/* vim: set expandtab tabstop=4 shiftwidth=4 softtabstop=4: */
/**
* Keep only the files that have a specific extension
*
* PHP versions 4 and 5
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330,Boston,MA 02111-1307 USA
*
* @category File Formats
* @package File_Archive
* @author Vincent Lascaux
* @copyright 1997-2005 The PHP Group
* @license http://www.gnu.org/copyleft/lesser.html LGPL
* @version CVS: $Id: Extension.php,v 1.5 2005/04/21 10:01:46 vincentlascaux Exp $
* @link http://pear.php.net/package/File_Archive
*/
require_once "File/Archive/Predicate.php";
/**
* Keep only the files that have a specific extension
*
* @see File_Archive_Predicate, File_Archive_Reader_Filter
*/
class File_Archive_Predicate_Extension extends File_Archive_Predicate
{
var $extensions;
/**
* @param $extensions array or comma separated string of allowed extensions
*/
function File_Archive_Predicate_Extension($extensions)
{
if (is_string($extensions)) {
$this->extensions = explode(",",$extensions);
} else {
$this->extensions = $extensions;
}
}
/**
* @see File_Archive_Predicate::isTrue()
*/
function isTrue(&$source)
{
$filename = $source->getFilename();
$pos = strrpos($filename, '.');
$extension = "";
if ($pos !== FALSE) {
$extension = strtolower(substr($filename, $pos+1));
}
$result = in_array($extension, $this->extensions);
return $result;
}
}
?>
