.
        if ($m->match == '
')
            $text = TransformInline($text);

        $this->_element = new Block_HtmlElement('pre', false, $text);
        return true;
    }
}


class Block_plugin extends Block_pre
{
    var $_re = '<\?plugin(?:-form)?(?!\S)';

    // FIXME:
    /* 
     *
     * should work. */
    function _match (&$input, $m) {
        $pos = $input->getPos();
        $pi = $m->match . $m->postmatch;
        while (!preg_match('/(?\s*$/', $pi)) {
            if (($line = $input->nextLine()) === false) {
                $input->setPos($pos);
                return false;
            }
            $pi .= "\n$line";
        }
        $input->advance();

	$this->_element = new Cached_PluginInvocation($pi);
        return true;
    }
}

class Block_email_blockquote extends BlockMarkup
{
    var $_attr = array('class' => 'mail-style-quote');
    var $_re = '>\ ?';
    
    function _match (&$input, $m) {
        //$indent = str_replace(' ', '\\ ', $m->match) . '|>$';
        $indent = $this->_re;
        $this->_element = new SubBlock($input, $indent, $m->match,
                                       'blockquote', $this->_attr);
        return true;
    }
}

class Block_hr extends BlockMarkup
{
    var $_re = '-{4,}\s*$';

    function _match (&$input, $m) {
        $input->advance();
        $this->_element = new Block_HtmlElement('hr');
        return true;
    }

    function _setTightness($top, $bot) {
	// Don't tighten 
s
    }
}

class Block_heading extends BlockMarkup
{
    var $_re = '!{1,3}';
    
    function _match (&$input, $m) {
        $tag = "h" . (5 - strlen($m->match));
        $text = TransformInline(trim($m->postmatch));
        $input->advance();

        $this->_element = new Block_HtmlElement($tag, false, $text);
        
        return true;
    }

    function _setTightness($top, $bot) {
	// Don't tighten headers.
    }
}

class Block_p extends BlockMarkup
{
    var $_tag = 'p';
    var $_re = '\S.*';

    function _match (&$input, $m) {
        $this->_text = $m->match;
        $input->advance();
        return true;
    }

    function _setTightness ($top, $bot) {
        $this->_tight_top = $top;
        $this->_tight_bot = $bot;
    }

    function merge ($nextBlock) {
        $class = get_class($nextBlock);
        if ($class == 'block_p' && $this->_tight_bot) {
            $this->_text .= "\n" . $nextBlock->_text;
            $this->_tight_bot = $nextBlock->_tight_bot;
            return $this;
        }
        return false;
    }
            
    function finish () {
        $content = TransformInline(trim($this->_text));
        $p = new Block_HtmlElement('p', false, $content);
        $p->setTightness($this->_tight_top, $this->_tight_bot);
        return $p;
    }
}

////////////////////////////////////////////////////////////////
//

function TransformText ($text, $markup = 2.0, $basepage=false) {
    if (isa($text, 'WikiDB_PageRevision')) {
        $rev = $text;
        $text = $rev->getPackedContent();
        $markup = $rev->get('markup');
    }

    if (empty($markup) || $markup < 2.0) {
        //include_once("lib/transform.php");
        //return do_transform($text);
        $text = ConvertOldMarkup($text);
    }
    
    // Expand leading tabs.
    $text = expand_tabs($text);

    //set_time_limit(3);

    $output = new WikiText($text);
    if (0 && DEBUG && check_php_version(5)) {
        echo "
"; var_dump($output); echo "
"; 
    }

    if ($basepage) {
        // This is for immediate consumption.
        // We must bind the contents to a base pagename so that
        // relative page links can be properly linkified...
        return new CacheableMarkup($output->getContent(), $basepage);
    }
    
    return new XmlContent($output->getContent());
}

// (c-file-style: "gnu")
// Local Variables:
// mode: php
// tab-width: 8
// c-basic-offset: 4
// c-hanging-comment-ender-p: nil
// indent-tabs-mode: nil
// End:   
?>