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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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 * Evaluates to true iif all predicates given as constructor parameters evaluate
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 * to true
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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: And.php,v 1.8 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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 * Evaluates to true iif all predicates given as constructor parameters evaluate
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 * to true
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 *
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 * Example:
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 *  new File_Archive_Predicate_And($pred1, $pred2, $pred3)
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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_And extends File_Archive_Predicate
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{
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    /**
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     * @var Array List of File_Archive_Predicate objects given as an argument
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     * @access private
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     */
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    var $preds;
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    /**
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     * Build the predicate using the optional File_Archive_Predicates given as
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     * arguments
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     *
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     * Example:
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     *   new File_Archive_Predicate_And($pred1, $pred2, $pred3)
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     */
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    function File_Archive_Predicate_And()
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    {
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        $this->preds = func_get_args();
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    }
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    /**
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     * Add a new predicate to the list
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     *
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     * @param File_Archive_Predicate The predicate to add
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     */
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    function addPredicate($pred)
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    {
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        $this->preds[] = $pred;
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    }
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    /**
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     * @see File_Archive_Predicate::isTrue()
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     */
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    function isTrue(&$source)
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    {
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        foreach ($this->preds as $p) {
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            if (!$p->isTrue($source)) {
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                return false;
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            }
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        }
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        return true;
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    }
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}
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?>