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\Cache;
15 use Friendica\Core\Config;
16 use Friendica\Core\Hook;
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;
31 use Friendica\Util\XML;
33 class BBCode extends BaseObject
36 * @brief Fetches attachment data that were generated the old way
38 * @param string $body Message body
40 * 'type' -> Message type ("link", "video", "photo")
41 * 'text' -> Text before the shared message
42 * 'after' -> Text after the shared message
43 * 'image' -> Preview image of the message
44 * 'url' -> Url to the attached message
45 * 'title' -> Title of the attachment
46 * 'description' -> Description of the attachment
47 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
49 private static function getOldAttachmentData($body)
53 // Simplify image codes
54 $body = preg_replace("/\[img\=([0-9]*)x([0-9]*)\](.*?)\[\/img\]/ism", '[img]$3[/img]', $body);
56 if (preg_match_all("(\[class=(.*?)\](.*?)\[\/class\])ism", $body, $attached, PREG_SET_ORDER)) {
57 foreach ($attached as $data) {
58 if (!in_array($data[1], ["type-link", "type-video", "type-photo"])) {
62 $post["type"] = substr($data[1], 5);
64 $pos = strpos($body, $data[0]);
66 $post["text"] = trim(substr($body, 0, $pos));
67 $post["after"] = trim(substr($body, $pos + strlen($data[0])));
69 $post["text"] = trim(str_replace($data[0], "", $body));
73 $attacheddata = $data[2];
75 $URLSearchString = "^\[\]";
77 if (preg_match("/\[img\]([$URLSearchString]*)\[\/img\]/ism", $attacheddata, $matches)) {
79 $picturedata = Image::getInfoFromURL($matches[1]);
82 if (($picturedata[0] >= 500) && ($picturedata[0] >= $picturedata[1])) {
83 $post["image"] = $matches[1];
85 $post["preview"] = $matches[1];
90 if (preg_match("/\[bookmark\=([$URLSearchString]*)\](.*?)\[\/bookmark\]/ism", $attacheddata, $matches)) {
91 $post["url"] = $matches[1];
92 $post["title"] = $matches[2];
94 if (!empty($post["url"]) && (in_array($post["type"], ["link", "video"]))
95 && preg_match("/\[url\=([$URLSearchString]*)\](.*?)\[\/url\]/ism", $attacheddata, $matches)) {
96 $post["url"] = $matches[1];
99 // Search for description
100 if (preg_match("/\[quote\](.*?)\[\/quote\]/ism", $attacheddata, $matches)) {
101 $post["description"] = $matches[1];
109 * @brief Fetches attachment data that were generated with the "attachment" element
111 * @param string $body Message body
113 * 'type' -> Message type ("link", "video", "photo")
114 * 'text' -> Text before the shared message
115 * 'after' -> Text after the shared message
116 * 'image' -> Preview image of the message
117 * 'url' -> Url to the attached message
118 * 'title' -> Title of the attachment
119 * 'description' -> Description of the attachment
120 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
122 public static function getAttachmentData($body)
126 if (!preg_match("/(.*)\[attachment(.*?)\](.*?)\[\/attachment\](.*)/ism", $body, $match)) {
127 return self::getOldAttachmentData($body);
130 $attributes = $match[2];
132 $data["text"] = trim($match[1]);
135 preg_match("/type='(.*?)'/ism", $attributes, $matches);
136 if (!empty($matches[1])) {
137 $type = strtolower($matches[1]);
140 preg_match('/type="(.*?)"/ism', $attributes, $matches);
141 if (!empty($matches[1])) {
142 $type = strtolower($matches[1]);
149 if (!in_array($type, ["link", "audio", "photo", "video"])) {
154 $data["type"] = $type;
158 preg_match("/url='(.*?)'/ism", $attributes, $matches);
159 if (!empty($matches[1])) {
163 preg_match('/url="(.*?)"/ism', $attributes, $matches);
164 if (!empty($matches[1])) {
169 $data["url"] = html_entity_decode($url, ENT_QUOTES, 'UTF-8');
173 preg_match("/title='(.*?)'/ism", $attributes, $matches);
174 if (!empty($matches[1])) {
175 $title = $matches[1];
178 preg_match('/title="(.*?)"/ism', $attributes, $matches);
179 if (!empty($matches[1])) {
180 $title = $matches[1];
184 $title = self::convert(html_entity_decode($title, ENT_QUOTES, 'UTF-8'), false, true);
