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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 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;
}
/**
* 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 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;
}
/**
* 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 = g_strndup (cur->name->stryng->str,
cur->name->stryng->len);
if (name) {
g_string_append (str_buf, name);
g_free (name);
name = NULL;
}
}
if (cur->value) {
guchar *value = NULL;
value = 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 = 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;
}
}
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