Adding upstream version 43.9.upstream/43.9upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

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;
+        }
+}