/**
* Evaluate the shortcodes on some text
*
* @param string $content Text containing shortcodes (or none)
* @param array $passatt Attributes to be passed to the shortcode handler callbacks.
* @return string The transformed text.
*/
public static function apply($content, $passatt = NULL)
{
if ($passatt !== NULL) {
self::$passatt = $passatt;
}
$pattern = self::getRegex();
// we want to split the message into nice paragraphs first. Don't want
// to interfere with shortcode tags or the content between them, so
// translate the tags into keys...
$keysuffix = uniqid();
$keyed = array();
// replace \r\n style line breaks with \n
$content = str_replace("\r\n", "\n", $content);
preg_match_all("/{$pattern}/s", $content, $match);
foreach ($match[0] as $match) {
$key = md5($match . $keysuffix);
$keyed[$key] = $match;
$content = str_replace($match, $key, $content);
}
// split by two or more new lines/carriage returns
$lines = preg_split("#[\n\r]{2,}#", $content, NULL, PREG_SPLIT_DELIM_CAPTURE);
// reconstruct as a sequence of paragraphs:
$trans_content = "";
if (count($lines) > 1) {
foreach ($lines as $line) {
$trans_content .= "[_p]" . trim($line) . "[/_p]";
}
} else {
// [_p] will call us back... when we get to one line after evaluating
// shortcodes inside the [_p], we stop adding [_p]'s.
$trans_content = $lines[0];
}
// replace back the tag keys with the actual tags:
foreach ($keyed as $key => $match) {
$trans_content = str_replace($key, $match, $trans_content);
}
// evaluate the shortcodes (including the paragraphs we just created).
return trim(preg_replace_callback("/{$pattern}/s", array("Bbpp_ThankMeLater_Shortcoder", "applyTag"), $trans_content));
}
