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Filename : Images.php
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<?php
/* vim: set expandtab tabstop=4 shiftwidth=4: */
// +----------------------------------------------------------------------+
// | PHP Version 4                                                        |
// +----------------------------------------------------------------------+
// | Copyright (c) 1997-2003 The PHP Group                                |
// +----------------------------------------------------------------------+
// | This source file is subject to version 2.02 of the PHP license,      |
// | that is bundled with this package in the file LICENSE, and is        |
// | available at through the world-wide-web at                           |
// | http://www.php.net/license/2_02.txt.                                 |
// | If you did not receive a copy of the PHP license and are unable to   |
// | obtain it through the world-wide-web, please send a note to          |
// | license@php.net so we can mail you a copy immediately.               |
// +----------------------------------------------------------------------+
// | Author: Stijn de Reede <sjr@gmx.co.uk>                               |
// +----------------------------------------------------------------------+
//
// $Id$
//

/**
* @package  HTML_BBCodeParser
* @author   Stijn de Reede  <sjr@gmx.co.uk>
*/
require_once 'HTML/BBCodeParser/Filter.php';

class HTML_BBCodeParser_Filter_Images extends HTML_BBCodeParser_Filter
{

    /**
    * An array of tags parsed by the engine
    *
    * @access   private
    * @var      array
    */
    var $_definedTags = array(
        'img' => array(
            'htmlopen'  => 'img',
            'htmlclose' => '',
            'allowed'   => 'none',
            'attributes'=> array(
                'img'   => 'src=%2$s%1$s%2$s',
                'w'     => 'width=%2$s%1$d%2$s',
                'h'     => 'height=%2$s%1$d%2$s',
                'alt'   => 'alt=%2$s%1$s%2$s',
            )
        )
    );

    /**
    * Executes statements before the actual array building starts
    *
    * This method should be overwritten in a filter if you want to do
    * something before the parsing process starts. This can be useful to
    * allow certain short alternative tags which then can be converted into
    * proper tags with preg_replace() calls.
    * The main class walks through all the filters and and calls this
    * method if it exists. The filters should modify their private $_text
    * variable.
    *
    * @return   none
    * @access   private
    * @see      $_text
    * @author   Stijn de Reede  <sjr@gmx.co.uk>
    */
    function _preparse()
    {
        $options = PEAR::getStaticProperty('HTML_BBCodeParser','_options');
        $o  = $options['open'];
        $c  = $options['close'];
        $oe = $options['open_esc'];
        $ce = $options['close_esc'];
        $this->_preparsed = preg_replace(
			"!".$oe."img(\s?.*)".$ce."(.*)".$oe."/img".$ce."!Ui",
			$o."img=\"\$2\" alt=\"\"\$1".$c.$o."/img".$c,
                        $this->_text);
    }
}