185 $title = html_entity_decode($title, ENT_QUOTES, 'UTF-8');
186 $title = str_replace(["[", "]"], ["[", "]"], $title);
187 $data["title"] = $title;
191 preg_match("/image='(.*?)'/ism", $attributes, $matches);
192 if (!empty($matches[1])) {
193 $image = $matches[1];
196 preg_match('/image="(.*?)"/ism', $attributes, $matches);
197 if (!empty($matches[1])) {
198 $image = $matches[1];
202 $data["image"] = html_entity_decode($image, ENT_QUOTES, 'UTF-8');
206 preg_match("/preview='(.*?)'/ism", $attributes, $matches);
207 if (!empty($matches[1])) {
208 $preview = $matches[1];
211 preg_match('/preview="(.*?)"/ism', $attributes, $matches);
212 if (!empty($matches[1])) {
213 $preview = $matches[1];
216 if ($preview != "") {
217 $data["preview"] = html_entity_decode($preview, ENT_QUOTES, 'UTF-8');
220 $data["description"] = trim($match[3]);
222 $data["after"] = trim($match[4]);
227 public static function getAttachedData($body, $item = [])
231 - type: link, video, photo
239 $has_title = !empty($item['title']);
240 $plink = defaults($item, 'plink', '');
241 $post = self::getAttachmentData($body);
243 // if nothing is found, it maybe having an image.
244 if (!isset($post["type"])) {
245 // Simplify image codes
246 $body = preg_replace("/\[img\=([0-9]*)x([0-9]*)\](.*?)\[\/img\]/ism", '[img]$3[/img]', $body);
248 $URLSearchString = "^\[\]";
250 $body = preg_replace("/\[img\=([$URLSearchString]*)\](.*?)\[\/img\]/ism", '[img]$1[/img]', $body);
252 if (preg_match_all("(\[url=([$URLSearchString]*)\]\s*\[img\]([$URLSearchString]*)\[\/img\]\s*\[\/url\])ism", $body, $pictures, PREG_SET_ORDER)) {
253 if ((count($pictures) == 1) && !$has_title) {
254 if (!empty($item['object-type']) && ($item['object-type'] == ACTIVITY_OBJ_IMAGE)) {
255 // Replace the preview picture with the real picture
256 $url = str_replace('-1.', '-0.', $pictures[0][2]);
257 $data = ['url' => $url, 'type' => 'photo'];
259 // Checking, if the link goes to a picture
260 $data = ParseUrl::getSiteinfoCached($pictures[0][1], true);
264 // Sometimes photo posts to the own album are not detected at the start.
265 // So we seem to cannot use the cache for these cases. That's strange.
266 if (($data["type"] != "photo") && strstr($pictures[0][1], "/photos/")) {
267 $data = ParseUrl::getSiteinfo($pictures[0][1], true);
270 if ($data["type"] == "photo") {
271 $post["type"] = "photo";
272 if (isset($data["images"][0])) {
273 $post["image"] = $data["images"][0]["src"];
274 $post["url"] = $data["url"];
276 $post["image"] = $data["url"];
279 $post["preview"] = $pictures[0][2];
280 $post["text"] = trim(str_replace($pictures[0][0], "", $body));
282 $imgdata = Image::getInfoFromURL($pictures[0][1]);
283 if ($imgdata && substr($imgdata["mime"], 0, 6) == "image/") {
284 $post["type"] = "photo";
285 $post["image"] = $pictures[0][1];
286 $post["preview"] = $pictures[0][2];
287 $post["text"] = trim(str_replace($pictures[0][0], "", $body));
290 } elseif (count($pictures) > 0) {
291 $post["type"] = "link";
292 $post["url"] = $plink;
293 $post["image"] = $pictures[0][2];
294 $post["text"] = $body;
296 } elseif (preg_match_all("(\[img\]([$URLSearchString]*)\[\/img\])ism", $body, $pictures, PREG_SET_ORDER)) {
297 if ((count($pictures) == 1) && !$has_title) {
298 $post["type"] = "photo";
299 $post["image"] = $pictures[0][1];
300 $post["text"] = str_replace($pictures[0][0], "", $body);
301 } elseif (count($pictures) > 0) {
302 $post["type"] = "link";
303 $post["url"] = $plink;
304 $post["image"] = $pictures[0][1];
305 $post["text"] = $body;
309 // Test for the external links
310 preg_match_all("(\[url\]([$URLSearchString]*)\[\/url\])ism", $body, $links1, PREG_SET_ORDER);
311 preg_match_all("(\[url\=([$URLSearchString]*)\].*?\[\/url\])ism", $body, $links2, PREG_SET_ORDER);
313 $links = array_merge($links1, $links2);
315 // If there is only a single one, then use it.
