| /* -*- Mode: C; indent-tabs-mode:nil; c-basic-offset: 8-*- */ |
| |
| /* libcroco - Library for parsing and applying CSS |
| * Copyright (C) 2006-2019 Free Software Foundation, Inc. |
| * |
| * This file is not part of the GNU gettext program, but is used with |
| * GNU gettext. |
| * |
| * The original copyright notice is as follows: |
| */ |
| |
| /* |
| * This file is part of The Croco Library |
| * |
| * Copyright (C) 2003-2004 Dodji Seketeli. All Rights Reserved. |
| * |
| * 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 |
| */ |
| |
| #include <config.h> |
| #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 = (guchar *) g_strndup (cur->name->stryng->str, |
| cur->name->stryng->len); |
| if (name) { |
| g_string_append (str_buf, (const gchar *) name); |
| g_free (name); |
| name = NULL; |
| } |
| } |
| |
| if (cur->value) { |
| guchar *value = NULL; |
| |
| value = (guchar *) 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 = (guchar *) 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; |
| } |
| } |
| |