3 * @file src/Content/Text/BBCode.php
6 namespace Friendica\Content\Text;
11 use Friendica\BaseObject;
12 use Friendica\Content\OEmbed;
13 use Friendica\Content\Smilies;
14 use Friendica\Core\Addon;
15 use Friendica\Core\Cache;
16 use Friendica\Core\Config;
17 use Friendica\Core\L10n;
18 use Friendica\Core\Logger;
19 use Friendica\Core\Protocol;
20 use Friendica\Core\Renderer;
21 use Friendica\Core\System;
22 use Friendica\Model\Contact;
23 use Friendica\Model\Event;
24 use Friendica\Network\Probe;
25 use Friendica\Object\Image;
26 use Friendica\Util\Map;
27 use Friendica\Util\Network;
28 use Friendica\Util\ParseUrl;
29 use Friendica\Util\Proxy as ProxyUtils;
30 use Friendica\Util\Strings;
32 class BBCode extends BaseObject
35 * @brief Fetches attachment data that were generated the old way
37 * @param string $body Message body
39 * 'type' -> Message type ("link", "video", "photo")
40 * 'text' -> Text before the shared message
41 * 'after' -> Text after the shared message
42 * 'image' -> Preview image of the message
43 * 'url' -> Url to the attached message
44 * 'title' -> Title of the attachment
45 * 'description' -> Description of the attachment
47 private static function getOldAttachmentData($body)
51 // Simplify image codes
52 $body = preg_replace("/\[img\=([0-9]*)x([0-9]*)\](.*?)\[\/img\]/ism", '[img]$3[/img]', $body);
54 if (preg_match_all("(\[class=(.*?)\](.*?)\[\/class\])ism", $body, $attached, PREG_SET_ORDER)) {
55 foreach ($attached as $data) {
56 if (!in_array($data[1], ["type-link", "type-video", "type-photo"])) {
60 $post["type"] = substr($data[1], 5);
62 $pos = strpos($body, $data[0]);
64 $post["text"] = trim(substr($body, 0, $pos));
65 $post["after"] = trim(substr($body, $pos + strlen($data[0])));
67 $post["text"] = trim(str_replace($data[0], "", $body));
70 $attacheddata = $data[2];
72 $URLSearchString = "^\[\]";
74 if (preg_match("/\[img\]([$URLSearchString]*)\[\/img\]/ism", $attacheddata, $matches)) {
76 $picturedata = Image::getInfoFromURL($matches[1]);
79 if (($picturedata[0] >= 500) && ($picturedata[0] >= $picturedata[1])) {
80 $post["image"] = $matches[1];
82 $post["preview"] = $matches[1];
87 if (preg_match("/\[bookmark\=([$URLSearchString]*)\](.*?)\[\/bookmark\]/ism", $attacheddata, $matches)) {
88 $post["url"] = $matches[1];
89 $post["title"] = $matches[2];
91 if (!empty($post["url"]) && (in_array($post["type"], ["link", "video"]))
92 && preg_match("/\[url\=([$URLSearchString]*)\](.*?)\[\/url\]/ism", $attacheddata, $matches)) {
93 $post["url"] = $matches[1];
96 // Search for description
97 if (preg_match("/\[quote\](.*?)\[\/quote\]/ism", $attacheddata, $matches)) {
98 $post["description"] = $matches[1];
106 * @brief Fetches attachment data that were generated with the "attachment" element
108 * @param string $body Message body
110 * 'type' -> Message type ("link", "video", "photo")
111 * 'text' -> Text before the shared message
112 * 'after' -> Text after the shared message
113 * 'image' -> Preview image of the message
114 * 'url' -> Url to the attached message
115 * 'title' -> Title of the attachment
116 * 'description' -> Description of the attachment
118 public static function getAttachmentData($body)
122 if (!preg_match("/(.*)\[attachment(.*?)\](.*?)\[\/attachment\](.*)/ism", $body, $match)) {
123 return self::getOldAttachmentData($body);
126 $attributes = $match[2];
128 $data["text"] = trim($match[1]);
131 preg_match("/type='(.*?)'/ism", $attributes, $matches);
132 if (x($matches, 1)) {
133 $type = strtolower($matches[1]);
136 preg_match('/type="(.*?)"/ism', $attributes, $matches);
137 if (x($matches, 1)) {
138 $type = strtolower($matches[1]);
145 if (!in_array($type, ["link", "audio", "photo", "video"])) {
150 $data["type"] = $type;
154 preg_match("/url='(.*?)'/ism", $attributes, $matches);
155 if (x($matches, 1)) {
159 preg_match('/url="(.*?)"/ism', $attributes, $matches);
160 if (x($matches, 1)) {
165 $data["url"] = html_entity_decode($url, ENT_QUOTES, 'UTF-8');
169 preg_match("/title='(.*?)'/ism", $attributes, $matches);
170 if (x($matches, 1)) {
171 $title = $matches[1];
174 preg_match('/title="(.*?)"/ism', $attributes, $matches);
175 if (x($matches, 1)) {
176 $title = $matches[1];
180 $title = self::convert(html_entity_decode($title, ENT_QUOTES, 'UTF-8'), false, true);
181 $title = html_entity_decode($title, ENT_QUOTES, 'UTF-8');
182 $title = str_replace(["[", "]"], ["[", "]"], $title);
183 $data["title"] = $title;
187 preg_match("/image='(.*?)'/ism", $attributes, $matches);
188 if (x($matches, 1)) {
189 $image = $matches[1];
192 preg_match('/image="(.*?)"/ism', $attributes, $matches);
193 if (x($matches, 1)) {
194 $image = $matches[1];
198 $data["image"] = html_entity_decode($image, ENT_QUOTES, 'UTF-8');
202 preg_match("/preview='(.*?)'/ism", $attributes, $matches);
203 if (x($matches, 1)) {
204 $preview = $matches[1];
207 preg_match('/preview="(.*?)"/ism', $attributes, $matches);
208 if (x($matches, 1)) {
209 $preview = $matches[1];
212 if ($preview != "") {
213 $data["preview"] = html_entity_decode($preview, ENT_QUOTES, 'UTF-8');
216 $data["description"] = trim($match[3]);
218 $data["after"] = trim($match[4]);
223 public static function getAttachedData($body, $item = [])
227 - type: link, video, photo
235 $has_title = !empty($item['title']);
236 $plink = (!empty($item['plink']) ? $item['plink'] : '');
237 $post = self::getAttachmentData($body);
239 // if nothing is found, it maybe having an image.
240 if (!isset($post["type"])) {
241 // Simplify image codes
242 $body = preg_replace("/\[img\=([0-9]*)x([0-9]*)\](.*?)\[\/img\]/ism", '[img]$3[/img]', $body);
244 $URLSearchString = "^\[\]";
246 $body = preg_replace("/\[img\=([$URLSearchString]*)\](.*?)\[\/img\]/ism", '[img]$1[/img]', $body);
248 if (preg_match_all("(\[url=([$URLSearchString]*)\]\s*\[img\]([$URLSearchString]*)\[\/img\]\s*\[\/url\])ism", $body, $pictures, PREG_SET_ORDER)) {
249 if ((count($pictures) == 1) && !$has_title) {
250 // Checking, if the link goes to a picture
251 $data = ParseUrl::getSiteinfoCached($pictures[0][1], true);
254 // Sometimes photo posts to the own album are not detected at the start.
255 // So we seem to cannot use the cache for these cases. That's strange.
256 if (($data["type"] != "photo") && strstr($pictures[0][1], "/photos/")) {
257 $data = ParseUrl::getSiteinfo($pictures[0][1], true);
260 if ($data["type"] == "photo") {
261 $post["type"] = "photo";
262 if (isset($data["images"][0])) {
263 $post["image"] = $data["images"][0]["src"];
264 $post["url"] = $data["url"];
266 $post["image"] = $data["url"];
269 $post["preview"] = $pictures[0][2];
270 $post["text"] = str_replace($pictures[0][0], "", $body);
272 $imgdata = Image::getInfoFromURL($pictures[0][1]);
273 if ($imgdata && substr($imgdata["mime"], 0, 6) == "image/") {
274 $post["type"] = "photo";
275 $post["image"] = $pictures[0][1];
276 $post["preview"] = $pictures[0][2];
277 $post["text"] = str_replace($pictures[0][0], "", $body);
280 } elseif (count($pictures) > 0) {
281 $post["type"] = "link";
282 $post["url"] = $plink;
283 $post["image"] = $pictures[0][2];
284 $post["text"] = $body;
286 } elseif (preg_match_all("(\[img\]([$URLSearchString]*)\[\/img\])ism", $body, $pictures, PREG_SET_ORDER)) {
287 if ((count($pictures) == 1) && !$has_title) {
288 $post["type"] = "photo";
289 $post["image"] = $pictures[0][1];
290 $post["text"] = str_replace($pictures[0][0], "", $body);
291 } elseif (count($pictures) > 0) {
292 $post["type"] = "link";
293 $post["url"] = $plink;
294 $post["image"] = $pictures[0][1];
295 $post["text"] = $body;
299 // Test for the external links
300 preg_match_all("(\[url\]([$URLSearchString]*)\[\/url\])ism", $body, $links1, PREG_SET_ORDER);
301 preg_match_all("(\[url\=([$URLSearchString]*)\].*?\[\/url\])ism", $body, $links2, PREG_SET_ORDER);
303 $links = array_merge($links1, $links2);
305 // If there is only a single one, then use it.
306 // This should cover link posts via API.
307 if ((count($links) == 1) && !isset($post["preview"]) && !$has_title) {
308 $post["type"] = "link";
309 $post["text"] = trim($body);
310 $post["url"] = $links[0][1];
313 // Now count the number of external media links
314 preg_match_all("(\[vimeo\](.*?)\[\/vimeo\])ism", $body, $links1, PREG_SET_ORDER);
315 preg_match_all("(\[youtube\\](.*?)\[\/youtube\\])ism", $body, $links2, PREG_SET_ORDER);
316 preg_match_all("(\[video\\](.*?)\[\/video\\])ism", $body, $links3, PREG_SET_ORDER);
317 preg_match_all("(\[audio\\](.*?)\[\/audio\\])ism", $body, $links4, PREG_SET_ORDER);
319 // Add them to the other external links
320 $links = array_merge($links, $links1, $links2, $links3, $links4);
322 // Are there more than one?