316 // This should cover link posts via API.
317 if ((count($links) == 1) && !isset($post["preview"]) && !$has_title) {
318 $post["type"] = "link";
319 $post["text"] = trim($body);
320 $post["url"] = $links[0][1];
323 // Now count the number of external media links
324 preg_match_all("(\[vimeo\](.*?)\[\/vimeo\])ism", $body, $links1, PREG_SET_ORDER);
325 preg_match_all("(\[youtube\\](.*?)\[\/youtube\\])ism", $body, $links2, PREG_SET_ORDER);
326 preg_match_all("(\[video\\](.*?)\[\/video\\])ism", $body, $links3, PREG_SET_ORDER);
327 preg_match_all("(\[audio\\](.*?)\[\/audio\\])ism", $body, $links4, PREG_SET_ORDER);
329 // Add them to the other external links
330 $links = array_merge($links, $links1, $links2, $links3, $links4);
332 // Are there more than one?
333 if (count($links) > 1) {
334 // The post will be the type "text", which means a blog post
335 unset($post["type"]);
336 $post["url"] = $plink;
339 if (!isset($post["type"])) {
340 $post["type"] = "text";
341 $post["text"] = trim($body);
343 } elseif (isset($post["url"]) && ($post["type"] == "video")) {
344 $data = ParseUrl::getSiteinfoCached($post["url"], true);
346 if (isset($data["images"][0])) {
347 $post["image"] = $data["images"][0]["src"];
355 * @brief Converts a BBCode text into plaintext
358 * @param bool $keep_urls Whether to keep URLs in the resulting plaintext
362 public static function toPlaintext($text, $keep_urls = true)
364 $naked_text = preg_replace('/\[(.+?)\]\s*/','', $text);
366 $naked_text = preg_replace('#https?\://[^\s<]+[^\s\.\)]#i', '', $naked_text);
372 private static function proxyUrl($image, $simplehtml = false)
374 // Only send proxied pictures to API and for internal display
375 if (in_array($simplehtml, [false, 2])) {
376 return ProxyUtils::proxifyUrl($image);
382 public static function scaleExternalImages($srctext, $include_link = true, $scale_replace = false)
384 // Suppress "view full size"
385 if (intval(Config::get('system', 'no_view_full_size'))) {
386 $include_link = false;
389 // Picture addresses can contain special characters
390 $s = htmlspecialchars_decode($srctext);
393 $c = preg_match_all('/\[img.*?\](.*?)\[\/img\]/ism', $s, $matches, PREG_SET_ORDER);
395 foreach ($matches as $mtch) {
396 Logger::log('scale_external_image: ' . $mtch[1]);
398 $hostname = str_replace('www.', '', substr(System::baseUrl(), strpos(System::baseUrl(), '://') + 3));
399 if (stristr($mtch[1], $hostname)) {
403 // $scale_replace, if passed, is an array of two elements. The
404 // first is the name of the full-size image. The second is the
405 // name of a remote, scaled-down version of the full size image.
