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<?php
/*
* Copyright (C) 2003-2004 Polytechnique.org
* http://opensource.polytechnique.org/
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
// dependency on PEAR
require_once 'Plugin/Skel.php';
/** This class describes a Diogenes filter plugin.
*/
class Diogenes_Plugin_Filter extends Diogenes_Plugin_Skel
{
/** Plugin name */
var $name = "Plugin_Filter";
/** Plugin description */
var $description = "Filter plugin skeleton";
/** Plugin version */
var $version = "0.1";
/** Plugin type : filter */
var $type = "filter";
/** Apply filtering to the input and return an output.
*
* The default implementation searches for a tag whose name matches
* the plugin name and replaces it by the output of the show() method.
*
* @param $input
*/
function filter($input)
{
global $page;
$name = $this->name;
$mask = "/(\{$name(\s+[^\}]*)?\})/";
$bits = preg_split($mask, $input, -1, PREG_SPLIT_NO_EMPTY | PREG_SPLIT_DELIM_CAPTURE);
$output = "";
while($bit = array_shift($bits)) {
$matches = array();
if (preg_match($mask, $bit, $matches)) {
if ($matches[2])
{
$argstr = array_shift($bits);
} else {
$argstr = "";
}
$argbits = preg_split("/\s/", trim($argstr));
$args = array();
foreach($argbits as $argbit)
{
if (preg_match('/([a-zA-Z]+)=([\'"])(.*)\2$/', $argbit, $matches)) {
$args[$matches[1]] = $matches[3];
}
}
$output .= $this->show($args);
} else {
$output .= $bit;
}
}
return $output;
}
/** Show an instance of the plugin. This is called by filter() every time
* a tag representing the plugin is found.
*/
function show()
{
return '';
}
}
?>
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