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<?php
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/* vim: set expandtab tabstop=4 shiftwidth=4 softtabstop=4: */
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/**
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* Keep only the files that have a specific extension
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*
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* PHP versions 4 and 5
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330,Boston,MA 02111-1307 USA
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*
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* @category File Formats
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* @package File_Archive
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* @author Vincent Lascaux <vincentlascaux@php.net>
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* @copyright 1997-2005 The PHP Group
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* @license http://www.gnu.org/copyleft/lesser.html LGPL
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* @version CVS: $Id: Extension.php,v 1.5 2005/04/21 10:01:46 vincentlascaux Exp $
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* @link http://pear.php.net/package/File_Archive
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*/
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require_once "File/Archive/Predicate.php";
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/**
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* Keep only the files that have a specific extension
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*
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* @see File_Archive_Predicate, File_Archive_Reader_Filter
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*/
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class File_Archive_Predicate_Extension extends File_Archive_Predicate
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{
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var $extensions;
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/**
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* @param $extensions array or comma separated string of allowed extensions
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*/
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function File_Archive_Predicate_Extension($extensions)
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{
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if (is_string($extensions)) {
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$this->extensions = explode(",",$extensions);
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} else {
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$this->extensions = $extensions;
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}
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}
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/**
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* @see File_Archive_Predicate::isTrue()
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*/
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function isTrue(&$source)
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{
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$filename = $source->getFilename();
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$pos = strrpos($filename, '.');
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$extension = "";
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if ($pos !== FALSE) {
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$extension = strtolower(substr($filename, $pos+1));
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}
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$result = in_array($extension, $this->extensions);
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return $result;
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}
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}
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?>
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