406 // This allows Friendica to display the smaller remote image if
407 // one exists, while still linking to the full-size image
408 if ($scale_replace) {
409 $scaled = str_replace($scale_replace[0], $scale_replace[1], $mtch[1]);
413 $i = Network::fetchUrl($scaled);
418 // guess mimetype from headers or filename
419 $type = Image::guessType($mtch[1], true);
422 $Image = new Image($i, $type);
423 if ($Image->isValid()) {
424 $orig_width = $Image->getWidth();
425 $orig_height = $Image->getHeight();
427 if ($orig_width > 640 || $orig_height > 640) {
428 $Image->scaleDown(640);
429 $new_width = $Image->getWidth();
430 $new_height = $Image->getHeight();
431 Logger::log('scale_external_images: ' . $orig_width . '->' . $new_width . 'w ' . $orig_height . '->' . $new_height . 'h' . ' match: ' . $mtch[0], Logger::DEBUG);
434 '[img=' . $new_width . 'x' . $new_height. ']' . $scaled . '[/img]'
435 . "\n" . (($include_link)
436 ? '[url=' . $mtch[1] . ']' . L10n::t('view full size') . '[/url]' . "\n"
440 Logger::log('scale_external_images: new string: ' . $s, Logger::DEBUG);
447 // replace the special char encoding
448 $s = htmlspecialchars($s, ENT_NOQUOTES, 'UTF-8');
453 * The purpose of this function is to apply system message length limits to
454 * imported messages without including any embedded photos in the length
456 * @brief Truncates imported message body string length to max_import_size
457 * @param string $body
459 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
461 public static function limitBodySize($body)
463 $maxlen = Config::get('config', 'max_import_size', 0);
465 // If the length of the body, including the embedded images, is smaller
466 // than the maximum, then don't waste time looking for the images
467 if ($maxlen && (strlen($body) > $maxlen)) {
469 Logger::log('the total body length exceeds the limit', Logger::DEBUG);
475 $img_start = strpos($orig_body, '[img');
476 $img_st_close = ($img_start !== false ? strpos(substr($orig_body, $img_start), ']') : false);
477 $img_end = ($img_start !== false ? strpos(substr($orig_body, $img_start), '[/img]') : false);
478 while (($img_st_close !== false) && ($img_end !== false)) {
480 $img_st_close++; // make it point to AFTER the closing bracket
481 $img_end += $img_start;
482 $img_end += strlen('[/img]');
484 if (!strcmp(substr($orig_body, $img_start + $img_st_close, 5), 'data:')) {
485 // This is an embedded image
487 if (($textlen + $img_start) > $maxlen) {
488 if ($textlen < $maxlen) {
489 Logger::log('the limit happens before an embedded image', Logger::DEBUG);
490 $new_body = $new_body . substr($orig_body, 0, $maxlen - $textlen);
494 $new_body = $new_body . substr($orig_body, 0, $img_start);
495 $textlen += $img_start;
498 $new_body = $new_body . substr($orig_body, $img_start, $img_end - $img_start);
501 if (($textlen + $img_end) > $maxlen) {
502 if ($textlen < $maxlen) {
503 Logger::log('the limit happens before the end of a non-embedded image', Logger::DEBUG);
504 $new_body = $new_body . substr($orig_body, 0, $maxlen - $textlen);
508 $new_body = $new_body . substr($orig_body, 0, $img_end);
509 $textlen += $img_end;
512 $orig_body = substr($orig_body, $img_end);
514 if ($orig_body === false) {
515 // in case the body ends on a closing image tag
519 $img_start = strpos($orig_body, '[img');
520 $img_st_close = ($img_start !== false ? strpos(substr($orig_body, $img_start), ']') : false);
521 $img_end = ($img_start !== false ? strpos(substr($orig_body, $img_start), '[/img]') : false);
524 if (($textlen + strlen($orig_body)) > $maxlen) {
525 if ($textlen < $maxlen) {
526 Logger::log('the limit happens after the end of the last image', Logger::DEBUG);
527 $new_body = $new_body . substr($orig_body, 0, $maxlen - $textlen);
530 Logger::log('the text size with embedded images extracted did not violate the limit', Logger::DEBUG);
531 $new_body = $new_body . $orig_body;
541 * Processes [attachment] tags
543 * Note: Can produce a [bookmark] tag in the returned string
545 * @brief Processes [attachment] tags
546 * @param string $return
547 * @param bool|int $simplehtml
548 * @param bool $tryoembed
550 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
