Custom.php
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<?php
/* vim: set expandtab tabstop=4 shiftwidth=4 softtabstop=4: */
/**
* Custom predicate built by supplying a string expression
*
* 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 <vincentlascaux@php.net>
* @copyright 1997-2005 The PHP Group
* @license http://www.gnu.org/copyleft/lesser.html LGPL
* @version CVS: $Id: Custom.php,v 1.7 2005/04/21 10:01:46 vincentlascaux Exp $
* @link http://pear.php.net/package/File_Archive
*/
require_once "File/Archive/Predicate.php";
/**
* Custom predicate built by supplying a string expression
*
* Example:
* new File_Archive_Predicate_Custom("return strlen($name)<100;")
* new File_Archive_Predicate_Custom("strlen($name)<100;")
* new File_Archive_Predicate_Custom("strlen($name)<100")
* new File_Archive_Predicate_Custom("strlen($source->getFilename())<100")
*
* @see File_Archive_Predicate, File_Archive_Reader_Filter
*/
class File_Archive_Predicate_Custom extends File_Archive_Predicate
{
var $expression;
var $useName;
var $useStat;
var $useMIME;
/**
* @param string $expression PHP code that evaluates too a boolean
* It can use the $source variable. If return is ommited, it will be
* added to the begining of the expression. A ; will also be added at
* the end so that you don't need to write it
*/
function File_Archive_Predicate_Custom($expression)
{
$this->expression = $expression.";";
if (strpos($this->expression, "return") === false) {
$this->expression = "return ".$this->expression;
}
$this->useName = (strpos($this->expression, '$name') !== false);
$this->useStat = (strpos($this->expression, '$stat') !== false);
$this->useMIME = (strpos($this->expression, '$mime') !== false);
}
/**
* @see File_Archive_Predicate::isTrue()
*/
function isTrue(&$source)
{
if ($this->useName) {
$name = $source->getFilename();
}
if ($this->useStat) {
$stat = $source->getStat();
$size = $stat[7];
$time = (isset($stat[9]) ? $stat[9] : null);
}
if ($this->useMIME) {
$mime = $source->getMIME();
}
return eval($this->expression);
}
}
?>