$s, 'zrl' => $use_zrl, 'options' => $options ]; /** * @hooks markdown_to_bb_init * * \e string \b text - The message as Markdown and what will get returned * * \e boolean \b zrl * * \e array \b options */ call_hooks('markdown_to_bb_init', $x); $s = $x['text']; // Escaping the hash tags $s = preg_replace('/\#([^\s\#])/','#$1',$s); $s = MarkdownExtra::defaultTransform($s); if($options && $options['preserve_lf']) { $s = str_replace(["\r","\n"],["",'
'],$s); } else { $s = str_replace("\r","",$s); } $s = str_replace('#','#',$s); $s = html2bbcode($s); // Convert everything that looks like a link to a link if($use_zrl) { if (strpos($s,'[/img]') !== false) { $s = preg_replace_callback("/\[img\](.*?)\[\/img\]/ism", 'use_zrl_cb_img', $s); $s = preg_replace_callback("/\[img\=([0-9]*)x([0-9]*)\](.*?)\[\/img\]/ism", 'use_zrl_cb_img_x', $s); } $s = preg_replace_callback("/([^\]\=\{\/]|^)(https?\:\/\/)([a-zA-Z0-9\pL\:\/\-\?\&\;\.\=\_\~\#\%\$\!\+\,\@\(\)]+)/ismu", 'use_zrl_cb_link',$s); } else { $s = preg_replace("/([^\]\=\{\/]|^)(https?\:\/\/)([a-zA-Z0-9\pL\:\/\-\?\&\;\.\=\_\~\#\%\$\!\+\,\@\(\)]+)/ismu", '$1[url=$2$3]$2$3[/url]',$s); } // remove duplicate adjacent code tags $s = preg_replace("/(\[code\])+(.*?)(\[\/code\])+/ism","[code]$2[/code]", $s); // Don't show link to full picture (until it is fixed) $s = scale_external_images($s, false); /** * @hooks markdown_to_bb * * \e string - The already converted message as bbcode */ call_hooks('markdown_to_bb', $s); return $s; } function use_zrl_cb_link($match) { $res = ''; $is_zid = is_matrix_url(trim($match[0])); if($is_zid) $res = $match[1] . '[zrl=' . $match[2] . $match[3] . ']' . $match[2] . $match[3] . '[/zrl]'; else $res = $match[1] . '[url=' . $match[2] . $match[3] . ']' . $match[2] . $match[3] . '[/url]'; return $res; } function use_zrl_cb_img($match) { $res = ''; $is_zid = is_matrix_url(trim($match[1])); if($is_zid) $res = '[zmg]' . $match[1] . '[/zmg]'; else $res = $match[0]; return $res; } function use_zrl_cb_img_x($match) { $res = ''; $is_zid = is_matrix_url(trim($match[3])); if($is_zid) $res = '[zmg=' . $match[1] . 'x' . $match[2] . ']' . $match[3] . '[/zmg]'; else $res = $match[0]; return $res; } /** * @brief * * @param array $match * @return string */ function bb_to_markdown_share($match) { $matches = array(); $attributes = $match[1]; $author = ""; preg_match("/author='(.*?)'/ism", $attributes, $matches); if ($matches[1] != "") $author = urldecode($matches[1]); $link = ""; preg_match("/link='(.*?)'/ism", $attributes, $matches); if ($matches[1] != "") $link = $matches[1]; $avatar = ""; preg_match("/avatar='(.*?)'/ism", $attributes, $matches); if ($matches[1] != "") $avatar = $matches[1]; $profile = ""; preg_match("/profile='(.*?)'/ism", $attributes, $matches); if ($matches[1] != "") $profile = $matches[1]; $posted = ""; preg_match("/posted='(.*?)'/ism", $attributes, $matches); if ($matches[1] != "") $posted = $matches[1]; // message_id is never used, do we still need it? $message_id = ""; preg_match("/message_id='(.*?)'/ism", $attributes, $matches); if ($matches[1] != "") $message_id = $matches[1]; if(! $message_id) { preg_match("/guid='(.*?)'/ism", $attributes, $matches); if ($matches[1] != "") $message_id = $matches[1]; } $reldate = datetime_convert('UTC', date_default_timezone_get(), $posted, 'r'); $headline = ''; if ($avatar != "") $headline .= '[url=' . zid($profile) . '][img]' . $avatar . '[/img][/url]'; // Bob Smith wrote the following post 2 hours ago $fmt = sprintf( t('%1$s wrote the following %2$s %3$s'), '[url=' . zid($profile) . ']' . $author . '[/url]', '[url=' . zid($link) . ']' . t('post') . '[/url]', $reldate ); $headline .= $fmt . "\n\n"; $text = $headline . trim($match[2]); return $text; } /** * @brief Convert bbcode to Markdown. * * @param string $Text The message as bbcode * @param array $options default empty * @return string The message converted to Markdown */ function bb_to_markdown($Text, $options = []) { /* * Transform #tags, strip off the [url] and replace spaces with underscore */ $Text = preg_replace_callback('/#\[([zu])rl\=(.*?)\](.*?)\[\/[(zu)]rl\]/i', create_function('$match', 'return \'#\'. str_replace(\' \', \'_\', $match[3]);'), $Text); $Text = preg_replace('/#\^\[([zu])rl\=(.