326 lines
9.1 KiB
C
326 lines
9.1 KiB
C
/* -*- 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 <glib.h>
|
|
#include "cr-simple-sel.h"
|
|
|
|
/**
|
|
* cr_simple_sel_new:
|
|
*
|
|
*The constructor of #CRSimpleSel.
|
|
*
|
|
*Returns the new instance of #CRSimpleSel.
|
|
*/
|
|
CRSimpleSel *
|
|
cr_simple_sel_new (void)
|
|
{
|
|
CRSimpleSel *result = NULL;
|
|
|
|
result = g_try_malloc (sizeof (CRSimpleSel));
|
|
if (!result) {
|
|
cr_utils_trace_info ("Out of memory");
|
|
return NULL;
|
|
}
|
|
memset (result, 0, sizeof (CRSimpleSel));
|
|
|
|
return result;
|
|
}
|
|
|
|
/**
|
|
* cr_simple_sel_append_simple_sel:
|
|
*
|
|
*Appends a simpe selector to the current list of simple selector.
|
|
*
|
|
*@a_this: the this pointer of the current instance of #CRSimpleSel.
|
|
*@a_sel: the simple selector to append.
|
|
*
|
|
*Returns: the new list upon successful completion, an error code otherwise.
|
|
*/
|
|
CRSimpleSel *
|
|
cr_simple_sel_append_simple_sel (CRSimpleSel * a_this, CRSimpleSel * a_sel)
|
|
{
|
|
CRSimpleSel *cur = NULL;
|
|
|
|
g_return_val_if_fail (a_sel, NULL);
|
|
|
|
if (a_this == NULL)
|
|
return a_sel;
|
|
|
|
for (cur = a_this; cur->next; cur = cur->next) ;
|
|
|
|
cur->next = a_sel;
|
|
a_sel->prev = cur;
|
|
|
|
return a_this;
|
|
}
|
|
|
|
/**
|
|
* cr_simple_sel_prepend_simple_sel:
|
|
*
|
|
*@a_this: the this pointer of the current instance of #CRSimpleSel.
|
|
*@a_sel: the simple selector to prepend.
|
|
*
|
|
*Prepends a simple selector to the current list of simple selectors.
|
|
*
|
|
*Returns the new list upon successful completion, an error code otherwise.
|
|
*/
|
|
CRSimpleSel *
|
|
cr_simple_sel_prepend_simple_sel (CRSimpleSel * a_this, CRSimpleSel * a_sel)
|
|
{
|
|
g_return_val_if_fail (a_sel, NULL);
|
|
|
|
if (a_this == NULL)
|
|
return a_sel;
|
|
|
|
a_sel->next = a_this;
|
|
a_this->prev = a_sel;
|
|
|
|
return a_sel;
|
|
}
|
|
|
|
guchar *
|
|
cr_simple_sel_to_string (CRSimpleSel const * a_this)
|
|
{
|
|
GString *str_buf = NULL;
|
|
guchar *result = NULL;
|
|
|
|
CRSimpleSel const *cur = 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->name) {
|
|
guchar *str = (guchar *) g_strndup (cur->name->stryng->str,
|
|
cur->name->stryng->len);
|
|
|
|
if (str) {
|
|
switch (cur->combinator) {
|
|
case COMB_WS:
|
|
g_string_append (str_buf, " ");
|
|
break;
|
|
|
|
case COMB_PLUS:
|
|
g_string_append (str_buf, "+");
|
|
break;
|
|
|
|
case COMB_GT:
|
|
g_string_append (str_buf, ">");
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
|
|
g_string_append (str_buf, (const gchar *) str);
|
|
g_free (str);
|
|
str = NULL;
|
|
}
|
|
}
|
|
|
|
if (cur->add_sel) {
|
|
guchar *tmp_str = NULL;
|
|
|
|
tmp_str = cr_additional_sel_to_string (cur->add_sel);
|
|
if (tmp_str) {
|
|
g_string_append (str_buf, (const gchar *) tmp_str);
|
|
g_free (tmp_str);
|
|
tmp_str = NULL;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (str_buf) {
|
|
result = (guchar *) str_buf->str;
|
|
g_string_free (str_buf, FALSE);
|
|
str_buf = NULL;
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
|
|
guchar *
|
|
cr_simple_sel_one_to_string (CRSimpleSel const * a_this)
|
|
{
|
|
GString *str_buf = NULL;
|
|
guchar *result = NULL;
|
|
|
|
g_return_val_if_fail (a_this, NULL);
|
|
|
|
str_buf = g_string_new (NULL);
|
|
if (a_this->name) {
|
|
guchar *str = (guchar *) g_strndup (a_this->name->stryng->str,
|
|
a_this->name->stryng->len);
|
|
|
|
if (str) {
|
|
g_string_append_printf (str_buf, "%s", str);
|
|
g_free (str);
|
|
str = NULL;
|
|
}
|
|
}
|
|
|
|
if (a_this->add_sel) {
|
|
guchar *tmp_str = NULL;
|
|
|
|
tmp_str = cr_additional_sel_to_string (a_this->add_sel);
|
|
if (tmp_str) {
|
|
g_string_append_printf
|
|
(str_buf, "%s", tmp_str);
|
|
g_free (tmp_str);
|
|
tmp_str = NULL;
|
|
}
|
|
}
|
|
|
|
if (str_buf) {
|
|
result = (guchar *) str_buf->str;
|
|
g_string_free (str_buf, FALSE);
|
|
str_buf = NULL;
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
/**
|
|
* cr_simple_sel_dump:
|
|
*@a_this: the current instance of #CRSimpleSel.
