeli + * See COPYRIGHTS file for copyrights information. + */ + +/** + *@CRNum: + * + *The definition + *of the #CRNum class. + */ + +#include "cr-num.h" +#include "string.h" + +/** + * cr_num_new: + * + *#CRNum. + * + *Returns the newly built instance of + *#CRNum. + */ +CRNum * +cr_num_new (void) +{ + CRNum *result = NULL; + + result = g_try_malloc (sizeof (CRNum)); + + if (result == NULL) { + cr_utils_trace_info ("Out of memory"); + return NULL; + } + + memset (result, 0, sizeof (CRNum)); + + return result; +} + +/** + * cr_num_new_with_val: + * @a_val: the numerical value of the number. + * @a_type: the type of number. + * + * A constructor of #CRNum. + * + * Returns the newly built instance of #CRNum or + * NULL if an error arises. + */ +CRNum * +cr_num_new_with_val (gdouble a_val, enum CRNumType a_type) +{ + CRNum *result = NULL; + + result = cr_num_new (); + + g_return_val_if_fail (result, NULL); + + result->val = a_val; + result->type = a_type; + + return result; +} + +/** + * cr_num_to_string: + *@a_this: the current instance of #CRNum. + * + *Returns the newly built string representation + *of the current instance of #CRNum. The returned + *string is NULL terminated. The caller *must* + *free the returned string. + */ +guchar * +cr_num_to_string (CRNum const * a_this) +{ + gdouble test_val = 0.0; + + guchar *tmp_char1 = NULL, + *tmp_char2 = NULL, + *result = NULL; + + g_return_val_if_fail (a_this, NULL); + + test_val = a_this->val - (glong) a_this->val; + + if (!test_val) { + tmp_char1 = (guchar *) g_strdup_printf ("%ld", (glong) a_this->val); + } else { + tmp_char1 = (guchar *) g_new0 (char, G_ASCII_DTOSTR_BUF_SIZE + 1); + if (tmp_char1 != NULL) + g_ascii_dtostr ((gchar *) tmp_char1, G_ASCII_DTOSTR_BUF_SIZE, a_this->val); + } + + g_return_val_if_fail (tmp_char1, NULL); + + switch (a_this->type) { + case NUM_LENGTH_EM: + tmp_char2 = (guchar *) "em"; + break; + + case NUM_LENGTH_EX: + tmp_char2 = (guchar *) "ex"; + break; + + case NUM_LENGTH_PX: + tmp_char2 = (guchar *) "px"; + break; + + case NUM_LENGTH_IN: + tmp_char2 = (guchar *) "in"; + break; + + case NUM_LENGTH_CM: + tmp_char2 = (guchar *) "cm"; + break; + + case NUM_LENGTH_MM: + tmp_char2 = (guchar *) "mm"; + break; + + case NUM_LENGTH_PT: + tmp_char2 = (guchar *) "pt"; + break; + + case NUM_LENGTH_PC: + tmp_char2 = (guchar *) "pc"; + break; + + case NUM_ANGLE_DEG: + tmp_char2 = (guchar *) "deg"; + break; + + case NUM_ANGLE_RAD: + tmp_char2 = (guchar *) "rad"; + break; + + case NUM_ANGLE_GRAD: + tmp_char2 = (guchar *) "grad"; + break; + + case NUM_TIME_MS: + tmp_char2 = (guchar *) "ms"; + break; + + case NUM_TIME_S: + tmp_char2 = (guchar *) "s"; + break; + + case NUM_FREQ_HZ: + tmp_char2 = (guchar *) "Hz"; + break; + + case NUM_FREQ_KHZ: + tmp_char2 = (guchar *) "KHz"; + break; + + case NUM_PERCENTAGE: + tmp_char2 = (guchar *) "%"; + break; + case NUM_INHERIT: + tmp_char2 = (guchar *) "inherit"; + break ; + case NUM_AUTO: + tmp_char2 = (guchar *) "auto"; + break ; + case NUM_GENERIC: + tmp_char2 = NULL ; + break ; + default: + tmp_char2 = (guchar *) "unknown"; + break; + } + + if (tmp_char2) { + result = (guchar *) g_strconcat ((gchar *) tmp_char1, tmp_char2, NULL); + g_free (tmp_char1); + } else { + result = tmp_char1; + } + + return result; +} + +/** + * cr_num_copy: + *@a_src: the instance of #CRNum to copy. + *Must be non NULL. + *@a_dest: the destination of the copy. + *Must be non NULL + * + *Copies an instance of #CRNum. + * + *Returns CR_OK upon successful completion, an + *error code otherwise. + */ +enum CRStatus +cr_num_copy (CRNum * a_dest, CRNum const * a_src) +{ + g_return_val_if_fail (a_dest && a_src, CR_BAD_PARAM_ERROR); + + memcpy (a_dest, a_src, sizeof (CRNum)); + + return CR_OK; +} + +/** + * cr_num_dup: + *@a_this: the instance of #CRNum to duplicate. + * + *Duplicates an instance of #CRNum + * + *Returns the newly created (duplicated) instance of #CRNum. + *Must be freed by cr_num_destroy(). + */ +CRNum * +cr_num_dup (CRNum const * a_this) +{ + CRNum *result = NULL; + enum CRStatus status = CR_OK; + + g_return_val_if_fail (a_this, NULL); + + result = cr_num_new (); + g_return_val_if_fail (result, NULL); + + status = cr_num_copy (result, a_this); + g_return_val_if_fail (status == CR_OK, NULL); + + return result; +} + +/** + * cr_num_set: + *Sets an instance of #CRNum. + *@a_this: the current instance of #CRNum to be set. + *@a_val: the new numerical value to be hold by the current + *instance of #CRNum + *@a_type: the new type of #CRNum. + * + * Returns CR_OK upon successful completion, an error code otherwise. + */ +enum CRStatus +cr_num_set (CRNum * a_this, gdouble a_val, enum CRNumType a_type) +{ + g_return_val_if_fail (a_this, CR_BAD_PARAM_ERROR); + + a_this->val = a_val; + a_this->type = a_type; + + return CR_OK; +} + +/** + * cr_num_is_fixed_length: + * @a_this: the current instance of #CRNum . + * + *Tests if the current instance of #CRNum is a fixed + *length value or not. Typically a fixed length value + *is anything from NUM_LENGTH_EM to NUM_LENGTH_PC. + *See the definition of #CRNumType to see what we mean. + * + *Returns TRUE if the instance of #CRNum is a fixed length number, + *FALSE otherwise. + */ +gboolean +cr_num_is_fixed_length (CRNum const * a_this) +{ + gboolean result = FALSE; + + g_return_val_if_fail (a_this, FALSE); + + if (a_this->type >= NUM_LENGTH_EM + && a_this->type <= NUM_LENGTH_PC) { + result = TRUE ; + } + return result ; +} + +/** + * cr_num_destroy: + *@a_this: the this pointer of + *the current instance of #CRNum. + * + *The destructor of #CRNum. + */ +void +cr_num_destroy (CRNum * a_this) +{ + g_return_if_fail (a_this); + + g_free (a_this); +} diff --git a/src/st/croco/cr-num.h b/src/st/croco/cr-num.h new file mode 100644 index 0000000..2b73aaf --- /dev/null +++ b/src/st/croco/cr-num.h @@ -0,0 +1,127 @@ +/* -*- Mode: C; indent-tabs-mode:nil; c-basic-offset: 8-*- */ + +/* + * This file is part of The Croco Library + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of version 2.1 of the GNU Lesser General Public + * License as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 + * USA + * + * Author: Dodji Seketeli + * See COPYRIGHTS file for copyright information + */ + + +/** + *@file + *The declaration + *of the #CRNum class. + */ + +#ifndef __CR_NUM_H__ +#define __CR_NUM_H__ + +#include <glib.h> +#include "cr-utils.h" +#include "cr-parsing-location.h" + +G_BEGIN_DECLS + +/** + *@file + *The declaration of the #CRNum class. + * + */ + +/** + *The different types + *of numbers. + *Please, do not modify + *the declaration order of the enum + *members, unless you know + *what you are doing. + */ +enum CRNumType +{ + NUM_AUTO = 0, + NUM_GENERIC, + NUM_LENGTH_EM, + NUM_LENGTH_EX, + NUM_LENGTH_PX, + NUM_LENGTH_IN, + NUM_LENGTH_CM, + NUM_LENGTH_MM, + NUM_LENGTH_PT, + NUM_LENGTH_PC, + NUM_ANGLE_DEG, + NUM_ANGLE_RAD, + NUM_ANGLE_GRAD, + NUM_TIME_MS, + NUM_TIME_S, + NUM_FREQ_HZ, + NUM_FREQ_KHZ, + NUM_PERCENTAGE, + NUM_INHERIT, + NUM_UNKNOWN_TYPE, + NB_NUM_TYPE +} ; + + +/** + *An abstraction of a number (num) + *as defined in the css2 spec. + */ +typedef struct _CRNum CRNum ; + +/** + *An abstraction of a number (num) + *as defined in the css2 spec. + */ +struct _CRNum +{ + enum CRNumType type ; + gdouble val ; + CRParsingLocation location ; +} ; + +CRNum * +cr_num_new (void) ; + +CRNum * +cr_num_new_with_val (gdouble a_val, + enum CRNumType a_type) ; + +CRNum * +cr_num_dup (CRNum const *a_this) ; + +guchar * +cr_num_to_string (CRNum const *a_this) ; + +enum CRStatus +cr_num_copy (CRNum *a_dest, CRNum const *a_src) ; + +enum CRStatus +cr_num_set (CRNum *a_this, gdouble a_val, + enum CRNumType a_type) ; + +gboolean +cr_num_is_fixed_length (CRNum const *a_this) ; + +void +cr_num_destroy (CRNum *a_this) ; + + +G_END_DECLS + + +#endif /*__CR_NUM_H__*/ diff --git a/src/st/croco/cr-om-parser.c b/src/st/croco/cr-om-parser.c new file mode 100644 index 0000000..90f7106 --- /dev/null +++ b/src/st/croco/cr-om-parser.c @@ -0,0 +1,1142 @@ +/* -*- Mode: C; indent-tabs-mode:nil; c-basic-offset: 8-*- */ + +/* + * This file is part of The Croco Library + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of version 2.1 of the GNU Lesser General Public + * License as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 + * USA + * + * Author: Dodji Seketeli + * See COPYRIGHTS file for copyright information. + */ + +#include <string.h> +#include "cr-utils.h" +#include "cr-om-parser.h" + +/** + *@CROMParser: + * + *The definition of the CSS Object Model Parser. + *This parser uses (and sits) the SAC api of libcroco defined + *in cr-parser.h and cr-doc-handler.h + */ + +struct _CROMParserPriv { + CRParser *parser; +}; + +#define PRIVATE(a_this) ((a_this)->priv) + +/* + *Forward declaration of a type defined later + *in this file. + */ +struct _ParsingContext; +typedef struct _ParsingContext ParsingContext; + +static ParsingContext *new_parsing_context (void); + +static void destroy_context (ParsingContext * a_ctxt); + +static void unrecoverable_error (CRDocHandler * a_this); + +static void error (CRDocHandler * a_this); + +static void property (CRDocHandler * a_this, + CRString * a_name, + CRTerm * a_expression, + gboolean a_important); + +static void end_selector (CRDocHandler * a_this, + CRSelector * a_selector_list); + +static void start_selector (CRDocHandler * a_this, + CRSelector * a_selector_list); + +static void start_font_face (CRDocHandler * a_this, + CRParsingLocation *a_location); + +static void end_font_face (CRDocHandler * a_this); + +static void end_document (CRDocHandler * a_this); + +static void start_document (CRDocHandler * a_this); + +static void charset (CRDocHandler * a_this, + CRString * a_charset, + CRParsingLocation *a_location); + +static void start_page (CRDocHandler * a_this, CRString * a_page, + CRString * a_pseudo_page, + CRParsingLocation *a_location); + +static void end_page (CRDocHandler * a_this, CRString * a_page, + CRString * a_pseudo_page); + +static void start_media (CRDocHandler * a_this, + GList * a_media_list, + CRParsingLocation *a_location); + +static void end_media (CRDocHandler * a_this, + GList * a_media_list); + +static void import_style (CRDocHandler * a_this, + GList * a_media_list, + CRString * a_uri, + CRString * a_uri_default_ns, + CRParsingLocation *a_location); + +struct _ParsingContext { + CRStyleSheet *stylesheet; + CRStatement *cur_stmt; + CRStatement *cur_media_stmt; +}; + +/******************************************** + *Private methods + ********************************************/ + +static ParsingContext * +new_parsing_context (void) +{ + ParsingContext *result = NULL; + + result = g_try_malloc (sizeof (ParsingContext)); + if (!result) { + cr_utils_trace_info ("Out of Memory"); + return NULL; + } + memset (result, 0, sizeof (ParsingContext)); + return result; +} + +static void +destroy_context (ParsingContext * a_ctxt) +{ + g_return_if_fail (a_ctxt); + + if (a_ctxt->stylesheet) { + cr_stylesheet_destroy (a_ctxt->stylesheet); + a_ctxt->stylesheet = NULL; + } + if (a_ctxt->cur_stmt) { + cr_statement_destroy (a_ctxt->cur_stmt); + a_ctxt->cur_stmt = NULL; + } + g_free (a_ctxt); +} + +static enum CRStatus +cr_om_parser_init_default_sac_handler (CROMParser * a_this) +{ + CRDocHandler *sac_handler = NULL; + gboolean created_handler = FALSE; + enum CRStatus status = CR_OK; + + g_return_val_if_fail (a_this && PRIVATE (a_this) + && PRIVATE (a_this)->parser, + CR_BAD_PARAM_ERROR); + + status = cr_parser_get_sac_handler (PRIVATE (a_this)->parser, + &sac_handler); + g_return_val_if_fail (status == CR_OK, status); + + if (!sac_handler) { + sac_handler = cr_doc_handler_new (); + created_handler = TRUE; + } + + /* + *initialize here the sac handler. + */ + sac_handler->start_document = start_document; + sac_handler->end_document = end_document; + sac_handler->start_selector = start_selector; + sac_handler->end_selector = end_selector; + sac_handler->property = property; + sac_handler->start_font_face = start_font_face; + sac_handler->end_font_face = end_font_face; + sac_handler->error = error; + sac_handler->unrecoverable_error = unrecoverable_error; + sac_handler->charset = charset; + sac_handler->start_page = start_page; + sac_handler->end_page = end_page; + sac_handler->start_media = start_media; + sac_handler->end_media = end_media; + sac_handler->import_style = import_style; + + if (created_handler) { + status = cr_parser_set_sac_handler (PRIVATE (a_this)->parser, + sac_handler); + cr_doc_handler_unref (sac_handler); + } + + return status; + +} + +static void +start_document (CRDocHandler * a_this) +{ + ParsingContext *ctxt = NULL; + CRStyleSheet *stylesheet = NULL; + + g_return_if_fail (a_this); + + ctxt = new_parsing_context (); + g_return_if_fail (ctxt); + + stylesheet = cr_stylesheet_new (NULL); + ctxt->stylesheet = stylesheet; + cr_doc_handler_set_ctxt (a_this, ctxt); +} + +static void +start_font_face (CRDocHandler * a_this, + CRParsingLocation *a_location) +{ + enum CRStatus status = CR_OK; + ParsingContext *ctxt = NULL; + ParsingContext **ctxtptr = NULL; + + g_return_if_fail (a_this); + + g_return_if_fail (a_this); + ctxtptr = &ctxt; + status = cr_doc_handler_get_ctxt (a_this, (gpointer *) ctxtptr); + g_return_if_fail (status == CR_OK && ctxt); + g_return_if_fail (ctxt->cur_stmt == NULL); + + ctxt->cur_stmt = + cr_statement_new_at_font_face_rule (ctxt->stylesheet, NULL); + + g_return_if_fail (ctxt->cur_stmt); +} + +static void +end_font_face (CRDocHandler * a_this) +{ + enum CRStatus status = CR_OK; + ParsingContext *ctxt = NULL; + ParsingContext **ctxtptr = NULL; + CRStatement *stmts = NULL; + + g_return_if_fail (a_this); + + g_return_if_fail (a_this); + ctxtptr = &ctxt; + status = cr_doc_handler_get_ctxt (a_this, (gpointer *) ctxtptr); + g_return_if_fail (status == CR_OK && ctxt); + g_return_if_fail + (ctxt->cur_stmt + && ctxt->cur_stmt->type == AT_FONT_FACE_RULE_STMT + && ctxt->stylesheet); + + stmts = cr_statement_append (ctxt->stylesheet->statements, + ctxt->cur_stmt); + if (!stmts) + goto error; + + ctxt->stylesheet->statements = stmts; + stmts = NULL; + ctxt->cur_stmt = NULL; + + return; + + error: + + if (ctxt->cur_stmt) { + cr_statement_destroy (ctxt->cur_stmt); + ctxt->cur_stmt = NULL; + } + + if (!stmts) { + cr_statement_destroy (stmts); + stmts = NULL; + } +} + +static void +end_document (CRDocHandler * a_this) +{ + enum CRStatus status = CR_OK; + ParsingContext *ctxt = NULL; + ParsingContext **ctxtptr = NULL; + + g_return_if_fail (a_this); + ctxtptr = &ctxt; + status = cr_doc_handler_get_ctxt (a_this, (gpointer *) ctxtptr); + g_return_if_fail (status == CR_OK && ctxt); + + if (!ctxt->stylesheet || ctxt->cur_stmt) + goto error; + + status = cr_doc_handler_set_result (a_this, ctxt->stylesheet); + g_return_if_fail (status == CR_OK); + + ctxt->stylesheet = NULL; + destroy_context (ctxt); + cr_doc_handler_set_ctxt (a_this, NULL); + + return; + + error: + if (ctxt) { + destroy_context (ctxt); + } +} + +static void +charset (CRDocHandler * a_this, CRString * a_charset, + CRParsingLocation *a_location) +{ + enum CRStatus status = CR_OK; + CRStatement *stmt = NULL, + *stmt2 = NULL; + CRString *charset = NULL; + + ParsingContext *ctxt = NULL; + ParsingContext **ctxtptr = NULL; + + g_return_if_fail (a_this); + ctxtptr = &ctxt; + status = cr_doc_handler_get_ctxt (a_this, (gpointer *) ctxtptr); + g_return_if_fail (status == CR_OK && ctxt); + g_return_if_fail (ctxt->stylesheet); + + charset = cr_string_dup (a_charset) ; + stmt = cr_statement_new_at_charset_rule (ctxt->stylesheet, charset); + g_return_if_fail (stmt); + stmt2 = cr_statement_append (ctxt->stylesheet->statements, stmt); + if (!stmt2) { + if (stmt) { + cr_statement_destroy (stmt); + stmt = NULL; + } + if (charset) { + cr_string_destroy (charset); + } + return; + } + ctxt->stylesheet->statements = stmt2; + stmt2 = NULL; +} + +static void +start_page (CRDocHandler * a_this, + CRString * a_page, + CRString * a_pseudo, + CRParsingLocation *a_location) +{ + enum CRStatus status = CR_OK; + ParsingContext *ctxt = NULL; + ParsingContext **ctxtptr = NULL; + + g_return_if_fail (a_this); + ctxtptr = &ctxt; + status = cr_doc_handler_get_ctxt (a_this, (gpointer *) ctxtptr); + g_return_if_fail (status == CR_OK && ctxt); + g_return_if_fail (ctxt->cur_stmt == NULL); + + ctxt->cur_stmt = cr_statement_new_at_page_rule + (ctxt->stylesheet, NULL, NULL, NULL); + if (a_page) { + ctxt->cur_stmt->kind.page_rule->name = + cr_string_dup (a_page) ; + + if (!ctxt->cur_stmt->kind.page_rule->name) { + goto error; + } + } + if (a_pseudo) { + ctxt->cur_stmt->kind.page_rule->pseudo = + cr_string_dup (a_pseudo) ; + if (!ctxt->cur_stmt->kind.page_rule->pseudo) { + goto error; + } + } + return; + + error: + if (ctxt->cur_stmt) { + cr_statement_destroy (ctxt->cur_stmt); + ctxt->cur_stmt = NULL; + } +} + +static void +end_page (CRDocHandler * a_this, + CRString * a_page, + CRString * a_pseudo_page) +{ + enum CRStatus status = CR_OK; + ParsingContext *ctxt = NULL; + ParsingContext **ctxtptr = NULL; + CRStatement *stmt = NULL; + + (void) a_page; + (void) a_pseudo_page; + + g_return_if_fail (a_this); + + ctxtptr = &ctxt; + status = cr_doc_handler_get_ctxt (a_this, (gpointer *) ctxtptr); + + g_return_if_fail (status == CR_OK && ctxt); + + g_return_if_fail (ctxt->cur_stmt + && ctxt->cur_stmt->type == AT_PAGE_RULE_STMT + && ctxt->stylesheet); + + stmt = cr_statement_append (ctxt->stylesheet->statements, + ctxt->cur_stmt); + + if (stmt) { + ctxt->stylesheet->statements = stmt; + stmt = NULL; + ctxt->cur_stmt = NULL; + } + + if (ctxt->cur_stmt) { + cr_statement_destroy (ctxt->cur_stmt); + ctxt->cur_stmt = NULL; + } + a_page = NULL; /*keep compiler happy */ + a_pseudo_page = NULL; /*keep compiler happy */ +} + +static void +start_media (CRDocHandler * a_this, + GList * a_media_list, + CRParsingLocation *a_location) +{ + enum CRStatus status = CR_OK; + ParsingContext *ctxt = NULL; + ParsingContext **ctxtptr = NULL; + GList *media_list = NULL; + + g_return_if_fail (a_this); + ctxtptr = &ctxt; + status = cr_doc_handler_get_ctxt (a_this, (gpointer *) ctxtptr); + g_return_if_fail (status == CR_OK && ctxt); + + g_return_if_fail (ctxt + && ctxt->cur_stmt == NULL + && ctxt->cur_media_stmt == NULL + && ctxt->stylesheet); + if (a_media_list) { + /*duplicate the media_list */ + media_list = cr_utils_dup_glist_of_cr_string + (a_media_list); + } + ctxt->cur_media_stmt = + cr_statement_new_at_media_rule + (ctxt->stylesheet, NULL, media_list); + +} + +static void +end_media (CRDocHandler * a_this, GList * a_media_list) +{ + enum CRStatus status = CR_OK; + ParsingContext *ctxt = NULL; + ParsingContext **ctxtptr = NULL; + CRStatement *stmts = NULL; + + (void) a_media_list; + + g_return_if_fail (a_this); + + ctxtptr = &ctxt; + status = cr_doc_handler_get_ctxt (a_this, (gpointer *) ctxtptr); + + g_return_if_fail (status == CR_OK && ctxt); + + g_return_if_fail (ctxt + && ctxt->cur_media_stmt + && ctxt->cur_media_stmt->type == AT_MEDIA_RULE_STMT + && ctxt->stylesheet); + + stmts = cr_statement_append (ctxt->stylesheet->statements, + ctxt->cur_media_stmt); + + if (!stmts) { + cr_statement_destroy (ctxt->cur_media_stmt); + ctxt->cur_media_stmt = NULL; + } + + ctxt->stylesheet->statements = stmts; + stmts = NULL; + + ctxt->cur_stmt = NULL ; + ctxt->cur_media_stmt = NULL ; + a_media_list = NULL; +} + +static void +import_style (CRDocHandler * a_this, + GList * a_media_list, + CRString * a_uri, + CRString * a_uri_default_ns, + CRParsingLocation *a_location) +{ + enum CRStatus status = CR_OK; + CRString *uri = NULL; + CRStatement *stmt = NULL, + *stmt2 = NULL; + ParsingContext *ctxt = NULL; + ParsingContext **ctxtptr = NULL; + GList *media_list = NULL ; + + (void) a_uri_default_ns; + + g_return_if_fail (a_this); + + ctxtptr = &ctxt; + status = cr_doc_handler_get_ctxt (a_this, (gpointer *) ctxtptr); + + g_return_if_fail (status == CR_OK && ctxt); + + g_return_if_fail (ctxt->stylesheet); + + uri = cr_string_dup (a_uri) ; + + if (a_media_list) + media_list = cr_utils_dup_glist_of_cr_string (a_media_list) ; + + stmt = cr_statement_new_at_import_rule + (ctxt->stylesheet, uri, media_list, NULL); + + if (!stmt) + goto error; + + if (ctxt->cur_stmt) { + stmt2 = cr_statement_append (ctxt->cur_stmt, stmt); + if (!stmt2) + goto error; + ctxt->cur_stmt = stmt2; + stmt2 = NULL; + stmt = NULL; + } else { + stmt2 = cr_statement_append (ctxt->stylesheet->statements, + stmt); + if (!stmt2) + goto error; + ctxt->stylesheet->statements = stmt2; + stmt2 = NULL; + stmt = NULL; + } + + return; + + error: + if (uri) { + cr_string_destroy (uri); + } + + if (stmt) { + cr_statement_destroy (stmt); + stmt = NULL; + } + a_uri_default_ns = NULL; /*keep compiler happy */ +} + +static void +start_selector (CRDocHandler * a_this, CRSelector * a_selector_list) +{ + enum CRStatus status = CR_OK ; + ParsingContext *ctxt = NULL; + ParsingContext **ctxtptr = NULL; + + g_return_if_fail (a_this); + ctxtptr = &ctxt; + status = cr_doc_handler_get_ctxt (a_this, (gpointer *) ctxtptr); + g_return_if_fail (status == CR_OK && ctxt); + if (ctxt->cur_stmt) { + /*hmm, this should be NULL so free it */ + cr_statement_destroy (ctxt->cur_stmt); + ctxt->cur_stmt = NULL; + } + + ctxt->cur_stmt = cr_statement_new_ruleset + (ctxt->stylesheet, a_selector_list, NULL, NULL); +} + +static void +end_selector (CRDocHandler * a_this, CRSelector * a_selector_list) +{ + enum CRStatus status = CR_OK; + ParsingContext *ctxt = NULL; + ParsingContext **ctxtptr = NULL; + + (void) a_selector_list; + + g_return_if_fail (a_this); + + ctxtptr = &ctxt; + status = cr_doc_handler_get_ctxt (a_this, (gpointer *) ctxtptr); + + g_return_if_fail (status == CR_OK && ctxt); + + g_return_if_fail (ctxt->cur_stmt && ctxt->stylesheet); + + if (ctxt->cur_stmt) { + CRStatement *stmts = NULL; + + if (ctxt->cur_media_stmt) { + CRAtMediaRule *media_rule = NULL; + + media_rule = ctxt->cur_media_stmt->kind.media_rule; + + stmts = cr_statement_append + (media_rule->rulesets, ctxt->cur_stmt); + + if (!stmts) { + cr_utils_trace_info + ("Could not append a new statement"); + cr_statement_destroy (media_rule->rulesets); + ctxt->cur_media_stmt-> + kind.media_rule->rulesets = NULL; + return; + } + media_rule->rulesets = stmts; + ctxt->cur_stmt = NULL; + } else { + stmts = cr_statement_append + (ctxt->stylesheet->statements, + ctxt->cur_stmt); + if (!stmts) { + cr_utils_trace_info + ("Could not append a new statement"); + cr_statement_destroy (ctxt->cur_stmt); + ctxt->cur_stmt = NULL; + return; + } + ctxt->stylesheet->statements = stmts; + ctxt->cur_stmt = NULL; + } + + } + + a_selector_list = NULL; /*keep compiler happy */ +} + +static void +property (CRDocHandler * a_this, + CRString * a_name, + CRTerm * a_expression, + gboolean a_important) +{ + enum CRStatus status = CR_OK; + ParsingContext *ctxt = NULL; + ParsingContext **ctxtptr = NULL; + CRDeclaration *decl = NULL, + *decl2 = NULL; + CRString *str = NULL; + + g_return_if_fail (a_this); + ctxtptr = &ctxt; + status = cr_doc_handler_get_ctxt (a_this, (gpointer *) ctxtptr); + g_return_if_fail (status == CR_OK && ctxt); + + /* + *make sure a current ruleset statement has been allocated + *already. + */ + g_return_if_fail + (ctxt->cur_stmt + && + (ctxt->cur_stmt->type == RULESET_STMT + || ctxt->cur_stmt->type == AT_FONT_FACE_RULE_STMT + || ctxt->cur_stmt->type == AT_PAGE_RULE_STMT)); + + if (a_name) { + str = cr_string_dup (a_name); + g_return_if_fail (str); + } + + /*instantiates a new declaration */ + decl = cr_declaration_new (ctxt->cur_stmt, str, a_expression); + g_return_if_fail (decl); + str = NULL; + decl->important = a_important; + /* + *add the new declaration to the current statement + *being build. + */ + switch (ctxt->cur_stmt->type) { + case RULESET_STMT: + decl2 = cr_declaration_append + (ctxt->cur_stmt->kind.ruleset->decl_list, decl); + if (!decl2) { + cr_declaration_destroy (decl); + cr_utils_trace_info + ("Could not append decl to ruleset"); + goto error; + } + ctxt->cur_stmt->kind.ruleset->decl_list = decl2; + decl = NULL; + decl2 = NULL; + break; + + case AT_FONT_FACE_RULE_STMT: + decl2 = cr_declaration_append + (ctxt->cur_stmt->kind.font_face_rule->decl_list, + decl); + if (!decl2) { + cr_declaration_destroy (decl); + cr_utils_trace_info + ("Could not append decl to ruleset"); + goto error; + } + ctxt->cur_stmt->kind.font_face_rule->decl_list = decl2; + decl = NULL; + decl2 = NULL; + break; + case AT_PAGE_RULE_STMT: + decl2 = cr_declaration_append + (ctxt->cur_stmt->kind.page_rule->decl_list, decl); + if (!decl2) { + cr_declaration_destroy (decl); + cr_utils_trace_info + ("Could not append decl to ruleset"); + goto error; + } + ctxt->cur_stmt->kind.page_rule->decl_list = decl2; + decl = NULL; + decl2 = NULL; + break; + + default: + goto error; + break; + } + + return; + + error: + if (str) { + g_free (str); + str = NULL; + } + + if (decl) { + cr_declaration_destroy (decl); + decl = NULL; + } +} + +static void +error (CRDocHandler * a_this) +{ + enum CRStatus status = CR_OK; + ParsingContext *ctxt = NULL; + ParsingContext **ctxtptr = NULL; + + g_return_if_fail (a_this); + ctxtptr = &ctxt; + status = cr_doc_handler_get_ctxt (a_this, (gpointer *) ctxtptr); + g_return_if_fail (status == CR_OK && ctxt); + + if (ctxt->cur_stmt) { + cr_statement_destroy (ctxt->cur_stmt); + ctxt->cur_stmt = NULL; + } +} + +static void +unrecoverable_error (CRDocHandler * a_this) +{ + enum CRStatus status = CR_OK; + ParsingContext *ctxt = NULL; + ParsingContext **ctxtptr = NULL; + + ctxtptr = &ctxt; + status = cr_doc_handler_get_ctxt (a_this, (gpointer *) ctxtptr); + g_return_if_fail (status == CR_OK); + + if (ctxt) { + if (ctxt->stylesheet) { + status = cr_doc_handler_set_result + (a_this, ctxt->stylesheet); + g_return_if_fail (status == CR_OK); + } + g_free (ctxt); + cr_doc_handler_set_ctxt (a_this, NULL); + } +} + +/******************************************** + *Public methods + ********************************************/ + +/** + * cr_om_parser_new: + *@a_input: the input stream. + * + *Constructor of the CROMParser. + *Returns the newly built instance of #CROMParser. + */ +CROMParser * +cr_om_parser_new (CRInput * a_input) +{ + CROMParser *result = NULL; + enum CRStatus status = CR_OK; + + result = g_try_malloc (sizeof (CROMParser)); + + if (!result) { + cr_utils_trace_info ("Out of memory"); + return NULL; + } + + memset (result, 0, sizeof (CROMParser)); + PRIVATE (result) = g_try_malloc (sizeof (CROMParserPriv)); + + if (!PRIVATE (result)) { + cr_utils_trace_info ("Out of memory"); + goto error; + } + + memset (PRIVATE (result), 0, sizeof (CROMParserPriv)); + + PRIVATE (result)->parser = cr_parser_new_from_input (a_input); + + if (!PRIVATE (result)->parser) { + cr_utils_trace_info ("parsing instantiation failed"); + goto error; + } + + status = cr_om_parser_init_default_sac_handler (result); + + if (status != CR_OK) { + goto error; + } + + return result; + + error: + + if (result) { + cr_om_parser_destroy (result); + } + + return NULL; +} + +/** + * cr_om_parser_parse_buf: + *@a_this: the current instance of #CROMParser. + *@a_buf: the in memory buffer to parse. + *@a_len: the length of the in memory buffer in number of bytes. + *@a_enc: the encoding of the in memory buffer. + *@a_result: out parameter the resulting style sheet + * + *Parses the content of an in memory buffer. + * + *Returns CR_OK upon successful completion, an error code otherwise. + */ +enum CRStatus +cr_om_parser_parse_buf (CROMParser * a_this, + const guchar * a_buf, + gulong a_len, + enum CREncoding a_enc, CRStyleSheet ** a_result) +{ + + enum CRStatus status = CR_OK; + + g_return_val_if_fail (a_this && a_result, CR_BAD_PARAM_ERROR); + + if (!PRIVATE (a_this)->parser) { + PRIVATE (a_this)->parser = cr_parser_new (NULL); + } + + status = cr_parser_parse_buf (PRIVATE (a_this)->parser, + a_buf, a_len, a_enc); + + if (status == CR_OK) { + CRStyleSheet *result = NULL; + CRStyleSheet **resultptr = NULL; + CRDocHandler *sac_handler = NULL; + + cr_parser_get_sac_handler (PRIVATE (a_this)->parser, + &sac_handler); + g_return_val_if_fail (sac_handler, CR_ERROR); + resultptr = &result; + status = cr_doc_handler_get_result (sac_handler, + (gpointer *) resultptr); + g_return_val_if_fail (status == CR_OK, status); + + if (result) + *a_result = result; + } + + return status; +} + +/** + * cr_om_parser_simply_parse_buf: + *@a_buf: the css2 in memory buffer. + *@a_len: the length of the in memory buffer. + *@a_enc: the encoding of the in memory buffer. + *@a_result: out parameter. The resulting css2 style sheet. + * + *The simpler way to parse an in memory css2 buffer. + * + *Returns CR_OK upon successful completion, an error code otherwise. + */ +enum CRStatus +cr_om_parser_simply_parse_buf (const guchar * a_buf, + gulong a_len, + enum CREncoding a_enc, + CRStyleSheet ** a_result) +{ + CROMParser *parser = NULL; + enum CRStatus status = CR_OK; + + parser = cr_om_parser_new (NULL); + if (!parser) { + cr_utils_trace_info ("Could not create om parser"); + cr_utils_trace_info ("System possibly out of memory"); + return CR_ERROR; + } + + status = cr_om_parser_parse_buf (parser, a_buf, a_len, + a_enc, a_result); + + if (parser) { + cr_om_parser_destroy (parser); + parser = NULL; + } + + return status; +} + +/** + * cr_om_parser_parse_file: + *@a_this: the current instance of the cssom parser. + *@a_file_uri: the uri of the file. + *(only local file paths are supported so far) + *@a_enc: the encoding of the file. + *@a_result: out parameter. A pointer + *the build css object model. + * + *Parses a css2 stylesheet contained + *in a file. + * + * Returns CR_OK upon successful completion, an error code otherwise. + */ +enum CRStatus +cr_om_parser_parse_file (CROMParser * a_this, + const guchar * a_file_uri, + enum CREncoding a_enc, CRStyleSheet ** a_result) +{ + enum CRStatus status = CR_OK; + + g_return_val_if_fail (a_this && a_file_uri && a_result, + CR_BAD_PARAM_ERROR); + + if (!PRIVATE (a_this)->parser) { + PRIVATE (a_this)->parser = cr_parser_new_from_file + (a_file_uri, a_enc); + } + + status = cr_parser_parse_file (PRIVATE (a_this)->parser, + a_file_uri, a_enc); + + if (status == CR_OK) { + CRStyleSheet *result = NULL; + CRStyleSheet **resultptr = NULL; + CRDocHandler *sac_handler = NULL; + + cr_parser_get_sac_handler (PRIVATE (a_this)->parser, + &sac_handler); + g_return_val_if_fail (sac_handler, CR_ERROR); + resultptr = &result; + status = cr_doc_handler_get_result + (sac_handler, (gpointer *) resultptr); + g_return_val_if_fail (status == CR_OK, status); + if (result) + *a_result = result; + } + + return status; +} + +/** + * cr_om_parser_simply_parse_file: + *@a_file_path: the css2 local file path. + *@a_enc: the file encoding. + *@a_result: out parameter. The returned css stylesheet. + *Must be freed by the caller using cr_stylesheet_destroy. + * + *The simpler method to parse a css2 file. + * + *Returns CR_OK upon successful completion, an error code otherwise. + *Note that this method uses cr_om_parser_parse_file() so both methods + *have the same return values. + */ +enum CRStatus +cr_om_parser_simply_parse_file (const guchar * a_file_path, + enum CREncoding a_enc, + CRStyleSheet ** a_result) +{ + CROMParser *parser = NULL; + enum CRStatus status = CR_OK; + + parser = cr_om_parser_new (NULL); + if (!parser) { + cr_utils_trace_info ("Could not allocate om parser"); + cr_utils_trace_info ("System may be out of memory"); + return CR_ERROR; + } + + status = cr_om_parser_parse_file (parser, a_file_path, + a_enc, a_result); + if (parser) { + cr_om_parser_destroy (parser); + parser = NULL; + } + + return status; +} + +/** + * cr_om_parser_parse_paths_to_cascade: + *@a_this: the current instance of #CROMParser + *@a_author_path: the path to the author stylesheet + *@a_user_path: the path to the user stylesheet + *@a_ua_path: the path to the User Agent stylesheet + *@a_encoding: the encoding of the sheets. + *@a_result: out parameter. The resulting cascade if the parsing + *was okay + * + *Parses three sheets located by their paths and build a cascade + * + *Returns CR_OK upon successful completion, an error code otherwise + */ +enum CRStatus +cr_om_parser_parse_paths_to_cascade (CROMParser * a_this, + const guchar * a_author_path, + const guchar * a_user_path, + const guchar * a_ua_path, + enum CREncoding a_encoding, + CRCascade ** a_result) +{ + enum CRStatus status = CR_OK; + + /*0->author sheet, 1->user sheet, 2->UA sheet */ + CRStyleSheet *sheets[3]; + guchar *paths[3]; + CRCascade *result = NULL; + gint i = 0; + + g_return_val_if_fail (a_this, CR_BAD_PARAM_ERROR); + + memset (sheets, 0, sizeof (CRStyleSheet*) * 3); + paths[0] = (guchar *) a_author_path; + paths[1] = (guchar *) a_user_path; + paths[2] = (guchar *) a_ua_path; + + for (i = 0; i < 3; i++) { + status = cr_om_parser_parse_file (a_this, paths[i], + a_encoding, &sheets[i]); + if (status != CR_OK) { + if (sheets[i]) { + cr_stylesheet_unref (sheets[i]); + sheets[i] = NULL; + } + continue; + } + } + result = cr_cascade_new (sheets[0], sheets[1], sheets[2]); + if (!result) { + for (i = 0; i < 3; i++) { + cr_stylesheet_unref (sheets[i]); + sheets[i] = 0; + } + return CR_ERROR; + } + *a_result = result; + return CR_OK; +} + +/** + * cr_om_parser_simply_parse_paths_to_cascade: + *@a_author_path: the path to the author stylesheet + *@a_user_path: the path to the user stylesheet + *@a_ua_path: the path to the User Agent stylesheet + *@a_encoding: the encoding of the sheets. + *@a_result: out parameter. The resulting cascade if the parsing + *was okay + * + *Parses three sheets located by their paths and build a cascade + * + *Returns CR_OK upon successful completion, an error code otherwise + */ +enum CRStatus +cr_om_parser_simply_parse_paths_to_cascade (const guchar * a_author_path, + const guchar * a_user_path, + const guchar * a_ua_path, + enum CREncoding a_encoding, + CRCascade ** a_result) +{ + enum CRStatus status = CR_OK; + CROMParser *parser = NULL; + + parser = cr_om_parser_new (NULL); + if (!parser) { + cr_utils_trace_info ("could not allocated om parser"); + cr_utils_trace_info ("System may be out of memory"); + return CR_ERROR; + } + status = cr_om_parser_parse_paths_to_cascade (parser, + a_author_path, + a_user_path, + a_ua_path, + a_encoding, a_result); + if (parser) { + cr_om_parser_destroy (parser); + parser = NULL; + } + return status; +} + +/** + * cr_om_parser_destroy: + *@a_this: the current instance of #CROMParser. + * + *Destructor of the #CROMParser. + */ +void +cr_om_parser_destroy (CROMParser * a_this) +{ + g_return_if_fail (a_this && PRIVATE (a_this)); + + if (PRIVATE (a_this)->parser) { + cr_parser_destroy (PRIVATE (a_this)->parser); + PRIVATE (a_this)->parser = NULL; + } + + if (PRIVATE (a_this)) { + g_free (PRIVATE (a_this)); + PRIVATE (a_this) = NULL; + } + + if (a_this) { + g_free (a_this); + a_this = NULL; + } +} diff --git a/src/st/croco/cr-om-parser.h b/src/st/croco/cr-om-parser.h new file mode 100644 index 0000000..13d35b1 --- /dev/null +++ b/src/st/croco/cr-om-parser.h @@ -0,0 +1,98 @@ +/* -*- Mode: C; indent-tabs-mode:nil; c-basic-offset: 8-*- */ + +/* + * This file is part of The Croco Library + * + * Copyright (C) 2002-2003 Dodji Seketeli <dodji@seketeli.org> + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of version 2.1 of the GNU Lesser General Public + * License as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the + * GNU Lesser General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 + * USA + */ + +/* + *$Id$ + */ + +#ifndef __CR_OM_PARSER_H__ +#define __CR_OM_PARSER_H__ + +#include "cr-parser.h" +#include "cr-cascade.h" + + +/** + *@file + *The definition of the CSS Object Model Parser. + *This parser uses (and sits) the SAC api of libcroco defined + *in cr-parser.h and cr-doc-handler.h + */ + +G_BEGIN_DECLS + +typedef struct _CROMParser CROMParser ; +typedef struct _CROMParserPriv CROMParserPriv ; + +/** + *The Object model parser. + *Can parse a css file and build a css object model. + *This parser uses an instance of #CRParser and defines + *a set of SAC callbacks to build the Object Model. + */ +struct _CROMParser +{ + CROMParserPriv *priv ; +} ; + +CROMParser * cr_om_parser_new (CRInput *a_input) ; + + +enum CRStatus cr_om_parser_simply_parse_file (const guchar *a_file_path, + enum CREncoding a_enc, + CRStyleSheet **a_result) ; + +enum CRStatus cr_om_parser_parse_file (CROMParser *a_this, + const guchar *a_file_uri, + enum CREncoding a_enc, + CRStyleSheet **a_result) ; + +enum CRStatus cr_om_parser_simply_parse_buf (const guchar *a_buf, + gulong a_len, + enum CREncoding a_enc, + CRStyleSheet **a_result) ; + +enum CRStatus cr_om_parser_parse_buf (CROMParser *a_this, + const guchar *a_buf, + gulong a_len, + enum CREncoding a_enc, + CRStyleSheet **a_result) ; + +enum CRStatus cr_om_parser_parse_paths_to_cascade (CROMParser *a_this, + const guchar *a_author_path, + const guchar *a_user_path, + const guchar *a_ua_path, + enum CREncoding a_encoding, + CRCascade ** a_result) ; + +enum CRStatus cr_om_parser_simply_parse_paths_to_cascade (const guchar *a_author_path, + const guchar *a_user_path, + const guchar *a_ua_path, + enum CREncoding a_encoding, + CRCascade ** a_result) ; + +void cr_om_parser_destroy (CROMParser *a_this) ; + +G_END_DECLS + +#endif /*__CR_OM_PARSER_H__*/ diff --git a/src/st/croco/cr-parser.c b/src/st/croco/cr-parser.c new file mode 100644 index 0000000..d4f40cf --- /dev/null +++ b/src/st/croco/cr-parser.c @@ -0,0 +1,4539 @@ +/* -*- Mode: C; indent-tabs-mode:nil; c-basic-offset: 8-*- */ + +/* + * This file is part of The Croco Library + * + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of version 2.1 of the + * GNU Lesser General Public + * License as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 + * USA + * + * Author: Dodji Seketeli + * See COPYRIGHTS file for copyrights information. + */ + +/** + *@CRParser: + * + *The definition of the #CRParser class. + */ + +#include "string.h" +#include "cr-parser.h" +#include "cr-num.h" +#include "cr-term.h" +#include "cr-simple-sel.h" +#include "cr-attr-sel.h" + +/* + *Random notes: + *CSS core syntax vs CSS level 2 syntax + *===================================== + * + *One must keep in mind + *that css UA must comply with two syntaxes. + * + *1/the specific syntax that defines the css language + *for a given level of specification (e.g css2 syntax + *defined in appendix D.1 of the css2 spec) + * + *2/the core (general) syntax that is there to allow + *UAs to parse style sheets written in levels of CSS that + *didn't exist at the time the UAs were created. + * + *the name of parsing functions (or methods) contained in this file + *follows the following scheme: cr_parser_parse_<production_name> (...) ; + *where <production_name> is the name + *of a production of the css2 language. + *When a given production is + *defined by the css2 level grammar *and* by the + *css core syntax, there will be two functions to parse that production: + *one will parse the production defined by the css2 level grammar and the + *other will parse the production defined by the css core grammar. + *The css2 level grammar related parsing function will be called: + *cr_parser_parse_<production_name> (...) ; + *Then css core grammar related parsing function will be called: + *cr_parser_parse_<production_name>_core (...) ; + * + *If a production is defined only by the css core grammar, then + *it will be named: + *cr_parser_parse_<production_name>_core (...) ; + */ + +typedef struct _CRParserError CRParserError; + +/** + *An abstraction of an error reported by by the + *parsing routines. + */ +struct _CRParserError { + guchar *msg; + enum CRStatus status; + glong line; + glong column; + glong byte_num; +}; + +enum CRParserState { + READY_STATE = 0, + TRY_PARSE_CHARSET_STATE, + CHARSET_PARSED_STATE, + TRY_PARSE_IMPORT_STATE, + IMPORT_PARSED_STATE, + TRY_PARSE_RULESET_STATE, + RULESET_PARSED_STATE, + TRY_PARSE_MEDIA_STATE, + MEDIA_PARSED_STATE, + TRY_PARSE_PAGE_STATE, + PAGE_PARSED_STATE, + TRY_PARSE_FONT_FACE_STATE, + FONT_FACE_PARSED_STATE +} ; + +/** + *The private attributes of + *#CRParser. + */ +struct _CRParserPriv { + /** + *The tokenizer + */ + CRTknzr *tknzr; + + /** + *The sac handlers to call + *to notify the parsing of + *the css2 constructions. + */ + CRDocHandler *sac_handler; + + /** + *A stack of errors reported + *by the parsing routines. + *Contains instance of #CRParserError. + *This pointer is the top of the stack. + */ + GList *err_stack; + + enum CRParserState state; + gboolean resolve_import; + gboolean is_case_sensitive; + gboolean use_core_grammar; +}; + +#define PRIVATE(obj) ((obj)->priv) + +#define CHARS_TAB_SIZE 12 + +#define RECURSIVE_CALLERS_LIMIT 100 + +/** + * IS_NUM: + *@a_char: the char to test. + *return TRUE if the character is a number ([0-9]), FALSE otherwise + */ +#define IS_NUM(a_char) (((a_char) >= '0' && (a_char) <= '9')?TRUE:FALSE) + +/** + *Checks if 'status' equals CR_OK. If not, goto the 'error' label. + * + *@param status the status (of type enum CRStatus) to test. + *@param is_exception if set to FALSE, the final status returned + *by the current function will be CR_PARSING_ERROR. If set to TRUE, the + *current status will be the current value of the 'status' variable. + * + */ +#define CHECK_PARSING_STATUS(status, is_exception) \ +if ((status) != CR_OK) \ +{ \ + if (is_exception == FALSE) \ + { \ + status = CR_PARSING_ERROR ; \ + } \ + goto error ; \ +} + +/** + * CHECK_PARSING_STATUS_ERR: + *@a_this: the current instance of #CRParser . + *@a_status: the status to check. Is of type enum #CRStatus. + *@a_is_exception: in case of error, if is TRUE, the status + *is set to CR_PARSING_ERROR before goto error. If is false, the + *real low level status is kept and will be returned by the + *upper level function that called this macro. Usually,this must + *be set to FALSE. + * + *same as CHECK_PARSING_STATUS() but this one pushes an error + *on the parser error stack when an error arises. + * + */ +#define CHECK_PARSING_STATUS_ERR(a_this, a_status, a_is_exception,\ + a_err_msg, a_err_status) \ +if ((a_status) != CR_OK) \ +{ \ + if (a_is_exception == FALSE) a_status = CR_PARSING_ERROR ; \ + cr_parser_push_error (a_this, a_err_msg, a_err_status) ; \ + goto error ; \ +} + +/** + *Peeks the next char from the input stream of the current parser + *by invoking cr_tknzr_input_peek_char(). + *invokes CHECK_PARSING_STATUS on the status returned by + *cr_tknzr_peek_char(). + * + *@param a_this the current instance of #CRParser. + *@param a_to_char a pointer to the char where to store the + *char peeked. + */ +#define PEEK_NEXT_CHAR(a_this, a_to_char) \ +{\ +status = cr_tknzr_peek_char (PRIVATE (a_this)->tknzr, a_to_char) ; \ +CHECK_PARSING_STATUS (status, TRUE) \ +} + +/** + *Reads the next char from the input stream of the current parser. + *In case of error, jumps to the "error:" label located in the + *function where this macro is called. + *@param a_this the current instance of #CRParser + *@param to_char a pointer to the guint32 char where to store + *the character read. + */ +#define READ_NEXT_CHAR(a_this, a_to_char) \ +status = cr_tknzr_read_char (PRIVATE (a_this)->tknzr, a_to_char) ; \ +CHECK_PARSING_STATUS (status, TRUE) + +/** + *Gets information about the current position in + *the input of the parser. + *In case of failure, this macro returns from the + *calling function and + *returns a status code of type enum #CRStatus. + *@param a_this the current instance of #CRParser. + *@param a_pos out parameter. A pointer to the position + *inside the current parser input. Must + */ +#define RECORD_INITIAL_POS(a_this, a_pos) \ +status = cr_tknzr_get_cur_pos (PRIVATE \ +(a_this)->tknzr, a_pos) ; \ +g_return_val_if_fail (status == CR_OK, status) + +/** + *Gets the address of the current byte inside the + *parser input. + *@param parser the current instance of #CRParser. + *@param addr out parameter a pointer (guchar*) + *to where the address must be put. + */ +#define RECORD_CUR_BYTE_ADDR(a_this, a_addr) \ +status = cr_tknzr_get_cur_byte_addr \ + (PRIVATE (a_this)->tknzr, a_addr) ; \ +CHECK_PARSING_STATUS (status, TRUE) + +/** + *Peeks a byte from the topmost parser input at + *a given offset from the current position. + *If it fails, goto the "error:" label. + * + *@param a_parser the current instance of #CRParser. + *@param a_offset the offset of the byte to peek, the + *current byte having the offset '0'. + *@param a_byte_ptr out parameter a pointer (guchar*) to + *where the peeked char is to be stored. + */ +#define PEEK_BYTE(a_parser, a_offset, a_byte_ptr) \ +status = cr_tknzr_peek_byte (PRIVATE (a_this)->tknzr, \ + a_offset, \ + a_byte_ptr) ; \ +CHECK_PARSING_STATUS (status, TRUE) ; + +#define BYTE(a_parser, a_offset, a_eof) \ +cr_tknzr_peek_byte2 (PRIVATE (a_this)->tknzr, a_offset, a_eof) + +/** + *Reads a byte from the topmost parser input + *steam. + *If it fails, goto the "error" label. + *@param a_this the current instance of #CRParser. + *@param a_byte_ptr the guchar * where to put the read char. + */ +#define READ_NEXT_BYTE(a_this, a_byte_ptr) \ +status = cr_tknzr_read_byte (PRIVATE (a_this)->tknzr, a_byte_ptr) ; \ +CHECK_PARSING_STATUS (status, TRUE) ; + +/** + *Skips a given number of byte in the topmost + *parser input. Don't update line and column number. + *In case of error, jumps to the "error:" label + *of the surrounding function. + *@param a_parser the current instance of #CRParser. + *@param a_nb_bytes the number of bytes to skip. + */ +#define SKIP_BYTES(a_this, a_nb_bytes) \ +status = cr_tknzr_seek_index (PRIVATE (a_this)->tknzr, \ + CR_SEEK_CUR, a_nb_bytes) ; \ +CHECK_PARSING_STATUS (status, TRUE) ; + +/** + *Skip utf8 encoded characters. + *Updates line and column numbers. + *@param a_parser the current instance of #CRParser. + *@param a_nb_chars the number of chars to skip. Must be of + *type glong. + */ +#define SKIP_CHARS(a_parser, a_nb_chars) \ +{ \ +glong nb_chars = a_nb_chars ; \ +status = cr_tknzr_consume_chars \ + (PRIVATE (a_parser)->tknzr,0, &nb_chars) ; \ +CHECK_PARSING_STATUS (status, TRUE) ; \ +} + +/** + *Tests the condition and if it is false, sets + *status to "CR_PARSING_ERROR" and goto the 'error' + *label. + *@param condition the condition to test. + */ +#define ENSURE_PARSING_COND(condition) \ +if (! (condition)) {status = CR_PARSING_ERROR; goto error ;} + +#define ENSURE_PARSING_COND_ERR(a_this, a_condition, \ + a_err_msg, a_err_status) \ +if (! (a_condition)) \ +{ \ + status = CR_PARSING_ERROR; \ + cr_parser_push_error (a_this, a_err_msg, a_err_status) ; \ + goto error ; \ +} + +#define GET_NEXT_TOKEN(a_this, a_token_ptr) \ +status = cr_tknzr_get_next_token (PRIVATE (a_this)->tknzr, \ + a_token_ptr) ; \ +ENSURE_PARSING_COND (status == CR_OK) ; + +#ifdef WITH_UNICODE_ESCAPE_AND_RANGE +static enum CRStatus cr_parser_parse_unicode_escape (CRParser * a_this, + guint32 * a_unicode); +static enum CRStatus cr_parser_parse_escape (CRParser * a_this, + guint32 * a_esc_code); + +static enum CRStatus cr_parser_parse_unicode_range (CRParser * a_this, + CRString ** a_inf, + CRString ** a_sup); +#endif + +static enum CRStatus cr_parser_parse_stylesheet_core (CRParser * a_this); + +static enum CRStatus cr_parser_parse_atrule_core (CRParser * a_this); + +static enum CRStatus cr_parser_parse_ruleset_core (CRParser * a_this); + +static enum CRStatus cr_parser_parse_selector_core (CRParser * a_this); + +static enum CRStatus cr_parser_parse_declaration_core (CRParser * a_this); + +static enum CRStatus cr_parser_parse_any_core (CRParser * a_this, + guint n_calls); + +static enum CRStatus cr_parser_parse_block_core (CRParser * a_this, + guint n_calls); + +static enum CRStatus cr_parser_parse_value_core (CRParser * a_this); + +static enum CRStatus cr_parser_parse_string (CRParser * a_this, + CRString ** a_str); + +static enum CRStatus cr_parser_parse_ident (CRParser * a_this, + CRString ** a_str); + +static enum CRStatus cr_parser_parse_uri (CRParser * a_this, + CRString ** a_str); + +static enum CRStatus cr_parser_parse_function (CRParser * a_this, + CRString ** a_func_name, + CRTerm ** a_expr); +static enum CRStatus cr_parser_parse_property (CRParser * a_this, + CRString ** a_property); + +static enum CRStatus cr_parser_parse_attribute_selector (CRParser * a_this, + CRAttrSel ** a_sel); + +static enum CRStatus cr_parser_parse_simple_selector (CRParser * a_this, + CRSimpleSel ** a_sel); + +static enum CRStatus cr_parser_parse_simple_sels (CRParser * a_this, + CRSimpleSel ** a_sel); + +static CRParserError *cr_parser_error_new (const guchar * a_msg, + enum CRStatus); + +static void cr_parser_error_set_msg (CRParserError * a_this, + const guchar * a_msg); + +static void cr_parser_error_dump (CRParserError * a_this); + +static void cr_parser_error_set_status (CRParserError * a_this, + enum CRStatus a_status); + +static void cr_parser_error_set_pos (CRParserError * a_this, + glong a_line, + glong a_column, glong a_byte_num); +static void + cr_parser_error_destroy (CRParserError * a_this); + +static enum CRStatus cr_parser_push_error (CRParser * a_this, + const guchar * a_msg, + enum CRStatus a_status); + +static enum CRStatus cr_parser_dump_err_stack (CRParser * a_this, + gboolean a_clear_errs); +static enum CRStatus + cr_parser_clear_errors (CRParser * a_this); + +/***************************** + *error managemet methods + *****************************/ + +/** + *Constructor of #CRParserError class. + *@param a_msg the brute error message. + *@param a_status the error status. + *@return the newly built instance of #CRParserError. + */ +static CRParserError * +cr_parser_error_new (const guchar * a_msg, enum CRStatus a_status) +{ + CRParserError *result = NULL; + + result = g_try_malloc (sizeof (CRParserError)); + + if (result == NULL) { + cr_utils_trace_info ("Out of memory"); + return NULL; + } + + memset (result, 0, sizeof (CRParserError)); + + cr_parser_error_set_msg (result, a_msg); + cr_parser_error_set_status (result, a_status); + + return result; +} + +/** + *Sets the message associated to this instance of #CRError. + *@param a_this the current instance of #CRParserError. + *@param a_msg the new message. + */ +static void +cr_parser_error_set_msg (CRParserError * a_this, const guchar * a_msg) +{ + g_return_if_fail (a_this); + + if (a_this->msg) { + g_free (a_this->msg); + } + + a_this->msg = (guchar *) g_strdup ((const gchar *) a_msg); +} + +/** + *Sets the error status. + *@param a_this the current instance of #CRParserError. + *@param a_status the new error status. + * + */ +static void +cr_parser_error_set_status (CRParserError * a_this, enum CRStatus a_status) +{ + g_return_if_fail (a_this); + + a_this->status = a_status; +} + +/** + *Sets the position of the parser error. + *@param a_this the current instance of #CRParserError. + *@param a_line the line number. + *@param a_column the column number. + *@param a_byte_num the byte number. + */ +static void +cr_parser_error_set_pos (CRParserError * a_this, + glong a_line, glong a_column, glong a_byte_num) +{ + g_return_if_fail (a_this); + + a_this->line = a_line; + a_this->column = a_column; + a_this->byte_num = a_byte_num; +} + +static void +cr_parser_error_dump (CRParserError * a_this) +{ + g_return_if_fail (a_this); + + g_printerr ("parsing error: %ld:%ld:", a_this->line, a_this->column); + + g_printerr ("%s\n", a_this->msg); +} + +/** + *The destructor of #CRParserError. + *@param a_this the current instance of #CRParserError. + */ +static void +cr_parser_error_destroy (CRParserError * a_this) +{ + g_return_if_fail (a_this); + + if (a_this->msg) { + g_free (a_this->msg); + a_this->msg = NULL; + } + + g_free (a_this); +} + +/** + *Pushes an error on the parser error stack. + *@param a_this the current instance of #CRParser. + *@param a_msg the error message. + *@param a_status the error status. + *@return CR_OK upon successful completion, an error code otherwise. + */ +static enum CRStatus +cr_parser_push_error (CRParser * a_this, + const guchar * a_msg, enum CRStatus a_status) +{ + enum CRStatus status = CR_OK; + + CRParserError *error = NULL; + CRInputPos pos; + + g_return_val_if_fail (a_this && PRIVATE (a_this) + && a_msg, CR_BAD_PARAM_ERROR); + + error = cr_parser_error_new (a_msg, a_status); + + g_return_val_if_fail (error, CR_ERROR); + + RECORD_INITIAL_POS (a_this, &pos); + + cr_parser_error_set_pos + (error, pos.line, pos.col, pos.next_byte_index - 1); + + PRIVATE (a_this)->err_stack = + g_list_prepend (PRIVATE (a_this)->err_stack, error); + + if (PRIVATE (a_this)->err_stack == NULL) + goto error; + + return CR_OK; + + error: + + if (error) { + cr_parser_error_destroy (error); + error = NULL; + } + + return status; +} + +/** + *Dumps the error stack on stdout. + *@param a_this the current instance of #CRParser. + *@param a_clear_errs whether to clear the error stack + *after the dump or not. + *@return CR_OK upon successful completion, an error code + *otherwise. + */ +static enum CRStatus +cr_parser_dump_err_stack (CRParser * a_this, gboolean a_clear_errs) +{ + GList *cur = NULL; + + g_return_val_if_fail (a_this && PRIVATE (a_this), CR_BAD_PARAM_ERROR); + + if (PRIVATE (a_this)->err_stack == NULL) + return CR_OK; + + for (cur = PRIVATE (a_this)->err_stack; cur; cur = cur->next) { + cr_parser_error_dump ((CRParserError *) cur->data); + } + + if (a_clear_errs == TRUE) { + cr_parser_clear_errors (a_this); + } + + return CR_OK; +} + +/** + *Clears all the errors contained in the parser error stack. + *Frees all the errors, and the stack that contains'em. + *@param a_this the current instance of #CRParser. + */ +static enum CRStatus +cr_parser_clear_errors (CRParser * a_this) +{ + GList *cur = NULL; + + g_return_val_if_fail (a_this && PRIVATE (a_this), CR_BAD_PARAM_ERROR); + + for (cur = PRIVATE (a_this)->err_stack; cur; cur = cur->next) { + if (cur->data) { + cr_parser_error_destroy ((CRParserError *) + cur->data); + } + } + + if (PRIVATE (a_this)->err_stack) { + g_list_free (PRIVATE (a_this)->err_stack); + PRIVATE (a_this)->err_stack = NULL; + } + + return CR_OK; +} + +/** + * cr_parser_try_to_skip_spaces_and_comments: + *@a_this: the current instance of #CRParser. + * + *Same as cr_parser_try_to_skip_spaces() but this one skips + *spaces and comments. + * + *Returns CR_OK upon successful completion, an error code otherwise. + */ +enum CRStatus +cr_parser_try_to_skip_spaces_and_comments (CRParser * a_this) +{ + enum CRStatus status = CR_ERROR; + CRToken *token = NULL; + + g_return_val_if_fail (a_this && PRIVATE (a_this) + && PRIVATE (a_this)->tknzr, CR_BAD_PARAM_ERROR); + do { + if (token) { + cr_token_destroy (token); + token = NULL; + } + + status = cr_tknzr_get_next_token (PRIVATE (a_this)->tknzr, + &token); + if (status != CR_OK) + goto error; + } + while ((token != NULL) + && (token->type == COMMENT_TK || token->type == S_TK)); + + cr_tknzr_unget_token (PRIVATE (a_this)->tknzr, token); + + return status; + + error: + + if (token) { + cr_token_destroy (token); + token = NULL; + } + + return status; +} + +/*************************************** + *End of Parser input handling routines + ***************************************/ + + +/************************************* + *Non trivial terminal productions + *parsing routines + *************************************/ + +/** + *Parses a css stylesheet following the core css grammar. + *This is mainly done for test purposes. + *During the parsing, no callback is called. This is just + *to validate that the stylesheet is well formed according to the + *css core syntax. + *stylesheet : [ CDO | CDC | S | statement ]*; + *@param a_this the current instance of #CRParser. + *@return CR_OK upon successful completion, an error code otherwise. + */ +static enum CRStatus +cr_parser_parse_stylesheet_core (CRParser * a_this) +{ + CRToken *token = NULL; + CRInputPos init_pos; + enum CRStatus status = CR_ERROR; + + g_return_val_if_fail (a_this && PRIVATE (a_this), CR_BAD_PARAM_ERROR); + + RECORD_INITIAL_POS (a_this, &init_pos); + + continue_parsing: + + if (token) { + cr_token_destroy (token); + token = NULL; + } + + cr_parser_try_to_skip_spaces_and_comments (a_this); + status = cr_tknzr_get_next_token (PRIVATE (a_this)->tknzr, &token); + if (status == CR_END_OF_INPUT_ERROR) { + status = CR_OK; + goto done; + } else if (status != CR_OK) { + goto error; + } + + switch (token->type) { + + case CDO_TK: + case CDC_TK: + goto continue_parsing; + break; + default: + status = cr_tknzr_unget_token (PRIVATE (a_this)->tknzr, + token); + CHECK_PARSING_STATUS (status, TRUE); + token = NULL; + status = cr_parser_parse_statement_core (a_this); + cr_parser_clear_errors (a_this); + if (status == CR_OK) { + goto continue_parsing; + } else if (status == CR_END_OF_INPUT_ERROR) { + goto done; + } else { + goto error; + } + } + + done: + if (token) { + cr_token_destroy (token); + token = NULL; + } + + cr_parser_clear_errors (a_this); + return CR_OK; + + error: + cr_parser_push_error + (a_this, (const guchar *) "could not recognize next production", CR_ERROR); + + cr_parser_dump_err_stack (a_this, TRUE); + + if (token) { + cr_token_destroy (token); + token = NULL; + } + + cr_tknzr_set_cur_pos (PRIVATE (a_this)->tknzr, &init_pos); + + return status; +} + +/** + *Parses an at-rule as defined by the css core grammar + *in chapter 4.1 in the css2 spec. + *at-rule : ATKEYWORD S* any* [ block | ';' S* ]; + *@param a_this the current instance of #CRParser. + *@return CR_OK upon successful completion, an error code + *otherwise. + */ +static enum CRStatus +cr_parser_parse_atrule_core (CRParser * a_this) +{ + CRToken *token = NULL; + CRInputPos init_pos; + enum CRStatus status = CR_ERROR; + + g_return_val_if_fail (a_this && PRIVATE (a_this), CR_BAD_PARAM_ERROR); + + RECORD_INITIAL_POS (a_this, &init_pos); + + status = cr_tknzr_get_next_token (PRIVATE (a_this)->tknzr, + &token); + ENSURE_PARSING_COND (status == CR_OK + && token + && + (token->type == ATKEYWORD_TK + || token->type == IMPORT_SYM_TK + || token->type == PAGE_SYM_TK + || token->type == MEDIA_SYM_TK + || token->type == FONT_FACE_SYM_TK + || token->type == CHARSET_SYM_TK)); + + cr_token_destroy (token); + token = NULL; + + cr_parser_try_to_skip_spaces_and_comments (a_this); + + do { + status = cr_parser_parse_any_core (a_this, 0); + } while (status == CR_OK); + + status = cr_tknzr_get_next_token (PRIVATE (a_this)->tknzr, + &token); + ENSURE_PARSING_COND (status == CR_OK && token); + + if (token->type == CBO_TK) { + cr_tknzr_unget_token (PRIVATE (a_this)->tknzr, + token); + token = NULL; + status = cr_parser_parse_block_core (a_this, 0); + CHECK_PARSING_STATUS (status, + FALSE); + goto done; + } else if (token->type == SEMICOLON_TK) { + goto done; + } else { + status = CR_PARSING_ERROR ; + goto error; + } + + done: + if (token) { + cr_token_destroy (token); + token = NULL; + } + return CR_OK; + + error: + if (token) { + cr_token_destroy (token); + token = NULL; + } + cr_tknzr_set_cur_pos (PRIVATE (a_this)->tknzr, + &init_pos); + return status; +} + +/** + *Parses a ruleset as defined by the css core grammar in chapter + *4.1 of the css2 spec. + *ruleset ::= selector? '{' S* declaration? [ ';' S* declaration? ]* '}' S*; + *@param a_this the current instance of #CRParser. + *@return CR_OK upon successful completion, an error code otherwise. + */ +static enum CRStatus +cr_parser_parse_ruleset_core (CRParser * a_this) +{ + CRToken *token = NULL; + CRInputPos init_pos; + enum CRStatus status = CR_ERROR; + + g_return_val_if_fail (a_this && PRIVATE (a_this), CR_BAD_PARAM_ERROR); + RECORD_INITIAL_POS (a_this, &init_pos); + + status = cr_parser_parse_selector_core (a_this); + + ENSURE_PARSING_COND (status == CR_OK + || status == CR_PARSING_ERROR + || status == CR_END_OF_INPUT_ERROR); + + status = cr_tknzr_get_next_token (PRIVATE (a_this)->tknzr, &token); + ENSURE_PARSING_COND (status == CR_OK && token + && token->type == CBO_TK); + cr_token_destroy (token); + token = NULL; + + cr_parser_try_to_skip_spaces_and_comments (a_this); + status = cr_parser_parse_declaration_core (a_this); + + parse_declaration_list: + if (token) { + cr_token_destroy (token); + token = NULL; + } + + status = cr_tknzr_get_next_token (PRIVATE (a_this)->tknzr, &token); + ENSURE_PARSING_COND (status == CR_OK && token); + if (token->type == CBC_TK) { + goto done; + } + + ENSURE_PARSING_COND (status == CR_OK + && token && token->type == SEMICOLON_TK); + + cr_token_destroy (token); + token = NULL; + cr_parser_try_to_skip_spaces_and_comments (a_this); + status = cr_parser_parse_declaration_core (a_this); + cr_parser_clear_errors (a_this); + ENSURE_PARSING_COND (status == CR_OK || status == CR_PARSING_ERROR); + status = cr_tknzr_get_next_token (PRIVATE (a_this)->tknzr, &token); + ENSURE_PARSING_COND (status == CR_OK && token); + if (token->type == CBC_TK) { + cr_token_destroy (token); + token = NULL; + cr_parser_try_to_skip_spaces_and_comments (a_this); + goto done; + } else { + status = cr_tknzr_unget_token (PRIVATE (a_this)->tknzr, + token); + token = NULL; + goto parse_declaration_list; + } + + done: + if (token) { + cr_token_destroy (token); + token = NULL; + } + + if (status == CR_OK) { + return CR_OK; + } + + error: + if (token) { + cr_token_destroy (token); + token = NULL; + } + + cr_tknzr_set_cur_pos (PRIVATE (a_this)->tknzr, &init_pos); + + return status; +} + +/** + *Parses a "selector" as specified by the css core + *grammar. + *selector : any+; + *@param a_this the current instance of #CRParser. + *@return CR_OK upon successful completion, an error code + *otherwise. + */ +static enum CRStatus +cr_parser_parse_selector_core (CRParser * a_this) +{ + CRToken *token = NULL; + CRInputPos init_pos; + enum CRStatus status = CR_ERROR; + + g_return_val_if_fail (a_this && PRIVATE (a_this), CR_BAD_PARAM_ERROR); + + RECORD_INITIAL_POS (a_this, &init_pos); + + status = cr_parser_parse_any_core (a_this, 0); + CHECK_PARSING_STATUS (status, FALSE); + + do { + status = cr_parser_parse_any_core (a_this, 0); + + } while (status == CR_OK); + + return CR_OK; + + error: + if (token) { + cr_token_destroy (token); + token = NULL; + } + + cr_tknzr_set_cur_pos (PRIVATE (a_this)->tknzr, &init_pos); + + return status; +} + +/** + *Parses a "block" as defined in the css core grammar + *in chapter 4.1 of the css2 spec. + *block ::= '{' S* [ any | block | ATKEYWORD S* | ';' ]* '}' S*; + *@param a_this the current instance of #CRParser. + *@param n_calls used to limit recursion depth + *FIXME: code this function. + */ +static enum CRStatus +cr_parser_parse_block_core (CRParser * a_this, + guint n_calls) +{ + CRToken *token = NULL; + CRInputPos init_pos; + enum CRStatus status = CR_ERROR; + + g_return_val_if_fail (a_this && PRIVATE (a_this), CR_BAD_PARAM_ERROR); + + if (n_calls > RECURSIVE_CALLERS_LIMIT) + return CR_ERROR; + + RECORD_INITIAL_POS (a_this, &init_pos); + + status = cr_tknzr_get_next_token (PRIVATE (a_this)->tknzr, &token); + ENSURE_PARSING_COND (status == CR_OK && token + && token->type == CBO_TK); + + parse_block_content: + + if (token) { + cr_token_destroy (token); + token = NULL; + } + + cr_parser_try_to_skip_spaces_and_comments (a_this); + + status = cr_tknzr_get_next_token (PRIVATE (a_this)->tknzr, &token); + ENSURE_PARSING_COND (status == CR_OK && token); + + if (token->type == CBC_TK) { + cr_parser_try_to_skip_spaces_and_comments (a_this); + goto done; + } else if (token->type == SEMICOLON_TK) { + goto parse_block_content; + } else if (token->type == ATKEYWORD_TK) { + cr_parser_try_to_skip_spaces_and_comments (a_this); + goto parse_block_content; + } else if (token->type == CBO_TK) { + cr_tknzr_unget_token (PRIVATE (a_this)->tknzr, token); + token = NULL; + status = cr_parser_parse_block_core (a_this, n_calls + 1); + CHECK_PARSING_STATUS (status, FALSE); + goto parse_block_content; + } else { + cr_tknzr_unget_token (PRIVATE (a_this)->tknzr, token); + token = NULL; + status = cr_parser_parse_any_core (a_this, n_calls + 1); + CHECK_PARSING_STATUS (status, FALSE); + goto parse_block_content; + } + + done: + if (token) { + cr_token_destroy (token); + token = NULL; + } + + if (status == CR_OK) + return CR_OK; + + error: + if (token) { + cr_token_destroy (token); + token = NULL; + } + + cr_tknzr_set_cur_pos (PRIVATE (a_this)->tknzr, &init_pos); + + return status; +} + +static enum CRStatus +cr_parser_parse_declaration_core (CRParser * a_this) +{ + CRToken *token = NULL; + CRInputPos init_pos; + enum CRStatus status = CR_ERROR; + CRString *prop = NULL; + + g_return_val_if_fail (a_this && PRIVATE (a_this), CR_BAD_PARAM_ERROR); + + RECORD_INITIAL_POS (a_this, &init_pos); + + status = cr_parser_parse_property (a_this, &prop); + CHECK_PARSING_STATUS (status, FALSE); + cr_parser_clear_errors (a_this); + ENSURE_PARSING_COND (status == CR_OK && prop); + cr_string_destroy (prop); + prop = NULL; + + status = cr_tknzr_get_next_token (PRIVATE (a_this)->tknzr, &token); + ENSURE_PARSING_COND (status == CR_OK + && token + && token->type == DELIM_TK + && token->u.unichar == ':'); + cr_token_destroy (token); + token = NULL; + cr_parser_try_to_skip_spaces_and_comments (a_this); + status = cr_parser_parse_value_core (a_this); + CHECK_PARSING_STATUS (status, FALSE); + + return CR_OK; + + error: + + if (prop) { + cr_string_destroy (prop); + prop = NULL; + } + + if (token) { + cr_token_destroy (token); + token = NULL; + } + + cr_tknzr_set_cur_pos (PRIVATE (a_this)->tknzr, &init_pos); + + return status; +} + +/** + *Parses a "value" production as defined by the css core grammar + *in chapter 4.1. + *value ::= [ any | block | ATKEYWORD S* ]+; + *@param a_this the current instance of #CRParser. + *@return CR_OK upon successful completion, an error code otherwise. + */ +static enum CRStatus +cr_parser_parse_value_core (CRParser * a_this) +{ + CRToken *token = NULL; + CRInputPos init_pos; + enum CRStatus status = CR_ERROR; + glong ref = 0; + + g_return_val_if_fail (a_this && PRIVATE (a_this), CR_BAD_PARAM_ERROR); + RECORD_INITIAL_POS (a_this, &init_pos); + + continue_parsing: + + if (token) { + cr_token_destroy (token); + token = NULL; + } + + status = cr_tknzr_get_next_token (PRIVATE (a_this)->tknzr, &token); + ENSURE_PARSING_COND (status == CR_OK && token); + + switch (token->type) { + case CBO_TK: + status = cr_tknzr_unget_token (PRIVATE (a_this)->tknzr, + token); + token = NULL; + status = cr_parser_parse_block_core (a_this, 0); + CHECK_PARSING_STATUS (status, FALSE); + ref++; + goto continue_parsing; + + case ATKEYWORD_TK: + cr_parser_try_to_skip_spaces_and_comments (a_this); + ref++; + goto continue_parsing; + + default: + status = cr_tknzr_unget_token (PRIVATE (a_this)->tknzr, + token); + token = NULL; + status = cr_parser_parse_any_core (a_this, 0); + if (status == CR_OK) { + ref++; + goto continue_parsing; + } else if (status == CR_PARSING_ERROR) { + status = CR_OK; + goto done; + } else { + goto error; + } + } + + done: + if (token) { + cr_token_destroy (token); + token = NULL; + } + + if (status == CR_OK && ref) + return CR_OK; + error: + if (token) { + cr_token_destroy (token); + token = NULL; + } + + cr_tknzr_set_cur_pos (PRIVATE (a_this)->tknzr, &init_pos); + + return status; +} + +/** + *Parses an "any" as defined by the css core grammar in the + *css2 spec in chapter 4.1. + *any ::= [ IDENT | NUMBER | PERCENTAGE | DIMENSION | STRING + * | DELIM | URI | HASH | UNICODE-RANGE | INCLUDES + * | FUNCTION | DASHMATCH | '(' any* ')' | '[' any* ']' ] S*; + * + *@param a_this the current instance of #CRParser. + *@param n_calls used to limit recursion depth + *@return CR_OK upon successful completion, an error code otherwise. + */ +static enum CRStatus +cr_parser_parse_any_core (CRParser * a_this, + guint n_calls) +{ + CRToken *token1 = NULL, + *token2 = NULL; + CRInputPos init_pos; + enum CRStatus status = CR_ERROR; + + g_return_val_if_fail (a_this, CR_BAD_PARAM_ERROR); + + if (n_calls > RECURSIVE_CALLERS_LIMIT) + return CR_ERROR; + + RECORD_INITIAL_POS (a_this, &init_pos); + + status = cr_tknzr_get_next_token (PRIVATE (a_this)->tknzr, &token1); + + ENSURE_PARSING_COND (status == CR_OK && token1); + + switch (token1->type) { + case IDENT_TK: + case NUMBER_TK: + case RGB_TK: + case PERCENTAGE_TK: + case DIMEN_TK: + case EMS_TK: + case EXS_TK: + case LENGTH_TK: + case ANGLE_TK: + case FREQ_TK: + case TIME_TK: + case STRING_TK: + case DELIM_TK: + case URI_TK: + case HASH_TK: + case UNICODERANGE_TK: + case INCLUDES_TK: + case DASHMATCH_TK: + case S_TK: + case COMMENT_TK: + case IMPORTANT_SYM_TK: + status = CR_OK; + break; + case FUNCTION_TK: + /* + *this case isn't specified by the spec but it + *does happen. So we have to handle it. + *We must consider function with parameters. + *We consider parameter as being an "any*" production. + */ + do { + status = cr_parser_parse_any_core (a_this, n_calls + 1); + } while (status == CR_OK); + + ENSURE_PARSING_COND (status == CR_PARSING_ERROR); + status = cr_tknzr_get_next_token (PRIVATE (a_this)->tknzr, + &token2); + ENSURE_PARSING_COND (status == CR_OK + && token2 && token2->type == PC_TK); + break; + case PO_TK: + status = cr_tknzr_get_next_token (PRIVATE (a_this)->tknzr, + &token2); + ENSURE_PARSING_COND (status == CR_OK && token2); + + if (token2->type == PC_TK) { + cr_token_destroy (token2); + token2 = NULL; + goto done; + } else { + status = cr_tknzr_unget_token + (PRIVATE (a_this)->tknzr, token2); + token2 = NULL; + } + + do { + status = cr_parser_parse_any_core (a_this, n_calls + 1); + } while (status == CR_OK); + + ENSURE_PARSING_COND (status == CR_PARSING_ERROR); + + status = cr_tknzr_get_next_token (PRIVATE (a_this)->tknzr, + &token2); + ENSURE_PARSING_COND (status == CR_OK + && token2 && token2->type == PC_TK); + status = CR_OK; + break; + + case BO_TK: + status = cr_tknzr_get_next_token (PRIVATE (a_this)->tknzr, + &token2); + ENSURE_PARSING_COND (status == CR_OK && token2); + + if (token2->type == BC_TK) { + cr_token_destroy (token2); + token2 = NULL; + goto done; + } else { + status = cr_tknzr_unget_token + (PRIVATE (a_this)->tknzr, token2); + token2 = NULL; + } + + do { + status = cr_parser_parse_any_core (a_this, n_calls + 1); + } while (status == CR_OK); + + ENSURE_PARSING_COND (status == CR_PARSING_ERROR); + + status = cr_tknzr_get_next_token (PRIVATE (a_this)->tknzr, + &token2); + ENSURE_PARSING_COND (status == CR_OK + && token2 && token2->type == BC_TK); + status = CR_OK; + break; + default: + status = CR_PARSING_ERROR; + goto error; + } + + done: + if (token1) { + cr_token_destroy (token1); + token1 = NULL; + } + + if (token2) { + cr_token_destroy (token2); + token2 = NULL; + } + + return CR_OK; + + error: + + if (token1) { + cr_token_destroy (token1); + token1 = NULL; + } + + if (token2) { + cr_token_destroy (token2); + token2 = NULL; + } + + cr_tknzr_set_cur_pos (PRIVATE (a_this)->tknzr, &init_pos); + return status; +} + +/** + *Parses an attribute selector as defined in the css2 spec in + *appendix D.1: + *attrib ::= '[' S* IDENT S* [ [ '=' | INCLUDES | DASHMATCH ] S* + * [ IDENT | STRING ] S* ]? ']' + * + *@param a_this the "this pointer" of the current instance of + *#CRParser . + *@param a_sel out parameter. The successfully parsed attribute selector. + *@return CR_OK upon successful completion, an error code otherwise. + */ +static enum CRStatus +cr_parser_parse_attribute_selector (CRParser * a_this, + CRAttrSel ** a_sel) +{ + enum CRStatus status = CR_OK; + CRInputPos init_pos; + CRToken *token = NULL; + CRAttrSel *result = NULL; + CRParsingLocation location = {0} ; + + g_return_val_if_fail (a_this && a_sel, CR_BAD_PARAM_ERROR); + + RECORD_INITIAL_POS (a_this, &init_pos); + + status = cr_tknzr_get_next_token (PRIVATE (a_this)->tknzr, &token); + ENSURE_PARSING_COND (status == CR_OK && token + && token->type == BO_TK); + cr_parsing_location_copy + (&location, &token->location) ; + cr_token_destroy (token); + token = NULL; + + cr_parser_try_to_skip_spaces_and_comments (a_this); + + result = cr_attr_sel_new (); + if (!result) { + cr_utils_trace_info ("result failed") ; + status = CR_OUT_OF_MEMORY_ERROR ; + goto error ; + } + cr_parsing_location_copy (&result->location, + &location) ; + status = cr_tknzr_get_next_token (PRIVATE (a_this)->tknzr, &token); + ENSURE_PARSING_COND (status == CR_OK + && token && token->type == IDENT_TK); + + result->name = token->u.str; + token->u.str = NULL; + cr_token_destroy (token); + token = NULL; + + cr_parser_try_to_skip_spaces_and_comments (a_this); + + status = cr_tknzr_get_next_token (PRIVATE (a_this)->tknzr, &token); + ENSURE_PARSING_COND (status == CR_OK && token); + + if (token->type == INCLUDES_TK) { + result->match_way = INCLUDES; + goto parse_right_part; + } else if (token->type == DASHMATCH_TK) { + result->match_way = DASHMATCH; + goto parse_right_part; + } else if (token->type == DELIM_TK && token->u.unichar == '=') { + result->match_way = EQUALS; + goto parse_right_part; + } else if (token->type == BC_TK) { + result->match_way = SET; + goto done; + } + + parse_right_part: + + if (token) { + cr_token_destroy (token); + token = NULL; + } + + cr_parser_try_to_skip_spaces_and_comments (a_this); + + status = cr_tknzr_get_next_token (PRIVATE (a_this)->tknzr, &token); + ENSURE_PARSING_COND (status == CR_OK && token); + + if (token->type == IDENT_TK) { + result->value = token->u.str; + token->u.str = NULL; + } else if (token->type == STRING_TK) { + result->value = token->u.str; + token->u.str = NULL; + } else { + status = CR_PARSING_ERROR; + goto error; + } + + if (token) { + cr_token_destroy (token); + token = NULL; + } + + cr_parser_try_to_skip_spaces_and_comments (a_this); + + status = cr_tknzr_get_next_token (PRIVATE (a_this)->tknzr, &token); + + ENSURE_PARSING_COND (status == CR_OK && token + && token->type == BC_TK); + done: + if (token) { + cr_token_destroy (token); + token = NULL; + } + + if (*a_sel) { + status = cr_attr_sel_append_attr_sel (*a_sel, result); + CHECK_PARSING_STATUS (status, FALSE); + } else { + *a_sel = result; + } + + cr_parser_clear_errors (a_this); + return CR_OK; + + error: + + if (result) { + cr_attr_sel_destroy (result); + result = NULL; + } + + if (token) { + cr_token_destroy (token); + token = NULL; + } + + cr_tknzr_set_cur_pos (PRIVATE (a_this)->tknzr, &init_pos); + + return status; +} + +/** + *Parses a "property" as specified by the css2 spec at [4.1.1]: + *property : IDENT S*; + * + *@param a_this the "this pointer" of the current instance of #CRParser. + *@param GString a_property out parameter. The parsed property without the + *trailing spaces. If *a_property is NULL, this function allocates a + *new instance of GString and set it content to the parsed property. + *If not, the property is just appended to a_property's previous content. + *In both cases, it is up to the caller to free a_property. + *@return CR_OK upon successful completion, CR_PARSING_ERROR if the + *next construction was not a "property", or an error code. + */ +static enum CRStatus +cr_parser_parse_property (CRParser * a_this, + CRString ** a_property) +{ + enum CRStatus status = CR_OK; + CRInputPos init_pos; + + g_return_val_if_fail (a_this && PRIVATE (a_this) + && PRIVATE (a_this)->tknzr + && a_property, + CR_BAD_PARAM_ERROR); + + RECORD_INITIAL_POS (a_this, &init_pos); + + status = cr_parser_parse_ident (a_this, a_property); + CHECK_PARSING_STATUS (status, TRUE); + + cr_parser_try_to_skip_spaces_and_comments (a_this); + + cr_parser_clear_errors (a_this); + return CR_OK; + + error: + + cr_tknzr_set_cur_pos (PRIVATE (a_this)->tknzr, &init_pos); + + return status; +} + +/** + * cr_parser_parse_term: + *@a_term: out parameter. The successfully parsed term. + * + *Parses a "term" as defined in the css2 spec, appendix D.1: + *term ::= unary_operator? [NUMBER S* | PERCENTAGE S* | LENGTH S* | + *EMS S* | EXS S* | ANGLE S* | TIME S* | FREQ S* | function ] | + *STRING S* | IDENT S* | URI S* | RGB S* | UNICODERANGE S* | hexcolor + * + *TODO: handle parsing of 'RGB' + * + *Returns CR_OK upon successful completion, an error code otherwise. + */ +enum CRStatus +cr_parser_parse_term (CRParser * a_this, CRTerm ** a_term) +{ + enum CRStatus status = CR_PARSING_ERROR; + CRInputPos init_pos; + CRTerm *result = NULL; + CRTerm *param = NULL; + CRToken *token = NULL; + CRString *func_name = NULL; + CRParsingLocation location = {0} ; + + g_return_val_if_fail (a_this && a_term, CR_BAD_PARAM_ERROR); + + RECORD_INITIAL_POS (a_this, &init_pos); + + result = cr_term_new (); + + status = cr_tknzr_get_next_token (PRIVATE (a_this)->tknzr, + &token); + if (status != CR_OK || !token) + goto error; + + cr_parsing_location_copy (&location, &token->location) ; + if (token->type == DELIM_TK && token->u.unichar == '+') { + result->unary_op = PLUS_UOP; + cr_token_destroy (token) ; + token = NULL ; + cr_parser_try_to_skip_spaces_and_comments (a_this); + status = cr_tknzr_get_next_token (PRIVATE (a_this)->tknzr, + &token); + if (status != CR_OK || !token) + goto error; + } else if (token->type == DELIM_TK && token->u.unichar == '-') { + result->unary_op = MINUS_UOP; + cr_token_destroy (token) ; + token = NULL ; + cr_parser_try_to_skip_spaces_and_comments (a_this); + status = cr_tknzr_get_next_token (PRIVATE (a_this)->tknzr, + &token); + if (status != CR_OK || !token) + goto error; + } + + if (token->type == EMS_TK + || token->type == EXS_TK + || token->type == LENGTH_TK + || token->type == ANGLE_TK + || token->type == TIME_TK + || token->type == FREQ_TK + || token->type == PERCENTAGE_TK + || token->type == NUMBER_TK) { + status = cr_term_set_number (result, token->u.num); + CHECK_PARSING_STATUS (status, TRUE); + token->u.num = NULL; + status = CR_OK; + } else if (token && token->type == FUNCTION_TK) { + status = cr_tknzr_unget_token (PRIVATE (a_this)->tknzr, + token); + token = NULL; + status = cr_parser_parse_function (a_this, &func_name, + ¶m); + + if (status == CR_OK) { + status = cr_term_set_function (result, + func_name, + param); + CHECK_PARSING_STATUS (status, TRUE); + } + } else if (token && token->type == STRING_TK) { + status = cr_term_set_string (result, + token->u.str); + CHECK_PARSING_STATUS (status, TRUE); + token->u.str = NULL; + } else if (token && token->type == IDENT_TK) { + status = cr_term_set_ident (result, token->u.str); + CHECK_PARSING_STATUS (status, TRUE); + token->u.str = NULL; + } else if (token && token->type == URI_TK) { + status = cr_term_set_uri (result, token->u.str); + CHECK_PARSING_STATUS (status, TRUE); + token->u.str = NULL; + } else if (token && token->type == RGB_TK) { + status = cr_term_set_rgb (result, token->u.rgb); + CHECK_PARSING_STATUS (status, TRUE); + token->u.rgb = NULL; + } else if (token && token->type == UNICODERANGE_TK) { + result->type = TERM_UNICODERANGE; + status = CR_PARSING_ERROR; + } else if (token && token->type == HASH_TK) { + status = cr_term_set_hash (result, token->u.str); + CHECK_PARSING_STATUS (status, TRUE); + token->u.str = NULL; + } else { + status = CR_PARSING_ERROR; + } + + if (status != CR_OK) { + goto error; + } + cr_parsing_location_copy (&result->location, + &location) ; + *a_term = cr_term_append_term (*a_term, result); + + result = NULL; + + cr_parser_try_to_skip_spaces_and_comments (a_this); + + if (token) { + cr_token_destroy (token); + token = NULL; + } + + cr_parser_clear_errors (a_this); + return CR_OK; + + error: + + if (result) { + cr_term_destroy (result); + result = NULL; + } + + if (token) { + cr_token_destroy (token); + token = NULL; + } + + if (param) { + cr_term_destroy (param); + param = NULL; + } + + if (func_name) { + cr_string_destroy (func_name); + func_name = NULL; + } + + cr_tknzr_set_cur_pos (PRIVATE (a_this)->tknzr, &init_pos); + + return status; +} + +/** + * cr_parser_parse_simple_selector: + *@a_this: the "this pointer" of the current instance of #CRParser. + *@a_sel: out parameter. Is set to the successfully parsed simple + *selector. + * + *Parses a "simple_selector" as defined by the css2 spec in appendix D.1 : + *element_name? [ HASH | class | attrib | pseudo ]* S* + *and where pseudo is: + *pseudo ::= ':' [ IDENT | FUNCTION S* IDENT S* ')' ] + * + *Returns CR_OK upon successful completion, an error code otherwise. + */ +static enum CRStatus +cr_parser_parse_simple_selector (CRParser * a_this, CRSimpleSel ** a_sel) +{ + enum CRStatus status = CR_ERROR; + CRInputPos init_pos; + CRToken *token = NULL; + CRSimpleSel *sel = NULL; + CRAdditionalSel *add_sel_list = NULL; + gboolean found_sel = FALSE; + guint32 cur_char = 0; + + g_return_val_if_fail (a_this && a_sel, CR_BAD_PARAM_ERROR); + + RECORD_INITIAL_POS (a_this, &init_pos); + + status = cr_tknzr_get_next_token (PRIVATE (a_this)->tknzr, &token); + if (status != CR_OK) + goto error; + + sel = cr_simple_sel_new (); + ENSURE_PARSING_COND (sel); + + cr_parsing_location_copy + (&sel->location, + &token->location) ; + + if (token && token->type == DELIM_TK + && token->u.unichar == '*') { + sel->type_mask |= UNIVERSAL_SELECTOR; + sel->name = cr_string_new_from_string ("*"); + found_sel = TRUE; + } else if (token && token->type == IDENT_TK) { + sel->name = token->u.str; + sel->type_mask |= TYPE_SELECTOR; + token->u.str = NULL; + found_sel = TRUE; + } else { + status = cr_tknzr_unget_token + (PRIVATE (a_this)->tknzr, + token); + token = NULL; + } + + if (token) { + cr_token_destroy (token); + token = NULL; + } + + cr_parser_try_to_skip_spaces_and_comments (a_this); + + for (;;) { + if (token) { + cr_token_destroy (token); + token = NULL; + } + + status = cr_tknzr_get_next_token + (PRIVATE (a_this)->tknzr, + &token); + if (status != CR_OK) + goto error; + + if (token && token->type == HASH_TK) { + /*we parsed an attribute id */ + CRAdditionalSel *add_sel = NULL; + + add_sel = cr_additional_sel_new_with_type + (ID_ADD_SELECTOR); + + add_sel->content.id_name = token->u.str; + token->u.str = NULL; + + cr_parsing_location_copy + (&add_sel->location, + &token->location) ; + add_sel_list = + cr_additional_sel_append + (add_sel_list, add_sel); + found_sel = TRUE; + } else if (token && (token->type == DELIM_TK) + && (token->u.unichar == '.')) { + cr_token_destroy (token); + token = NULL; + + status = cr_tknzr_get_next_token + (PRIVATE (a_this)->tknzr, &token); + if (status != CR_OK) + goto error; + + if (token && token->type == IDENT_TK) { + CRAdditionalSel *add_sel = NULL; + + add_sel = cr_additional_sel_new_with_type + (CLASS_ADD_SELECTOR); + + add_sel->content.class_name = token->u.str; + token->u.str = NULL; + + add_sel_list = + cr_additional_sel_append + (add_sel_list, add_sel); + found_sel = TRUE; + + cr_parsing_location_copy + (&add_sel->location, + & token->location) ; + } else { + status = CR_PARSING_ERROR; + goto error; + } + } else if (token && token->type == BO_TK) { + CRAttrSel *attr_sel = NULL; + CRAdditionalSel *add_sel = NULL; + + status = cr_tknzr_unget_token + (PRIVATE (a_this)->tknzr, token); + if (status != CR_OK) + goto error; + token = NULL; + + status = cr_parser_parse_attribute_selector + (a_this, &attr_sel); + CHECK_PARSING_STATUS (status, FALSE); + + add_sel = cr_additional_sel_new_with_type + (ATTRIBUTE_ADD_SELECTOR); + + ENSURE_PARSING_COND (add_sel != NULL); + + add_sel->content.attr_sel = attr_sel; + + add_sel_list = + cr_additional_sel_append + (add_sel_list, add_sel); + found_sel = TRUE; + cr_parsing_location_copy + (&add_sel->location, + &attr_sel->location) ; + } else if (token && (token->type == DELIM_TK) + && (token->u.unichar == ':')) { + CRPseudo *pseudo = NULL; + + /*try to parse a pseudo */ + + if (token) { + cr_token_destroy (token); + token = NULL; + } + + pseudo = cr_pseudo_new (); + + status = cr_tknzr_get_next_token + (PRIVATE (a_this)->tknzr, &token); + ENSURE_PARSING_COND (status == CR_OK && token); + + cr_parsing_location_copy + (&pseudo->location, + &token->location) ; + + if (token->type == IDENT_TK) { + pseudo->type = IDENT_PSEUDO; + pseudo->name = token->u.str; + token->u.str = NULL; + found_sel = TRUE; + } else if (token->type == FUNCTION_TK) { + pseudo->name = token->u.str; + token->u.str = NULL; + cr_parser_try_to_skip_spaces_and_comments + (a_this); + status = cr_parser_parse_ident + (a_this, &pseudo->extra); + + ENSURE_PARSING_COND (status == CR_OK); + READ_NEXT_CHAR (a_this, &cur_char); + ENSURE_PARSING_COND (cur_char == ')'); + pseudo->type = FUNCTION_PSEUDO; + found_sel = TRUE; + } else { + status = CR_PARSING_ERROR; + goto error; + } + + if (status == CR_OK) { + CRAdditionalSel *add_sel = NULL; + + add_sel = cr_additional_sel_new_with_type + (PSEUDO_CLASS_ADD_SELECTOR); + + add_sel->content.pseudo = pseudo; + cr_parsing_location_copy + (&add_sel->location, + &pseudo->location) ; + add_sel_list = + cr_additional_sel_append + (add_sel_list, add_sel); + status = CR_OK; + } + } else { + status = cr_tknzr_unget_token + (PRIVATE (a_this)->tknzr, token); + token = NULL; + break; + } + } + + if (status == CR_OK && found_sel == TRUE) { + cr_parser_try_to_skip_spaces_and_comments (a_this); + + sel->add_sel = add_sel_list; + add_sel_list = NULL; + + if (*a_sel == NULL) { + *a_sel = sel; + } else { + cr_simple_sel_append_simple_sel (*a_sel, sel); + } + + sel = NULL; + + if (token) { + cr_token_destroy (token); + token = NULL; + } + + cr_parser_clear_errors (a_this); + return CR_OK; + } else { + status = CR_PARSING_ERROR; + } + + error: + + if (token) { + cr_token_destroy (token); + token = NULL; + } + + if (add_sel_list) { + cr_additional_sel_destroy (add_sel_list); + add_sel_list = NULL; + } + + if (sel) { + cr_simple_sel_destroy (sel); + sel = NULL; + } + + cr_tknzr_set_cur_pos (PRIVATE (a_this)->tknzr, &init_pos); + + return status; + +} + +/** + * cr_parser_parse_simple_sels: + *@a_this: the this pointer of the current instance of #CRParser. + *@a_start: a pointer to the + *first character of the successfully parsed + *string. + *@a_end: a pointer to the last character of the successfully parsed + *string. + * + *Parses a "selector" as defined by the css2 spec in appendix D.1: + *selector ::= simple_selector [ combinator simple_selector ]* + * + *Returns CR_OK upon successful completion, an error code otherwise. + */ +static enum CRStatus +cr_parser_parse_simple_sels (CRParser * a_this, + CRSimpleSel ** a_sel) +{ + enum CRStatus status = CR_ERROR; + CRInputPos init_pos; + CRSimpleSel *sel = NULL; + guint32 cur_char = 0; + + g_return_val_if_fail (a_this + && PRIVATE (a_this) + && a_sel, + CR_BAD_PARAM_ERROR); + + RECORD_INITIAL_POS (a_this, &init_pos); + + status = cr_parser_parse_simple_selector (a_this, &sel); + CHECK_PARSING_STATUS (status, FALSE); + + *a_sel = cr_simple_sel_append_simple_sel (*a_sel, sel); + + for (;;) { + guint32 next_char = 0; + enum Combinator comb = 0; + + sel = NULL; + + PEEK_NEXT_CHAR (a_this, &next_char); + + if (next_char == '+') { + READ_NEXT_CHAR (a_this, &cur_char); + comb = COMB_PLUS; + cr_parser_try_to_skip_spaces_and_comments (a_this); + } else if (next_char == '>') { + READ_NEXT_CHAR (a_this, &cur_char); + comb = COMB_GT; + cr_parser_try_to_skip_spaces_and_comments (a_this); + } else { + comb = COMB_WS; + } + + status = cr_parser_parse_simple_selector (a_this, &sel); + if (status != CR_OK) + break; + + if (comb && sel) { + sel->combinator = comb; + comb = 0; + } + if (sel) { + *a_sel = cr_simple_sel_append_simple_sel (*a_sel, + sel) ; + } + } + cr_parser_clear_errors (a_this); + return CR_OK; + + error: + + cr_tknzr_set_cur_pos (PRIVATE (a_this)->tknzr, &init_pos); + + return status; +} + +/** + * cr_parser_parse_selector: + *@a_this: the current instance of #CRParser. + *@a_selector: the parsed list of comma separated + *selectors. + * + *Parses a comma separated list of selectors. + * + *Returns CR_OK upon successful completion, an error + *code otherwise. + */ +static enum CRStatus +cr_parser_parse_selector (CRParser * a_this, + CRSelector ** a_selector) +{ + enum CRStatus status = CR_OK; + CRInputPos init_pos; + guint32 cur_char = 0, + next_char = 0; + CRSimpleSel *simple_sels = NULL; + CRSelector *selector = NULL; + + g_return_val_if_fail (a_this && a_selector, CR_BAD_PARAM_ERROR); + + RECORD_INITIAL_POS (a_this, &init_pos); + + status = cr_parser_parse_simple_sels (a_this, &simple_sels); + CHECK_PARSING_STATUS (status, FALSE); + + if (simple_sels) { + selector = cr_selector_append_simple_sel + (selector, simple_sels); + if (selector) { + cr_parsing_location_copy + (&selector->location, + &simple_sels->location) ; + } + simple_sels = NULL; + } else { + status = CR_PARSING_ERROR ; + goto error ; + } + + status = cr_tknzr_peek_char (PRIVATE (a_this)->tknzr, + &next_char); + if (status != CR_OK) { + if (status == CR_END_OF_INPUT_ERROR) { + status = CR_OK; + goto okay; + } else { + goto error; + } + } + + if (next_char == ',') { + for (;;) { + simple_sels = NULL; + + status = cr_tknzr_peek_char (PRIVATE (a_this)->tknzr, + &next_char); + if (status != CR_OK) { + if (status == CR_END_OF_INPUT_ERROR) { + status = CR_OK; + break; + } else { + goto error; + } + } + + if (next_char != ',') + break; + + /*consume the ',' char */ + READ_NEXT_CHAR (a_this, &cur_char); + + cr_parser_try_to_skip_spaces_and_comments (a_this); + + status = cr_parser_parse_simple_sels + (a_this, &simple_sels); + + CHECK_PARSING_STATUS (status, FALSE); + + if (simple_sels) { + selector = + cr_selector_append_simple_sel + (selector, simple_sels); + + simple_sels = NULL; + } + } + } + + okay: + cr_parser_try_to_skip_spaces_and_comments (a_this); + + if (!*a_selector) { + *a_selector = selector; + } else { + *a_selector = cr_selector_append (*a_selector, selector); + } + + selector = NULL; + return CR_OK; + + error: + + if (simple_sels) { + cr_simple_sel_destroy (simple_sels); + simple_sels = NULL; + } + + if (selector) { + cr_selector_unref (selector); + selector = NULL; + } + + cr_tknzr_set_cur_pos (PRIVATE (a_this)->tknzr, &init_pos); + + return status; +} + +/** + * cr_parser_parse_function: + *@a_this: the "this pointer" of the current instance of #CRParser. + * + *@a_func_name: out parameter. The parsed function name + *@a_expr: out parameter. The successfully parsed term. + * + *Parses a "function" as defined in css spec at appendix D.1: + *function ::= FUNCTION S* expr ')' S* + *FUNCTION ::= ident'(' + * + *Returns CR_OK upon successful completion, an error code otherwise. + */ +static enum CRStatus +cr_parser_parse_function (CRParser * a_this, + CRString ** a_func_name, + CRTerm ** a_expr) +{ + CRInputPos init_pos; + enum CRStatus status = CR_OK; + CRToken *token = NULL; + CRTerm *expr = NULL; + + g_return_val_if_fail (a_this && PRIVATE (a_this) + && a_func_name, + CR_BAD_PARAM_ERROR); + + RECORD_INITIAL_POS (a_this, &init_pos); + + status = cr_tknzr_get_next_token (PRIVATE (a_this)->tknzr, &token); + if (status != CR_OK) + goto error; + + if (token && token->type == FUNCTION_TK) { + *a_func_name = token->u.str; + token->u.str = NULL; + } else { + status = CR_PARSING_ERROR; + goto error; + } + cr_token_destroy (token); + token = NULL; + + cr_parser_try_to_skip_spaces_and_comments (a_this) ; + + status = cr_parser_parse_expr (a_this, &expr); + + CHECK_PARSING_STATUS (status, FALSE); + + status = cr_tknzr_get_next_token (PRIVATE (a_this)->tknzr, &token); + if (status != CR_OK) + goto error; + + ENSURE_PARSING_COND (token && token->type == PC_TK); + + cr_token_destroy (token); + token = NULL; + + if (expr) { + *a_expr = cr_term_append_term (*a_expr, expr); + expr = NULL; + } + + cr_parser_clear_errors (a_this); + return CR_OK; + + error: + + if (*a_func_name) { + cr_string_destroy (*a_func_name); + *a_func_name = NULL; + } + + if (expr) { + cr_term_destroy (expr); + expr = NULL; + } + + if (token) { + cr_token_destroy (token); + + } + + cr_tknzr_set_cur_pos (PRIVATE (a_this)->tknzr, &init_pos); + + return status; +} + +/** + * cr_parser_parse_uri: + *@a_this: the current instance of #CRParser. + *@a_str: the successfully parsed url. + * + *Parses an uri as defined by the css spec [4.1.1]: + * URI ::= url\({w}{string}{w}\) + * |url\({w}([!#$%&*-~]|{nonascii}|{escape})*{w}\) + * + *Returns CR_OK upon successful completion, an error code otherwise. + */ +static enum CRStatus +cr_parser_parse_uri (CRParser * a_this, CRString ** a_str) +{ + + enum CRStatus status = CR_PARSING_ERROR; + + g_return_val_if_fail (a_this && PRIVATE (a_this) + && PRIVATE (a_this)->tknzr, CR_BAD_PARAM_ERROR); + + status = cr_tknzr_parse_token (PRIVATE (a_this)->tknzr, + URI_TK, NO_ET, a_str, NULL); + return status; +} + +/** + * cr_parser_parse_string: + *@a_this: the current instance of #CRParser. + *@a_start: out parameter. Upon successful completion, + *points to the beginning of the string, points to an undefined value + *otherwise. + *@a_end: out parameter. Upon successful completion, points to + *the beginning of the string, points to an undefined value otherwise. + * + *Parses a string type as defined in css spec [4.1.1]: + * + *string ::= {string1}|{string2} + *string1 ::= \"([\t !#$%&(-~]|\\{nl}|\'|{nonascii}|{escape})*\" + *string2 ::= \'([\t !#$%&(-~]|\\{nl}|\"|{nonascii}|{escape})*\' + * + *Returns CR_OK upon successful completion, an error code otherwise. + */ +static enum CRStatus +cr_parser_parse_string (CRParser * a_this, CRString ** a_str) +{ + enum CRStatus status = CR_OK; + + g_return_val_if_fail (a_this && PRIVATE (a_this) + && PRIVATE (a_this)->tknzr + && a_str, CR_BAD_PARAM_ERROR); + + status = cr_tknzr_parse_token (PRIVATE (a_this)->tknzr, + STRING_TK, NO_ET, a_str, NULL); + return status; +} + +/** + *Parses an "ident" as defined in css spec [4.1.1]: + *ident ::= {nmstart}{nmchar}* + * + *@param a_this the currens instance of #CRParser. + * + *@param a_str a pointer to parsed ident. If *a_str is NULL, + *this function allocates a new instance of #CRString. If not, + *the function just appends the parsed string to the one passed. + *In both cases it is up to the caller to free *a_str. + * + *@return CR_OK upon successful completion, an error code + *otherwise. + */ +static enum CRStatus +cr_parser_parse_ident (CRParser * a_this, CRString ** a_str) +{ + enum CRStatus status = CR_OK; + + g_return_val_if_fail (a_this && PRIVATE (a_this) + && PRIVATE (a_this)->tknzr + && a_str, CR_BAD_PARAM_ERROR); + + status = cr_tknzr_parse_token (PRIVATE (a_this)->tknzr, + IDENT_TK, NO_ET, a_str, NULL); + return status; +} + +/** + *the next rule is ignored as well. This seems to be a bug + *Parses a stylesheet as defined in the css2 spec in appendix D.1: + *stylesheet ::= [ CHARSET_SYM S* STRING S* ';' ]? + * [S|CDO|CDC]* [ import [S|CDO|CDC]* ]* + * [ [ ruleset | media | page | font_face ] [S|CDO|CDC]* ]* + * + *TODO: Finish the code of this function. Think about splitting it into + *smaller functions. + * + *@param a_this the "this pointer" of the current instance of #CRParser. + *@param a_start out parameter. A pointer to the first character of + *the successfully parsed string. + *@param a_end out parameter. A pointer to the first character of + *the successfully parsed string. + * + *@return CR_OK upon successful completion, an error code otherwise. + */ +static enum CRStatus +cr_parser_parse_stylesheet (CRParser * a_this) +{ + enum CRStatus status = CR_OK; + CRInputPos init_pos; + CRToken *token = NULL; + CRString *charset = NULL; + + g_return_val_if_fail (a_this && PRIVATE (a_this) + && PRIVATE (a_this)->tknzr, CR_BAD_PARAM_ERROR); + + RECORD_INITIAL_POS (a_this, &init_pos); + + PRIVATE (a_this)->state = READY_STATE; + + if (PRIVATE (a_this)->sac_handler + && PRIVATE (a_this)->sac_handler->start_document) { + PRIVATE (a_this)->sac_handler->start_document + (PRIVATE (a_this)->sac_handler); + } + + parse_charset: + status = cr_tknzr_get_next_token (PRIVATE (a_this)->tknzr, &token); + + if (status == CR_END_OF_INPUT_ERROR) + goto done; + CHECK_PARSING_STATUS (status, TRUE); + + if (token && token->type == CHARSET_SYM_TK) { + CRParsingLocation location = {0} ; + status = cr_tknzr_unget_token (PRIVATE (a_this)->tknzr, + token); + CHECK_PARSING_STATUS (status, TRUE); + token = NULL; + + status = cr_parser_parse_charset (a_this, + &charset, + &location); + + if (status == CR_OK && charset) { + if (PRIVATE (a_this)->sac_handler + && PRIVATE (a_this)->sac_handler->charset) { + PRIVATE (a_this)->sac_handler->charset + (PRIVATE (a_this)->sac_handler, + charset, &location); + } + } else if (status != CR_END_OF_INPUT_ERROR) { + status = cr_parser_parse_atrule_core (a_this); + CHECK_PARSING_STATUS (status, FALSE); + } + + if (charset) { + cr_string_destroy (charset); + charset = NULL; + } + } else if (token + && (token->type == S_TK + || token->type == COMMENT_TK)) { + status = cr_tknzr_unget_token (PRIVATE (a_this)->tknzr, + token); + token = NULL; + CHECK_PARSING_STATUS (status, TRUE); + + cr_parser_try_to_skip_spaces_and_comments (a_this); + goto parse_charset ; + } else if (token) { + status = cr_tknzr_unget_token (PRIVATE (a_this)->tknzr, + token); + token = NULL; + CHECK_PARSING_STATUS (status, TRUE); + } + +/* parse_imports:*/ + do { + if (token) { + cr_token_destroy (token); + token = NULL; + } + cr_parser_try_to_skip_spaces_and_comments (a_this) ; + status = cr_tknzr_get_next_token + (PRIVATE (a_this)->tknzr, &token); + + if (status == CR_END_OF_INPUT_ERROR) + goto done; + CHECK_PARSING_STATUS (status, TRUE); + } while (token + && (token->type == S_TK + || token->type == CDO_TK || token->type == CDC_TK)); + + if (token) { + status = cr_tknzr_unget_token (PRIVATE (a_this)->tknzr, + token); + token = NULL; + } + + for (;;) { + status = cr_tknzr_get_next_token + (PRIVATE (a_this)->tknzr, &token); + if (status == CR_END_OF_INPUT_ERROR) + goto done; + CHECK_PARSING_STATUS (status, TRUE); + + if (token && token->type == IMPORT_SYM_TK) { + GList *media_list = NULL; + CRString *import_string = NULL; + CRParsingLocation location = {0} ; + + status = cr_tknzr_unget_token + (PRIVATE (a_this)->tknzr, token); + token = NULL; + CHECK_PARSING_STATUS (status, TRUE); + + status = cr_parser_parse_import (a_this, + &media_list, + &import_string, + &location); + if (status == CR_OK) { + if (import_string + && PRIVATE (a_this)->sac_handler + && PRIVATE (a_this)->sac_handler->import_style) { + PRIVATE (a_this)->sac_handler->import_style + (PRIVATE(a_this)->sac_handler, + media_list, + import_string, + NULL, &location) ; + + if ((PRIVATE (a_this)->sac_handler->resolve_import == TRUE)) { + /* + *TODO: resolve the + *import rule. + */ + } + + if ((PRIVATE (a_this)->sac_handler->import_style_result)) { + PRIVATE (a_this)->sac_handler->import_style_result + (PRIVATE (a_this)->sac_handler, + media_list, import_string, + NULL, NULL); + } + } + } else if (status != CR_END_OF_INPUT_ERROR) { + if (PRIVATE (a_this)->sac_handler + && PRIVATE (a_this)->sac_handler->error) { + PRIVATE (a_this)->sac_handler->error + (PRIVATE (a_this)->sac_handler); + } + status = cr_parser_parse_atrule_core (a_this); + CHECK_PARSING_STATUS (status, TRUE) ; + } else { + goto error ; + } + + /* + *then, after calling the appropriate + *SAC handler, free + *the media_list and import_string. + */ + if (media_list) { + GList *cur = NULL; + + /*free the medium list */ + for (cur = media_list; cur; cur = cur->next) { + if (cur->data) { + cr_string_destroy (cur->data); + } + } + + g_list_free (media_list); + media_list = NULL; + } + + if (import_string) { + cr_string_destroy (import_string); + import_string = NULL; + } + + cr_parser_try_to_skip_spaces_and_comments (a_this); + } else if (token + && (token->type == S_TK + || token->type == CDO_TK + || token->type == CDC_TK)) { + status = cr_tknzr_unget_token + (PRIVATE (a_this)->tknzr, token); + token = NULL; + + do { + if (token) { + cr_token_destroy (token); + token = NULL; + } + + status = cr_tknzr_get_next_token + (PRIVATE (a_this)->tknzr, &token); + + if (status == CR_END_OF_INPUT_ERROR) + goto done; + CHECK_PARSING_STATUS (status, TRUE); + } while (token + && (token->type == S_TK + || token->type == CDO_TK + || token->type == CDC_TK)); + } else { + if (token) { + status = cr_tknzr_unget_token + (PRIVATE (a_this)->tknzr, token); + token = NULL; + } + goto parse_ruleset_and_others; + } + } + + parse_ruleset_and_others: + + cr_parser_try_to_skip_spaces_and_comments (a_this); + + for (;;) { + status = cr_tknzr_get_next_token + (PRIVATE (a_this)->tknzr, &token); + if (status == CR_END_OF_INPUT_ERROR) + goto done; + CHECK_PARSING_STATUS (status, TRUE); + + if (token + && (token->type == S_TK + || token->type == CDO_TK || token->type == CDC_TK)) { + status = cr_tknzr_unget_token + (PRIVATE (a_this)->tknzr, token); + token = NULL; + + do { + if (token) { + cr_token_destroy (token); + token = NULL; + } + + cr_parser_try_to_skip_spaces_and_comments + (a_this); + status = cr_tknzr_get_next_token + (PRIVATE (a_this)->tknzr, &token); + } while (token + && (token->type == S_TK + || token->type == COMMENT_TK + || token->type == CDO_TK + || token->type == CDC_TK)); + if (token) { + cr_tknzr_unget_token + (PRIVATE (a_this)->tknzr, token); + token = NULL; + } + } else if (token + && (token->type == HASH_TK + || (token->type == DELIM_TK + && token->u.unichar == '.') + || (token->type == DELIM_TK + && token->u.unichar == ':') + || (token->type == DELIM_TK + && token->u.unichar == '*') + || (token->type == BO_TK) + || token->type == IDENT_TK)) { + /* + *Try to parse a CSS2 ruleset. + *if the parsing fails, try to parse + *a css core ruleset. + */ + status = cr_tknzr_unget_token + (PRIVATE (a_this)->tknzr, token); + CHECK_PARSING_STATUS (status, TRUE); + token = NULL; + + status = cr_parser_parse_ruleset (a_this); + + if (status == CR_OK) { + continue; + } else { + if (PRIVATE (a_this)->sac_handler + && PRIVATE (a_this)->sac_handler->error) { + PRIVATE (a_this)->sac_handler-> + error + (PRIVATE (a_this)-> + sac_handler); + } + + status = cr_parser_parse_ruleset_core + (a_this); + + if (status == CR_OK) { + continue; + } else { + break; + } + } + } else if (token && token->type == MEDIA_SYM_TK) { + status = cr_tknzr_unget_token + (PRIVATE (a_this)->tknzr, token); + CHECK_PARSING_STATUS (status, TRUE); + token = NULL; + + status = cr_parser_parse_media (a_this); + if (status == CR_OK) { + continue; + } else { + if (PRIVATE (a_this)->sac_handler + && PRIVATE (a_this)->sac_handler->error) { + PRIVATE (a_this)->sac_handler-> + error + (PRIVATE (a_this)-> + sac_handler); + } + + status = cr_parser_parse_atrule_core (a_this); + + if (status == CR_OK) { + continue; + } else { + break; + } + } + + } else if (token && token->type == PAGE_SYM_TK) { + status = cr_tknzr_unget_token + (PRIVATE (a_this)->tknzr, token); + CHECK_PARSING_STATUS (status, TRUE); + token = NULL; + status = cr_parser_parse_page (a_this); + + if (status == CR_OK) { + continue; + } else { + if (PRIVATE (a_this)->sac_handler + && PRIVATE (a_this)->sac_handler->error) { + PRIVATE (a_this)->sac_handler-> + error + (PRIVATE (a_this)-> + sac_handler); + } + + status = cr_parser_parse_atrule_core (a_this); + + if (status == CR_OK) { + continue; + } else { + break; + } + } + } else if (token && token->type == FONT_FACE_SYM_TK) { + status = cr_tknzr_unget_token + (PRIVATE (a_this)->tknzr, token); + CHECK_PARSING_STATUS (status, TRUE); + token = NULL; + status = cr_parser_parse_font_face (a_this); + + if (status == CR_OK) { + continue; + } else { + if (PRIVATE (a_this)->sac_handler + && PRIVATE (a_this)->sac_handler->error) { + PRIVATE (a_this)->sac_handler-> + error + (PRIVATE (a_this)-> + sac_handler); + } + + status = cr_parser_parse_atrule_core (a_this); + + if (status == CR_OK) { + continue; + } else { + break; + } + } + } else { + status = cr_tknzr_unget_token + (PRIVATE (a_this)->tknzr, token); + CHECK_PARSING_STATUS (status, TRUE); + token = NULL; + status = cr_parser_parse_statement_core (a_this); + + if (status == CR_OK) { + continue; + } else { + break; + } + } + } + + done: + if (token) { + cr_token_destroy (token); + token = NULL; + } + + if (status == CR_END_OF_INPUT_ERROR || status == CR_OK) { + + if (PRIVATE (a_this)->sac_handler + && PRIVATE (a_this)->sac_handler->end_document) { + PRIVATE (a_this)->sac_handler->end_document + (PRIVATE (a_this)->sac_handler); + } + + return CR_OK; + } + + cr_parser_push_error + (a_this, (const guchar *) "could not recognize next production", CR_ERROR); + + if (PRIVATE (a_this)->sac_handler + && PRIVATE (a_this)->sac_handler->unrecoverable_error) { + PRIVATE (a_this)->sac_handler-> + unrecoverable_error (PRIVATE (a_this)->sac_handler); + } + + cr_parser_dump_err_stack (a_this, TRUE); + + return status; + + error: + + if (token) { + cr_token_destroy (token); + token = NULL; + } + + if (PRIVATE (a_this)->sac_handler + && PRIVATE (a_this)->sac_handler->unrecoverable_error) { + PRIVATE (a_this)->sac_handler-> + unrecoverable_error (PRIVATE (a_this)->sac_handler); + } + + cr_tknzr_set_cur_pos (PRIVATE (a_this)->tknzr, &init_pos); + + return status; +} + +/**************************************** + *Public CRParser Methods + ****************************************/ + +/** + * cr_parser_new: + * @a_tknzr: the tokenizer to use for the parsing. + * + *Creates a new parser to parse data + *coming the input stream given in parameter. + * + *Returns the newly created instance of #CRParser, + *or NULL if an error occurred. + */ +CRParser * +cr_parser_new (CRTknzr * a_tknzr) +{ + CRParser *result = NULL; + enum CRStatus status = CR_OK; + + result = g_malloc0 (sizeof (CRParser)); + + PRIVATE (result) = g_malloc0 (sizeof (CRParserPriv)); + + if (a_tknzr) { + status = cr_parser_set_tknzr (result, a_tknzr); + } + + g_return_val_if_fail (status == CR_OK, NULL); + + return result; +} + +/** + * cr_parser_new_from_buf: + *@a_buf: the buffer to parse. + *@a_len: the length of the data in the buffer. + *@a_enc: the encoding of the input buffer a_buf. + *@a_free_buf: if set to TRUE, a_buf will be freed + *during the destruction of the newly built instance + *of #CRParser. If set to FALSE, it is up to the caller to + *eventually free it. + * + *Instantiates a new parser from a memory buffer. + * + *Returns the newly built parser, or NULL if an error arises. + */ +CRParser * +cr_parser_new_from_buf (guchar * a_buf, + gulong a_len, + enum CREncoding a_enc, + gboolean a_free_buf) +{ + CRParser *result = NULL; + CRInput *input = NULL; + + g_return_val_if_fail (a_buf && a_len, NULL); + + input = cr_input_new_from_buf (a_buf, a_len, a_enc, a_free_buf); + g_return_val_if_fail (input, NULL); + + result = cr_parser_new_from_input (input); + if (!result) { + cr_input_destroy (input); + input = NULL; + return NULL; + } + return result; +} + +/** + * cr_parser_new_from_input: + * @a_input: the parser input stream to use. + * + * Returns a newly built parser input. + */ +CRParser * +cr_parser_new_from_input (CRInput * a_input) +{ + CRParser *result = NULL; + CRTknzr *tokenizer = NULL; + + if (a_input) { + tokenizer = cr_tknzr_new (a_input); + g_return_val_if_fail (tokenizer, NULL); + } + + result = cr_parser_new (tokenizer); + g_return_val_if_fail (result, NULL); + + return result; +} + +/** + * cr_parser_new_from_file: + * @a_file_uri: the uri of the file to parse. + * @a_enc: the file encoding to use. + * + * Returns the newly built parser. + */ +CRParser * +cr_parser_new_from_file (const guchar * a_file_uri, enum CREncoding a_enc) +{ + CRParser *result = NULL; + CRTknzr *tokenizer = NULL; + + tokenizer = cr_tknzr_new_from_uri (a_file_uri, a_enc); + if (!tokenizer) { + cr_utils_trace_info ("Could not open input file"); + return NULL; + } + + result = cr_parser_new (tokenizer); + g_return_val_if_fail (result, NULL); + return result; +} + +/** + * cr_parser_set_sac_handler: + *@a_this: the "this pointer" of the current instance of #CRParser. + *@a_handler: the handler to set. + * + *Sets a SAC document handler to the parser. + * + *Returns CR_OK upon successful completion, an error code otherwise. + */ +enum CRStatus +cr_parser_set_sac_handler (CRParser * a_this, CRDocHandler * a_handler) +{ + g_return_val_if_fail (a_this, CR_BAD_PARAM_ERROR); + + if (PRIVATE (a_this)->sac_handler) { + cr_doc_handler_unref (PRIVATE (a_this)->sac_handler); + } + + PRIVATE (a_this)->sac_handler = a_handler; + cr_doc_handler_ref (a_handler); + + return CR_OK; +} + +/** + * cr_parser_get_sac_handler: + *@a_this: the "this pointer" of the current instance of + *#CRParser. + *@a_handler: out parameter. The returned handler. + * + *Gets the SAC document handler. + * + *Returns CR_OK upon successful completion, an error code + *otherwise. + */ +enum CRStatus +cr_parser_get_sac_handler (CRParser * a_this, CRDocHandler ** a_handler) +{ + g_return_val_if_fail (a_this, CR_BAD_PARAM_ERROR); + + *a_handler = PRIVATE (a_this)->sac_handler; + + return CR_OK; +} + +/** + * cr_parser_set_default_sac_handler: + *@a_this: a pointer to the current instance of #CRParser. + * + *Sets the SAC handler associated to the current instance + *of #CRParser to the default SAC handler. + * + *Returns CR_OK upon successful completion, an error code otherwise. + */ +enum CRStatus +cr_parser_set_default_sac_handler (CRParser * a_this) +{ + CRDocHandler *default_sac_handler = NULL; + enum CRStatus status = CR_ERROR; + + g_return_val_if_fail (a_this && PRIVATE (a_this), CR_BAD_PARAM_ERROR); + + default_sac_handler = cr_doc_handler_new (); + + cr_doc_handler_set_default_sac_handler (default_sac_handler); + + status = cr_parser_set_sac_handler (a_this, default_sac_handler); + + if (status != CR_OK) { + cr_doc_handler_destroy (default_sac_handler); + default_sac_handler = NULL; + } + + return status; +} + +/** + * cr_parser_set_use_core_grammar: + * @a_this: the current instance of #CRParser. + * @a_use_core_grammar: where to parse against the css core grammar. + * + * Returns CR_OK upon successful completion, an error code otherwise. + */ +enum CRStatus +cr_parser_set_use_core_grammar (CRParser * a_this, + gboolean a_use_core_grammar) +{ + g_return_val_if_fail (a_this && PRIVATE (a_this), CR_BAD_PARAM_ERROR); + + PRIVATE (a_this)->use_core_grammar = a_use_core_grammar; + + return CR_OK; +} + +/** + * cr_parser_get_use_core_grammar: + * @a_this: the current instance of #CRParser. + * @a_use_core_grammar: whether to use the core grammar or not. + * + * Returns CR_OK upon successful completion, an error code otherwise. + */ +enum CRStatus +cr_parser_get_use_core_grammar (CRParser const * a_this, + gboolean * a_use_core_grammar) +{ + g_return_val_if_fail (a_this && PRIVATE (a_this), CR_BAD_PARAM_ERROR); + + *a_use_core_grammar = PRIVATE (a_this)->use_core_grammar; + + return CR_OK; +} + +/** + * cr_parser_parse_file: + *@a_this: a pointer to the current instance of #CRParser. + *@a_file_uri: the uri to the file to load. For the time being, + *@a_enc: the encoding of the file to parse. + *only local files are supported. + * + *Parses a the given in parameter. + * + *Returns CR_OK upon successful completion, an error code otherwise. + */ +enum CRStatus +cr_parser_parse_file (CRParser * a_this, + const guchar * a_file_uri, enum CREncoding a_enc) +{ + enum CRStatus status = CR_ERROR; + CRTknzr *tknzr = NULL; + + g_return_val_if_fail (a_this && PRIVATE (a_this) + && a_file_uri, CR_BAD_PARAM_ERROR); + + tknzr = cr_tknzr_new_from_uri (a_file_uri, a_enc); + + g_return_val_if_fail (tknzr != NULL, CR_ERROR); + + status = cr_parser_set_tknzr (a_this, tknzr); + g_return_val_if_fail (status == CR_OK, CR_ERROR); + + status = cr_parser_parse (a_this); + + return status; +} + +/** + * cr_parser_parse_expr: + * @a_this: the current instance of #CRParser. + * @a_expr: out parameter. the parsed expression. + * + *Parses an expression as defined by the css2 spec in appendix + *D.1: + *expr: term [ operator term ]* + * + * + * Returns CR_OK upon successful completion, an error code otherwise. + */ +enum CRStatus +cr_parser_parse_expr (CRParser * a_this, CRTerm ** a_expr) +{ + enum CRStatus status = CR_ERROR; + CRInputPos init_pos; + CRTerm *expr = NULL, + *expr2 = NULL; + guchar next_byte = 0; + gulong nb_terms = 0; + + g_return_val_if_fail (a_this && PRIVATE (a_this) + && a_expr, CR_BAD_PARAM_ERROR); + + RECORD_INITIAL_POS (a_this, &init_pos); + + status = cr_parser_parse_term (a_this, &expr); + + CHECK_PARSING_STATUS (status, FALSE); + + for (;;) { + guchar operator = 0; + + status = cr_tknzr_peek_byte (PRIVATE (a_this)->tknzr, + 1, &next_byte); + if (status != CR_OK) { + if (status == CR_END_OF_INPUT_ERROR) { + /* + if (!nb_terms) + { + goto error ; + } + */ + status = CR_OK; + break; + } else { + goto error; + } + } + + if (next_byte == '/' || next_byte == ',') { + READ_NEXT_BYTE (a_this, &operator); + } + + cr_parser_try_to_skip_spaces_and_comments (a_this); + + status = cr_parser_parse_term (a_this, &expr2); + + if (status != CR_OK || expr2 == NULL) { + status = CR_OK; + break; + } + + switch (operator) { + case '/': + expr2->the_operator = DIVIDE; + break; + case ',': + expr2->the_operator = COMMA; + + default: + break; + } + + expr = cr_term_append_term (expr, expr2); + expr2 = NULL; + operator = 0; + nb_terms++; + } + + if (status == CR_OK) { + *a_expr = cr_term_append_term (*a_expr, expr); + expr = NULL; + + cr_parser_clear_errors (a_this); + return CR_OK; + } + + error: + + if (expr) { + cr_term_destroy (expr); + expr = NULL; + } + + if (expr2) { + cr_term_destroy (expr2); + expr2 = NULL; + } + + cr_tknzr_set_cur_pos (PRIVATE (a_this)->tknzr, &init_pos); + + return status; +} + +/** + * cr_parser_parse_prio: + *@a_this: the current instance of #CRParser. + *@a_prio: a string representing the priority. + *Today, only "!important" is returned as only this + *priority is defined by css2. + * + *Parses a declaration priority as defined by + *the css2 grammar in appendix C: + *prio: IMPORTANT_SYM S* + * + * Returns CR_OK upon successful completion, an error code otherwise. + */ +enum CRStatus +cr_parser_parse_prio (CRParser * a_this, CRString ** a_prio) +{ + enum CRStatus status = CR_ERROR; + CRInputPos init_pos; + CRToken *token = NULL; + + g_return_val_if_fail (a_this && PRIVATE (a_this) + && a_prio + && *a_prio == NULL, CR_BAD_PARAM_ERROR); + + RECORD_INITIAL_POS (a_this, &init_pos); + + status = cr_tknzr_get_next_token (PRIVATE (a_this)->tknzr, &token); + if (status == CR_END_OF_INPUT_ERROR) { + goto error; + } + ENSURE_PARSING_COND (status == CR_OK + && token && token->type == IMPORTANT_SYM_TK); + + cr_parser_try_to_skip_spaces_and_comments (a_this); + *a_prio = cr_string_new_from_string ("!important"); + cr_token_destroy (token); + token = NULL; + return CR_OK; + + error: + if (token) { + cr_token_destroy (token); + token = NULL; + } + cr_tknzr_set_cur_pos (PRIVATE (a_this)->tknzr, &init_pos); + + return status; +} + +/** + * cr_parser_parse_declaration: + *@a_this: the "this pointer" of the current instance of #CRParser. + *@a_property: the successfully parsed property. The caller + * *must* free the returned pointer. + *@a_expr: the expression that represents the attribute value. + *The caller *must* free the returned pointer. + * + *TODO: return the parsed priority, so that + *upper layers can take benefit from it. + *Parses a "declaration" as defined by the css2 spec in appendix D.1: + *declaration ::= [property ':' S* expr prio?]