552 private static function convertAttachment($return, $simplehtml = false, $tryoembed = true)
554 $data = self::getAttachmentData($return);
555 if (empty($data) || empty($data["url"])) {
559 if (isset($data["title"])) {
560 $data["title"] = strip_tags($data["title"]);
561 $data["title"] = str_replace(["http://", "https://"], "", $data["title"]);
563 $data["title"] = null;
566 if (((strpos($data["text"], "[img=") !== false) || (strpos($data["text"], "[img]") !== false) || Config::get('system', 'always_show_preview')) && !empty($data["image"])) {
567 $data["preview"] = $data["image"];
572 if (in_array($simplehtml, [7, 9])) {
573 $return = self::convertUrlForOStatus($data["url"]);
574 } elseif (($simplehtml != 4) && ($simplehtml != 0)) {
575 $return = sprintf('<a href="%s" target="_blank">%s</a><br>', $data["url"], $data["title"]);
578 if ($tryoembed && OEmbed::isAllowedURL($data['url'])) {
579 $return = OEmbed::getHTML($data['url'], $data['title']);
581 throw new Exception('OEmbed is disabled for this attachment.');
583 } catch (Exception $e) {
584 $data["title"] = defaults($data, 'title', $data['url']);
586 if ($simplehtml != 4) {
587 $return = sprintf('<div class="type-%s">', $data["type"]);
590 if (!empty($data['title']) && !empty($data['url'])) {
591 if (!empty($data["image"]) && empty($data["text"]) && ($data["type"] == "photo")) {
592 $return .= sprintf('<a href="%s" target="_blank"><img src="%s" alt="" title="%s" class="attachment-image" /></a>', $data["url"], self::proxyUrl($data["image"], $simplehtml), $data["title"]);
594 if (!empty($data["image"])) {
595 $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), $data["title"]);
596 } elseif (!empty($data["preview"])) {
597 $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"]);
599 $return .= sprintf('<h4><a href="%s">%s</a></h4>', $data['url'], $data['title']);
603 if (!empty($data["description"]) && $data["description"] != $data["title"]) {
604 // Sanitize the HTML by converting it to BBCode
605 $bbcode = HTML::toBBCode($data["description"]);
606 $return .= sprintf('<blockquote>%s</blockquote>', trim(self::convert($bbcode)));
609 if (!empty($data['url'])) {
610 $return .= sprintf('<sup><a href="%s">%s</a></sup>', $data['url'], parse_url($data['url'], PHP_URL_HOST));
613 if ($simplehtml != 4) {
619 return trim(defaults($data, 'text', '') . ' ' . $return . ' ' . defaults($data, 'after', ''));
622 public static function removeShareInformation($Text, $plaintext = false, $nolink = false)
624 $data = self::getAttachmentData($Text);
629 return $data["text"] . defaults($data, 'after', '');
632 $title = htmlentities(defaults($data, 'title', ''), ENT_QUOTES, 'UTF-8', false);
633 $text = htmlentities($data["text"], ENT_QUOTES, 'UTF-8', false);
634 if ($plaintext || (($title != "") && strstr($text, $title))) {
635 $data["title"] = $data["url"];
636 } elseif (($text != "") && strstr($title, $text)) {
637 $data["text"] = $data["title"];
638 $data["title"] = $data["url"];
641 if (empty($data["text"]) && !empty($data["title"]) && empty($data["url"])) {
642 return $data["title"] . $data["after"];
645 // If the link already is included in the post, don't add it again
646 if (!empty($data["url"]) && strpos($data["text"], $data["url"])) {
647 return $data["text"] . $data["after"];
650 $text = $data["text"];
652 if (!empty($data["url"]) && !empty($data["title"])) {
653 $text .= "\n[url=" . $data["url"] . "]" . $data["title"] . "[/url]";
654 } elseif (!empty($data["url"])) {
655 $text .= "\n[url]" . $data["url"] . "[/url]";
658 return $text . "\n" . $data["after"];
662 * Converts [url] BBCodes in a format that looks fine on Mastodon. (callback function)
664 * @brief Converts [url] BBCodes in a format that looks fine on Mastodon. (callback function)
665 * @param array $match Array with the matching values
666 * @return string reformatted link including HTML codes
668 private static function convertUrlForOStatusCallback($match)
672 if (isset($match[2]) && ($match[1] != $match[2])) {
676 $parts = parse_url($url);
677 if (!isset($parts['scheme'])) {
681 return self::convertUrlForOStatus($url);
685 * @brief Converts [url] BBCodes in a format that looks fine on OStatus systems.