323 if (count($links) > 1) {
324 // The post will be the type "text", which means a blog post
325 unset($post["type"]);
326 $post["url"] = $plink;
329 if (!isset($post["type"])) {
330 $post["type"] = "text";
331 $post["text"] = trim($body);
333 } elseif (isset($post["url"]) && ($post["type"] == "video")) {
334 $data = ParseUrl::getSiteinfoCached($post["url"], true);
336 if (isset($data["images"][0])) {
337 $post["image"] = $data["images"][0]["src"];
345 * @brief Converts a BBCode text into plaintext
347 * @param bool $keep_urls Whether to keep URLs in the resulting plaintext
351 public static function toPlaintext($text, $keep_urls = true)
353 $naked_text = preg_replace('/\[(.+?)\]\s*/','', $text);
355 $naked_text = preg_replace('#https?\://[^\s<]+[^\s\.\)]#i', '', $naked_text);
361 private static function proxyUrl($image, $simplehtml = false)
363 // Only send proxied pictures to API and for internal display
364 if (in_array($simplehtml, [false, 2])) {
365 return ProxyUtils::proxifyUrl($image);
371 public static function scaleExternalImages($srctext, $include_link = true, $scale_replace = false)
373 // Suppress "view full size"
374 if (intval(Config::get('system', 'no_view_full_size'))) {
375 $include_link = false;
378 // Picture addresses can contain special characters
379 $s = htmlspecialchars_decode($srctext);
382 $c = preg_match_all('/\[img.*?\](.*?)\[\/img\]/ism', $s, $matches, PREG_SET_ORDER);
384 foreach ($matches as $mtch) {
385 Logger::log('scale_external_image: ' . $mtch[1]);
387 $hostname = str_replace('www.', '', substr(System::baseUrl(), strpos(System::baseUrl(), '://') + 3));
388 if (stristr($mtch[1], $hostname)) {
392 // $scale_replace, if passed, is an array of two elements. The
393 // first is the name of the full-size image. The second is the
394 // name of a remote, scaled-down version of the full size image.
395 // This allows Friendica to display the smaller remote image if
396 // one exists, while still linking to the full-size image
397 if ($scale_replace) {
398 $scaled = str_replace($scale_replace[0], $scale_replace[1], $mtch[1]);
402 $i = Network::fetchUrl($scaled);
407 // guess mimetype from headers or filename
408 $type = Image::guessType($mtch[1], true);
411 $Image = new Image($i, $type);
412 if ($Image->isValid()) {
413 $orig_width = $Image->getWidth();
414 $orig_height = $Image->getHeight();
416 if ($orig_width > 640 || $orig_height > 640) {
417 $Image->scaleDown(640);
418 $new_width = $Image->getWidth();
419 $new_height = $Image->getHeight();
420 Logger::log('scale_external_images: ' . $orig_width . '->' . $new_width . 'w ' . $orig_height . '->' . $new_height . 'h' . ' match: ' . $mtch[0], Logger::DEBUG);
423 '[img=' . $new_width . 'x' . $new_height. ']' . $scaled . '[/img]'
424 . "\n" . (($include_link)
425 ? '[url=' . $mtch[1] . ']' . L10n::t('view full size') . '[/url]' . "\n"
429 Logger::log('scale_external_images: new string: ' . $s, Logger::DEBUG);
436 // replace the special char encoding
437 $s = htmlspecialchars($s, ENT_NOQUOTES, 'UTF-8');
442 * The purpose of this function is to apply system message length limits to
443 * imported messages without including any embedded photos in the length
445 * @brief Truncates imported message body string length to max_import_size
446 * @param string $body
449 public static function limitBodySize($body)
451 $maxlen = Config::get('config', 'max_import_size', 0);
453 // If the length of the body, including the embedded images, is smaller
454 // than the maximum, then don't waste time looking for the images
455 if ($maxlen && (strlen($body) > $maxlen)) {
457 Logger::log('the total body length exceeds the limit', Logger::DEBUG);
463 $img_start = strpos($orig_body, '[img');
464 $img_st_close = ($img_start !== false ? strpos(substr($orig_body, $img_start), ']') : false);
465 $img_end = ($img_start !== false ? strpos(substr($orig_body, $img_start), '[/img]') : false);
466 while (($img_st_close !== false) && ($img_end !== false)) {
468 $img_st_close++; // make it point to AFTER the closing bracket
469 $img_end += $img_start;
470 $img_end += strlen('[/img]');
472 if (!strcmp(substr($orig_body, $img_start + $img_st_close, 5), 'data:')) {
473 // This is an embedded image
475 if (($textlen + $img_start) > $maxlen) {
476 if ($textlen < $maxlen) {
477 Logger::log('the limit happens before an embedded image', Logger::DEBUG);
478 $new_body = $new_body . substr($orig_body, 0, $maxlen - $textlen);
482 $new_body = $new_body . substr($orig_body, 0, $img_start);
483 $textlen += $img_start;
486 $new_body = $new_body . substr($orig_body, $img_start, $img_end - $img_start);
489 if (($textlen + $img_end) > $maxlen) {
490 if ($textlen < $maxlen) {
491 Logger::log('the limit happens before the end of a non-embedded image', Logger::DEBUG);
492 $new_body = $new_body . substr($orig_body, 0, $maxlen - $textlen);
496 $new_body = $new_body . substr($orig_body, 0, $img_end);
497 $textlen += $img_end;
500 $orig_body = substr($orig_body, $img_end);
502 if ($orig_body === false) {
503 // in case the body ends on a closing image tag
507 $img_start = strpos($orig_body, '[img');
508 $img_st_close = ($img_start !== false ? strpos(substr($orig_body, $img_start), ']') : false);
509 $img_end = ($img_start !== false ? strpos(substr($orig_body, $img_start), '[/img]') : false);
512 if (($textlen + strlen($orig_body)) > $maxlen) {
513 if ($textlen < $maxlen) {
514 Logger::log('the limit happens after the end of the last image', Logger::DEBUG);
515 $new_body = $new_body . substr($orig_body, 0, $maxlen - $textlen);
518 Logger::log('the text size with embedded images extracted did not violate the limit', Logger::DEBUG);
519 $new_body = $new_body . $orig_body;
529 * Processes [attachment] tags
531 * Note: Can produce a [bookmark] tag in the returned string
533 * @brief Processes [attachment] tags
534 * @param string $return
535 * @param bool|int $simplehtml
536 * @param bool $tryoembed
539 private static function convertAttachment($return, $simplehtml = false, $tryoembed = true)
541 $data = self::getAttachmentData($return);
542 if (empty($data) || empty($data["url"])) {
546 if (isset($data["title"])) {
547 $data["title"] = strip_tags($data["title"]);
548 $data["title"] = str_replace(["http://", "https://"], "", $data["title"]);
550 $data["title"] = null;
553 if (((strpos($data["text"], "[img=") !== false) || (strpos($data["text"], "[img]") !== false) || Config::get('system', 'always_show_preview')) && !empty($data["image"])) {
554 $data["preview"] = $data["image"];
559 if ($simplehtml == 7) {
560 $return = self::convertUrlForOStatus($data["url"]);
561 } elseif (($simplehtml != 4) && ($simplehtml != 0)) {
562 $return = sprintf('<a href="%s" target="_blank">%s</a><br>', $data["url"], $data["title"]);
565 if ($tryoembed && OEmbed::isAllowedURL($data['url'])) {
566 $return = OEmbed::getHTML($data['url'], $data['title']);
568 throw new Exception('OEmbed is disabled for this attachment.');
570 } catch (Exception $e) {
571 $data["title"] = defaults($data, 'title', $data['url']);
573 if ($simplehtml != 4) {
574 $return = sprintf('<div class="type-%s">', $data["type"]);
577 if (!empty($data['title']) && !empty($data['url'])) {
578 if (!empty($data["image"]) && empty($data["text"]) && ($data["type"] == "photo")) {
579 $return .= sprintf('<a href="%s" target="_blank"><img src="%s" alt="" title="%s" class="attachment-image" /></a>', $data["url"], self::proxyUrl($data["image"], $simplehtml), $data["title"]);
581 if (!empty($data["image"])) {
582 $return .= sprintf('<a href="%s" target="_blank"><img src="%s" alt="" title="%s" class="attachment-image" /></a><br />', $data["url"], self::proxyUrl($data["image"], $simplehtml), $data["title"]);
583 } elseif (!empty($data["preview"])) {
584 $return .= sprintf('<a href="%s" target="_blank"><img src="%s" alt="" title="%s" class="attachment-preview" /></a><br />', $data["url"], self::proxyUrl($data["preview"], $simplehtml), $data["title"]);
586 $return .= sprintf('<h4><a href="%s">%s</a></h4>', $data['url'], $data['title']);
590 if (!empty($data["description"]) && $data["description"] != $data["title"]) {
591 // Sanitize the HTML by converting it to BBCode
592 $bbcode = HTML::toBBCode($data["description"]);
593 $return .= sprintf('<blockquote>%s</blockquote>', trim(self::convert($bbcode)));
596 if (!empty($data['url'])) {
597 $return .= sprintf('<sup><a href="%s">%s</a></sup>', $data['url'], parse_url($data['url'], PHP_URL_HOST));
600 if ($simplehtml != 4) {
606 return trim(defaults($data, 'text', '') . ' ' . $return . ' ' . defaults($data, 'after', ''));
609 public static function removeShareInformation($Text, $plaintext = false, $nolink = false)
611 $data = self::getAttachmentData($Text);
616 return $data["text"] . defaults($data, 'after', '');
619 $title = htmlentities(defaults($data, 'title', ''), ENT_QUOTES, 'UTF-8', false);
620 $text = htmlentities($data["text"], ENT_QUOTES, 'UTF-8', false);
621 if ($plaintext || (($title != "") && strstr($text, $title))) {
622 $data["title"] = $data["url"];
623 } elseif (($text != "") && strstr($title, $text)) {
624 $data["text"] = $data["title"];
625 $data["title"] = $data["url"];
628 if (($data["text"] == "") && ($data["title"] != "") && ($data["url"] == "")) {
629 return $data["title"] . $data["after"];
632 // If the link already is included in the post, don't add it again
633 if (!empty($data["url"]) && strpos($data["text"], $data["url"])) {
634 return $data["text"] . $data["after"];
637 $text = $data["text"];
639 if (!empty($data["url"]) && !empty($data["title"])) {
640 $text .= "\n[url=" . $data["url"] . "]" . $data["title"] . "[/url]";
641 } elseif (!empty($data["url"])) {
642 $text .= "\n[url]" . $data["url"] . "[/url]";
645 return $text . "\n" . $data["after"];
649 * Converts [url] BBCodes in a format that looks fine on Mastodon. (callback function)
651 * @brief Converts [url] BBCodes in a format that looks fine on Mastodon. (callback function)
652 * @param array $match Array with the matching values
653 * @return string reformatted link including HTML codes
655 private static function convertUrlForOStatusCallback($match)
659 if (isset($match[2]) && ($match[1] != $match[2])) {
663 $parts = parse_url($url);
664 if (!isset($parts['scheme'])) {
668 return self::convertUrlForOStatus($url);
672 * @brief Converts [url] BBCodes in a format that looks fine on OStatus systems.
