root/trunk/includes/wiki.inc.php

<?php

$Wiki=0;
class Wikini
{
    function IncludeBuffered($filename, $notfoundText = "", $vars = "", $path = "")
    {
        if ($path) $dirs = explode(":", $path);
        else $dirs = array("");

        foreach($dirs as $dir)
        {
            if ($dir) $dir .= "/";
            $fullfilename = $dir.$filename;
            if (file_exists($fullfilename))
            {
                if (is_array($vars)) extract($vars);

                ob_start();
                include($fullfilename);
                $output = ob_get_contents();
                ob_end_clean();
                return $output;
            }
        }
        if ($notfoundText) return $notfoundText;
        else return false;
    }


    function Wikise($text, $formatter = "wakka")
    {
        global $token;
        $token = array();
        return $this->IncludeBuffered(INCLUDESPATH."/formatters/".$formatter.".php", "<i>Impossible de trouver le formateur \"$formatter\"</i>", compact("text"));
    } 

    function WikiLink($tag, $method = "", $text = "", $track = 1)
    {
        $tag=htmlspecialchars($tag);//avoid xss
        $text=htmlspecialchars($text);//paranoiac again
        if (!$text)
        {
            if(strlen($tag)>29)
                $text = substr($tag, 0, 32).'[...]';
            else
                $text = $tag;
        }

    // is this a full link? ie, does it contain alpha-numeric characters?
        if (preg_match("/[^[:alnum:]]/", $tag))
        {
            // check for email addresses
            if (preg_match("/^.+\@.+$/", $tag))
                $tag = "mailto:".$tag;
            else if (preg_match("/^\/.+$/", $tag))
                $tag = $tag;
            // check for protocol-less URLs
            else if (!preg_match("/:\/\//", $tag))
                $tag = "http://".$tag;   //Very important for xss (avoid javascript:() hacking)
            // is this an inline image (text!=tag and url ends png,gif,jpeg)
            if($text!=$tag and preg_match("/\.(gif|jpeg|png|jpg)$/i",$tag))
             return "<img src=\"$tag\" alt=\"$text\" />";
            elseif($text == $tag)
            {
            if(strlen($tag)>29)
                $text = substr($tag, 0, 32).'[...]';
            return "<a href=\"$tag\">$text</a>";
            }
            else
             return "<a href=\"$tag\">$text</a>";
        }
        else
            return $text;

    }

    function Action($action, $forceLinkTracking = 0)
    {
        $action = trim($action); $vars=array();
        // stupid attributes check
        if ((stristr($action, "=\"")) || (stristr($action, "/")))
        {
            // extract $action and $vars_temp ("raw" attributes)
            preg_match("/^([A-Za-z0-9]*)\/?(.*)$/", $action, $matches);
            list(, $action, $vars_temp) = $matches;
            // match all attributes (key and value)
            $parameter[$vars_temp]=$vars_temp;
            preg_match_all("/([A-Za-z0-9]*)=\"(.*)\"/U", $vars_temp, $matches);

            // prepare an array for extract() to work with (in $this->IncludeBuffered())
            if (is_array($matches))
            {
                for ($a = 0; $a < count($matches); $a++)
                {
                    $vars[$matches[1][$a]] = $matches[2][$a];
                    $parameter[$matches[1][$a]]=$matches[2][$a];
                }
            }
        }
    //    if (!$forceLinkTracking) $this->StopLinkTracking();
        $result = $this->IncludeBuffered(strtolower($action).".php", "<i>Action inconnue \"$action\"</i>", $vars, INCLUDESPATH."/actions/");
    //    $this->StartLinkTracking();
        if (isset($parameter)) unset($parameter[$parameter]);
        unset($parameter);
        return $result;
    }
}

function Wikise($text, $formatter = "wakka")
{
    global $Wiki;
    $Wiki = new Wikini();
    return $Wiki->Wikise($text, $formatter);
}

?>