142 lines
4.8 KiB
PHP
142 lines
4.8 KiB
PHP
<?php
|
|
/**
|
|
* Zend Framework
|
|
*
|
|
* LICENSE
|
|
*
|
|
* This source file is subject to the new BSD license that is bundled
|
|
* with this package in the file LICENSE.txt.
|
|
* It is also available through the world-wide-web at this URL:
|
|
* http://framework.zend.com/license/new-bsd
|
|
* If you did not receive a copy of the license and are unable to
|
|
* obtain it through the world-wide-web, please send an email
|
|
* to license@zend.com so we can send you a copy immediately.
|
|
*
|
|
* @category Zend
|
|
* @package Zend_Dom
|
|
* @copyright Copyright (c) 2005-2008 Zend Technologies USA Inc. (http://www.zend.com)
|
|
* @license http://framework.zend.com/license/new-bsd New BSD License
|
|
*/
|
|
|
|
/**
|
|
* Transform CSS selectors to XPath
|
|
*
|
|
* @package Zend_Dom
|
|
* @subpackage Query
|
|
* @copyright Copyright (C) 2007 - Present, Zend Technologies, Inc.
|
|
* @license New BSD {@link http://framework.zend.com/license/new-bsd}
|
|
* @version $Id: Css2Xpath.php 11013 2008-08-24 21:06:20Z thomas $
|
|
*/
|
|
class Zend_Dom_Query_Css2Xpath
|
|
{
|
|
/**
|
|
* Transform CSS expression to XPath
|
|
*
|
|
* @param string $path
|
|
* @return string
|
|
*/
|
|
public static function transform($path)
|
|
{
|
|
$path = (string) $path;
|
|
if (strstr($path, ',')) {
|
|
$paths = explode(',', $path);
|
|
$expressions = array();
|
|
foreach ($paths as $path) {
|
|
$xpath = self::transform(trim($path));
|
|
if (is_string($xpath)) {
|
|
$expressions[] = $xpath;
|
|
} elseif (is_array($xpath)) {
|
|
$expressions = array_merge($expressions, $xpath);
|
|
}
|
|
}
|
|
return $expressions;
|
|
}
|
|
|
|
$paths = array('//');
|
|
$segments = preg_split('/\s+/', $path);
|
|
foreach ($segments as $key => $segment) {
|
|
$pathSegment = self::_tokenize($segment);
|
|
if (0 == $key) {
|
|
if (0 === strpos($pathSegment, '[contains(@class')) {
|
|
$paths[0] .= '*' . $pathSegment;
|
|
} else {
|
|
$paths[0] .= $pathSegment;
|
|
}
|
|
continue;
|
|
}
|
|
if (0 === strpos($pathSegment, '[contains(@class')) {
|
|
foreach ($paths as $key => $xpath) {
|
|
$paths[$key] .= '//*' . $pathSegment;
|
|
$paths[] = $xpath . $pathSegment;
|
|
}
|
|
} else {
|
|
foreach ($paths as $key => $xpath) {
|
|
$paths[$key] .= '//' . $pathSegment;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (1 == count($paths)) {
|
|
return $paths[0];
|
|
}
|
|
return implode(' | ', $paths);
|
|
}
|
|
|
|
/**
|
|
* Tokenize CSS expressions to XPath
|
|
*
|
|
* @param string $expression
|
|
* @return string
|
|
*/
|
|
protected static function _tokenize($expression)
|
|
{
|
|
// Child selectors
|
|
$expression = str_replace('>', '/', $expression);
|
|
|
|
// IDs
|
|
$expression = preg_replace('|#([a-z][a-z0-9_-]*)|i', '[@id=\'$1\']', $expression);
|
|
$expression = preg_replace('|(?<![a-z0-9_-])(\[@id=)|i', '*$1', $expression);
|
|
|
|
// arbitrary attribute strict equality
|
|
if (preg_match('|([a-z]+)\[([a-z0-9_-]+)=[\'"]([^\'"]+)[\'"]\]|i', $expression)) {
|
|
$expression = preg_replace_callback(
|
|
'|([a-z]+)\[([a-z0-9_-]+)=[\'"]([^\'"]+)[\'"]\]|i',
|
|
create_function(
|
|
'$matches',
|
|
'return $matches[1] . "[@" . strtolower($matches[2]) . "=\'" . $matches[3] . "\']";'
|
|
),
|
|
$expression
|
|
);
|
|
}
|
|
|
|
// arbitrary attribute contains full word
|
|
if (preg_match('|([a-z]+)\[([a-z0-9_-]+)~=[\'"]([^\'"]+)[\'"]\]|i', $expression)) {
|
|
$expression = preg_replace_callback(
|
|
'|([a-z]+)\[([a-z0-9_-]+)~=[\'"]([^\'"]+)[\'"]\]|i',
|
|
create_function(
|
|
'$matches',
|
|
'return $matches[1] . "[contains(@" . strtolower($matches[2]) . ", \' $matches[3] \')]";'
|
|
),
|
|
$expression
|
|
);
|
|
}
|
|
|
|
// arbitrary attribute contains specified content
|
|
if (preg_match('|([a-z]+)\[([a-z0-9_-]+)\*=[\'"]([^\'"]+)[\'"]\]|i', $expression)) {
|
|
$expression = preg_replace_callback(
|
|
'|([a-z]+)\[([a-z0-9_-]+)\*=[\'"]([^\'"]+)[\'"]\]|i',
|
|
create_function(
|
|
'$matches',
|
|
'return $matches[1] . "[contains(@" . strtolower($matches[2]) . ", \'" . $matches[3] . "\')]";'
|
|
),
|
|
$expression
|
|
);
|
|
}
|
|
|
|
// Classes
|
|
$expression = preg_replace('|\.([a-z][a-z0-9_-]*)|i', "[contains(@class, ' \$1 ')]", $expression);
|
|
|
|
return $expression;
|
|
}
|
|
}
|