673 * @param string $url URL that is about to be reformatted
674 * @return string reformatted link including HTML codes
676 private static function convertUrlForOStatus($url)
678 $parts = parse_url($url);
679 $scheme = $parts['scheme'] . '://';
680 $styled_url = str_replace($scheme, '', $url);
682 if (strlen($styled_url) > 30) {
683 $styled_url = substr($styled_url, 0, 30) . "…";
686 $html = '<a href="%s" target="_blank">%s</a>';
688 return sprintf($html, $url, $styled_url);
692 * [noparse][i]italic[/i][/noparse] turns into
693 * [noparse][ i ]italic[ /i ][/noparse],
694 * to hide them from parser.
696 private static function escapeNoparseCallback($match)
698 $whole_match = $match[0];
699 $captured = $match[1];
700 $spacefied = preg_replace("/\[(.*?)\]/", "[ $1 ]", $captured);
701 $new_str = str_replace($captured, $spacefied, $whole_match);
706 * The previously spacefied [noparse][ i ]italic[ /i ][/noparse],
707 * now turns back and the [noparse] tags are trimed
708 * returning [i]italic[/i]
710 private static function unescapeNoparseCallback($match)
712 $captured = $match[1];
713 $unspacefied = preg_replace("/\[ (.*?)\ ]/", "[$1]", $captured);
718 * Returns the bracket character positions of a set of opening and closing BBCode tags, optionally skipping first
721 * @param string $text Text to search
722 * @param string $name Tag name
723 * @param int $occurrences Number of first occurrences to skip
724 * @return boolean|array
726 public static function getTagPosition($text, $name, $occurrences = 0)
728 if ($occurrences < 0) {
733 for ($i = 0; $i <= $occurrences; $i++) {
734 if ($start_open !== false) {
735 $start_open = strpos($text, '[' . $name, $start_open + 1); // allow [name= type tags
739 if ($start_open === false) {
743 $start_equal = strpos($text, '=', $start_open);
744 $start_close = strpos($text, ']', $start_open);
746 if ($start_close === false) {
752 $end_open = strpos($text, '[/' . $name . ']', $start_close);
754 if ($end_open === false) {
760 'open' => $start_open,
761 'close' => $start_close
765 'close' => $end_open + strlen('[/' . $name . ']')
769 if ($start_equal !== false) {
770 $res['start']['equal'] = $start_equal + 1;
777 * Performs a preg_replace within the boundaries of all named BBCode tags in a text
779 * @param type $pattern Preg pattern string
780 * @param type $replace Preg replace string
781 * @param type $name BBCode tag name
782 * @param type $text Text to search
785 public static function pregReplaceInTag($pattern, $replace, $name, $text)
788 $pos = self::getTagPosition($text, $name, $occurrences);
789 while ($pos !== false && $occurrences++ < 1000) {
790 $start = substr($text, 0, $pos['start']['open']);
791 $subject = substr($text, $pos['start']['open'], $pos['end']['close'] - $pos['start']['open']);
792 $end = substr($text, $pos['end']['close']);
793 if ($end === false) {
797 $subject = preg_replace($pattern, $replace, $subject);
798 $text = $start . $subject . $end;
800 $pos = self::getTagPosition($text, $name, $occurrences);
806 private static function extractImagesFromItemBody($body)
813 $img_start = strpos($orig_body, '[img');
814 $img_st_close = ($img_start !== false ? strpos(substr($orig_body, $img_start), ']') : false);
815 $img_end = ($img_start !== false ? strpos(substr($orig_body, $img_start), '[/img]') : false);
816 while (($img_st_close !== false) && ($img_end !== false)) {
817 $img_st_close++; // make it point to AFTER the closing bracket
818 $img_end += $img_start;
820 if (!strcmp(substr($orig_body, $img_start + $img_st_close, 5), 'data:')) {
821 // This is an embedded image
822 $saved_image[$cnt] = substr($orig_body, $img_start + $img_st_close, $img_end - ($img_start + $img_st_close));
823 $new_body = $new_body . substr($orig_body, 0, $img_start) . '[$#saved_image' . $cnt . '#$]';
827 $new_body = $new_body . substr($orig_body, 0, $img_end + strlen('[/img]'));
830 $orig_body = substr($orig_body, $img_end + strlen('[/img]'));
832 if ($orig_body === false) {
833 // in case the body ends on a closing image tag
837 $img_start = strpos($orig_body, '[img');
838 $img_st_close = ($img_start !== false ? strpos(substr($orig_body, $img_start), ']') : false);
839 $img_end = ($img_start !== false ? strpos(substr($orig_body, $img_start), '[/img]') : false);
842 $new_body = $new_body . $orig_body;
844 return ['body' => $new_body, 'images' => $saved_image];
847 private static function interpolateSavedImagesIntoItemBody($body, array $images)
852 foreach ($images as $image) {
853 // We're depending on the property of 'foreach' (specified on the PHP website) that
854 // it loops over the array starting from the first element and going sequentially
855 // to the last element
856 $newbody = str_replace('[$#saved_image' . $cnt . '#$]',
857 '<img src="' . self::proxyUrl($image) . '" alt="' . L10n::t('Image/photo') . '" />', $newbody);
865 * This function converts a [share] block to text according to a provided callback function whose signature is:
867 * function(array $attributes, array $author_contact, string $content, boolean $is_quote_share): string
870 * - $attributes is an array of attributes of the [share] block itself. Missing keys will be completed by the contact
872 * - $author_contact is a contact record array
873 * - $content is the inner content of the [share] block
874 * - $is_quote_share indicates whether there's any content before the [share] block
875 * - Return value is the string that should replace the [share] block in the provided text
877 * This function is intended to be used by addon connector to format a share block like the target network is expecting it.
879 * @param string $text A BBCode string
880 * @param callable $callback
881 * @return string The BBCode string with all [share] blocks replaced
883 public static function convertShare($text, callable $callback)
885 $return = preg_replace_callback(
886 "/(.*?)\[share(.*?)\](.*?)\[\/share\]/ism",
887 function ($match) use ($callback) {
888 $attribute_string = $match[2];
891 foreach(['author', 'profile', 'avatar', 'link', 'posted'] as $field) {
892 preg_match("/$field=(['\"])(.+?)\\1/ism", $attribute_string, $matches);
893 $attributes[$field] = html_entity_decode(defaults($matches, 2, ''), ENT_QUOTES, 'UTF-8');
896 // We only call this so that a previously unknown contact can be added.
897 // This is important for the function "Model\Contact::getDetailsByURL()".
898 // This function then can fetch an entry from the contact table.
