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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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* Custom predicate built by supplying a string expression
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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: Custom.php,v 1.8 2008/06/04 13:16:07 cbrunet 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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* Custom predicate built by supplying a string expression
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*
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* Example:
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* new File_Archive_Predicate_Custom("return strlen($name)<100;")
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* new File_Archive_Predicate_Custom("strlen($name)<100;")
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* new File_Archive_Predicate_Custom("strlen($name)<100")
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* new File_Archive_Predicate_Custom("strlen($source->getFilename())<100")
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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_Custom extends File_Archive_Predicate
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{
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var $expression;
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var $useName;
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var $useStat;
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var $useMIME;
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/**
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* @param string $expression PHP code that evaluates too a boolean
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* It can use the $source variable. If return is ommited, it will be
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* added to the begining of the expression. A ; will also be added at
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* the end so that you don't need to write it
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*/
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function File_Archive_Predicate_Custom($expression)
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{
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$this->expression = $expression.";";
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if (strpos($this->expression, "return") === false) {
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$this->expression = "return ".$this->expression;
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}
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$this->useName = (strpos($this->expression, '$name') !== false);
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$this->useStat = (strpos($this->expression, '$stat') !== false);
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$this->useMIME = (strpos($this->expression, '$mime') !== false);
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}
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/**
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* @see File_Archive_Predicate::isTrue()
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*/
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function isTrue(&$source)
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{
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if ($this->useName) {
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$name = $source->getFilename();
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}
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if ($this->useStat) {
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$stat = $source->getStat();
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$size = $stat[7];
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$time = (isset($stat[9]) ? $stat[9] : null);
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}
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if ($this->useMIME) {
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$mime = $source->getMIME();
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}
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return (bool)eval($this->expression);
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}
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}
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?>
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