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-rw-r--r--src/st/croco/cr-om-parser.c1142
1 files changed, 1142 insertions, 0 deletions
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;
+ }
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-26 06:10:24 +0000