<?php rcs_id('$Id: interwiki.php,v 1.7 2001-09-19 02:36:24 wainstead Exp $');

function generate_interwikimap_and_regexp()
{
    global $interwikimap_file, $InterWikiLinkRegexp, $interwikimap;

    $intermap_data = file(INTERWIKI_MAP_FILE, 1);
    $wikiname_regexp = "";
    for ($i=0; $i<count($intermap_data); $i++)
        {
            list( $wiki, $inter_url ) = split(' ', chop($intermap_data[$i]));
            $interwikimap[$wiki] = $inter_url;
            if ($wikiname_regexp)
                $wikiname_regexp .= "|";
            $wikiname_regexp .= $wiki;
        }

    $InterWikiLinkRegexp = "($wikiname_regexp)";
}

generate_interwikimap_and_regexp();

function LinkInterWikiLink($link, $linktext='')
{
    global $interwikimap;

    list( $wiki, $page ) = split( ":", $link, 2 );

    $url = $interwikimap[$wiki];

    // Urlencode page only if it's a query arg.
    if (strstr($url, '?'))
        $url .= rawurlencode($page);
    else
        $url .= $page;

    if ($linktext) {
        $linktext = htmlspecialchars($linktext);
        $class = 'named-interwiki';
    }
    else {
        $linktext = ( htmlspecialchars("$wiki:")
                      . QElement('span', array('class' => 'wikipage'), $page) );
        $class = 'interwiki';
    }

    return Element('a', array('href' => $url,
                              'class' => $class),
                   $linktext);
}

// Link InterWiki links
// These can be protected by a '!' like Wiki words.
function wtt_interwikilinks($match, &$trfrm)
{
    if ($match[0] == "!")
        return htmlspecialchars(substr($match,1));
    return LinkInterWikiLink($match);
}

// For emacs users
// Local Variables:
// mode: php
// tab-width: 8
// c-basic-offset: 4
// c-hanging-comment-ender-p: nil
// indent-tabs-mode: nil
// End:

?>