/cssed-0.4.0/libcroco/parser/cr-attr-sel.c
C | 221 lines | 120 code | 39 blank | 62 comment | 16 complexity | 44a4ef77c81a6aa24c12e6592e21f0fa MD5 | raw file
Possible License(s): GPL-2.0
- /* -*- 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"
- /**
- *@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_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;
- }
- /**
- *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) {
- 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;
- }
- }