686 * @param string $url URL that is about to be reformatted
687 * @return string reformatted link including HTML codes
689 private static function convertUrlForOStatus($url)
691 $parts = parse_url($url);
692 $scheme = $parts['scheme'] . '://';
693 $styled_url = str_replace($scheme, '', $url);
695 if (strlen($styled_url) > 30) {
696 $styled_url = substr($styled_url, 0, 30) . "…";
699 $html = '<a href="%s" target="_blank">%s</a>';
701 return sprintf($html, $url, $styled_url);
705 * [noparse][i]italic[/i][/noparse] turns into
706 * [noparse][ i ]italic[ /i ][/noparse],
707 * to hide them from parser.
709 private static function escapeNoparseCallback($match)
711 $whole_match = $match[0];
712 $captured = $match[1];
713 $spacefied = preg_replace("/\[(.*?)\]/", "[ $1 ]", $captured);
714 $new_str = str_replace($captured, $spacefied, $whole_match);
719 * The previously spacefied [noparse][ i ]italic[ /i ][/noparse],
720 * now turns back and the [noparse] tags are trimed
721 * returning [i]italic[/i]
723 private static function unescapeNoparseCallback($match)
725 $captured = $match[1];
726 $unspacefied = preg_replace("/\[ (.*?)\ ]/", "[$1]", $captured);
731 * Returns the bracket character positions of a set of opening and closing BBCode tags, optionally skipping first
734 * @param string $text Text to search
735 * @param string $name Tag name
736 * @param int $occurrences Number of first occurrences to skip
737 * @return boolean|array
739 public static function getTagPosition($text, $name, $occurrences = 0)
741 if ($occurrences < 0) {
746 for ($i = 0; $i <= $occurrences; $i++) {
747 if ($start_open !== false) {
748 $start_open = strpos($text, '[' . $name, $start_open + 1); // allow [name= type tags
752 if ($start_open === false) {
756 $start_equal = strpos($text, '=', $start_open);
757 $start_close = strpos($text, ']', $start_open);
759 if ($start_close === false) {
765 $end_open = strpos($text, '[/' . $name . ']', $start_close);
767 if ($end_open === false) {
773 'open' => $start_open,
774 'close' => $start_close
778 'close' => $end_open + strlen('[/' . $name . ']')
782 if ($start_equal !== false) {
783 $res['start']['equal'] = $start_equal + 1;
790 * Performs a preg_replace within the boundaries of all named BBCode tags in a text
792 * @param string $pattern Preg pattern string
793 * @param string $replace Preg replace string
794 * @param string $name BBCode tag name
795 * @param string $text Text to search
798 public static function pregReplaceInTag($pattern, $replace, $name, $text)
801 $pos = self::getTagPosition($text, $name, $occurrences);
802 while ($pos !== false && $occurrences++ < 1000) {
803 $start = substr($text, 0, $pos['start']['open']);
804 $subject = substr($text, $pos['start']['open'], $pos['end']['close'] - $pos['start']['open']);
805 $end = substr($text, $pos['end']['close']);
806 if ($end === false) {
810 $subject = preg_replace($pattern, $replace, $subject);
811 $text = $start . $subject . $end;
813 $pos = self::getTagPosition($text, $name, $occurrences);
819 private static function extractImagesFromItemBody($body)
826 $img_start = strpos($orig_body, '[img');
827 $img_st_close = ($img_start !== false ? strpos(substr($orig_body, $img_start), ']') : false);
