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<?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_Filter
* @copyright Copyright (c) 2005-2010 Zend Technologies USA Inc. (http://www.zend.com)
* @license http://framework.zend.com/license/new-bsd New BSD License
* @version $Id: PregReplace.php 21086 2010-02-18 21:10:39Z thomas $
*/
/**
* @see Zend_Filter_Interface
*/
require_once 'Zend/Filter/Interface.php';
/**
* @category Zend
* @package Zend_Filter
* @copyright Copyright (c) 2005-2010 Zend Technologies USA Inc. (http://www.zend.com)
* @license http://framework.zend.com/license/new-bsd New BSD License
*/
class Zend_Filter_PregReplace implements Zend_Filter_Interface
{
/**
* Pattern to match
* @var mixed
*/
protected $_matchPattern = null;
/**
* Replacement pattern
* @var mixed
*/
protected $_replacement = '';
/**
* Is unicode enabled?
*
* @var bool
*/
static protected $_unicodeSupportEnabled = null;
/**
* Is Unicode Support Enabled Utility function
*
* @return bool
*/
static public function isUnicodeSupportEnabled()
{
if (self::$_unicodeSupportEnabled === null) {
self::_determineUnicodeSupport();
}
return self::$_unicodeSupportEnabled;
}
/**
* Method to cache the regex needed to determine if unicode support is available
*
* @return bool
*/
static protected function _determineUnicodeSupport()
{
self::$_unicodeSupportEnabled = (@preg_match('/\pL/u', 'a')) ? true : false;
}
/**
* Constructor
* Supported options are
* 'match' => matching pattern
* 'replace' => replace with this
*
* @param string|array $options
* @return void
*/
public function __construct($options = null)
{
if ($options instanceof Zend_Config) {
$options = $options->toArray();
} else if (!is_array($options)) {
$options = func_get_args();
$temp = array();
if (!empty($options)) {
$temp['match'] = array_shift($options);
}
if (!empty($options)) {
$temp['replace'] = array_shift($options);
}
$options = $temp;
}
if (array_key_exists('match', $options)) {
$this->setMatchPattern($options['match']);
}
if (array_key_exists('replace', $options)) {
$this->setReplacement($options['replace']);
}
}
/**
* Set the match pattern for the regex being called within filter()
*
* @param mixed $match - same as the first argument of preg_replace
* @return Zend_Filter_PregReplace
*/
public function setMatchPattern($match)
{
$this->_matchPattern = $match;
return $this;
}
/**
* Get currently set match pattern
*
* @return string
*/
public function getMatchPattern()
{
return $this->_matchPattern;
}
/**
* Set the Replacement pattern/string for the preg_replace called in filter
*
* @param mixed $replacement - same as the second argument of preg_replace
* @return Zend_Filter_PregReplace
*/
public function setReplacement($replacement)
{
$this->_replacement = $replacement;
return $this;
}
/**
* Get currently set replacement value
*
* @return string
*/
public function getReplacement()
{
return $this->_replacement;
}
/**
* Perform regexp replacement as filter
*
* @param string $value
* @return string
*/
public function filter($value)
{
if ($this->_matchPattern == null) {
require_once 'Zend/Filter/Exception.php';
throw new Zend_Filter_Exception(get_class($this) . ' does not have a valid MatchPattern set.');
}
return preg_replace($this->_matchPattern, $this->_replacement, $value);
}
}
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