899 Contact::getIdForURL($attributes['profile'], 0, true);
901 $author_contact = Contact::getDetailsByURL($attributes['profile']);
902 $author_contact['addr'] = defaults($author_contact, 'addr' , Protocol::getAddrFromProfileUrl($attributes['profile']));
904 $attributes['author'] = defaults($author_contact, 'name' , $attributes['author']);
905 $attributes['avatar'] = defaults($author_contact, 'micro', $attributes['avatar']);
906 $attributes['profile'] = defaults($author_contact, 'url' , $attributes['profile']);
908 if ($attributes['avatar']) {
909 $attributes['avatar'] = ProxyUtils::proxifyUrl($attributes['avatar'], false, ProxyUtils::SIZE_THUMB);
912 return $match[1] . $callback($attributes, $author_contact, $match[3], trim($match[1]) != '');
921 * Default [share] tag conversion callback
923 * Note: Can produce a [bookmark] tag in the output
925 * @see BBCode::convertShare()
926 * @param array $attributes [share] block attribute values
927 * @param array $author_contact Contact row of the shared author
928 * @param string $content Inner content of the [share] block
929 * @param boolean $is_quote_share Whether there is content before the [share] block
930 * @param integer $simplehtml Mysterious integer value depending on the target network/formatting style
933 private static function convertShareCallback(array $attributes, array $author_contact, $content, $is_quote_share, $simplehtml)
935 $mention = Protocol::formatMention($attributes['profile'], $attributes['author']);
937 switch ($simplehtml) {
939 $text = ($is_quote_share? '<br />' : '') . '<p>' . html_entity_decode('♲ ', ENT_QUOTES, 'UTF-8') . ' <a href="' . $attributes['profile'] . '">' . $mention . '</a>: </p>' . "\n" . '«' . $content . '»';
942 $text = ($is_quote_share? '<br />' : '') . '<p>' . html_entity_decode('♲ ', ENT_QUOTES, 'UTF-8') . ' ' . $author_contact['addr'] . ': </p>' . "\n" . $content;
945 $headline = '<p><b>' . html_entity_decode('♲ ', ENT_QUOTES, 'UTF-8') . $mention . ':</b></p>' . "\n";
947 if (stripos(Strings::normaliseLink($attributes['link']), 'http://twitter.com/') === 0) {
948 $text = ($is_quote_share? '<hr />' : '') . '<p><a href="' . $attributes['link'] . '">' . $attributes['link'] . '</a></p>' . "\n";
950 $text = ($is_quote_share? '<hr />' : '') . $headline . '<blockquote>' . trim($content) . '</blockquote>' . "\n";
952 if ($attributes['link'] != '') {
953 $text .= '<p><a href="' . $attributes['link'] . '">[l]</a></p>' . "\n";
959 $headline = '<p><b>' . html_entity_decode('♲ ', ENT_QUOTES, 'UTF-8');
960 $headline .= L10n::t('<a href="%1$s" target="_blank">%2$s</a> %3$s', $attributes['link'], $mention, $attributes['posted']);
961 $headline .= ':</b></p>' . "\n";
963 $text = ($is_quote_share? '<hr />' : '') . $headline . '<blockquote class="shared_content">' . trim($content) . '</blockquote>' . "\n";
967 $text = ($is_quote_share? '<br />' : '') . '<p>' . html_entity_decode('♲ ', ENT_QUOTES, 'UTF-8') . ' ' . $author_contact['addr'] . ': </p>' . "\n" . $content;
969 case 7: // statusnet/GNU Social
970 $text = ($is_quote_share? '<br />' : '') . '<p>' . html_entity_decode('♲ ', ENT_QUOTES, 'UTF-8') . ' @' . $author_contact['addr'] . ': ' . $content . '</p>' . "\n";
973 $text = ($is_quote_share? '<br />' : '') . '<p>' . html_entity_decode('♲ ', ENT_QUOTES, 'UTF-8') . ' ' . $author_contact['addr'] . ': </p>' . "\n";
974 $text .= '<p>' . $content . '</p>' . "\n";
976 if ($attributes['link'] != '') {
977 $text .= '<p>' . $attributes['link'] . '</p>';
981 // Transforms quoted tweets in rich attachments to avoid nested tweets
982 if (stripos(Strings::normaliseLink($attributes['link']), 'http://twitter.com/') === 0 && OEmbed::isAllowedURL($attributes['link'])) {
984 $text = ($is_quote_share? '<br />' : '') . OEmbed::getHTML($attributes['link']);
985 } catch (Exception $e) {
986 $text = ($is_quote_share? '<br />' : '') . sprintf('[bookmark=%s]%s[/bookmark]', $attributes['link'], $content);
989 $text = ($is_quote_share? "\n" : '');
991 $tpl = Renderer::getMarkupTemplate('shared_content.tpl');
992 $text .= Renderer::replaceMacros($tpl, [
993 '$profile' => $attributes['profile'],
994 '$avatar' => $attributes['avatar'],
995 '$author' => $attributes['author'],
996 '$link' => $attributes['link'],
997 '$posted' => $attributes['posted'],
998 '$content' => trim($content)
1007 private static function removePictureLinksCallback($match)
1009 $text = Cache::get($match[1]);
1011 if (is_null($text)) {
1012 $a = self::getApp();
1014 $stamp1 = microtime(true);
1016 $ch = @curl_init($match[1]);
1017 @curl_setopt($ch, CURLOPT_NOBODY, true);
1018 @curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
1019 @curl_setopt($ch, CURLOPT_USERAGENT, $a->getUserAgent());
1021 $curl_info = @curl_getinfo($ch);
1023 $a->saveTimestamp($stamp1, "network");
1025 if (substr($curl_info["content_type"], 0, 6) == "image/") {
1026 $text = "[url=" . $match[1] . "]" . $match[1] . "[/url]";
1028 $text = "[url=" . $match[2] . "]" . $match[2] . "[/url]";
1030 // if its not a picture then look if its a page that contains a picture link
1031 $body = Network::fetchUrl($match[1]);
1033 $doc = new DOMDocument();
1034 @$doc->loadHTML($body);
1035 $xpath = new DOMXPath($doc);
1036 $list = $xpath->query("//meta[@name]");
1037 foreach ($list as $node) {
1040 if ($node->attributes->length) {
1041 foreach ($node->attributes as $attribute) {
1042 $attr[$attribute->name] = $attribute->value;
1046 if (strtolower($attr["name"]) == "twitter:image") {
1047 $text = "[url=" . $attr["content"] . "]" . $attr["content"] . "[/url]";
1051 Cache::set($match[1], $text);
1057 private static function expandLinksCallback($match)
1059 if (($match[3] == "") || ($match[2] == $match[3]) || stristr($match[2], $match[3])) {
1060 return ($match[1] . "[url]" . $match[2] . "[/url]");
1062 return ($match[1] . $match[3] . " [url]" . $match[2] . "[/url]");
1066 private static function cleanPictureLinksCallback($match)
1068 $text = Cache::get($match[1]);
1070 if (is_null($text)) {
1071 $a = self::getApp();
1073 $stamp1 = microtime(true);
1075 $ch = @curl_init($match[1]);
1076 @curl_setopt($ch, CURLOPT_NOBODY, true);
1077 @curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
1078 @curl_setopt($ch, CURLOPT_USERAGENT, $a->getUserAgent());
1080 $curl_info = @curl_getinfo($ch);
1082 $a->saveTimestamp($stamp1, "network");
1084 // if its a link to a picture then embed this picture
1085 if (substr($curl_info["content_type"], 0, 6) == "image/") {
1086 $text = "[img]" . $match[1] . "[/img]";
1088 $text = "[img]" . $match[2] . "[/img]";
1090 // if its not a picture then look if its a page that contains a picture link
1091 $body = Network::fetchUrl($match[1]);
1093 $doc = new DOMDocument();
1094 @$doc->loadHTML($body);
1095 $xpath = new DOMXPath($doc);
1096 $list = $xpath->query("//meta[@name]");
1097 foreach ($list as $node) {
1099 if ($node->attributes->length) {
1100 foreach ($node->attributes as $attribute) {
1101 $attr[$attribute->name] = $attribute->value;
1105 if (strtolower($attr["name"]) == "twitter:image") {
1106 $text = "[img]" . $attr["content"] . "[/img]";
1110 Cache::set($match[1], $text);
1116 public static function cleanPictureLinks($text)
1118 $return = preg_replace_callback("&\[url=([^\[\]]*)\]\[img\](.*)\[\/img\]\[\/url\]&Usi", 'self::cleanPictureLinksCallback', $text);
1123 * @brief Converts a BBCode message to HTML message
1125 * BBcode 2 HTML was written by WAY2WEB.net
1126 * extended to work with Mistpark/Friendica - Mike Macgirvin
1128 * Simple HTML values meaning:
1129 * - 0: Friendica display
1131 * - 2: Used for Google+, Windows Phone push, Friendica API
1132 * - 3: Used before converting to Markdown in bb2diaspora.php
1133 * - 4: Used for WordPress, Libertree (before Markdown), pump.io and tumblr
1136 * - 7: Used for dfrn, OStatus
1137 * - 8: Used for WP backlink text setting
1139 * @param string $text
1140 * @param bool $try_oembed
1141 * @param int $simple_html
1142 * @param bool $for_plaintext
1145 public static function convert($text, $try_oembed = true, $simple_html = false, $for_plaintext = false)
1147 $a = self::getApp();
1150 * preg_match_callback function to replace potential Oembed tags with Oembed content
1152 * $match[0] = [tag]$url[/tag] or [tag=$url]$title[/tag]
1154 * $match[2] = $title or absent
1156 $try_oembed_callback = function ($match)
1159 $title = defaults($match, 2, null);
1162 $return = OEmbed::getHTML($url, $title);
1163 } catch (Exception $ex) {
1164 $return = $match[0];
1170 // Extracting multi-line code blocks before the whitespace processing
1173 $text = preg_replace_callback("#\[code(?:=([^\]]*))?\](.*?)\[\/code\]#is",
1174 function ($matches) use (&$codeblocks) {
1175 $return = $matches[0];
1176 if (strpos($matches[2], "\n") !== false) {
1177 $return = '#codeblock-' . count($codeblocks) . '#';
1179 $codeblocks[] = '<pre><code class="language-' . trim($matches[1]) . '">' . trim($matches[2], "\n\r") . '</code></pre>';
1186 // Hide all [noparse] contained bbtags by spacefying them
1187 // POSSIBLE BUG --> Will the 'preg' functions crash if there's an embedded image?
1189 $text = preg_replace_callback("/\[noparse\](.*?)\[\/noparse\]/ism", 'self::escapeNoparseCallback', $text);
1190 $text = preg_replace_callback("/\[nobb\](.*?)\[\/nobb\]/ism", 'self::escapeNoparseCallback', $text);
1191 $text = preg_replace_callback("/\[pre\](.*?)\[\/pre\]/ism", 'self::escapeNoparseCallback', $text);
1193 // Remove the abstract element. It is a non visible element.
1194 $text = self::stripAbstract($text);
1196 // Move all spaces out of the tags
1197 $text = preg_replace("/\[(\w*)\](\s*)/ism", '$2[$1]', $text);
1198 $text = preg_replace("/(\s*)\[\/(\w*)\]/ism", '[/$2]$1', $text);
1200 // Extract the private images which use data urls since preg has issues with
1201 // large data sizes. Stash them away while we do bbcode conversion, and then put them back
1202 // in after we've done all the regex matching. We cannot use any preg functions to do this.
1204 $extracted = self::extractImagesFromItemBody($text);
1205 $text = $extracted['body'];
1206 $saved_image = $extracted['images'];
1208 // If we find any event code, turn it into an event.
1209 // After we're finished processing the bbcode we'll
1210 // replace all of the event code with a reformatted version.
