/**
* Pass given text through the filter and return result.
*
* @see Filter::filter()
* @param string $text
* @return string $text
*/
public function filter(Text $text)
{
$links = array();
foreach ($text as $no => $line) {
if (preg_match('/^ {0,3}[!]?\\[([\\w ]+)\\]:\\s+<?(.+?)>?(\\s+[\'"(].*?[\'")])?\\s*$/uS', $line, $match)) {
$link =& $links[strtolower($match[1])];
$link['href'] = $match[2];
$link['title'] = null;
if (isset($match[3])) {
$link['title'] = trim($match[3], ' \'"()');
} else {
if (isset($text[$no + 1])) {
if (preg_match('/^ {0,3}[!]?[\'"(].*?[\'")]\\s*$/uS', $text[$no + 1], $match)) {
$link['title'] = trim($match[0], ' \'"()');
$text[$no + 1]->gist = '';
}
}
}
// erase line
$line->gist = '';
}
}
unset($link, $match, $no, $line);
foreach ($text as $no => $line) {
$line->gist = preg_replace_callback('/[!]?\\[(.*?)\\]\\((.*?)(\\s+"[\\w ]+")?\\)/uS', function ($match) {
if (!isset($match[3])) {
$match[3] = null;
}
if (substr($match[0], 0, 1) == "!") {
return Link::buildImage($match[1], $match[2], $match[3]);
} else {
return Link::buildHtml($match[1], $match[2], $match[3]);
}
}, $line->gist);
if (preg_match_all('/\\[(.+?)\\] ?\\[([\\w ]*)\\]/uS', $line, $matches, PREG_SET_ORDER)) {
foreach ($matches as &$match) {
$ref = !empty($match[2]) ? $match[2] : $match[1];
$ref = strtolower(trim($ref));
if (isset($links[$ref])) {
$link =& $links[$ref];
$html = Link::buildHtml($match[1], $link['href'], $link['title']);
$line->gist = str_replace($match[0], $html, $line);
}
}
}
}
return $text;
}