? + * + *Returns CR_OK upon successful completion, an error code otherwise. + */ +enum CRStatus +cr_parser_parse_declaration (CRParser * a_this, + CRString ** a_property, + CRTerm ** a_expr, gboolean * a_important) +{ + enum CRStatus status = CR_ERROR; + CRInputPos init_pos; + guint32 cur_char = 0; + CRTerm *expr = NULL; + CRString *prio = NULL; + + g_return_val_if_fail (a_this && PRIVATE (a_this) + && a_property && a_expr + && a_important, CR_BAD_PARAM_ERROR); + + RECORD_INITIAL_POS (a_this, &init_pos); + + status = cr_parser_parse_property (a_this, a_property); + + if (status == CR_END_OF_INPUT_ERROR) + goto error; + + CHECK_PARSING_STATUS_ERR + (a_this, status, FALSE, + (const guchar *) "while parsing declaration: next property is malformed", + CR_SYNTAX_ERROR); + + READ_NEXT_CHAR (a_this, &cur_char); + + if (cur_char != ':') { + status = CR_PARSING_ERROR; + cr_parser_push_error + (a_this, + (const guchar *) "while parsing declaration: this char must be ':'", + CR_SYNTAX_ERROR); + goto error; + } + + cr_parser_try_to_skip_spaces_and_comments (a_this); + + status = cr_parser_parse_expr (a_this, &expr); + + CHECK_PARSING_STATUS_ERR + (a_this, status, FALSE, + (const guchar *) "while parsing declaration: next expression is malformed", + CR_SYNTAX_ERROR); + + cr_parser_try_to_skip_spaces_and_comments (a_this); + status = cr_parser_parse_prio (a_this, &prio); + if (prio) { + cr_string_destroy (prio); + prio = NULL; + *a_important = TRUE; + } else { + *a_important = FALSE; + } + if (*a_expr) { + cr_term_append_term (*a_expr, expr); + expr = NULL; + } else { + *a_expr = expr; + expr = NULL; + } + + cr_parser_clear_errors (a_this); + return CR_OK; + + error: + + if (expr) { + cr_term_destroy (expr); + expr = NULL; + } + + if (*a_property) { + cr_string_destroy (*a_property); + *a_property = NULL; + } + + cr_tknzr_set_cur_pos (PRIVATE (a_this)->tknzr, &init_pos); + + return status; +} + +/** + * cr_parser_parse_statement_core: + *@a_this: the current instance of #CRParser. + * + *Parses a statement as defined by the css core grammar in + *chapter 4.1 of the css2 spec. + *statement : ruleset | at-rule; + * + *Returns CR_OK upon successful completion, an error code otherwise. + */ +enum CRStatus +cr_parser_parse_statement_core (CRParser * a_this) +{ + CRToken *token = NULL; + CRInputPos init_pos; + enum CRStatus status = CR_ERROR; + + g_return_val_if_fail (a_this && PRIVATE (a_this), CR_BAD_PARAM_ERROR); + + RECORD_INITIAL_POS (a_this, &init_pos); + + status = cr_tknzr_get_next_token (PRIVATE (a_this)->tknzr, &token); + + ENSURE_PARSING_COND (status == CR_OK && token); + + switch (token->type) { + case ATKEYWORD_TK: + case IMPORT_SYM_TK: + case PAGE_SYM_TK: + case MEDIA_SYM_TK: + case FONT_FACE_SYM_TK: + case CHARSET_SYM_TK: + cr_tknzr_unget_token (PRIVATE (a_this)->tknzr, token); + token = NULL; + status = cr_parser_parse_atrule_core (a_this); + CHECK_PARSING_STATUS (status, TRUE); + break; + + default: + cr_tknzr_unget_token (PRIVATE (a_this)->tknzr, token); + token = NULL; + status = cr_parser_parse_ruleset_core (a_this); + cr_parser_clear_errors (a_this); + CHECK_PARSING_STATUS (status, TRUE); + } + + return CR_OK; + + error: + if (token) { + cr_token_destroy (token); + token = NULL; + } + + cr_tknzr_set_cur_pos (PRIVATE (a_this)->tknzr, &init_pos); + + return status; +} + +/** + * cr_parser_parse_ruleset: + *@a_this: the "this pointer" of the current instance of #CRParser. + * + *Parses a "ruleset" as defined in the css2 spec at appendix D.1. + *ruleset ::= selector [ ',' S* selector ]* + *'{' S* declaration? [ ';' S* declaration? ]* '}' S*; + * + *This methods calls the the SAC handler on the relevant SAC handler + *callbacks whenever it encounters some specific constructions. + *See the documentation of #CRDocHandler (the SAC handler) to know + *when which SAC handler is called. + * + *Returns CR_OK upon successful completion, an error code otherwise. + */ +enum CRStatus +cr_parser_parse_ruleset (CRParser * a_this) +{ + enum CRStatus status = CR_OK; + CRInputPos init_pos; + guint32 cur_char = 0, + next_char = 0; + CRString *property = NULL; + CRTerm *expr = NULL; + CRSimpleSel *simple_sels = NULL; + CRSelector *selector = NULL; + gboolean start_selector = FALSE, + is_important = FALSE; + CRParsingLocation end_parsing_location; + + g_return_val_if_fail (a_this, CR_BAD_PARAM_ERROR); + + RECORD_INITIAL_POS (a_this, &init_pos); + + status = cr_parser_parse_selector (a_this, &selector); + CHECK_PARSING_STATUS (status, FALSE); + + READ_NEXT_CHAR (a_this, &cur_char); + + ENSURE_PARSING_COND_ERR + (a_this, cur_char == '{', + (const guchar *) "while parsing rulset: current char should be '{'", + CR_SYNTAX_ERROR); + + if (PRIVATE (a_this)->sac_handler + && PRIVATE (a_this)->sac_handler->start_selector) { + /* + *the selector is ref counted so that the parser's user + *can choose to keep it. + */ + if (selector) { + cr_selector_ref (selector); + } + + PRIVATE (a_this)->sac_handler->start_selector + (PRIVATE (a_this)->sac_handler, selector); + start_selector = TRUE; + } + + cr_parser_try_to_skip_spaces_and_comments (a_this); + + PRIVATE (a_this)->state = TRY_PARSE_RULESET_STATE; + + status = cr_parser_parse_declaration (a_this, &property, + &expr, + &is_important); + if (expr) { + cr_term_ref (expr); + } + if (status == CR_OK + && PRIVATE (a_this)->sac_handler + && PRIVATE (a_this)->sac_handler->property) { + PRIVATE (a_this)->sac_handler->property + (PRIVATE (a_this)->sac_handler, property, expr, + is_important); + } + if (status == CR_OK) { + /* + *free the allocated + *'property' and 'term' before parsing + *next declarations. + */ + if (property) { + cr_string_destroy (property); + property = NULL; + } + if (expr) { + cr_term_unref (expr); + expr = NULL; + } + } else {/*status != CR_OK*/ + guint32 c = 0 ; + /* + *test if we have reached '}', which + *would mean that we are parsing an empty ruleset (eg. x{ }) + *In that case, goto end_of_ruleset. + */ + status = cr_tknzr_peek_char (PRIVATE (a_this)->tknzr, &c) ; + if (status == CR_OK && c == '}') { + status = CR_OK ; + goto end_of_ruleset ; + } + } + CHECK_PARSING_STATUS_ERR + (a_this, status, FALSE, + (const guchar *) "while parsing ruleset: next construction should be a declaration", + CR_SYNTAX_ERROR); + + for (;;) { + PEEK_NEXT_CHAR (a_this, &next_char); + if (next_char != ';') + break; + + /*consume the ';' char */ + READ_NEXT_CHAR (a_this, &cur_char); + + cr_parser_try_to_skip_spaces_and_comments (a_this); + + status = cr_parser_parse_declaration (a_this, &property, + &expr, &is_important); + + if (expr) { + cr_term_ref (expr); + } + if (status == CR_OK + && PRIVATE (a_this)->sac_handler + && PRIVATE (a_this)->sac_handler->property) { + PRIVATE (a_this)->sac_handler->property + (PRIVATE (a_this)->sac_handler, + property, expr, is_important); + } + if (property) { + cr_string_destroy (property); + property = NULL; + } + if (expr) { + cr_term_unref (expr); + expr = NULL; + } + } + + end_of_ruleset: + cr_parser_try_to_skip_spaces_and_comments (a_this); + cr_parser_get_parsing_location (a_this, &end_parsing_location); + READ_NEXT_CHAR (a_this, &cur_char); + ENSURE_PARSING_COND_ERR + (a_this, cur_char == '}', + (const guchar *) "while parsing rulset: current char must be a '}'", + CR_SYNTAX_ERROR); + + selector->location = end_parsing_location; + if (PRIVATE (a_this)->sac_handler + && PRIVATE (a_this)->sac_handler->end_selector) { + PRIVATE (a_this)->sac_handler->end_selector + (PRIVATE (a_this)->sac_handler, selector); + start_selector = FALSE; + } + + if (expr) { + cr_term_unref (expr); + expr = NULL; + } + + if (simple_sels) { + cr_simple_sel_destroy (simple_sels); + simple_sels = NULL; + } + + if (selector) { + cr_selector_unref (selector); + selector = NULL; + } + + cr_parser_clear_errors (a_this); + PRIVATE (a_this)->state = RULESET_PARSED_STATE; + + return CR_OK; + + error: + if (start_selector == TRUE + && PRIVATE (a_this)->sac_handler + && PRIVATE (a_this)->sac_handler->error) { + PRIVATE (a_this)->sac_handler->error + (PRIVATE (a_this)->sac_handler); + } + if (expr) { + cr_term_unref (expr); + expr = NULL; + } + if (simple_sels) { + cr_simple_sel_destroy (simple_sels); + simple_sels = NULL; + } + if (property) { + cr_string_destroy (property); + } + if (selector) { + cr_selector_unref (selector); + selector = NULL; + } + + cr_tknzr_set_cur_pos (PRIVATE (a_this)->tknzr, &init_pos); + + return status; +} + +/** + * cr_parser_parse_import: + *@a_this: the "this pointer" of the current instance + *of #CRParser. + *@a_media_list: out parameter. A linked list of + *#CRString + *Each CRString is a string that contains + *a 'medium' declaration part of the successfully + *parsed 'import' declaration. + *@a_import_string: out parameter. + *A string that contains the 'import + *string". The import string can be either an uri (if it starts with + *the substring "uri(") or a any other css2 string. Note that + * *a_import_string must be initially set to NULL or else, this function + *will return CR_BAD_PARAM_ERROR. + *@a_location: the location (line, column) where the import has been parsed + * + *Parses an 'import' declaration as defined in the css2 spec + *in appendix D.1: + * + *import ::= + *\@import [STRING|URI] S* [ medium [ ',' S* medium]* ]? ';' S* + * + *Returns CR_OK upon successful completion, an error code otherwise. + */ +enum CRStatus +cr_parser_parse_import (CRParser * a_this, + GList ** a_media_list, + CRString ** a_import_string, + CRParsingLocation *a_location) +{ + enum CRStatus status = CR_OK; + CRInputPos init_pos; + guint32 cur_char = 0, + next_char = 0; + CRString *medium = NULL; + + g_return_val_if_fail (a_this + && a_import_string + && (*a_import_string == NULL), + CR_BAD_PARAM_ERROR); + + RECORD_INITIAL_POS (a_this, &init_pos); + + if (BYTE (a_this, 1, NULL) == '@' + && BYTE (a_this, 2, NULL) == 'i' + && BYTE (a_this, 3, NULL) == 'm' + && BYTE (a_this, 4, NULL) == 'p' + && BYTE (a_this, 5, NULL) == 'o' + && BYTE (a_this, 6, NULL) == 'r' + && BYTE (a_this, 7, NULL) == 't') { + SKIP_CHARS (a_this, 1); + if (a_location) { + cr_parser_get_parsing_location + (a_this, a_location) ; + } + SKIP_CHARS (a_this, 6); + status = CR_OK; + } else { + status = CR_PARSING_ERROR; + goto error; + } + + cr_parser_try_to_skip_spaces_and_comments (a_this); + + PRIVATE (a_this)->state = TRY_PARSE_IMPORT_STATE; + + PEEK_NEXT_CHAR (a_this, &next_char); + + if (next_char == '"' || next_char == '\'') { + status = cr_parser_parse_string (a_this, a_import_string); + + CHECK_PARSING_STATUS (status, FALSE); + } else { + status = cr_parser_parse_uri (a_this, a_import_string); + + CHECK_PARSING_STATUS (status, FALSE); + } + + cr_parser_try_to_skip_spaces_and_comments (a_this); + + status = cr_parser_parse_ident (a_this, &medium); + + if (status == CR_OK && medium) { + *a_media_list = g_list_append (*a_media_list, medium); + medium = NULL; + } + + cr_parser_try_to_skip_spaces_and_comments (a_this); + + for (; status == CR_OK;) { + if ((status = cr_tknzr_peek_char (PRIVATE (a_this)->tknzr, + &next_char)) != CR_OK) { + if (status == CR_END_OF_INPUT_ERROR) { + status = CR_OK; + goto okay; + } + goto error; + } + + if (next_char == ',') { + READ_NEXT_CHAR (a_this, &cur_char); + } else { + break; + } + + cr_parser_try_to_skip_spaces_and_comments (a_this); + + status = cr_parser_parse_ident (a_this, &medium); + + cr_parser_try_to_skip_spaces_and_comments (a_this); + + if ((status == CR_OK) && medium) { + *a_media_list = g_list_append (*a_media_list, medium); + + medium = NULL; + } + + CHECK_PARSING_STATUS (status, FALSE); + cr_parser_try_to_skip_spaces_and_comments (a_this); + } + cr_parser_try_to_skip_spaces_and_comments (a_this); + READ_NEXT_CHAR (a_this, &cur_char); + ENSURE_PARSING_COND (cur_char == ';'); + cr_parser_try_to_skip_spaces_and_comments (a_this); + okay: + cr_parser_clear_errors (a_this); + PRIVATE (a_this)->state = IMPORT_PARSED_STATE; + + return CR_OK; + + error: + + if (*a_media_list) { + GList *cur = NULL; + + /* + *free each element of *a_media_list. + *Note that each element of *a_medium list *must* + *be a GString* or else, the code that is coming next + *will corrupt the memory and lead to hard to debug + *random crashes. + *This is where C++ and its compile time + *type checking mechanism (through STL containers) would + *have prevented us to go through this hassle. + */ + for (cur = *a_media_list; cur; cur = cur->next) { + if (cur->data) { + cr_string_destroy (cur->data); + } + } + + g_list_free (*a_media_list); + *a_media_list = NULL; + } + + if (*a_import_string) { + cr_string_destroy (*a_import_string); + *a_import_string = NULL; + } + + if (medium) { + cr_string_destroy (medium); + medium = NULL; + } + + cr_tknzr_set_cur_pos (PRIVATE (a_this)->tknzr, &init_pos); + + return status; +} + +/** + * cr_parser_parse_media: + *@a_this: the "this pointer" of the current instance of #CRParser. + * + *Parses a 'media' declaration as specified in the css2 spec at + *appendix D.1: + * + *media ::= \@media S* medium [ ',' S* medium ]* '{' S* ruleset* '}' S* + * + *Note that this function calls the required sac handlers during the parsing + *to notify media productions. See #CRDocHandler to know the callback called + *during \@media parsing. + * + *Returns CR_OK upon successful completion, an error code otherwise. + */ +enum CRStatus +cr_parser_parse_media (CRParser * a_this) +{ + enum CRStatus status = CR_OK; + CRInputPos init_pos; + CRToken *token = NULL; + guint32 next_char = 0, + cur_char = 0; + CRString *medium = NULL; + GList *media_list = NULL; + CRParsingLocation location = {0} ; + + g_return_val_if_fail (a_this + && PRIVATE (a_this), + CR_BAD_PARAM_ERROR); + + RECORD_INITIAL_POS (a_this, &init_pos); + + status = cr_tknzr_get_next_token (PRIVATE (a_this)->tknzr, + &token); + ENSURE_PARSING_COND (status == CR_OK + && token + && token->type == MEDIA_SYM_TK); + cr_parsing_location_copy (&location, &token->location) ; + cr_token_destroy (token); + token = NULL; + + cr_parser_try_to_skip_spaces_and_comments (a_this); + + status = cr_tknzr_get_next_token (PRIVATE (a_this)->tknzr, &token); + ENSURE_PARSING_COND (status == CR_OK + && token && token->type == IDENT_TK); + + medium = token->u.str; + token->u.str = NULL; + cr_token_destroy (token); + token = NULL; + + if (medium) { + media_list = g_list_append (media_list, medium); + medium = NULL; + } + + for (; status == CR_OK;) { + cr_parser_try_to_skip_spaces_and_comments (a_this); + PEEK_NEXT_CHAR (a_this, &next_char); + + if (next_char == ',') { + READ_NEXT_CHAR (a_this, &cur_char); + } else { + break; + } + + cr_parser_try_to_skip_spaces_and_comments (a_this); + + status = cr_parser_parse_ident (a_this, &medium); + + CHECK_PARSING_STATUS (status, FALSE); + + if (medium) { + media_list = g_list_append (media_list, medium); + medium = NULL; + } + } + + READ_NEXT_CHAR (a_this, &cur_char); + + ENSURE_PARSING_COND (cur_char == '{'); + + /* + *call the SAC handler api here. + */ + if (PRIVATE (a_this)->sac_handler + && PRIVATE (a_this)->sac_handler->start_media) { + PRIVATE (a_this)->sac_handler->start_media + (PRIVATE (a_this)->sac_handler, media_list, + &location); + } + + cr_parser_try_to_skip_spaces_and_comments (a_this); + + PRIVATE (a_this)->state = TRY_PARSE_MEDIA_STATE; + + for (; status == CR_OK;) { + status = cr_parser_parse_ruleset (a_this); + cr_parser_try_to_skip_spaces_and_comments (a_this); + } + + READ_NEXT_CHAR (a_this, &cur_char); + + ENSURE_PARSING_COND (cur_char == '}'); + + /* + *call the right SAC handler api here. + */ + if (PRIVATE (a_this)->sac_handler + && PRIVATE (a_this)->sac_handler->end_media) { + PRIVATE (a_this)->sac_handler->end_media + (PRIVATE (a_this)->sac_handler, media_list); + } + + cr_parser_try_to_skip_spaces_and_comments (a_this); + + /* + *Then, free the data structures passed to + *the last call to the SAC handler. + */ + if (medium) { + cr_string_destroy (medium); + medium = NULL; + } + + if (media_list) { + GList *cur = NULL; + + for (cur = media_list; cur; cur = cur->next) { + cr_string_destroy (cur->data); + } + + g_list_free (media_list); + media_list = NULL; + } + + cr_parser_clear_errors (a_this); + PRIVATE (a_this)->state = MEDIA_PARSED_STATE; + + return CR_OK; + + error: + + if (token) { + cr_token_destroy (token); + token = NULL; + } + + if (medium) { + cr_string_destroy (medium); + medium = NULL; + } + + if (media_list) { + GList *cur = NULL; + + for (cur = media_list; cur; cur = cur->next) { + cr_string_destroy (cur->data); + } + + g_list_free (media_list); + media_list = NULL; + } + + cr_tknzr_set_cur_pos (PRIVATE (a_this)->tknzr, &init_pos); + + return status; +} + +/** + * cr_parser_parse_page: + *@a_this: the "this pointer" of the current instance of #CRParser. + * + *Parses '\@page' rule as specified in the css2 spec in appendix D.1: + *page ::= PAGE_SYM S* IDENT? pseudo_page? S* + *'{' S* declaration [ ';' S* declaration ]* '}' S* + * + *This function also calls the relevant SAC handlers whenever it + *encounters a construction that must + *be reported to the calling application. + * + *Returns CR_OK upon successful completion, an error code otherwise. + */ +enum CRStatus +cr_parser_parse_page (CRParser * a_this) +{ + enum CRStatus status = CR_OK; + CRInputPos init_pos; + CRToken *token = NULL; + CRTerm *css_expression = NULL; + CRString *page_selector = NULL, + *page_pseudo_class = NULL, + *property = NULL; + gboolean important = TRUE; + CRParsingLocation location = {0} ; + + g_return_val_if_fail (a_this, CR_BAD_PARAM_ERROR); + + RECORD_INITIAL_POS (a_this, &init_pos); + + status = cr_tknzr_get_next_token (PRIVATE (a_this)->tknzr, + &token) ; + ENSURE_PARSING_COND (status == CR_OK + && token + && token->type == PAGE_SYM_TK); + + cr_parsing_location_copy (&location, &token->location) ; + cr_token_destroy (token); + token = NULL; + + cr_parser_try_to_skip_spaces_and_comments (a_this); + + status = cr_tknzr_get_next_token (PRIVATE (a_this)->tknzr, &token); + ENSURE_PARSING_COND (status == CR_OK && token); + + if (token->type == IDENT_TK) { + page_selector = token->u.str; + token->u.str = NULL; + cr_token_destroy (token); + token = NULL; + } else { + cr_tknzr_unget_token (PRIVATE (a_this)->tknzr, token); + token = NULL; + } + + /* + *try to parse pseudo_page + */ + cr_parser_try_to_skip_spaces_and_comments (a_this); + status = cr_tknzr_get_next_token (PRIVATE (a_this)->tknzr, &token); + ENSURE_PARSING_COND (status == CR_OK && token); + + if (token->type == DELIM_TK && token->u.unichar == ':') { + cr_token_destroy (token); + token = NULL; + status = cr_parser_parse_ident (a_this, &page_pseudo_class); + CHECK_PARSING_STATUS (status, FALSE); + } else { + cr_tknzr_unget_token (PRIVATE (a_this)->tknzr, token); + token = NULL; + } + + /* + *parse_block + * + */ + cr_parser_try_to_skip_spaces_and_comments (a_this); + + status = cr_tknzr_get_next_token (PRIVATE (a_this)->tknzr, &token); + + ENSURE_PARSING_COND (status == CR_OK && token + && token->type == CBO_TK); + + cr_token_destroy (token); + token = NULL; + + /* + *Call the appropriate SAC handler here. + */ + if (PRIVATE (a_this)->sac_handler + && PRIVATE (a_this)->sac_handler->start_page) { + PRIVATE (a_this)->sac_handler->start_page + (PRIVATE (a_this)->sac_handler, + page_selector, page_pseudo_class, + &location); + } + cr_parser_try_to_skip_spaces_and_comments (a_this); + + PRIVATE (a_this)->state = TRY_PARSE_PAGE_STATE; + + status = cr_parser_parse_declaration (a_this, &property, + &css_expression, + &important); + ENSURE_PARSING_COND (status == CR_OK); + + /* + *call the relevant SAC handler here... + */ + if (PRIVATE (a_this)->sac_handler + && PRIVATE (a_this)->sac_handler->property) { + if (css_expression) + cr_term_ref (css_expression); + + PRIVATE (a_this)->sac_handler->property + (PRIVATE (a_this)->sac_handler, + property, css_expression, important); + } + /* + *... and free the data structure passed to that last + *SAC handler. + */ + if (property) { + cr_string_destroy (property); + property = NULL; + } + if (css_expression) { + cr_term_unref (css_expression); + css_expression = NULL; + } + + for (;;) { + /*parse the other ';' separated declarations */ + if (token) { + cr_token_destroy (token); + token = NULL; + } + status = cr_tknzr_get_next_token + (PRIVATE (a_this)->tknzr, &token); + + ENSURE_PARSING_COND (status == CR_OK && token); + + if (token->type != SEMICOLON_TK) { + cr_tknzr_unget_token + (PRIVATE (a_this)->tknzr, + token); + token = NULL ; + break; + } + + cr_token_destroy (token); + token = NULL; + cr_parser_try_to_skip_spaces_and_comments (a_this); + + status = cr_parser_parse_declaration (a_this, &property, + &css_expression, + &important); + if (status != CR_OK) + break ; + + /* + *call the relevant SAC handler here... + */ + if (PRIVATE (a_this)->sac_handler + && PRIVATE (a_this)->sac_handler->property) { + cr_term_ref (css_expression); + PRIVATE (a_this)->sac_handler->property + (PRIVATE (a_this)->sac_handler, + property, css_expression, important); + } + /* + *... and free the data structure passed to that last + *SAC handler. + */ + if (property) { + cr_string_destroy (property); + property = NULL; + } + if (css_expression) { + cr_term_unref (css_expression); + css_expression = NULL; + } + } + cr_parser_try_to_skip_spaces_and_comments + (a_this) ; + if (token) { + cr_token_destroy (token) ; + token = NULL ; + } + + status = cr_tknzr_get_next_token + (PRIVATE (a_this)->tknzr, &token); + ENSURE_PARSING_COND (status == CR_OK + && token + && token->type == CBC_TK) ; + cr_token_destroy (token) ; + token = NULL ; + /* + *call the relevant SAC handler here. + */ + if (PRIVATE (a_this)->sac_handler + && PRIVATE (a_this)->sac_handler->end_page) { + PRIVATE (a_this)->sac_handler->end_page + (PRIVATE (a_this)->sac_handler, + page_selector, page_pseudo_class); + } + + if (page_selector) { + cr_string_destroy (page_selector); + page_selector = NULL; + } + + if (page_pseudo_class) { + cr_string_destroy (page_pseudo_class); + page_pseudo_class = NULL; + } + + cr_parser_try_to_skip_spaces_and_comments (a_this); + + /*here goes the former implem of this function ... */ + + cr_parser_clear_errors (a_this); + PRIVATE (a_this)->state = PAGE_PARSED_STATE; + + return CR_OK; + + error: + if (token) { + cr_token_destroy (token); + token = NULL; + } + if (page_selector) { + cr_string_destroy (page_selector); + page_selector = NULL; + } + if (page_pseudo_class) { + cr_string_destroy (page_pseudo_class); + page_pseudo_class = NULL; + } + if (property) { + cr_string_destroy (property); + property = NULL; + } + if (css_expression) { + cr_term_destroy (css_expression); + css_expression = NULL; + } + cr_tknzr_set_cur_pos (PRIVATE (a_this)->tknzr, &init_pos); + return status; +} + +/** + * cr_parser_parse_charset: + *@a_this: the "this pointer" of the current instance of #CRParser. + *@a_value: out parameter. The actual parsed value of the charset + *declararation. Note that for safety check reasons, *a_value must be + *set to NULL. + *@a_charset_sym_location: the parsing location of the charset rule + * + *Parses a charset declaration as defined implicitly by the css2 spec in + *appendix D.1: + *charset ::= CHARSET_SYM S* STRING S* ';' + * + *Returns CR_OK upon successful completion, an error code otherwise. + */ +enum CRStatus +cr_parser_parse_charset (CRParser * a_this, CRString ** a_value, + CRParsingLocation *a_charset_sym_location) +{ + enum CRStatus status = CR_OK; + CRInputPos init_pos; + CRToken *token = NULL; + CRString *charset_str = NULL; + + g_return_val_if_fail (a_this && a_value + && (*a_value == NULL), + CR_BAD_PARAM_ERROR); + + RECORD_INITIAL_POS (a_this, &init_pos); + + status = cr_tknzr_get_next_token (PRIVATE (a_this)->tknzr, &token); + + ENSURE_PARSING_COND (status == CR_OK + && token && token->type == CHARSET_SYM_TK); + if (a_charset_sym_location) { + cr_parsing_location_copy (a_charset_sym_location, + &token->location) ; + } + cr_token_destroy (token); + token = NULL; + + PRIVATE (a_this)->state = TRY_PARSE_CHARSET_STATE; + + cr_parser_try_to_skip_spaces_and_comments (a_this); + + status = cr_tknzr_get_next_token (PRIVATE (a_this)->tknzr, &token); + ENSURE_PARSING_COND (status == CR_OK + && token && token->type == STRING_TK); + charset_str = token->u.str; + token->u.str = NULL; + cr_token_destroy (token); + token = NULL; + + cr_parser_try_to_skip_spaces_and_comments (a_this); + + status = cr_tknzr_get_next_token (PRIVATE (a_this)->tknzr, &token); + + ENSURE_PARSING_COND (status == CR_OK + && token && token->type == SEMICOLON_TK); + cr_token_destroy (token); + token = NULL; + + if (charset_str) { + *a_value = charset_str; + charset_str = NULL; + } + + PRIVATE (a_this)->state = CHARSET_PARSED_STATE; + return CR_OK; + + error: + + if (token) { + cr_token_destroy (token); + token = NULL; + } + + if (*a_value) { + cr_string_destroy (*a_value); + *a_value = NULL; + } + + if (charset_str) { + cr_string_destroy (charset_str); + charset_str = NULL; + } + + cr_tknzr_set_cur_pos (PRIVATE (a_this)->tknzr, &init_pos); + + return status; +} + +/** + * cr_parser_parse_font_face: + *@a_this: the current instance of #CRParser. + * + *Parses the "\@font-face" rule specified in the css1 spec in + *appendix D.1: + * + *font_face ::= FONT_FACE_SYM S* + *'{' S* declaration [ ';' S* declaration ]* '}' S* + * + *This function will call SAC handlers whenever it is necessary. + * + *Returns CR_OK upon successful completion, an error code otherwise. + */ +enum CRStatus +cr_parser_parse_font_face (CRParser * a_this) +{ + enum CRStatus status = CR_ERROR; + CRInputPos init_pos; + CRString *property = NULL; + CRTerm *css_expression = NULL; + CRToken *token = NULL; + gboolean important = FALSE; + guint32 next_char = 0, + cur_char = 0; + CRParsingLocation location = {0} ; + + g_return_val_if_fail (a_this, CR_BAD_PARAM_ERROR); + + RECORD_INITIAL_POS (a_this, &init_pos); + + status = cr_tknzr_get_next_token (PRIVATE (a_this)->tknzr, &token); + ENSURE_PARSING_COND (status == CR_OK + && token + && token->type == FONT_FACE_SYM_TK); + + cr_parser_try_to_skip_spaces_and_comments (a_this); + if (token) { + cr_parsing_location_copy (&location, + &token->location) ; + cr_token_destroy (token); + token = NULL; + } + status = cr_tknzr_get_next_token (PRIVATE (a_this)->tknzr, + &token); + ENSURE_PARSING_COND (status == CR_OK && token + && token->type == CBO_TK); + if (token) { + cr_token_destroy (token); + token = NULL; + } + /* + *here, call the relevant SAC handler. + */ + if (PRIVATE (a_this)->sac_handler + && PRIVATE (a_this)->sac_handler->start_font_face) { + PRIVATE (a_this)->sac_handler->start_font_face + (PRIVATE (a_this)->sac_handler, &location); + } + PRIVATE (a_this)->state = TRY_PARSE_FONT_FACE_STATE; + /* + *and resume the parsing. + */ + cr_parser_try_to_skip_spaces_and_comments (a_this); + status = cr_parser_parse_declaration (a_this, &property, + &css_expression, &important); + if (status == CR_OK) { + /* + *here, call the relevant SAC handler. + */ + cr_term_ref (css_expression); + if (PRIVATE (a_this)->sac_handler && + PRIVATE (a_this)->sac_handler->property) { + PRIVATE (a_this)->sac_handler->property + (PRIVATE (a_this)->sac_handler, + property, css_expression, important); + } + ENSURE_PARSING_COND (css_expression && property); + } + /*free the data structures allocated during last parsing. */ + if (property) { + cr_string_destroy (property); + property = NULL; + } + if (css_expression) { + cr_term_unref (css_expression); + css_expression = NULL; + } + for (;;) { + PEEK_NEXT_CHAR (a_this, &next_char); + if (next_char == ';') { + READ_NEXT_CHAR (a_this, &cur_char); + } else { + break; + } + cr_parser_try_to_skip_spaces_and_comments (a_this); + status = cr_parser_parse_declaration (a_this, + &property, + &css_expression, + &important); + if (status != CR_OK) + break; + /* + *here, call the relevant SAC handler. + */ + cr_term_ref (css_expression); + if (PRIVATE (a_this)->sac_handler->property) { + PRIVATE (a_this)->sac_handler->property + (PRIVATE (a_this)->sac_handler, + property, css_expression, important); + } + /* + *Then, free the data structures allocated during + *last parsing. + */ + if (property) { + cr_string_destroy (property); + property = NULL; + } + if (css_expression) { + cr_term_unref (css_expression); + css_expression = NULL; + } + } + cr_parser_try_to_skip_spaces_and_comments (a_this); + READ_NEXT_CHAR (a_this, &cur_char); + ENSURE_PARSING_COND (cur_char == '}'); + /* + *here, call the relevant SAC handler. + */ + if (PRIVATE (a_this)->sac_handler->end_font_face) { + PRIVATE (a_this)->sac_handler->end_font_face + (PRIVATE (a_this)->sac_handler); + } + cr_parser_try_to_skip_spaces_and_comments (a_this); + + if (token) { + cr_token_destroy (token); + token = NULL; + } + cr_parser_clear_errors (a_this); + PRIVATE (a_this)->state = FONT_FACE_PARSED_STATE; + return CR_OK; + + error: + if (token) { + cr_token_destroy (token); + token = NULL; + } + if (property) { + cr_string_destroy (property); + property = NULL; + } + if (css_expression) { + cr_term_destroy (css_expression); + css_expression = NULL; + } + cr_tknzr_set_cur_pos (PRIVATE (a_this)->tknzr, &init_pos); + return status; +} + +/** + * cr_parser_parse: + *@a_this: the current instance of #CRParser. + * + *Parses the data that comes from the + *input previously associated to the current instance of + *#CRParser. + * + *Returns CR_OK upon successful completion, an error code otherwise. + */ +enum CRStatus +cr_parser_parse (CRParser * a_this) +{ + enum CRStatus status = CR_ERROR; + + g_return_val_if_fail (a_this && PRIVATE (a_this) + && PRIVATE (a_this)->tknzr, CR_BAD_PARAM_ERROR); + + if (PRIVATE (a_this)->use_core_grammar == FALSE) { + status = cr_parser_parse_stylesheet (a_this); + } else { + status = cr_parser_parse_stylesheet_core (a_this); + } + + return status; +} + +/** + * cr_parser_set_tknzr: + * @a_this: the current instance of #CRParser; + * @a_tknzr: the new tokenizer. + * + * Returns CR_OK upon successful completion, an error code otherwise. + */ +enum CRStatus +cr_parser_set_tknzr (CRParser * a_this, CRTknzr * a_tknzr) +{ + g_return_val_if_fail (a_this && PRIVATE (a_this), CR_BAD_PARAM_ERROR); + + if (PRIVATE (a_this)->tknzr) { + cr_tknzr_unref (PRIVATE (a_this)->tknzr); + } + + PRIVATE (a_this)->tknzr = a_tknzr; + + if (a_tknzr) + cr_tknzr_ref (a_tknzr); + + return CR_OK; +} + +/** + * cr_parser_get_tknzr: + *@a_this: the current instance of #CRParser + *@a_tknzr: out parameter. The returned tokenizer + * + *Getter of the parser's underlying tokenizer + * + *Returns CR_OK upon successful completion, an error code + *otherwise + */ +enum CRStatus +cr_parser_get_tknzr (CRParser * a_this, CRTknzr ** a_tknzr) +{ + g_return_val_if_fail (a_this && PRIVATE (a_this) + && a_tknzr, CR_BAD_PARAM_ERROR); + + *a_tknzr = PRIVATE (a_this)->tknzr; + return CR_OK; +} + +/** + * cr_parser_get_parsing_location: + *@a_this: the current instance of #CRParser + *@a_loc: the parsing location to get. + * + *Gets the current parsing location. + * + *Returns CR_OK upon successful completion, an error code + *otherwise. + */ +enum CRStatus +cr_parser_get_parsing_location (CRParser const *a_this, + CRParsingLocation *a_loc) +{ + g_return_val_if_fail (a_this + && PRIVATE (a_this) + && a_loc, CR_BAD_PARAM_ERROR) ; + + return cr_tknzr_get_parsing_location + (PRIVATE (a_this)->tknzr, a_loc) ; +} + +/** + * cr_parser_parse_buf: + *@a_this: the current instance of #CRparser + *@a_buf: the input buffer + *@a_len: the length of the input buffer + *@a_enc: the encoding of the buffer + * + *Parses a stylesheet from a buffer + * + *Returns CR_OK upon successful completion, an error code otherwise. + */ +enum CRStatus +cr_parser_parse_buf (CRParser * a_this, + const guchar * a_buf, + gulong a_len, enum CREncoding a_enc) +{ + enum CRStatus status = CR_ERROR; + CRTknzr *tknzr = NULL; + + g_return_val_if_fail (a_this && PRIVATE (a_this) + && a_buf, CR_BAD_PARAM_ERROR); + + tknzr = cr_tknzr_new_from_buf ((guchar*)a_buf, a_len, a_enc, FALSE); + + g_return_val_if_fail (tknzr != NULL, CR_ERROR); + + status = cr_parser_set_tknzr (a_this, tknzr); + g_return_val_if_fail (status == CR_OK, CR_ERROR); + + status = cr_parser_parse (a_this); + + return status; +} + +/** + * cr_parser_destroy: + *@a_this: the current instance of #CRParser to + *destroy. + * + *Destroys the current instance + *of #CRParser. + */ +void +cr_parser_destroy (CRParser * a_this) +{ + g_return_if_fail (a_this && PRIVATE (a_this)); + + if (PRIVATE (a_this)->tknzr) { + if (cr_tknzr_unref (PRIVATE (a_this)->tknzr) == TRUE) + PRIVATE (a_this)->tknzr = NULL; + } + + if (PRIVATE (a_this)->sac_handler) { + cr_doc_handler_unref (PRIVATE (a_this)->sac_handler); + PRIVATE (a_this)->sac_handler = NULL; + } + + if (PRIVATE (a_this)->err_stack) { + cr_parser_clear_errors (a_this); + PRIVATE (a_this)->err_stack = NULL; + } + + if (PRIVATE (a_this)) { + g_free (PRIVATE (a_this)); + PRIVATE (a_this) = NULL; + } + + if (a_this) { + g_free (a_this); + a_this = NULL; /*useless. Just for the sake of coherence */ + } +} diff --git a/src/st/croco/cr-parser.h b/src/st/croco/cr-parser.h new file mode 100644 index 0000000..6dce943 --- /dev/null +++ b/src/st/croco/cr-parser.h @@ -0,0 +1,128 @@ +/* -*- Mode: C; indent-tabs-mode:nil; c-basic-offset: 8-*- */ + +/* + * This file is part of The Croco Library + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of version 2.1 of the GNU Lesser General Public + * License as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 + * USA + * + * Author: Dodji Seketeli + * See COPYRIGHTS file for copyrights information. + */ + +#ifndef __CR_PARSER_H__ +#define __CR_PARSER_H__ + +#include <glib.h> +#include "cr-input.h" +#include "cr-tknzr.h" +#include "cr-utils.h" +#include "cr-doc-handler.h" + +G_BEGIN_DECLS + +/** + *@file + *The declaration file + *of the #CRParser class. + */ +typedef struct _CRParser CRParser ; +typedef struct _CRParserPriv CRParserPriv ; + + +/** + *The implementation of + *the SAC parser. + *The Class is opaque + *and must be manipulated through + *the provided methods. + */ +struct _CRParser { + CRParserPriv *priv ; +} ; + + +CRParser * cr_parser_new (CRTknzr *a_tknzr) ; + +CRParser * cr_parser_new_from_buf (guchar *a_buf, gulong a_len, + enum CREncoding a_enc, + gboolean a_free_buf) ; + +CRParser * cr_parser_new_from_file (const guchar *a_file_uri, + enum CREncoding a_enc) ; + +CRParser * cr_parser_new_from_input (CRInput *a_input) ; + +enum CRStatus cr_parser_set_tknzr (CRParser *a_this, CRTknzr *a_tknzr) ; + +enum CRStatus cr_parser_get_tknzr (CRParser *a_this, CRTknzr **a_tknzr) ; + +enum CRStatus cr_parser_get_parsing_location (CRParser const *a_this, CRParsingLocation *a_loc) ; + +enum CRStatus cr_parser_try_to_skip_spaces_and_comments (CRParser *a_this) ; + + +enum CRStatus cr_parser_set_sac_handler (CRParser *a_this, + CRDocHandler *a_handler) ; + +enum CRStatus cr_parser_get_sac_handler (CRParser *a_this, + CRDocHandler **a_handler) ; + +enum CRStatus cr_parser_set_use_core_grammar (CRParser *a_this, + gboolean a_use_core_grammar) ; +enum CRStatus cr_parser_get_use_core_grammar (CRParser const *a_this, + gboolean *a_use_core_grammar) ; + +enum CRStatus cr_parser_parse (CRParser *a_this) ; + +enum CRStatus cr_parser_parse_file (CRParser *a_this, + const guchar *a_file_uri, + enum CREncoding a_enc) ; + +enum CRStatus cr_parser_parse_buf (CRParser *a_this, const guchar *a_buf, + gulong a_len, enum CREncoding a_enc) ; + +enum CRStatus cr_parser_set_default_sac_handler (CRParser *a_this) ; + +enum CRStatus cr_parser_parse_term (CRParser *a_this, CRTerm **a_term) ; + +enum CRStatus cr_parser_parse_expr (CRParser *a_this, CRTerm **a_expr) ; + +enum CRStatus cr_parser_parse_prio (CRParser *a_this, CRString **a_prio) ; + +enum CRStatus cr_parser_parse_declaration (CRParser *a_this, CRString **a_property, + CRTerm **a_expr, gboolean *a_important) ; + +enum CRStatus cr_parser_parse_statement_core (CRParser *a_this) ; + +enum CRStatus cr_parser_parse_ruleset (CRParser *a_this) ; + +enum CRStatus cr_parser_parse_import (CRParser *a_this, GList ** a_media_list, + CRString **a_import_string, + CRParsingLocation *a_location) ; + +enum CRStatus cr_parser_parse_media (CRParser *a_this) ; + +enum CRStatus cr_parser_parse_page (CRParser *a_this) ; + +enum CRStatus cr_parser_parse_charset (CRParser *a_this, CRString **a_value, + CRParsingLocation *a_charset_sym_location) ; + +enum CRStatus cr_parser_parse_font_face (CRParser *a_this) ; + +void cr_parser_destroy (CRParser *a_this) ; + +G_END_DECLS + +#endif /*__CR_PARSER_H__*/ diff --git a/src/st/croco/cr-parsing-location.c b/src/st/croco/cr-parsing-location.c new file mode 100644 index 0000000..2b40974 --- /dev/null +++ b/src/st/croco/cr-parsing-location.c @@ -0,0 +1,171 @@ +/* -*- Mode: C; indent-tabs-mode: nil; c-basic-offset: 8 -*- */ + +/* + * This file is part of The Croco Library + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of version 2.1 of the GNU Lesser General Public + * License as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 + * USA + * + * Author: Dodji Seketeli. + * See the COPYRIGHTS file for copyright information. + */ + +#include <string.h> +#include "cr-parsing-location.h" + +/** + *@CRParsingLocation: + * + *Definition of the #CRparsingLocation class. + */ + + +/** + * cr_parsing_location_new: + *Instantiates a new parsing location. + * + *Returns the newly instantiated #CRParsingLocation. + *Must be freed by cr_parsing_location_destroy() + */ +CRParsingLocation * +cr_parsing_location_new (void) +{ + CRParsingLocation * result = NULL ; + + result = g_try_malloc (sizeof (CRParsingLocation)) ; + if (!result) { + cr_utils_trace_info ("Out of memory error") ; + return NULL ; + } + cr_parsing_location_init (result) ; + return result ; +} + +/** + * cr_parsing_location_init: + *@a_this: the current instance of #CRParsingLocation. + * + *Initializes the an instance of #CRparsingLocation. + * + *Returns CR_OK upon successful completion, an error code otherwise. + */ +enum CRStatus +cr_parsing_location_init (CRParsingLocation *a_this) +{ + g_return_val_if_fail (a_this, CR_BAD_PARAM_ERROR) ; + + memset (a_this, 0, sizeof (CRParsingLocation)) ; + return CR_OK ; +} + +/** + * cr_parsing_location_copy: + *@a_to: the destination of the copy. + *Must be allocated by the caller. + *@a_from: the source of the copy. + * + *Copies an instance of CRParsingLocation into another one. + * + *Returns CR_OK upon successful completion, an error code + *otherwise. + */ +enum CRStatus +cr_parsing_location_copy (CRParsingLocation *a_to, + CRParsingLocation const *a_from) +{ + g_return_val_if_fail (a_to && a_from, CR_BAD_PARAM_ERROR) ; + + memcpy (a_to, a_from, sizeof (CRParsingLocation)) ; + return CR_OK ; +} + +/** + * cr_parsing_location_to_string: + *@a_this: the current instance of #CRParsingLocation. + *@a_mask: a bitmap that defines which parts of the + *parsing location are to be serialized (line, column or byte offset) + * + *Returns the serialized string or NULL in case of an error. + */ +gchar * +cr_parsing_location_to_string (CRParsingLocation const *a_this, + enum CRParsingLocationSerialisationMask a_mask) +{ + GString *result = NULL ; + gchar *str = NULL ; + + g_return_val_if_fail (a_this, NULL) ; + + if (!a_mask) { + a_mask = DUMP_LINE | DUMP_COLUMN | DUMP_BYTE_OFFSET ; + } + result =g_string_new (NULL) ; + if (!result) + return NULL ; + if (a_mask & DUMP_LINE) { + g_string_append_printf (result, "line:%d ", + a_this->line) ; + } + if (a_mask & DUMP_COLUMN) { + g_string_append_printf (result, "column:%d ", + a_this->column) ; + } + if (a_mask & DUMP_BYTE_OFFSET) { + g_string_append_printf (result, "byte offset:%d ", + a_this->byte_offset) ; + } + if (result->len) { + str = g_string_free (result, FALSE) ; + } else { + g_string_free (result, TRUE) ; + } + return str ; +} + +/** + * cr_parsing_location_dump: + * @a_this: current instance of #CRParsingLocation + * @a_mask: the serialization mask. + * @a_fp: the file pointer to dump the parsing location to. + */ +void +cr_parsing_location_dump (CRParsingLocation const *a_this, + enum CRParsingLocationSerialisationMask a_mask, + FILE *a_fp) +{ + gchar *str = NULL ; + + g_return_if_fail (a_this && a_fp) ; + str = cr_parsing_location_to_string (a_this, a_mask) ; + if (str) { + fprintf (a_fp, "%s", str) ; + g_free (str) ; + str = NULL ; + } +} + +/** + * cr_parsing_location_destroy: + *@a_this: the current instance of #CRParsingLocation. Must + *have been allocated with cr_parsing_location_new(). + * + *Destroys the current instance of #CRParsingLocation + */ +void +cr_parsing_location_destroy (CRParsingLocation *a_this) +{ + g_return_if_fail (a_this) ; + g_free (a_this) ; +} + diff --git a/src/st/croco/cr-parsing-location.h b/src/st/croco/cr-parsing-location.h new file mode 100644 index 0000000..b8064a5 --- /dev/null +++ b/src/st/croco/cr-parsing-location.h @@ -0,0 +1,70 @@ +/* -*- Mode: C; indent-tabs-mode: nil; c-basic-offset: 8 -*- */ + +/* + * This file is part of The Croco Library + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of version 2.1 of the GNU Lesser General Public + * License as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 + * USA + * + * Author: Dodji Seketeli. + * See the COPYRIGHTS file for copyright information. + */ + +#ifndef __CR_PARSING_LOCATION_H__ +#define __CR_PARSING_LOCATION_H__ + +#include "cr-utils.h" + +G_BEGIN_DECLS + +/** + *@file + *The declaration of the CRParsingLocation + *object. This object keeps track of line/column/byte offset/ + *at which the parsing of a given CSS construction appears. + */ + +typedef struct _CRParsingLocation CRParsingLocation; +struct _CRParsingLocation { + guint line ; + guint column ; + guint byte_offset ; +} ; + + +enum CRParsingLocationSerialisationMask { + DUMP_LINE = 1, + DUMP_COLUMN = 1 << 1, + DUMP_BYTE_OFFSET = 1 << 2 +} ; + +CRParsingLocation * cr_parsing_location_new (void) ; + +enum CRStatus cr_parsing_location_init (CRParsingLocation *a_this) ; + +enum CRStatus cr_parsing_location_copy (CRParsingLocation *a_to, + CRParsingLocation const *a_from) ; + +gchar * cr_parsing_location_to_string (CRParsingLocation const *a_this, + enum CRParsingLocationSerialisationMask a_mask) ; +void cr_parsing_location_dump (CRParsingLocation const *a_this, + enum CRParsingLocationSerialisationMask a_mask, + FILE *a_fp) ; + +void cr_parsing_location_destroy (CRParsingLocation *a_this) ; + + + +G_END_DECLS +#endif diff --git a/src/st/croco/cr-prop-list.c b/src/st/croco/cr-prop-list.c new file mode 100644 index 0000000..03c4478 --- /dev/null +++ b/src/st/croco/cr-prop-list.c @@ -0,0 +1,404 @@ +/* + * This file is part of The Croco Library + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of version 2.1 of the GNU Lesser General Public + * License as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 + * USA + * + * Author: Dodji Seketeli + * See COPYRIGHTS file for copyrights information. + */ + +#include <string.h> +#include "cr-prop-list.h" + +#define PRIVATE(a_obj) (a_obj)->priv + +struct _CRPropListPriv { + CRString *prop; + CRDeclaration *decl; + CRPropList *next; + CRPropList *prev; +}; + +static CRPropList *cr_prop_list_allocate (void); + +/** + *Default allocator of CRPropList + *@return the newly allocated CRPropList or NULL + *if an error arises. + */ +static CRPropList * +cr_prop_list_allocate (void) +{ + CRPropList *result = NULL; + + result = g_try_malloc (sizeof (CRPropList)); + if (!result) { + cr_utils_trace_info ("could not allocate CRPropList"); + return NULL; + } + memset (result, 0, sizeof (CRPropList)); + PRIVATE (result) = g_try_malloc (sizeof (CRPropListPriv)); + if (!result) { + cr_utils_trace_info ("could not allocate CRPropListPriv"); + g_free (result); + return NULL; + } + memset (PRIVATE (result), 0, sizeof (CRPropListPriv)); + return result; +} + +/**************** + *public methods + ***************/ + +/** + * cr_prop_list_append: + *@a_this: the current instance of #CRPropList + *@a_to_append: the property list to append + * + *Appends a property list to the current one. + * + *Returns the resulting prop list, or NULL if an error + *occurred + */ +CRPropList * +cr_prop_list_append (CRPropList * a_this, CRPropList * a_to_append) +{ + CRPropList *cur = NULL; + + g_return_val_if_fail (a_to_append, NULL); + + if (!a_this) + return a_to_append; + + /*go fetch the last element of the list */ + for (cur = a_this; + cur && PRIVATE (cur) && PRIVATE (cur)->next; + cur = PRIVATE (cur)->next) ; + g_return_val_if_fail (cur, NULL); + PRIVATE (cur)->next = a_to_append; + PRIVATE (a_to_append)->prev = cur; + return a_this; +} + +/** + * cr_prop_list_append2: + *Appends a pair of prop/declaration to + *the current prop list. + *@a_this: the current instance of #CRPropList + *@a_prop: the property to consider + *@a_decl: the declaration to consider + * + *Returns the resulting property list, or NULL in case + *of an error. + */ +CRPropList * +cr_prop_list_append2 (CRPropList * a_this, + CRString * a_prop, + CRDeclaration * a_decl) +{ + CRPropList *list = NULL, + *result = NULL; + + g_return_val_if_fail (a_prop && a_decl, NULL); + + list = cr_prop_list_allocate (); + g_return_val_if_fail (list && PRIVATE (list), NULL); + + PRIVATE (list)->prop = a_prop; + PRIVATE (list)->decl = a_decl; + + result = cr_prop_list_append (a_this, list); + return result; +} + +/** + * cr_prop_list_prepend: + *@a_this: the current instance of #CRPropList + *@a_to_prepend: the new list to prepend. + * + *Prepends a list to the current list + *Returns the new properties list. + */ +CRPropList * +cr_prop_list_prepend (CRPropList * a_this, CRPropList * a_to_prepend) +{ + CRPropList *cur = NULL; + + g_return_val_if_fail (a_to_prepend, NULL); + + if (!a_this) + return a_to_prepend; + + for (cur = a_to_prepend; cur && PRIVATE (cur)->next; + cur = PRIVATE (cur)->next) ; + g_return_val_if_fail (cur, NULL); + PRIVATE (cur)->next = a_this; + PRIVATE (a_this)->prev = cur; + return a_to_prepend; +} + +/** + * cr_prop_list_prepend2: + *@a_this: the current instance of #CRPropList + *@a_prop_name: property name to append + *@a_decl: the property value to append. + * + *Prepends a property to a list of properties + * + *Returns the new property list. + */ +CRPropList * +cr_prop_list_prepend2 (CRPropList * a_this, + CRString * a_prop_name, CRDeclaration * a_decl) +{ + CRPropList *list = NULL, + *result = NULL; + + g_return_val_if_fail (a_this && PRIVATE (a_this) + && a_prop_name && a_decl, NULL); + + list = cr_prop_list_allocate (); + g_return_val_if_fail (list, NULL); + PRIVATE (list)->prop = a_prop_name; + PRIVATE (list)->decl = a_decl; + result = cr_prop_list_prepend (a_this, list); + return result; +} + +/** + * cr_prop_list_set_prop: + *@a_this: the current instance of #CRPropList + *@a_prop: the property to set + * + *Sets the property of a CRPropList + */ +enum CRStatus +cr_prop_list_set_prop (CRPropList * a_this, CRString * a_prop) +{ + g_return_val_if_fail (a_this && PRIVATE (a_this) + && a_prop, CR_BAD_PARAM_ERROR); + + PRIVATE (a_this)->prop = a_prop; + return CR_OK; +} + +/** + * cr_prop_list_get_prop: + *@a_this: the current instance of #CRPropList + *@a_prop: out parameter. The returned property + * + *Getter of the property associated to the current instance + *of #CRPropList + * + *Returns CR_OK upon successful completion, an error code + *otherwise. + */ +enum CRStatus +cr_prop_list_get_prop (CRPropList const * a_this, CRString ** a_prop) +{ + g_return_val_if_fail (a_this && PRIVATE (a_this) + && a_prop, CR_BAD_PARAM_ERROR); + + *a_prop = PRIVATE (a_this)->prop; + return CR_OK; +} + +/** + * cr_prop_list_set_decl: + * @a_this: the current instance of #CRPropList + * @a_decl: the new property value. + * + * Returns CR_OK upon successful completion, an error code otherwise. + */ +enum CRStatus +cr_prop_list_set_decl (CRPropList * a_this, CRDeclaration * a_decl) +{ + g_return_val_if_fail (a_this && PRIVATE (a_this) + && a_decl, CR_BAD_PARAM_ERROR); + + PRIVATE (a_this)->decl = a_decl; + return CR_OK; +} + +/** + * cr_prop_list_get_decl: + * @a_this: the current instance of #CRPropList + * @a_decl: out parameter. The property value + * + * Returns CR_OK upon successful completion. + */ +enum CRStatus +cr_prop_list_get_decl (CRPropList const * a_this, CRDeclaration ** a_decl) +{ + g_return_val_if_fail (a_this && PRIVATE (a_this) + && a_decl, CR_BAD_PARAM_ERROR); + + *a_decl = PRIVATE (a_this)->decl; + return CR_OK; +} + +/** + * cr_prop_list_lookup_prop: + *@a_this: the current instance of #CRPropList + *@a_prop: the property to lookup + *@a_prop_list: out parameter. The property/declaration + *pair found (if and only if the function returned code if CR_OK) + * + *Lookup a given property/declaration pair + * + *Returns CR_OK if a prop/decl pair has been found, + *CR_VALUE_NOT_FOUND_ERROR if not, or an error code if something + *bad happens. + */ +enum CRStatus +cr_prop_list_lookup_prop (CRPropList * a_this, + CRString * a_prop, CRPropList ** a_pair) +{ + CRPropList *cur = NULL; + + g_return_val_if_fail (a_prop && a_pair, CR_BAD_PARAM_ERROR); + + if (!a_this) + return CR_VALUE_NOT_FOUND_ERROR; + + g_return_val_if_fail (PRIVATE (a_this), CR_BAD_PARAM_ERROR); + + for (cur = a_this; cur; cur = PRIVATE (cur)->next) { + if (PRIVATE (cur)->prop + && PRIVATE (cur)->prop->stryng + && PRIVATE (cur)->prop->stryng->str + && a_prop->stryng + && a_prop->stryng->str + && !strcmp (PRIVATE (cur)->prop->stryng->str, + a_prop->stryng->str)) + break; + } + + if (cur) { + *a_pair = cur; + return CR_OK; + } + + return CR_VALUE_NOT_FOUND_ERROR; +} + +/** + * cr_prop_list_get_next: + *@a_this: the current instance of CRPropList + * + *Gets the next prop/decl pair in the list + * + *Returns the next prop/declaration pair of the list, + *or NULL if we reached end of list (or if an error occurs) + */ +CRPropList * +cr_prop_list_get_next (CRPropList * a_this) +{ + g_return_val_if_fail (a_this && PRIVATE (a_this), NULL); + + return PRIVATE (a_this)->next; +} + +/** + * cr_prop_list_get_prev: + *@a_this: the current instance of CRPropList + * + *Gets the previous prop/decl pair in the list + * + *Returns the previous prop/declaration pair of the list, + *or NULL if we reached end of list (or if an error occurs) + */ +CRPropList * +cr_prop_list_get_prev (CRPropList * a_this) +{ + g_return_val_if_fail (a_this && PRIVATE (a_this), NULL); + + return PRIVATE (a_this)->prev; +} + +/** + * cr_prop_list_unlink: + *@a_this: the current list of prop/decl pairs + *@a_pair: the prop/decl pair to unlink. + * + *Unlinks a prop/decl pair from the list + * + *Returns the new list or NULL in case of an error. + */ +CRPropList * +cr_prop_list_unlink (CRPropList * a_this, CRPropList * a_pair) +{ + CRPropList *prev = NULL, + *next = NULL; + + g_return_val_if_fail (a_this && PRIVATE (a_this) && a_pair, NULL); + + /*some sanity checks */ + if (PRIVATE (a_pair)->next) { + next = PRIVATE (a_pair)->next; + g_return_val_if_fail (PRIVATE (next), NULL); + g_return_val_if_fail (PRIVATE (next)->prev == a_pair, NULL); + } + if (PRIVATE (a_pair)->prev) { + prev = PRIVATE (a_pair)->prev; + g_return_val_if_fail (PRIVATE (prev), NULL); + g_return_val_if_fail (PRIVATE (prev)->next == a_pair, NULL); + } + if (prev) { + PRIVATE (prev)->next = next; + } + if (next) { + PRIVATE (next)->prev = prev; + } + PRIVATE (a_pair)->prev = PRIVATE (a_pair)->next = NULL; + if (a_this == a_pair) { + if (next) + return next; + return NULL; + } + return a_this; +} + +/** + * cr_prop_list_destroy: + * @a_this: the current instance of #CRPropList + */ +void +cr_prop_list_destroy (CRPropList * a_this) +{ + CRPropList *tail = NULL, + *cur = NULL; + + g_return_if_fail (a_this && PRIVATE (a_this)); + + for (tail = a_this; + tail && PRIVATE (tail) && PRIVATE (tail)->next; + tail = cr_prop_list_get_next (tail)) ; + g_return_if_fail (tail); + + cur = tail; + + while (cur) { + tail = PRIVATE (cur)->prev; + if (tail && PRIVATE (tail)) + PRIVATE (tail)->next = NULL; + PRIVATE (cur)->prev = NULL; + g_free (PRIVATE (cur)); + PRIVATE (cur) = NULL; + g_free (cur); + cur = tail; + } +} diff --git a/src/st/croco/cr-prop-list.h b/src/st/croco/cr-prop-list.h new file mode 100644 index 0000000..797ba43 --- /dev/null +++ b/src/st/croco/cr-prop-list.h @@ -0,0 +1,80 @@ +/* + * This file is part of The Croco Library + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of version 2.1 of the GNU Lesser General Public + * License as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 + * USA + * + * Author: Dodji Seketeli + * See COPYRIGHTS file for copyrights information. + */ + +#ifndef __CR_PROP_LIST_H__ +#define __CR_PROP_LIST_H__ + +#include "cr-utils.h" +#include "cr-declaration.h" +#include "cr-string.h" + +G_BEGIN_DECLS + +typedef struct _CRPropList CRPropList ; +typedef struct _CRPropListPriv CRPropListPriv ; + +struct _CRPropList +{ + CRPropListPriv * priv; +} ; + +CRPropList * cr_prop_list_append (CRPropList *a_this, + CRPropList *a_to_append) ; + +CRPropList * cr_prop_list_append2 (CRPropList *a_this, + CRString *a_prop, + CRDeclaration *a_decl) ; + +CRPropList * cr_prop_list_prepend (CRPropList *a_this, + CRPropList *a_to_append) ; + +CRPropList * cr_prop_list_prepend2 (CRPropList *a_this, + CRString *a_prop, + CRDeclaration *a_decl) ; + +enum CRStatus cr_prop_list_set_prop (CRPropList *a_this, + CRString *a_prop) ; + +enum CRStatus cr_prop_list_get_prop (CRPropList const *a_this, + CRString **a_prop) ; + +enum CRStatus cr_prop_list_lookup_prop (CRPropList *a_this, + CRString *a_prop, + CRPropList**a_pair) ; + +CRPropList * cr_prop_list_get_next (CRPropList *a_this) ; + +CRPropList * cr_prop_list_get_prev (CRPropList *a_this) ; + +enum CRStatus cr_prop_list_set_decl (CRPropList *a_this, + CRDeclaration *a_decl); + +enum CRStatus cr_prop_list_get_decl (CRPropList const *a_this, + CRDeclaration **a_decl) ; + +CRPropList * cr_prop_list_unlink (CRPropList *a_this, + CRPropList *a_pair) ; + +void cr_prop_list_destroy (CRPropList *a_this) ; + +G_END_DECLS + +#endif /*__CR_PROP_LIST_H__*/ diff --git a/src/st/croco/cr-pseudo.c b/src/st/croco/cr-pseudo.c new file mode 100644 index 0000000..f81f9a6 --- /dev/null +++ b/src/st/croco/cr-pseudo.c @@ -0,0 +1,166 @@ +/* -*- Mode: C; indent-tabs-mode:nil; c-basic-offset: 8-*- */ + +/* + * This file is part of The Croco Library + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of version 2.1 of the GNU Lesser General Public + * License as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 + * USA + * + * Author: Dodji Seketeli + * See COPYRIGHTS file for copyright information. + */ + +#include "cr-pseudo.h" + +/** + *@CRPseudo: + *The definition of the #CRPseudo class. + */ + +/** + * cr_pseudo_new: + *Constructor of the #CRPseudo class. + * + *Returns the newly build instance. + */ +CRPseudo * +cr_pseudo_new (void) +{ + CRPseudo *result = NULL; + + result = g_malloc0 (sizeof (CRPseudo)); + + return result; +} + +/** + * cr_pseudo_to_string: + * @a_this: the current instance of #CRPseud. + * + * Returns the serialized pseudo. Caller must free the returned + * string using g_free(). + */ +guchar * +cr_pseudo_to_string (CRPseudo const * a_this) +{ + guchar *result = NULL; + GString *str_buf = NULL; + + g_return_val_if_fail (a_this, NULL); + + str_buf = g_string_new (NULL); + + if (a_this->type == IDENT_PSEUDO) { + guchar *name = NULL; + + if (a_this->name == NULL) { + goto error; + } + + name = (guchar *) g_strndup (a_this->name->stryng->str, + a_this->name->stryng->len); + + if (name) { + g_string_append (str_buf, (const gchar *) name); + g_free (name); + name = NULL; + } + } else if (a_this->type == FUNCTION_PSEUDO) { + guchar *name = NULL, + *arg = NULL; + + if (a_this->name == NULL) + goto error; + + name = (guchar *) g_strndup (a_this->name->stryng->str, + a_this->name->stryng->len); + + if (a_this->extra) { + arg = (guchar *) g_strndup (a_this->extra->stryng->str, + a_this->extra->stryng->len); + } + + if (name) { + g_string_append_printf (str_buf, "%s(", name); + g_free (name); + name = NULL; + + if (arg) { + g_string_append (str_buf, (const gchar *) arg); + g_free (arg); + arg = NULL; + } + + g_string_append_c (str_buf, ')'); + } + } + + if (str_buf) { + result = (guchar *) g_string_free (str_buf, FALSE); + str_buf = NULL; + } + + return result; + + error: + g_string_free (str_buf, TRUE); + return NULL; +} + +/** + * cr_pseudo_dump: + *@a_this: the current instance of pseudo + *@a_fp: the destination file pointer. + * + *Dumps the pseudo to a file. + * + */ +void +cr_pseudo_dump (CRPseudo const * a_this, FILE * a_fp) +{ + guchar *tmp_str = NULL; + + if (a_this) { + tmp_str = cr_pseudo_to_string (a_this); + if (tmp_str) { + fprintf (a_fp, "%s", tmp_str); + g_free (tmp_str); + tmp_str = NULL; + } + } +} + +/** + * cr_pseudo_destroy: + *@a_this: the current instance to destroy. + * + *destructor of the #CRPseudo class. + */ +void +cr_pseudo_destroy (CRPseudo * a_this) +{ + g_return_if_fail (a_this); + + if (a_this->name) { + cr_string_destroy (a_this->name); + a_this->name = NULL; + } + + if (a_this->extra) { + cr_string_destroy (a_this->extra); + a_this->extra = NULL; + } + + g_free (a_this); +} diff --git a/src/st/croco/cr-pseudo.h b/src/st/croco/cr-pseudo.h new file mode 100644 index 0000000..8917da4 --- /dev/null +++ b/src/st/croco/cr-pseudo.h @@ -0,0 +1,64 @@ +/* -*- Mode: C; indent-tabs-mode:nil; c-basic-offset: 8-*- */ + +/* + * This file is part of The Croco Library + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of version 2.1 of the GNU Lesser General Public + * License as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 + * USA + * + * See COPYRIGHTS file for copyright information + */ + +#ifndef __CR_PSEUDO_H__ +#define __CR_PSEUDO_H__ + +#include <stdio.h> +#include <glib.h> +#include "cr-attr-sel.h" +#include "cr-parsing-location.h" + +G_BEGIN_DECLS + +enum CRPseudoType +{ + IDENT_PSEUDO = 0, + FUNCTION_PSEUDO +} ; + +typedef struct _CRPseudo CRPseudo ; + +/** + *The CRPseudo Class. + *Abstract a "pseudo" as defined by the css2 spec + *in appendix D.1 . + */ +struct _CRPseudo +{ + enum CRPseudoType type ; + CRString *name ; + CRString *extra ; + CRParsingLocation location ; +} ; + +CRPseudo * cr_pseudo_new (void) ; + +guchar * cr_pseudo_to_string (CRPseudo const *a_this) ; + +void cr_pseudo_dump (CRPseudo const *a_this, FILE *a_fp) ; + +void cr_pseudo_destroy (CRPseudo *a_this) ; + +G_END_DECLS + +#endif /*__CR_PSEUDO_H__*/ diff --git a/src/st/croco/cr-rgb.c b/src/st/croco/cr-rgb.c new file mode 100644 index 0000000..a2b478f --- /dev/null +++ b/src/st/croco/cr-rgb.c @@ -0,0 +1,604 @@ +/* -*- Mode: C; indent-tabs-mode:nil; c-basic-offset: 8-*- */ + +/* + * This file is part of The Croco Library + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of version 2.1 of the GNU Lesser General Public + * License as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 + * USA + * + * Author: Dodji Seketeli + * See COPYRIGHTS file for copyrights information. + */ + +#include "config.h" + +#include <stdio.h> +#include <string.h> +#include <stdlib.h> +#include "cr-rgb.h" +#include "cr-term.h" +#include "cr-parser.h" + +static const CRRgb gv_standard_colors[] = { + {(const guchar*)"aliceblue", 240, 248, 255, FALSE, {0,0,0}}, + {(const guchar*)"antiquewhite", 250, 235, 215, FALSE, {0,0,0}}, + {(const guchar*)"aqua", 0, 255, 255, FALSE, {0,0,0}}, + {(const guchar*)"aquamarine", 127, 255, 212, FALSE, {0,0,0}}, + {(const guchar*)"azure", 240, 255, 255, FALSE, {0,0,0}}, + {(const guchar*)"beige", 245, 245, 220, FALSE, {0,0,0}}, + {(const guchar*)"bisque", 255, 228, 196, FALSE, {0,0,0}}, + {(const guchar*)"black", 0, 0, 0, FALSE, {0,0,0}}, + {(const guchar*)"blanchedalmond", 255, 235, 205, FALSE, {0,0,0}}, + {(const guchar*)"blue", 0, 0, 255, FALSE, {0,0,0}}, + {(const guchar*)"blueviolet", 138, 43, 226, FALSE, {0,0,0}}, + {(const guchar*)"brown", 165, 42, 42, FALSE, {0,0,0}}, + {(const guchar*)"burlywood", 222, 184, 135, FALSE, {0,0,0}}, + {(const guchar*)"cadetblue", 95, 158, 160, FALSE, {0,0,0}}, + {(const guchar*)"chartreuse", 127, 255, 0, FALSE, {0,0,0}}, + {(const guchar*)"chocolate", 210, 105, 30, FALSE, {0,0,0}}, + {(const guchar*)"coral", 255, 127, 80, FALSE, {0,0,0}}, + {(const guchar*)"cornflowerblue", 100, 149, 237, FALSE, {0,0,0}}, + {(const guchar*)"cornsilk", 255, 248, 220, FALSE, {0,0,0}}, + {(const guchar*)"crimson", 220, 20, 60, FALSE, {0,0,0}}, + {(const guchar*)"cyan", 0, 255, 255, FALSE, {0,0,0}}, + {(const guchar*)"darkblue", 0, 0, 139, FALSE, {0,0,0}}, + {(const guchar*)"darkcyan", 0, 139, 139, FALSE, {0,0,0}}, + {(const guchar*)"darkgoldenrod", 184, 134, 11, FALSE, {0,0,0}}, + {(const guchar*)"darkgray", 169, 169, 169, FALSE, {0,0,0}}, + {(const guchar*)"darkgreen", 0, 100, 0, FALSE, {0,0,0}}, + {(const guchar*)"darkgrey", 169, 169, 169, FALSE, {0,0,0}}, + {(const guchar*)"darkkhaki", 189, 183, 107, FALSE, {0,0,0}}, + {(const guchar*)"darkmagenta", 139, 0, 139, FALSE, {0,0,0}}, + {(const guchar*)"darkolivegreen", 85, 107, 47, FALSE, {0,0,0}}, + {(const guchar*)"darkorange", 255, 140, 0, FALSE, {0,0,0}}, + {(const guchar*)"darkorchid", 153, 50, 204, FALSE, {0,0,0}}, + {(const guchar*)"darkred", 139, 0, 0, FALSE, {0,0,0}}, + {(const guchar*)"darksalmon", 233, 150, 122, FALSE, {0,0,0}}, + {(const guchar*)"darkseagreen", 143, 188, 143, FALSE, {0,0,0}}, + {(const guchar*)"darkslateblue", 72, 61, 139, FALSE, {0,0,0}}, + {(const guchar*)"darkslategray", 47, 79, 79, FALSE, {0,0,0}}, + {(const guchar*)"darkslategrey", 47, 79, 79, FALSE, {0,0,0}}, + {(const guchar*)"darkturquoise", 0, 206, 209, FALSE, {0,0,0}}, + {(const guchar*)"darkviolet", 148, 0, 211, FALSE, {0,0,0}}, + {(const guchar*)"deeppink", 255, 20, 147, FALSE, {0,0,0}}, + {(const guchar*)"deepskyblue", 0, 191, 255, FALSE, {0,0,0}}, + {(const guchar*)"dimgray", 105, 105, 105, FALSE, {0,0,0}}, + {(const guchar*)"dimgrey", 105, 105, 105, FALSE, {0,0,0}}, + {(const guchar*)"dodgerblue", 30, 144, 255, FALSE, {0,0,0}}, + {(const guchar*)"firebrick", 178, 34, 34, FALSE, {0,0,0}}, + {(const guchar*)"floralwhite", 255, 250, 240, FALSE, {0,0,0}}, + {(const guchar*)"forestgreen", 34, 139, 34, FALSE, {0,0,0}}, + {(const guchar*)"fuchsia", 255, 0, 255, FALSE, {0,0,0}}, + {(const guchar*)"gainsboro", 220, 220, 220, FALSE, {0,0,0}}, + {(const guchar*)"ghostwhite", 248, 248, 255, FALSE, {0,0,0}}, + {(const guchar*)"gold", 255, 215, 0, FALSE, {0,0,0}}, + {(const guchar*)"goldenrod", 218, 165, 32, FALSE, {0,0,0}}, + {(const guchar*)"gray", 128, 128, 128, FALSE, {0,0,0}}, + {(const guchar*)"green", 0, 128, 0, FALSE, {0,0,0}}, + {(const guchar*)"greenyellow", 173, 255, 47, FALSE, {0,0,0}}, + {(const guchar*)"grey", 128, 128, 128, FALSE, {0,0,0}}, + {(const guchar*)"honeydew", 240, 255, 240, FALSE, {0,0,0}}, + {(const guchar*)"hotpink", 255, 105, 180, FALSE, {0,0,0}}, + {(const guchar*)"indianred", 205, 92, 92, FALSE, {0,0,0}}, + {(const guchar*)"indigo", 75, 0, 130, FALSE, {0,0,0}}, + {(const guchar*)"ivory", 255, 255, 240, FALSE, {0,0,0}}, + {(const guchar*)"khaki", 240, 230, 140, FALSE, {0,0,0}}, + {(const guchar*)"lavender", 230, 230, 250, FALSE, {0,0,0}}, + {(const guchar*)"lavenderblush", 255, 240, 245, FALSE, {0,0,0}}, + {(const guchar*)"lawngreen", 124, 252, 0, FALSE, {0,0,0}}, + {(const guchar*)"lemonchiffon", 255, 250, 205, FALSE, {0,0,0}}, + {(const guchar*)"lightblue", 173, 216, 230, FALSE, {0,0,0}}, + {(const guchar*)"lightcoral", 240, 128, 128, FALSE, {0,0,0}}, + {(const guchar*)"lightcyan", 224, 255, 255, FALSE, {0,0,0}}, + {(const guchar*)"lightgoldenrodyellow", 250, 250, 210, FALSE, {0,0,0}}, + {(const guchar*)"lightgray", 211, 211, 211, FALSE, {0,0,0}}, + {(const guchar*)"lightgreen", 144, 238, 144, FALSE, {0,0,0}}, + {(const guchar*)"lightgrey", 211, 211, 211, FALSE, {0,0,0}}, + {(const guchar*)"lightpink", 255, 182, 193, FALSE, {0,0,0}}, + {(const guchar*)"lightsalmon", 255, 160, 122, FALSE, {0,0,0}}, + {(const guchar*)"lightseagreen", 32, 178, 170, FALSE, {0,0,0}}, + {(const guchar*)"lightskyblue", 135, 206, 250, FALSE, {0,0,0}}, + {(const guchar*)"lightslategray", 119, 136, 153, FALSE, {0,0,0}}, + {(const guchar*)"lightslategrey", 119, 136, 153, FALSE, {0,0,0}}, + {(const guchar*)"lightsteelblue", 176, 196, 222, FALSE, {0,0,0}}, + {(const guchar*)"lightyellow", 255, 255, 224, FALSE, {0,0,0}}, + {(const guchar*)"lime", 0, 255, 0, FALSE, {0,0,0}}, + {(const guchar*)"limegreen", 50, 205, 50, FALSE, {0,0,0}}, + {(const guchar*)"linen", 250, 240, 230, FALSE, {0,0,0}}, + {(const guchar*)"magenta", 255, 0, 255, FALSE, {0,0,0}}, + {(const guchar*)"maroon", 128, 0, 0, FALSE, {0,0,0}}, + {(const guchar*)"mediumaquamarine", 102, 205, 170, FALSE, {0,0,0}}, + {(const guchar*)"mediumblue", 0, 0, 205, FALSE, {0,0,0}}, + {(const guchar*)"mediumorchid", 186, 85, 211, FALSE, {0,0,0}}, + {(const guchar*)"mediumpurple", 147, 112, 219, FALSE, {0,0,0}}, + {(const guchar*)"mediumseagreen", 60, 179, 113, FALSE, {0,0,0}}, + {(const guchar*)"mediumslateblue", 123, 104, 238, FALSE, {0,0,0}}, + {(const guchar*)"mediumspringgreen", 0, 250, 154, FALSE, {0,0,0}}, + {(const guchar*)"mediumturquoise", 72, 209, 204, FALSE, {0,0,0}}, + {(const guchar*)"mediumvioletred", 199, 21, 133, FALSE, {0,0,0}}, + {(const guchar*)"midnightblue", 25, 25, 112, FALSE, {0,0,0}}, + {(const guchar*)"mintcream", 245, 255, 250, FALSE, {0,0,0}}, + {(const guchar*)"mistyrose", 255, 228, 225, FALSE, {0,0,0}}, + {(const guchar*)"moccasin", 255, 228, 181, FALSE, {0,0,0}}, + {(const guchar*)"navajowhite", 255, 222, 173, FALSE, {0,0,0}}, + {(const guchar*)"navy", 0, 0, 128, FALSE, {0,0,0}}, + {(const guchar*)"oldlace", 253, 245, 230, FALSE, {0,0,0}}, + {(const guchar*)"olive", 128, 128, 0, FALSE, {0,0,0}}, + {(const guchar*)"olivedrab", 107, 142, 35, FALSE, {0,0,0}}, + {(const guchar*)"orange", 255, 165, 0, FALSE, {0,0,0}}, + {(const guchar*)"orangered", 255, 69, 0, FALSE, {0,0,0}}, + {(const guchar*)"orchid", 218, 112, 214, FALSE, {0,0,0}}, + {(const guchar*)"palegoldenrod", 238, 232, 170, FALSE, {0,0,0}}, + {(const guchar*)"palegreen", 152, 251, 152, FALSE, {0,0,0}}, + {(const guchar*)"paleturquoise", 175, 238, 238, FALSE, {0,0,0}}, + {(const guchar*)"palevioletred", 219, 112, 147, FALSE, {0,0,0}}, + {(const guchar*)"papayawhip", 255, 239, 213, FALSE, {0,0,0}}, + {(const guchar*)"peachpuff", 255, 218, 185, FALSE, {0,0,0}}, + {(const guchar*)"peru", 205, 133, 63, FALSE, {0,0,0}}, + {(const guchar*)"pink", 255, 192, 203, FALSE, {0,0,0}}, + {(const guchar*)"plum", 221, 160, 221, FALSE, {0,0,0}}, + {(const guchar*)"powderblue", 176, 224, 230, FALSE, {0,0,0}}, + {(const guchar*)"purple", 128, 0, 128, FALSE, {0,0,0}}, + {(const guchar*)"red", 255, 0, 0, FALSE, {0,0,0}}, + {(const guchar*)"rosybrown", 188, 143, 143, FALSE, {0,0,0}}, + {(const guchar*)"royalblue", 65, 105, 225, FALSE, {0,0,0}}, + {(const guchar*)"saddlebrown", 139, 69, 19, FALSE, {0,0,0}}, + {(const guchar*)"salmon", 250, 128, 114, FALSE, {0,0,0}}, + {(const guchar*)"sandybrown", 244, 164, 96, FALSE, {0,0,0}}, + {(const guchar*)"seagreen", 46, 139, 87, FALSE, {0,0,0}}, + {(const guchar*)"seashell", 255, 245, 238, FALSE, {0,0,0}}, + {(const guchar*)"sienna", 160, 82, 45, FALSE, {0,0,0}}, + {(const guchar*)"silver", 192, 192, 192, FALSE, {0,0,0}}, + {(const guchar*)"skyblue", 135, 206, 235, FALSE, {0,0,0}}, + {(const guchar*)"slateblue", 106, 90, 205, FALSE, {0,0,0}}, + {(const guchar*)"slategray", 112, 128, 144, FALSE, {0,0,0}}, + {(const guchar*)"slategrey", 112, 128, 144, FALSE, {0,0,0}}, + {(const guchar*)"snow", 255, 250, 250, FALSE, {0,0,0}}, + {(const guchar*)"springgreen", 0, 255, 127, FALSE, {0,0,0}}, + {(const guchar*)"steelblue", 70, 130, 180, FALSE, {0,0,0}}, + {(const guchar*)"tan", 210, 180, 140, FALSE, {0,0,0}}, + {(const guchar*)"teal", 0, 128, 128, FALSE, {0,0,0}}, + {(const guchar*)"thistle", 216, 191, 216, FALSE, {0,0,0}}, + {(const guchar*)"tomato", 255, 99, 71, FALSE, {0,0,0}}, + {(const guchar*)"turquoise", 64, 224, 208, FALSE, {0,0,0}}, + {(const guchar*)"violet", 238, 130, 238, FALSE, {0,0,0}}, + {(const guchar*)"wheat", 245, 222, 179, FALSE, {0,0,0}}, + {(const guchar*)"white", 255, 255, 255, FALSE, {0,0,0}}, + {(const guchar*)"whitesmoke", 245, 245, 245, FALSE, {0,0,0}}, + {(const guchar*)"yellow", 255, 255, 0, FALSE, {0,0,0}}, + {(const guchar*)"yellowgreen", 154, 205, 50, FALSE, {0,0,0}} +}; + +/** + * cr_rgb_new: + * + *The default constructor of #CRRgb. + * + *Returns the newly built instance of #CRRgb + */ +CRRgb * +cr_rgb_new (void) +{ + CRRgb *result = NULL; + + result = g_try_malloc (sizeof (CRRgb)); + + if (result == NULL) { + cr_utils_trace_info ("No more memory"); + return NULL; + } + + memset (result, 0, sizeof (CRRgb)); + + return result; +} + +/** + * cr_rgb_new_with_vals: + *@a_red: the red component of the color. + *@a_green: the green component of the color. + *@a_blue: the blue component of the color. + *@a_unit: the unit of the rgb values. + *(either percentage or integer values) + * + *A constructor of #CRRgb. + * + *Returns the newly built instance of #CRRgb. + */ +CRRgb * +cr_rgb_new_with_vals (gulong a_red, gulong a_green, + gulong a_blue, gboolean a_is_percentage) +{ + CRRgb *result = NULL; + + result = cr_rgb_new (); + + g_return_val_if_fail (result, NULL); + + result->red = a_red; + result->green = a_green; + result->blue = a_blue; + result->is_percentage = a_is_percentage; + + return result; +} + +/** + * cr_rgb_to_string: + *@a_this: the instance of #CRRgb to serialize. + * + *Serializes the rgb into a zero terminated string. + * + *Returns the zero terminated string containing the serialized + *rgb. MUST BE FREED by the caller using g_free(). + */ +guchar * +cr_rgb_to_string (CRRgb const * a_this) +{ + guchar *result = NULL; + GString *str_buf = NULL; + + str_buf = g_string_new (NULL); + g_return_val_if_fail (str_buf, NULL); + + if (a_this->is_percentage == 1) { + g_string_append_printf (str_buf, "%ld", a_this->red); + + g_string_append (str_buf, "%, "); + + g_string_append_printf (str_buf, "%ld", a_this->green); + g_string_append (str_buf, "%, "); + + g_string_append_printf (str_buf, "%ld", a_this->blue); + g_string_append_c (str_buf, '%'); + } else { + g_string_append_printf (str_buf, "%ld", a_this->red); + g_string_append (str_buf, ", "); + + g_string_append_printf (str_buf, "%ld", a_this->green); + g_string_append (str_buf, ", "); + + g_string_append_printf (str_buf, "%ld", a_this->blue); + } + + if (str_buf) { + result = (guchar *) g_string_free (str_buf, FALSE); + } + + return result; +} + +/** + * cr_rgb_dump: + *@a_this: the "this pointer" of + *the current instance of #CRRgb. + *@a_fp: the destination file pointer. + * + *Dumps the current instance of #CRRgb + *to a file. + */ +void +cr_rgb_dump (CRRgb const * a_this, FILE * a_fp) +{ + guchar *str = NULL; + + g_return_if_fail (a_this); + + str = cr_rgb_to_string (a_this); + + if (str) { + fprintf (a_fp, "%s", str); + g_free (str); + str = NULL; + } +} + +/** + * cr_rgb_compute_from_percentage: + *@a_this: the current instance of #CRRgb + * + *If the rgb values are expressed in percentage, + *compute their real value. + * + *Returns CR_OK upon successful completion, an error code otherwise. + */ +enum CRStatus +cr_rgb_compute_from_percentage (CRRgb * a_this) +{ + g_return_val_if_fail (a_this, CR_BAD_PARAM_ERROR); + + if (a_this->is_percentage == FALSE) + return CR_OK; + a_this->red = a_this->red * 255 / 100; + a_this->green = a_this->green * 255 / 100; + a_this->blue = a_this->blue * 255 / 100; + a_this->is_percentage = FALSE; + return CR_OK; +} + +/** + * cr_rgb_set: + *@a_this: the current instance of #CRRgb. + *@a_red: the red value. + *@a_green: the green value. + *@a_blue: the blue value. + * + *Sets rgb values to the RGB. + * + *Returns CR_OK upon successful completion, an error code + *otherwise. + */ +enum CRStatus +cr_rgb_set (CRRgb * a_this, gulong a_red, + gulong a_green, gulong a_blue, gboolean a_is_percentage) +{ + g_return_val_if_fail (a_this, CR_BAD_PARAM_ERROR); + if (a_is_percentage != FALSE) { + g_return_val_if_fail (a_red <= 100 + && a_green <= 100 + && a_blue <= 100, CR_BAD_PARAM_ERROR); + } + + a_this->is_percentage = a_is_percentage; + + a_this->red = a_red; + a_this->green = a_green; + a_this->blue = a_blue; + return CR_OK; +} + +/** + * cr_rgb_set_from_rgb: + *@a_this: the current instance of #CRRgb. + *@a_rgb: the rgb to "copy" + * + *Sets the rgb from an other one. + * + *Returns CR_OK upon successful completion, an error code otherwise. + */ +enum CRStatus +cr_rgb_set_from_rgb (CRRgb * a_this, CRRgb const * a_rgb) +{ + g_return_val_if_fail (a_this && a_rgb, CR_BAD_PARAM_ERROR); + + cr_rgb_copy (a_this, a_rgb) ; + + return CR_OK; +} + +static int +cr_rgb_color_name_compare (const void *a, + const void *b) +{ + const char *a_color_name = a; + const CRRgb *rgb = b; + + return g_ascii_strcasecmp (a_color_name, (const char *) rgb->name); +} + +/** + * cr_rgb_set_from_name: + * @a_this: the current instance of #CRRgb + * @a_color_name: the color name + * + * Returns CR_OK upon successful completion, an error code otherwise. + */ +enum CRStatus +cr_rgb_set_from_name (CRRgb * a_this, const guchar * a_color_name) +{ + enum CRStatus status = CR_OK; + CRRgb *result; + + g_return_val_if_fail (a_this && a_color_name, CR_BAD_PARAM_ERROR); + + result = bsearch (a_color_name, + gv_standard_colors, + G_N_ELEMENTS (gv_standard_colors), + sizeof (gv_standard_colors[0]), + cr_rgb_color_name_compare); + if (result != NULL) + cr_rgb_set_from_rgb (a_this, result); + else + status = CR_UNKNOWN_TYPE_ERROR; + + return status; +} + +/** + * cr_rgb_set_from_hex_str: + * @a_this: the current instance of #CRRgb + * @a_hex: the hexadecimal value to set. + * + * Returns CR_OK upon successful completion. + */ +enum CRStatus +cr_rgb_set_from_hex_str (CRRgb * a_this, const guchar * a_hex) +{ + enum CRStatus status = CR_OK; + gulong i = 0; + guchar colors[3] = { 0 }; + + g_return_val_if_fail (a_this && a_hex, CR_BAD_PARAM_ERROR); + + if (strlen ((const char *) a_hex) == 3) { + for (i = 0; i < 3; i++) { + if (a_hex[i] >= '0' && a_hex[i] <= '9') { + colors[i] = a_hex[i] - '0'; + colors[i] = (colors[i] << 4) | colors[i]; + } else if (a_hex[i] >= 'a' && a_hex[i] <= 'z') { + colors[i] = 10 + a_hex[i] - 'a'; + colors[i] = (colors[i] << 4) | colors[i]; + } else if (a_hex[i] >= 'A' && a_hex[i] <= 'Z') { + colors[i] = 10 + a_hex[i] - 'A'; + colors[i] = (colors[i] << 4) | colors[i]; + } else { + status = CR_UNKNOWN_TYPE_ERROR; + } + } + } else if (strlen ((const char *) a_hex) == 6) { + for (i = 0; i < 6; i++) { + if (a_hex[i] >= '0' && a_hex[i] <= '9') { + colors[i / 2] <<= 4; + colors[i / 2] |= a_hex[i] - '0'; + status = CR_OK; + } else if (a_hex[i] >= 'a' && a_hex[i] <= 'z') { + colors[i / 2] <<= 4; + colors[i / 2] |= 10 + a_hex[i] - 'a'; + status = CR_OK; + } else if (a_hex[i] >= 'A' && a_hex[i] <= 'Z') { + colors[i / 2] <<= 4; + colors[i / 2] |= 10 + a_hex[i] - 'A'; + status = CR_OK; + } else { + status = CR_UNKNOWN_TYPE_ERROR; + } + } + } else { + status = CR_UNKNOWN_TYPE_ERROR; + } + + if (status == CR_OK) { + status = cr_rgb_set (a_this, colors[0], + colors[1], colors[2], FALSE); + } + return status; +} + +/** + * cr_rgb_set_from_term: + *@a_this: the instance of #CRRgb to set + *@a_value: the terminal from which to set + * + *Set the rgb from a terminal symbol + * + * Returns CR_OK upon successful completion, an error code otherwise. + */ +enum CRStatus +cr_rgb_set_from_term (CRRgb *a_this, const struct _CRTerm *a_value) +{ + enum CRStatus status = CR_OK ; + g_return_val_if_fail (a_this && a_value, + CR_BAD_PARAM_ERROR) ; + + switch(a_value->type) { + case TERM_RGB: + if (a_value->content.rgb) { + cr_rgb_set_from_rgb + (a_this, a_value->content.rgb) ; + } + break ; + case TERM_IDENT: + if (a_value->content.str + && a_value->content.str->stryng + && a_value->content.str->stryng->str) { + status = cr_rgb_set_from_name + (a_this, + (const guchar *) a_value->content.str->stryng->str) ; + } else { + cr_utils_trace_info + ("a_value has NULL string value") ; + } + break ; + case TERM_HASH: + if (a_value->content.str + && a_value->content.str->stryng + && a_value->content.str->stryng->str) { + status = cr_rgb_set_from_hex_str + (a_this, + (const guchar *) a_value->content.str->stryng->str) ; + } else { + cr_utils_trace_info + ("a_value has NULL string value") ; + } + break ; + default: + status = CR_UNKNOWN_TYPE_ERROR ; + } + return status ; +} + +enum CRStatus +cr_rgb_copy (CRRgb *a_dest, CRRgb const *a_src) +{ + g_return_val_if_fail (a_dest && a_src, + CR_BAD_PARAM_ERROR) ; + + memcpy (a_dest, a_src, sizeof (CRRgb)) ; + return CR_OK ; +} + +/** + * cr_rgb_destroy: + *@a_this: the "this pointer" of the + *current instance of #CRRgb. + * + *Destructor of #CRRgb. + */ +void +cr_rgb_destroy (CRRgb * a_this) +{ + g_return_if_fail (a_this); + g_free (a_this); +} + +/** + * cr_rgb_parse_from_buf: + *@a_str: a string that contains a color description + *@a_enc: the encoding of a_str + * + *Parses a text buffer that contains a rgb color + * + *Returns the parsed color, or NULL in case of error + */ +CRRgb * +cr_rgb_parse_from_buf (const guchar *a_str, + enum CREncoding a_enc) +{ + enum CRStatus status = CR_OK ; + CRTerm *value = NULL ; + CRParser * parser = NULL; + CRRgb *result = NULL; + + g_return_val_if_fail (a_str, NULL); + + parser = cr_parser_new_from_buf ((guchar *) a_str, strlen ((const char *) a_str), a_enc, FALSE); + + g_return_val_if_fail (parser, NULL); + + status = cr_parser_try_to_skip_spaces_and_comments (parser) ; + if (status != CR_OK) + goto cleanup; + + status = cr_parser_parse_term (parser, &value); + if (status != CR_OK) + goto cleanup; + + result = cr_rgb_new (); + if (!result) + goto cleanup; + + status = cr_rgb_set_from_term (result, value); + +cleanup: + if (parser) { + cr_parser_destroy (parser); + parser = NULL; + } + if (value) { + cr_term_destroy(value); + value = NULL; + } + return result ; +} + diff --git a/src/st/croco/cr-rgb.h b/src/st/croco/cr-rgb.h new file mode 100644 index 0000000..a77e309 --- /dev/null +++ b/src/st/croco/cr-rgb.h @@ -0,0 +1,84 @@ +/* -*- Mode: C; indent-tabs-mode:nil; c-basic-offset: 8-*- */ + +/* + * This file is part of The Croco Library + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of version 2.1 of the GNU Lesser General Public + * License as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 + * USA + * + * see COPYRIGHTS file for copyright information. + */ + +#ifndef __CR_RGB_H__ +#define __CR_RGB_H__ + +#include <stdio.h> +#include <glib.h> +#include "cr-utils.h" +#include "cr-parsing-location.h" + +G_BEGIN_DECLS + + +typedef struct _CRRgb CRRgb ; +struct _CRRgb +{ + /* + *the unit of the rgb. + *Either NO_UNIT (integer) or + *UNIT_PERCENTAGE (percentage). + */ + const guchar *name ; + glong red ; + glong green ; + glong blue ; + gboolean is_percentage ; + CRParsingLocation location ; +} ; + +CRRgb * cr_rgb_new (void) ; + +CRRgb * cr_rgb_new_with_vals (gulong a_red, gulong a_green, + gulong a_blue, gboolean a_is_percentage) ; + +CRRgb *cr_rgb_parse_from_buf(const guchar *a_str, + enum CREncoding a_enc); + +enum CRStatus cr_rgb_compute_from_percentage (CRRgb *a_this) ; + +enum CRStatus cr_rgb_set (CRRgb *a_this, gulong a_red, + gulong a_green, gulong a_blue, + gboolean a_is_percentage) ; + +enum CRStatus cr_rgb_copy (CRRgb *a_dest, CRRgb const *a_src) ; + +enum CRStatus cr_rgb_set_from_rgb (CRRgb *a_this, CRRgb const *a_rgb) ; + +enum CRStatus cr_rgb_set_from_name (CRRgb *a_this, const guchar *a_color_name) ; + +enum CRStatus cr_rgb_set_from_hex_str (CRRgb *a_this, const guchar * a_hex_value) ; + +struct _CRTerm; + +enum CRStatus cr_rgb_set_from_term (CRRgb *a_this, const struct _CRTerm *a_value); + +guchar * cr_rgb_to_string (CRRgb const *a_this) ; + +void cr_rgb_dump (CRRgb const *a_this, FILE *a_fp) ; + +void cr_rgb_destroy (CRRgb *a_this) ; + +G_END_DECLS + +#endif /*__CR_RGB_H__*/ diff --git a/src/st/croco/cr-selector.c b/src/st/croco/cr-selector.c new file mode 100644 index 0000000..c9aad43 --- /dev/null +++ b/src/st/croco/cr-selector.c @@ -0,0 +1,305 @@ +/* -*- Mode: C; indent-tabs-mode: nil; c-basic-offset: 8 -*- */ + +/* + * This file is part of The Croco Library + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of version 2.1 of the GNU Lesser General Public + * License as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 + * USA + * + * See COPYRIGHTS file for copyright information. + */ + +#include <string.h> +#include "cr-selector.h" +#include "cr-parser.h" + +/** + * cr_selector_new: + * + *@a_simple_sel: the initial simple selector list + *of the current instance of #CRSelector. + * + *Creates a new instance of #CRSelector. + * + *Returns the newly built instance of #CRSelector, or + *NULL in case of failure. + */ +CRSelector * +cr_selector_new (CRSimpleSel * a_simple_sel) +{ + CRSelector *result = NULL; + + result = g_try_malloc (sizeof (CRSelector)); + if (!result) { + cr_utils_trace_info ("Out of memory"); + return NULL; + } + memset (result, 0, sizeof (CRSelector)); + result->simple_sel = a_simple_sel; + return result; +} + +CRSelector * +cr_selector_parse_from_buf (const guchar * a_char_buf, enum CREncoding a_enc) +{ + CRParser *parser = NULL; + + g_return_val_if_fail (a_char_buf, NULL); + + parser = cr_parser_new_from_buf ((guchar*)a_char_buf, strlen ((const char *) a_char_buf), + a_enc, FALSE); + g_return_val_if_fail (parser, NULL); + + return NULL; +} + +/** + * cr_selector_append: + * + *@a_this: the current instance of #CRSelector. + *@a_new: the instance of #CRSelector to be appended. + * + *Appends a new instance of #CRSelector to the current selector list. + * + *Returns the new list. + */ +CRSelector * +cr_selector_append (CRSelector * a_this, CRSelector * a_new) +{ + CRSelector *cur = NULL; + + if (!a_this) { + return a_new; + } + + /*walk forward the list headed by a_this to get the list tail */ + for (cur = a_this; cur && cur->next; cur = cur->next) ; + + cur->next = a_new; + a_new->prev = cur; + + return a_this; +} + +/** + * cr_selector_prepend: + * + *@a_this: the current instance of #CRSelector list. + *@a_new: the instance of #CRSelector. + * + *Prepends an element to the #CRSelector list. + * + *Returns the new list. + */ +CRSelector * +cr_selector_prepend (CRSelector * a_this, CRSelector * a_new) +{ + CRSelector *cur = NULL; + + a_new->next = a_this; + a_this->prev = a_new; + + for (cur = a_new; cur && cur->prev; cur = cur->prev) ; + + return cur; +} + +/** + * cr_selector_append_simple_sel: + * + *@a_this: the current instance of #CRSelector. + *@a_simple_sel: the simple selector to append. + * + *append a simple selector to the current #CRSelector list. + * + *Returns the new list or NULL in case of failure. + */ +CRSelector * +cr_selector_append_simple_sel (CRSelector * a_this, + CRSimpleSel * a_simple_sel) +{ + CRSelector *selector = NULL; + + selector = cr_selector_new (a_simple_sel); + g_return_val_if_fail (selector, NULL); + + return cr_selector_append (a_this, selector); +} + +guchar * +cr_selector_to_string (CRSelector const * a_this) +{ + guchar *result = NULL; + GString *str_buf = NULL; + + str_buf = g_string_new (NULL); + g_return_val_if_fail (str_buf, NULL); + + if (a_this) { + CRSelector const *cur = NULL; + + for (cur = a_this; cur; cur = cur->next) { + if (cur->simple_sel) { + guchar *tmp_str = NULL; + + tmp_str = cr_simple_sel_to_string + (cur->simple_sel); + + if (tmp_str) { + if (cur->prev) + g_string_append (str_buf, + ", "); + + g_string_append (str_buf, (const gchar *) tmp_str); + + g_free (tmp_str); + tmp_str = NULL; + } + } + } + } + + if (str_buf) { + result = (guchar *) g_string_free (str_buf, FALSE); + str_buf = NULL; + } + + return result; +} + +/** + * cr_selector_dump: + * + *@a_this: the current instance of #CRSelector. + *@a_fp: the destination file. + * + *Serializes the current instance of #CRSelector to a file. + */ +void +cr_selector_dump (CRSelector const * a_this, FILE * a_fp) +{ + guchar *tmp_buf = NULL; + + if (a_this) { + tmp_buf = cr_selector_to_string (a_this); + if (tmp_buf) { + fprintf (a_fp, "%s", tmp_buf); + g_free (tmp_buf); + tmp_buf = NULL; + } + } +} + +/** + * cr_selector_ref: + * + *@a_this: the current instance of #CRSelector. + * + *Increments the ref count of the current instance + *of #CRSelector. + */ +void +cr_selector_ref (CRSelector * a_this) +{ + g_return_if_fail (a_this); + + a_this->ref_count++; +} + +/** + * cr_selector_unref: + * + *@a_this: the current instance of #CRSelector. + * + *Decrements the ref count of the current instance of + *#CRSelector. + *If the ref count reaches zero, the current instance of + *#CRSelector is destroyed. + * + *Returns TRUE if this function destroyed the current instance + *of #CRSelector, FALSE otherwise. + */ +gboolean +cr_selector_unref (CRSelector * a_this) +{ + g_return_val_if_fail (a_this, FALSE); + + if (a_this->ref_count) { + a_this->ref_count--; + } + + if (a_this->ref_count == 0) { + cr_selector_destroy (a_this); + return TRUE; + } + + return FALSE; +} + +/** + * cr_selector_destroy: + * + *@a_this: the current instance of #CRSelector. + * + *Destroys the selector list. + */ +void +cr_selector_destroy (CRSelector * a_this) +{ + CRSelector *cur = NULL; + + g_return_if_fail (a_this); + + /* + *go and get the list tail. In the same time, free + *all the simple selectors contained in the list. + */ + for (cur = a_this; cur && cur->next; cur = cur->next) { + if (cur->simple_sel) { + cr_simple_sel_destroy (cur->simple_sel); + cur->simple_sel = NULL; + } + } + + if (cur) { + if (cur->simple_sel) { + cr_simple_sel_destroy (cur->simple_sel); + cur->simple_sel = NULL; + } + } + + /*in case the list has only one element */ + if (cur && !cur->prev) { + g_free (cur); + return; + } + + /*walk backward the list and free each "next element" */ + for (cur = cur->prev; cur && cur->prev; cur = cur->prev) { + if (cur->next) { + g_free (cur->next); + cur->next = NULL; + } + } + + if (!cur) + return; + + if (cur->next) { + g_free (cur->next); + cur->next = NULL; + } + + g_free (cur); +} diff --git a/src/st/croco/cr-selector.h b/src/st/croco/cr-selector.h new file mode 100644 index 0000000..dd6a7f7 --- /dev/null +++ b/src/st/croco/cr-selector.h @@ -0,0 +1,95 @@ +/* -*- Mode: C; indent-tabs-mode: nil; c-basic-offset: 8 -*- */ + +/* + * This file is part of The Croco Library + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of version 2.1 of the GNU Lesser General Public + * License as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 + * USA + * + * + * Author: Dodji Seketeli + * See COPYRIGHTS file for copyright information. + */ + +#ifndef __CR_SELECTOR_H__ +#define __CR_SELECTOR_H__ + +#include <stdio.h> +#include "cr-utils.h" +#include "cr-simple-sel.h" +#include "cr-parsing-location.h" + +/** + *@file + *The declaration file of the #CRSelector file. + */ + +G_BEGIN_DECLS + +typedef struct _CRSelector CRSelector ; + +/** + *Abstracts a CSS2 selector as defined in the right part + *of the 'ruleset" production in the appendix D.1 of the + *css2 spec. + *It is actually the abstraction of a comma separated list + *of simple selectors list. + *In a css2 file, a selector is a list of simple selectors + *separated by a comma. + *e.g: sel0, sel1, sel2 ... + *Each seln is a simple selector + */ +struct _CRSelector +{ + /** + *A Selection expression. + *It is a list of basic selectors. + *Each basic selector can be either an element + *selector, an id selector, a class selector, an + *attribute selector, an universal selector etc ... + */ + CRSimpleSel *simple_sel ; + + /**The next selector list element*/ + CRSelector *next ; + CRSelector *prev ; + CRParsingLocation location ; + glong ref_count ; +}; + +CRSelector* cr_selector_new (CRSimpleSel *a_sel_expr) ; + +CRSelector * cr_selector_parse_from_buf (const guchar * a_char_buf, + enum CREncoding a_enc) ; + +CRSelector* cr_selector_append (CRSelector *a_this, CRSelector *a_new) ; + +CRSelector* cr_selector_append_simple_sel (CRSelector *a_this, + CRSimpleSel *a_simple_sel) ; + +CRSelector* cr_selector_prepend (CRSelector *a_this, CRSelector *a_new) ; + +guchar * cr_selector_to_string (CRSelector const *a_this) ; + +void cr_selector_dump (CRSelector const *a_this, FILE *a_fp) ; + +void cr_selector_ref (CRSelector *a_this) ; + +gboolean cr_selector_unref (CRSelector *a_this) ; + +void cr_selector_destroy (CRSelector *a_this) ; + +G_END_DECLS + +#endif /*__CR_SELECTOR_H__*/ diff --git a/src/st/croco/cr-simple-sel.c b/src/st/croco/cr-simple-sel.c new file mode 100644 index 0000000..bac8621 --- /dev/null +++ b/src/st/croco/cr-simple-sel.c @@ -0,0 +1,323 @@ +/* -*- Mode: C; indent-tabs-mode:nil; c-basic-offset: 8-*- */ + +/* + * This file is part of The Croco Library + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of version 2.1 of the GNU Lesser General Public + * License as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 + * USA + * + * Author: Dodji Seketeli + * See COPYRIGHTS file for copyright information. + */ + +#include <string.h> +#include <glib.h> +#include "cr-simple-sel.h" + +/** + * cr_simple_sel_new: + * + *The constructor of #CRSimpleSel. + * + *Returns the new instance of #CRSimpleSel. + */ +CRSimpleSel * +cr_simple_sel_new (void) +{ + CRSimpleSel *result = NULL; + + result = g_try_malloc (sizeof (CRSimpleSel)); + if (!result) { + cr_utils_trace_info ("Out of memory"); + return NULL; + } + memset (result, 0, sizeof (CRSimpleSel)); + + return result; +} + +/** + * cr_simple_sel_append_simple_sel: + * + *Appends a simpe selector to the current list of simple selector. + * + *@a_this: the this pointer of the current instance of #CRSimpleSel. + *@a_sel: the simple selector to append. + * + *Returns: the new list upon successful completion, an error code otherwise. + */ +CRSimpleSel * +cr_simple_sel_append_simple_sel (CRSimpleSel * a_this, CRSimpleSel * a_sel) +{ + CRSimpleSel *cur = NULL; + + g_return_val_if_fail (a_sel, NULL); + + if (a_this == NULL) + return a_sel; + + for (cur = a_this; cur->next; cur = cur->next) ; + + cur->next = a_sel; + a_sel->prev = cur; + + return a_this; +} + +/** + * cr_simple_sel_prepend_simple_sel: + * + *@a_this: the this pointer of the current instance of #CRSimpleSel. + *@a_sel: the simple selector to prepend. + * + *Prepends a simple selector to the current list of simple selectors. + * + *Returns the new list upon successful completion, an error code otherwise. + */ +CRSimpleSel * +cr_simple_sel_prepend_simple_sel (CRSimpleSel * a_this, CRSimpleSel * a_sel) +{ + g_return_val_if_fail (a_sel, NULL); + + if (a_this == NULL) + return a_sel; + + a_sel->next = a_this; + a_this->prev = a_sel; + + return a_sel; +} + +guchar * +cr_simple_sel_to_string (CRSimpleSel const * a_this) +{ + GString *str_buf = NULL; + guchar *result = NULL; + + CRSimpleSel const *cur = NULL; + + g_return_val_if_fail (a_this, NULL); + + str_buf = g_string_new (NULL); + for (cur = a_this; cur; cur = cur->next) { + if (cur->name) { + guchar *str = (guchar *) g_strndup (cur->name->stryng->str, + cur->name->stryng->len); + + if (str) { + switch (cur->combinator) { + case COMB_WS: + g_string_append (str_buf, " "); + break; + + case COMB_PLUS: + g_string_append (str_buf, "+"); + break; + + case COMB_GT: + g_string_append (str_buf, ">"); + break; + + default: + break; + } + + g_string_append (str_buf, (const gchar *) str); + g_free (str); + str = NULL; + } + } + + if (cur->add_sel) { + guchar *tmp_str = NULL; + + tmp_str = cr_additional_sel_to_string (cur->add_sel); + if (tmp_str) { + g_string_append (str_buf, (const gchar *) tmp_str); + g_free (tmp_str); + tmp_str = NULL; + } + } + } + + if (str_buf) { + result = (guchar *) g_string_free (str_buf, FALSE); + str_buf = NULL; + } + + return result; +} + + +guchar * +cr_simple_sel_one_to_string (CRSimpleSel const * a_this) +{ + GString *str_buf = NULL; + guchar *result = NULL; + + g_return_val_if_fail (a_this, NULL); + + str_buf = g_string_new (NULL); + if (a_this->name) { + guchar *str = (guchar *) g_strndup (a_this->name->stryng->str, + a_this->name->stryng->len); + + if (str) { + g_string_append_printf (str_buf, "%s", str); + g_free (str); + str = NULL; + } + } + + if (a_this->add_sel) { + guchar *tmp_str = NULL; + + tmp_str = cr_additional_sel_to_string (a_this->add_sel); + if (tmp_str) { + g_string_append_printf + (str_buf, "%s", tmp_str); + g_free (tmp_str); + tmp_str = NULL; + } + } + + if (str_buf) { + result = (guchar *) g_string_free (str_buf, FALSE); + str_buf = NULL; + } + + return result; +} + +/** + * cr_simple_sel_dump: + *@a_this: the current instance of #CRSimpleSel. + *@a_fp: the destination file pointer. + * + *Dumps the selector to a file. + *TODO: add the support of unicode in the dump. + * + *Returns CR_OK upon successful completion, an error code + *otherwise. + */ +enum CRStatus +cr_simple_sel_dump (CRSimpleSel const * a_this, FILE * a_fp) +{ + guchar *tmp_str = NULL; + + g_return_val_if_fail (a_fp, CR_BAD_PARAM_ERROR); + + if (a_this) { + tmp_str = cr_simple_sel_to_string (a_this); + if (tmp_str) { + fprintf (a_fp, "%s", tmp_str); + g_free (tmp_str); + tmp_str = NULL; + } + } + + return CR_OK; +} + +/** + * cr_simple_sel_compute_specificity: + * + *@a_this: the current instance of #CRSimpleSel + * + *Computes the selector (combinator separated list of simple selectors) + *as defined in the css2 spec in chapter 6.4.3 + * + *Returns CR_OK upon successful completion, an error code otherwise. + */ +enum CRStatus +cr_simple_sel_compute_specificity (CRSimpleSel * a_this) +{ + CRAdditionalSel const *cur_add_sel = NULL; + CRSimpleSel const *cur_sel = NULL; + gulong a = 0, + b = 0, + c = 0; + + g_return_val_if_fail (a_this, CR_BAD_PARAM_ERROR); + + for (cur_sel = a_this; cur_sel; cur_sel = cur_sel->next) { + if (cur_sel->type_mask & TYPE_SELECTOR) { + c++; /*hmmh, is this a new language ? */ + } else if (!cur_sel->name + || !cur_sel->name->stryng + || !cur_sel->name->stryng->str) { + if (cur_sel->add_sel->type == + PSEUDO_CLASS_ADD_SELECTOR) { + /* + *this is a pseudo element, and + *the spec says, "ignore pseudo elements". + */ + continue; + } + } + + for (cur_add_sel = cur_sel->add_sel; + cur_add_sel; cur_add_sel = cur_add_sel->next) { + switch (cur_add_sel->type) { + case ID_ADD_SELECTOR: + a++; + break; + + case NO_ADD_SELECTOR: + continue; + + default: + b++; + break; + } + } + } + + /*we suppose a, b and c have 1 to 3 digits */ + a_this->specificity = a * 1000000 + b * 1000 + c; + + return CR_OK; +} + +/** + * cr_simple_sel_destroy: + * + *@a_this: the this pointer of the current instance of #CRSimpleSel. + * + *The destructor of the current instance of + *#CRSimpleSel. + */ +void +cr_simple_sel_destroy (CRSimpleSel * a_this) +{ + g_return_if_fail (a_this); + + if (a_this->name) { + cr_string_destroy (a_this->name); + a_this->name = NULL; + } + + if (a_this->add_sel) { + cr_additional_sel_destroy (a_this->add_sel); + a_this->add_sel = NULL; + } + + if (a_this->next) { + cr_simple_sel_destroy (a_this->next); + } + + if (a_this) { + g_free (a_this); + } +} diff --git a/src/st/croco/cr-simple-sel.h b/src/st/croco/cr-simple-sel.h new file mode 100644 index 0000000..72b15fd --- /dev/null +++ b/src/st/croco/cr-simple-sel.h @@ -0,0 +1,130 @@ +/* -*- Mode: C; indent-tabs-mode:nil; c-basic-offset: 8-*- */ + +/* + * This file is part of The Croco Library + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of version 2.1 of the GNU Lesser General Public + * License as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 + * USA + * + * Author: Dodji Seketeli + * See COPYRIGHTS file for copyright information. + */ + + +#ifndef __CR_SEL_H__ +#define __CR_SEL_H__ + +#include <stdio.h> +#include <glib.h> +#include "cr-additional-sel.h" +#include "cr-parsing-location.h" + +G_BEGIN_DECLS + +/** + *@file + *the declaration of the #CRSimpleSel class. + * + */ +enum Combinator +{ + NO_COMBINATOR, + COMB_WS,/*whitespace: descendent*/ + COMB_PLUS,/*'+': preceded by*/ + COMB_GT/*greater than ('>'): child*/ +} ; + +enum SimpleSelectorType +{ + NO_SELECTOR_TYPE = 0, + UNIVERSAL_SELECTOR = 1, + TYPE_SELECTOR = 1 << 1 +} ; + +typedef struct _CRSimpleSel CRSimpleSel ; + +/** + *The abstraction of a css2 simple selection list + *as defined by the right part of the "selector" production in the + *appendix D.1 of the css2 spec. + *It is basically a list of simple selector, each + *simple selector being separated by a combinator. + * + *In the libcroco's implementation, each simple selector + *is made of at most two parts: + * + *1/An element name or 'type selector' (which can hold a '*' and + *then been called 'universal selector') + * + *2/An additional selector that "specializes" the preceding type or + *universal selector. The additional selector can be either + *an id selector, or a class selector, or an attribute selector. + */ +struct _CRSimpleSel +{ + enum SimpleSelectorType type_mask ; + gboolean is_case_sentive ; + CRString * name ; + /** + *The combinator that separates + *this simple selector from the previous + *one. + */ + enum Combinator combinator ; + + /** + *The additional selector list of the + *current simple selector. + *An additional selector may + *be a class selector, an id selector, + *or an attribute selector. + *Note that this field is a linked list. + */ + CRAdditionalSel *add_sel ; + + /* + *the specificity as specified by + *chapter 6.4.3 of the spec. + */ + gulong specificity ; + + CRSimpleSel *next ; + CRSimpleSel *prev ; + CRParsingLocation location ; +} ; + +CRSimpleSel * cr_simple_sel_new (void) ; + +CRSimpleSel * cr_simple_sel_append_simple_sel (CRSimpleSel *a_this, + CRSimpleSel *a_sel) ; + +CRSimpleSel * cr_simple_sel_prepend_simple_sel (CRSimpleSel *a_this, + CRSimpleSel *a_sel) ; + +guchar * cr_simple_sel_to_string (CRSimpleSel const *a_this) ; + +guchar * cr_simple_sel_one_to_string (CRSimpleSel const * a_this) ; + +enum CRStatus cr_simple_sel_dump (CRSimpleSel const *a_this, FILE *a_fp) ; + +enum CRStatus cr_simple_sel_dump_attr_sel_list (CRSimpleSel const *a_this) ; + +enum CRStatus cr_simple_sel_compute_specificity (CRSimpleSel *a_this) ; + +void cr_simple_sel_destroy (CRSimpleSel *a_this) ; + +G_END_DECLS + + +#endif /*__CR_SIMPLE_SEL_H__*/ diff --git a/src/st/croco/cr-statement.c b/src/st/croco/cr-statement.c new file mode 100644 index 0000000..eaeb49f --- /dev/null +++ b/src/st/croco/cr-statement.c @@ -0,0 +1,2784 @@ +/* -*- Mode: C; indent-tabs-mode: nil; c-basic-offset: 8 -*- */ + +/* + * This file is part of The Croco Library + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of version 2.1 of the GNU Lesser General Public + * License as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 + * USA + * + * Author: Dodji Seketeli. + * See COPYRIGHTS files for copyrights information. + */ + +#include <string.h> +#include "cr-statement.h" +#include "cr-parser.h" + +/** + *@file + *Definition of the #CRStatement class. + */ + +#define DECLARATION_INDENT_NB 2 + +static void cr_statement_clear (CRStatement * a_this); + +static void +parse_font_face_start_font_face_cb (CRDocHandler * a_this, + CRParsingLocation *a_location) +{ + CRStatement *stmt = NULL; + enum CRStatus status = CR_OK; + + stmt = cr_statement_new_at_font_face_rule (NULL, NULL); + g_return_if_fail (stmt); + + status = cr_doc_handler_set_ctxt (a_this, stmt); + g_return_if_fail (status == CR_OK); +} + +static void +parse_font_face_unrecoverable_error_cb (CRDocHandler * a_this) +{ + CRStatement *stmt = NULL; + CRStatement **stmtptr = NULL; + enum CRStatus status = CR_OK; + + g_return_if_fail (a_this); + + stmtptr = &stmt; + status = cr_doc_handler_get_ctxt (a_this, (gpointer *) stmtptr); + if (status != CR_OK) { + cr_utils_trace_info ("Couldn't get parsing context. " + "This may lead to some memory leaks."); + return; + } + if (stmt) { + cr_statement_destroy (stmt); + cr_doc_handler_set_ctxt (a_this, NULL); + return; + } +} + +static void +parse_font_face_property_cb (CRDocHandler * a_this, + CRString * a_name, + CRTerm * a_value, gboolean a_important) +{ + enum CRStatus status = CR_OK; + CRString *name = NULL; + CRDeclaration *decl = NULL; + CRStatement *stmt = NULL; + CRStatement **stmtptr = NULL; + + g_return_if_fail (a_this && a_name); + + stmtptr = &stmt; + status = cr_doc_handler_get_ctxt (a_this, (gpointer *) stmtptr); + g_return_if_fail (status == CR_OK && stmt); + g_return_if_fail (stmt->type == AT_FONT_FACE_RULE_STMT); + + name = cr_string_dup (a_name) ; + g_return_if_fail (name); + decl = cr_declaration_new (stmt, name, a_value); + if (!decl) { + cr_utils_trace_info ("cr_declaration_new () failed."); + goto error; + } + name = NULL; + + stmt->kind.font_face_rule->decl_list = + cr_declaration_append (stmt->kind.font_face_rule->decl_list, + decl); + if (!stmt->kind.font_face_rule->decl_list) + goto error; + decl = NULL; + + error: + if (decl) { + cr_declaration_unref (decl); + decl = NULL; + } + if (name) { + cr_string_destroy (name); + name = NULL; + } +} + +static void +parse_font_face_end_font_face_cb (CRDocHandler * a_this) +{ + CRStatement *result = NULL; + CRStatement **resultptr = NULL; + enum CRStatus status = CR_OK; + + g_return_if_fail (a_this); + + resultptr = &result; + status = cr_doc_handler_get_ctxt (a_this, (gpointer *) resultptr); + g_return_if_fail (status == CR_OK && result); + g_return_if_fail (result->type == AT_FONT_FACE_RULE_STMT); + + status = cr_doc_handler_set_result (a_this, result); + g_return_if_fail (status == CR_OK); +} + +static void +parse_page_start_page_cb (CRDocHandler * a_this, + CRString * a_name, + CRString * a_pseudo_page, + CRParsingLocation *a_location) +{ + CRStatement *stmt = NULL; + enum CRStatus status = CR_OK; + CRString *page_name = NULL, *pseudo_name = NULL ; + + if (a_name) + page_name = cr_string_dup (a_name) ; + if (a_pseudo_page) + pseudo_name = cr_string_dup (a_pseudo_page) ; + + stmt = cr_statement_new_at_page_rule (NULL, NULL, + page_name, + pseudo_name); + page_name = NULL ; + pseudo_name = NULL ; + g_return_if_fail (stmt); + status = cr_doc_handler_set_ctxt (a_this, stmt); + g_return_if_fail (status == CR_OK); +} + +static void +parse_page_unrecoverable_error_cb (CRDocHandler * a_this) +{ + CRStatement *stmt = NULL; + CRStatement **stmtptr = NULL; + enum CRStatus status = CR_OK; + + g_return_if_fail (a_this); + + stmtptr = &stmt; + status = cr_doc_handler_get_ctxt (a_this, (gpointer *) stmtptr); + if (status != CR_OK) { + cr_utils_trace_info ("Couldn't get parsing context. " + "This may lead to some memory leaks."); + return; + } + if (stmt) { + cr_statement_destroy (stmt); + stmt = NULL; + cr_doc_handler_set_ctxt (a_this, NULL); + } +} + +static void +parse_page_property_cb (CRDocHandler * a_this, + CRString * a_name, + CRTerm * a_expression, gboolean a_important) +{ + CRString *name = NULL; + CRStatement *stmt = NULL; + CRStatement **stmtptr = NULL; + CRDeclaration *decl = NULL; + enum CRStatus status = CR_OK; + + stmtptr = &stmt; + status = cr_doc_handler_get_ctxt (a_this, (gpointer *) stmtptr); + g_return_if_fail (status == CR_OK && stmt->type == AT_PAGE_RULE_STMT); + + name = cr_string_dup (a_name); + g_return_if_fail (name); + + decl = cr_declaration_new (stmt, name, a_expression); + g_return_if_fail (decl); + decl->important = a_important; + stmt->kind.page_rule->decl_list = + cr_declaration_append (stmt->kind.page_rule->decl_list, decl); + g_return_if_fail (stmt->kind.page_rule->decl_list); +} + +static void +parse_page_end_page_cb (CRDocHandler * a_this, + CRString * a_name, + CRString * a_pseudo_page) +{ + enum CRStatus status = CR_OK; + CRStatement *stmt = NULL; + CRStatement **stmtptr = NULL; + + stmtptr = &stmt; + status = cr_doc_handler_get_ctxt (a_this, (gpointer *) stmtptr); + g_return_if_fail (status == CR_OK && stmt); + g_return_if_fail (stmt->type == AT_PAGE_RULE_STMT); + + status = cr_doc_handler_set_result (a_this, stmt); + g_return_if_fail (status == CR_OK); +} + +static void +parse_at_media_start_media_cb (CRDocHandler * a_this, + GList * a_media_list, + CRParsingLocation *a_location) +{ + enum CRStatus status = CR_OK; + CRStatement *at_media = NULL; + GList *media_list = NULL; + + g_return_if_fail (a_this && a_this->priv); + + if (a_media_list) { + /*duplicate media list */ + media_list = cr_utils_dup_glist_of_cr_string + (a_media_list); + } + + g_return_if_fail (media_list); + + /*make sure cr_statement_new_at_media_rule works in this case. */ + at_media = cr_statement_new_at_media_rule (NULL, NULL, media_list); + + status = cr_doc_handler_set_ctxt (a_this, at_media); + g_return_if_fail (status == CR_OK); + status = cr_doc_handler_set_result (a_this, at_media); + g_return_if_fail (status == CR_OK); +} + +static void +parse_at_media_unrecoverable_error_cb (CRDocHandler * a_this) +{ + enum CRStatus status = CR_OK; + CRStatement *stmt = NULL; + CRStatement **stmtptr = NULL; + + g_return_if_fail (a_this); + + stmtptr = &stmt; + status = cr_doc_handler_get_result (a_this, (gpointer *) stmtptr); + if (status != CR_OK) { + cr_utils_trace_info ("Couldn't get parsing context. " + "This may lead to some memory leaks."); + return; + } + if (stmt) { + cr_statement_destroy (stmt); + stmt = NULL; + cr_doc_handler_set_ctxt (a_this, NULL); + cr_doc_handler_set_result (a_this, NULL); + } +} + +static void +parse_at_media_start_selector_cb (CRDocHandler * a_this, + CRSelector * a_sellist) +{ + enum CRStatus status = CR_OK; + CRStatement *at_media = NULL; + CRStatement **at_media_ptr = NULL; + CRStatement *ruleset = NULL; + + g_return_if_fail (a_this && a_this->priv && a_sellist); + + at_media_ptr = &at_media; + status = cr_doc_handler_get_ctxt (a_this, (gpointer *) at_media_ptr); + g_return_if_fail (status == CR_OK && at_media); + g_return_if_fail (at_media->type == AT_MEDIA_RULE_STMT); + ruleset = cr_statement_new_ruleset (NULL, a_sellist, NULL, at_media); + g_return_if_fail (ruleset); + status = cr_doc_handler_set_ctxt (a_this, ruleset); + g_return_if_fail (status == CR_OK); +} + +static void +parse_at_media_property_cb (CRDocHandler * a_this, + CRString * a_name, CRTerm * a_value, + gboolean a_important) +{ + enum CRStatus status = CR_OK; + + /* + *the current ruleset stmt, child of the + *current at-media being parsed. + */ + CRStatement *stmt = NULL; + CRStatement **stmtptr = NULL; + CRDeclaration *decl = NULL; + CRString *name = NULL; + + g_return_if_fail (a_this && a_name); + + name = cr_string_dup (a_name) ; + g_return_if_fail (name); + + stmtptr = &stmt; + status = cr_doc_handler_get_ctxt (a_this, + (gpointer *) stmtptr); + g_return_if_fail (status == CR_OK && stmt); + g_return_if_fail (stmt->type == RULESET_STMT); + + decl = cr_declaration_new (stmt, name, a_value); + g_return_if_fail (decl); + decl->important = a_important; + status = cr_statement_ruleset_append_decl (stmt, decl); + g_return_if_fail (status == CR_OK); +} + +static void +parse_at_media_end_selector_cb (CRDocHandler * a_this, + CRSelector * a_sellist) +{ + enum CRStatus status = CR_OK; + + /* + *the current ruleset stmt, child of the + *current at-media being parsed. + */ + CRStatement *stmt = NULL; + CRStatement **stmtptr = NULL; + + g_return_if_fail (a_this && a_sellist); + + stmtptr = &stmt; + status = cr_doc_handler_get_ctxt (a_this, (gpointer *) stmtptr); + g_return_if_fail (status == CR_OK && stmt + && stmt->type == RULESET_STMT); + g_return_if_fail (stmt->kind.ruleset->parent_media_rule); + + status = cr_doc_handler_set_ctxt + (a_this, stmt->kind.ruleset->parent_media_rule); + g_return_if_fail (status == CR_OK); +} + +static void +parse_at_media_end_media_cb (CRDocHandler * a_this, + GList * a_media_list) +{ + enum CRStatus status = CR_OK; + CRStatement *at_media = NULL; + CRStatement **at_media_ptr = NULL; + + g_return_if_fail (a_this && a_this->priv); + + at_media_ptr = &at_media; + status = cr_doc_handler_get_ctxt (a_this, + (gpointer *) at_media_ptr); + g_return_if_fail (status == CR_OK && at_media); + status = cr_doc_handler_set_result (a_this, at_media); +} + +static void +parse_ruleset_start_selector_cb (CRDocHandler * a_this, + CRSelector * a_sellist) +{ + CRStatement *ruleset = NULL; + + g_return_if_fail (a_this && a_this->priv && a_sellist); + + ruleset = cr_statement_new_ruleset (NULL, a_sellist, NULL, NULL); + g_return_if_fail (ruleset); + + cr_doc_handler_set_result (a_this, ruleset); +} + +static void +parse_ruleset_unrecoverable_error_cb (CRDocHandler * a_this) +{ + CRStatement *stmt = NULL; + CRStatement **stmtptr = NULL; + enum CRStatus status = CR_OK; + + stmtptr = &stmt; + status = cr_doc_handler_get_result (a_this, (gpointer *) stmtptr); + if (status != CR_OK) { + cr_utils_trace_info ("Couldn't get parsing context. " + "This may lead to some memory leaks."); + return; + } + if (stmt) { + cr_statement_destroy (stmt); + stmt = NULL; + cr_doc_handler_set_result (a_this, NULL); + } +} + +static void +parse_ruleset_property_cb (CRDocHandler * a_this, + CRString * a_name, + CRTerm * a_value, gboolean a_important) +{ + enum CRStatus status = CR_OK; + CRStatement *ruleset = NULL; + CRStatement **rulesetptr = NULL; + CRDeclaration *decl = NULL; + CRString *stringue = NULL; + + g_return_if_fail (a_this && a_this->priv && a_name); + + stringue = cr_string_dup (a_name); + g_return_if_fail (stringue); + + rulesetptr = &ruleset; + status = cr_doc_handler_get_result (a_this, (gpointer *) rulesetptr); + g_return_if_fail (status == CR_OK + && ruleset + && ruleset->type == RULESET_STMT); + + decl = cr_declaration_new (ruleset, stringue, a_value); + g_return_if_fail (decl); + decl->important = a_important; + status = cr_statement_ruleset_append_decl (ruleset, decl); + g_return_if_fail (status == CR_OK); +} + +static void +parse_ruleset_end_selector_cb (CRDocHandler * a_this, + CRSelector * a_sellist) +{ + CRStatement *result = NULL; + CRStatement **resultptr = NULL; + enum CRStatus status = CR_OK; + + g_return_if_fail (a_this && a_sellist); + + resultptr = &result; + status = cr_doc_handler_get_result (a_this, (gpointer *) resultptr); + + g_return_if_fail (status == CR_OK + && result + && result->type == RULESET_STMT); +} + +static void +cr_statement_clear (CRStatement * a_this) +{ + g_return_if_fail (a_this); + + switch (a_this->type) { + case AT_RULE_STMT: + break; + case RULESET_STMT: + if (!a_this->kind.ruleset) + return; + if (a_this->kind.ruleset->sel_list) { + cr_selector_unref (a_this->kind.ruleset->sel_list); + a_this->kind.ruleset->sel_list = NULL; + } + if (a_this->kind.ruleset->decl_list) { + cr_declaration_destroy + (a_this->kind.ruleset->decl_list); + a_this->kind.ruleset->decl_list = NULL; + } + g_free (a_this->kind.ruleset); + a_this->kind.ruleset = NULL; + break; + + case AT_IMPORT_RULE_STMT: + if (!a_this->kind.import_rule) + return; + if (a_this->kind.import_rule->url) { + cr_string_destroy + (a_this->kind.import_rule->url) ; + a_this->kind.import_rule->url = NULL; + } + g_free (a_this->kind.import_rule); + a_this->kind.import_rule = NULL; + break; + + case AT_MEDIA_RULE_STMT: + if (!a_this->kind.media_rule) + return; + if (a_this->kind.media_rule->rulesets) { + cr_statement_destroy + (a_this->kind.media_rule->rulesets); + a_this->kind.media_rule->rulesets = NULL; + } + if (a_this->kind.media_rule->media_list) { + GList *cur = NULL; + + for (cur = a_this->kind.media_rule->media_list; + cur; cur = cur->next) { + if (cur->data) { + cr_string_destroy ((CRString *) cur->data); + cur->data = NULL; + } + + } + g_list_free (a_this->kind.media_rule->media_list); + a_this->kind.media_rule->media_list = NULL; + } + g_free (a_this->kind.media_rule); + a_this->kind.media_rule = NULL; + break; + + case AT_PAGE_RULE_STMT: + if (!a_this->kind.page_rule) + return; + + if (a_this->kind.page_rule->decl_list) { + cr_declaration_destroy + (a_this->kind.page_rule->decl_list); + a_this->kind.page_rule->decl_list = NULL; + } + if (a_this->kind.page_rule->name) { + cr_string_destroy + (a_this->kind.page_rule->name); + a_this->kind.page_rule->name = NULL; + } + if (a_this->kind.page_rule->pseudo) { + cr_string_destroy + (a_this->kind.page_rule->pseudo); + a_this->kind.page_rule->pseudo = NULL; + } + g_free (a_this->kind.page_rule); + a_this->kind.page_rule = NULL; + break; + + case AT_CHARSET_RULE_STMT: + if (!a_this->kind.charset_rule) + return; + + if (a_this->kind.charset_rule->charset) { + cr_string_destroy + (a_this->kind.charset_rule->charset); + a_this->kind.charset_rule->charset = NULL; + } + g_free (a_this->kind.charset_rule); + a_this->kind.charset_rule = NULL; + break; + + case AT_FONT_FACE_RULE_STMT: + if (!a_this->kind.font_face_rule) + return; + + if (a_this->kind.font_face_rule->decl_list) { + cr_declaration_unref + (a_this->kind.font_face_rule->decl_list); + a_this->kind.font_face_rule->decl_list = NULL; + } + g_free (a_this->kind.font_face_rule); + a_this->kind.font_face_rule = NULL; + break; + + default: + break; + } +} + +/** + * cr_statement_ruleset_to_string: + * + *@a_this: the current instance of #CRStatement + *@a_indent: the number of whitespace to use for indentation + * + *Serializes the ruleset statement into a string + * + *Returns the newly allocated serialised string. Must be freed + *by the caller, using g_free(). + */ +static gchar * +cr_statement_ruleset_to_string (CRStatement const * a_this, glong a_indent) +{ + GString *stringue = NULL; + gchar *tmp_str = NULL, + *result = NULL; + + g_return_val_if_fail (a_this && a_this->type == RULESET_STMT, NULL); + + stringue = g_string_new (NULL); + + if (a_this->kind.ruleset->sel_list) { + if (a_indent) + cr_utils_dump_n_chars2 (' ', stringue, a_indent); + + tmp_str = + (gchar *) cr_selector_to_string (a_this->kind.ruleset-> + sel_list); + if (tmp_str) { + g_string_append (stringue, tmp_str); + g_free (tmp_str); + tmp_str = NULL; + } + } + g_string_append (stringue, " {\n"); + if (a_this->kind.ruleset->decl_list) { + tmp_str = (gchar *) cr_declaration_list_to_string2 + (a_this->kind.ruleset->decl_list, + a_indent + DECLARATION_INDENT_NB, TRUE); + if (tmp_str) { + g_string_append (stringue, tmp_str); + g_free (tmp_str); + tmp_str = NULL; + } + g_string_append (stringue, "\n"); + cr_utils_dump_n_chars2 (' ', stringue, a_indent); + } + g_string_append (stringue, "}"); + result = g_string_free (stringue, FALSE); + + if (tmp_str) { + g_free (tmp_str); + tmp_str = NULL; + } + return result; +} + + +/** + * cr_statement_font_face_rule_to_string: + * + *@a_this: the current instance of #CRStatement to consider + *It must be a font face rule statement. + *@a_indent: the number of white spaces of indentation. + * + *Serializes a font face rule statement into a string. + * + *Returns the serialized string. Must be deallocated by the caller + *using g_free(). + */ +static gchar * +cr_statement_font_face_rule_to_string (CRStatement const * a_this, + glong a_indent) +{ + gchar *result = NULL, *tmp_str = NULL ; + GString *stringue = NULL ; + + g_return_val_if_fail (a_this + && a_this->type == AT_FONT_FACE_RULE_STMT, + NULL); + + if (a_this->kind.font_face_rule->decl_list) { + stringue = g_string_new (NULL) ; + g_return_val_if_fail (stringue, NULL) ; + if (a_indent) + cr_utils_dump_n_chars2 (' ', stringue, + a_indent); + g_string_append (stringue, "@font-face {\n"); + tmp_str = (gchar *) cr_declaration_list_to_string2 + (a_this->kind.font_face_rule->decl_list, + a_indent + DECLARATION_INDENT_NB, TRUE) ; + if (tmp_str) { + g_string_append (stringue, + tmp_str) ; + g_free (tmp_str) ; + tmp_str = NULL ; + } + g_string_append (stringue, "\n}"); + } + if (stringue) { + result = g_string_free (stringue, FALSE); + stringue = NULL ; + } + return result ; +} + + +/** + * cr_statement_charset_to_string: + * + *Serialises an \@charset statement into a string. + *@a_this: the statement to serialize. + *@a_indent: the number of indentation spaces + * + *Returns the serialized charset statement. Must be + *freed by the caller using g_free(). + */ +static gchar * +cr_statement_charset_to_string (CRStatement const *a_this, + gulong a_indent) +{ + gchar *str = NULL ; + GString *stringue = NULL ; + + g_return_val_if_fail (a_this + && a_this->type == AT_CHARSET_RULE_STMT, + NULL) ; + + if (a_this->kind.charset_rule + && a_this->kind.charset_rule->charset + && a_this->kind.charset_rule->charset->stryng + && a_this->kind.charset_rule->charset->stryng->str) { + str = g_strndup (a_this->kind.charset_rule->charset->stryng->str, + a_this->kind.charset_rule->charset->stryng->len); + g_return_val_if_fail (str, NULL); + stringue = g_string_new (NULL) ; + g_return_val_if_fail (stringue, NULL) ; + cr_utils_dump_n_chars2 (' ', stringue, a_indent); + g_string_append_printf (stringue, + "@charset \"%s\" ;", str); + if (str) { + g_free (str); + str = NULL; + } + } + if (stringue) { + str = g_string_free (stringue, FALSE); + } + return str ; +} + + +/** + * cr_statement_at_page_rule_to_string: + * + *Serialises the at page rule statement into a string + *@a_this: the current instance of #CRStatement. Must + *be an "\@page" rule statement. + * + *Returns the serialized string. Must be freed by the caller + */ +static gchar * +cr_statement_at_page_rule_to_string (CRStatement const *a_this, + gulong a_indent) +{ + GString *stringue = NULL; + gchar *result = NULL ; + + stringue = g_string_new (NULL) ; + + cr_utils_dump_n_chars2 (' ', stringue, a_indent) ; + g_string_append (stringue, "@page"); + if (a_this->kind.page_rule->name + && a_this->kind.page_rule->name->stryng) { + g_string_append_printf + (stringue, " %s", + a_this->kind.page_rule->name->stryng->str) ; + } else { + g_string_append (stringue, " "); + } + if (a_this->kind.page_rule->pseudo + && a_this->kind.page_rule->pseudo->stryng) { + g_string_append_printf + (stringue, " :%s", + a_this->kind.page_rule->pseudo->stryng->str) ; + } + if (a_this->kind.page_rule->decl_list) { + gchar *str = NULL ; + g_string_append (stringue, " {\n"); + str = (gchar *) cr_declaration_list_to_string2 + (a_this->kind.page_rule->decl_list, + a_indent + DECLARATION_INDENT_NB, TRUE) ; + if (str) { + g_string_append (stringue, str) ; + g_free (str) ; + str = NULL ; + } + g_string_append (stringue, "\n}\n"); + } + result = g_string_free (stringue, FALSE) ; + stringue = NULL ; + return result ; +} + + +/** + *Serializes an \@media statement. + *@param a_this the current instance of #CRStatement + *@param a_indent the number of spaces of indentation. + *@return the serialized \@media statement. Must be freed + *by the caller using g_free(). + */ +static gchar * +cr_statement_media_rule_to_string (CRStatement const *a_this, + gulong a_indent) +{ + gchar *str = NULL ; + GString *stringue = NULL ; + GList const *cur = NULL; + + g_return_val_if_fail (a_this->type == AT_MEDIA_RULE_STMT, + NULL); + + if (a_this->kind.media_rule) { + stringue = g_string_new (NULL) ; + cr_utils_dump_n_chars2 (' ', stringue, a_indent); + g_string_append (stringue, "@media"); + + for (cur = a_this->kind.media_rule->media_list; cur; + cur = cur->next) { + if (cur->data) { + gchar *str2 = cr_string_dup2 + ((CRString const *) cur->data); + + if (str2) { + if (cur->prev) { + g_string_append + (stringue, + ","); + } + g_string_append_printf + (stringue, + " %s", str2); + g_free (str2); + str2 = NULL; + } + } + } + g_string_append (stringue, " {\n"); + str = cr_statement_list_to_string + (a_this->kind.media_rule->rulesets, + a_indent + DECLARATION_INDENT_NB) ; + if (str) { + g_string_append (stringue, str) ; + g_free (str) ; + str = NULL ; + } + g_string_append (stringue, "\n}"); + } + if (stringue) { + str = g_string_free (stringue, FALSE) ; + } + return str ; +} + + +static gchar * +cr_statement_import_rule_to_string (CRStatement const *a_this, + gulong a_indent) +{ + GString *stringue = NULL ; + gchar *str = NULL; + + g_return_val_if_fail (a_this + && a_this->type == AT_IMPORT_RULE_STMT + && a_this->kind.import_rule, + NULL) ; + + if (a_this->kind.import_rule->url + && a_this->kind.import_rule->url->stryng) { + stringue = g_string_new (NULL) ; + g_return_val_if_fail (stringue, NULL) ; + str = g_strndup (a_this->kind.import_rule->url->stryng->str, + a_this->kind.import_rule->url->stryng->len); + cr_utils_dump_n_chars2 (' ', stringue, a_indent); + if (str) { + g_string_append_printf (stringue, + "@import url(\"%s\")", + str); + g_free (str); + str = NULL ; + } else /*there is no url, so no import rule, get out! */ + return NULL; + + if (a_this->kind.import_rule->media_list) { + GList const *cur = NULL; + + for (cur = a_this->kind.import_rule->media_list; + cur; cur = cur->next) { + if (cur->data) { + CRString const *crstr = cur->data; + + if (cur->prev) { + g_string_append + (stringue, ", "); + } + if (crstr + && crstr->stryng + && crstr->stryng->str) { + g_string_append_len + (stringue, + crstr->stryng->str, + crstr->stryng->len) ; + } + } + } + } + g_string_append (stringue, " ;"); + } + if (stringue) { + str = g_string_free (stringue, FALSE) ; + stringue = NULL ; + } + return str ; +} + + +/******************* + *public functions + ******************/ + +/** + * cr_statement_does_buf_parses_against_core: + * + *@a_buf: the buffer to parse. + *@a_encoding: the character encoding of a_buf. + * + *Tries to parse a buffer and says whether if the content of the buffer + *is a css statement as defined by the "Core CSS Grammar" (chapter 4 of the + *css spec) or not. + * + *Returns TRUE if the buffer parses against the core grammar, false otherwise. + */ +gboolean +cr_statement_does_buf_parses_against_core (const guchar * a_buf, + enum CREncoding a_encoding) +{ + CRParser *parser = NULL; + enum CRStatus status = CR_OK; + gboolean result = FALSE; + + parser = cr_parser_new_from_buf ((guchar*)a_buf, strlen ((const char *) a_buf), + a_encoding, FALSE); + g_return_val_if_fail (parser, FALSE); + + status = cr_parser_set_use_core_grammar (parser, TRUE); + if (status != CR_OK) { + goto cleanup; + } + + status = cr_parser_parse_statement_core (parser); + if (status == CR_OK) { + result = TRUE; + } + + cleanup: + if (parser) { + cr_parser_destroy (parser); + } + + return result; +} + +/** + * cr_statement_parse_from_buf: + * + *@a_buf: the buffer to parse. + *@a_encoding: the character encoding of a_buf. + * + *Parses a buffer that contains a css statement and returns + *an instance of #CRStatement in case of successful parsing. + *TODO: at support of "\@import" rules. + * + *Returns the newly built instance of #CRStatement in case + *of successful parsing, NULL otherwise. + */ +CRStatement * +cr_statement_parse_from_buf (const guchar * a_buf, enum CREncoding a_encoding) +{ + CRStatement *result = NULL; + + /* + *The strategy of this function is "brute force". + *It tries to parse all the types of CRStatement it knows about. + *I could do this a smarter way but I don't have the time now. + *I think I will revisit this when time of performances and + *pull based incremental parsing comes. + */ + + result = cr_statement_ruleset_parse_from_buf (a_buf, a_encoding); + if (!result) { + result = cr_statement_at_charset_rule_parse_from_buf + (a_buf, a_encoding); + } else { + goto out; + } + + if (!result) { + result = cr_statement_at_media_rule_parse_from_buf + (a_buf, a_encoding); + } else { + goto out; + } + + if (!result) { + result = cr_statement_at_charset_rule_parse_from_buf + (a_buf, a_encoding); + } else { + goto out; + } + + if (!result) { + result = cr_statement_font_face_rule_parse_from_buf + (a_buf, a_encoding); + + } else { + goto out; + } + + if (!result) { + result = cr_statement_at_page_rule_parse_from_buf + (a_buf, a_encoding); + } else { + goto out; + } + + if (!result) { + result = cr_statement_at_import_rule_parse_from_buf + (a_buf, a_encoding); + } else { + goto out; + } + + out: + return result; +} + +/** + * cr_statement_ruleset_parse_from_buf: + * + *@a_buf: the buffer to parse. + *@a_enc: the character encoding of a_buf. + * + *Parses a buffer that contains a ruleset statement an instantiates + *a #CRStatement of type RULESET_STMT. + * + *Returns the newly built instance of #CRStatement in case of successful parsing, + *NULL otherwise. + */ +CRStatement * +cr_statement_ruleset_parse_from_buf (const guchar * a_buf, + enum CREncoding a_enc) +{ + enum CRStatus status = CR_OK; + CRStatement *result = NULL; + CRStatement **resultptr = NULL; + CRParser *parser = NULL; + CRDocHandler *sac_handler = NULL; + + g_return_val_if_fail (a_buf, NULL); + + parser = cr_parser_new_from_buf ((guchar*)a_buf, strlen ((const char *) a_buf), + a_enc, FALSE); + + g_return_val_if_fail (parser, NULL); + + sac_handler = cr_doc_handler_new (); + g_return_val_if_fail (parser, NULL); + + sac_handler->start_selector = parse_ruleset_start_selector_cb; + sac_handler->end_selector = parse_ruleset_end_selector_cb; + sac_handler->property = parse_ruleset_property_cb; + sac_handler->unrecoverable_error = + parse_ruleset_unrecoverable_error_cb; + + cr_parser_set_sac_handler (parser, sac_handler); + cr_parser_try_to_skip_spaces_and_comments (parser); + status = cr_parser_parse_ruleset (parser); + if (status != CR_OK) { + goto cleanup; + } + + resultptr = &result; + status = cr_doc_handler_get_result (sac_handler, + (gpointer *) resultptr); + if (!((status == CR_OK) && result)) { + if (result) { + cr_statement_destroy (result); + result = NULL; + } + } + + cleanup: + if (parser) { + cr_parser_destroy (parser); + parser = NULL; + sac_handler = NULL ; + } + if (sac_handler) { + cr_doc_handler_unref (sac_handler); + sac_handler = NULL; + } + return result; +} + +/** + * cr_statement_new_ruleset: + * + *@a_sel_list: the list of #CRSimpleSel (selectors) + *the rule applies to. + *@a_decl_list: the list of instances of #CRDeclaration + *that composes the ruleset. + *@a_media_types: a list of instances of GString that + *describe the media list this ruleset applies to. + * + *Creates a new instance of #CRStatement of type + *#CRRulSet. + * + *Returns the new instance of #CRStatement or NULL if something + *went wrong. + */ +CRStatement * +cr_statement_new_ruleset (CRStyleSheet * a_sheet, + CRSelector * a_sel_list, + CRDeclaration * a_decl_list, + CRStatement * a_parent_media_rule) +{ + CRStatement *result = NULL; + + g_return_val_if_fail (a_sel_list, NULL); + + if (a_parent_media_rule) { + g_return_val_if_fail + (a_parent_media_rule->type == AT_MEDIA_RULE_STMT, + NULL); + g_return_val_if_fail (a_parent_media_rule->kind.media_rule, + NULL); + } + + result = g_try_malloc (sizeof (CRStatement)); + + if (!result) { + cr_utils_trace_info ("Out of memory"); + return NULL; + } + + memset (result, 0, sizeof (CRStatement)); + result->type = RULESET_STMT; + result->kind.ruleset = g_try_malloc (sizeof (CRRuleSet)); + + if (!result->kind.ruleset) { + cr_utils_trace_info ("Out of memory"); + if (result) + g_free (result); + return NULL; + } + + memset (result->kind.ruleset, 0, sizeof (CRRuleSet)); + result->kind.ruleset->sel_list = a_sel_list; + if (a_sel_list) + cr_selector_ref (a_sel_list); + result->kind.ruleset->decl_list = a_decl_list; + + if (a_parent_media_rule) { + result->kind.ruleset->parent_media_rule = a_parent_media_rule; + a_parent_media_rule->kind.media_rule->rulesets = + cr_statement_append + (a_parent_media_rule->kind.media_rule->rulesets, + result); + } + + cr_statement_set_parent_sheet (result, a_sheet); + + return result; +} + +/** + * cr_statement_at_media_rule_parse_from_buf: + * + *@a_buf: the input to parse. + *@a_enc: the encoding of the buffer. + * + *Parses a buffer that contains an "\@media" declaration + *and builds an \@media css statement. + * + *Returns the \@media statement, or NULL if the buffer could not + *be successfully parsed. + */ +CRStatement * +cr_statement_at_media_rule_parse_from_buf (const guchar * a_buf, + enum CREncoding a_enc) +{ + CRParser *parser = NULL; + CRStatement *result = NULL; + CRStatement **resultptr = NULL; + CRDocHandler *sac_handler = NULL; + enum CRStatus status = CR_OK; + + parser = cr_parser_new_from_buf ((guchar*)a_buf, strlen ((const char *) a_buf), + a_enc, FALSE); + if (!parser) { + cr_utils_trace_info ("Instantiation of the parser failed"); + goto cleanup; + } + + sac_handler = cr_doc_handler_new (); + if (!sac_handler) { + cr_utils_trace_info + ("Instantiation of the sac handler failed"); + goto cleanup; + } + + sac_handler->start_media = parse_at_media_start_media_cb; + sac_handler->start_selector = parse_at_media_start_selector_cb; + sac_handler->property = parse_at_media_property_cb; + sac_handler->end_selector = parse_at_media_end_selector_cb; + sac_handler->end_media = parse_at_media_end_media_cb; + sac_handler->unrecoverable_error = + parse_at_media_unrecoverable_error_cb; + + status = cr_parser_set_sac_handler (parser, sac_handler); + if (status != CR_OK) + goto cleanup; + + status = cr_parser_try_to_skip_spaces_and_comments (parser); + if (status != CR_OK) + goto cleanup; + + status = cr_parser_parse_media (parser); + if (status != CR_OK) + goto cleanup; + + resultptr = &result; + status = cr_doc_handler_get_result (sac_handler, + (gpointer *) resultptr); + if (status != CR_OK) + goto cleanup; + + cleanup: + + if (parser) { + cr_parser_destroy (parser); + parser = NULL; + sac_handler = NULL ; + } + if (sac_handler) { + cr_doc_handler_unref (sac_handler); + sac_handler = NULL; + } + + return result; +} + +/** + * cr_statement_new_at_media_rule: + * + *@a_ruleset: the ruleset statements contained + *in the \@media rule. + *@a_media: the media string list. A list of GString pointers. + * + *Instantiates an instance of #CRStatement of type + *AT_MEDIA_RULE_STMT (\@media ruleset). + * + */ +CRStatement * +cr_statement_new_at_media_rule (CRStyleSheet * a_sheet, + CRStatement * a_rulesets, GList * a_media) +{ + CRStatement *result = NULL, + *cur = NULL; + + if (a_rulesets) + g_return_val_if_fail (a_rulesets->type == RULESET_STMT, NULL); + + result = g_try_malloc (sizeof (CRStatement)); + + if (!result) { + cr_utils_trace_info ("Out of memory"); + return NULL; + } + + memset (result, 0, sizeof (CRStatement)); + result->type = AT_MEDIA_RULE_STMT; + + result->kind.media_rule = g_try_malloc (sizeof (CRAtMediaRule)); + if (!result->kind.media_rule) { + cr_utils_trace_info ("Out of memory"); + g_free (result); + return NULL; + } + memset (result->kind.media_rule, 0, sizeof (CRAtMediaRule)); + result->kind.media_rule->rulesets = a_rulesets; + for (cur = a_rulesets; cur; cur = cur->next) { + if (cur->type != RULESET_STMT || !cur->kind.ruleset) { + cr_utils_trace_info ("Bad parameter a_rulesets. " + "It should be a list of " + "correct ruleset statement only !"); + goto error; + } + cur->kind.ruleset->parent_media_rule = result; + } + + result->kind.media_rule->media_list = a_media; + if (a_sheet) { + cr_statement_set_parent_sheet (result, a_sheet); + } + + return result; + + error: + return NULL; +} + +/** + * cr_statement_new_at_import_rule: + * + *@a_url: the url to connect to the get the file + *to be imported. + *@a_sheet: the imported parsed stylesheet. + * + *Creates a new instance of #CRStatment of type + *#CRAtImportRule. + * + *Returns the newly built instance of #CRStatement. + */ +CRStatement * +cr_statement_new_at_import_rule (CRStyleSheet * a_container_sheet, + CRString * a_url, + GList * a_media_list, + CRStyleSheet * a_imported_sheet) +{ + CRStatement *result = NULL; + + result = g_try_malloc (sizeof (CRStatement)); + + if (!result) { + cr_utils_trace_info ("Out of memory"); + return NULL; + } + + memset (result, 0, sizeof (CRStatement)); + result->type = AT_IMPORT_RULE_STMT; + + result->kind.import_rule = g_try_malloc (sizeof (CRAtImportRule)); + + if (!result->kind.import_rule) { + cr_utils_trace_info ("Out of memory"); + g_free (result); + return NULL; + } + + memset (result->kind.import_rule, 0, sizeof (CRAtImportRule)); + result->kind.import_rule->url = a_url; + result->kind.import_rule->media_list = a_media_list; + result->kind.import_rule->sheet = a_imported_sheet; + if (a_container_sheet) + cr_statement_set_parent_sheet (result, a_container_sheet); + + return result; +} + +/** + * cr_statement_at_import_rule_parse_from_buf: + * + *@a_buf: the buffer to parse. + *@a_encoding: the encoding of a_buf. + * + *Parses a buffer that contains an "\@import" rule and + *instantiate a #CRStatement of type AT_IMPORT_RULE_STMT + * + *Returns the newly built instance of #CRStatement in case of + *a successful parsing, NULL otherwise. + */ +CRStatement * +cr_statement_at_import_rule_parse_from_buf (const guchar * a_buf, + enum CREncoding a_encoding) +{ + enum CRStatus status = CR_OK; + CRParser *parser = NULL; + CRStatement *result = NULL; + GList *media_list = NULL; + CRString *import_string = NULL; + CRParsingLocation location = {0} ; + + parser = cr_parser_new_from_buf ((guchar*)a_buf, strlen ((const char *) a_buf), + a_encoding, FALSE); + if (!parser) { + cr_utils_trace_info ("Instantiation of parser failed."); + goto cleanup; + } + + status = cr_parser_try_to_skip_spaces_and_comments (parser); + if (status != CR_OK) + goto cleanup; + + status = cr_parser_parse_import (parser, + &media_list, + &import_string, + &location); + if (status != CR_OK || !import_string) + goto cleanup; + + result = cr_statement_new_at_import_rule (NULL, import_string, + media_list, NULL); + if (result) { + cr_parsing_location_copy (&result->location, + &location) ; + import_string = NULL; + media_list = NULL; + } + + cleanup: + if (parser) { + cr_parser_destroy (parser); + parser = NULL; + } + if (media_list) { + for (; media_list; + media_list = g_list_next (media_list)) { + if (media_list->data) { + cr_string_destroy ((CRString*)media_list->data); + media_list->data = NULL; + } + } + g_list_free (media_list); + media_list = NULL; + } + if (import_string) { + cr_string_destroy (import_string); + import_string = NULL; + } + + return result; +} + +/** + * cr_statement_new_at_page_rule: + * + *@a_decl_list: a list of instances of #CRDeclarations + *which is actually the list of declarations that applies to + *this page rule. + *@a_selector: the page rule selector. + * + *Creates a new instance of #CRStatement of type + *#CRAtPageRule. + * + *Returns the newly built instance of #CRStatement or NULL + *in case of error. + */ +CRStatement * +cr_statement_new_at_page_rule (CRStyleSheet * a_sheet, + CRDeclaration * a_decl_list, + CRString * a_name, CRString * a_pseudo) +{ + CRStatement *result = NULL; + + result = g_try_malloc (sizeof (CRStatement)); + + if (!result) { + cr_utils_trace_info ("Out of memory"); + return NULL; + } + + memset (result, 0, sizeof (CRStatement)); + result->type = AT_PAGE_RULE_STMT; + + result->kind.page_rule = g_try_malloc (sizeof (CRAtPageRule)); + + if (!result->kind.page_rule) { + cr_utils_trace_info ("Out of memory"); + g_free (result); + return NULL; + } + + memset (result->kind.page_rule, 0, sizeof (CRAtPageRule)); + if (a_decl_list) { + result->kind.page_rule->decl_list = a_decl_list; + cr_declaration_ref (a_decl_list); + } + result->kind.page_rule->name = a_name; + result->kind.page_rule->pseudo = a_pseudo; + if (a_sheet) + cr_statement_set_parent_sheet (result, a_sheet); + + return result; +} + +/** + * cr_statement_at_page_rule_parse_from_buf: + * + *@a_buf: the character buffer to parse. + *@a_encoding: the character encoding of a_buf. + * + *Parses a buffer that contains an "\@page" production and, + *if the parsing succeeds, builds the page statement. + * + *Returns the newly built at page statement in case of successful parsing, + *NULL otherwise. + */ +CRStatement * +cr_statement_at_page_rule_parse_from_buf (const guchar * a_buf, + enum CREncoding a_encoding) +{ + enum CRStatus status = CR_OK; + CRParser *parser = NULL; + CRDocHandler *sac_handler = NULL; + CRStatement *result = NULL; + CRStatement **resultptr = NULL; + + g_return_val_if_fail (a_buf, NULL); + + parser = cr_parser_new_from_buf ((guchar*)a_buf, strlen ((const char *) a_buf), + a_encoding, FALSE); + if (!parser) { + cr_utils_trace_info ("Instantiation of the parser failed."); + goto cleanup; + } + + sac_handler = cr_doc_handler_new (); + if (!sac_handler) { + cr_utils_trace_info + ("Instantiation of the sac handler failed."); + goto cleanup; + } + + sac_handler->start_page = parse_page_start_page_cb; + sac_handler->property = parse_page_property_cb; + sac_handler->end_page = parse_page_end_page_cb; + sac_handler->unrecoverable_error = parse_page_unrecoverable_error_cb; + + status = cr_parser_set_sac_handler (parser, sac_handler); + if (status != CR_OK) + goto cleanup; + + /*Now, invoke the parser to parse the "@page production" */ + cr_parser_try_to_skip_spaces_and_comments (parser); + if (status != CR_OK) + goto cleanup; + status = cr_parser_parse_page (parser); + if (status != CR_OK) + goto cleanup; + + resultptr = &result; + status = cr_doc_handler_get_result (sac_handler, + (gpointer *) resultptr); + + cleanup: + + if (parser) { + cr_parser_destroy (parser); + parser = NULL; + sac_handler = NULL ; + } + if (sac_handler) { + cr_doc_handler_unref (sac_handler); + sac_handler = NULL; + } + return result; +} + +/** + * cr_statement_new_at_charset_rule: + * + *@a_charset: the string representing the charset. + *Note that the newly built instance of #CRStatement becomes + *the owner of a_charset. The caller must not free a_charset !!!. + * + *Creates a new instance of #CRStatement of type + *#CRAtCharsetRule. + * + *Returns the newly built instance of #CRStatement or NULL + *if an error arises. + */ +CRStatement * +cr_statement_new_at_charset_rule (CRStyleSheet * a_sheet, + CRString * a_charset) +{ + CRStatement *result = NULL; + + g_return_val_if_fail (a_charset, NULL); + + result = g_try_malloc (sizeof (CRStatement)); + + if (!result) { + cr_utils_trace_info ("Out of memory"); + return NULL; + } + + memset (result, 0, sizeof (CRStatement)); + result->type = AT_CHARSET_RULE_STMT; + + result->kind.charset_rule = g_try_malloc (sizeof (CRAtCharsetRule)); + + if (!result->kind.charset_rule) { + cr_utils_trace_info ("Out of memory"); + g_free (result); + return NULL; + } + memset (result->kind.charset_rule, 0, sizeof (CRAtCharsetRule)); + result->kind.charset_rule->charset = a_charset; + cr_statement_set_parent_sheet (result, a_sheet); + + return result; +} + +/** + * cr_statement_at_charset_rule_parse_from_buf: + * + *@a_buf: the buffer to parse. + *@a_encoding: the character encoding of the buffer. + * + *Parses a buffer that contains an '\@charset' rule and + *creates an instance of #CRStatement of type AT_CHARSET_RULE_STMT. + * + *Returns the newly built instance of #CRStatement. + */ +CRStatement * +cr_statement_at_charset_rule_parse_from_buf (const guchar * a_buf, + enum CREncoding a_encoding) +{ + enum CRStatus status = CR_OK; + CRParser *parser = NULL; + CRStatement *result = NULL; + CRString *charset = NULL; + + g_return_val_if_fail (a_buf, NULL); + + parser = cr_parser_new_from_buf ((guchar*)a_buf, strlen ((const char *) a_buf), + a_encoding, FALSE); + if (!parser) { + cr_utils_trace_info ("Instantiation of the parser failed."); + goto cleanup; + } + + /*Now, invoke the parser to parse the "@charset production" */ + cr_parser_try_to_skip_spaces_and_comments (parser); + if (status != CR_OK) + goto cleanup; + status = cr_parser_parse_charset (parser, &charset, NULL); + if (status != CR_OK || !charset) + goto cleanup; + + result = cr_statement_new_at_charset_rule (NULL, charset); + if (result) + charset = NULL; + + cleanup: + + if (parser) { + cr_parser_destroy (parser); + parser = NULL; + } + if (charset) { + cr_string_destroy (charset); + } + + return result; +} + +/** + * cr_statement_new_at_font_face_rule: + * + *@a_font_decls: a list of instances of #CRDeclaration. Each declaration + *is actually a font declaration. + * + *Creates an instance of #CRStatement of type #CRAtFontFaceRule. + * + *Returns the newly built instance of #CRStatement. + */ +CRStatement * +cr_statement_new_at_font_face_rule (CRStyleSheet * a_sheet, + CRDeclaration * a_font_decls) +{ + CRStatement *result = NULL; + + result = g_try_malloc (sizeof (CRStatement)); + + if (!result) { + cr_utils_trace_info ("Out of memory"); + return NULL; + } + memset (result, 0, sizeof (CRStatement)); + result->type = AT_FONT_FACE_RULE_STMT; + + result->kind.font_face_rule = g_try_malloc + (sizeof (CRAtFontFaceRule)); + + if (!result->kind.font_face_rule) { + cr_utils_trace_info ("Out of memory"); + g_free (result); + return NULL; + } + memset (result->kind.font_face_rule, 0, sizeof (CRAtFontFaceRule)); + + result->kind.font_face_rule->decl_list = a_font_decls; + if (a_sheet) + cr_statement_set_parent_sheet (result, a_sheet); + + return result; +} + +/** + * cr_statement_font_face_rule_parse_from_buf: + * + * + *@a_buf: the buffer to parse. + *@a_encoding: the character encoding of a_buf. + * + *Parses a buffer that contains an "\@font-face" rule and builds + *an instance of #CRStatement of type AT_FONT_FACE_RULE_STMT out of it. + * + *Returns the newly built instance of #CRStatement in case of successufull + *parsing, NULL otherwise. + */ +CRStatement * +cr_statement_font_face_rule_parse_from_buf (const guchar * a_buf, + enum CREncoding a_encoding) +{ + CRStatement *result = NULL; + CRStatement **resultptr = NULL; + CRParser *parser = NULL; + CRDocHandler *sac_handler = NULL; + enum CRStatus status = CR_OK; + + parser = cr_parser_new_from_buf ((guchar*)a_buf, strlen ((const char *) a_buf), + a_encoding, FALSE); + if (!parser) + goto cleanup; + + sac_handler = cr_doc_handler_new (); + if (!sac_handler) + goto cleanup; + + /* + *set sac callbacks here + */ + sac_handler->start_font_face = parse_font_face_start_font_face_cb; + sac_handler->property = parse_font_face_property_cb; + sac_handler->end_font_face = parse_font_face_end_font_face_cb; + sac_handler->unrecoverable_error = + parse_font_face_unrecoverable_error_cb; + + status = cr_parser_set_sac_handler (parser, sac_handler); + if (status != CR_OK) + goto cleanup; + + /* + *cleanup spaces of comment that may be there before the real + *"@font-face" thing. + */ + status = cr_parser_try_to_skip_spaces_and_comments (parser); + if (status != CR_OK) + goto cleanup; + + status = cr_parser_parse_font_face (parser); + if (status != CR_OK) + goto cleanup; + + resultptr = &result; + status = cr_doc_handler_get_result (sac_handler, + (gpointer *) resultptr); + if (status != CR_OK || !result) + goto cleanup; + + cleanup: + if (parser) { + cr_parser_destroy (parser); + parser = NULL; + sac_handler = NULL ; + } + if (sac_handler) { + cr_doc_handler_unref (sac_handler); + sac_handler = NULL; + } + return result; +} + +/** + * cr_statement_set_parent_sheet: + * + *@a_this: the current instance of #CRStatement. + *@a_sheet: the sheet that contains the current statement. + * + *Sets the container stylesheet. + * + *Returns CR_OK upon successful completion, an error code otherwise. + */ +enum CRStatus +cr_statement_set_parent_sheet (CRStatement * a_this, CRStyleSheet * a_sheet) +{ + g_return_val_if_fail (a_this, CR_BAD_PARAM_ERROR); + a_this->parent_sheet = a_sheet; + return CR_OK; +} + +/** + * cr_statement_get_parent_sheet: + * + *@a_this: the current #CRStatement. + *@a_sheet: out parameter. A pointer to the sheets that + * + *Gets the sheets that contains the current statement. + * + *Returns CR_OK upon successful completion, an error code otherwise. + */ +enum CRStatus +cr_statement_get_parent_sheet (CRStatement * a_this, CRStyleSheet ** a_sheet) +{ + g_return_val_if_fail (a_this && a_sheet, CR_BAD_PARAM_ERROR); + *a_sheet = a_this->parent_sheet; + return CR_OK; +} + +/** + * cr_statement_append: + * + *@a_this: the current instance of the statement list. + *@a_new: a_new the new instance of #CRStatement to append. + * + *Appends a new statement to the statement list. + * + *Returns the new list statement list, or NULL in cas of failure. + */ +CRStatement * +cr_statement_append (CRStatement * a_this, CRStatement * a_new) +{ + CRStatement *cur = NULL; + + g_return_val_if_fail (a_new, NULL); + + if (!a_this) { + return a_new; + } + + /*walk forward in the current list to find the tail list element */ + for (cur = a_this; cur && cur->next; cur = cur->next) ; + + cur->next = a_new; + a_new->prev = cur; + + return a_this; +} + +/** + * cr_statement_prepend: + * + *@a_this: the current instance of #CRStatement. + *@a_new: the new statement to prepend. + * + *Prepends the an instance of #CRStatement to + *the current statement list. + * + *Returns the new list with the new statement prepended, + *or NULL in case of an error. + */ +CRStatement * +cr_statement_prepend (CRStatement * a_this, CRStatement * a_new) +{ + CRStatement *cur = NULL; + + g_return_val_if_fail (a_new, NULL); + + if (!a_this) + return a_new; + + a_new->next = a_this; + a_this->prev = a_new; + + /*walk backward in the prepended list to find the head list element */ + for (cur = a_new; cur && cur->prev; cur = cur->prev) ; + + return cur; +} + +/** + * cr_statement_unlink: + * + *@a_this: the current statements list. + *@a_to_unlink: the statement to unlink from the list. + * + *Unlinks a statement from the statements list. + * + *Returns the new list where a_to_unlink has been unlinked + *from, or NULL in case of error. + */ +CRStatement * +cr_statement_unlink (CRStatement * a_stmt) +{ + CRStatement *result = a_stmt; + + g_return_val_if_fail (result, NULL); + + /** + *Some sanity checks first + */ + if (a_stmt->next) { + g_return_val_if_fail (a_stmt->next->prev == a_stmt, NULL); + } + if (a_stmt->prev) { + g_return_val_if_fail (a_stmt->prev->next == a_stmt, NULL); + } + + /** + *Now, the real unlinking job. + */ + if (a_stmt->next) { + a_stmt->next->prev = a_stmt->prev; + } + if (a_stmt->prev) { + a_stmt->prev->next = a_stmt->next; + } + + if (a_stmt->parent_sheet + && a_stmt->parent_sheet->statements == a_stmt) { + a_stmt->parent_sheet->statements = + a_stmt->parent_sheet->statements->next; + } + + a_stmt->next = NULL; + a_stmt->prev = NULL; + a_stmt->parent_sheet = NULL; + + return result; +} + +/** + * cr_statement_nr_rules: + * + *@a_this: the current instance of #CRStatement. + * + *Gets the number of rules in the statement list; + * + *Returns number of rules in the statement list. + */ +gint +cr_statement_nr_rules (CRStatement const * a_this) +{ + CRStatement const *cur = NULL; + int nr = 0; + + g_return_val_if_fail (a_this, -1); + + for (cur = a_this; cur; cur = cur->next) + nr++; + return nr; +} + +/** + * cr_statement_get_from_list: + * + *@a_this: the current instance of #CRStatement. + *@itemnr: the index into the statement list. + * + *Use an index to get a CRStatement from the statement list. + * + *Returns CRStatement at position itemnr, if itemnr > number of statements - 1, + *it will return NULL. + */ +CRStatement * +cr_statement_get_from_list (CRStatement * a_this, int itemnr) +{ + CRStatement *cur = NULL; + int nr = 0; + + g_return_val_if_fail (a_this, NULL); + + for (cur = a_this; cur; cur = cur->next) + if (nr++ == itemnr) + return cur; + return NULL; +} + +/** + * cr_statement_ruleset_set_sel_list: + * + *@a_this: the current ruleset statement. + *@a_sel_list: the selector list to set. Note + *that this function increments the ref count of a_sel_list. + *The sel list will be destroyed at the destruction of the + *current instance of #CRStatement. + * + *Sets a selector list to a ruleset statement. + * + *Returns CR_OK upon successful completion, an error code otherwise. + */ +enum CRStatus +cr_statement_ruleset_set_sel_list (CRStatement * a_this, + CRSelector * a_sel_list) +{ + g_return_val_if_fail (a_this && a_this->type == RULESET_STMT, + CR_BAD_PARAM_ERROR); + + if (a_this->kind.ruleset->sel_list) + cr_selector_unref (a_this->kind.ruleset->sel_list); + + a_this->kind.ruleset->sel_list = a_sel_list; + + if (a_sel_list) + cr_selector_ref (a_sel_list); + + return CR_OK; +} + +/** + * cr_statement_ruleset_get_declarations: + * + *@a_this: the current instance of #CRStatement. + *@a_decl_list: out parameter. A pointer to the the returned + *list of declaration. Must not be NULL. + * + *Gets a pointer to the list of declaration contained + *in the ruleset statement. + * + *Returns CR_OK upon successful completion, an error code if something + *bad happened. + */ +enum CRStatus +cr_statement_ruleset_get_declarations (CRStatement * a_this, + CRDeclaration ** a_decl_list) +{ + g_return_val_if_fail (a_this + && a_this->type == RULESET_STMT + && a_this->kind.ruleset + && a_decl_list, CR_BAD_PARAM_ERROR); + + *a_decl_list = a_this->kind.ruleset->decl_list; + + return CR_OK; +} + +/** + * cr_statement_ruleset_get_sel_list: + * + *@a_this: the current ruleset statement. + *@a_list: out parameter. The returned selector list, + *if and only if the function returned CR_OK. + * + *Gets a pointer to the selector list contained in + *the current ruleset statement. + * + *Returns CR_OK upon successful completion, an error code otherwise. + */ +enum CRStatus +cr_statement_ruleset_get_sel_list (CRStatement const * a_this, CRSelector ** a_list) +{ + g_return_val_if_fail (a_this && a_this->type == RULESET_STMT + && a_this->kind.ruleset, CR_BAD_PARAM_ERROR); + + *a_list = a_this->kind.ruleset->sel_list; + + return CR_OK; +} + +/** + * cr_statement_ruleset_set_decl_list: + * + *@a_this: the current ruleset statement. + *@a_list: the declaration list to be added to the current + *ruleset statement. + * + *Sets a declaration list to the current ruleset statement. + * + *Returns CR_OK upon successful completion, an error code otherwise. + */ +enum CRStatus +cr_statement_ruleset_set_decl_list (CRStatement * a_this, + CRDeclaration * a_list) +{ + g_return_val_if_fail (a_this && a_this->type == RULESET_STMT + && a_this->kind.ruleset, CR_BAD_PARAM_ERROR); + + if (a_this->kind.ruleset->decl_list == a_list) + return CR_OK; + + if (a_this->kind.ruleset->sel_list) { + cr_declaration_destroy (a_this->kind.ruleset->decl_list); + } + + a_this->kind.ruleset->sel_list = NULL; + + return CR_OK; +} + +/** + * cr_statement_ruleset_append_decl2: + * + *@a_this: the current statement. + *@a_prop: the property of the declaration. + *@a_value: the value of the declaration. + * + *Appends a declaration to the current ruleset statement. + * + *Returns CR_OK upon successful completion, an error code + *otherwise. + */ +enum CRStatus +cr_statement_ruleset_append_decl2 (CRStatement * a_this, + CRString * a_prop, + CRTerm * a_value) +{ + CRDeclaration *new_decls = NULL; + + g_return_val_if_fail (a_this && a_this->type == RULESET_STMT + && a_this->kind.ruleset, CR_BAD_PARAM_ERROR); + + new_decls = cr_declaration_append2 + (a_this->kind.ruleset->decl_list, + a_prop, a_value); + g_return_val_if_fail (new_decls, CR_ERROR); + a_this->kind.ruleset->decl_list = new_decls; + + return CR_OK; +} + +/** + * cr_statement_ruleset_append_decl: + * + *Appends a declaration to the current statement. + * + *@a_this: the current statement. + *@a_declaration: the declaration to append. + * + *Returns CR_OK upon successful completion, an error code + *otherwise. + */ +enum CRStatus +cr_statement_ruleset_append_decl (CRStatement * a_this, + CRDeclaration * a_decl) +{ + CRDeclaration *new_decls = NULL; + + g_return_val_if_fail (a_this && a_this->type == RULESET_STMT + && a_this->kind.ruleset, CR_BAD_PARAM_ERROR); + + new_decls = cr_declaration_append + (a_this->kind.ruleset->decl_list, a_decl); + g_return_val_if_fail (new_decls, CR_ERROR); + a_this->kind.ruleset->decl_list = new_decls; + + return CR_OK; +} + +/** + * cr_statement_at_import_rule_set_imported_sheet: + * + *Sets a stylesheet to the current \@import rule. + *@a_this: the current \@import rule. + *@a_sheet: the stylesheet. The stylesheet is owned + *by the current instance of #CRStatement, that is, the + *stylesheet will be destroyed when the current instance + *of #CRStatement is destroyed. + * + *Returns CR_OK upon successful completion, an error code otherwise. + */ +enum CRStatus +cr_statement_at_import_rule_set_imported_sheet (CRStatement * a_this, + CRStyleSheet * a_sheet) +{ + g_return_val_if_fail (a_this + && a_this->type == AT_IMPORT_RULE_STMT + && a_this->kind.import_rule, + CR_BAD_PARAM_ERROR); + + a_this->kind.import_rule->sheet = a_sheet; + + return CR_OK; +} + +/** + * cr_statement_at_import_rule_get_imported_sheet: + * + *@a_this: the current \@import rule statement. + *@a_sheet: out parameter. The returned stylesheet if and + *only if the function returns CR_OK. + * + *Gets the stylesheet contained by the \@import rule statement. + *Returns CR_OK upon successful completion, an error code otherwise. + */ +enum CRStatus +cr_statement_at_import_rule_get_imported_sheet (CRStatement * a_this, + CRStyleSheet ** a_sheet) +{ + g_return_val_if_fail (a_this + && a_this->type == AT_IMPORT_RULE_STMT + && a_this->kind.import_rule, + CR_BAD_PARAM_ERROR); + *a_sheet = a_this->kind.import_rule->sheet; + return CR_OK; + +} + +/** + * cr_statement_at_import_rule_set_url: + * + *@a_this: the current \@import rule statement. + *@a_url: the url to set. + * + *Sets an url to the current \@import rule statement. + * + *Returns CR_OK upon successful completion, an error code otherwise. + */ +enum CRStatus +cr_statement_at_import_rule_set_url (CRStatement * a_this, + CRString * a_url) +{ + g_return_val_if_fail (a_this + && a_this->type == AT_IMPORT_RULE_STMT + && a_this->kind.import_rule, + CR_BAD_PARAM_ERROR); + + if (a_this->kind.import_rule->url) { + cr_string_destroy (a_this->kind.import_rule->url); + } + + a_this->kind.import_rule->url = a_url; + + return CR_OK; +} + +/** + * cr_statement_at_import_rule_get_url: + * + *@a_this: the current \@import rule statement. + *@a_url: out parameter. The returned url if + *and only if the function returned CR_OK. + * + *Gets the url of the \@import rule statement. + *Returns CR_OK upon successful completion, an error code otherwise. + */ +enum CRStatus +cr_statement_at_import_rule_get_url (CRStatement const * a_this, + CRString ** a_url) +{ + g_return_val_if_fail (a_this + && a_this->type == AT_IMPORT_RULE_STMT + && a_this->kind.import_rule, + CR_BAD_PARAM_ERROR); + + *a_url = a_this->kind.import_rule->url; + + return CR_OK; +} + +/** + * cr_statement_at_media_nr_rules: + * + *@a_this: the current instance of #CRStatement. + * + *Returns the number of rules in the media rule; + */ +int +cr_statement_at_media_nr_rules (CRStatement const * a_this) +{ + g_return_val_if_fail (a_this + && a_this->type == AT_MEDIA_RULE_STMT + && a_this->kind.media_rule, CR_BAD_PARAM_ERROR); + + return cr_statement_nr_rules (a_this->kind.media_rule->rulesets); +} + +/** + * cr_statement_at_media_get_from_list: + * + *@a_this: the current instance of #CRStatement. + *@itemnr: the index into the media rule list of rules. + * + *Use an index to get a CRStatement from the media rule list of rules. + * + *Returns CRStatement at position itemnr, if itemnr > number of rules - 1, + *it will return NULL. + */ +CRStatement * +cr_statement_at_media_get_from_list (CRStatement * a_this, int itemnr) +{ + g_return_val_if_fail (a_this + && a_this->type == AT_MEDIA_RULE_STMT + && a_this->kind.media_rule, NULL); + + return cr_statement_get_from_list (a_this->kind.media_rule->rulesets, + itemnr); +} + +/** + * cr_statement_at_page_rule_set_declarations: + * + *@a_this: the current \@page rule statement. + *@a_decl_list: the declaration list to add. Will be freed + *by the current instance of #CRStatement when it is destroyed. + * + *Sets a declaration list to the current \@page rule statement. + * + *Returns CR_OK upon successful completion, an error code otherwise. + */ +enum CRStatus +cr_statement_at_page_rule_set_declarations (CRStatement * a_this, + CRDeclaration * a_decl_list) +{ + g_return_val_if_fail (a_this + && a_this->type == AT_PAGE_RULE_STMT + && a_this->kind.page_rule, CR_BAD_PARAM_ERROR); + + if (a_this->kind.page_rule->decl_list) { + cr_declaration_unref (a_this->kind.page_rule->decl_list); + } + + a_this->kind.page_rule->decl_list = a_decl_list; + + if (a_decl_list) { + cr_declaration_ref (a_decl_list); + } + + return CR_OK; +} + +/** + * cr_statement_at_page_rule_get_declarations: + * + *@a_this: the current \@page rule statement. + *@a_decl_list: out parameter. The returned declaration list. + * + *Gets the declaration list associated to the current \@page rule + *statement. + * + *Returns CR_OK upon successful completion, an error code otherwise. + */ +enum CRStatus +cr_statement_at_page_rule_get_declarations (CRStatement * a_this, + CRDeclaration ** a_decl_list) +{ + g_return_val_if_fail (a_this + && a_this->type == AT_PAGE_RULE_STMT + && a_this->kind.page_rule, CR_BAD_PARAM_ERROR); + + *a_decl_list = a_this->kind.page_rule->decl_list; + + return CR_OK; +} + +/** + * cr_statement_at_charset_rule_set_charset: + * + * + *@a_this: the current \@charset rule statement. + *@a_charset: the charset to set. + * + *Sets the charset of the current \@charset rule statement. + * + *Returns CR_OK upon successful completion, an error code otherwise. + */ +enum CRStatus +cr_statement_at_charset_rule_set_charset (CRStatement * a_this, + CRString * a_charset) +{ + g_return_val_if_fail (a_this + && a_this->type == AT_CHARSET_RULE_STMT + && a_this->kind.charset_rule, + CR_BAD_PARAM_ERROR); + + if (a_this->kind.charset_rule->charset) { + cr_string_destroy (a_this->kind.charset_rule->charset); + } + a_this->kind.charset_rule->charset = a_charset; + return CR_OK; +} + +/** + * cr_statement_at_charset_rule_get_charset: + *@a_this: the current \@charset rule statement. + *@a_charset: out parameter. The returned charset string if + *and only if the function returned CR_OK. + * + *Gets the charset string associated to the current + *\@charset rule statement. + * + * Returns CR_OK upon successful completion, an error code otherwise. + */ +enum CRStatus +cr_statement_at_charset_rule_get_charset (CRStatement const * a_this, + CRString ** a_charset) +{ + g_return_val_if_fail (a_this + && a_this->type == AT_CHARSET_RULE_STMT + && a_this->kind.charset_rule, + CR_BAD_PARAM_ERROR); + + *a_charset = a_this->kind.charset_rule->charset; + + return CR_OK; +} + +/** + * cr_statement_at_font_face_rule_set_decls: + * + *@a_this: the current \@font-face rule statement. + *@a_decls: the declarations list to set. + * + *Sets a declaration list to the current \@font-face rule statement. + * + *Returns CR_OK upon successful completion, an error code otherwise. + */ +enum CRStatus +cr_statement_at_font_face_rule_set_decls (CRStatement * a_this, + CRDeclaration * a_decls) +{ + g_return_val_if_fail (a_this + && a_this->type == AT_FONT_FACE_RULE_STMT + && a_this->kind.font_face_rule, + CR_BAD_PARAM_ERROR); + + if (a_this->kind.font_face_rule->decl_list) { + cr_declaration_unref (a_this->kind.font_face_rule->decl_list); + } + + a_this->kind.font_face_rule->decl_list = a_decls; + cr_declaration_ref (a_decls); + + return CR_OK; +} + +/** + * cr_statement_at_font_face_rule_get_decls: + * + *@a_this: the current \@font-face rule statement. + *@a_decls: out parameter. The returned declaration list if + *and only if this function returns CR_OK. + * + *Gets the declaration list associated to the current instance + *of \@font-face rule statement. + * + *Returns CR_OK upon successful completion, an error code otherwise. + */ +enum CRStatus +cr_statement_at_font_face_rule_get_decls (CRStatement * a_this, + CRDeclaration ** a_decls) +{ + g_return_val_if_fail (a_this + && a_this->type == AT_FONT_FACE_RULE_STMT + && a_this->kind.font_face_rule, + CR_BAD_PARAM_ERROR); + + *a_decls = a_this->kind.font_face_rule->decl_list; + + return CR_OK; +} + +/** + * cr_statement_at_font_face_rule_add_decl: + * + *@a_this: the current \@font-face rule statement. + *@a_prop: the property of the declaration. + *@a_value: the value of the declaration. + * + *Adds a declaration to the current \@font-face rule + *statement. + * + *Returns CR_OK upon successful completion, an error code otherwise. + */ +enum CRStatus +cr_statement_at_font_face_rule_add_decl (CRStatement * a_this, + CRString * a_prop, CRTerm * a_value) +{ + CRDeclaration *decls = NULL; + + g_return_val_if_fail (a_this + && a_this->type == AT_FONT_FACE_RULE_STMT + && a_this->kind.font_face_rule, + CR_BAD_PARAM_ERROR); + + decls = cr_declaration_append2 + (a_this->kind.font_face_rule->decl_list, + a_prop, a_value); + + g_return_val_if_fail (decls, CR_ERROR); + + if (a_this->kind.font_face_rule->decl_list == NULL) + cr_declaration_ref (decls); + + a_this->kind.font_face_rule->decl_list = decls; + + return CR_OK; +} + + +/** + * cr_statement_to_string: + * + *@a_this: the current statement to serialize + *@a_indent: the number of white space of indentation. + * + *Serializes a css statement into a string + * + *Returns the serialized statement. Must be freed by the caller + *using g_free(). + */ +gchar * +cr_statement_to_string (CRStatement const * a_this, gulong a_indent) +{ + gchar *str = NULL ; + + if (!a_this) + return NULL; + + switch (a_this->type) { + case RULESET_STMT: + str = cr_statement_ruleset_to_string + (a_this, a_indent); + break; + + case AT_FONT_FACE_RULE_STMT: + str = cr_statement_font_face_rule_to_string + (a_this, a_indent) ; + break; + + case AT_CHARSET_RULE_STMT: + str = cr_statement_charset_to_string + (a_this, a_indent); + break; + + case AT_PAGE_RULE_STMT: + str = cr_statement_at_page_rule_to_string + (a_this, a_indent); + break; + + case AT_MEDIA_RULE_STMT: + str = cr_statement_media_rule_to_string + (a_this, a_indent); + break; + + case AT_IMPORT_RULE_STMT: + str = cr_statement_import_rule_to_string + (a_this, a_indent); + break; + + default: + cr_utils_trace_info ("Statement unrecognized"); + break; + } + return str ; +} + +gchar* +cr_statement_list_to_string (CRStatement const *a_this, gulong a_indent) +{ + CRStatement const *cur_stmt = NULL ; + GString *stringue = NULL ; + gchar *str = NULL ; + + g_return_val_if_fail (a_this, NULL) ; + + stringue = g_string_new (NULL) ; + if (!stringue) { + cr_utils_trace_info ("Out of memory") ; + return NULL ; + } + for (cur_stmt = a_this ; cur_stmt; + cur_stmt = cur_stmt->next) { + str = cr_statement_to_string (cur_stmt, a_indent) ; + if (str) { + if (!cur_stmt->prev) { + g_string_append (stringue, str) ; + } else { + g_string_append_printf + (stringue, "\n%s", str) ; + } + g_free (str) ; + str = NULL ; + } + } + str = g_string_free (stringue, FALSE) ; + return str ; +} + +/** + * cr_statement_dump: + * + *@a_this: the current css2 statement. + *@a_fp: the destination file pointer. + *@a_indent: the number of white space indentation characters. + * + *Dumps the css2 statement to a file. + */ +void +cr_statement_dump (CRStatement const * a_this, FILE * a_fp, gulong a_indent) +{ + gchar *str = NULL ; + + if (!a_this) + return; + + str = cr_statement_to_string (a_this, a_indent) ; + if (str) { + fprintf (a_fp, "%s",str) ; + g_free (str) ; + str = NULL ; + } +} + +/** + * cr_statement_dump_ruleset: + * + *@a_this: the current instance of #CRStatement. + *@a_fp: the destination file pointer. + *@a_indent: the number of indentation white spaces to add. + * + *Dumps a ruleset statement to a file. + */ +void +cr_statement_dump_ruleset (CRStatement const * a_this, FILE * a_fp, glong a_indent) +{ + gchar *str = NULL; + + g_return_if_fail (a_fp && a_this); + str = cr_statement_ruleset_to_string (a_this, a_indent); + if (str) { + fprintf (a_fp, "%s", str); + g_free (str); + str = NULL; + } +} + +/** + * cr_statement_dump_font_face_rule: + * + *@a_this: the current instance of font face rule statement. + *@a_fp: the destination file pointer. + *@a_indent: the number of white space indentation. + * + *Dumps a font face rule statement to a file. + */ +void +cr_statement_dump_font_face_rule (CRStatement const * a_this, FILE * a_fp, + glong a_indent) +{ + gchar *str = NULL ; + g_return_if_fail (a_this + && a_this->type == AT_FONT_FACE_RULE_STMT); + + str = cr_statement_font_face_rule_to_string (a_this, + a_indent) ; + if (str) { + fprintf (a_fp, "%s", str) ; + g_free (str) ; + str = NULL ; + } +} + +/** + * cr_statement_dump_charset: + * + *@a_this: the current instance of the \@charset rule statement. + *@a_fp: the destination file pointer. + *@a_indent: the number of indentation white spaces. + * + *Dumps an \@charset rule statement to a file. + */ +void +cr_statement_dump_charset (CRStatement const * a_this, FILE * a_fp, gulong a_indent) +{ + gchar *str = NULL; + + g_return_if_fail (a_this && a_this->type == AT_CHARSET_RULE_STMT); + + str = cr_statement_charset_to_string (a_this, + a_indent) ; + if (str) { + fprintf (a_fp, "%s", str) ; + g_free (str) ; + str = NULL ; + } +} + + +/** + * cr_statement_dump_page: + * + *@a_this: the statement to dump on stdout. + *@a_fp: the destination file pointer. + *@a_indent: the number of indentation white spaces. + * + *Dumps an \@page rule statement on stdout. + */ +void +cr_statement_dump_page (CRStatement const * a_this, FILE * a_fp, gulong a_indent) +{ + gchar *str = NULL; + + g_return_if_fail (a_this + && a_this->type == AT_PAGE_RULE_STMT + && a_this->kind.page_rule); + + str = cr_statement_at_page_rule_to_string (a_this, a_indent) ; + if (str) { + fprintf (a_fp, "%s", str); + g_free (str) ; + str = NULL ; + } +} + + +/** + * cr_statement_dump_media_rule: + * + *@a_this: the statement to dump. + *@a_fp: the destination file pointer + *@a_indent: the number of white spaces indentation. + * + *Dumps an \@media rule statement to a file. + */ +void +cr_statement_dump_media_rule (CRStatement const * a_this, + FILE * a_fp, + gulong a_indent) +{ + gchar *str = NULL ; + g_return_if_fail (a_this->type == AT_MEDIA_RULE_STMT); + + str = cr_statement_media_rule_to_string (a_this, a_indent) ; + if (str) { + fprintf (a_fp, "%s", str) ; + g_free (str) ; + str = NULL ; + } +} + +/** + * cr_statement_dump_import_rule: + * + *@a_fp: the destination file pointer. + *@a_indent: the number of white space indentations. + * + *Dumps an \@import rule statement to a file. + */ +void +cr_statement_dump_import_rule (CRStatement const * a_this, FILE * a_fp, + gulong a_indent) +{ + gchar *str = NULL ; + g_return_if_fail (a_this + && a_this->type == AT_IMPORT_RULE_STMT + && a_fp + && a_this->kind.import_rule); + + str = cr_statement_import_rule_to_string (a_this, a_indent) ; + if (str) { + fprintf (a_fp, "%s", str) ; + g_free (str) ; + str = NULL ; + } +} + +/** + * cr_statement_destroy: + * + * @a_this: the current instance of #CRStatement. + * + *Destructor of #CRStatement. + */ +void +cr_statement_destroy (CRStatement * a_this) +{ + CRStatement *cur = NULL; + + g_return_if_fail (a_this); + + /*go get the tail of the list */ + for (cur = a_this; cur && cur->next; cur = cur->next) { + cr_statement_clear (cur); + } + + if (cur) + cr_statement_clear (cur); + + if (cur->prev == NULL) { + g_free (a_this); + return; + } + + /*walk backward and free next element */ + for (cur = cur->prev; cur && cur->prev; cur = cur->prev) { + if (cur->next) { + g_free (cur->next); + cur->next = NULL; + } + } + + if (!cur) + return; + + /*free the one remaining list */ + if (cur->next) { + g_free (cur->next); + cur->next = NULL; + } + + g_free (cur); + cur = NULL; +} diff --git a/src/st/croco/cr-statement.h b/src/st/croco/cr-statement.h new file mode 100644 index 0000000..c5bec97 --- /dev/null +++ b/src/st/croco/cr-statement.h @@ -0,0 +1,440 @@ +/* -*- Mode: C; indent-tabs-mode: nil; c-basic-offset: 8 -*- */ + +/* + * This file is part of The Croco Library + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of version 2.1 of the GNU Lesser General Public + * License as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 + * USA + * + * Author: Dodji Seketeli + * See COPYRIGHTS file for copyright information. + */ + +#include <stdio.h> +#include "cr-utils.h" +#include "cr-term.h" +#include "cr-selector.h" +#include "cr-declaration.h" + +#ifndef __CR_STATEMENT_H__ +#define __CR_STATEMENT_H__ + +G_BEGIN_DECLS + +/** + *@file + *Declaration of the #CRStatement class. + */ + +/* + *forward declaration of CRStyleSheet which is defined in + *cr-stylesheet.h + */ + +struct _CRStatement ; + +/* + *typedef struct _CRStatement CRStatement ; + *this is forward declared in + *cr-declaration.h already. + */ + +struct _CRAtMediaRule ; +typedef struct _CRAtMediaRule CRAtMediaRule ; + +typedef struct _CRRuleSet CRRuleSet ; + +/** + *The abstraction of a css ruleset. + *A ruleset is made of a list of selectors, + *followed by a list of declarations. + */ +struct _CRRuleSet +{ + /**A list of instances of #CRSimpeSel*/ + CRSelector *sel_list ; + + /**A list of instances of #CRDeclaration*/ + CRDeclaration *decl_list ; + + /** + *The parent media rule, or NULL if + *no parent media rule exists. + */ + CRStatement *parent_media_rule ; +} ; + +/* + *a forward declaration of CRStylesheet. + *CRStylesheet is actually declared in + *cr-stylesheet.h + */ +struct _CRStyleSheet ; +typedef struct _CRStyleSheet CRStyleSheet; + + +/**The \@import rule abstraction.