1212 $ev = Event::fromBBCode($text);
1214 // Replace any html brackets with HTML Entities to prevent executing HTML or script
1215 // Don't use strip_tags here because it breaks [url] search by replacing & with amp
1217 $text = str_replace("<", "<", $text);
1218 $text = str_replace(">", ">", $text);
1220 // remove some newlines before the general conversion
1221 $text = preg_replace("/\s?\[share(.*?)\]\s?(.*?)\s?\[\/share\]\s?/ism", "[share$1]$2[/share]", $text);
1222 $text = preg_replace("/\s?\[quote(.*?)\]\s?(.*?)\s?\[\/quote\]\s?/ism", "[quote$1]$2[/quote]", $text);
1224 // when the content is meant exporting to other systems then remove the avatar picture since this doesn't really look good on these systems
1226 $text = preg_replace("/\[share(.*?)avatar\s?=\s?'.*?'\s?(.*?)\]\s?(.*?)\s?\[\/share\]\s?/ism", "\n[share$1$2]$3[/share]", $text);
1229 // Convert new line chars to html <br /> tags
1231 // nlbr seems to be hopelessly messed up
1232 // $Text = nl2br($Text);
1234 // We'll emulate it.
1236 $text = trim($text);
1237 $text = str_replace("\r\n", "\n", $text);
1239 // removing multiplicated newlines
1240 if (Config::get("system", "remove_multiplicated_lines")) {
1241 $search = ["\n\n\n", "\n ", " \n", "[/quote]\n\n", "\n[/quote]", "[/li]\n", "\n[li]", "\n[ul]", "[/ul]\n", "\n\n[share ", "[/attachment]\n",
1242 "\n[h1]", "[/h1]\n", "\n[h2]", "[/h2]\n", "\n[h3]", "[/h3]\n", "\n[h4]", "[/h4]\n", "\n[h5]", "[/h5]\n", "\n[h6]", "[/h6]\n"];
1243 $replace = ["\n\n", "\n", "\n", "[/quote]\n", "[/quote]", "[/li]", "[li]", "[ul]", "[/ul]", "\n[share ", "[/attachment]",
1244 "[h1]", "[/h1]", "[h2]", "[/h2]", "[h3]", "[/h3]", "[h4]", "[/h4]", "[h5]", "[/h5]", "[h6]", "[/h6]"];
1247 $text = str_replace($search, $replace, $text);
1248 } while ($oldtext != $text);
1251 // Set up the parameters for a URL search string
1252 $URLSearchString = "^\[\]";
1253 // Set up the parameters for a MAIL search string
1254 $MAILSearchString = $URLSearchString;
1256 // if the HTML is used to generate plain text, then don't do this search, but replace all URL of that kind to text
1257 if (!$for_plaintext) {
1258 // Autolink feature (thanks to http://code.seebz.net/p/autolink-php/)
1259 // Currently disabled, since the function is too greedy
1260 // $autolink_regex = "`([^\]\=\"']|^)(https?\://[^\s<]+[^\s<\.\)])`ism";
1261 $autolink_regex = "/([^\]\='".'"'."]|^)(https?\:\/\/[a-zA-Z0-9\:\/\-\?\&\;\.\=\_\~\#\%\$\!\+\,]+)/ism";
1262 $text = preg_replace($autolink_regex, '$1[url]$2[/url]', $text);
1263 if ($simple_html == 7) {
1264 $text = preg_replace_callback("/\[url\]([$URLSearchString]*)\[\/url\]/ism", 'self::convertUrlForOStatusCallback', $text);
1265 $text = preg_replace_callback("/\[url\=([$URLSearchString]*)\]([$URLSearchString]*)\[\/url\]/ism", 'self::convertUrlForOStatusCallback', $text);
1268 $text = preg_replace("(\[url\]([$URLSearchString]*)\[\/url\])ism", " $1 ", $text);
1269 $text = preg_replace_callback("&\[url=([^\[\]]*)\]\[img\](.*)\[\/img\]\[\/url\]&Usi", 'self::removePictureLinksCallback', $text);
1273 // Handle attached links or videos
1274 $text = self::convertAttachment($text, $simple_html, $try_oembed);
1276 $text = str_replace(["\r","\n"], ['<br />', '<br />'], $text);
1278 // Remove all hashtag addresses
1279 if ((!$try_oembed || $simple_html) && !in_array($simple_html, [3, 7])) {
1280 $text = preg_replace("/([#@!])\[url\=([$URLSearchString]*)\](.*?)\[\/url\]/ism", '$1$3', $text);
1281 } elseif ($simple_html == 3) {
1282 // The ! is converted to @ since Diaspora only understands the @
1283 $text = preg_replace("/([@!])\[url\=([$URLSearchString]*)\](.*?)\[\/url\]/ism",
1284 '@<a href="$2">$3</a>',
1286 } elseif ($simple_html == 7) {
1287 $text = preg_replace("/([@!])\[url\=([$URLSearchString]*)\](.*?)\[\/url\]/ism",
1288 '$1<span class="vcard"><a href="$2" class="url" title="$3"><span class="fn nickname mention">$3</span></a></span>',
1290 } elseif (!$simple_html) {
1291 $text = preg_replace("/([@!])\[url\=([$URLSearchString]*)\](.*?)\[\/url\]/ism",
1292 '$1<a href="$2" class="userinfo mention" title="$3">$3</a>',
1296 // Bookmarks in red - will be converted to bookmarks in friendica
1297 $text = preg_replace("/#\^\[url\]([$URLSearchString]*)\[\/url\]/ism", '[bookmark=$1]$1[/bookmark]', $text);
1298 $text = preg_replace("/#\^\[url\=([$URLSearchString]*)\](.*?)\[\/url\]/ism", '[bookmark=$1]$2[/bookmark]', $text);
1299 $text = preg_replace("/#\[url\=[$URLSearchString]*\]\^\[\/url\]\[url\=([$URLSearchString]*)\](.*?)\[\/url\]/i",
1300 "[bookmark=$1]$2[/bookmark]", $text);
1302 if (in_array($simple_html, [2, 6, 7, 8, 9])) {
1303 $text = preg_replace_callback("/([^#@!])\[url\=([^\]]*)\](.*?)\[\/url\]/ism", "self::expandLinksCallback", $text);
1304 //$Text = preg_replace("/[^#@!]\[url\=([^\]]*)\](.*?)\[\/url\]/ism", ' $2 [url]$1[/url]', $Text);
1305 $text = preg_replace("/\[bookmark\=([^\]]*)\](.*?)\[\/bookmark\]/ism", ' $2 [url]$1[/url]',$text);
1308 if ($simple_html == 5) {
1309 $text = preg_replace("/[^#@!]\[url\=([$URLSearchString]*)\](.*?)\[\/url\]/ism", '[url]$1[/url]', $text);
1312 // Perform URL Search
1314 $text = preg_replace_callback("/\[bookmark\=([^\]]*)\](.*?)\[\/bookmark\]/ism", $try_oembed_callback, $text);
1317 if ($simple_html == 5) {
1318 $text = preg_replace("/\[bookmark\=([^\]]*)\](.*?)\[\/bookmark\]/ism", '[url]$1[/url]', $text);
1320 $text = preg_replace("/\[bookmark\=([^\]]*)\](.*?)\[\/bookmark\]/ism", '[url=$1]$2[/url]', $text);
1323 // Handle Diaspora posts
1324 $text = preg_replace_callback(
1325 "&\[url=/?posts/([^\[\]]*)\](.*)\[\/url\]&Usi",
1327 return "[url=" . System::baseUrl() . "/display/" . $match[1] . "]" . $match[2] . "[/url]";
1331 $text = preg_replace_callback(
1332 "&\[url=/people\?q\=(.*)\](.*)\[\/url\]&Usi",
1334 return "[url=" . System::baseUrl() . "/search?search=%40" . $match[1] . "]" . $match[2] . "[/url]";
1338 // Server independent link to posts and comments
1339 // See issue: https://github.com/diaspora/diaspora_federation/issues/75
1340 $expression = "=diaspora://.*?/post/([0-9A-Za-z\-_@.:]{15,254}[0-9A-Za-z])=ism";
1341 $text = preg_replace($expression, System::baseUrl()."/display/$1", $text);
1343 $text = preg_replace("/([#])\[url\=([$URLSearchString]*)\](.*?)\[\/url\]/ism",
1344 '$1<a href="' . System::baseUrl() . '/search?tag=$3" class="tag" title="$3">$3</a>', $text);
1346 $text = preg_replace("/\[url\=([$URLSearchString]*)\]#(.*?)\[\/url\]/ism",
1347 '#<a href="' . System::baseUrl() . '/search?tag=$2" class="tag" title="$2">$2</a>', $text);
1349 $text = preg_replace("/\[url\]([$URLSearchString]*)\[\/url\]/ism", '<a href="$1" target="_blank">$1</a>', $text);
1350 $text = preg_replace("/\[url\=([$URLSearchString]*)\](.*?)\[\/url\]/ism", '<a href="$1" target="_blank">$2</a>', $text);
1351 //$Text = preg_replace("/\[url\=([$URLSearchString]*)\]([$URLSearchString]*)\[\/url\]/ism", '<a href="$1" target="_blank">$2</a>', $Text);
1353 // Red compatibility, though the link can't be authenticated on Friendica
1354 $text = preg_replace("/\[zrl\=([$URLSearchString]*)\](.*?)\[\/zrl\]/ism", '<a href="$1" target="_blank">$2</a>', $text);
1357 // we may need to restrict this further if it picks up too many strays
1358 // link acct:user@host to a webfinger profile redirector
1360 $text = preg_replace('/acct:([^@]+)@((?!\-)(?:[a-zA-Z\d\-]{0,62}[a-zA-Z\d]\.){1,126}(?!\d+)[a-zA-Z\d]{1,63})/', '<a href="' . System::baseUrl() . '/acctlink?addr=$1@$2" target="extlink">acct:$1@$2</a>', $text);
1362 // Perform MAIL Search
1363 $text = preg_replace("/\[mail\]([$MAILSearchString]*)\[\/mail\]/", '<a href="mailto:$1">$1</a>', $text);
1364 $text = preg_replace("/\[mail\=([$MAILSearchString]*)\](.*?)\[\/mail\]/", '<a href="mailto:$1">$2</a>', $text);
1366 // leave open the posibility of [map=something]
1367 // this is replaced in Item::prepareBody() which has knowledge of the item location
1369 if (strpos($text, '[/map]') !== false) {
1370 $text = preg_replace_callback(
1371 "/\[map\](.*?)\[\/map\]/ism",
1372 function ($match) use ($simple_html) {
1373 return str_replace($match[0], '<p class="map">' . Map::byLocation($match[1], $simple_html) . '</p>', $match[0]);
1378 if (strpos($text, '[map=') !== false) {
1379 $text = preg_replace_callback(
1380 "/\[map=(.*?)\]/ism",
1381 function ($match) use ($simple_html) {
1382 return str_replace($match[0], '<p class="map">' . Map::byCoordinates(str_replace('/', ' ', $match[1]), $simple_html) . '</p>', $match[0]);
1387 if (strpos($text, '[map]') !== false) {
1388 $text = preg_replace("/\[map\]/", '<p class="map"></p>', $text);
1391 // Check for headers
1392 $text = preg_replace("(\[h1\](.*?)\[\/h1\])ism", '<h1>$1</h1>', $text);
1393 $text = preg_replace("(\[h2\](.*?)\[\/h2\])ism", '<h2>$1</h2>', $text);
1394 $text = preg_replace("(\[h3\](.*?)\[\/h3\])ism", '<h3>$1</h3>', $text);
1395 $text = preg_replace("(\[h4\](.*?)\[\/h4\])ism", '<h4>$1</h4>', $text);
1396 $text = preg_replace("(\[h5\](.*?)\[\/h5\])ism", '<h5>$1</h5>', $text);
1397 $text = preg_replace("(\[h6\](.*?)\[\/h6\])ism", '<h6>$1</h6>', $text);
1399 // Check for paragraph
1400 $text = preg_replace("(\[p\](.*?)\[\/p\])ism", '<p>$1</p>', $text);
1402 // Check for bold text
1403 $text = preg_replace("(\[b\](.*?)\[\/b\])ism", '<strong>$1</strong>', $text);
1405 // Check for Italics text
1406 $text = preg_replace("(\[i\](.*?)\[\/i\])ism", '<em>$1</em>', $text);
1408 // Check for Underline text
1409 $text = preg_replace("(\[u\](.*?)\[\/u\])ism", '<u>$1</u>', $text);
1411 // Check for strike-through text
1412 $text = preg_replace("(\[s\](.*?)\[\/s\])ism", '<s>$1</s>', $text);
1414 // Check for over-line text
1415 $text = preg_replace("(\[o\](.*?)\[\/o\])ism", '<span class="overline">$1</span>', $text);
1417 // Check for colored text
1418 $text = preg_replace("(\[color=(.*?)\](.*?)\[\/color\])ism", "<span style=\"color: $1;\">$2</span>", $text);
1420 // Check for sized text
1421 // [size=50] --> font-size: 50px (with the unit).