|
|
*@a_fp: the destination file pointer.
|
|
*
|
|
*Dumps the selector to a file.
|
|
*TODO: add the support of unicode in the dump.
|
|
*
|
|
*Returns CR_OK upon successful completion, an error code
|
|
*otherwise.
|
|
*/
|
|
enum CRStatus
|
|
cr_simple_sel_dump (CRSimpleSel const * a_this, FILE * a_fp)
|
|
{
|
|
guchar *tmp_str = NULL;
|
|
|
|
g_return_val_if_fail (a_fp, CR_BAD_PARAM_ERROR);
|
|
|
|
if (a_this) {
|
|
tmp_str = cr_simple_sel_to_string (a_this);
|
|
if (tmp_str) {
|
|
fprintf (a_fp, "%s", tmp_str);
|
|
g_free (tmp_str);
|
|
tmp_str = NULL;
|
|
}
|
|
}
|
|
|
|
return CR_OK;
|
|
}
|
|
|
|
/**
|
|
* cr_simple_sel_compute_specificity:
|
|
*
|
|
*@a_this: the current instance of #CRSimpleSel
|
|
*
|
|
*Computes the selector (combinator separated list of simple selectors)
|
|
*as defined in the css2 spec in chapter 6.4.3
|
|
*
|
|
*Returns CR_OK upon successful completion, an error code otherwise.
|
|
*/
|
|
enum CRStatus
|
|
cr_simple_sel_compute_specificity (CRSimpleSel * a_this)
|
|
{
|
|
CRAdditionalSel const *cur_add_sel = NULL;
|
|
CRSimpleSel const *cur_sel = NULL;
|
|
gulong a = 0,
|
|
b = 0,
|
|
c = 0;
|
|
|
|
g_return_val_if_fail (a_this, CR_BAD_PARAM_ERROR);
|
|
|
|
for (cur_sel = a_this; cur_sel; cur_sel = cur_sel->next) {
|
|
if (cur_sel->type_mask & TYPE_SELECTOR) {
|
|
c++; /*hmmh, is this a new language ? */
|
|
} else if (!cur_sel->name
|
|
|| !cur_sel->name->stryng
|
|
|| !cur_sel->name->stryng->str) {
|
|
if (cur_sel->add_sel->type ==
|
|
PSEUDO_CLASS_ADD_SELECTOR) {
|
|
/*
|
|
*this is a pseudo element, and
|
|
*the spec says, "ignore pseudo elements".
|
|
*/
|
|
continue;
|
|
}
|
|
}
|
|
|
|
for (cur_add_sel = cur_sel->add_sel;
|
|
cur_add_sel; cur_add_sel = cur_add_sel->next) {
|
|
switch (cur_add_sel->type) {
|
|
case ID_ADD_SELECTOR:
|
|
a++;
|
|
break;
|
|
|
|
case NO_ADD_SELECTOR:
|
|
continue;
|
|
|
|
default:
|
|
b++;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
/*we suppose a, b and c have 1 to 3 digits */
|
|
a_this->specificity = a * 1000000 + b * 1000 + c;
|
|
|
|
return CR_OK;
|
|
}
|
|
|
|
/**
|
|
* cr_simple_sel_destroy:
|
|
*
|
|
*@a_this: the this pointer of the current instance of #CRSimpleSel.
|
|
*
|
|
*The destructor of the current instance of
|
|
*#CRSimpleSel.
|
|
*/
|
|
void
|
|
cr_simple_sel_destroy (CRSimpleSel * 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->add_sel) {
|
|
cr_additional_sel_destroy (a_this->add_sel);
|
|
a_this->add_sel = NULL;
|
|
}
|
|
|
|
if (a_this->next) {
|
|
cr_simple_sel_destroy (a_this->next);
|
|
}
|
|
|
|
if (a_this) {
|
|
g_free (a_this);
|
|
}
|
|
}
|