*/ +typedef struct _CRAtImportRule CRAtImportRule ; +struct _CRAtImportRule +{ + /**the url of the import rule*/ + CRString *url ; + + GList *media_list ; + + /** + *the stylesheet fetched from the url, if any. + *this is not "owned" by #CRAtImportRule which means + *it is not destroyed by the destructor of #CRAtImportRule. + */ + CRStyleSheet * sheet; +}; + + +/**abstraction of an \@media rule*/ +struct _CRAtMediaRule +{ + GList *media_list ; + CRStatement *rulesets ; +} ; + + +typedef struct _CRAtPageRule CRAtPageRule ; +/**The \@page rule abstraction*/ +struct _CRAtPageRule +{ + /**a list of instances of #CRDeclaration*/ + CRDeclaration *decl_list ; + + /**page selector. Is a pseudo selector*/ + CRString *name ; + CRString *pseudo ; +} ; + +/**The \@charset rule abstraction*/ +typedef struct _CRAtCharsetRule CRAtCharsetRule ; +struct _CRAtCharsetRule +{ + CRString * charset ; +}; + +/**The abstraction of the \@font-face rule.*/ +typedef struct _CRAtFontFaceRule CRAtFontFaceRule ; +struct _CRAtFontFaceRule +{ + /*a list of instanaces of #CRDeclaration*/ + CRDeclaration *decl_list ; +} ; + + +/** + *The possible types of css2 statements. + */ +enum CRStatementType +{ + /** + *A generic css at-rule + *each unknown at-rule will + *be of this type. + */ + + /**A css at-rule*/ + AT_RULE_STMT = 0, + + /*A css ruleset*/ + RULESET_STMT, + + /**A css2 import rule*/ + AT_IMPORT_RULE_STMT, + + /**A css2 media rule*/ + AT_MEDIA_RULE_STMT, + + /**A css2 page rule*/ + AT_PAGE_RULE_STMT, + + /**A css2 charset rule*/ + AT_CHARSET_RULE_STMT, + + /**A css2 font face rule*/ + AT_FONT_FACE_RULE_STMT +} ; + + +/** + *The abstraction of css statement as defined + *in the chapter 4 and appendix D.1 of the css2 spec. + *A statement is actually a double chained list of + *statements.A statement can be a ruleset, an \@import + *rule, an \@page rule etc ... + */ +struct _CRStatement +{ + /** + *The type of the statement. + */ + enum CRStatementType type ; + + union + { + CRRuleSet *ruleset ; + CRAtImportRule *import_rule ; + CRAtMediaRule *media_rule ; + CRAtPageRule *page_rule ; + CRAtCharsetRule *charset_rule ; + CRAtFontFaceRule *font_face_rule ; + } kind ; + + /* + *the specificity of the selector + *that matched this statement. + *This is only used by the cascading + *order determination algorithm. + */ + gulong specificity ; + + /* + *the style sheet that contains + *this css statement. + */ + CRStyleSheet *parent_sheet ; + CRStatement *next ; + CRStatement *prev ; + + CRParsingLocation location ; + + /** + *a custom pointer useable by + *applications that use libcroco. + *libcroco itself will never modify + *this pointer. + */ + gpointer app_data ; + + /** + *a custom pointer used + *by the upper layers of libcroco. + *application should never use this + *pointer. + */ + gpointer croco_data ; + +} ; + + +gboolean +cr_statement_does_buf_parses_against_core (const guchar *a_buf, + enum CREncoding a_encoding) ; +CRStatement * +cr_statement_parse_from_buf (const guchar *a_buf, + enum CREncoding a_encoding) ; +CRStatement* +cr_statement_new_ruleset (CRStyleSheet *a_sheet, + CRSelector *a_sel_list, + CRDeclaration *a_decl_list, + CRStatement *a_media_rule) ; +CRStatement * +cr_statement_ruleset_parse_from_buf (const guchar * a_buf, + enum CREncoding a_enc) ; + +CRStatement* +cr_statement_new_at_import_rule (CRStyleSheet *a_container_sheet, + CRString *a_url, + GList *a_media_list, + CRStyleSheet *a_imported_sheet) ; + +CRStatement * +cr_statement_at_import_rule_parse_from_buf (const guchar * a_buf, + enum CREncoding a_encoding) ; + +CRStatement * +cr_statement_new_at_media_rule (CRStyleSheet *a_sheet, + CRStatement *a_ruleset, + GList *a_media) ; +CRStatement * +cr_statement_at_media_rule_parse_from_buf (const guchar *a_buf, + enum CREncoding a_enc) ; + +CRStatement * +cr_statement_new_at_charset_rule (CRStyleSheet *a_sheet, + CRString *a_charset) ; +CRStatement * +cr_statement_at_charset_rule_parse_from_buf (const guchar *a_buf, + enum CREncoding a_encoding); + + +CRStatement * +cr_statement_new_at_font_face_rule (CRStyleSheet *a_sheet, + CRDeclaration *a_font_decls) ; +CRStatement * +cr_statement_font_face_rule_parse_from_buf (const guchar *a_buf, + enum CREncoding a_encoding) ; + +CRStatement * +cr_statement_new_at_page_rule (CRStyleSheet *a_sheet, + CRDeclaration *a_decl_list, + CRString *a_name, + CRString *a_pseudo) ; +CRStatement * +cr_statement_at_page_rule_parse_from_buf (const guchar *a_buf, + enum CREncoding a_encoding) ; + +enum CRStatus +cr_statement_set_parent_sheet (CRStatement *a_this, + CRStyleSheet *a_sheet) ; + +enum CRStatus +cr_statement_get_parent_sheet (CRStatement *a_this, + CRStyleSheet **a_sheet) ; + +CRStatement * +cr_statement_append (CRStatement *a_this, + CRStatement *a_new) ; + +CRStatement* +cr_statement_prepend (CRStatement *a_this, + CRStatement *a_new) ; + +CRStatement * +cr_statement_unlink (CRStatement *a_stmt) ; + +enum CRStatus +cr_statement_ruleset_set_sel_list (CRStatement *a_this, + CRSelector *a_sel_list) ; + +enum CRStatus +cr_statement_ruleset_get_sel_list (CRStatement const *a_this, + CRSelector **a_list) ; + +enum CRStatus +cr_statement_ruleset_set_decl_list (CRStatement *a_this, + CRDeclaration *a_list) ; + +enum CRStatus +cr_statement_ruleset_get_declarations (CRStatement *a_this, + CRDeclaration **a_decl_list) ; + +enum CRStatus +cr_statement_ruleset_append_decl2 (CRStatement *a_this, + CRString *a_prop, CRTerm *a_value) ; + +enum CRStatus +cr_statement_ruleset_append_decl (CRStatement *a_this, + CRDeclaration *a_decl) ; + +enum CRStatus +cr_statement_at_import_rule_set_imported_sheet (CRStatement *a_this, + CRStyleSheet *a_sheet) ; + +enum CRStatus +cr_statement_at_import_rule_get_imported_sheet (CRStatement *a_this, + CRStyleSheet **a_sheet) ; + +enum CRStatus +cr_statement_at_import_rule_set_url (CRStatement *a_this, + CRString *a_url) ; + +enum CRStatus +cr_statement_at_import_rule_get_url (CRStatement const *a_this, + CRString **a_url) ; + +gint +cr_statement_at_media_nr_rules (CRStatement const *a_this) ; + +CRStatement * +cr_statement_at_media_get_from_list (CRStatement *a_this, int itemnr) ; + +enum CRStatus +cr_statement_at_page_rule_set_sel (CRStatement *a_this, + CRSelector *a_sel) ; + +enum CRStatus +cr_statement_at_page_rule_get_sel (CRStatement const *a_this, + CRSelector **a_sel) ; + +enum CRStatus +cr_statement_at_page_rule_set_declarations (CRStatement *a_this, + CRDeclaration *a_decl_list) ; + +enum CRStatus +cr_statement_at_page_rule_get_declarations (CRStatement *a_this, + CRDeclaration **a_decl_list) ; + +enum CRStatus +cr_statement_at_charset_rule_set_charset (CRStatement *a_this, + CRString *a_charset) ; + +enum CRStatus +cr_statement_at_charset_rule_get_charset (CRStatement const *a_this, + CRString **a_charset) ; + +enum CRStatus +cr_statement_at_font_face_rule_set_decls (CRStatement *a_this, + CRDeclaration *a_decls) ; + +enum CRStatus +cr_statement_at_font_face_rule_get_decls (CRStatement *a_this, + CRDeclaration **a_decls) ; + +enum CRStatus +cr_statement_at_font_face_rule_add_decl (CRStatement *a_this, + CRString *a_prop, + CRTerm *a_value) ; + +gchar * +cr_statement_to_string (CRStatement const * a_this, gulong a_indent) ; + +gchar* +cr_statement_list_to_string (CRStatement const *a_this, gulong a_indent) ; + +void +cr_statement_dump (CRStatement const *a_this, FILE *a_fp, gulong a_indent) ; + +void +cr_statement_dump_ruleset (CRStatement const * a_this, FILE * a_fp, + glong a_indent) ; + +void +cr_statement_dump_font_face_rule (CRStatement const * a_this, + FILE * a_fp, + glong a_indent) ; + +void +cr_statement_dump_page (CRStatement const * a_this, FILE * a_fp, + gulong a_indent) ; + + +void +cr_statement_dump_media_rule (CRStatement const * a_this, + FILE * a_fp, + gulong a_indent) ; + +void +cr_statement_dump_import_rule (CRStatement const * a_this, FILE * a_fp, + gulong a_indent) ; +void +cr_statement_dump_charset (CRStatement const * a_this, FILE * a_fp, + gulong a_indent) ; +gint +cr_statement_nr_rules (CRStatement const *a_this) ; + +CRStatement * +cr_statement_get_from_list (CRStatement *a_this, int itemnr) ; + +void +cr_statement_destroy (CRStatement *a_this) ; + +G_END_DECLS + +#endif /*__CR_STATEMENT_H__*/ diff --git a/src/st/croco/cr-string.c b/src/st/croco/cr-string.c new file mode 100644 index 0000000..6a16676 --- /dev/null +++ b/src/st/croco/cr-string.c @@ -0,0 +1,168 @@ +/* -*- Mode: C; indent-tabs-mode:nil; c-basic-offset: 8-*- */ + +/* + * This file is part of The Croco Library + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of version 2.1 of the GNU Lesser General Public + * License as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 + * USA + * + * Author: Dodji Seketeli. + * See COPYRIGHTS file for copyright information. + */ + +#include <string.h> +#include "cr-string.h" + +/** + *Instantiates a #CRString + *@return the newly instantiated #CRString + *Must be freed with cr_string_destroy(). + */ +CRString * +cr_string_new (void) +{ + CRString *result = NULL ; + + result = g_try_malloc (sizeof (CRString)) ; + if (!result) { + cr_utils_trace_info ("Out of memory") ; + return NULL ; + } + memset (result, 0, sizeof (CRString)) ; + result->stryng = g_string_new (NULL) ; + return result ; +} + +/** + *Instantiate a string and initialise it to + *a_string. + *@param a_string the initial string + *@return the newly instantiated string. + */ +CRString * +cr_string_new_from_string (const gchar * a_string) +{ + CRString *result = NULL ; + + result = cr_string_new () ; + if (!result) { + cr_utils_trace_info ("Out of memory") ; + return NULL ; + } + if (a_string) + g_string_append (result->stryng, a_string) ; + return result ; +} + +/** + *Instantiates a #CRString from an instance of GString. + *@param a_string the input string that will be copied into + *the newly instantiated #CRString + *@return the newly instantiated #CRString. + */ +CRString * +cr_string_new_from_gstring (GString const *a_string) +{ + CRString *result = NULL ; + + result = cr_string_new () ; + if (!result) { + cr_utils_trace_info ("Out of memory") ; + return NULL ; + } + if (a_string) { + g_string_append_len (result->stryng, + a_string->str, + a_string->len); + + } + return result ; +} + +CRString * +cr_string_dup (CRString const *a_this) +{ + CRString *result = NULL ; + g_return_val_if_fail (a_this, NULL) ; + + result = cr_string_new_from_gstring (a_this->stryng) ; + if (!result) { + cr_utils_trace_info ("Out of memory") ; + return NULL ; + } + cr_parsing_location_copy (&result->location, + &a_this->location) ; + return result ; +} + +gchar * +cr_string_dup2 (CRString const *a_this) +{ + gchar *result = NULL ; + + g_return_val_if_fail (a_this, NULL) ; + + if (a_this + && a_this->stryng + && a_this->stryng->str) { + result = g_strndup (a_this->stryng->str, + a_this->stryng->len) ; + } + return result ; +} + +/** + *Returns a pointer to the internal raw NULL terminated string + *of the current instance of #CRString. + *@param a_this the current instance of #CRString + */ +const gchar * +cr_string_peek_raw_str (CRString const *a_this) +{ + g_return_val_if_fail (a_this, NULL) ; + + if (a_this->stryng && a_this->stryng->str) + return a_this->stryng->str ; + return NULL ; +} + +/** + *Returns the length of the internal raw NULL terminated + *string of the current instance of #CRString. + *@param a_this the current instance of #CRString. + *@return the len of the internal raw NULL termninated string, + *of -1 if no length can be returned. + */ +gint +cr_string_peek_raw_str_len (CRString const *a_this) +{ + g_return_val_if_fail (a_this && a_this->stryng, + -1) ; + return a_this->stryng->len ; +} + +/** + *@param a_this the #CRString to destroy. + */ +void +cr_string_destroy (CRString *a_this) +{ + g_return_if_fail (a_this) ; + + if (a_this->stryng) { + g_string_free (a_this->stryng, TRUE) ; + a_this->stryng = NULL ; + } + g_free (a_this) ; +} diff --git a/src/st/croco/cr-string.h b/src/st/croco/cr-string.h new file mode 100644 index 0000000..2700f0e --- /dev/null +++ b/src/st/croco/cr-string.h @@ -0,0 +1,76 @@ +/* -*- Mode: C; indent-tabs-mode:nil; c-basic-offset: 8-*- */ + +/* + * This file is part of The Croco Library + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of version 2.1 of the GNU Lesser General Public + * License as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 + * USA + * + * See COPYRIGHTS file for copyright information. + */ + +/** + *@file + *Declaration file of the #CRString class. + */ + +#ifndef __CR_STRING_H__ +#define __CR_STRING_H__ + +#include <glib.h> +#include "cr-utils.h" +#include "cr-parsing-location.h" + +G_BEGIN_DECLS + +typedef struct _CRString CRString ; + +/** + *This is a ship implementation of string based on GString. + *Actually, the aim of CRString is to store the parsing location + *(line,column,byte offset) at which a given string has been parsed + *in the input CSS. + *So this class has a gstring field of type GString that users can + *freely manipulate, and also a CRParginLocation type where the + *parsing location is store. If you don't want to deal with parsing + *location stuffs, then use GString instead. If we were in C++ for example, + *CRString would just inherit GString and just add accessors to + *the CRParsingLocation data ... but we are not and we still have + *to provide the parsing location information. + */ +struct _CRString { + /** + *The GString where all the string + *operation happen. + */ + GString *stryng ; + /** + *The parsing location storage area. + */ + CRParsingLocation location ; +} ; + +CRString * cr_string_new (void) ; + +CRString *cr_string_new_from_string (const gchar * a_string) ; +CRString * cr_string_new_from_gstring (GString const *a_string) ; +CRString *cr_string_dup (CRString const *a_this) ; +gchar *cr_string_dup2 (CRString const *a_this) ; +const gchar *cr_string_peek_raw_str (CRString const *a_this) ; +gint cr_string_peek_raw_str_len (CRString const *a_this) ; +void cr_string_destroy (CRString *a_this) ; + +G_END_DECLS + +#endif diff --git a/src/st/croco/cr-stylesheet.c b/src/st/croco/cr-stylesheet.c new file mode 100644 index 0000000..63e763f --- /dev/null +++ b/src/st/croco/cr-stylesheet.c @@ -0,0 +1,177 @@ +/* -*- Mode: C; indent-tabs-mode: nil; c-basic-offset: 8 -*- */ + +/* + * This file is part of The Croco Library + * + * Copyright (C) 2002-2004 Dodji Seketeli + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of version 2.1 of the GNU Lesser General Public + * License as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 + * USA + */ + +#include "string.h" +#include "cr-stylesheet.h" + +/** + *@file + *The definition of the #CRStyleSheet class + */ + +/** + *Constructor of the #CRStyleSheet class. + *@param the initial list of css statements. + *@return the newly built css2 stylesheet, or NULL in case of error. + */ +CRStyleSheet * +cr_stylesheet_new (CRStatement * a_stmts) +{ + CRStyleSheet *result; + + result = g_try_malloc (sizeof (CRStyleSheet)); + if (!result) { + cr_utils_trace_info ("Out of memory"); + return NULL; + } + + memset (result, 0, sizeof (CRStyleSheet)); + + if (a_stmts) + result->statements = a_stmts; + + return result; +} + +/** + *@param a_this the current instance of #CRStyleSheet + *@return the serialized stylesheet. + */ +gchar * +cr_stylesheet_to_string (CRStyleSheet const *a_this) +{ + gchar *str = NULL; + GString *stringue = NULL; + CRStatement const *cur_stmt = NULL; + + g_return_val_if_fail (a_this, NULL); + + if (a_this->statements) { + stringue = g_string_new (NULL) ; + g_return_val_if_fail (stringue, NULL) ; + } + for (cur_stmt = a_this->statements; + cur_stmt; cur_stmt = cur_stmt->next) { + if (cur_stmt->prev) { + g_string_append (stringue, "\n\n") ; + } + str = cr_statement_to_string (cur_stmt, 0) ; + if (str) { + g_string_append (stringue, str) ; + g_free (str) ; + str = NULL ; + } + } + if (stringue) { + str = g_string_free (stringue, FALSE) ; + stringue = NULL ; + } + return str ; +} + +/** + *Dumps the current css2 stylesheet to a file. + *@param a_this the current instance of #CRStyleSheet. + *@param a_fp the destination file + */ +void +cr_stylesheet_dump (CRStyleSheet const * a_this, FILE * a_fp) +{ + gchar *str = NULL ; + + g_return_if_fail (a_this); + + str = cr_stylesheet_to_string (a_this) ; + if (str) { + fprintf (a_fp, "%s", str) ; + g_free (str) ; + str = NULL ; + } +} + +/** + *Return the number of rules in the stylesheet. + *@param a_this the current instance of #CRStyleSheet. + *@return number of rules in the stylesheet. + */ +gint +cr_stylesheet_nr_rules (CRStyleSheet const * a_this) +{ + g_return_val_if_fail (a_this, -1); + + return cr_statement_nr_rules (a_this->statements); +} + +/** + *Use an index to get a CRStatement from the rules in a given stylesheet. + *@param a_this the current instance of #CRStatement. + *@param itemnr the index into the rules. + *@return CRStatement at position itemnr, if itemnr > number of rules - 1, + *it will return NULL. + */ +CRStatement * +cr_stylesheet_statement_get_from_list (CRStyleSheet * a_this, int itemnr) +{ + g_return_val_if_fail (a_this, NULL); + + return cr_statement_get_from_list (a_this->statements, itemnr); +} + +void +cr_stylesheet_ref (CRStyleSheet * a_this) +{ + g_return_if_fail (a_this); + + a_this->ref_count++; +} + +gboolean +cr_stylesheet_unref (CRStyleSheet * a_this) +{ + g_return_val_if_fail (a_this, FALSE); + + if (a_this->ref_count) + a_this->ref_count--; + + if (!a_this->ref_count) { + cr_stylesheet_destroy (a_this); + return TRUE; + } + + return FALSE; +} + +/** + *Destructor of the #CRStyleSheet class. + *@param a_this the current instance of the #CRStyleSheet class. + */ +void +cr_stylesheet_destroy (CRStyleSheet * a_this) +{ + g_return_if_fail (a_this); + + if (a_this->statements) { + cr_statement_destroy (a_this->statements); + a_this->statements = NULL; + } + g_free (a_this); +} diff --git a/src/st/croco/cr-stylesheet.h b/src/st/croco/cr-stylesheet.h new file mode 100644 index 0000000..2d6b4fa --- /dev/null +++ b/src/st/croco/cr-stylesheet.h @@ -0,0 +1,102 @@ +/* -*- Mode: C; indent-tabs-mode: nil; c-basic-offset: 8 -*- */ + +/* + * This file is part of The Croco Library + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of version 2.1 of the GNU Lesser General Public + * License as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 + * USA + * + * see COPYRIGHTS file for copyright information. + */ + + +#ifndef __CR_STYLESHEET_H__ +#define __CR_STYLESHEET_H__ + +#include "cr-utils.h" +#include "cr-statement.h" + +G_BEGIN_DECLS + +/** + *@file + *The declaration of the #CRStyleSheet class. + */ + + +enum CRStyleOrigin +{ + /*Please don't change the order of + *the values enumerated here ... + *New values should be added at the end, + *just before ORIGIN_END. + */ + ORIGIN_UA = 0, + ORIGIN_USER, + ORIGIN_AUTHOR, + + /*must always be the last one*/ + NB_ORIGINS +} ; + +/** + *An abstraction of a css stylesheet as defined + *by the css2 spec in chapter 4. + */ +struct _CRStyleSheet +{ + /**The css statements list*/ + CRStatement *statements ; + + enum CRStyleOrigin origin ; + + /*the parent import rule, if any.*/ + CRStatement *parent_import_rule ; + + /**custom data used by libcroco*/ + gpointer croco_data ; + + /** + *custom application data pointer + *Can be used by applications. + */ + gpointer app_data ; + + /** + *the reference count of this instance + *Please, don't never ever modify it + *directly. Use cr_stylesheet_ref() + *and cr_stylesheet_unref() instead. + */ + gulong ref_count ; +} ; + +CRStyleSheet * cr_stylesheet_new (CRStatement *a_stmts) ; + +gchar * cr_stylesheet_to_string (CRStyleSheet const *a_this) ; +void cr_stylesheet_dump (CRStyleSheet const *a_this, FILE *a_fp) ; + +gint cr_stylesheet_nr_rules (CRStyleSheet const *a_this) ; + +CRStatement * cr_stylesheet_statement_get_from_list (CRStyleSheet *a_this, int itemnr) ; + +void cr_stylesheet_ref (CRStyleSheet *a_this) ; + +gboolean cr_stylesheet_unref (CRStyleSheet *a_this) ; + +void cr_stylesheet_destroy (CRStyleSheet *a_this) ; + +G_END_DECLS + +#endif /*__CR_STYLESHEET_H__*/ diff --git a/src/st/croco/cr-term.c b/src/st/croco/cr-term.c new file mode 100644 index 0000000..b527d95 --- /dev/null +++ b/src/st/croco/cr-term.c @@ -0,0 +1,786 @@ +/* -*- Mode: C; indent-tabs-mode:nil; c-basic-offset: 8-*- */ + +/* + * This file is part of The Croco Library + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of version 2.1 of the GNU Lesser General Public + * License as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 + * USA + * + * Author: Dodji Seketeli + * See COPYRIGHTS file for copyright information. + */ + +#include <stdio.h> +#include <string.h> +#include "cr-term.h" +#include "cr-num.h" +#include "cr-parser.h" + +/** + *@file + *Definition of the #CRTem class. + */ + +static void +cr_term_clear (CRTerm * a_this) +{ + g_return_if_fail (a_this); + + switch (a_this->type) { + case TERM_NUMBER: + if (a_this->content.num) { + cr_num_destroy (a_this->content.num); + a_this->content.num = NULL; + } + break; + + case TERM_FUNCTION: + if (a_this->ext_content.func_param) { + cr_term_destroy (a_this->ext_content.func_param); + a_this->ext_content.func_param = NULL; + } + case TERM_STRING: + case TERM_IDENT: + case TERM_URI: + case TERM_HASH: + if (a_this->content.str) { + cr_string_destroy (a_this->content.str); + a_this->content.str = NULL; + } + break; + + case TERM_RGB: + if (a_this->content.rgb) { + cr_rgb_destroy (a_this->content.rgb); + a_this->content.rgb = NULL; + } + break; + + case TERM_UNICODERANGE: + case TERM_NO_TYPE: + default: + break; + } + + a_this->type = TERM_NO_TYPE; +} + +/** + *Instantiate a #CRTerm. + *@return the newly build instance + *of #CRTerm. + */ +CRTerm * +cr_term_new (void) +{ + CRTerm *result = NULL; + + result = g_try_malloc (sizeof (CRTerm)); + if (!result) { + cr_utils_trace_info ("Out of memory"); + return NULL; + } + memset (result, 0, sizeof (CRTerm)); + return result; +} + +/** + *Parses an expression as defined by the css2 spec + *and builds the expression as a list of terms. + *@param a_buf the buffer to parse. + *@return a pointer to the first term of the expression or + *NULL if parsing failed. + */ +CRTerm * +cr_term_parse_expression_from_buf (const guchar * a_buf, + enum CREncoding a_encoding) +{ + CRParser *parser = NULL; + CRTerm *result = NULL; + enum CRStatus status = CR_OK; + + g_return_val_if_fail (a_buf, NULL); + + parser = cr_parser_new_from_buf ((guchar*)a_buf, strlen ((const char *) a_buf), + a_encoding, FALSE); + g_return_val_if_fail (parser, NULL); + + status = cr_parser_try_to_skip_spaces_and_comments (parser); + if (status != CR_OK) { + goto cleanup; + } + status = cr_parser_parse_expr (parser, &result); + if (status != CR_OK) { + if (result) { + cr_term_destroy (result); + result = NULL; + } + } + + cleanup: + if (parser) { + cr_parser_destroy (parser); + parser = NULL; + } + + return result; +} + +enum CRStatus +cr_term_set_number (CRTerm * a_this, CRNum * a_num) +{ + g_return_val_if_fail (a_this, CR_BAD_PARAM_ERROR); + + cr_term_clear (a_this); + + a_this->type = TERM_NUMBER; + a_this->content.num = a_num; + return CR_OK; +} + +enum CRStatus +cr_term_set_function (CRTerm * a_this, CRString * a_func_name, + CRTerm * a_func_param) +{ + g_return_val_if_fail (a_this, CR_BAD_PARAM_ERROR); + + cr_term_clear (a_this); + + a_this->type = TERM_FUNCTION; + a_this->content.str = a_func_name; + a_this->ext_content.func_param = a_func_param; + return CR_OK; +} + +enum CRStatus +cr_term_set_string (CRTerm * a_this, CRString * a_str) +{ + g_return_val_if_fail (a_this, CR_BAD_PARAM_ERROR); + + cr_term_clear (a_this); + + a_this->type = TERM_STRING; + a_this->content.str = a_str; + return CR_OK; +} + +enum CRStatus +cr_term_set_ident (CRTerm * a_this, CRString * a_str) +{ + g_return_val_if_fail (a_this, CR_BAD_PARAM_ERROR); + + cr_term_clear (a_this); + + a_this->type = TERM_IDENT; + a_this->content.str = a_str; + return CR_OK; +} + +enum CRStatus +cr_term_set_uri (CRTerm * a_this, CRString * a_str) +{ + g_return_val_if_fail (a_this, CR_BAD_PARAM_ERROR); + + cr_term_clear (a_this); + + a_this->type = TERM_URI; + a_this->content.str = a_str; + return CR_OK; +} + +enum CRStatus +cr_term_set_rgb (CRTerm * a_this, CRRgb * a_rgb) +{ + g_return_val_if_fail (a_this, CR_BAD_PARAM_ERROR); + + cr_term_clear (a_this); + + a_this->type = TERM_RGB; + a_this->content.rgb = a_rgb; + return CR_OK; +} + +enum CRStatus +cr_term_set_hash (CRTerm * a_this, CRString * a_str) +{ + g_return_val_if_fail (a_this, CR_BAD_PARAM_ERROR); + + cr_term_clear (a_this); + + a_this->type = TERM_HASH; + a_this->content.str = a_str; + return CR_OK; +} + +/** + *Appends a new term to the current list of #CRTerm. + * + *@param a_this the "this pointer" of the current instance + *of #CRTerm . + *@param a_new_term the term to append. + *@return the list of terms with the a_new_term appended to it. + */ +CRTerm * +cr_term_append_term (CRTerm * a_this, CRTerm * a_new_term) +{ + CRTerm *cur = NULL; + + g_return_val_if_fail (a_new_term, NULL); + + if (a_this == NULL) + return a_new_term; + + for (cur = a_this; cur->next; cur = cur->next) ; + + cur->next = a_new_term; + a_new_term->prev = cur; + + return a_this; +} + +/** + *Prepends a term to the list of terms represented by a_this. + * + *@param a_this the "this pointer" of the current instance of + *#CRTerm . + *@param a_new_term the term to prepend. + *@return the head of the new list. + */ +CRTerm * +cr_term_prepend_term (CRTerm * a_this, CRTerm * a_new_term) +{ + g_return_val_if_fail (a_this && a_new_term, NULL); + + a_new_term->next = a_this; + a_this->prev = a_new_term; + + return a_new_term; +} + +/** + *Serializes the expression represented by + *the chained instances of #CRterm. + *@param a_this the current instance of #CRTerm + *@return the zero terminated string containing the serialized + *form of #CRTerm. MUST BE FREED BY THE CALLER using g_free(). + */ +guchar * +cr_term_to_string (CRTerm const * a_this) +{ + GString *str_buf = NULL; + CRTerm const *cur = NULL; + guchar *result = NULL, + *content = NULL; + + g_return_val_if_fail (a_this, NULL); + + str_buf = g_string_new (NULL); + g_return_val_if_fail (str_buf, NULL); + + for (cur = a_this; cur; cur = cur->next) { + if ((cur->content.str == NULL) + && (cur->content.num == NULL) + && (cur->content.rgb == NULL)) + continue; + + switch (cur->the_operator) { + case DIVIDE: + g_string_append (str_buf, " / "); + break; + + case COMMA: + g_string_append (str_buf, ", "); + break; + + case NO_OP: + if (cur->prev) { + g_string_append (str_buf, " "); + } + break; + default: + + break; + } + + switch (cur->unary_op) { + case PLUS_UOP: + g_string_append (str_buf, "+"); + break; + + case MINUS_UOP: + g_string_append (str_buf, "-"); + break; + + default: + break; + } + + switch (cur->type) { + case TERM_NUMBER: + if (cur->content.num) { + content = cr_num_to_string (cur->content.num); + } + + if (content) { + g_string_append (str_buf, (const gchar *) content); + g_free (content); + content = NULL; + } + + break; + + case TERM_FUNCTION: + if (cur->content.str) { + content = (guchar *) g_strndup + (cur->content.str->stryng->str, + cur->content.str->stryng->len); + } + + if (content) { + g_string_append_printf (str_buf, "%s(", + content); + + if (cur->ext_content.func_param) { + guchar *tmp_str = NULL; + + tmp_str = cr_term_to_string + (cur-> + ext_content.func_param); + + if (tmp_str) { + g_string_append (str_buf, + (const gchar *) tmp_str); + g_free (tmp_str); + tmp_str = NULL; + } + } + g_string_append (str_buf, ")"); + g_free (content); + content = NULL; + } + + break; + + case TERM_STRING: + if (cur->content.str) { + content = (guchar *) g_strndup + (cur->content.str->stryng->str, + cur->content.str->stryng->len); + } + + if (content) { + g_string_append_printf (str_buf, + "\"%s\"", content); + g_free (content); + content = NULL; + } + break; + + case TERM_IDENT: + if (cur->content.str) { + content = (guchar *) g_strndup + (cur->content.str->stryng->str, + cur->content.str->stryng->len); + } + + if (content) { + g_string_append (str_buf, (const gchar *) content); + g_free (content); + content = NULL; + } + break; + + case TERM_URI: + if (cur->content.str) { + content = (guchar *) g_strndup + (cur->content.str->stryng->str, + cur->content.str->stryng->len); + } + + if (content) { + g_string_append_printf + (str_buf, "url(%s)", content); + g_free (content); + content = NULL; + } + break; + + case TERM_RGB: + if (cur->content.rgb) { + guchar *tmp_str = NULL; + + g_string_append (str_buf, "rgb("); + tmp_str = cr_rgb_to_string (cur->content.rgb); + + if (tmp_str) { + g_string_append (str_buf, (const gchar *) tmp_str); + g_free (tmp_str); + tmp_str = NULL; + } + g_string_append (str_buf, ")"); + } + + break; + + case TERM_UNICODERANGE: + g_string_append + (str_buf, + "?found unicoderange: dump not supported yet?"); + break; + + case TERM_HASH: + if (cur->content.str) { + content = (guchar *) g_strndup + (cur->content.str->stryng->str, + cur->content.str->stryng->len); + } + + if (content) { + g_string_append_printf (str_buf, + "#%s", content); + g_free (content); + content = NULL; + } + break; + + default: + g_string_append (str_buf, + "Unrecognized Term type"); + break; + } + } + + if (str_buf) { + result = (guchar *) g_string_free (str_buf, FALSE); + str_buf = NULL; + } + + return result; +} + +guchar * +cr_term_one_to_string (CRTerm const * a_this) +{ + GString *str_buf = NULL; + guchar *result = NULL, + *content = NULL; + + g_return_val_if_fail (a_this, NULL); + + str_buf = g_string_new (NULL); + g_return_val_if_fail (str_buf, NULL); + + if ((a_this->content.str == NULL) + && (a_this->content.num == NULL) + && (a_this->content.rgb == NULL)) + return NULL ; + + switch (a_this->the_operator) { + case DIVIDE: + g_string_append_printf (str_buf, " / "); + break; + + case COMMA: + g_string_append_printf (str_buf, ", "); + break; + + case NO_OP: + if (a_this->prev) { + g_string_append_printf (str_buf, " "); + } + break; + default: + + break; + } + + switch (a_this->unary_op) { + case PLUS_UOP: + g_string_append_printf (str_buf, "+"); + break; + + case MINUS_UOP: + g_string_append_printf (str_buf, "-"); + break; + + default: + break; + } + + switch (a_this->type) { + case TERM_NUMBER: + if (a_this->content.num) { + content = cr_num_to_string (a_this->content.num); + } + + if (content) { + g_string_append (str_buf, (const gchar *) content); + g_free (content); + content = NULL; + } + + break; + + case TERM_FUNCTION: + if (a_this->content.str) { + content = (guchar *) g_strndup + (a_this->content.str->stryng->str, + a_this->content.str->stryng->len); + } + + if (content) { + g_string_append_printf (str_buf, "%s(", + content); + + if (a_this->ext_content.func_param) { + guchar *tmp_str = NULL; + + tmp_str = cr_term_to_string + (a_this-> + ext_content.func_param); + + if (tmp_str) { + g_string_append_printf + (str_buf, + "%s", tmp_str); + g_free (tmp_str); + tmp_str = NULL; + } + + g_string_append_printf (str_buf, ")"); + g_free (content); + content = NULL; + } + } + + break; + + case TERM_STRING: + if (a_this->content.str) { + content = (guchar *) g_strndup + (a_this->content.str->stryng->str, + a_this->content.str->stryng->len); + } + + if (content) { + g_string_append_printf (str_buf, + "\"%s\"", content); + g_free (content); + content = NULL; + } + break; + + case TERM_IDENT: + if (a_this->content.str) { + content = (guchar *) g_strndup + (a_this->content.str->stryng->str, + a_this->content.str->stryng->len); + } + + if (content) { + g_string_append (str_buf, (const gchar *) content); + g_free (content); + content = NULL; + } + break; + + case TERM_URI: + if (a_this->content.str) { + content = (guchar *) g_strndup + (a_this->content.str->stryng->str, + a_this->content.str->stryng->len); + } + + if (content) { + g_string_append_printf + (str_buf, "url(%s)", content); + g_free (content); + content = NULL; + } + break; + + case TERM_RGB: + if (a_this->content.rgb) { + guchar *tmp_str = NULL; + + g_string_append_printf (str_buf, "rgb("); + tmp_str = cr_rgb_to_string (a_this->content.rgb); + + if (tmp_str) { + g_string_append (str_buf, (const gchar *) tmp_str); + g_free (tmp_str); + tmp_str = NULL; + } + g_string_append_printf (str_buf, ")"); + } + + break; + + case TERM_UNICODERANGE: + g_string_append_printf + (str_buf, + "?found unicoderange: dump not supported yet?"); + break; + + case TERM_HASH: + if (a_this->content.str) { + content = (guchar *) g_strndup + (a_this->content.str->stryng->str, + a_this->content.str->stryng->len); + } + + if (content) { + g_string_append_printf (str_buf, + "#%s", content); + g_free (content); + content = NULL; + } + break; + + default: + g_string_append_printf (str_buf, + "%s", + "Unrecognized Term type"); + break; + } + + if (str_buf) { + result = (guchar *) g_string_free (str_buf, FALSE); + str_buf = NULL; + } + + return result; +} + +/** + *Dumps the expression (a list of terms connected by operators) + *to a file. + *TODO: finish the dump. The dump of some type of terms have not yet been + *implemented. + *@param a_this the current instance of #CRTerm. + *@param a_fp the destination file pointer. + */ +void +cr_term_dump (CRTerm const * a_this, FILE * a_fp) +{ + guchar *content = NULL; + + g_return_if_fail (a_this); + + content = cr_term_to_string (a_this); + + if (content) { + fprintf (a_fp, "%s", content); + g_free (content); + } +} + +/** + *Return the number of terms in the expression. + *@param a_this the current instance of #CRTerm. + *@return number of terms in the expression. + */ +int +cr_term_nr_values (CRTerm const *a_this) +{ + CRTerm const *cur = NULL ; + int nr = 0; + + g_return_val_if_fail (a_this, -1) ; + + for (cur = a_this ; cur ; cur = cur->next) + nr ++; + return nr; +} + +/** + *Use an index to get a CRTerm from the expression. + *@param a_this the current instance of #CRTerm. + *@param itemnr the index into the expression. + *@return CRTerm at position itemnr, if itemnr > number of terms - 1, + *it will return NULL. + */ +CRTerm * +cr_term_get_from_list (CRTerm *a_this, int itemnr) +{ + CRTerm *cur = NULL ; + int nr = 0; + + g_return_val_if_fail (a_this, NULL) ; + + for (cur = a_this ; cur ; cur = cur->next) + if (nr++ == itemnr) + return cur; + return NULL; +} + +/** + *Increments the reference counter of the current instance + *of #CRTerm.* + *@param a_this the current instance of #CRTerm. + */ +void +cr_term_ref (CRTerm * a_this) +{ + g_return_if_fail (a_this); + + a_this->ref_count++; +} + +/** + *Decrements the ref count of the current instance of + *#CRTerm. If the ref count reaches zero, the instance is + *destroyed. + *@param a_this the current instance of #CRTerm. + *@return TRUE if the current instance has been destroyed, FALSE otherwise. + */ +gboolean +cr_term_unref (CRTerm * a_this) +{ + g_return_val_if_fail (a_this, FALSE); + + if (a_this->ref_count) { + a_this->ref_count--; + } + + if (a_this->ref_count == 0) { + cr_term_destroy (a_this); + return TRUE; + } + + return FALSE; +} + +/** + *The destructor of the the #CRTerm class. + *@param a_this the "this pointer" of the current instance + *of #CRTerm. + */ +void +cr_term_destroy (CRTerm * a_this) +{ + g_return_if_fail (a_this); + + cr_term_clear (a_this); + + if (a_this->next) { + cr_term_destroy (a_this->next); + a_this->next = NULL; + } + + if (a_this) { + g_free (a_this); + } + +} diff --git a/src/st/croco/cr-term.h b/src/st/croco/cr-term.h new file mode 100644 index 0000000..0f22dda --- /dev/null +++ b/src/st/croco/cr-term.h @@ -0,0 +1,190 @@ +/* -*- Mode: C; indent-tabs-mode:nil; c-basic-offset: 8-*- */ + +/* + * This file is part of The Croco Library + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of version 2.1 of the GNU Lesser General Public + * License as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 + * USA + * + * Author: Dodji Seketeli + * See COPYRIGHTS file for copyright information. + */ + +#include <stdio.h> +#include <glib.h> +#include "cr-utils.h" +#include "cr-rgb.h" +#include "cr-num.h" +#include "cr-string.h" + +#ifndef __CR_TERM_H__ +#define __CR_TERM_H__ + +G_BEGIN_DECLS + +/** + *@file + *Declaration of the #CRTem class. + */ + +enum CRTermType +{ + TERM_NO_TYPE = 0, + TERM_NUMBER, + TERM_FUNCTION, + TERM_STRING, + TERM_IDENT, + TERM_URI, + TERM_RGB, + TERM_UNICODERANGE, + TERM_HASH +} ; + + +enum UnaryOperator +{ + NO_UNARY_UOP = 0, + PLUS_UOP, + MINUS_UOP, + EMPTY_UNARY_UOP +} ; + +enum Operator +{ + NO_OP = 0, + DIVIDE, + COMMA +} ; + +struct _CRTerm ; +typedef struct _CRTerm CRTerm ; + +/** + *An abstraction of a css2 term as + *defined in the CSS2 spec in appendix D.1: + *term ::= + *[ NUMBER S* | PERCENTAGE S* | LENGTH S* | EMS S* | EXS S* + *| ANGLE S* | TIME S* | FREQ S* | function ] + * | STRING S* | IDENT S* | URI S* | RGB S* + *| UNICODERANGE S* | hexcolor + */ +struct _CRTerm +{ + /** + *The type of the term. + */ + enum CRTermType type ; + + /** + *The unary operator associated to + *the current term. + */ + enum UnaryOperator unary_op ; + + /** + *The operator associated to the current term. + */ + enum Operator the_operator ; + + + /** + *The content of the term. + *Depending of the type of the term, + *this holds either a number, a percentage ... + */ + union + { + CRNum *num ; + CRString * str ; + CRRgb * rgb ; + } content ; + + /** + *If the term is of type UNICODERANGE, + *this field holds the upper bound of the range. + *if the term is of type FUNCTION, this holds + *an instance of CRTerm that represents + * the expression which is the argument of the function. + */ + union + { + CRTerm *func_param ; + } ext_content ; + + /** + *A spare pointer, just in case. + *Can be used by the application. + */ + gpointer app_data ; + + glong ref_count ; + + /** + *A pointer to the next term, + *just in case this term is part of + *an expression. + */ + CRTerm *next ; + + /** + *A pointer to the previous + *term. + */ + CRTerm *prev ; + CRParsingLocation location ; +} ; + +CRTerm * cr_term_parse_expression_from_buf (const guchar *a_buf, + enum CREncoding a_encoding) ; +CRTerm * cr_term_new (void) ; + +enum CRStatus cr_term_set_number (CRTerm *a_this, CRNum *a_num) ; + +enum CRStatus cr_term_set_function (CRTerm *a_this, + CRString *a_func_name, + CRTerm *a_func_param) ; + +enum CRStatus cr_term_set_string (CRTerm *a_this, CRString *a_str) ; + +enum CRStatus cr_term_set_ident (CRTerm *a_this, CRString *a_str) ; + +enum CRStatus cr_term_set_uri (CRTerm *a_this, CRString *a_str) ; + +enum CRStatus cr_term_set_rgb (CRTerm *a_this, CRRgb *a_rgb) ; + +enum CRStatus cr_term_set_hash (CRTerm *a_this, CRString *a_str) ; + +CRTerm * cr_term_append_term (CRTerm *a_this, CRTerm *a_new_term) ; + +CRTerm * cr_term_prepend_term (CRTerm *a_this, CRTerm *a_new_term) ; + +guchar * cr_term_to_string (CRTerm const *a_this) ; + +guchar * cr_term_one_to_string (CRTerm const * a_this) ; + +void cr_term_dump (CRTerm const *a_this, FILE *a_fp) ; + +int cr_term_nr_values (CRTerm const *a_this) ; + +CRTerm * cr_term_get_from_list (CRTerm *a_this, int itemnr) ; + +void cr_term_ref (CRTerm *a_this) ; + +gboolean cr_term_unref (CRTerm *a_this) ; + +void cr_term_destroy (CRTerm * a_term) ; + +G_END_DECLS + +#endif /*__CR_TERM_H__*/ diff --git a/src/st/croco/cr-tknzr.c b/src/st/croco/cr-tknzr.c new file mode 100644 index 0000000..54f18f2 --- /dev/null +++ b/src/st/croco/cr-tknzr.c @@ -0,0 +1,2762 @@ +/* -*- Mode: C; indent-tabs-mode:nil; c-basic-offset: 8-*- */ + +/* + * This file is part of The Croco Library + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of version 2.1 of the GNU Lesser General Public + * License as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 + * USA + * + * Author: Dodji Seketeli + * See the COPYRIGHTS file for copyrights information. + */ + +/** + *@file + *The definition of the #CRTknzr (tokenizer) + *class. + */ + +#include "string.h" +#include "cr-tknzr.h" +#include "cr-doc-handler.h" + +struct _CRTknzrPriv { + /**The parser input stream of bytes*/ + CRInput *input; + + /** + *A cache where tknzr_unget_token() + *puts back the token. tknzr_get_next_token() + *first look in this cache, and if and + *only if it's empty, fetches the next token + *from the input stream. + */ + CRToken *token_cache; + + /** + *The position of the end of the previous token + *or char fetched. + */ + CRInputPos prev_pos; + + CRDocHandler *sac_handler; + + /** + *The reference count of the current instance + *of #CRTknzr. Is manipulated by cr_tknzr_ref() + *and cr_tknzr_unref(). + */ + glong ref_count; +}; + +#define PRIVATE(obj) ((obj)->priv) + +/** + *return TRUE if the character is a number ([0-9]), FALSE otherwise + *@param a_char the char to test. + */ +#define IS_NUM(a_char) (((a_char) >= '0' && (a_char) <= '9')?TRUE:FALSE) + +/** + *Checks if 'status' equals CR_OK. If not, goto the 'error' label. + * + *@param status the status (of type enum CRStatus) to test. + *@param is_exception if set to FALSE, the final status returned the + *current function will be CR_PARSING_ERROR. If set to TRUE, the + *current status will be the current value of the 'status' variable. + * + */ +#define CHECK_PARSING_STATUS(status, is_exception) \ +if ((status) != CR_OK) \ +{ \ + if (is_exception == FALSE) \ + { \ + status = CR_PARSING_ERROR ; \ + } \ + goto error ; \ +} + +/** + *Peeks the next char from the input stream of the current tokenizer. + *invokes CHECK_PARSING_STATUS on the status returned by + *cr_tknzr_input_peek_char(). + * + *@param the current instance of #CRTkzr. + *@param to_char a pointer to the char where to store the + *char peeked. + */ +#define PEEK_NEXT_CHAR(a_tknzr, a_to_char) \ +{\ +status = cr_tknzr_peek_char (a_tknzr, a_to_char) ; \ +CHECK_PARSING_STATUS (status, TRUE) \ +} + +/** + *Reads the next char from the input stream of the current parser. + *In case of error, jumps to the "error:" label located in the + *function where this macro is called. + *@param parser the current instance of #CRTknzr + *@param to_char a pointer to the guint32 char where to store + *the character read. + */ +#define READ_NEXT_CHAR(a_tknzr, to_char) \ +status = cr_tknzr_read_char (a_tknzr, to_char) ;\ +CHECK_PARSING_STATUS (status, TRUE) + +/** + *Gets information about the current position in + *the input of the parser. + *In case of failure, this macro returns from the + *calling function and + *returns a status code of type enum #CRStatus. + *@param parser the current instance of #CRTknzr. + *@param pos out parameter. A pointer to the position + *inside the current parser input. Must + */ +#define RECORD_INITIAL_POS(a_tknzr, a_pos) \ +status = cr_input_get_cur_pos (PRIVATE \ +(a_tknzr)->input, a_pos) ; \ +g_return_val_if_fail (status == CR_OK, status) + +/** + *Gets the address of the current byte inside the + *parser input. + *@param parser the current instance of #CRTknzr. + *@param addr out parameter a pointer (guchar*) + *to where the address must be put. + */ +#define RECORD_CUR_BYTE_ADDR(a_tknzr, a_addr) \ +status = cr_input_get_cur_byte_addr \ + (PRIVATE (a_tknzr)->input, a_addr) ; \ +CHECK_PARSING_STATUS (status, TRUE) + +/** + *Peeks a byte from the topmost parser input at + *a given offset from the current position. + *If it fails, goto the "error:" label. + * + *@param a_parser the current instance of #CRTknzr. + *@param a_offset the offset of the byte to peek, the + *current byte having the offset '0'. + *@param a_byte_ptr out parameter a pointer (guchar*) to + *where the peeked char is to be stored. + */ +#define PEEK_BYTE(a_tknzr, a_offset, a_byte_ptr) \ +status = cr_tknzr_peek_byte (a_tknzr, \ + a_offset, \ + a_byte_ptr) ; \ +CHECK_PARSING_STATUS (status, TRUE) ; + +#define BYTE(a_input, a_n, a_eof) \ +cr_input_peek_byte2 (a_input, a_n, a_eof) + +/** + *Reads a byte from the topmost parser input + *steam. + *If it fails, goto the "error" label. + *@param a_parser the current instance of #CRTknzr. + *@param a_byte_ptr the guchar * where to put the read char. + */ +#define READ_NEXT_BYTE(a_tknzr, a_byte_ptr) \ +status = \ +cr_input_read_byte (PRIVATE (a_tknzr)->input, a_byte_ptr) ;\ +CHECK_PARSING_STATUS (status, TRUE) ; + +/** + *Skips a given number of byte in the topmost + *parser input. Don't update line and column number. + *In case of error, jumps to the "error:" label + *of the surrounding function. + *@param a_parser the current instance of #CRTknzr. + *@param a_nb_bytes the number of bytes to skip. + */ +#define SKIP_BYTES(a_tknzr, a_nb_bytes) \ +status = cr_input_seek_index (PRIVATE (a_tknzr)->input, \ + CR_SEEK_CUR, a_nb_bytes) ; \ +CHECK_PARSING_STATUS (status, TRUE) ; + +/** + *Skip utf8 encoded characters. + *Updates line and column numbers. + *@param a_parser the current instance of #CRTknzr. + *@param a_nb_chars the number of chars to skip. Must be of + *type glong. + */ +#define SKIP_CHARS(a_tknzr, a_nb_chars) \ +{ \ +gulong nb_chars = a_nb_chars ; \ +status = cr_input_consume_chars \ + (PRIVATE (a_tknzr)->input,0, &nb_chars) ; \ +CHECK_PARSING_STATUS (status, TRUE) ; \ +} + +/** + *Tests the condition and if it is false, sets + *status to "CR_PARSING_ERROR" and goto the 'error' + *label. + *@param condition the condition to test. + */ +#define ENSURE_PARSING_COND(condition) \ +if (! (condition)) {status = CR_PARSING_ERROR; goto error ;} + +static enum CRStatus cr_tknzr_parse_nl (CRTknzr * a_this, + guchar ** a_start, + guchar ** a_end, + CRParsingLocation *a_location); + +static enum CRStatus cr_tknzr_parse_w (CRTknzr * a_this, + guchar ** a_start, + guchar ** a_end, + CRParsingLocation *a_location) ; + +static enum CRStatus cr_tknzr_parse_unicode_escape (CRTknzr * a_this, + guint32 * a_unicode, + CRParsingLocation *a_location) ; + +static enum CRStatus cr_tknzr_parse_escape (CRTknzr * a_this, + guint32 * a_esc_code, + CRParsingLocation *a_location); + +static enum CRStatus cr_tknzr_parse_string (CRTknzr * a_this, + CRString ** a_str); + +static enum CRStatus cr_tknzr_parse_comment (CRTknzr * a_this, + CRString ** a_comment); + +static enum CRStatus cr_tknzr_parse_nmstart (CRTknzr * a_this, + guint32 * a_char, + CRParsingLocation *a_location); + +static enum CRStatus cr_tknzr_parse_num (CRTknzr * a_this, + CRNum ** a_num); + +/********************************** + *PRIVATE methods + **********************************/ + +/** + *Parses a "w" as defined by the css spec at [4.1.1]: + * w ::= [ \t\r\n\f]* + * + *@param a_this the current instance of #CRTknzr. + *@param a_start out param. Upon successful completion, points + *to the beginning of the parsed white space, points to NULL otherwise. + *Can also point to NULL is there is no white space actually. + *@param a_end out param. Upon successful completion, points + *to the end of the parsed white space, points to NULL otherwise. + *Can also point to NULL is there is no white space actually. + */ +static enum CRStatus +cr_tknzr_parse_w (CRTknzr * a_this, + guchar ** a_start, + guchar ** a_end, + CRParsingLocation *a_location) +{ + guint32 cur_char = 0; + CRInputPos init_pos; + enum CRStatus status = CR_OK; + + g_return_val_if_fail (a_this && PRIVATE (a_this) + && PRIVATE (a_this)->input + && a_start && a_end, + CR_BAD_PARAM_ERROR); + + RECORD_INITIAL_POS (a_this, &init_pos); + + *a_start = NULL; + *a_end = NULL; + + READ_NEXT_CHAR (a_this, &cur_char); + + if (cr_utils_is_white_space (cur_char) == FALSE) { + status = CR_PARSING_ERROR; + goto error; + } + if (a_location) { + cr_tknzr_get_parsing_location (a_this, + a_location) ; + } + RECORD_CUR_BYTE_ADDR (a_this, a_start); + *a_end = *a_start; + + for (;;) { + gboolean is_eof = FALSE; + + cr_input_get_end_of_file (PRIVATE (a_this)->input, &is_eof); + if (is_eof) + break; + + status = cr_tknzr_peek_char (a_this, &cur_char); + if (status == CR_END_OF_INPUT_ERROR) { + break; + } else if (status != CR_OK) { + goto error; + } + + if (cr_utils_is_white_space (cur_char) == TRUE) { + READ_NEXT_CHAR (a_this, &cur_char); + RECORD_CUR_BYTE_ADDR (a_this, a_end); + } else { + break; + } + } + + return CR_OK; + + error: + cr_tknzr_set_cur_pos (a_this, &init_pos); + + return status; +} + +/** + *Parses a newline as defined in the css2 spec: + * nl ::= \n|\r\n|\r|\f + * + *@param a_this the "this pointer" of the current instance of #CRTknzr. + *@param a_start a pointer to the first character of the successfully + *parsed string. + *@param a_end a pointer to the last character of the successfully parsed + *string. + *@result CR_OK upon successful completion, an error code otherwise. + */ +static enum CRStatus +cr_tknzr_parse_nl (CRTknzr * a_this, + guchar ** a_start, + guchar ** a_end, + CRParsingLocation *a_location) +{ + CRInputPos init_pos; + guchar next_chars[2] = { 0 }; + enum CRStatus status = CR_PARSING_ERROR; + + g_return_val_if_fail (a_this && PRIVATE (a_this) + && a_start && a_end, CR_BAD_PARAM_ERROR); + + RECORD_INITIAL_POS (a_this, &init_pos); + + PEEK_BYTE (a_this, 1, &next_chars[0]); + PEEK_BYTE (a_this, 2, &next_chars[1]); + + if ((next_chars[0] == '\r' && next_chars[1] == '\n')) { + SKIP_BYTES (a_this, 1); + if (a_location) { + cr_tknzr_get_parsing_location + (a_this, a_location) ; + } + SKIP_CHARS (a_this, 1); + + RECORD_CUR_BYTE_ADDR (a_this, a_end); + + status = CR_OK; + } else if (next_chars[0] == '\n' + || next_chars[0] == '\r' || next_chars[0] == '\f') { + SKIP_CHARS (a_this, 1); + if (a_location) { + cr_tknzr_get_parsing_location + (a_this, a_location) ; + } + RECORD_CUR_BYTE_ADDR (a_this, a_start); + *a_end = *a_start; + status = CR_OK; + } else { + status = CR_PARSING_ERROR; + goto error; + } + return CR_OK ; + + error: + cr_tknzr_set_cur_pos (a_this, &init_pos) ; + return status; +} + +/** + *Go ahead in the parser input, skipping all the spaces. + *If the next char if not a white space, this function does nothing. + *In any cases, it stops when it encounters a non white space character. + * + *@param a_this the current instance of #CRTknzr. + *@return CR_OK upon successful completion, an error code otherwise. + */ +static enum CRStatus +cr_tknzr_try_to_skip_spaces (CRTknzr * a_this) +{ + enum CRStatus status = CR_ERROR; + guint32 cur_char = 0; + + g_return_val_if_fail (a_this && PRIVATE (a_this) + && PRIVATE (a_this)->input, CR_BAD_PARAM_ERROR); + + status = cr_input_peek_char (PRIVATE (a_this)->input, &cur_char); + + if (status != CR_OK) { + if (status == CR_END_OF_INPUT_ERROR) + return CR_OK; + return status; + } + + if (cr_utils_is_white_space (cur_char) == TRUE) { + gulong nb_chars = -1; /*consume all spaces */ + + status = cr_input_consume_white_spaces + (PRIVATE (a_this)->input, &nb_chars); + } + + return status; +} + +/** + *Parses a "comment" as defined in the css spec at [4.1.1]: + *COMMENT ::= \/\*[^*]*\*+([^/][^*]*\*+)*\/ . + *This complex regexp is just to say that comments start + *with the two chars '/''*' and ends with the two chars '*''/'. + *It also means that comments cannot be nested. + *So based on that, I've just tried to implement the parsing function + *simply and in a straight forward manner. + */ +static enum CRStatus +cr_tknzr_parse_comment (CRTknzr * a_this, + CRString ** a_comment) +{ + enum CRStatus status = CR_OK; + CRInputPos init_pos; + guint32 cur_char = 0, next_char= 0; + CRString *comment = NULL; + CRParsingLocation loc = {0} ; + + g_return_val_if_fail (a_this && PRIVATE (a_this) + && PRIVATE (a_this)->input, + CR_BAD_PARAM_ERROR); + + RECORD_INITIAL_POS (a_this, &init_pos); + READ_NEXT_CHAR (a_this, &cur_char) ; + ENSURE_PARSING_COND (cur_char == '/'); + cr_tknzr_get_parsing_location (a_this, &loc) ; + + READ_NEXT_CHAR (a_this, &cur_char); + ENSURE_PARSING_COND (cur_char == '*'); + comment = cr_string_new (); + for (;;) { /* [^*]* */ + PEEK_NEXT_CHAR (a_this, &next_char); + if (next_char == '*') + break; + READ_NEXT_CHAR (a_this, &cur_char); + g_string_append_unichar (comment->stryng, cur_char); + } + /* Stop condition: next_char == '*' */ + for (;;) { /* \*+ */ + READ_NEXT_CHAR(a_this, &cur_char); + ENSURE_PARSING_COND (cur_char == '*'); + g_string_append_unichar (comment->stryng, cur_char); + PEEK_NEXT_CHAR (a_this, &next_char); + if (next_char != '*') + break; + } + /* Stop condition: next_char != '*' */ + for (;;) { /* ([^/][^*]*\*+)* */ + if (next_char == '/') + break; + READ_NEXT_CHAR(a_this, &cur_char); + g_string_append_unichar (comment->stryng, cur_char); + for (;;) { /* [^*]* */ + PEEK_NEXT_CHAR (a_this, &next_char); + if (next_char == '*') + break; + READ_NEXT_CHAR (a_this, &cur_char); + g_string_append_unichar (comment->stryng, cur_char); + } + /* Stop condition: next_char = '*', no need to verify, because peek and read exit to error anyway */ + for (;;) { /* \*+ */ + READ_NEXT_CHAR(a_this, &cur_char); + ENSURE_PARSING_COND (cur_char == '*'); + g_string_append_unichar (comment->stryng, cur_char); + PEEK_NEXT_CHAR (a_this, &next_char); + if (next_char != '*') + break; + } + /* Continue condition: next_char != '*' */ + } + /* Stop condition: next_char == '\/' */ + READ_NEXT_CHAR(a_this, &cur_char); + g_string_append_unichar (comment->stryng, cur_char); + + if (status == CR_OK) { + cr_parsing_location_copy (&comment->location, + &loc) ; + *a_comment = comment; + return CR_OK; + } + error: + + if (comment) { + cr_string_destroy (comment); + comment = NULL; + } + + cr_tknzr_set_cur_pos (a_this, &init_pos); + + return status; +} + +/** + *Parses an 'unicode' escape sequence defined + *in css spec at chap 4.1.1: + *unicode ::= \\[0-9a-f]{1,6}[ \n\r\t\f]? + *@param a_this the current instance of #CRTknzr. + *@param a_start out parameter. A pointer to the start + *of the unicode escape sequence. Must *NOT* be deleted by + *the caller. + *@param a_end out parameter. A pointer to the last character + *of the unicode escape sequence. Must *NOT* be deleted by the caller. + *@return CR_OK if parsing succeeded, an error code otherwise. + *Error code can be either CR_PARSING_ERROR if the string + *parsed just doesn't + *respect the production or another error if a + *lower level error occurred. + */ +static enum CRStatus +cr_tknzr_parse_unicode_escape (CRTknzr * a_this, + guint32 * a_unicode, + CRParsingLocation *a_location) +{ + guint32 cur_char; + CRInputPos init_pos; + glong occur = 0; + guint32 unicode = 0; + guchar *tmp_char_ptr1 = NULL, + *tmp_char_ptr2 = NULL; + enum CRStatus status = CR_OK; + + g_return_val_if_fail (a_this && PRIVATE (a_this) + && a_unicode, CR_BAD_PARAM_ERROR); + + /*first, let's backup the current position pointer */ + RECORD_INITIAL_POS (a_this, &init_pos); + + READ_NEXT_CHAR (a_this, &cur_char); + + if (cur_char != '\\') { + status = CR_PARSING_ERROR; + goto error; + } + if (a_location) { + cr_tknzr_get_parsing_location + (a_this, a_location) ; + } + PEEK_NEXT_CHAR (a_this, &cur_char); + + for (occur = 0, unicode = 0; ((cur_char >= '0' && cur_char <= '9') + || (cur_char >= 'a' && cur_char <= 'f') + || (cur_char >= 'A' && cur_char <= 'F')) + && occur < 6; occur++) { + gint cur_char_val = 0; + + READ_NEXT_CHAR (a_this, &cur_char); + + if ((cur_char >= '0' && cur_char <= '9')) { + cur_char_val = (cur_char - '0'); + } else if ((cur_char >= 'a' && cur_char <= 'f')) { + cur_char_val = 10 + (cur_char - 'a'); + } else if ((cur_char >= 'A' && cur_char <= 'F')) { + cur_char_val = 10 + (cur_char - 'A'); + } + + unicode = unicode * 16 + cur_char_val; + + PEEK_NEXT_CHAR (a_this, &cur_char); + } + + /* Eat a whitespace if possible. */ + cr_tknzr_parse_w (a_this, &tmp_char_ptr1, + &tmp_char_ptr2, NULL); + *a_unicode = unicode; + return CR_OK; + + error: + /* + *restore the initial position pointer backuped at + *the beginning of this function. + */ + cr_tknzr_set_cur_pos (a_this, &init_pos); + + return status; +} + +/** + *parses an escape sequence as defined by the css spec: + *escape ::= {unicode}|\\[ -~\200-\4177777] + *@param a_this the current instance of #CRTknzr . + */ +static enum CRStatus +cr_tknzr_parse_escape (CRTknzr * a_this, guint32 * a_esc_code, + CRParsingLocation *a_location) +{ + enum CRStatus status = CR_OK; + guint32 cur_char = 0; + CRInputPos init_pos; + guchar next_chars[2]; + + g_return_val_if_fail (a_this && PRIVATE (a_this) + && a_esc_code, CR_BAD_PARAM_ERROR); + + RECORD_INITIAL_POS (a_this, &init_pos); + + PEEK_BYTE (a_this, 1, &next_chars[0]); + PEEK_BYTE (a_this, 2, &next_chars[1]); + + if (next_chars[0] != '\\') { + status = CR_PARSING_ERROR; + goto error; + } + + if ((next_chars[1] >= '0' && next_chars[1] <= '9') + || (next_chars[1] >= 'a' && next_chars[1] <= 'f') + || (next_chars[1] >= 'A' && next_chars[1] <= 'F')) { + status = cr_tknzr_parse_unicode_escape (a_this, a_esc_code, + a_location); + } else { + /*consume the '\' char */ + READ_NEXT_CHAR (a_this, &cur_char); + if (a_location) { + cr_tknzr_get_parsing_location (a_this, + a_location) ; + } + /*then read the char after the '\' */ + READ_NEXT_CHAR (a_this, &cur_char); + + if (cur_char != ' ' && (cur_char < 200 || cur_char > 4177777)) { + status = CR_PARSING_ERROR; + goto error; + } + *a_esc_code = cur_char; + + } + if (status == CR_OK) { + return CR_OK; + } + error: + cr_tknzr_set_cur_pos (a_this, &init_pos); + return status; +} + +/** + *Parses a string type as defined in css spec [4.1.1]: + * + *string ::= {string1}|{string2} + *string1 ::= \"([\t !