1422 $text = preg_replace("(\[size=(\d*?)\](.*?)\[\/size\])ism", "<span style=\"font-size: $1px; line-height: initial;\">$2</span>", $text);
1423 $text = preg_replace("(\[size=(.*?)\](.*?)\[\/size\])ism", "<span style=\"font-size: $1; line-height: initial;\">$2</span>", $text);
1425 // Check for centered text
1426 $text = preg_replace("(\[center\](.*?)\[\/center\])ism", "<div style=\"text-align:center;\">$1</div>", $text);
1428 // Check for list text
1429 $text = str_replace("[*]", "<li>", $text);
1431 // Check for style sheet commands
1432 $text = preg_replace_callback(
1433 "(\[style=(.*?)\](.*?)\[\/style\])ism",
1435 return "<span style=\"" . HTML::sanitizeCSS($match[1]) . ";\">" . $match[2] . "</span>";
1440 // Check for CSS classes
1441 $text = preg_replace_callback(
1442 "(\[class=(.*?)\](.*?)\[\/class\])ism",
1444 return "<span class=\"" . HTML::sanitizeCSS($match[1]) . "\">" . $match[2] . "</span>";
1449 // handle nested lists
1452 while ((((strpos($text, "[/list]") !== false) && (strpos($text, "[list") !== false)) ||
1453 ((strpos($text, "[/ol]") !== false) && (strpos($text, "[ol]") !== false)) ||
1454 ((strpos($text, "[/ul]") !== false) && (strpos($text, "[ul]") !== false)) ||
1455 ((strpos($text, "[/li]") !== false) && (strpos($text, "[li]") !== false))) && (++$endlessloop < 20)) {
1456 $text = preg_replace("/\[list\](.*?)\[\/list\]/ism", '<ul class="listbullet" style="list-style-type: circle;">$1</ul>', $text);
1457 $text = preg_replace("/\[list=\](.*?)\[\/list\]/ism", '<ul class="listnone" style="list-style-type: none;">$1</ul>', $text);
1458 $text = preg_replace("/\[list=1\](.*?)\[\/list\]/ism", '<ul class="listdecimal" style="list-style-type: decimal;">$1</ul>', $text);
1459 $text = preg_replace("/\[list=((?-i)i)\](.*?)\[\/list\]/ism", '<ul class="listlowerroman" style="list-style-type: lower-roman;">$2</ul>', $text);
1460 $text = preg_replace("/\[list=((?-i)I)\](.*?)\[\/list\]/ism", '<ul class="listupperroman" style="list-style-type: upper-roman;">$2</ul>', $text);
1461 $text = preg_replace("/\[list=((?-i)a)\](.*?)\[\/list\]/ism", '<ul class="listloweralpha" style="list-style-type: lower-alpha;">$2</ul>', $text);
1462 $text = preg_replace("/\[list=((?-i)A)\](.*?)\[\/list\]/ism", '<ul class="listupperalpha" style="list-style-type: upper-alpha;">$2</ul>', $text);
1463 $text = preg_replace("/\[ul\](.*?)\[\/ul\]/ism", '<ul class="listbullet" style="list-style-type: circle;">$1</ul>', $text);
1464 $text = preg_replace("/\[ol\](.*?)\[\/ol\]/ism", '<ul class="listdecimal" style="list-style-type: decimal;">$1</ul>', $text);
1465 $text = preg_replace("/\[li\](.*?)\[\/li\]/ism", '<li>$1</li>', $text);
1468 $text = preg_replace("/\[th\](.*?)\[\/th\]/sm", '<th>$1</th>', $text);
1469 $text = preg_replace("/\[td\](.*?)\[\/td\]/sm", '<td>$1</td>', $text);
1470 $text = preg_replace("/\[tr\](.*?)\[\/tr\]/sm", '<tr>$1</tr>', $text);
1471 $text = preg_replace("/\[table\](.*?)\[\/table\]/sm", '<table>$1</table>', $text);
1473 $text = preg_replace("/\[table border=1\](.*?)\[\/table\]/sm", '<table border="1" >$1</table>', $text);
1474 $text = preg_replace("/\[table border=0\](.*?)\[\/table\]/sm", '<table border="0" >$1</table>', $text);
1476 $text = str_replace('[hr]', '<hr />', $text);
1478 // This is actually executed in Item::prepareBody()
1480 $text = str_replace('[nosmile]', '', $text);
1482 // Check for font change text
1483 $text = preg_replace("/\[font=(.*?)\](.*?)\[\/font\]/sm", "<span style=\"font-family: $1;\">$2</span>", $text);
1485 // Declare the format for [code] layout
1487 $CodeLayout = '<code>$1</code>';
1488 // Check for [code] text
1489 $text = preg_replace("/\[code\](.*?)\[\/code\]/ism", "$CodeLayout", $text);
1491 // Declare the format for [spoiler] layout
1492 $SpoilerLayout = '<blockquote class="spoiler">$1</blockquote>';
1494 // Check for [spoiler] text
1495 // handle nested quotes
1497 while ((strpos($text, "[/spoiler]") !== false) && (strpos($text, "[spoiler]") !== false) && (++$endlessloop < 20)) {
1498 $text = preg_replace("/\[spoiler\](.*?)\[\/spoiler\]/ism", "$SpoilerLayout", $text);
1501 // Check for [spoiler=Author] text
1503 $t_wrote = L10n::t('$1 wrote:');
1505 // handle nested quotes
1507 while ((strpos($text, "[/spoiler]")!== false) && (strpos($text, "[spoiler=") !== false) && (++$endlessloop < 20)) {
1508 $text = preg_replace("/\[spoiler=[\"\']*(.*?)[\"\']*\](.*?)\[\/spoiler\]/ism",
1509 "<br /><strong class=".'"spoiler"'.">" . $t_wrote . "</strong><blockquote class=".'"spoiler"'.">$2</blockquote>",
1513 // Declare the format for [quote] layout
1514 $QuoteLayout = '<blockquote>$1</blockquote>';
1516 // Check for [quote] text
1517 // handle nested quotes
1519 while ((strpos($text, "[/quote]") !== false) && (strpos($text, "[quote]") !== false) && (++$endlessloop < 20)) {
1520 $text = preg_replace("/\[quote\](.*?)\[\/quote\]/ism", "$QuoteLayout", $text);
1523 // Check for [quote=Author] text
1525 $t_wrote = L10n::t('$1 wrote:');
1527 // handle nested quotes
1529 while ((strpos($text, "[/quote]")!== false) && (strpos($text, "[quote=") !== false) && (++$endlessloop < 20)) {
1530 $text = preg_replace("/\[quote=[\"\']*(.*?)[\"\']*\](.*?)\[\/quote\]/ism",
1531 "<p><strong class=".'"author"'.">" . $t_wrote . "</strong></p><blockquote>$2</blockquote>",
1536 // [img=widthxheight]image source[/img]
1537 $text = preg_replace_callback(
1538 "/\[img\=([0-9]*)x([0-9]*)\](.*?)\[\/img\]/ism",
1539 function ($matches) use ($simple_html) {
1540 if (strpos($matches[3], "data:image/") === 0) {
1544 $matches[3] = self::proxyUrl($matches[3], $simple_html);
1545 return "[img=" . $matches[1] . "x" . $matches[2] . "]" . $matches[3] . "[/img]";
1550 $text = preg_replace("/\[img\=([0-9]*)x([0-9]*)\](.*?)\[\/img\]/ism", '<img src="$3" style="width: $1px;" >', $text);
1551 $text = preg_replace("/\[zmg\=([0-9]*)x([0-9]*)\](.*?)\[\/zmg\]/ism", '<img class="zrl" src="$3" style="width: $1px;" >', $text);
1553 $text = preg_replace_callback("/\[img\=([$URLSearchString]*)\](.*?)\[\/img\]/ism",
1554 function ($matches) use ($simple_html) {
1555 $matches[1] = self::proxyUrl($matches[1], $simple_html);
1556 $matches[2] = htmlspecialchars($matches[2], ENT_COMPAT);
1557 return '<img src="' . $matches[1] . '" alt="' . $matches[2] . '">';
1562 // [img]pathtoimage[/img]
1563 $text = preg_replace_callback(
1564 "/\[img\](.*?)\[\/img\]/ism",
1565 function ($matches) use ($simple_html) {
1566 if (strpos($matches[1], "data:image/") === 0) {
1570 $matches[1] = self::proxyUrl($matches[1], $simple_html);
1571 return "[img]" . $matches[1] . "[/img]";
