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-rw-r--r--src/st/croco/cr-attr-sel.c235
1 files changed, 235 insertions, 0 deletions
diff --git a/src/st/croco/cr-attr-sel.c b/src/st/croco/cr-attr-sel.c
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+/* -*- 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 *) str_buf->str;
+ 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;
+ }
+}
+