828 $img_end = ($img_start !== false ? strpos(substr($orig_body, $img_start), '[/img]') : false);
829 while (($img_st_close !== false) && ($img_end !== false)) {
830 $img_st_close++; // make it point to AFTER the closing bracket
831 $img_end += $img_start;
833 if (!strcmp(substr($orig_body, $img_start + $img_st_close, 5), 'data:')) {
834 // This is an embedded image
835 $saved_image[$cnt] = substr($orig_body, $img_start + $img_st_close, $img_end - ($img_start + $img_st_close));
836 $new_body = $new_body . substr($orig_body, 0, $img_start) . '[$#saved_image' . $cnt . '#$]';
840 $new_body = $new_body . substr($orig_body, 0, $img_end + strlen('[/img]'));
843 $orig_body = substr($orig_body, $img_end + strlen('[/img]'));
845 if ($orig_body === false) {
846 // in case the body ends on a closing image tag
850 $img_start = strpos($orig_body, '[img');
851 $img_st_close = ($img_start !== false ? strpos(substr($orig_body, $img_start), ']') : false);
852 $img_end = ($img_start !== false ? strpos(substr($orig_body, $img_start), '[/img]') : false);
855 $new_body = $new_body . $orig_body;
857 return ['body' => $new_body, 'images' => $saved_image];
860 private static function interpolateSavedImagesIntoItemBody($body, array $images)
865 foreach ($images as $image) {
866 // We're depending on the property of 'foreach' (specified on the PHP website) that
867 // it loops over the array starting from the first element and going sequentially
868 // to the last element
869 $newbody = str_replace('[$#saved_image' . $cnt . '#$]',
870 '<img src="' . self::proxyUrl($image) . '" alt="' . L10n::t('Image/photo') . '" />', $newbody);
878 * This function converts a [share] block to text according to a provided callback function whose signature is:
880 * function(array $attributes, array $author_contact, string $content, boolean $is_quote_share): string
883 * - $attributes is an array of attributes of the [share] block itself. Missing keys will be completed by the contact
885 * - $author_contact is a contact record array
886 * - $content is the inner content of the [share] block
887 * - $is_quote_share indicates whether there's any content before the [share] block
888 * - Return value is the string that should replace the [share] block in the provided text
890 * This function is intended to be used by addon connector to format a share block like the target network is expecting it.
892 * @param string $text A BBCode string
893 * @param callable $callback
894 * @return string The BBCode string with all [share] blocks replaced
896 public static function convertShare($text, callable $callback)
898 $return = preg_replace_callback(
899 "/(.*?)\[share(.*?)\](.*?)\[\/share\]/ism",
900 function ($match) use ($callback) {
901 $attribute_string = $match[2];
904 foreach(['author', 'profile', 'avatar', 'link', 'posted'] as $field) {
905 preg_match("/$field=(['\"])(.+?)\\1/ism", $attribute_string, $matches);
906 $attributes[$field] = html_entity_decode(defaults($matches, 2, ''), ENT_QUOTES, 'UTF-8');
909 // We only call this so that a previously unknown contact can be added.
910 // This is important for the function "Model\Contact::getDetailsByURL()".
911 // This function then can fetch an entry from the contact table.