1576 $text = preg_replace("/\[img\](.*?)\[\/img\]/ism", '<img src="$1" alt="' . L10n::t('Image/photo') . '" />', $text);
1577 $text = preg_replace("/\[zmg\](.*?)\[\/zmg\]/ism", '<img src="$1" alt="' . L10n::t('Image/photo') . '" />', $text);
1580 $text = self::convertShare(
1582 function (array $attributes, array $author_contact, $content, $is_quote_share) use ($simple_html) {
1583 return self::convertShareCallback($attributes, $author_contact, $content, $is_quote_share, $simple_html);
1587 $text = preg_replace("/\[crypt\](.*?)\[\/crypt\]/ism", '<br/><img src="' .System::baseUrl() . '/images/lock_icon.gif" alt="' . L10n::t('Encrypted content') . '" title="' . L10n::t('Encrypted content') . '" /><br />', $text);
1588 $text = preg_replace("/\[crypt(.*?)\](.*?)\[\/crypt\]/ism", '<br/><img src="' .System::baseUrl() . '/images/lock_icon.gif" alt="' . L10n::t('Encrypted content') . '" title="' . '$1' . ' ' . L10n::t('Encrypted content') . '" /><br />', $text);
1589 //$Text = preg_replace("/\[crypt=(.*?)\](.*?)\[\/crypt\]/ism", '<br/><img src="' .System::baseUrl() . '/images/lock_icon.gif" alt="' . L10n::t('Encrypted content') . '" title="' . '$1' . ' ' . L10n::t('Encrypted content') . '" /><br />', $Text);
1593 $text = preg_replace("/\[video\](.*?\.(ogg|ogv|oga|ogm|webm|mp4).*?)\[\/video\]/ism", '<video src="$1" controls="controls" width="' . $a->videowidth . '" height="' . $a->videoheight . '" loop="true"><a href="$1">$1</a></video>', $text);
1594 $text = preg_replace("/\[audio\](.*?\.(ogg|ogv|oga|ogm|webm|mp4|mp3).*?)\[\/audio\]/ism", '<audio src="$1" controls="controls"><a href="$1">$1</a></audio>', $text);
1596 $text = preg_replace_callback("/\[video\](.*?)\[\/video\]/ism", $try_oembed_callback, $text);
1597 $text = preg_replace_callback("/\[audio\](.*?)\[\/audio\]/ism", $try_oembed_callback, $text);
1599 $text = preg_replace("/\[video\](.*?)\[\/video\]/ism",
1600 '<a href="$1" target="_blank">$1</a>', $text);
1601 $text = preg_replace("/\[audio\](.*?)\[\/audio\]/ism",
1602 '<a href="$1" target="_blank">$1</a>', $text);
1605 // html5 video and audio
1609 $text = preg_replace("/\[iframe\](.*?)\[\/iframe\]/ism", '<iframe src="$1" width="' . $a->videowidth . '" height="' . $a->videoheight . '"><a href="$1">$1</a></iframe>', $text);
1611 $text = preg_replace("/\[iframe\](.*?)\[\/iframe\]/ism", '<a href="$1">$1</a>', $text);
1614 // Youtube extensions
1616 $text = preg_replace_callback("/\[youtube\](https?:\/\/www.youtube.com\/watch\?v\=.*?)\[\/youtube\]/ism", $try_oembed_callback, $text);
1617 $text = preg_replace_callback("/\[youtube\](www.youtube.com\/watch\?v\=.*?)\[\/youtube\]/ism", $try_oembed_callback, $text);
1618 $text = preg_replace_callback("/\[youtube\](https?:\/\/youtu.be\/.*?)\[\/youtube\]/ism", $try_oembed_callback, $text);
1621 $text = preg_replace("/\[youtube\]https?:\/\/www.youtube.com\/watch\?v\=(.*?)\[\/youtube\]/ism", '[youtube]$1[/youtube]', $text);
1622 $text = preg_replace("/\[youtube\]https?:\/\/www.youtube.com\/embed\/(.*?)\[\/youtube\]/ism", '[youtube]$1[/youtube]', $text);
1623 $text = preg_replace("/\[youtube\]https?:\/\/youtu.be\/(.*?)\[\/youtube\]/ism", '[youtube]$1[/youtube]', $text);
1626 $text = preg_replace("/\[youtube\]([A-Za-z0-9\-_=]+)(.*?)\[\/youtube\]/ism", '<iframe width="' . $a->videowidth . '" height="' . $a->videoheight . '" src="https://www.youtube.com/embed/$1" frameborder="0" ></iframe>', $text);
1628 $text = preg_replace("/\[youtube\]([A-Za-z0-9\-_=]+)(.*?)\[\/youtube\]/ism",
1629 '<a href="https://www.youtube.com/watch?v=$1" target="_blank">https://www.youtube.com/watch?v=$1</a>', $text);
1633 $text = preg_replace_callback("/\[vimeo\](https?:\/\/player.vimeo.com\/video\/[0-9]+).*?\[\/vimeo\]/ism", $try_oembed_callback, $text);
1634 $text = preg_replace_callback("/\[vimeo\](https?:\/\/vimeo.com\/[0-9]+).*?\[\/vimeo\]/ism", $try_oembed_callback, $text);
1637 $text = preg_replace("/\[vimeo\]https?:\/\/player.vimeo.com\/video\/([0-9]+)(.*?)\[\/vimeo\]/ism", '[vimeo]$1[/vimeo]', $text);
1638 $text = preg_replace("/\[vimeo\]https?:\/\/vimeo.com\/([0-9]+)(.*?)\[\/vimeo\]/ism", '[vimeo]$1[/vimeo]', $text);
1641 $text = preg_replace("/\[vimeo\]([0-9]+)(.*?)\[\/vimeo\]/ism", '<iframe width="' . $a->videowidth . '" height="' . $a->videoheight . '" src="https://player.vimeo.com/video/$1" frameborder="0" ></iframe>', $text);
1643 $text = preg_replace("/\[vimeo\]([0-9]+)(.*?)\[\/vimeo\]/ism",
1644 '<a href="https://vimeo.com/$1" target="_blank">https://vimeo.com/$1</a>', $text);
1648 $text = OEmbed::BBCode2HTML($text);
1650 // Avoid triple linefeeds through oembed
1651 $text = str_replace("<br style='clear:left'></span><br /><br />", "<br style='clear:left'></span><br />", $text);
1653 // If we found an event earlier, strip out all the event code and replace with a reformatted version.
1654 // Replace the event-start section with the entire formatted event. The other bbcode is stripped.
1655 // Summary (e.g. title) is required, earlier revisions only required description (in addition to
1656 // start which is always required). Allow desc with a missing summary for compatibility.
1658 if ((x($ev, 'desc') || x($ev, 'summary')) && x($ev, 'start')) {
1659 $sub = Event::getHTML($ev, $simple_html);
1661 $text = preg_replace("/\[event\-summary\](.*?)\[\/event\-summary\]/ism", '', $text);
1662 $text = preg_replace("/\[event\-description\](.*?)\[\/event\-description\]/ism", '', $text);
1663 $text = preg_replace("/\[event\-start\](.*?)\[\/event\-start\]/ism", $sub, $text);
1664 $text = preg_replace("/\[event\-finish\](.*?)\[\/event\-finish\]/ism", '', $text);
1665 $text = preg_replace("/\[event\-location\](.*?)\[\/event\-location\]/ism", '', $text);
1666 $text = preg_replace("/\[event\-adjust\](.*?)\[\/event\-adjust\]/ism", '', $text);
1667 $text = preg_replace("/\[event\-id\](.*?)\[\/event\-id\]/ism", '', $text);
1670 // Replace non graphical smilies for external posts
1672 $text = Smilies::replace($text, false, true);
1675 // Unhide all [noparse] contained bbtags unspacefying them
1676 // and triming the [noparse] tag.
1678 $text = preg_replace_callback("/\[noparse\](.*?)\[\/noparse\]/ism", 'self::unescapeNoparseCallback', $text);
1679 $text = preg_replace_callback("/\[nobb\](.*?)\[\/nobb\]/ism", 'self::unescapeNoparseCallback', $text);
1680 $text = preg_replace_callback("/\[pre\](.*?)\[\/pre\]/ism", 'self::unescapeNoparseCallback', $text);
1682 /// @todo What is the meaning of these lines?
1683 $text = preg_replace('/\[\&\;([#a-z0-9]+)\;\]/', '&$1;', $text);
1684 $text = preg_replace('/\&\#039\;/', '\'', $text);
1686 // Currently deactivated, it made problems with " inside of alt texts.