#$%&(-~]|\\{nl}|\'|{nonascii}|{escape})*\" + *string2 ::= \'([\t !#$%&(-~]|\\{nl}|\"|{nonascii}|{escape})*\' + * + *@param a_this the current instance of #CRTknzr. + *@param a_start out parameter. Upon successful completion, + *points to the beginning of the string, points to an undefined value + *otherwise. + *@param a_end out parameter. Upon successful completion, points to + *the beginning of the string, points to an undefined value otherwise. + *@return CR_OK upon successful completion, an error code otherwise. + */ +static enum CRStatus +cr_tknzr_parse_string (CRTknzr * a_this, CRString ** a_str) +{ + guint32 cur_char = 0, + delim = 0; + CRInputPos init_pos; + enum CRStatus status = CR_OK; + CRString *str = NULL; + + g_return_val_if_fail (a_this && PRIVATE (a_this) + && PRIVATE (a_this)->input + && a_str, CR_BAD_PARAM_ERROR); + + RECORD_INITIAL_POS (a_this, &init_pos); + READ_NEXT_CHAR (a_this, &cur_char); + + if (cur_char == '"') + delim = '"'; + else if (cur_char == '\'') + delim = '\''; + else { + status = CR_PARSING_ERROR; + goto error; + } + str = cr_string_new (); + if (str) { + cr_tknzr_get_parsing_location + (a_this, &str->location) ; + } + for (;;) { + guchar next_chars[2] = { 0 }; + + PEEK_BYTE (a_this, 1, &next_chars[0]); + PEEK_BYTE (a_this, 2, &next_chars[1]); + + if (next_chars[0] == '\\') { + guchar *tmp_char_ptr1 = NULL, + *tmp_char_ptr2 = NULL; + guint32 esc_code = 0; + + if (next_chars[1] == '\'' || next_chars[1] == '"') { + g_string_append_unichar (str->stryng, + next_chars[1]); + SKIP_BYTES (a_this, 2); + status = CR_OK; + } else { + status = cr_tknzr_parse_escape + (a_this, &esc_code, NULL); + + if (status == CR_OK) { + g_string_append_unichar + (str->stryng, + esc_code); + } + } + + if (status != CR_OK) { + /* + *consume the '\' char, and try to parse + *a newline. + */ + READ_NEXT_CHAR (a_this, &cur_char); + + status = cr_tknzr_parse_nl + (a_this, &tmp_char_ptr1, + &tmp_char_ptr2, NULL); + } + + CHECK_PARSING_STATUS (status, FALSE); + } else if (strchr ("\t !#$%&", next_chars[0]) + || (next_chars[0] >= '(' && next_chars[0] <= '~')) { + READ_NEXT_CHAR (a_this, &cur_char); + g_string_append_unichar (str->stryng, + cur_char); + status = CR_OK; + } + + else if (cr_utils_is_nonascii (next_chars[0])) { + READ_NEXT_CHAR (a_this, &cur_char); + g_string_append_unichar (str->stryng, cur_char); + } else if (next_chars[0] == delim) { + READ_NEXT_CHAR (a_this, &cur_char); + break; + } else { + status = CR_PARSING_ERROR; + goto error; + } + } + + if (status == CR_OK) { + if (*a_str == NULL) { + *a_str = str; + str = NULL; + } else { + (*a_str)->stryng = g_string_append_len + ((*a_str)->stryng, + str->stryng->str, + str->stryng->len); + cr_string_destroy (str); + } + return CR_OK; + } + + error: + + if (str) { + cr_string_destroy (str) ; + str = NULL; + } + cr_tknzr_set_cur_pos (a_this, &init_pos); + return status; +} + +/** + *Parses the an nmstart as defined by the css2 spec [4.1.1]: + * nmstart [a-zA-Z]|{nonascii}|{escape} + * + *@param a_this the current instance of #CRTknzr. + *@param a_start out param. A pointer to the starting point of + *the token. + *@param a_end out param. A pointer to the ending point of the + *token. + *@param a_char out param. The actual parsed nmchar. + *@return CR_OK upon successful completion, + *an error code otherwise. + */ +static enum CRStatus +cr_tknzr_parse_nmstart (CRTknzr * a_this, + guint32 * a_char, + CRParsingLocation *a_location) +{ + CRInputPos init_pos; + enum CRStatus status = CR_OK; + guint32 cur_char = 0, + next_char = 0; + + g_return_val_if_fail (a_this && PRIVATE (a_this) + && PRIVATE (a_this)->input + && a_char, CR_BAD_PARAM_ERROR); + + RECORD_INITIAL_POS (a_this, &init_pos); + + PEEK_NEXT_CHAR (a_this, &next_char); + + if (next_char == '\\') { + status = cr_tknzr_parse_escape (a_this, a_char, + a_location); + + if (status != CR_OK) + goto error; + + } else if (cr_utils_is_nonascii (next_char) == TRUE + || ((next_char >= 'a') && (next_char <= 'z')) + || ((next_char >= 'A') && (next_char <= 'Z')) + ) { + READ_NEXT_CHAR (a_this, &cur_char); + if (a_location) { + cr_tknzr_get_parsing_location (a_this, + a_location) ; + } + *a_char = cur_char; + status = CR_OK; + } else { + status = CR_PARSING_ERROR; + goto error; + } + + return CR_OK; + + error: + cr_tknzr_set_cur_pos (a_this, &init_pos); + + return status; + +} + +/** + *Parses an nmchar as described in the css spec at + *chap 4.1.1: + *nmchar ::= [a-z0-9-]|{nonascii}|{escape} + * + *Humm, I have added the possibility for nmchar to + *contain upper case letters. + * + *@param a_this the current instance of #CRTknzr. + *@param a_start out param. A pointer to the starting point of + *the token. + *@param a_end out param. A pointer to the ending point of the + *token. + *@param a_char out param. The actual parsed nmchar. + *@return CR_OK upon successful completion, + *an error code otherwise. + */ +static enum CRStatus +cr_tknzr_parse_nmchar (CRTknzr * a_this, guint32 * a_char, + CRParsingLocation *a_location) +{ + guint32 cur_char = 0, + next_char = 0; + enum CRStatus status = CR_OK; + CRInputPos init_pos; + + g_return_val_if_fail (a_this && PRIVATE (a_this) && a_char, + CR_BAD_PARAM_ERROR); + + RECORD_INITIAL_POS (a_this, &init_pos); + + status = cr_input_peek_char (PRIVATE (a_this)->input, + &next_char) ; + if (status != CR_OK) + goto error; + + if (next_char == '\\') { + status = cr_tknzr_parse_escape (a_this, a_char, + a_location); + + if (status != CR_OK) + goto error; + + } else if (cr_utils_is_nonascii (next_char) == TRUE + || ((next_char >= 'a') && (next_char <= 'z')) + || ((next_char >= 'A') && (next_char <= 'Z')) + || ((next_char >= '0') && (next_char <= '9')) + || (next_char == '-') + || (next_char == '_') /*'_' not allowed by the spec. */ + ) { + READ_NEXT_CHAR (a_this, &cur_char); + *a_char = cur_char; + status = CR_OK; + if (a_location) { + cr_tknzr_get_parsing_location + (a_this, a_location) ; + } + } else { + status = CR_PARSING_ERROR; + goto error; + } + return CR_OK; + + error: + cr_tknzr_set_cur_pos (a_this, &init_pos); + return status; +} + +/** + *Parses an "ident" as defined in css spec [4.1.1]: + *ident ::= {nmstart}{nmchar}* + * + *Actually parses it using the css3 grammar: + *ident ::= -?{nmstart}{nmchar}* + *@param a_this the currens instance of #CRTknzr. + * + *@param a_str a pointer to parsed ident. If *a_str is NULL, + *this function allocates a new instance of CRString. If not, + *the function just appends the parsed string to the one passed. + *In both cases it is up to the caller to free *a_str. + * + *@return CR_OK upon successful completion, an error code + *otherwise. + */ +static enum CRStatus +cr_tknzr_parse_ident (CRTknzr * a_this, CRString ** a_str) +{ + guint32 tmp_char = 0; + CRString *stringue = NULL ; + CRInputPos init_pos; + enum CRStatus status = CR_OK; + gboolean location_is_set = FALSE ; + + g_return_val_if_fail (a_this && PRIVATE (a_this) + && PRIVATE (a_this)->input + && a_str, CR_BAD_PARAM_ERROR); + + RECORD_INITIAL_POS (a_this, &init_pos); + PEEK_NEXT_CHAR (a_this, &tmp_char) ; + stringue = cr_string_new () ; + g_return_val_if_fail (stringue, + CR_OUT_OF_MEMORY_ERROR) ; + + if (tmp_char == '-') { + READ_NEXT_CHAR (a_this, &tmp_char) ; + cr_tknzr_get_parsing_location + (a_this, &stringue->location) ; + location_is_set = TRUE ; + g_string_append_unichar (stringue->stryng, + tmp_char) ; + } + status = cr_tknzr_parse_nmstart (a_this, &tmp_char, NULL); + if (status != CR_OK) { + status = CR_PARSING_ERROR; + goto end ; + } + if (location_is_set == FALSE) { + cr_tknzr_get_parsing_location + (a_this, &stringue->location) ; + location_is_set = TRUE ; + } + g_string_append_unichar (stringue->stryng, tmp_char); + for (;;) { + status = cr_tknzr_parse_nmchar (a_this, + &tmp_char, + NULL); + if (status != CR_OK) { + status = CR_OK ; + break; + } + g_string_append_unichar (stringue->stryng, tmp_char); + } + if (status == CR_OK) { + if (!*a_str) { + *a_str = stringue ; + + } else { + g_string_append_len ((*a_str)->stryng, + stringue->stryng->str, + stringue->stryng->len) ; + cr_string_destroy (stringue) ; + } + stringue = NULL ; + } + + error: + end: + if (stringue) { + cr_string_destroy (stringue) ; + stringue = NULL ; + } + if (status != CR_OK ) { + cr_tknzr_set_cur_pos (a_this, &init_pos) ; + } + return status ; +} + + +/** + *Parses a "name" as defined by css spec [4.1.1]: + *name ::= {nmchar}+ + * + *@param a_this the current instance of #CRTknzr. + * + *@param a_str out parameter. A pointer to the successfully parsed + *name. If *a_str is set to NULL, this function allocates a new instance + *of CRString. If not, it just appends the parsed name to the passed *a_str. + *In both cases, it is up to the caller to free *a_str. + * + *@return CR_OK upon successful completion, an error code otherwise. + */ +static enum CRStatus +cr_tknzr_parse_name (CRTknzr * a_this, + CRString ** a_str) +{ + guint32 tmp_char = 0; + CRInputPos init_pos; + enum CRStatus status = CR_OK; + gboolean str_needs_free = FALSE, + is_first_nmchar=TRUE ; + glong i = 0; + CRParsingLocation loc = {0} ; + + g_return_val_if_fail (a_this && PRIVATE (a_this) + && PRIVATE (a_this)->input + && a_str, + CR_BAD_PARAM_ERROR) ; + + RECORD_INITIAL_POS (a_this, &init_pos); + + if (*a_str == NULL) { + *a_str = cr_string_new (); + str_needs_free = TRUE; + } + for (i = 0;; i++) { + if (is_first_nmchar == TRUE) { + status = cr_tknzr_parse_nmchar + (a_this, &tmp_char, + &loc) ; + is_first_nmchar = FALSE ; + } else { + status = cr_tknzr_parse_nmchar + (a_this, &tmp_char, NULL) ; + } + if (status != CR_OK) + break; + g_string_append_unichar ((*a_str)->stryng, + tmp_char); + } + if (i > 0) { + cr_parsing_location_copy + (&(*a_str)->location, &loc) ; + return CR_OK; + } + if (str_needs_free == TRUE && *a_str) { + cr_string_destroy (*a_str); + *a_str = NULL; + } + cr_tknzr_set_cur_pos (a_this, &init_pos); + return CR_PARSING_ERROR; +} + +/** + *Parses a "hash" as defined by the css spec in [4.1.1]: + *HASH ::= #{name} + */ +static enum CRStatus +cr_tknzr_parse_hash (CRTknzr * a_this, CRString ** a_str) +{ + guint32 cur_char = 0; + CRInputPos init_pos; + enum CRStatus status = CR_OK; + gboolean str_needs_free = FALSE; + CRParsingLocation loc = {0} ; + + g_return_val_if_fail (a_this && PRIVATE (a_this) + && PRIVATE (a_this)->input, + CR_BAD_PARAM_ERROR); + + RECORD_INITIAL_POS (a_this, &init_pos); + READ_NEXT_CHAR (a_this, &cur_char); + if (cur_char != '#') { + status = CR_PARSING_ERROR; + goto error; + } + if (*a_str == NULL) { + *a_str = cr_string_new (); + str_needs_free = TRUE; + } + cr_tknzr_get_parsing_location (a_this, + &loc) ; + status = cr_tknzr_parse_name (a_this, a_str); + cr_parsing_location_copy (&(*a_str)->location, &loc) ; + if (status != CR_OK) { + goto error; + } + return CR_OK; + + error: + if (str_needs_free == TRUE && *a_str) { + cr_string_destroy (*a_str); + *a_str = NULL; + } + + cr_tknzr_set_cur_pos (a_this, &init_pos); + return status; +} + +/** + *Parses an uri as defined by the css spec [4.1.1]: + * URI ::= url\({w}{string}{w}\) + * |url\({w}([!#$%&*-~]|{nonascii}|{escape})*{w}\) + * + *@param a_this the current instance of #CRTknzr. + *@param a_str the successfully parsed url. + *@return CR_OK upon successful completion, an error code otherwise. + */ +static enum CRStatus +cr_tknzr_parse_uri (CRTknzr * a_this, + CRString ** a_str) +{ + guint32 cur_char = 0; + CRInputPos init_pos; + enum CRStatus status = CR_PARSING_ERROR; + guchar tab[4] = { 0 }, *tmp_ptr1 = NULL, *tmp_ptr2 = NULL; + CRString *str = NULL; + CRParsingLocation location = {0} ; + + g_return_val_if_fail (a_this + && PRIVATE (a_this) + && PRIVATE (a_this)->input + && a_str, + CR_BAD_PARAM_ERROR); + + RECORD_INITIAL_POS (a_this, &init_pos); + + PEEK_BYTE (a_this, 1, &tab[0]); + PEEK_BYTE (a_this, 2, &tab[1]); + PEEK_BYTE (a_this, 3, &tab[2]); + PEEK_BYTE (a_this, 4, &tab[3]); + + if (tab[0] != 'u' || tab[1] != 'r' || tab[2] != 'l' || tab[3] != '(') { + status = CR_PARSING_ERROR; + goto error; + } + /* + *Here, we want to skip 4 bytes ('u''r''l''('). + *But we also need to keep track of the parsing location + *of the 'u'. So, we skip 1 byte, we record the parsing + *location, then we skip the 3 remaining bytes. + */ + SKIP_CHARS (a_this, 1); + cr_tknzr_get_parsing_location (a_this, &location) ; + SKIP_CHARS (a_this, 3); + cr_tknzr_try_to_skip_spaces (a_this); + status = cr_tknzr_parse_string (a_this, a_str); + + if (status == CR_OK) { + guint32 next_char = 0; + status = cr_tknzr_parse_w (a_this, &tmp_ptr1, + &tmp_ptr2, NULL); + cr_tknzr_try_to_skip_spaces (a_this); + PEEK_NEXT_CHAR (a_this, &next_char); + if (next_char == ')') { + READ_NEXT_CHAR (a_this, &cur_char); + status = CR_OK; + } else { + status = CR_PARSING_ERROR; + } + } + if (status != CR_OK) { + str = cr_string_new (); + for (;;) { + guint32 next_char = 0; + PEEK_NEXT_CHAR (a_this, &next_char); + if (strchr ("!#$%&", next_char) + || (next_char >= '*' && next_char <= '~') + || (cr_utils_is_nonascii (next_char) == TRUE)) { + READ_NEXT_CHAR (a_this, &cur_char); + g_string_append_unichar + (str->stryng, cur_char); + status = CR_OK; + } else { + guint32 esc_code = 0; + status = cr_tknzr_parse_escape + (a_this, &esc_code, NULL); + if (status == CR_OK) { + g_string_append_unichar + (str->stryng, + esc_code); + } else { + status = CR_OK; + break; + } + } + } + cr_tknzr_try_to_skip_spaces (a_this); + READ_NEXT_CHAR (a_this, &cur_char); + if (cur_char == ')') { + status = CR_OK; + } else { + status = CR_PARSING_ERROR; + goto error; + } + if (str) { + if (*a_str == NULL) { + *a_str = str; + str = NULL; + } else { + g_string_append_len + ((*a_str)->stryng, + str->stryng->str, + str->stryng->len); + cr_string_destroy (str); + } + } + } + + cr_parsing_location_copy + (&(*a_str)->location, + &location) ; + return CR_OK ; + error: + if (str) { + cr_string_destroy (str); + str = NULL; + } + cr_tknzr_set_cur_pos (a_this, &init_pos); + return status; +} + +/** + *parses an RGB as defined in the css2 spec. + *rgb: rgb '('S*{num}%?S* ',' {num}#?S*,S*{num}#?S*')' + * + *@param a_this the "this pointer" of the current instance of + *@param a_rgb out parameter the parsed rgb. + *@return CR_OK upon successful completion, an error code otherwise. + */ +static enum CRStatus +cr_tknzr_parse_rgb (CRTknzr * a_this, CRRgb ** a_rgb) +{ + enum CRStatus status = CR_OK; + CRInputPos init_pos; + CRNum *num = NULL; + guchar next_bytes[3] = { 0 }, cur_byte = 0; + glong red = 0, + green = 0, + blue = 0, + i = 0; + gboolean is_percentage = FALSE; + CRParsingLocation location = {0} ; + + g_return_val_if_fail (a_this && PRIVATE (a_this), CR_BAD_PARAM_ERROR); + + RECORD_INITIAL_POS (a_this, &init_pos); + + PEEK_BYTE (a_this, 1, &next_bytes[0]); + PEEK_BYTE (a_this, 2, &next_bytes[1]); + PEEK_BYTE (a_this, 3, &next_bytes[2]); + + if (((next_bytes[0] == 'r') || (next_bytes[0] == 'R')) + && ((next_bytes[1] == 'g') || (next_bytes[1] == 'G')) + && ((next_bytes[2] == 'b') || (next_bytes[2] == 'B'))) { + SKIP_CHARS (a_this, 1); + cr_tknzr_get_parsing_location (a_this, &location) ; + SKIP_CHARS (a_this, 2); + } else { + status = CR_PARSING_ERROR; + goto error; + } + READ_NEXT_BYTE (a_this, &cur_byte); + ENSURE_PARSING_COND (cur_byte == '('); + + cr_tknzr_try_to_skip_spaces (a_this); + status = cr_tknzr_parse_num (a_this, &num); + ENSURE_PARSING_COND ((status == CR_OK) && (num != NULL)); + + if (num->val > G_MAXLONG) { + status = CR_PARSING_ERROR; + goto error; + } + + red = num->val; + cr_num_destroy (num); + num = NULL; + + PEEK_BYTE (a_this, 1, &next_bytes[0]); + if (next_bytes[0] == '%') { + SKIP_CHARS (a_this, 1); + is_percentage = TRUE; + } + cr_tknzr_try_to_skip_spaces (a_this); + + for (i = 0; i < 2; i++) { + READ_NEXT_BYTE (a_this, &cur_byte); + ENSURE_PARSING_COND (cur_byte == ','); + + cr_tknzr_try_to_skip_spaces (a_this); + status = cr_tknzr_parse_num (a_this, &num); + ENSURE_PARSING_COND ((status == CR_OK) && (num != NULL)); + + if (num->val > G_MAXLONG) { + status = CR_PARSING_ERROR; + goto error; + } + + PEEK_BYTE (a_this, 1, &next_bytes[0]); + if (next_bytes[0] == '%') { + SKIP_CHARS (a_this, 1); + is_percentage = 1; + } + + if (i == 0) { + green = num->val; + } else if (i == 1) { + blue = num->val; + } + + if (num) { + cr_num_destroy (num); + num = NULL; + } + cr_tknzr_try_to_skip_spaces (a_this); + } + + READ_NEXT_BYTE (a_this, &cur_byte); + if (*a_rgb == NULL) { + *a_rgb = cr_rgb_new_with_vals (red, green, blue, + is_percentage); + + if (*a_rgb == NULL) { + status = CR_ERROR; + goto error; + } + status = CR_OK; + } else { + (*a_rgb)->red = red; + (*a_rgb)->green = green; + (*a_rgb)->blue = blue; + (*a_rgb)->is_percentage = is_percentage; + + status = CR_OK; + } + + if (status == CR_OK) { + if (a_rgb && *a_rgb) { + cr_parsing_location_copy + (&(*a_rgb)->location, + &location) ; + } + return CR_OK; + } + + error: + if (num) { + cr_num_destroy (num); + num = NULL; + } + + cr_tknzr_set_cur_pos (a_this, &init_pos); + return CR_OK; +} + +/** + *Parses a atkeyword as defined by the css spec in [4.1.1]: + *ATKEYWORD ::= @{ident} + * + *@param a_this the "this pointer" of the current instance of + *#CRTknzr. + * + *@param a_str out parameter. The parsed atkeyword. If *a_str is + *set to NULL this function allocates a new instance of CRString and + *sets it to the parsed atkeyword. If not, this function just appends + *the parsed atkeyword to the end of *a_str. In both cases it is up to + *the caller to free *a_str. + * + *@return CR_OK upon successful completion, an error code otherwise. + */ +static enum CRStatus +cr_tknzr_parse_atkeyword (CRTknzr * a_this, + CRString ** a_str) +{ + guint32 cur_char = 0; + CRInputPos init_pos; + gboolean str_needs_free = FALSE; + enum CRStatus status = CR_OK; + + g_return_val_if_fail (a_this && PRIVATE (a_this) + && PRIVATE (a_this)->input + && a_str, CR_BAD_PARAM_ERROR); + + RECORD_INITIAL_POS (a_this, &init_pos); + + READ_NEXT_CHAR (a_this, &cur_char); + + if (cur_char != '@') { + status = CR_PARSING_ERROR; + goto error; + } + + if (*a_str == NULL) { + *a_str = cr_string_new (); + str_needs_free = TRUE; + } + status = cr_tknzr_parse_ident (a_this, a_str); + if (status != CR_OK) { + goto error; + } + return CR_OK; + error: + + if (str_needs_free == TRUE && *a_str) { + cr_string_destroy (*a_str); + *a_str = NULL; + } + cr_tknzr_set_cur_pos (a_this, &init_pos); + return status; +} + +static enum CRStatus +cr_tknzr_parse_important (CRTknzr * a_this, + CRParsingLocation *a_location) +{ + guint32 cur_char = 0; + CRInputPos init_pos; + enum CRStatus status = CR_OK; + + g_return_val_if_fail (a_this && PRIVATE (a_this) + && PRIVATE (a_this)->input, + CR_BAD_PARAM_ERROR); + + RECORD_INITIAL_POS (a_this, &init_pos); + READ_NEXT_CHAR (a_this, &cur_char); + ENSURE_PARSING_COND (cur_char == '!'); + if (a_location) { + cr_tknzr_get_parsing_location (a_this, + a_location) ; + } + cr_tknzr_try_to_skip_spaces (a_this); + + if (BYTE (PRIVATE (a_this)->input, 1, NULL) == 'i' + && BYTE (PRIVATE (a_this)->input, 2, NULL) == 'm' + && BYTE (PRIVATE (a_this)->input, 3, NULL) == 'p' + && BYTE (PRIVATE (a_this)->input, 4, NULL) == 'o' + && BYTE (PRIVATE (a_this)->input, 5, NULL) == 'r' + && BYTE (PRIVATE (a_this)->input, 6, NULL) == 't' + && BYTE (PRIVATE (a_this)->input, 7, NULL) == 'a' + && BYTE (PRIVATE (a_this)->input, 8, NULL) == 'n' + && BYTE (PRIVATE (a_this)->input, 9, NULL) == 't') { + SKIP_BYTES (a_this, 9); + if (a_location) { + cr_tknzr_get_parsing_location (a_this, + a_location) ; + } + return CR_OK; + } else { + status = CR_PARSING_ERROR; + } + + error: + cr_tknzr_set_cur_pos (a_this, &init_pos); + + return status; +} + +/** + *Parses a num as defined in the css spec [4.1.1]: + *[0-9]+|[0-9]*\.[0-9]+ + *@param a_this the current instance of #CRTknzr. + *@param a_num out parameter. The parsed number. + *@return CR_OK upon successful completion, + *an error code otherwise. + * + *The CSS specification says that numbers may be + *preceded by '+' or '-' to indicate the sign. + *Technically, the "num" construction as defined + *by the tokenizer doesn't allow this, but we parse + *it here for simplicity. + */ +static enum CRStatus +cr_tknzr_parse_num (CRTknzr * a_this, + CRNum ** a_num) +{ + enum CRStatus status = CR_PARSING_ERROR; + enum CRNumType val_type = NUM_GENERIC; + gboolean parsing_dec, /* true iff seen decimal point. */ + parsed; /* true iff the substring seen so far is a valid CSS + number, i.e. `[0-9]+|[0-9]*\.[0-9]+'. */ + guint32 cur_char = 0, + next_char = 0; + gdouble numerator, denominator = 1; + CRInputPos init_pos; + CRParsingLocation location = {0} ; + int sign = 1; + + g_return_val_if_fail (a_this && PRIVATE (a_this) + && PRIVATE (a_this)->input, + CR_BAD_PARAM_ERROR); + + RECORD_INITIAL_POS (a_this, &init_pos); + READ_NEXT_CHAR (a_this, &cur_char); + + if (cur_char == '+' || cur_char == '-') { + if (cur_char == '-') { + sign = -1; + } + READ_NEXT_CHAR (a_this, &cur_char); + } + + if (IS_NUM (cur_char)) { + numerator = (cur_char - '0'); + parsing_dec = FALSE; + parsed = TRUE; + } else if (cur_char == '.') { + numerator = 0; + parsing_dec = TRUE; + parsed = FALSE; + } else { + status = CR_PARSING_ERROR; + goto error; + } + cr_tknzr_get_parsing_location (a_this, &location) ; + + for (;;) { + status = cr_tknzr_peek_char (a_this, &next_char); + if (status != CR_OK) { + if (status == CR_END_OF_INPUT_ERROR) + status = CR_OK; + break; + } + if (next_char == '.') { + if (parsing_dec) { + status = CR_PARSING_ERROR; + goto error; + } + + READ_NEXT_CHAR (a_this, &cur_char); + parsing_dec = TRUE; + parsed = FALSE; /* In CSS, there must be at least + one digit after `.'. */ + } else if (IS_NUM (next_char)) { + READ_NEXT_CHAR (a_this, &cur_char); + parsed = TRUE; + + numerator = numerator * 10 + (cur_char - '0'); + if (parsing_dec) { + denominator *= 10; + } + } else { + break; + } + } + + if (!parsed) { + status = CR_PARSING_ERROR; + } + + /* + *Now, set the output param values. + */ + if (status == CR_OK) { + gdouble val = (numerator / denominator) * sign; + if (*a_num == NULL) { + *a_num = cr_num_new_with_val (val, val_type); + + if (*a_num == NULL) { + status = CR_ERROR; + goto error; + } + } else { + (*a_num)->val = val; + (*a_num)->type = val_type; + } + cr_parsing_location_copy (&(*a_num)->location, + &location) ; + return CR_OK; + } + + error: + + cr_tknzr_set_cur_pos (a_this, &init_pos); + + return status; +} + +/********************************************* + *PUBLIC methods + ********************************************/ + +CRTknzr * +cr_tknzr_new (CRInput * a_input) +{ + CRTknzr *result = NULL; + + result = g_try_malloc (sizeof (CRTknzr)); + + if (result == NULL) { + cr_utils_trace_info ("Out of memory"); + return NULL; + } + + memset (result, 0, sizeof (CRTknzr)); + + result->priv = g_try_malloc (sizeof (CRTknzrPriv)); + + if (result->priv == NULL) { + cr_utils_trace_info ("Out of memory"); + + if (result) { + g_free (result); + result = NULL; + } + + return NULL; + } + memset (result->priv, 0, sizeof (CRTknzrPriv)); + if (a_input) + cr_tknzr_set_input (result, a_input); + return result; +} + +CRTknzr * +cr_tknzr_new_from_buf (guchar * a_buf, gulong a_len, + enum CREncoding a_enc, + gboolean a_free_at_destroy) +{ + CRTknzr *result = NULL; + CRInput *input = NULL; + + input = cr_input_new_from_buf (a_buf, a_len, a_enc, + a_free_at_destroy); + + g_return_val_if_fail (input != NULL, NULL); + + result = cr_tknzr_new (input); + + return result; +} + +CRTknzr * +cr_tknzr_new_from_uri (const guchar * a_file_uri, + enum CREncoding a_enc) +{ + CRTknzr *result = NULL; + CRInput *input = NULL; + + input = cr_input_new_from_uri ((const gchar *) a_file_uri, a_enc); + g_return_val_if_fail (input != NULL, NULL); + + result = cr_tknzr_new (input); + + return result; +} + +void +cr_tknzr_ref (CRTknzr * a_this) +{ + g_return_if_fail (a_this && PRIVATE (a_this)); + + PRIVATE (a_this)->ref_count++; +} + +gboolean +cr_tknzr_unref (CRTknzr * a_this) +{ + g_return_val_if_fail (a_this && PRIVATE (a_this), FALSE); + + if (PRIVATE (a_this)->ref_count > 0) { + PRIVATE (a_this)->ref_count--; + } + + if (PRIVATE (a_this)->ref_count == 0) { + cr_tknzr_destroy (a_this); + return TRUE; + } + + return FALSE; +} + +enum CRStatus +cr_tknzr_set_input (CRTknzr * a_this, CRInput * a_input) +{ + g_return_val_if_fail (a_this && PRIVATE (a_this), CR_BAD_PARAM_ERROR); + + if (PRIVATE (a_this)->input) { + cr_input_unref (PRIVATE (a_this)->input); + } + + PRIVATE (a_this)->input = a_input; + + cr_input_ref (PRIVATE (a_this)->input); + + return CR_OK; +} + +enum CRStatus +cr_tknzr_get_input (CRTknzr * a_this, CRInput ** a_input) +{ + g_return_val_if_fail (a_this && PRIVATE (a_this), CR_BAD_PARAM_ERROR); + + *a_input = PRIVATE (a_this)->input; + + return CR_OK; +} + +/********************************* + *Tokenizer input handling routines + *********************************/ + +/** + *Reads the next byte from the parser input stream. + *@param a_this the "this pointer" of the current instance of + *#CRParser. + *@param a_byte out parameter the place where to store the byte + *read. + *@return CR_OK upon successful completion, an error + *code otherwise. + */ +enum CRStatus +cr_tknzr_read_byte (CRTknzr * a_this, guchar * a_byte) +{ + g_return_val_if_fail (a_this && PRIVATE (a_this), CR_BAD_PARAM_ERROR); + + return cr_input_read_byte (PRIVATE (a_this)->input, a_byte); + +} + +/** + *Reads the next char from the parser input stream. + *@param a_this the current instance of #CRTknzr. + *@param a_char out parameter. The read char. + *@return CR_OK upon successful completion, an error code + *otherwise. + */ +enum CRStatus +cr_tknzr_read_char (CRTknzr * a_this, guint32 * a_char) +{ + g_return_val_if_fail (a_this && PRIVATE (a_this) + && PRIVATE (a_this)->input + && a_char, CR_BAD_PARAM_ERROR); + + if (PRIVATE (a_this)->token_cache) { + cr_input_set_cur_pos (PRIVATE (a_this)->input, + &PRIVATE (a_this)->prev_pos); + cr_token_destroy (PRIVATE (a_this)->token_cache); + PRIVATE (a_this)->token_cache = NULL; + } + + return cr_input_read_char (PRIVATE (a_this)->input, a_char); +} + +/** + *Peeks a char from the parser input stream. + *To "peek a char" means reads the next char without consuming it. + *Subsequent calls to this function return the same char. + *@param a_this the current instance of #CRTknzr. + *@param a_char out parameter. The peeked char upon successful completion. + *@return CR_OK upon successful completion, an error code otherwise. + */ +enum CRStatus +cr_tknzr_peek_char (CRTknzr * a_this, guint32 * a_char) +{ + g_return_val_if_fail (a_this && PRIVATE (a_this) + && PRIVATE (a_this)->input + && a_char, CR_BAD_PARAM_ERROR); + + if (PRIVATE (a_this)->token_cache) { + cr_input_set_cur_pos (PRIVATE (a_this)->input, + &PRIVATE (a_this)->prev_pos); + cr_token_destroy (PRIVATE (a_this)->token_cache); + PRIVATE (a_this)->token_cache = NULL; + } + + return cr_input_peek_char (PRIVATE (a_this)->input, a_char); +} + +/** + *Peeks a byte ahead at a given position in the parser input stream. + *@param a_this the current instance of #CRTknzr. + *@param a_offset the offset of the peeked byte starting from the current + *byte in the parser input stream. + *@param a_byte out parameter. The peeked byte upon + *successful completion. + *@return CR_OK upon successful completion, an error code otherwise. + */ +enum CRStatus +cr_tknzr_peek_byte (CRTknzr * a_this, gulong a_offset, guchar * a_byte) +{ + g_return_val_if_fail (a_this && PRIVATE (a_this) + && PRIVATE (a_this)->input && a_byte, + CR_BAD_PARAM_ERROR); + + if (PRIVATE (a_this)->token_cache) { + cr_input_set_cur_pos (PRIVATE (a_this)->input, + &PRIVATE (a_this)->prev_pos); + cr_token_destroy (PRIVATE (a_this)->token_cache); + PRIVATE (a_this)->token_cache = NULL; + } + + return cr_input_peek_byte (PRIVATE (a_this)->input, + CR_SEEK_CUR, a_offset, a_byte); +} + +/** + *Same as cr_tknzr_peek_byte() but this api returns the byte peeked. + *@param a_this the current instance of #CRTknzr. + *@param a_offset the offset of the peeked byte starting from the current + *byte in the parser input stream. + *@param a_eof out parameter. If not NULL, is set to TRUE if we reached end of + *file, FALE otherwise. If the caller sets it to NULL, this parameter + *is just ignored. + *@return the peeked byte. + */ +guchar +cr_tknzr_peek_byte2 (CRTknzr * a_this, gulong a_offset, gboolean * a_eof) +{ + g_return_val_if_fail (a_this && PRIVATE (a_this) + && PRIVATE (a_this)->input, 0); + + return cr_input_peek_byte2 (PRIVATE (a_this)->input, a_offset, a_eof); +} + +/** + *Gets the number of bytes left in the topmost input stream + *associated to this parser. + *@param a_this the current instance of #CRTknzr + *@return the number of bytes left or -1 in case of error. + */ +glong +cr_tknzr_get_nb_bytes_left (CRTknzr * a_this) +{ + g_return_val_if_fail (a_this && PRIVATE (a_this) + && PRIVATE (a_this)->input, CR_BAD_PARAM_ERROR); + + if (PRIVATE (a_this)->token_cache) { + cr_input_set_cur_pos (PRIVATE (a_this)->input, + &PRIVATE (a_this)->prev_pos); + cr_token_destroy (PRIVATE (a_this)->token_cache); + PRIVATE (a_this)->token_cache = NULL; + } + + return cr_input_get_nb_bytes_left (PRIVATE (a_this)->input); +} + +enum CRStatus +cr_tknzr_get_cur_pos (CRTknzr * a_this, CRInputPos * a_pos) +{ + g_return_val_if_fail (a_this && PRIVATE (a_this) + && PRIVATE (a_this)->input + && a_pos, CR_BAD_PARAM_ERROR); + + if (PRIVATE (a_this)->token_cache) { + cr_input_set_cur_pos (PRIVATE (a_this)->input, + &PRIVATE (a_this)->prev_pos); + cr_token_destroy (PRIVATE (a_this)->token_cache); + PRIVATE (a_this)->token_cache = NULL; + } + + return cr_input_get_cur_pos (PRIVATE (a_this)->input, a_pos); +} + +enum CRStatus +cr_tknzr_get_parsing_location (CRTknzr *a_this, + CRParsingLocation *a_loc) +{ + g_return_val_if_fail (a_this + && PRIVATE (a_this) + && a_loc, + CR_BAD_PARAM_ERROR) ; + + return cr_input_get_parsing_location + (PRIVATE (a_this)->input, a_loc) ; +} + +enum CRStatus +cr_tknzr_get_cur_byte_addr (CRTknzr * a_this, guchar ** a_addr) +{ + g_return_val_if_fail (a_this && PRIVATE (a_this) + && PRIVATE (a_this)->input, CR_BAD_PARAM_ERROR); + if (PRIVATE (a_this)->token_cache) { + cr_input_set_cur_pos (PRIVATE (a_this)->input, + &PRIVATE (a_this)->prev_pos); + cr_token_destroy (PRIVATE (a_this)->token_cache); + PRIVATE (a_this)->token_cache = NULL; + } + + return cr_input_get_cur_byte_addr (PRIVATE (a_this)->input, a_addr); +} + +enum CRStatus +cr_tknzr_seek_index (CRTknzr * a_this, enum CRSeekPos a_origin, gint a_pos) +{ + g_return_val_if_fail (a_this && PRIVATE (a_this) + && PRIVATE (a_this)->input, CR_BAD_PARAM_ERROR); + + if (PRIVATE (a_this)->token_cache) { + cr_input_set_cur_pos (PRIVATE (a_this)->input, + &PRIVATE (a_this)->prev_pos); + cr_token_destroy (PRIVATE (a_this)->token_cache); + PRIVATE (a_this)->token_cache = NULL; + } + + return cr_input_seek_index (PRIVATE (a_this)->input, a_origin, a_pos); +} + +enum CRStatus +cr_tknzr_consume_chars (CRTknzr * a_this, guint32 a_char, glong * a_nb_char) +{ + gulong consumed = *(gulong *) a_nb_char; + enum CRStatus status; + g_return_val_if_fail (a_this && PRIVATE (a_this) + && PRIVATE (a_this)->input, CR_BAD_PARAM_ERROR); + + if (PRIVATE (a_this)->token_cache) { + cr_input_set_cur_pos (PRIVATE (a_this)->input, + &PRIVATE (a_this)->prev_pos); + cr_token_destroy (PRIVATE (a_this)->token_cache); + PRIVATE (a_this)->token_cache = NULL; + } + + status = cr_input_consume_chars (PRIVATE (a_this)->input, + a_char, &consumed); + *a_nb_char = (glong) consumed; + return status; +} + +enum CRStatus +cr_tknzr_set_cur_pos (CRTknzr * a_this, CRInputPos * a_pos) +{ + g_return_val_if_fail (a_this && PRIVATE (a_this) + && PRIVATE (a_this)->input, CR_BAD_PARAM_ERROR); + + if (PRIVATE (a_this)->token_cache) { + cr_token_destroy (PRIVATE (a_this)->token_cache); + PRIVATE (a_this)->token_cache = NULL; + } + + return cr_input_set_cur_pos (PRIVATE (a_this)->input, a_pos); +} + +enum CRStatus +cr_tknzr_unget_token (CRTknzr * a_this, CRToken * a_token) +{ + g_return_val_if_fail (a_this && PRIVATE (a_this) + && PRIVATE (a_this)->token_cache == NULL, + CR_BAD_PARAM_ERROR); + + PRIVATE (a_this)->token_cache = a_token; + + return CR_OK; +} + +/** + *Returns the next token of the input stream. + *This method is really central. Each parsing + *method calls it. + *@param a_this the current tokenizer. + *@param a_tk out parameter. The returned token. + *for the sake of mem leak avoidance, *a_tk must + *be NULL. + *@param CR_OK upon successful completion, an error code + *otherwise. + */ +enum CRStatus +cr_tknzr_get_next_token (CRTknzr * a_this, CRToken ** a_tk) +{ + enum CRStatus status = CR_OK; + CRToken *token = NULL; + CRInputPos init_pos; + guint32 next_char = 0; + guchar next_bytes[4] = { 0 }; + gboolean reached_eof = FALSE; + CRInput *input = NULL; + CRString *str = NULL; + CRRgb *rgb = NULL; + CRParsingLocation location = {0} ; + + g_return_val_if_fail (a_this && PRIVATE (a_this) + && a_tk && *a_tk == NULL + && PRIVATE (a_this)->input, + CR_BAD_PARAM_ERROR); + + if (PRIVATE (a_this)->token_cache) { + *a_tk = PRIVATE (a_this)->token_cache; + PRIVATE (a_this)->token_cache = NULL; + return CR_OK; + } + + RECORD_INITIAL_POS (a_this, &init_pos); + + status = cr_input_get_end_of_file + (PRIVATE (a_this)->input, &reached_eof); + ENSURE_PARSING_COND (status == CR_OK); + + if (reached_eof == TRUE) { + status = CR_END_OF_INPUT_ERROR; + goto error; + } + + input = PRIVATE (a_this)->input; + + PEEK_NEXT_CHAR (a_this, &next_char); + token = cr_token_new (); + ENSURE_PARSING_COND (token); + + switch (next_char) { + case '@': + { + if (BYTE (input, 2, NULL) == 'f' + && BYTE (input, 3, NULL) == 'o' + && BYTE (input, 4, NULL) == 'n' + && BYTE (input, 5, NULL) == 't' + && BYTE (input, 6, NULL) == '-' + && BYTE (input, 7, NULL) == 'f' + && BYTE (input, 8, NULL) == 'a' + && BYTE (input, 9, NULL) == 'c' + && BYTE (input, 10, NULL) == 'e') { + SKIP_CHARS (a_this, 1); + cr_tknzr_get_parsing_location + (a_this, &location) ; + SKIP_CHARS (a_this, 9); + status = cr_token_set_font_face_sym (token); + CHECK_PARSING_STATUS (status, TRUE); + cr_parsing_location_copy (&token->location, + &location) ; + goto done; + } + + if (BYTE (input, 2, NULL) == 'c' + && BYTE (input, 3, NULL) == 'h' + && BYTE (input, 4, NULL) == 'a' + && BYTE (input, 5, NULL) == 'r' + && BYTE (input, 6, NULL) == 's' + && BYTE (input, 7, NULL) == 'e' + && BYTE (input, 8, NULL) == 't') { + SKIP_CHARS (a_this, 1); + cr_tknzr_get_parsing_location + (a_this, &location) ; + SKIP_CHARS (a_this, 7); + status = cr_token_set_charset_sym (token); + CHECK_PARSING_STATUS (status, TRUE); + cr_parsing_location_copy (&token->location, + &location) ; + goto done; + } + + if (BYTE (input, 2, NULL) == 'i' + && BYTE (input, 3, NULL) == 'm' + && BYTE (input, 4, NULL) == 'p' + && BYTE (input, 5, NULL) == 'o' + && BYTE (input, 6, NULL) == 'r' + && BYTE (input, 7, NULL) == 't') { + SKIP_CHARS (a_this, 1); + cr_tknzr_get_parsing_location + (a_this, &location) ; + SKIP_CHARS (a_this, 6); + status = cr_token_set_import_sym (token); + CHECK_PARSING_STATUS (status, TRUE); + cr_parsing_location_copy (&token->location, + &location) ; + goto done; + } + + if (BYTE (input, 2, NULL) == 'm' + && BYTE (input, 3, NULL) == 'e' + && BYTE (input, 4, NULL) == 'd' + && BYTE (input, 5, NULL) == 'i' + && BYTE (input, 6, NULL) == 'a') { + SKIP_CHARS (a_this, 1); + cr_tknzr_get_parsing_location (a_this, + &location) ; + SKIP_CHARS (a_this, 5); + status = cr_token_set_media_sym (token); + CHECK_PARSING_STATUS (status, TRUE); + cr_parsing_location_copy (&token->location, + &location) ; + goto done; + } + + if (BYTE (input, 2, NULL) == 'p' + && BYTE (input, 3, NULL) == 'a' + && BYTE (input, 4, NULL) == 'g' + && BYTE (input, 5, NULL) == 'e') { + SKIP_CHARS (a_this, 1); + cr_tknzr_get_parsing_location (a_this, + &location) ; + SKIP_CHARS (a_this, 4); + status = cr_token_set_page_sym (token); + CHECK_PARSING_STATUS (status, TRUE); + cr_parsing_location_copy (&token->location, + &location) ; + goto done; + } + status = cr_tknzr_parse_atkeyword (a_this, &str); + if (status == CR_OK) { + status = cr_token_set_atkeyword (token, str); + CHECK_PARSING_STATUS (status, TRUE); + if (str) { + cr_parsing_location_copy (&token->location, + &str->location) ; + } + goto done; + } + } + break; + + case 'u': + + if (BYTE (input, 2, NULL) == 'r' + && BYTE (input, 3, NULL) == 'l' + && BYTE (input, 4, NULL) == '(') { + CRString *str2 = NULL; + + status = cr_tknzr_parse_uri (a_this, &str2); + if (status == CR_OK) { + status = cr_token_set_uri (token, str2); + CHECK_PARSING_STATUS (status, TRUE); + if (str2) { + cr_parsing_location_copy (&token->location, + &str2->location) ; + } + goto done; + } + } + goto fallback; + break; + + case 'r': + if (BYTE (input, 2, NULL) == 'g' + && BYTE (input, 3, NULL) == 'b' + && BYTE (input, 4, NULL) == '(') { + status = cr_tknzr_parse_rgb (a_this, &rgb); + if (status == CR_OK && rgb) { + status = cr_token_set_rgb (token, rgb); + CHECK_PARSING_STATUS (status, TRUE); + if (rgb) { + cr_parsing_location_copy (&token->location, + &rgb->location) ; + } + rgb = NULL; + goto done; + } + + } + goto fallback; + break; + + case '<': + if (BYTE (input, 2, NULL) == '!' + && BYTE (input, 3, NULL) == '-' + && BYTE (input, 4, NULL) == '-') { + SKIP_CHARS (a_this, 1); + cr_tknzr_get_parsing_location (a_this, + &location) ; + SKIP_CHARS (a_this, 3); + status = cr_token_set_cdo (token); + CHECK_PARSING_STATUS (status, TRUE); + cr_parsing_location_copy (&token->location, + &location) ; + goto done; + } + break; + + case '-': + if (BYTE (input, 2, NULL) == '-' + && BYTE (input, 3, NULL) == '>') { + SKIP_CHARS (a_this, 1); + cr_tknzr_get_parsing_location (a_this, + &location) ; + SKIP_CHARS (a_this, 2); + status = cr_token_set_cdc (token); + CHECK_PARSING_STATUS (status, TRUE); + cr_parsing_location_copy (&token->location, + &location) ; + goto done; + } else { + status = cr_tknzr_parse_ident + (a_this, &str); + if (status == CR_OK) { + cr_token_set_ident + (token, str); + if (str) { + cr_parsing_location_copy (&token->location, + &str->location) ; + } + goto done; + } else { + goto parse_number; + } + } + break; + + case '~': + if (BYTE (input, 2, NULL) == '=') { + SKIP_CHARS (a_this, 1); + cr_tknzr_get_parsing_location (a_this, + &location) ; + SKIP_CHARS (a_this, 1); + status = cr_token_set_includes (token); + CHECK_PARSING_STATUS (status, TRUE); + cr_parsing_location_copy (&token->location, + &location) ; + goto done; + } + break; + + case '|': + if (BYTE (input, 2, NULL) == '=') { + SKIP_CHARS (a_this, 1); + cr_tknzr_get_parsing_location (a_this, + &location) ; + SKIP_CHARS (a_this, 1); + status = cr_token_set_dashmatch (token); + CHECK_PARSING_STATUS (status, TRUE); + cr_parsing_location_copy (&token->location, + &location) ; + goto done; + } + break; + + case '/': + if (BYTE (input, 2, NULL) == '*') { + status = cr_tknzr_parse_comment (a_this, &str); + + if (status == CR_OK) { + status = cr_token_set_comment (token, str); + str = NULL; + CHECK_PARSING_STATUS (status, TRUE); + if (str) { + cr_parsing_location_copy (&token->location, + &str->location) ; + } + goto done; + } + } + break ; + + case ';': + SKIP_CHARS (a_this, 1); + cr_tknzr_get_parsing_location (a_this, + &location) ; + status = cr_token_set_semicolon (token); + CHECK_PARSING_STATUS (status, TRUE); + cr_parsing_location_copy (&token->location, + &location) ; + goto done; + + case '{': + SKIP_CHARS (a_this, 1); + cr_tknzr_get_parsing_location (a_this, + &location) ; + status = cr_token_set_cbo (token); + CHECK_PARSING_STATUS (status, TRUE); + cr_tknzr_get_parsing_location (a_this, + &location) ; + goto done; + + case '}': + SKIP_CHARS (a_this, 1); + cr_tknzr_get_parsing_location (a_this, + &location) ; + status = cr_token_set_cbc (token); + CHECK_PARSING_STATUS (status, TRUE); + cr_parsing_location_copy (&token->location, + &location) ; + goto done; + + case '(': + SKIP_CHARS (a_this, 1); + cr_tknzr_get_parsing_location (a_this, + &location) ; + status = cr_token_set_po (token); + CHECK_PARSING_STATUS (status, TRUE); + cr_parsing_location_copy (&token->location, + &location) ; + goto done; + + case ')': + SKIP_CHARS (a_this, 1); + cr_tknzr_get_parsing_location (a_this, + &location) ; + status = cr_token_set_pc (token); + CHECK_PARSING_STATUS (status, TRUE); + cr_parsing_location_copy (&token->location, + &location) ; + goto done; + + case '[': + SKIP_CHARS (a_this, 1); + cr_tknzr_get_parsing_location (a_this, + &location) ; + status = cr_token_set_bo (token); + CHECK_PARSING_STATUS (status, TRUE); + cr_parsing_location_copy (&token->location, + &location) ; + goto done; + + case ']': + SKIP_CHARS (a_this, 1); + cr_tknzr_get_parsing_location (a_this, + &location) ; + status = cr_token_set_bc (token); + CHECK_PARSING_STATUS (status, TRUE); + cr_parsing_location_copy (&token->location, + &location) ; + goto done; + + case ' ': + case '\t': + case '\n': + case '\f': + case '\r': + { + guchar *start = NULL, + *end = NULL; + + status = cr_tknzr_parse_w (a_this, &start, + &end, &location); + if (status == CR_OK) { + status = cr_token_set_s (token); + CHECK_PARSING_STATUS (status, TRUE); + cr_tknzr_get_parsing_location (a_this, + &location) ; + goto done; + } + } + break; + + case '#': + { + status = cr_tknzr_parse_hash (a_this, &str); + if (status == CR_OK && str) { + status = cr_token_set_hash (token, str); + CHECK_PARSING_STATUS (status, TRUE); + if (str) { + cr_parsing_location_copy (&token->location, + &str->location) ; + } + str = NULL; + goto done; + } + } + break; + + case '\'': + case '"': + status = cr_tknzr_parse_string (a_this, &str); + if (status == CR_OK && str) { + status = cr_token_set_string (token, str); + CHECK_PARSING_STATUS (status, TRUE); + if (str) { + cr_parsing_location_copy (&token->location, + &str->location) ; + } + str = NULL; + goto done; + } + break; + + case '!': + status = cr_tknzr_parse_important (a_this, &location); + if (status == CR_OK) { + status = cr_token_set_important_sym (token); + CHECK_PARSING_STATUS (status, TRUE); + cr_parsing_location_copy (&token->location, + &location) ; + goto done; + } + break; + + case '0': + case '1': + case '2': + case '3': + case '4': + case '5': + case '6': + case '7': + case '8': + case '9': + case '.': + case '+': + /* '-' case is handled separately above for --> comments */ + parse_number: + { + CRNum *num = NULL; + + status = cr_tknzr_parse_num (a_this, &num); + if (status == CR_OK && num) { + next_bytes[0] = BYTE (input, 1, NULL); + next_bytes[1] = BYTE (input, 2, NULL); + next_bytes[2] = BYTE (input, 3, NULL); + next_bytes[3] = BYTE (input, 4, NULL); + + if (next_bytes[0] == 'e' + && next_bytes[1] == 'm') { + num->type = NUM_LENGTH_EM; + status = cr_token_set_ems (token, + num); + num = NULL; + SKIP_CHARS (a_this, 2); + } else if (next_bytes[0] == 'e' + && next_bytes[1] == 'x') { + num->type = NUM_LENGTH_EX; + status = cr_token_set_exs (token, + num); + num = NULL; + SKIP_CHARS (a_this, 2); + } else if (next_bytes[0] == 'p' + && next_bytes[1] == 'x') { + num->type = NUM_LENGTH_PX; + status = cr_token_set_length + (token, num, LENGTH_PX_ET); + num = NULL; + SKIP_CHARS (a_this, 2); + } else if (next_bytes[0] == 'c' + && next_bytes[1] == 'm') { + num->type = NUM_LENGTH_CM; + status = cr_token_set_length + (token, num, LENGTH_CM_ET); + num = NULL; + SKIP_CHARS (a_this, 2); + } else if (next_bytes[0] == 'm' + && next_bytes[1] == 'm') { + num->type = NUM_LENGTH_MM; + status = cr_token_set_length + (token, num, LENGTH_MM_ET); + num = NULL; + SKIP_CHARS (a_this, 2); + } else if (next_bytes[0] == 'i' + && next_bytes[1] == 'n') { + num->type = NUM_LENGTH_IN; + status = cr_token_set_length + (token, num, LENGTH_IN_ET); + num = NULL; + SKIP_CHARS (a_this, 2); + } else if (next_bytes[0] == 'p' + && next_bytes[1] == 't') { + num->type = NUM_LENGTH_PT; + status = cr_token_set_length + (token, num, LENGTH_PT_ET); + num = NULL; + SKIP_CHARS (a_this, 2); + } else if (next_bytes[0] == 'p' + && next_bytes[1] == 'c') { + num->type = NUM_LENGTH_PC; + status = cr_token_set_length + (token, num, LENGTH_PC_ET); + num = NULL; + SKIP_CHARS (a_this, 2); + } else if (next_bytes[0] == 'd' + && next_bytes[1] == 'e' + && next_bytes[2] == 'g') { + num->type = NUM_ANGLE_DEG; + status = cr_token_set_angle + (token, num, ANGLE_DEG_ET); + num = NULL; + SKIP_CHARS (a_this, 3); + } else if (next_bytes[0] == 'r' + && next_bytes[1] == 'a' + && next_bytes[2] == 'd') { + num->type = NUM_ANGLE_RAD; + status = cr_token_set_angle + (token, num, ANGLE_RAD_ET); + num = NULL; + SKIP_CHARS (a_this, 3); + } else if (next_bytes[0] == 'g' + && next_bytes[1] == 'r' + && next_bytes[2] == 'a' + && next_bytes[3] == 'd') { + num->type = NUM_ANGLE_GRAD; + status = cr_token_set_angle + (token, num, ANGLE_GRAD_ET); + num = NULL; + SKIP_CHARS (a_this, 4); + } else if (next_bytes[0] == 'm' + && next_bytes[1] == 's') { + num->type = NUM_TIME_MS; + status = cr_token_set_time + (token, num, TIME_MS_ET); + num = NULL; + SKIP_CHARS (a_this, 2); + } else if (next_bytes[0] == 's') { + num->type = NUM_TIME_S; + status = cr_token_set_time + (token, num, TIME_S_ET); + num = NULL; + SKIP_CHARS (a_this, 1); + } else if (next_bytes[0] == 'H' + && next_bytes[1] == 'z') { + num->type = NUM_FREQ_HZ; + status = cr_token_set_freq + (token, num, FREQ_HZ_ET); + num = NULL; + SKIP_CHARS (a_this, 2); + } else if (next_bytes[0] == 'k' + && next_bytes[1] == 'H' + && next_bytes[2] == 'z') { + num->type = NUM_FREQ_KHZ; + status = cr_token_set_freq + (token, num, FREQ_KHZ_ET); + num = NULL; + SKIP_CHARS (a_this, 3); + } else if (next_bytes[0] == '%') { + num->type = NUM_PERCENTAGE; + status = cr_token_set_percentage + (token, num); + num = NULL; + SKIP_CHARS (a_this, 1); + } else { + status = cr_tknzr_parse_ident (a_this, + &str); + if (status == CR_OK && str) { + num->type = NUM_UNKNOWN_TYPE; + status = cr_token_set_dimen + (token, num, str); + num = NULL; + CHECK_PARSING_STATUS (status, + TRUE); + str = NULL; + } else { + status = cr_token_set_number + (token, num); + num = NULL; + CHECK_PARSING_STATUS (status, CR_OK); + str = NULL; + } + } + if (token && token->u.num) { + cr_parsing_location_copy (&token->location, + &token->u.num->location) ; + } else { + status = CR_ERROR ; + } + goto done ; + } + } + break; + + default: + fallback: + /*process the fallback cases here */ + + if (next_char == '\\' + || (cr_utils_is_nonascii (next_bytes[0]) == TRUE) + || ((next_char >= 'a') && (next_char <= 'z')) + || ((next_char >= 'A') && (next_char <= 'Z'))) { + status = cr_tknzr_parse_ident (a_this, &str); + if (status == CR_OK && str) { + guint32 next_c = 0; + + status = cr_input_peek_char + (PRIVATE (a_this)->input, &next_c); + + if (status == CR_OK && next_c == '(') { + + SKIP_CHARS (a_this, 1); + status = cr_token_set_function + (token, str); + CHECK_PARSING_STATUS (status, TRUE); + /*ownership is transferred + *to token by cr_token_set_function. + */ + if (str) { + cr_parsing_location_copy (&token->location, + &str->location) ; + } + str = NULL; + } else { + status = cr_token_set_ident (token, + str); + CHECK_PARSING_STATUS (status, TRUE); + if (str) { + cr_parsing_location_copy (&token->location, + &str->location) ; + } + str = NULL; + } + goto done; + } else { + if (str) { + cr_string_destroy (str); + str = NULL; + } + } + } + break; + } + + READ_NEXT_CHAR (a_this, &next_char); + cr_tknzr_get_parsing_location (a_this, + &location) ; + status = cr_token_set_delim (token, next_char); + CHECK_PARSING_STATUS (status, TRUE); + cr_parsing_location_copy (&token->location, + &location) ; + done: + + if (status == CR_OK && token) { + *a_tk = token; + /* + *store the previous position input stream pos. + */ + memmove (&PRIVATE (a_this)->prev_pos, + &init_pos, sizeof (CRInputPos)); + return CR_OK; + } + + error: + if (token) { + cr_token_destroy (token); + token = NULL; + } + + if (str) { + cr_string_destroy (str); + str = NULL; + } + cr_tknzr_set_cur_pos (a_this, &init_pos); + return status; + +} + +enum CRStatus +cr_tknzr_parse_token (CRTknzr * a_this, enum CRTokenType a_type, + enum CRTokenExtraType a_et, gpointer a_res, + gpointer a_extra_res) +{ + enum CRStatus status = CR_OK; + CRToken *token = NULL; + + g_return_val_if_fail (a_this && PRIVATE (a_this) + && PRIVATE (a_this)->input + && a_res, CR_BAD_PARAM_ERROR); + + status = cr_tknzr_get_next_token (a_this, &token); + if (status != CR_OK) + return status; + if (token == NULL) + return CR_PARSING_ERROR; + + if (token->type == a_type) { + switch (a_type) { + case NO_TK: + case S_TK: + case CDO_TK: + case CDC_TK: + case INCLUDES_TK: + case DASHMATCH_TK: + case IMPORT_SYM_TK: + case PAGE_SYM_TK: + case MEDIA_SYM_TK: + case FONT_FACE_SYM_TK: + case CHARSET_SYM_TK: + case IMPORTANT_SYM_TK: + status = CR_OK; + break; + + case STRING_TK: + case IDENT_TK: + case HASH_TK: + case ATKEYWORD_TK: + case FUNCTION_TK: + case COMMENT_TK: + case URI_TK: + *((CRString **) a_res) = token->u.str; + token->u.str = NULL; + status = CR_OK; + break; + + case EMS_TK: + case EXS_TK: + case PERCENTAGE_TK: + case NUMBER_TK: + *((CRNum **) a_res) = token->u.num; + token->u.num = NULL; + status = CR_OK; + break; + + case LENGTH_TK: + case ANGLE_TK: + case TIME_TK: + case FREQ_TK: + if (token->extra_type == a_et) { + *((CRNum **) a_res) = token->u.num; + token->u.num = NULL; + status = CR_OK; + } + break; + + case DIMEN_TK: + *((CRNum **) a_res) = token->u.num; + if (a_extra_res == NULL) { + status = CR_BAD_PARAM_ERROR; + goto error; + } + + *((CRString **) a_extra_res) = token->dimen; + token->u.num = NULL; + token->dimen = NULL; + status = CR_OK; + break; + + case DELIM_TK: + *((guint32 *) a_res) = token->u.unichar; + status = CR_OK; + break; + + case UNICODERANGE_TK: + default: + status = CR_PARSING_ERROR; + break; + } + + cr_token_destroy (token); + token = NULL; + } else { + cr_tknzr_unget_token (a_this, token); + token = NULL; + status = CR_PARSING_ERROR; + } + + return status; + + error: + + if (token) { + cr_tknzr_unget_token (a_this, token); + token = NULL; + } + + return status; +} + +void +cr_tknzr_destroy (CRTknzr * a_this) +{ + g_return_if_fail (a_this); + + if (PRIVATE (a_this) && PRIVATE (a_this)->input) { + if (cr_input_unref (PRIVATE (a_this)->input) + == TRUE) { + PRIVATE (a_this)->input = NULL; + } + } + + if (PRIVATE (a_this)->token_cache) { + cr_token_destroy (PRIVATE (a_this)->token_cache); + PRIVATE (a_this)->token_cache = NULL; + } + + if (PRIVATE (a_this)) { + g_free (PRIVATE (a_this)); + PRIVATE (a_this) = NULL; + } + + g_free (a_this); +} diff --git a/src/st/croco/cr-tknzr.h b/src/st/croco/cr-tknzr.h new file mode 100644 index 0000000..13985b3 --- /dev/null +++ b/src/st/croco/cr-tknzr.h @@ -0,0 +1,115 @@ +/* -*- Mode: C; indent-tabs-mode:nil; c-basic-offset: 8-*- */ + +/* + * This file is part of The Croco Library + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of version 2.1 of the GNU Lesser General Public + * License as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 + * USA + * + * Author: Dodji Seketeli + * See COPYRIGHTS file for coypyright information. + */ + +/** + *@file + *The declaration of the #CRTknzr (tokenizer) + *class. + */ + +#ifndef __CR_TKNZR_H__ +#define __CR_TKNZR_H__ + +#include "cr-utils.h" +#include "cr-input.h" +#include "cr-token.h" + +G_BEGIN_DECLS + + +typedef struct _CRTknzr CRTknzr ; +typedef struct _CRTknzrPriv CRTknzrPriv ; + +/** + *The tokenizer is the class that knows + *about all the css token. Its main job is + *to return the next token found in the character + *input stream. + */ +struct _CRTknzr +{ + /*the private data of the tokenizer.