/**
* Regular Expression callable for do_shortcode() for calling shortcode hook.
* @see getShortcodeRegex for details of the match array contents.
*
* @access private
* @uses $shortcode_tags
*
* @param array $m Regular expression match array
* @return mixed False on failure.
*/
private static function doShortcodeTag($m)
{
$shortcode_tags = Shortcodes::$shortcode_tags;
// allow [[foo]] syntax for escaping a tag
if ($m[1] == '[' && $m[6] == ']') {
return substr($m[0], 1, -1);
}
$tag = $m[2];
$attr = Shortcodes::shortcodeParseAtts($m[3]);
if (isset($m[5])) {
// enclosing tag - extra parameter
return $m[1] . call_user_func($shortcode_tags[$tag], $attr, $m[5], $tag) . $m[6];
} else {
// self-closing tag
return $m[1] . call_user_func($shortcode_tags[$tag], $attr, NULL, $tag) . $m[6];
}
}