1687 //$text = preg_replace('/\"\;/', '"', $text);
1689 // fix any escaped ampersands that may have been converted into links
1690 $text = preg_replace('/\<([^>]*?)(src|href)=(.*?)\&\;(.*?)\>/ism', '<$1$2=$3&$4>', $text);
1692 // sanitizes src attributes (http and redir URLs for displaying in a web page, cid used for inline images in emails)
1693 $allowed_src_protocols = ['http', 'redir', 'cid'];
1694 $text = preg_replace('#<([^>]*?)(src)="(?!' . implode('|', $allowed_src_protocols) . ')(.*?)"(.*?)>#ism',
1695 '<$1$2=""$4 data-original-src="$3" class="invalid-src" title="' . L10n::t('Invalid source protocol') . '">', $text);
1697 // sanitize href attributes (only whitelisted protocols URLs)
1698 // default value for backward compatibility
1699 $allowed_link_protocols = Config::get('system', 'allowed_link_protocols', ['ftp', 'mailto', 'gopher', 'cid']);
1701 // Always allowed protocol even if config isn't set or not including it
1702 $allowed_link_protocols[] = 'http';
1703 $allowed_link_protocols[] = 'redir/';
1705 $regex = '#<([^>]*?)(href)="(?!' . implode('|', $allowed_link_protocols) . ')(.*?)"(.*?)>#ism';
1706 $text = preg_replace($regex, '<$1$2="javascript:void(0)"$4 data-original-href="$3" class="invalid-href" title="' . L10n::t('Invalid link protocol') . '">', $text);
1709 $text = self::interpolateSavedImagesIntoItemBody($text, $saved_image);
1712 // Restore code blocks
1713 $text = preg_replace_callback('/#codeblock-([0-9]+)#/iU',
1714 function ($matches) use ($codeblocks) {
1715 $return = $matches[0];
1716 if (isset($codeblocks[intval($matches[1])])) {
1717 $return = $codeblocks[$matches[1]];
1724 // Clean up the HTML by loading and saving the HTML with the DOM.
1725 // Bad structured html can break a whole page.
1726 // For performance reasons do it only with ativated item cache or at export.
1727 if (!$try_oembed || (get_itemcachepath() != "")) {
1728 $doc = new DOMDocument();
1729 $doc->preserveWhiteSpace = false;
1731 $text = mb_convert_encoding($text, 'HTML-ENTITIES', "UTF-8");
1733 $doctype = '<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" "http://www.w3.org/TR/REC-html40/loose.dtd">';
1734 $encoding = '<?xml encoding="UTF-8">';
1735 @$doc->loadHTML($encoding.$doctype."<html><body>".$text."</body></html>");
1736 $doc->encoding = 'UTF-8';
1737 $text = $doc->saveHTML();
1738 $text = str_replace(["<html><body>", "</body></html>", $doctype, $encoding], ["", "", "", ""], $text);
1740 $text = str_replace('<br></li>', '</li>', $text);
1742 //$Text = mb_convert_encoding($Text, "UTF-8", 'HTML-ENTITIES');
1745 // Clean up some useless linebreaks in lists
1746 //$Text = str_replace('<br /><ul', '<ul ', $Text);
1747 //$Text = str_replace('</ul><br />', '</ul>', $Text);
1748 //$Text = str_replace('</li><br />', '</li>', $Text);
1749 //$Text = str_replace('<br /><li>', '<li>', $Text);
1750 //$Text = str_replace('<br /><ul', '<ul ', $Text);
1752 Addon::callHooks('bbcode', $text);
1758 * @brief Strips the "abstract" tag from the provided text
1760 * @param string $text The text with BBCode
1761 * @return string The same text - but without "abstract" element
1763 public static function stripAbstract($text)
1765 $text = preg_replace("/[\s|\n]*\[abstract\].*?\[\/abstract\][\s|\n]*/ism", '', $text);
1766 $text = preg_replace("/[\s|\n]*\[abstract=.*?\].*?\[\/abstract][\s|\n]*/ism", '', $text);
1772 * @brief Returns the value of the "abstract" element
1774 * @param string $text The text that maybe contains the element
1775 * @param string $addon The addon for which the abstract is meant for
1776 * @return string The abstract
1778 public static function getAbstract($text, $addon = "")
1782 $addon = strtolower($addon);
1784 if (preg_match_all("/\[abstract=(.*?)\](.*?)\[\/abstract\]/ism", $text, $results, PREG_SET_ORDER)) {
1785 foreach ($results AS $result) {
1786 $abstracts[strtolower($result[1])] = $result[2];
1790 if (isset($abstracts[$addon])) {
1791 $abstract = $abstracts[$addon];
1794 if ($abstract == "" && preg_match("/\[abstract\](.*?)\[\/abstract\]/ism", $text, $result)) {
1795 $abstract = $result[1];
1802 * @brief Callback function to replace a Friendica style mention in a mention for Diaspora
1804 * @param array $match Matching values for the callback
1805 * @return string Replaced mention
1807 private static function bbCodeMention2DiasporaCallback($match)
1809 $contact = Contact::getDetailsByURL($match[3]);
1811 if (empty($contact['addr'])) {
1812 $contact = Probe::uri($match[3]);
1815 if (empty($contact['addr'])) {
1819 $mention = '@{' . $match[2] . '; ' . $contact['addr'] . '}';
1824 * @brief Converts a BBCode text into Markdown
1826 * This function converts a BBCode item body to be sent to Markdown-enabled
1827 * systems like Diaspora and Libertree
1829 * @param string $text
1830 * @param bool $for_diaspora Diaspora requires more changes than Libertree
1833 public static function toMarkdown($text, $for_diaspora = true)
1835 $a = self::getApp();
1837 $original_text = $text;
1839 // Since Diaspora is creating a summary for links, this function removes them before posting
1840 if ($for_diaspora) {
1841 $text = self::removeShareInformation($text);
1845 * Transform #tags, strip off the [url] and replace spaces with underscore
1847 $url_search_string = "^\[\]";
1848 $text = preg_replace_callback("/#\[url\=([$url_search_string]*)\](.*?)\[\/url\]/i",
1849 function ($matches) {
1850 return '#' . str_replace(' ', '_', $matches[2]);
1855 // Converting images with size parameters to simple images. Markdown doesn't know it.
1856 $text = preg_replace("/\[img\=([0-9]*)x([0-9]*)\](.*?)\[\/img\]/ism", '[img]$3[/img]', $text);
1858 // Convert it to HTML - don't try oembed
1859 if ($for_diaspora) {
1860 $text = self::convert($text, false, 3);
1862 // Add all tags that maybe were removed
1863 if (preg_match_all("/#\[url\=([$url_search_string]*)\](.*?)\[\/url\]/ism", $original_text, $tags)) {
1865 foreach ($tags[2] as $tag) {
1866 $tag = html_entity_decode($tag, ENT_QUOTES, 'UTF-8');
1867 if (!strpos(html_entity_decode($text, ENT_QUOTES, 'UTF-8'), '#' . $tag)) {
1868 $tagline .= '#' . $tag . ' ';
1871 $text = $text . " " . $tagline;
1874 $text = self::convert($text, false, 4);
1877 // mask some special HTML chars from conversation to markdown
1878 $text = str_replace(['<', '>', '&'], ['&_lt_;', '&_gt_;', '&_amp_;'], $text);
1880 // If a link is followed by a quote then there should be a newline before it
1881 // Maybe we should make this newline at every time before a quote.
1882 $text = str_replace(["</a><blockquote>"], ["</a><br><blockquote>"], $text);
1884 $stamp1 = microtime(true);
1886 // Now convert HTML to Markdown
1887 $text = HTML::toMarkdown($text);
1889 // unmask the special chars back to HTML
1890 $text = str_replace(['&\_lt\_;', '&\_gt\_;', '&\_amp\_;'], ['<', '>', '&'], $text);
1892 $a->saveTimestamp($stamp1, "parser");
1894 // Libertree has a problem with escaped hashtags.
1895 $text = str_replace(['\#'], ['#'], $text);
1897 // Remove any leading or trailing whitespace, as this will mess up
1898 // the Diaspora signature verification and cause the item to disappear
1899 $text = trim($text);
1901 if ($for_diaspora) {
1902 $url_search_string = "^\[\]";
1903 $text = preg_replace_callback(
1904 "/([@]\[(.*?)\])\(([$url_search_string]*?)\)/ism",
1905 ['self', 'bbCodeMention2DiasporaCallback'],
1910 Addon::callHooks('bb2diaspora', $text);
1916 * @brief Pull out all #hashtags and @person tags from $string.
1918 * We also get @person@domain.com - which would make
1919 * the regex quite complicated as tags can also
1920 * end a sentence. So we'll run through our results
1921 * and strip the period from any tags which end with one.
1922 * Returns array of tags found, or empty array.
1924 * @param string $string Post content
1926 * @return array List of tag and person names
1928 public static function getTags($string)
1932 // Convert hashtag links to hashtags
1933 $string = preg_replace('/#\[url\=([^\[\]]*)\](.*?)\[\/url\]/ism', '#$2', $string);
1935 // ignore anything in a code block
1936 $string = preg_replace('/\[code\](.*?)\[\/code\]/sm', '', $string);
1938 // Force line feeds at bbtags
1939 $string = str_replace(['[', ']'], ["\n[", "]\n"], $string);
1941 // ignore anything in a bbtag
1942 $string = preg_replace('/\[(.*?)\]/sm', '', $string);
1944 // Match full names against @tags including the space between first and last
1945 // We will look these up afterward to see if they are full names or not recognisable.
1947 if (preg_match_all('/(@[^ \x0D\x0A,:?]+ [^ \x0D\x0A@,:?]+)([ \x0D\x0A@,:?]|$)/', $string, $matches)) {
1948 foreach ($matches[1] as $match) {
1949 if (strstr($match, ']')) {
1950 // we might be inside a bbcode color tag - leave it alone
1954 if (substr($match, -1, 1) === '.') {
1955 $ret[] = substr($match, 0, -1);
1962 // Otherwise pull out single word tags. These can be @nickname, @first_last
1965 if (preg_match_all('/([!#@][^\^ \x0D\x0A,;:?]+)([ \x0D\x0A,;:?]|$)/', $string, $matches)) {
1966 foreach ($matches[1] as $match) {
1967 if (strstr($match, ']')) {
1968 // we might be inside a bbcode color tag - leave it alone
1971 if (substr($match, -1, 1) === '.') {
1972 $match = substr($match,0,-1);
1974 // ignore strictly numeric tags like #1
1975 if ((strpos($match, '#') === 0) && ctype_digit(substr($match, 1))) {
1978 // try not to catch url fragments
1979 if (strpos($string, $match) && preg_match('/[a-zA-z0-9\/]/', substr($string, strpos($string, $match) - 1, 1))) {