*/ + CRTknzrPriv *priv ; +} ; + +CRTknzr * cr_tknzr_new (CRInput *a_input) ; + +CRTknzr * cr_tknzr_new_from_uri (const guchar *a_file_uri, + enum CREncoding a_enc) ; + +CRTknzr * cr_tknzr_new_from_buf (guchar *a_buf, gulong a_len, + enum CREncoding a_enc, + gboolean a_free_at_destroy) ; + +gboolean cr_tknzr_unref (CRTknzr *a_this) ; + +void cr_tknzr_ref (CRTknzr *a_this) ; + +enum CRStatus cr_tknzr_read_byte (CRTknzr *a_this, guchar *a_byte) ; + +enum CRStatus cr_tknzr_read_char (CRTknzr *a_this, guint32 *a_char); + +enum CRStatus cr_tknzr_peek_char (CRTknzr *a_this, guint32 *a_char) ; + +enum CRStatus cr_tknzr_peek_byte (CRTknzr *a_this, gulong a_offset, + guchar *a_byte) ; + +guchar cr_tknzr_peek_byte2 (CRTknzr *a_this, gulong a_offset, + gboolean *a_eof) ; + +enum CRStatus cr_tknzr_set_cur_pos (CRTknzr *a_this, CRInputPos *a_pos) ; + +glong cr_tknzr_get_nb_bytes_left (CRTknzr *a_this) ; + +enum CRStatus cr_tknzr_get_cur_pos (CRTknzr *a_this, CRInputPos *a_pos) ; + +enum CRStatus cr_tknzr_get_parsing_location (CRTknzr *a_this, + CRParsingLocation *a_loc) ; + +enum CRStatus cr_tknzr_seek_index (CRTknzr *a_this, + enum CRSeekPos a_origin, + gint a_pos) ; + +enum CRStatus cr_tknzr_get_cur_byte_addr (CRTknzr *a_this, guchar **a_addr) ; + + +enum CRStatus cr_tknzr_consume_chars (CRTknzr *a_this, guint32 a_char, + glong *a_nb_char) ; + +enum CRStatus cr_tknzr_get_next_token (CRTknzr *a_this, CRToken ** a_tk) ; + +enum CRStatus cr_tknzr_unget_token (CRTknzr *a_this, CRToken *a_token) ; + + +enum CRStatus cr_tknzr_parse_token (CRTknzr *a_this, enum CRTokenType a_type, + enum CRTokenExtraType a_et, gpointer a_res, + gpointer a_extra_res) ; +enum CRStatus cr_tknzr_set_input (CRTknzr *a_this, CRInput *a_input) ; + +enum CRStatus cr_tknzr_get_input (CRTknzr *a_this, CRInput **a_input) ; + +void cr_tknzr_destroy (CRTknzr *a_this) ; + +G_END_DECLS + +#endif /*__CR_TKZNR_H__*/ diff --git a/src/st/croco/cr-token.c b/src/st/croco/cr-token.c new file mode 100644 index 0000000..91dd632 --- /dev/null +++ b/src/st/croco/cr-token.c @@ -0,0 +1,636 @@ +/* -*- Mode: C; indent-tabs-mode:nil; c-basic-offset: 8-*- */ + +/* + * This file is part of The Croco Library + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of version 2.1 of the GNU Lesser General Public + * License as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 + * USA + * + * Author: Dodji Seketeli + * see COPYRIGHTS file for copyright information. + */ + +/** + *@file + *The definition of the #CRToken class. + *Abstracts a css2 token. + */ +#include <string.h> +#include "cr-token.h" + +/* + *TODO: write a CRToken::to_string() method. + */ + +/** + *Frees the attributes of the current instance + *of #CRtoken. + *@param a_this the current instance of #CRToken. + */ +static void +cr_token_clear (CRToken * a_this) +{ + g_return_if_fail (a_this); + + switch (a_this->type) { + case S_TK: + case CDO_TK: + case CDC_TK: + case INCLUDES_TK: + case DASHMATCH_TK: + case PAGE_SYM_TK: + case MEDIA_SYM_TK: + case FONT_FACE_SYM_TK: + case CHARSET_SYM_TK: + case IMPORT_SYM_TK: + case IMPORTANT_SYM_TK: + case SEMICOLON_TK: + case NO_TK: + case DELIM_TK: + case CBO_TK: + case CBC_TK: + case BO_TK: + case BC_TK: + break; + + case STRING_TK: + case IDENT_TK: + case HASH_TK: + case URI_TK: + case FUNCTION_TK: + case COMMENT_TK: + case ATKEYWORD_TK: + if (a_this->u.str) { + cr_string_destroy (a_this->u.str); + a_this->u.str = NULL; + } + break; + + case EMS_TK: + case EXS_TK: + case LENGTH_TK: + case ANGLE_TK: + case TIME_TK: + case FREQ_TK: + case PERCENTAGE_TK: + case NUMBER_TK: + case PO_TK: + case PC_TK: + if (a_this->u.num) { + cr_num_destroy (a_this->u.num); + a_this->u.num = NULL; + } + break; + + case DIMEN_TK: + if (a_this->u.num) { + cr_num_destroy (a_this->u.num); + a_this->u.num = NULL; + } + + if (a_this->dimen) { + cr_string_destroy (a_this->dimen); + a_this->dimen = NULL; + } + + break; + + case RGB_TK: + if (a_this->u.rgb) { + cr_rgb_destroy (a_this->u.rgb) ; + a_this->u.rgb = NULL ; + } + break ; + + case UNICODERANGE_TK: + /*not supported yet. */ + break; + + default: + cr_utils_trace_info ("I don't know how to clear this token\n") ; + break; + } + + a_this->type = NO_TK; +} + +/** + *Default constructor of + *the #CRToken class. + *@return the newly built instance of #CRToken. + */ +CRToken * +cr_token_new (void) +{ + CRToken *result = NULL; + + result = g_try_malloc (sizeof (CRToken)); + + if (result == NULL) { + cr_utils_trace_info ("Out of memory"); + return NULL; + } + + memset (result, 0, sizeof (CRToken)); + + return result; +} + +/** + *Sets the type of curren instance of + *#CRToken to 'S_TK' (S in the css2 spec) + *@param a_this the current instance of #CRToken. + *@return CR_OK upon successful completion, an error + *code otherwise. + */ +enum CRStatus +cr_token_set_s (CRToken * a_this) +{ + g_return_val_if_fail (a_this, CR_BAD_PARAM_ERROR); + + cr_token_clear (a_this); + + a_this->type = S_TK; + + return CR_OK; +} + +/** + *Sets the type of the current instance of + *#CRToken to 'CDO_TK' (CDO as said by the css2 spec) + *@param a_this the current instance of #CRToken. + *@return CR_OK upon successful completion, an error + *code otherwise. + */ +enum CRStatus +cr_token_set_cdo (CRToken * a_this) +{ + g_return_val_if_fail (a_this, CR_BAD_PARAM_ERROR); + + cr_token_clear (a_this); + + a_this->type = CDO_TK; + + return CR_OK; +} + +/** + *Sets the type of the current token to + *CDC_TK (CDC as said by the css2 spec). + *@param a_this the current instance of #CRToken. + *@return CR_OK upon successful completion, an error + *code otherwise. + */ +enum CRStatus +cr_token_set_cdc (CRToken * a_this) +{ + g_return_val_if_fail (a_this, CR_BAD_PARAM_ERROR); + + cr_token_clear (a_this); + + a_this->type = CDC_TK; + + return CR_OK; +} + +/** + *Sets the type of the current instance of + *#CRToken to INCLUDES_TK (INCLUDES as said by the css2 spec). + *@param a_this the current instance of #CRToken. + *@return CR_OK upon successful completion, an error + *code otherwise. + */ +enum CRStatus +cr_token_set_includes (CRToken * a_this) +{ + g_return_val_if_fail (a_this, CR_BAD_PARAM_ERROR); + + cr_token_clear (a_this); + + a_this->type = INCLUDES_TK; + + return CR_OK; +} + +/** + *Sets the type of the current instance of + *#CRToken to DASHMATCH_TK (DASHMATCH as said by the css2 spec). + *@param a_this the current instance of #CRToken. + *@return CR_OK upon successful completion, an error + *code otherwise. + */ +enum CRStatus +cr_token_set_dashmatch (CRToken * a_this) +{ + g_return_val_if_fail (a_this, CR_BAD_PARAM_ERROR); + + cr_token_clear (a_this); + + a_this->type = DASHMATCH_TK; + + return CR_OK; +} + +enum CRStatus +cr_token_set_comment (CRToken * a_this, CRString * a_str) +{ + g_return_val_if_fail (a_this, CR_BAD_PARAM_ERROR); + + cr_token_clear (a_this); + a_this->type = COMMENT_TK; + a_this->u.str = a_str ; + return CR_OK; +} + +enum CRStatus +cr_token_set_string (CRToken * a_this, CRString * a_str) +{ + g_return_val_if_fail (a_this, CR_BAD_PARAM_ERROR); + + cr_token_clear (a_this); + + a_this->type = STRING_TK; + + a_this->u.str = a_str ; + + return CR_OK; +} + +enum CRStatus +cr_token_set_ident (CRToken * a_this, CRString * a_ident) +{ + g_return_val_if_fail (a_this, CR_BAD_PARAM_ERROR); + + cr_token_clear (a_this); + a_this->type = IDENT_TK; + a_this->u.str = a_ident; + return CR_OK; +} + + +enum CRStatus +cr_token_set_function (CRToken * a_this, CRString * a_fun_name) +{ + g_return_val_if_fail (a_this, + CR_BAD_PARAM_ERROR); + + cr_token_clear (a_this); + a_this->type = FUNCTION_TK; + a_this->u.str = a_fun_name; + return CR_OK; +} + +enum CRStatus +cr_token_set_hash (CRToken * a_this, CRString * a_hash) +{ + g_return_val_if_fail (a_this, CR_BAD_PARAM_ERROR); + + cr_token_clear (a_this); + a_this->type = HASH_TK; + a_this->u.str = a_hash; + + return CR_OK; +} + +enum CRStatus +cr_token_set_rgb (CRToken * a_this, CRRgb * a_rgb) +{ + g_return_val_if_fail (a_this, CR_BAD_PARAM_ERROR); + + cr_token_clear (a_this); + a_this->type = RGB_TK; + a_this->u.rgb = a_rgb; + + return CR_OK; +} + +enum CRStatus +cr_token_set_import_sym (CRToken * a_this) +{ + g_return_val_if_fail (a_this, CR_BAD_PARAM_ERROR); + + cr_token_clear (a_this); + + a_this->type = IMPORT_SYM_TK; + + return CR_OK; +} + +enum CRStatus +cr_token_set_page_sym (CRToken * a_this) +{ + g_return_val_if_fail (a_this, CR_BAD_PARAM_ERROR); + + cr_token_clear (a_this); + + a_this->type = PAGE_SYM_TK; + + return CR_OK; +} + +enum CRStatus +cr_token_set_media_sym (CRToken * a_this) +{ + g_return_val_if_fail (a_this, CR_BAD_PARAM_ERROR); + + cr_token_clear (a_this); + + a_this->type = MEDIA_SYM_TK; + + return CR_OK; +} + +enum CRStatus +cr_token_set_font_face_sym (CRToken * a_this) +{ + g_return_val_if_fail (a_this, CR_BAD_PARAM_ERROR); + + cr_token_clear (a_this); + a_this->type = FONT_FACE_SYM_TK; + + return CR_OK; +} + +enum CRStatus +cr_token_set_charset_sym (CRToken * a_this) +{ + g_return_val_if_fail (a_this, CR_BAD_PARAM_ERROR); + + cr_token_clear (a_this); + a_this->type = CHARSET_SYM_TK; + + return CR_OK; +} + +enum CRStatus +cr_token_set_atkeyword (CRToken * a_this, CRString * a_atname) +{ + g_return_val_if_fail (a_this, CR_BAD_PARAM_ERROR); + + cr_token_clear (a_this); + a_this->type = ATKEYWORD_TK; + a_this->u.str = a_atname; + return CR_OK; +} + +enum CRStatus +cr_token_set_important_sym (CRToken * a_this) +{ + g_return_val_if_fail (a_this, CR_BAD_PARAM_ERROR); + cr_token_clear (a_this); + a_this->type = IMPORTANT_SYM_TK; + return CR_OK; +} + +enum CRStatus +cr_token_set_ems (CRToken * a_this, CRNum * a_num) +{ + g_return_val_if_fail (a_this, CR_BAD_PARAM_ERROR); + cr_token_clear (a_this); + a_this->type = EMS_TK; + a_this->u.num = a_num; + return CR_OK; +} + +enum CRStatus +cr_token_set_exs (CRToken * a_this, CRNum * a_num) +{ + g_return_val_if_fail (a_this, CR_BAD_PARAM_ERROR); + cr_token_clear (a_this); + a_this->type = EXS_TK; + a_this->u.num = a_num; + return CR_OK; +} + +enum CRStatus +cr_token_set_length (CRToken * a_this, CRNum * a_num, + enum CRTokenExtraType a_et) +{ + g_return_val_if_fail (a_this, CR_BAD_PARAM_ERROR); + + cr_token_clear (a_this); + + a_this->type = LENGTH_TK; + a_this->extra_type = a_et; + a_this->u.num = a_num; + + return CR_OK; +} + +enum CRStatus +cr_token_set_angle (CRToken * a_this, CRNum * a_num, + enum CRTokenExtraType a_et) +{ + g_return_val_if_fail (a_this, CR_BAD_PARAM_ERROR); + + cr_token_clear (a_this); + + a_this->type = ANGLE_TK; + a_this->extra_type = a_et; + a_this->u.num = a_num; + + return CR_OK; +} + +enum CRStatus +cr_token_set_time (CRToken * a_this, CRNum * a_num, + enum CRTokenExtraType a_et) +{ + g_return_val_if_fail (a_this, CR_BAD_PARAM_ERROR); + + cr_token_clear (a_this); + + a_this->type = TIME_TK; + a_this->extra_type = a_et; + a_this->u.num = a_num; + + return CR_OK; +} + +enum CRStatus +cr_token_set_freq (CRToken * a_this, CRNum * a_num, + enum CRTokenExtraType a_et) +{ + g_return_val_if_fail (a_this, CR_BAD_PARAM_ERROR); + + cr_token_clear (a_this); + + a_this->type = FREQ_TK; + a_this->extra_type = a_et; + a_this->u.num = a_num; + + return CR_OK; +} + +enum CRStatus +cr_token_set_dimen (CRToken * a_this, CRNum * a_num, + CRString * a_dim) +{ + g_return_val_if_fail (a_this, CR_BAD_PARAM_ERROR); + cr_token_clear (a_this); + a_this->type = DIMEN_TK; + a_this->u.num = a_num; + a_this->dimen = a_dim; + return CR_OK; + +} + +enum CRStatus +cr_token_set_percentage (CRToken * a_this, CRNum * a_num) +{ + g_return_val_if_fail (a_this, CR_BAD_PARAM_ERROR); + + cr_token_clear (a_this); + + a_this->type = PERCENTAGE_TK; + a_this->u.num = a_num; + + return CR_OK; +} + +enum CRStatus +cr_token_set_number (CRToken * a_this, CRNum * a_num) +{ + g_return_val_if_fail (a_this, CR_BAD_PARAM_ERROR); + + cr_token_clear (a_this); + + a_this->type = NUMBER_TK; + a_this->u.num = a_num; + return CR_OK; +} + +enum CRStatus +cr_token_set_uri (CRToken * a_this, CRString * a_uri) +{ + g_return_val_if_fail (a_this, CR_BAD_PARAM_ERROR); + + cr_token_clear (a_this); + + a_this->type = URI_TK; + a_this->u.str = a_uri; + + return CR_OK; +} + +enum CRStatus +cr_token_set_delim (CRToken * a_this, guint32 a_char) +{ + g_return_val_if_fail (a_this, CR_BAD_PARAM_ERROR); + + cr_token_clear (a_this); + + a_this->type = DELIM_TK; + a_this->u.unichar = a_char; + + return CR_OK; +} + +enum CRStatus +cr_token_set_semicolon (CRToken * a_this) +{ + g_return_val_if_fail (a_this, CR_BAD_PARAM_ERROR); + + cr_token_clear (a_this); + + a_this->type = SEMICOLON_TK; + + return CR_OK; +} + +enum CRStatus +cr_token_set_cbo (CRToken * a_this) +{ + g_return_val_if_fail (a_this, CR_BAD_PARAM_ERROR); + + cr_token_clear (a_this); + + a_this->type = CBO_TK; + + return CR_OK; +} + +enum CRStatus +cr_token_set_cbc (CRToken * a_this) +{ + g_return_val_if_fail (a_this, CR_BAD_PARAM_ERROR); + + cr_token_clear (a_this); + + a_this->type = CBC_TK; + + return CR_OK; +} + +enum CRStatus +cr_token_set_po (CRToken * a_this) +{ + g_return_val_if_fail (a_this, CR_BAD_PARAM_ERROR); + + cr_token_clear (a_this); + + a_this->type = PO_TK; + + return CR_OK; +} + +enum CRStatus +cr_token_set_pc (CRToken * a_this) +{ + g_return_val_if_fail (a_this, CR_BAD_PARAM_ERROR); + + cr_token_clear (a_this); + + a_this->type = PC_TK; + + return CR_OK; +} + +enum CRStatus +cr_token_set_bo (CRToken * a_this) +{ + g_return_val_if_fail (a_this, CR_BAD_PARAM_ERROR); + + cr_token_clear (a_this); + + a_this->type = BO_TK; + + return CR_OK; +} + +enum CRStatus +cr_token_set_bc (CRToken * a_this) +{ + g_return_val_if_fail (a_this, CR_BAD_PARAM_ERROR); + + cr_token_clear (a_this); + + a_this->type = BC_TK; + + return CR_OK; +} + +/** + *The destructor of the #CRToken class. + *@param a_this the current instance of #CRToken. + */ +void +cr_token_destroy (CRToken * a_this) +{ + g_return_if_fail (a_this); + + cr_token_clear (a_this); + + g_free (a_this); +} diff --git a/src/st/croco/cr-token.h b/src/st/croco/cr-token.h new file mode 100644 index 0000000..f1257b7 --- /dev/null +++ b/src/st/croco/cr-token.h @@ -0,0 +1,212 @@ +/* -*- Mode: C; indent-tabs-mode:nil; c-basic-offset: 8-*- */ + +/* + * This file is part of The Croco Library + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of version 2.1 of the GNU Lesser General Public + * License as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 + * USA + * + * Author: Dodji Seketeli + * See COPYRIGHTS file for copyright information. + */ + +#ifndef __CR_TOKEN_H__ +#define __CR_TOKEN_H__ + +#include "cr-utils.h" +#include "cr-input.h" +#include "cr-num.h" +#include "cr-rgb.h" +#include "cr-string.h" +#include "cr-parsing-location.h" + +G_BEGIN_DECLS + +enum CRTokenType +{ + NO_TK, + S_TK, + CDO_TK, + CDC_TK, + INCLUDES_TK, + DASHMATCH_TK, + COMMENT_TK, + STRING_TK, + IDENT_TK, + HASH_TK, + IMPORT_SYM_TK, + PAGE_SYM_TK, + MEDIA_SYM_TK, + FONT_FACE_SYM_TK, + CHARSET_SYM_TK, + ATKEYWORD_TK, + IMPORTANT_SYM_TK, + EMS_TK, + EXS_TK, + LENGTH_TK, + ANGLE_TK, + TIME_TK, + FREQ_TK, + DIMEN_TK, + PERCENTAGE_TK, + NUMBER_TK, + RGB_TK, + URI_TK, + FUNCTION_TK, + UNICODERANGE_TK, + SEMICOLON_TK, + CBO_TK, /*opening curly bracket*/ + CBC_TK, /*closing curly bracket*/ + PO_TK, /*opening parenthesis*/ + PC_TK, /*closing parenthesis*/ + BO_TK, /*opening bracket*/ + BC_TK, /*closing bracket*/ + DELIM_TK +} ; + +enum CRTokenExtraType +{ + NO_ET = 0, + LENGTH_PX_ET, + LENGTH_CM_ET, + LENGTH_MM_ET, + LENGTH_IN_ET, + LENGTH_PT_ET, + LENGTH_PC_ET, + ANGLE_DEG_ET, + ANGLE_RAD_ET, + ANGLE_GRAD_ET, + TIME_MS_ET, + TIME_S_ET, + FREQ_HZ_ET, + FREQ_KHZ_ET +} ; + +typedef struct _CRToken CRToken ; + +/** + *This class abstracts a css2 token. + */ +struct _CRToken +{ + enum CRTokenType type ; + enum CRTokenExtraType extra_type ; + CRInputPos pos ; + + union + { + CRString *str ; + CRRgb *rgb ; + CRNum *num ; + guint32 unichar ; + } u ; + + CRString * dimen ; + CRParsingLocation location ; +} ; + +CRToken* cr_token_new (void) ; + +enum CRStatus cr_token_set_s (CRToken *a_this) ; + +enum CRStatus cr_token_set_cdo (CRToken *a_this) ; + +enum CRStatus cr_token_set_cdc (CRToken *a_this) ; + +enum CRStatus cr_token_set_includes (CRToken *a_this) ; + +enum CRStatus cr_token_set_dashmatch (CRToken *a_this) ; + +enum CRStatus cr_token_set_comment (CRToken *a_this, CRString *a_str) ; + +enum CRStatus cr_token_set_string (CRToken *a_this, CRString *a_str) ; + +enum CRStatus cr_token_set_ident (CRToken *a_this, CRString * a_ident) ; + +enum CRStatus cr_token_set_hash (CRToken *a_this, CRString *a_hash) ; + +enum CRStatus cr_token_set_rgb (CRToken *a_this, CRRgb *a_rgb) ; + +enum CRStatus cr_token_set_import_sym (CRToken *a_this) ; + +enum CRStatus cr_token_set_page_sym (CRToken *a_this) ; + +enum CRStatus cr_token_set_media_sym (CRToken *a_this) ; + +enum CRStatus cr_token_set_font_face_sym (CRToken *a_this) ; + +enum CRStatus cr_token_set_charset_sym (CRToken *a_this) ; + +enum CRStatus cr_token_set_atkeyword (CRToken *a_this, CRString *a_atname) ; + +enum CRStatus cr_token_set_important_sym (CRToken *a_this) ; + +enum CRStatus cr_token_set_ems (CRToken *a_this, CRNum *a_num) ; + +enum CRStatus cr_token_set_exs (CRToken *a_this, CRNum *a_num) ; + +enum CRStatus cr_token_set_length (CRToken *a_this, CRNum *a_num, + enum CRTokenExtraType a_et) ; + +enum CRStatus cr_token_set_angle (CRToken *a_this, CRNum *a_num, + enum CRTokenExtraType a_et) ; + +enum CRStatus cr_token_set_time (CRToken *a_this, CRNum *a_num, + enum CRTokenExtraType a_et) ; + +enum CRStatus cr_token_set_freq (CRToken *a_this, CRNum *a_num, + enum CRTokenExtraType a_et) ; + +enum CRStatus cr_token_set_dimen (CRToken *a_this, CRNum *a_num, + CRString *a_dim) ; + +enum CRStatus cr_token_set_percentage (CRToken *a_this, CRNum *a_num) ; + +enum CRStatus cr_token_set_number (CRToken *a_this, CRNum *a_num) ; + +enum CRStatus cr_token_set_uri (CRToken *a_this, CRString *a_uri) ; + +enum CRStatus cr_token_set_function (CRToken *a_this, + CRString *a_fun_name) ; + +enum CRStatus cr_token_set_bc (CRToken *a_this) ; + +enum CRStatus cr_token_set_bo (CRToken *a_this) ; + +enum CRStatus cr_token_set_po (CRToken *a_this) ; + +enum CRStatus cr_token_set_pc (CRToken *a_this) ; + +enum CRStatus cr_token_set_cbc (CRToken *a_this) ; + +enum CRStatus cr_token_set_cbo (CRToken *a_this) ; + +enum CRStatus cr_token_set_semicolon (CRToken *a_this) ; + +enum CRStatus cr_token_set_delim (CRToken *a_this, guint32 a_char) ; + + +/* + enum CRStatus + cr_token_set_unicoderange (CRToken *a_this, + CRUnicodeRange *a_range) ; +*/ + +void +cr_token_destroy (CRToken *a_this) ; + + +G_END_DECLS + +#endif /*__CR_TOKEN_H__*/ diff --git a/src/st/croco/cr-utils.c b/src/st/croco/cr-utils.c new file mode 100644 index 0000000..5fafade --- /dev/null +++ b/src/st/croco/cr-utils.c @@ -0,0 +1,1330 @@ +/* -*- Mode: C; indent-tabs-mode: nil; c-basic-offset: 8 -*- */ + +/* + * This file is part of The Croco Library + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of version 2.1 of the GNU Lesser General Public + * License as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 + * USA + * + * Author: Dodji Seketeli + * See COPYRIGHTS file for copyright information. + */ + +#include "cr-utils.h" +#include "cr-string.h" + +/** + *@file: + *Some misc utility functions used + *in the libcroco. + *Note that troughout this file I will + *refer to the CSS SPECIFICATIONS DOCUMENTATION + *written by the w3c guys. You can find that document + *at http://www.w3.org/TR/REC-CSS2/ . + */ + +/**************************** + *Encoding transformations and + *encoding helpers + ****************************/ + +/* + *Here is the correspondence between the ucs-4 charactere codes + *and there matching utf-8 encoding pattern as described by RFC 2279: + * + *UCS-4 range (hex.) UTF-8 octet sequence (binary) + *------------------ ----------------------------- + *0000 0000-0000 007F 0xxxxxxx + *0000 0080-0000 07FF 110xxxxx 10xxxxxx + *0000 0800-0000 FFFF 1110xxxx 10xxxxxx 10xxxxxx + *0001 0000-001F FFFF 11110xxx 10xxxxxx 10xxxxxx 10xxxxxx + *0020 0000-03FF FFFF 111110xx 10xxxxxx 10xxxxxx 10xxxxxx 10xxxxxx + *0400 0000-7FFF FFFF 1111110x 10xxxxxx ... 10xxxxxx + */ + +/** + *Given an utf8 string buffer, calculates + *the length of this string if it was encoded + *in ucs4. + *@param a_in_start a pointer to the beginning of + *the input utf8 string. + *@param a_in_end a pointre to the end of the input + *utf8 string (points to the last byte of the buffer) + *@param a_len out parameter the calculated length. + *@return CR_OK upon successful completion, an error code + *otherwise. + */ +enum CRStatus +cr_utils_utf8_str_len_as_ucs4 (const guchar * a_in_start, + const guchar * a_in_end, gulong * a_len) +{ + guchar *byte_ptr = NULL; + gint len = 0; + + /* + *to store the final decoded + *unicode char + */ + guint c = 0; + + g_return_val_if_fail (a_in_start && a_in_end && a_len, + CR_BAD_PARAM_ERROR); + *a_len = 0; + + for (byte_ptr = (guchar *) a_in_start; + byte_ptr <= a_in_end; byte_ptr++) { + gint nb_bytes_2_decode = 0; + + if (*byte_ptr <= 0x7F) { + /* + *7 bits long char + *encoded over 1 byte: + * 0xxx xxxx + */ + c = *byte_ptr; + nb_bytes_2_decode = 1; + + } else if ((*byte_ptr & 0xE0) == 0xC0) { + /* + *up to 11 bits long char. + *encoded over 2 bytes: + *110x xxxx 10xx xxxx + */ + c = *byte_ptr & 0x1F; + nb_bytes_2_decode = 2; + + } else if ((*byte_ptr & 0xF0) == 0xE0) { + /* + *up to 16 bit long char + *encoded over 3 bytes: + *1110 xxxx 10xx xxxx 10xx xxxx + */ + c = *byte_ptr & 0x0F; + nb_bytes_2_decode = 3; + + } else if ((*byte_ptr & 0xF8) == 0xF0) { + /* + *up to 21 bits long char + *encoded over 4 bytes: + *1111 0xxx 10xx xxxx 10xx xxxx 10xx xxxx + */ + c = *byte_ptr & 0x7; + nb_bytes_2_decode = 4; + + } else if ((*byte_ptr & 0xFC) == 0xF8) { + /* + *up to 26 bits long char + *encoded over 5 bytes. + *1111 10xx 10xx xxxx 10xx xxxx + *10xx xxxx 10xx xxxx + */ + c = *byte_ptr & 3; + nb_bytes_2_decode = 5; + + } else if ((*byte_ptr & 0xFE) == 0xFC) { + /* + *up to 31 bits long char + *encoded over 6 bytes: + *1111 110x 10xx xxxx 10xx xxxx + *10xx xxxx 10xx xxxx 10xx xxxx + */ + c = *byte_ptr & 1; + nb_bytes_2_decode = 6; + + } else { + /* + *BAD ENCODING + */ + return CR_ENCODING_ERROR; + } + + /* + *Go and decode the remaining byte(s) + *(if any) to get the current character. + */ + for (; nb_bytes_2_decode > 1; nb_bytes_2_decode--) { + /*decode the next byte */ + byte_ptr++; + + /*byte pattern must be: 10xx xxxx */ + if ((*byte_ptr & 0xC0) != 0x80) { + return CR_ENCODING_ERROR; + } + + c = (c << 6) | (*byte_ptr & 0x3F); + } + + len++; + } + + *a_len = len; + + return CR_OK; +} + +/** + *Given an ucs4 string, this function + *returns the size (in bytes) this string + *would have occupied if it was encoded in utf-8. + *@param a_in_start a pointer to the beginning of the input + *buffer. + *@param a_in_end a pointer to the end of the input buffer. + *@param a_len out parameter. The computed length. + *@return CR_OK upon successful completion, an error code otherwise. + */ +enum CRStatus +cr_utils_ucs4_str_len_as_utf8 (const guint32 * a_in_start, + const guint32 * a_in_end, gulong * a_len) +{ + gint len = 0; + guint32 *char_ptr = NULL; + + g_return_val_if_fail (a_in_start && a_in_end && a_len, + CR_BAD_PARAM_ERROR); + + for (char_ptr = (guint32 *) a_in_start; + char_ptr <= a_in_end; char_ptr++) { + if (*char_ptr <= 0x7F) { + /*the utf-8 char would take 1 byte */ + len += 1; + } else if (*char_ptr <= 0x7FF) { + /*the utf-8 char would take 2 bytes */ + len += 2; + } else if (*char_ptr <= 0xFFFF) { + len += 3; + } else if (*char_ptr <= 0x1FFFFF) { + len += 4; + } else if (*char_ptr <= 0x3FFFFFF) { + len += 5; + } else if (*char_ptr <= 0x7FFFFFFF) { + len += 6; + } + } + + *a_len = len; + return CR_OK; +} + +/** + *Given an ucsA string, this function + *returns the size (in bytes) this string + *would have occupied if it was encoded in utf-8. + *@param a_in_start a pointer to the beginning of the input + *buffer. + *@param a_in_end a pointer to the end of the input buffer. + *@param a_len out parameter. The computed length. + *@return CR_OK upon successful completion, an error code otherwise. + */ +enum CRStatus +cr_utils_ucs1_str_len_as_utf8 (const guchar * a_in_start, + const guchar * a_in_end, gulong * a_len) +{ + gint len = 0; + guchar *char_ptr = NULL; + + g_return_val_if_fail (a_in_start && a_in_end && a_len, + CR_BAD_PARAM_ERROR); + + for (char_ptr = (guchar *) a_in_start; + char_ptr <= a_in_end; char_ptr++) { + if (*char_ptr <= 0x7F) { + /*the utf-8 char would take 1 byte */ + len += 1; + } else { + /*the utf-8 char would take 2 bytes */ + len += 2; + } + } + + *a_len = len; + return CR_OK; +} + +/** + *Converts an utf8 buffer into an ucs4 buffer. + * + *@param a_in the input utf8 buffer to convert. + *@param a_in_len in/out parameter. The size of the + *input buffer to convert. After return, this parameter contains + *the actual number of bytes consumed. + *@param a_out the output converted ucs4 buffer. Must be allocated by + *the caller. + *@param a_out_len in/out parameter. The size of the output buffer. + *If this size is actually smaller than the real needed size, the function + *just converts what it can and returns a success status. After return, + *this param points to the actual number of characters decoded. + *@return CR_OK upon successful completion, an error code otherwise. + */ +enum CRStatus +cr_utils_utf8_to_ucs4 (const guchar * a_in, + gulong * a_in_len, guint32 * a_out, gulong * a_out_len) +{ + gulong in_len = 0, + out_len = 0, + in_index = 0, + out_index = 0; + enum CRStatus status = CR_OK; + + /* + *to store the final decoded + *unicode char + */ + guint c = 0; + + g_return_val_if_fail (a_in && a_in_len + && a_out && a_out_len, CR_BAD_PARAM_ERROR); + + if (*a_in_len < 1) { + status = CR_OK; + goto end; + } + + in_len = *a_in_len; + out_len = *a_out_len; + + for (in_index = 0, out_index = 0; + (in_index < in_len) && (out_index < out_len); + in_index++, out_index++) { + gint nb_bytes_2_decode = 0; + + if (a_in[in_index] <= 0x7F) { + /* + *7 bits long char + *encoded over 1 byte: + * 0xxx xxxx + */ + c = a_in[in_index]; + nb_bytes_2_decode = 1; + + } else if ((a_in[in_index] & 0xE0) == 0xC0) { + /* + *up to 11 bits long char. + *encoded over 2 bytes: + *110x xxxx 10xx xxxx + */ + c = a_in[in_index] & 0x1F; + nb_bytes_2_decode = 2; + + } else if ((a_in[in_index] & 0xF0) == 0xE0) { + /* + *up to 16 bit long char + *encoded over 3 bytes: + *1110 xxxx 10xx xxxx 10xx xxxx + */ + c = a_in[in_index] & 0x0F; + nb_bytes_2_decode = 3; + + } else if ((a_in[in_index] & 0xF8) == 0xF0) { + /* + *up to 21 bits long char + *encoded over 4 bytes: + *1111 0xxx 10xx xxxx 10xx xxxx 10xx xxxx + */ + c = a_in[in_index] & 0x7; + nb_bytes_2_decode = 4; + + } else if ((a_in[in_index] & 0xFC) == 0xF8) { + /* + *up to 26 bits long char + *encoded over 5 bytes. + *1111 10xx 10xx xxxx 10xx xxxx + *10xx xxxx 10xx xxxx + */ + c = a_in[in_index] & 3; + nb_bytes_2_decode = 5; + + } else if ((a_in[in_index] & 0xFE) == 0xFC) { + /* + *up to 31 bits long char + *encoded over 6 bytes: + *1111 110x 10xx xxxx 10xx xxxx + *10xx xxxx 10xx xxxx 10xx xxxx + */ + c = a_in[in_index] & 1; + nb_bytes_2_decode = 6; + + } else { + /*BAD ENCODING */ + goto end; + } + + /* + *Go and decode the remaining byte(s) + *(if any) to get the current character. + */ + for (; nb_bytes_2_decode > 1; nb_bytes_2_decode--) { + /*decode the next byte */ + in_index++; + + /*byte pattern must be: 10xx xxxx */ + if ((a_in[in_index] & 0xC0) != 0x80) { + goto end; + } + + c = (c << 6) | (a_in[in_index] & 0x3F); + } + + /* + *The decoded ucs4 char is now + *in c. + */ + + /************************ + *Some security tests + ***********************/ + + /*be sure c is a char */ + if (c == 0xFFFF || c == 0xFFFE) + goto end; + + /*be sure c is inferior to the max ucs4 char value */ + if (c > 0x10FFFF) + goto end; + + /* + *c must be less than UTF16 "lower surrogate begin" + *or higher than UTF16 "High surrogate end" + */ + if (c >= 0xD800 && c <= 0xDFFF) + goto end; + + /*Avoid characters that equals zero */ + if (c == 0) + goto end; + + a_out[out_index] = c; + } + + end: + *a_out_len = out_index + 1; + *a_in_len = in_index + 1; + + return status; +} + +/** + *Reads a character from an utf8 buffer. + *Actually decode the next character code (unicode character code) + *and returns it. + *@param a_in the starting address of the utf8 buffer. + *@param a_in_len the length of the utf8 buffer. + *@param a_out output parameter. The resulting read char. + *@param a_consumed the number of the bytes consumed to + *decode the returned character code. + *@return CR_OK upon successful completion, an error code otherwise. + */ +enum CRStatus +cr_utils_read_char_from_utf8_buf (const guchar * a_in, + gulong a_in_len, + guint32 * a_out, gulong * a_consumed) +{ + gulong in_index = 0, + nb_bytes_2_decode = 0; + enum CRStatus status = CR_OK; + + /* + *to store the final decoded + *unicode char + */ + guint32 c = 0; + + g_return_val_if_fail (a_in && a_out && a_out + && a_consumed, CR_BAD_PARAM_ERROR); + + if (a_in_len < 1) { + status = CR_OK; + goto end; + } + + if (*a_in <= 0x7F) { + /* + *7 bits long char + *encoded over 1 byte: + * 0xxx xxxx + */ + c = *a_in; + nb_bytes_2_decode = 1; + + } else if ((*a_in & 0xE0) == 0xC0) { + /* + *up to 11 bits long char. + *encoded over 2 bytes: + *110x xxxx 10xx xxxx + */ + c = *a_in & 0x1F; + nb_bytes_2_decode = 2; + + } else if ((*a_in & 0xF0) == 0xE0) { + /* + *up to 16 bit long char + *encoded over 3 bytes: + *1110 xxxx 10xx xxxx 10xx xxxx + */ + c = *a_in & 0x0F; + nb_bytes_2_decode = 3; + + } else if ((*a_in & 0xF8) == 0xF0) { + /* + *up to 21 bits long char + *encoded over 4 bytes: + *1111 0xxx 10xx xxxx 10xx xxxx 10xx xxxx + */ + c = *a_in & 0x7; + nb_bytes_2_decode = 4; + + } else if ((*a_in & 0xFC) == 0xF8) { + /* + *up to 26 bits long char + *encoded over 5 bytes. + *1111 10xx 10xx xxxx 10xx xxxx + *10xx xxxx 10xx xxxx + */ + c = *a_in & 3; + nb_bytes_2_decode = 5; + + } else if ((*a_in & 0xFE) == 0xFC) { + /* + *up to 31 bits long char + *encoded over 6 bytes: + *1111 110x 10xx xxxx 10xx xxxx + *10xx xxxx 10xx xxxx 10xx xxxx + */ + c = *a_in & 1; + nb_bytes_2_decode = 6; + + } else { + /*BAD ENCODING */ + goto end; + } + + if (nb_bytes_2_decode > a_in_len) { + status = CR_END_OF_INPUT_ERROR; + goto end; + } + + /* + *Go and decode the remaining byte(s) + *(if any) to get the current character. + */ + for (in_index = 1; in_index < nb_bytes_2_decode; in_index++) { + /*byte pattern must be: 10xx xxxx */ + if ((a_in[in_index] & 0xC0) != 0x80) { + goto end; + } + + c = (c << 6) | (a_in[in_index] & 0x3F); + } + + /* + *The decoded ucs4 char is now + *in c. + */ + + /************************ + *Some security tests + ***********************/ + + /*be sure c is a char */ + if (c == 0xFFFF || c == 0xFFFE) + goto end; + + /*be sure c is inferior to the max ucs4 char value */ + if (c > 0x10FFFF) + goto end; + + /* + *c must be less than UTF16 "lower surrogate begin" + *or higher than UTF16 "High surrogate end" + */ + if (c >= 0xD800 && c <= 0xDFFF) + goto end; + + /*Avoid characters that equals zero */ + if (c == 0) + goto end; + + *a_out = c; + + end: + *a_consumed = nb_bytes_2_decode; + + return status; +} + +/** + * + */ +enum CRStatus +cr_utils_utf8_str_len_as_ucs1 (const guchar * a_in_start, + const guchar * a_in_end, gulong * a_len) +{ + /* + *Note: this function can be made shorter + *but it considers all the cases of the utf8 encoding + *to ease further extensions ... + */ + + guchar *byte_ptr = NULL; + gint len = 0; + + /* + *to store the final decoded + *unicode char + */ + guint c = 0; + + g_return_val_if_fail (a_in_start && a_in_end && a_len, + CR_BAD_PARAM_ERROR); + *a_len = 0; + + for (byte_ptr = (guchar *) a_in_start; + byte_ptr <= a_in_end; byte_ptr++) { + gint nb_bytes_2_decode = 0; + + if (*byte_ptr <= 0x7F) { + /* + *7 bits long char + *encoded over 1 byte: + * 0xxx xxxx + */ + c = *byte_ptr; + nb_bytes_2_decode = 1; + + } else if ((*byte_ptr & 0xE0) == 0xC0) { + /* + *up to 11 bits long char. + *encoded over 2 bytes: + *110x xxxx 10xx xxxx + */ + c = *byte_ptr & 0x1F; + nb_bytes_2_decode = 2; + + } else if ((*byte_ptr & 0xF0) == 0xE0) { + /* + *up to 16 bit long char + *encoded over 3 bytes: + *1110 xxxx 10xx xxxx 10xx xxxx + */ + c = *byte_ptr & 0x0F; + nb_bytes_2_decode = 3; + + } else if ((*byte_ptr & 0xF8) == 0xF0) { + /* + *up to 21 bits long char + *encoded over 4 bytes: + *1111 0xxx 10xx xxxx 10xx xxxx 10xx xxxx + */ + c = *byte_ptr & 0x7; + nb_bytes_2_decode = 4; + + } else if ((*byte_ptr & 0xFC) == 0xF8) { + /* + *up to 26 bits long char + *encoded over 5 bytes. + *1111 10xx 10xx xxxx 10xx xxxx + *10xx xxxx 10xx xxxx + */ + c = *byte_ptr & 3; + nb_bytes_2_decode = 5; + + } else if ((*byte_ptr & 0xFE) == 0xFC) { + /* + *up to 31 bits long char + *encoded over 6 bytes: + *1111 110x 10xx xxxx 10xx xxxx + *10xx xxxx 10xx xxxx 10xx xxxx + */ + c = *byte_ptr & 1; + nb_bytes_2_decode = 6; + + } else { + /* + *BAD ENCODING + */ + return CR_ENCODING_ERROR; + } + + /* + *Go and decode the remaining byte(s) + *(if any) to get the current character. + */ + for (; nb_bytes_2_decode > 1; nb_bytes_2_decode--) { + /*decode the next byte */ + byte_ptr++; + + /*byte pattern must be: 10xx xxxx */ + if ((*byte_ptr & 0xC0) != 0x80) { + return CR_ENCODING_ERROR; + } + + c = (c << 6) | (*byte_ptr & 0x3F); + } + + /* + *The decoded ucs4 char is now + *in c. + */ + + if (c <= 0xFF) { /*Add other conditions to support + *other char sets (ucs2, ucs3, ucs4). + */ + len++; + } else { + /*the char is too long to fit + *into the supposed charset len. + */ + return CR_ENCODING_ERROR; + } + } + + *a_len = len; + + return CR_OK; +} + +/** + *Converts an utf8 string into an ucs4 string. + *@param a_in the input string to convert. + *@param a_in_len in/out parameter. The length of the input + *string. After return, points to the actual number of bytes + *consumed. This can be useful to debug the input stream in case + *of encoding error. + *@param a_out out parameter. Points to the output string. It is allocated + *by this function and must be freed by the caller. + *@param a_out_len out parameter. The length of the output string. + *@return CR_OK upon successful completion, an error code otherwise. + * + */ +enum CRStatus +cr_utils_utf8_str_to_ucs4 (const guchar * a_in, + gulong * a_in_len, + guint32 ** a_out, gulong * a_out_len) +{ + enum CRStatus status = CR_OK; + + g_return_val_if_fail (a_in && a_in_len + && a_out && a_out_len, CR_BAD_PARAM_ERROR); + + status = cr_utils_utf8_str_len_as_ucs4 (a_in, + &a_in[*a_in_len - 1], + a_out_len); + + g_return_val_if_fail (status == CR_OK, status); + + *a_out = g_malloc0 (*a_out_len * sizeof (guint32)); + + status = cr_utils_utf8_to_ucs4 (a_in, a_in_len, *a_out, a_out_len); + + return status; +} + +/** + *Converts an ucs4 buffer into an utf8 buffer. + * + *@param a_in the input ucs4 buffer to convert. + *@param a_in_len in/out parameter. The size of the + *input buffer to convert. After return, this parameter contains + *the actual number of characters consumed. + *@param a_out the output converted utf8 buffer. Must be allocated by + *the caller. + *@param a_out_len in/out parameter. The size of the output buffer. + *If this size is actually smaller than the real needed size, the function + *just converts what it can and returns a success status. After return, + *this param points to the actual number of bytes in the buffer. + *@return CR_OK upon successful completion, an error code otherwise. + */ +enum CRStatus +cr_utils_ucs4_to_utf8 (const guint32 * a_in, + gulong * a_in_len, guchar * a_out, gulong * a_out_len) +{ + gulong in_len = 0, + in_index = 0, + out_index = 0; + enum CRStatus status = CR_OK; + + g_return_val_if_fail (a_in && a_in_len && a_out && a_out_len, + CR_BAD_PARAM_ERROR); + + if (*a_in_len < 1) { + status = CR_OK; + goto end; + } + + in_len = *a_in_len; + + for (in_index = 0; in_index < in_len; in_index++) { + /* + *FIXME: return whenever we encounter forbidden char values. + */ + + if (a_in[in_index] <= 0x7F) { + a_out[out_index] = a_in[in_index]; + out_index++; + } else if (a_in[in_index] <= 0x7FF) { + a_out[out_index] = (0xC0 | (a_in[in_index] >> 6)); + a_out[out_index + 1] = + (0x80 | (a_in[in_index] & 0x3F)); + out_index += 2; + } else if (a_in[in_index] <= 0xFFFF) { + a_out[out_index] = (0xE0 | (a_in[in_index] >> 12)); + a_out[out_index + 1] = + (0x80 | ((a_in[in_index] >> 6) & 0x3F)); + a_out[out_index + 2] = + (0x80 | (a_in[in_index] & 0x3F)); + out_index += 3; + } else if (a_in[in_index] <= 0x1FFFFF) { + a_out[out_index] = (0xF0 | (a_in[in_index] >> 18)); + a_out[out_index + 1] + = (0x80 | ((a_in[in_index] >> 12) & 0x3F)); + a_out[out_index + 2] + = (0x80 | ((a_in[in_index] >> 6) & 0x3F)); + a_out[out_index + 3] + = (0x80 | (a_in[in_index] & 0x3F)); + out_index += 4; + } else if (a_in[in_index] <= 0x3FFFFFF) { + a_out[out_index] = (0xF8 | (a_in[in_index] >> 24)); + a_out[out_index + 1] = + (0x80 | (a_in[in_index] >> 18)); + a_out[out_index + 2] + = (0x80 | ((a_in[in_index] >> 12) & 0x3F)); + a_out[out_index + 3] + = (0x80 | ((a_in[in_index] >> 6) & 0x3F)); + a_out[out_index + 4] + = (0x80 | (a_in[in_index] & 0x3F)); + out_index += 5; + } else if (a_in[in_index] <= 0x7FFFFFFF) { + a_out[out_index] = (0xFC | (a_in[in_index] >> 30)); + a_out[out_index + 1] = + (0x80 | (a_in[in_index] >> 24)); + a_out[out_index + 2] + = (0x80 | ((a_in[in_index] >> 18) & 0x3F)); + a_out[out_index + 3] + = (0x80 | ((a_in[in_index] >> 12) & 0x3F)); + a_out[out_index + 4] + = (0x80 | ((a_in[in_index] >> 6) & 0x3F)); + a_out[out_index + 4] + = (0x80 | (a_in[in_index] & 0x3F)); + out_index += 6; + } else { + status = CR_ENCODING_ERROR; + goto end; + } + } /*end for */ + + end: + *a_in_len = in_index + 1; + *a_out_len = out_index + 1; + + return status; +} + +/** + *Converts an ucs4 string into an utf8 string. + *@param a_in the input string to convert. + *@param a_in_len in/out parameter. The length of the input + *string. After return, points to the actual number of characters + *consumed. This can be useful to debug the input string in case + *of encoding error. + *@param a_out out parameter. Points to the output string. It is allocated + *by this function and must be freed by the caller. + *@param a_out_len out parameter. The length (in bytes) of the output string. + *@return CR_OK upon successful completion, an error code otherwise. + */ +enum CRStatus +cr_utils_ucs4_str_to_utf8 (const guint32 * a_in, + gulong * a_in_len, + guchar ** a_out, gulong * a_out_len) +{ + enum CRStatus status = CR_OK; + + g_return_val_if_fail (a_in && a_in_len && a_out + && a_out_len, CR_BAD_PARAM_ERROR); + + status = cr_utils_ucs4_str_len_as_utf8 (a_in, + &a_in[*a_out_len - 1], + a_out_len); + + g_return_val_if_fail (status == CR_OK, status); + + status = cr_utils_ucs4_to_utf8 (a_in, a_in_len, *a_out, a_out_len); + + return status; +} + +/** + *Converts an ucs1 buffer into an utf8 buffer. + *The caller must know the size of the resulting buffer and + *allocate it prior to calling this function. + * + *@param a_in the input ucs1 buffer. + * + *@param a_in_len in/out parameter. The length of the input buffer. + *After return, points to the number of bytes actually consumed even + *in case of encoding error. + * + *@param a_out out parameter. The output utf8 converted buffer. + * + *@param a_out_len in/out parameter. The size of the output buffer. + *If the output buffer size is shorter than the actual needed size, + *this function just convert what it can. + * + *@return CR_OK upon successful completion, an error code otherwise. + * + */ +enum CRStatus +cr_utils_ucs1_to_utf8 (const guchar * a_in, + gulong * a_in_len, guchar * a_out, gulong * a_out_len) +{ + gulong out_index = 0, + in_index = 0, + in_len = 0, + out_len = 0; + enum CRStatus status = CR_OK; + + g_return_val_if_fail (a_in && a_in_len + && a_out_len, + CR_BAD_PARAM_ERROR); + + if (*a_in_len == 0) { + *a_out_len = 0 ; + return status; + } + g_return_val_if_fail (a_out, CR_BAD_PARAM_ERROR) ; + + in_len = *a_in_len; + out_len = *a_out_len; + + for (in_index = 0, out_index = 0; + (in_index < in_len) && (out_index < out_len); in_index++) { + /* + *FIXME: return whenever we encounter forbidden char values. + */ + + if (a_in[in_index] <= 0x7F) { + a_out[out_index] = a_in[in_index]; + out_index++; + } else { + a_out[out_index] = (0xC0 | (a_in[in_index] >> 6)); + a_out[out_index + 1] = + (0x80 | (a_in[in_index] & 0x3F)); + out_index += 2; + } + } /*end for */ + + *a_in_len = in_index; + *a_out_len = out_index; + + return status; +} + +/** + *Converts an ucs1 string into an utf8 string. + *@param a_in_start the beginning of the input string to convert. + *@param a_in_end the end of the input string to convert. + *@param a_out out parameter. The converted string. + *@param a_out out parameter. The length of the converted string. + *@return CR_OK upon successful completion, an error code otherwise. + * + */ +enum CRStatus +cr_utils_ucs1_str_to_utf8 (const guchar * a_in, + gulong * a_in_len, + guchar ** a_out, gulong * a_out_len) +{ + gulong out_len = 0; + enum CRStatus status = CR_OK; + + g_return_val_if_fail (a_in && a_in_len && a_out + && a_out_len, CR_BAD_PARAM_ERROR); + + if (*a_in_len < 1) { + *a_out_len = 0; + *a_out = NULL; + return CR_OK; + } + + status = cr_utils_ucs1_str_len_as_utf8 (a_in, &a_in[*a_in_len - 1], + &out_len); + + g_return_val_if_fail (status == CR_OK, status); + + *a_out = g_malloc0 (out_len); + + status = cr_utils_ucs1_to_utf8 (a_in, a_in_len, *a_out, &out_len); + + *a_out_len = out_len; + + return status; +} + +/** + *Converts an utf8 buffer into an ucs1 buffer. + *The caller must know the size of the resulting + *converted buffer, and allocated it prior to calling this + *function. + * + *@param a_in the input utf8 buffer to convert. + * + *@param a_in_len in/out parameter. The size of the input utf8 buffer. + *After return, points to the number of bytes consumed + *by the function even in case of encoding error. + * + *@param a_out out parameter. Points to the resulting buffer. + *Must be allocated by the caller. If the size of a_out is shorter + *than its required size, this function converts what it can and return + *a successful status. + * + *@param a_out_len in/out parameter. The size of the output buffer. + *After return, points to the number of bytes consumed even in case of + *encoding error. + * + *@return CR_OK upon successful completion, an error code otherwise. + */ +enum CRStatus +cr_utils_utf8_to_ucs1 (const guchar * a_in, + gulong * a_in_len, guchar * a_out, gulong * a_out_len) +{ + gulong in_index = 0, + out_index = 0, + in_len = 0, + out_len = 0; + enum CRStatus status = CR_OK; + + /* + *to store the final decoded + *unicode char + */ + guint32 c = 0; + + g_return_val_if_fail (a_in && a_in_len + && a_out && a_out_len, CR_BAD_PARAM_ERROR); + + if (*a_in_len < 1) { + goto end; + } + + in_len = *a_in_len; + out_len = *a_out_len; + + for (in_index = 0, out_index = 0; + (in_index < in_len) && (out_index < out_len); + in_index++, out_index++) { + gint nb_bytes_2_decode = 0; + + if (a_in[in_index] <= 0x7F) { + /* + *7 bits long char + *encoded over 1 byte: + * 0xxx xxxx + */ + c = a_in[in_index]; + nb_bytes_2_decode = 1; + + } else if ((a_in[in_index] & 0xE0) == 0xC0) { + /* + *up to 11 bits long char. + *encoded over 2 bytes: + *110x xxxx 10xx xxxx + */ + c = a_in[in_index] & 0x1F; + nb_bytes_2_decode = 2; + + } else if ((a_in[in_index] & 0xF0) == 0xE0) { + /* + *up to 16 bit long char + *encoded over 3 bytes: + *1110 xxxx 10xx xxxx 10xx xxxx + */ + c = a_in[in_index] & 0x0F; + nb_bytes_2_decode = 3; + + } else if ((a_in[in_index] & 0xF8) == 0xF0) { + /* + *up to 21 bits long char + *encoded over 4 bytes: + *1111 0xxx 10xx xxxx 10xx xxxx 10xx xxxx + */ + c = a_in[in_index] & 0x7; + nb_bytes_2_decode = 4; + + } else if ((a_in[in_index] & 0xFC) == 0xF8) { + /* + *up to 26 bits long char + *encoded over 5 bytes. + *1111 10xx 10xx xxxx 10xx xxxx + *10xx xxxx 10xx xxxx + */ + c = a_in[in_index] & 3; + nb_bytes_2_decode = 5; + + } else if ((a_in[in_index] & 0xFE) == 0xFC) { + /* + *up to 31 bits long char + *encoded over 6 bytes: + *1111 110x 10xx xxxx 10xx xxxx + *10xx xxxx 10xx xxxx 10xx xxxx + */ + c = a_in[in_index] & 1; + nb_bytes_2_decode = 6; + + } else { + /*BAD ENCODING */ + status = CR_ENCODING_ERROR; + goto end; + } + + /* + *Go and decode the remaining byte(s) + *(if any) to get the current character. + */ + if (in_index + nb_bytes_2_decode - 1 >= in_len) { + goto end; + } + + for (; nb_bytes_2_decode > 1; nb_bytes_2_decode--) { + /*decode the next byte */ + in_index++; + + /*byte pattern must be: 10xx xxxx */ + if ((a_in[in_index] & 0xC0) != 0x80) { + status = CR_ENCODING_ERROR; + goto end; + } + + c = (c << 6) | (a_in[in_index] & 0x3F); + } + + /* + *The decoded ucs4 char is now + *in c. + */ + + if (c > 0xFF) { + status = CR_ENCODING_ERROR; + goto end; + } + + a_out[out_index] = c; + } + + end: + *a_out_len = out_index; + *a_in_len = in_index; + + return status; +} + +/** + *Converts an utf8 buffer into an + *ucs1 buffer. + *@param a_in_start the start of the input buffer. + *@param a_in_end the end of the input buffer. + *@param a_out out parameter. The resulting converted ucs4 buffer. + *Must be freed by the caller. + *@param a_out_len out parameter. The length of the converted buffer. + *@return CR_OK upon successful completion, an error code otherwise. + *Note that out parameters are valid if and only if this function + *returns CR_OK. + */ +enum CRStatus +cr_utils_utf8_str_to_ucs1 (const guchar * a_in, + gulong * a_in_len, + guchar ** a_out, gulong * a_out_len) +{ + enum CRStatus status = CR_OK; + + g_return_val_if_fail (a_in && a_in_len + && a_out && a_out_len, CR_BAD_PARAM_ERROR); + + if (*a_in_len < 1) { + *a_out_len = 0; + *a_out = NULL; + return CR_OK; + } + + status = cr_utils_utf8_str_len_as_ucs4 (a_in, &a_in[*a_in_len - 1], + a_out_len); + + g_return_val_if_fail (status == CR_OK, status); + + *a_out = g_malloc0 (*a_out_len * sizeof (guint32)); + + status = cr_utils_utf8_to_ucs1 (a_in, a_in_len, *a_out, a_out_len); + return status; +} + +/***************************************** + *CSS basic types identification utilities + *****************************************/ + +/** + *Returns TRUE if a_char is a white space as + *defined in the css spec in chap 4.1.1. + * + *white-space ::= ' '| \t|\r|\n|\f + * + *@param a_char the character to test. + *return TRUE if is a white space, false otherwise. + */ +gboolean +cr_utils_is_white_space (guint32 a_char) +{ + switch (a_char) { + case ' ': + case '\t': + case '\r': + case '\n': + case '\f': + return TRUE; + break; + default: + return FALSE; + } +} + +/** + *Returns true if the character is a newline + *as defined in the css spec in the chap 4.1.1. + * + *nl ::= \n|\r\n|\r|\f + * + *@param a_char the character to test. + *@return TRUE if the character is a newline, FALSE otherwise. + */ +gboolean +cr_utils_is_newline (guint32 a_char) +{ + switch (a_char) { + case '\n': + case '\r': + case '\f': + return TRUE; + break; + default: + return FALSE; + } +} + +/** + *returns TRUE if the char is part of an hexa num char: + *i.e hexa_char ::= [0-9A-F] + */ +gboolean +cr_utils_is_hexa_char (guint32 a_char) +{ + if ((a_char >= '0' && a_char <= '9') + || (a_char >= 'A' && a_char <= 'F')) { + return TRUE; + } + return FALSE; +} + +/** + *Returns true if the character is a nonascii + *character (as defined in the css spec chap 4.1.1): + * + *nonascii ::= [^\0-\177] + * + *@param a_char the character to test. + *@return TRUE if the character is a nonascii char, + *FALSE otherwise. + */ +gboolean +cr_utils_is_nonascii (guint32 a_char) +{ + if (a_char <= 177) { + return FALSE; + } + + return TRUE; +} + +/** + *Dumps a character a_nb times on a file. + *@param a_char the char to dump + *@param a_fp the destination file pointer + *@param a_nb the number of times a_char is to be dumped. + */ +void +cr_utils_dump_n_chars (guchar a_char, FILE * a_fp, glong a_nb) +{ + glong i = 0; + + for (i = 0; i < a_nb; i++) { + fprintf (a_fp, "%c", a_char); + } +} + +void +cr_utils_dump_n_chars2 (guchar a_char, GString * a_string, glong a_nb) +{ + glong i = 0; + + g_return_if_fail (a_string); + + for (i = 0; i < a_nb; i++) { + g_string_append_printf (a_string, "%c", a_char); + } +} + +/** + *Duplicates a list of GString instances. + *@return the duplicated list of GString instances or NULL if + *something bad happened. + *@param a_list_of_strings the list of strings to be duplicated. + */ +GList * +cr_utils_dup_glist_of_string (GList const * a_list_of_strings) +{ + GList const *cur = NULL; + GList *result = NULL; + + g_return_val_if_fail (a_list_of_strings, NULL); + + for (cur = a_list_of_strings; cur; cur = cur->next) { + GString *str = NULL; + + str = g_string_new_len (((GString *) cur->data)->str, + ((GString *) cur->data)->len); + if (str) + result = g_list_append (result, str); + } + + return result; +} + +/** + *Duplicate a GList where the GList::data is a CRString. + *@param a_list_of_strings the list to duplicate + *@return the duplicated list, or NULL if something bad + *happened. + */ +GList * +cr_utils_dup_glist_of_cr_string (GList const * a_list_of_strings) +{ + GList const *cur = NULL; + GList *result = NULL; + + g_return_val_if_fail (a_list_of_strings, NULL); + + for (cur = a_list_of_strings; cur; cur = cur->next) { + CRString *str = NULL; + + str = cr_string_dup ((CRString const *) cur->data) ; + if (str) + result = g_list_append (result, str); + } + + return result; +} diff --git a/src/st/croco/cr-utils.h b/src/st/croco/cr-utils.h new file mode 100644 index 0000000..54aa249 --- /dev/null +++ b/src/st/croco/cr-utils.h @@ -0,0 +1,246 @@ +/* -*- Mode: C; indent-tabs-mode: nil; c-basic-offset: 8 -*- */ + +/* + * This file is part of The Croco Library + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of version 2.1 of the GNU Lesser General Public + * License as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 + * USA + * + * Author: Dodji Seketeli + * Look at file COPYRIGHTS for copyright information + */ + +#ifndef __CR_DEFS_H__ +#define __CR_DEFS_H__ + +#include <stdio.h> +#include <glib.h> +#include "libcroco-config.h" + +G_BEGIN_DECLS + +/** + *@file + *The Croco library basic types definitions + *And global definitions. + */ + +/** + *The status type returned + *by the methods of the croco library. + */ +enum CRStatus { + CR_OK, + CR_BAD_PARAM_ERROR, + CR_INSTANCIATION_FAILED_ERROR, + CR_UNKNOWN_TYPE_ERROR, + CR_UNKNOWN_PROP_ERROR, + CR_UNKNOWN_PROP_VAL_ERROR, + CR_UNEXPECTED_POSITION_SCHEME, + CR_START_OF_INPUT_ERROR, + CR_END_OF_INPUT_ERROR, + CR_OUTPUT_TOO_SHORT_ERROR, + CR_INPUT_TOO_SHORT_ERROR, + CR_OUT_OF_BOUNDS_ERROR, + CR_EMPTY_PARSER_INPUT_ERROR, + CR_ENCODING_ERROR, + CR_ENCODING_NOT_FOUND_ERROR, + CR_PARSING_ERROR, + CR_SYNTAX_ERROR, + CR_NO_ROOT_NODE_ERROR, + CR_NO_TOKEN, + CR_OUT_OF_MEMORY_ERROR, + CR_PSEUDO_CLASS_SEL_HANDLER_NOT_FOUND_ERROR, + CR_BAD_PSEUDO_CLASS_SEL_HANDLER_ERROR, + CR_ERROR, + CR_FILE_NOT_FOUND_ERROR, + CR_VALUE_NOT_FOUND_ERROR +} ; + +/** + *Values used by + *cr_input_seek_position() ; + */ +enum CRSeekPos { + CR_SEEK_CUR, + CR_SEEK_BEGIN, + CR_SEEK_END +} ; + +/** + *Encoding values. + */ +enum CREncoding +{ + CR_UCS_4 = 1/*Must be not NULL*/, + CR_UCS_1, + CR_ISO_8859_1, + CR_ASCII, + CR_UTF_8, + CR_UTF_16, + CR_AUTO/*should be the last one*/ +} ; + + + + +#define CROCO_LOG_DOMAIN "LIBCROCO" + +#ifdef __GNUC__ +#define cr_utils_trace(a_log_level, a_msg) \ +g_log (CROCO_LOG_DOMAIN, \ + G_LOG_LEVEL_CRITICAL, \ + "file %s: line %d (%s): %s\n", \ + __FILE__, \ + __LINE__, \ + __PRETTY_FUNCTION__, \ + a_msg) +#else /*__GNUC__*/ + +#define cr_utils_trace(a_log_level, a_msg) \ +g_log (CROCO_LOG_DOMAIN, \ + G_LOG_LEVEL_CRITICAL, \ + "file %s: line %d: %s\n", \ + __FILE__, \ + __LINE__, \ + a_msg) +#endif + +/** + *Traces an info message. + *The file, line and enclosing function + *of the message will be automatically + *added to the message. + *@param a_msg the msg to trace. + */ +#define cr_utils_trace_info(a_msg) \ +cr_utils_trace (G_LOG_LEVEL_INFO, a_msg) + +/** + *Trace a debug message. + *The file, line and enclosing function + *of the message will be automatically + *added to the message. + *@param a_msg the msg to trace. + */ +#define cr_utils_trace_debug(a_msg) \ +cr_utils_trace (G_LOG_LEVEL_DEBUG, a_msg) ; + + +/**************************** + *Encoding transformations and + *encoding helpers + ****************************/ + +enum CRStatus +cr_utils_read_char_from_utf8_buf (const guchar * a_in, gulong a_in_len, + guint32 *a_out, gulong *a_consumed) ; + +enum CRStatus +cr_utils_ucs1_to_utf8 (const guchar *a_in, gulong *a_in_len, + guchar *a_out, gulong *a_out_len) ; + +enum CRStatus +cr_utils_utf8_to_ucs1 (const guchar * a_in, gulong * a_in_len, + guchar *a_out, gulong *a_out_len) ; + +enum CRStatus +cr_utils_ucs4_to_utf8 (const guint32 *a_in, gulong *a_in_len, + guchar *a_out, gulong *a_out_len) ; + +enum CRStatus +cr_utils_utf8_str_len_as_ucs4 (const guchar *a_in_start, + const guchar *a_in_end, + gulong *a_len) ; +enum CRStatus +cr_utils_ucs1_str_len_as_utf8 (const guchar *a_in_start, + const guchar *a_in_end, + gulong *a_len) ; +enum CRStatus +cr_utils_utf8_str_len_as_ucs1 (const guchar *a_in_start, + const guchar *a_in_end, + gulong *a_len) ; +enum CRStatus +cr_utils_ucs4_str_len_as_utf8 (const guint32 *a_in_start, + const guint32 *a_in_end, + gulong *a_len) ; + +enum CRStatus +cr_utils_ucs1_str_to_utf8 (const guchar *a_in_start, + gulong *a_in_len, + guchar **a_out, + gulong *a_len) ; + +enum CRStatus +cr_utils_utf8_str_to_ucs1 (const guchar * a_in_start, + gulong * a_in_len, + guchar **a_out, + gulong *a_out_len) ; + +enum CRStatus +cr_utils_utf8_to_ucs4 (const guchar * a_in, + gulong * a_in_len, + guint32 *a_out, gulong *a_out_len) ; + +enum CRStatus +cr_utils_ucs4_str_to_utf8 (const guint32 *a_in, + gulong *a_in_len, + guchar **a_out, gulong *a_out_len) ; + +enum CRStatus +cr_utils_utf8_str_to_ucs4 (const guchar * a_in, + gulong *a_in_len, + guint32 **a_out, + gulong *a_out_len) ; + + +/***************************************** + *CSS basic types identification utilities + *****************************************/ + +gboolean +cr_utils_is_newline (guint32 a_char) ; + +gboolean +cr_utils_is_white_space (guint32 a_char) ; + +gboolean +cr_utils_is_nonascii (guint32 a_char) ; + +gboolean +cr_utils_is_hexa_char (guint32 a_char) ; + + +/********************************** + *Miscellaneous utility functions + ***********************************/ + +void +cr_utils_dump_n_chars (guchar a_char, + FILE *a_fp, + glong a_nb) ; + +void +cr_utils_dump_n_chars2 (guchar a_char, + GString *a_string, + glong a_nb) ; +GList * +cr_utils_dup_glist_of_string (GList const *a_list) ; + +GList * +cr_utils_dup_glist_of_cr_string (GList const * a_list_of_strings) ; + +G_END_DECLS + +#endif /*__CR_DEFS_H__*/ diff --git a/src/st/croco/libcroco-config.h b/src/st/croco/libcroco-config.h new file mode 100644 index 0000000..1ffb758 --- /dev/null +++ b/src/st/croco/libcroco-config.h @@ -0,0 +1,13 @@ +#ifndef LIBCROCO_VERSION_NUMBER +#define LIBCROCO_VERSION_NUMBER 612 +#endif + +#ifndef LIBCROCO_VERSION +#define LIBCROCO_VERSION "0.6.12" +#endif + +#ifndef G_DISABLE_CHECKS +#if 0 +#define G_DISABLE_CHECKS 0 +#endif +#endif diff --git a/src/st/croco/libcroco.h b/src/st/croco/libcroco.h new file mode 100644 index 0000000..6187a7c --- /dev/null +++ b/src/st/croco/libcroco.h @@ -0,0 +1,42 @@ +/* + * This file is part of The Croco Library + * + * Copyright (C) 2002-2003 Dodji Seketeli <dodji@seketeli.org> + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of version 2.1 of the GNU Lesser General Public + * License as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 + * USA + */ + +#ifndef __LIBCROCO_H__ +#define __LIBCROCO_H__ + +#include "libcroco-config.h" + +#include "cr-utils.h" +#include "cr-pseudo.h" +#include "cr-term.h" +#include "cr-attr-sel.h" +#include "cr-simple-sel.h" +#include "cr-selector.h" +#include "cr-enc-handler.h" +#include "cr-doc-handler.h" +#include "cr-input.h" +#include "cr-parser.h" +#include "cr-statement.h" +#include "cr-stylesheet.h" +#include "cr-om-parser.h" +#include "cr-prop-list.h" +#include "cr-string.h" + +#endif /*__LIBCROCO_H__*/ |