*/ class Markdown { /** * Converts a Markdown string into HTML. The hardwrap parameter maximizes * compatibility with Diaspora in spite of the Markdown standard. * * @brief Converts a Markdown string into HTML * @param string $text * @param bool $hardwrap * @return string * @throws \Exception */ public static function convert($text, $hardwrap = true) { $stamp1 = microtime(true); $MarkdownParser = new MarkdownParser(); $MarkdownParser->code_class_prefix = 'language-'; $MarkdownParser->hard_wrap = $hardwrap; $MarkdownParser->hashtag_protection = true; $MarkdownParser->url_filter_func = function ($url) { if (strpos($url, '#') === 0) { $url = ltrim($_SERVER['REQUEST_URI'], '/') . $url; } return $url; }; $html = $MarkdownParser->transform($text); DI::profiler()->saveTimestamp($stamp1, "parser", System::callstack()); return $html; } /** * @brief Callback function to replace a Diaspora style mention in a mention for Friendica * * @param array $match Matching values for the callback * [1] = mention type (@ or !) * [2] = name (optional) * [3] = address * @return string Replaced mention * @throws \Friendica\Network\HTTPException\InternalServerErrorException * @throws \ImagickException */ private static function diasporaMention2BBCodeCallback($match) { if ($match[3] == '') { return; } $data = Contact::getDetailsByAddr($match[3]); if (empty($data)) { return; } $name = $match[2]; if ($name == '') { $name = $data['name']; } return $match[1] . '[url=' . $data['url'] . ']' . $name . '[/url]'; } /* * we don't want to support a bbcode specific markdown interpreter * and the markdown library we have is pretty good, but provides HTML output. * So we'll use that to convert to HTML, then convert the HTML back to bbcode, * and then clean up a few Diaspora specific constructs. */ public static function toBBCode($s) { $s = html_entity_decode($s, ENT_COMPAT, 'UTF-8'); // The parser cannot handle paragraphs correctly $s = str_replace(['

', '

', '

'], ['
', '
', '
'], $s); // Escaping hashtags that could be titles $s = preg_replace('/^\#([^\s\#])/im', '\#$1', $s); $s = self::convert($s); $regexp = "/([@!])\{(?:([^\}]+?); ?)?([^\} ]+)\}/"; $s = preg_replace_callback($regexp, ['self', 'diasporaMention2BBCodeCallback'], $s); $s = HTML::toBBCode($s); // protect the recycle symbol from turning into a tag, but without unescaping angles and naked ampersands $s = str_replace('♲', html_entity_decode('♲', ENT_QUOTES, 'UTF-8'), $s); // Convert everything that looks like a link to a link $s = preg_replace('/([^\]=]|^)(https?\:\/\/)([a-zA-Z0-9:\/\-?&;.=_~#%$!+,@]+(?