File Source for PathRemover.php

<?php
/**
* MediaSearch
*
* LICENSE
*
* "THE BEER-WARE LICENSE" (Revision 42):
* "Sven Strittmatter" <ausserirdisch@sven-space.de> wrote this file.
* As long as you retain this notice you can do whatever you want with
* this stuff. If we meet some day, and you think this stuff is worth it,
* you can buy me a beer in return.
*
* $Author$
* $Revision$
*
* @category MediaSearch
* @package MediaSearch_Filter_KeyWords
* @copyright Copyright (c) 2009 Sven Strittmatter
*/
/**
* @see MediaSearch_Filter_KeyWords_Interface
*/
require_once('MediaSearch/Filter/KeyWords/Interface.php');
/**
* Removes file name parts from the key word list.
*
* @category MediaSearch
* @package MediaSearch_Filter_KeyWords
* @copyright Copyright (c) 2009 Sven Strittmatter
*/
class MediaSearch_Filter_KeyWords_PathRemover
implements MediaSearch_Filter_KeyWords_Interface {
const TRACE_LELVEL = 33;
/**
* The base path. Keywords generated by this path part
* will be removed.
*
* @static
* @access public
* @var string
*/
public static $basePath;
/**
* Instance for singleton.
*
* @static
* @access private
* @var MediaSearch_Filter_KeyWords_BlackList
*/
private static $instance;
/**
* The directory names extracted from $basePath.
*
* @access private
* @var array
*/
private $partsToRemove;
/**
* Singleton inplementation (see GoF).
* Checks if the base pat hproperty was set before constructing.
*
* @access private
*/
private function __construct() {
if (null === self::$basePath || empty(self::$basePath)) {
$message = 'Please set MediaSearch_Filter_KeyWords_PathRemover::$basePath ';
$message .= 'to the directory path where you are scanning BEFORE ';
$message .= 'the first time use of this filter!';
throw new InvalidArgumentException($message);
}
$this->partsToRemove = explode(DIRECTORY_SEPARATOR, self::$basePath);
}
/**
* Returns th einstance of this class.
*
* @static
* @access public
* @return MediaSearch_Filter_KeyWords_PathRemover
*/
public static function get() {
if (null === self::$instance) {
self::$instance = new MediaSearch_Filter_KeyWords_PathRemover();
}
return self::$instance;
}
/**
* Removes all direcotry names occuring in $basePath from the keyword list.
*
* @access public
* @param array $input
* @return array
*/
public function process(array $input) {
$filtered = array();
foreach ($input as $keyword) {
if (in_array($keyword, $this->partsToRemove)) {
continue;
}
$filtered[] = $keyword;
}
return $filtered;
}
}

Source for file PathRemover.php