<?php

function wfSajaxGetMathUrl( $term )
{
    $originalLink = MathRenderer::renderMath( $term );
    
    if (false == strpos($originalLink, "src=\"")) {
        return "";
    }

    $srcPart = substr($originalLink, strpos($originalLink, "src=")+ 5);
    $url = strtok($srcPart, '"');

    return $url;
}

function wfSajaxGetImageUrl( $term )
{
    global $wgExtensionFunctions, $wgTitle;

    $options = new FCKeditorParserOptions();
    $options->setTidy(true);
    $parser = new FCKeditorParser();

    if (in_array("wfCite", $wgExtensionFunctions)) {
        $parser->setHook('ref', array($parser, 'ref'));
        $parser->setHook('references', array($parser, 'references'));
    }
    $parser->setOutputType(OT_HTML);
    $originalLink = $parser->parse("[[Image:".$term."]]", $wgTitle, $options)->getText();
    if (false == strpos($originalLink, "src=\"")) {
        return "";
    }

    $srcPart = substr($originalLink, strpos($originalLink, "src=")+ 5);
    $url = strtok($srcPart, '"');

    return $url;
}

function wfSajaxSearchImageFCKeditor( $term )
{
    global $wgContLang, $wgOut;
    $limit = 10;

    $term = $wgContLang->checkTitleEncoding( $wgContLang->recodeInput( js_unescape( $term ) ) );
    $term1 = str_replace( ' ', '_', $wgContLang->ucfirst( $term ) );
    $term2 = str_replace( ' ', '_', $wgContLang->lc( $term ) );
    $term3 = str_replace( ' ', '_', $wgContLang->uc( $term ) );
    $term = $term1;

    if ( strlen( str_replace( '_', '', $term ) )<3 )
    return "";

    $db =& wfGetDB( DB_SLAVE );
    $res = $db->select( 'page', 'page_title',
    array(  'page_namespace' => NS_IMAGE,
    "LOWER(page_title) LIKE '%". $db->strencode( $term2 ) ."%'" ),
    "wfSajaxSearch",
    array( 'LIMIT' => $limit+1 )
    );

    $ret = "";
    $i=0;
    while ( ( $row = $db->fetchObject( $res ) ) && ( ++$i <= $limit ) ) {
        $ret .= $row->page_title ."\n";
    }

    $term = htmlspecialchars( $term );

    return $ret;
}

function wfSajaxSearchArticleFCKeditor( $term )
{
    global $wgContLang, $wgOut;
    $limit = 10;    
    $ns = NS_MAIN;
    
    $term = $wgContLang->checkTitleEncoding( $wgContLang->recodeInput( js_unescape( $term ) ) );
    
    if (strpos($term, "Category:") === 0) {
        $ns = NS_CATEGORY;
        $term = substr($term, 9);
        $prefix = "Category:";
    }
    else if (strpos($term, ":Category:") === 0) {
        $ns = NS_CATEGORY;
        $term = substr($term, 10);        
        $prefix = ":Category:";
    }
    
    $term1 = str_replace( ' ', '_', $wgContLang->ucfirst( $term ) );
    $term2 = str_replace( ' ', '_', $wgContLang->lc( $term ) );
    $term3 = str_replace( ' ', '_', $wgContLang->uc( $term ) );
    $term = $term1;

    if ( strlen( str_replace( '_', '', $term ) )<3 ) {
        return "";
    }

    $db =& wfGetDB( DB_SLAVE );
    $res = $db->select( 'page', 'page_title',
    array(  'page_namespace' => $ns,
    "LOWER(page_title) LIKE '%". $db->strencode( $term2 ) ."%'" ),
    "wfSajaxSearch",
    array( 'LIMIT' => $limit+1 )
    );

    $ret = "";
    $i=0;
    while ( ( $row = $db->fetchObject( $res ) ) && ( ++$i <= $limit ) ) {
        if (isset($prefix) && !is_null($prefix)) {
            $ret .= $prefix;
        }
        $ret .= $row->page_title ."\n";
    }

    $term = htmlspecialchars( $term );

    return $ret;
}

function wfSajaxWikiToHTML( $wiki )
{
    global $wgTitle;

    $options = new FCKeditorParserOptions();
    $options->setTidy(true);
    $parser = new FCKeditorParser();
    $parser->setOutputType(OT_HTML);

    return $parser->parse($wiki, $wgTitle, $options)->getText();
}
