* @license MIT
*/
class sfEasyMarkdownHelper
{
/**
* render - render markdown and apply filters on it
*
* @param string $content
* @param array $filters
* @return void
*/
static public function render($content, $filters=array())
{
$filters = self::addBuiltinFilters($filters);
// xml special chars
$content = str_replace(array('<', '>'), array('<', '>'), $content);
$html = self::render_raw($content);
foreach ($filters as $filterCallable)
{
if (is_callable($filterCallable))
{
$html = call_user_func($filterCallable, $html);
}
else
{
throw new InvalidArgumentException(__CLASS__.'\'s filters must be a callable array.');
}
}
return $html;
}
/**
* todo
*/
static public function render_with_cache($cache_key, $content, $filters=array())
{
}
/**
* render_raw - raw convert of markdown to html by the MarkdownExtra library
*
* @param mixed $content
* @return void
*/
static public function render_raw($content)
{
return markdown($content);
}
static protected function addBuiltinFilters(array $filters)
{
$plugins = sfContext::getInstance()->getConfiguration()->getPlugins();
if (in_array('sfEasySyntaxHighlighterPlugin', $plugins))
{
$filters[] = array(__CLASS__, 'applySyntaxHighlighterFilter');
}
return $filters;
}
static protected function applySyntaxHighlighterFilter($html)
{
return preg_replace_callback('#(.+?)
#s', array(__CLASS__, 'applySyntaxHighlighterFilterCallback'), $html);
}
static protected function applySyntaxHighlighterFilterCallback($matches)
{
if (preg_match('/^\[(.+?)\]\s*(.+)$/s', $matches[1], $match))
{
$language = ($match[1] == 'xml') ? 'html4strict' : $match[1];
return sfEasySyntaxHighlighterHelper::render(html_entity_decode(html_entity_decode($match[2])), $language);
}
else
{
return ''.$matches[1].'
';
}
}
}