separated the library into two projects. Libcroco is now the combination

2004-01-24  Dodji Seketeli  <dodji@gnome.org>

* all: separated the library into two projects. Libcroco
is now the combination of the parser and the selection engine.
A new project is born: sewfox. It is basically the
xml rendering/layout engine.
Libcroco now needs libxml2 and glib only.
Sewfox need libgnomecanvas2.

1 files changed, 239 insertions, 0 deletions

diff --git a/src/cr-attr-sel.c b/src/cr-attr-sel.c
new file mode 100644
index 0000000..9c1f2e6
--- /dev/null
+++ b/src/cr-attr-sel.c
@@ -0,0 +1,239 @@
+/* -*- 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 <stdio.h>
+#include "cr-attr-sel.h"
+
+/**
+ *@file
+ *The class that 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] .
+ */
+
+
+/**
+ *The constructor of #CRAttrSel.
+ *@return the newly allocated instance
+ *of #CRAttrSel.
+ */
+CRAttrSel *
+cr_attr_sel_new (void)
+{
+	CRAttrSel *result = NULL ;
+        result = g_malloc0 (sizeof (CRAttrSel)) ;
+
+        return result ;
+}
+
+/**
+ *Appends an attribute selector to the current list of
+ *attribute selectors represented by a_this.
+ *
+ *@param a_this the this pointer of the current instance of
+ *#CRAttrSel.
+ *@param a_attr_sel selector to append.
+ *@return CR_OK upon successfull 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 ;
+}
+
+/**
+ *Prepends an attribute selector to the list of
+ *attributes selector represented by a_this.
+ *
+ *@param a_this the "this pointer" of the current instance
+ *of #CRAttrSel.
+ *@param a_attr_sel the attribute selector to append.
+ *@return CR_OK upon successfull 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 ;
+}
+
+guchar *
+cr_attr_sel_to_string (CRAttrSel *a_this)
+{
+        CRAttrSel *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_printf (str_buf," ") ;
+                }
+
+                if (cur->name)
+                {
+                        guchar *name = NULL ;
+
+                        name = g_strndup (cur->name->str,
+                                          cur->name->len) ;
+                        if (name)
+                        {
+                                g_string_append_printf (str_buf, 
+                                                        "%s", name) ;
+                                g_free (name) ;
+                                name = NULL ;
+                        }
+                }
+        
+                if (cur->value)
+                {
+                        guchar *value = NULL ;
+
+                        value = g_strndup (cur->value->str,
+                                           cur->value->len) ;
+                        if (value)
+                        {
+                                switch (cur->match_way)
+                                {
+                                case SET:
+                                        break ;
+
+                                case EQUALS:
+                                        g_string_append_printf 
+                                                (str_buf,"=") ;
+                                        break ;
+
+                                case INCLUDES:
+                                        g_string_append_printf 
+                                                (str_buf,"~=") ;
+                                        break ;
+
+                                case DASHMATCH:
+                                        g_string_append_printf 
+                                                (str_buf,"|=") ;
+                                                break ;
+
+                                default:
+                                        break ;
+                                }
+                        
+                                g_string_append_printf 
+                                        (str_buf,"\"%s\"",value) ;
+
+                                g_free (value) ;
+                                value = NULL ;
+                        }
+                }
+        }
+
+        if (str_buf)
+        {
+                result = str_buf->str ;
+                g_string_free (str_buf, FALSE) ;                
+        }
+
+        return result ;
+}
+
+/**
+ *Dumps the current instance of #CRAttrSel to a file.
+ *@param a_this the "this pointer" of the current instance of
+ *#CRAttrSel.
+ *@param a_fp the destination file.
+ */
+void
+cr_attr_sel_dump (CRAttrSel *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 ;
+        }
+}
+
+
+/**
+ *Destroys the current instance of #CRAttrSel.
+ *Frees all the fields if they are non null.
+ *@param a_this the "this pointer" of the current
+ *instance of #CRAttrSel.
+ */
+void
+cr_attr_sel_destroy (CRAttrSel *a_this)
+{
+        g_return_if_fail (a_this) ;
+
+        if (a_this->name)
+        {
+                g_string_free (a_this->name, TRUE) ;
+                a_this->name = NULL ;
+        }
+
+        if (a_this->value)
+        {
+                g_string_free (a_this->value, TRUE) ;
+                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 ;
+        }
+}