*?)\](.*?)\[\/([zu])rl\]/i', '[$1rl=$2]$3[/$4rl]', $Text); // Converting images with size parameters to simple images. Markdown doesn't know it. $Text = preg_replace("/\[img\=([0-9]*)x([0-9]*)\](.*?)\[\/img\]/ism", '[img]$3[/img]', $Text); $Text = preg_replace_callback("/\[share(.*?)\](.*?)\[\/share\]/ism", 'bb_to_markdown_share', $Text); $x = [ 'bbcode' => $Text, 'options' => $options ]; /** * @hooks bb_to_markdown_bb * * \e string \b bbcode - The message as bbcode and what will get returned * * \e array \b options */ call_hooks('bb_to_markdown_bb', $x); $Text = $x['bbcode']; // Convert it to HTML - don't try oembed $Text = bbcode($Text, [ 'tryoembed' => false ]); // Markdownify does not preserve previously escaped html entities such as <> and &. //$Text = str_replace(array('<','>','&'),array('&_lt_;','&_gt_;','&_amp_;'),$Text); // Now convert HTML to Markdown $Text = html2markdown($Text); //html2markdown adds backslashes infront of hashes after a new line. remove them $Text = str_replace("\n\#", "\n#", $Text); // It also adds backslashes to our attempt at getting around the html entity preservation for some weird reason. //$Text = str_replace(array('&\\_lt\\_;','&\\_gt\\_;','&\\_amp\\_;'),array('<','>','&'),$Text); // If the text going into bbcode() has a plain URL in it, i.e. // with no [url] tags around it, it will come out of parseString() // looking like: , which gets removed by strip_tags(). // So take off the angle brackets of any such URL $Text = preg_replace("//is", "http$1", $Text); // Remove empty zrl links $Text = preg_replace("/\[zrl\=\].*?\[\/zrl\]/is", "", $Text); $Text = trim($Text); /** * @hooks bb_to_markdown * * \e string - The already converted message as bbcode and what will get returned */ call_hooks('bb_to_markdown', $Text); return $Text; } /** * @brief Convert a HTML text into Markdown. * * This function uses the library league/html-to-markdown for this task. * * If the HTML text can not get parsed it will return an empty string. * * @param string $html The HTML code to convert * @return string Markdown representation of the given HTML text, empty on error */ function html2markdown($html,$options = []) { $markdown = ''; $internal_errors = libxml_use_internal_errors(true); $environment = Environment::createDefaultEnvironment($options); $environment->addConverter(new TableConverter()); $converter = new HtmlConverter($environment); try { $markdown = $converter->convert($html); } catch (InvalidArgumentException $e) { logger("Invalid HTML. HTMLToMarkdown library threw an exception."); } libxml_use_internal_errors($internal_errors); return $markdown; } // Tables are not an official part of the markdown specification. // This interface was suggested as a workaround. // author: Mark Hamstra // https://github.com/Mark-H/Docs class TableConverter implements ConverterInterface { /** * @param ElementInterface $element * * @return string */ public function convert(ElementInterface $element) { switch ($element->getTagName()) { case 'tr': $line = []; $i = 1; foreach ($element->getChildren() as $td) { $i++; $v = $td->getValue(); $v = trim($v); if ($i % 2 === 0 || $v !== '') { $line[] = $v; } } return '| ' . implode(' | ', $line) . " |\n"; case 'td': case 'th': return trim($element->getValue()); case 'tbody': return trim($element->getValue()); case 'thead': $headerLine = reset($element->getChildren())->getValue(); $headers = explode(' | ', trim(trim($headerLine, "\n"), '|')); $hr = []; foreach ($headers as $td) { $length = strlen(trim($td)) + 2; $hr[] = str_repeat('-', $length > 3 ? $length : 3); } $hr = '|' . implode('|', $hr) . '|'; return $headerLine . $hr . "\n"; case 'table': $inner = $element->getValue(); if (strpos($inner, '-----') === false) { $inner = explode("\n", $inner); $single = explode(' | ', trim($inner[0], '|')); $hr = []; foreach ($single as $td) { $length = strlen(trim($td)) + 2; $hr[] = str_repeat('-', $length > 3 ? $length : 3); } $hr = '|' . implode('|', $hr) . '|'; array_splice($inner, 1, 0, $hr); $inner = implode("\n", $inner); } return trim($inner) . "\n\n"; } return $element->getValue(); } /** * @return string[] */ public function getSupportedTags() { return array('table', 'tr', 'thead', 'td', 'tbody'); } }