912 Contact::getIdForURL($attributes['profile'], 0, true);
914 $author_contact = Contact::getDetailsByURL($attributes['profile']);
915 $author_contact['addr'] = defaults($author_contact, 'addr' , Protocol::getAddrFromProfileUrl($attributes['profile']));
917 $attributes['author'] = defaults($author_contact, 'name' , $attributes['author']);
918 $attributes['avatar'] = defaults($author_contact, 'micro', $attributes['avatar']);
919 $attributes['profile'] = defaults($author_contact, 'url' , $attributes['profile']);
921 if ($attributes['avatar']) {
922 $attributes['avatar'] = ProxyUtils::proxifyUrl($attributes['avatar'], false, ProxyUtils::SIZE_THUMB);
925 return $match[1] . $callback($attributes, $author_contact, $match[3], trim($match[1]) != '');
934 * Default [share] tag conversion callback
936 * Note: Can produce a [bookmark] tag in the output
938 * @see BBCode::convertShare()
939 * @param array $attributes [share] block attribute values
940 * @param array $author_contact Contact row of the shared author
941 * @param string $content Inner content of the [share] block
942 * @param boolean $is_quote_share Whether there is content before the [share] block
943 * @param integer $simplehtml Mysterious integer value depending on the target network/formatting style
945 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
947 private static function convertShareCallback(array $attributes, array $author_contact, $content, $is_quote_share, $simplehtml)
949 $mention = Protocol::formatMention($attributes['profile'], $attributes['author']);
951 switch ($simplehtml) {
953 $text = ($is_quote_share? '<br />' : '') . '<p>' . html_entity_decode('♲ ', ENT_QUOTES, 'UTF-8') . ' <a href="' . $attributes['profile'] . '">' . $mention . '</a>: </p>' . "\n" . '«' . $content . '»';
956 $text = ($is_quote_share? '<br />' : '') . '<p>' . html_entity_decode('♲ ', ENT_QUOTES, 'UTF-8') . ' ' . $author_contact['addr'] . ': </p>' . "\n" . $content;
959 if (stripos(Strings::normaliseLink($attributes['link']), 'http://twitter.com/') === 0) {
960 $text = ($is_quote_share? '<hr />' : '') . '<p><a href="' . $attributes['link'] . '">' . $attributes['link'] . '</a></p>' . "\n";
962 $headline = '<p><b>♲ <a href="' . $attributes['profile'] . '">' . $attributes['author'] . '</a>:</b></p>' . "\n";
964 if (!empty($attributes['posted']) && !empty($attributes['link'])) {
965 $headline = '<p><b>♲ <a href="' . $attributes['profile'] . '">' . $attributes['author'] . '</a></b> - <a href="' . $attributes['link'] . '">' . $attributes['posted'] . ' GMT</a></p>' . "\n";
968 $text = ($is_quote_share? '<hr />' : '') . $headline . '<blockquote>' . trim($content) . '</blockquote>' . "\n";
970 if (empty($attributes['posted']) && !empty($attributes['link'])) {
971 $text .= '<p><a href="' . $attributes['link'] . '">[Source]</a></p>' . "\n";
977 $headline = '<p><b>' . html_entity_decode('♲ ', ENT_QUOTES, 'UTF-8');
978 $headline .= L10n::t('<a href="%1$s" target="_blank">%2$s</a> %3$s', $attributes['link'], $mention, $attributes['posted']);
979 $headline .= ':</b></p>' . "\n";
981 $text = ($is_quote_share? '<hr />' : '') . $headline . '<blockquote class="shared_content">' . trim($content) . '</blockquote>' . "\n";
985 $text = ($is_quote_share? '<br />' : '') . '<p>' . html_entity_decode('♲ ', ENT_QUOTES, 'UTF-8') . ' ' . $author_contact['addr'] . ': </p>' . "\n" . $content;
987 case 7: // statusnet/GNU Social
988 case 9: // ActivityPub
989 $text = ($is_quote_share? '<br />' : '') . '<p>' . html_entity_decode('♲ ', ENT_QUOTES, 'UTF-8') . ' @' . $author_contact['addr'] . ': ' . $content . '</p>' . "\n";
992 // Transforms quoted tweets in rich attachments to avoid nested tweets
993 if (stripos(Strings::normaliseLink($attributes['link']), 'http://twitter.com/') === 0 && OEmbed::isAllowedURL($attributes['link'])) {
995 $text = ($is_quote_share? '<br />' : '') . OEmbed::getHTML($attributes['link']);
996 } catch (Exception $e) {
997 $text = ($is_quote_share? '<br />' : '') . sprintf('[bookmark=%s]%s[/bookmark]', $attributes['link'], $content);
1000 $text = ($is_quote_share? "\n" : '');
1002 $tpl = Renderer::getMarkupTemplate('shared_content.tpl');
1003 $text .= Renderer::replaceMacros($tpl, [
1004 '$profile' => $attributes['profile'],
1005 '$avatar' => $attributes['avatar'],
1006 '$author' => $attributes['author'],
1007 '$link' => $attributes['link'],
1008 '$posted' => $attributes['posted'],
1009 '$content' => trim($content)
1018 private static function removePictureLinksCallback($match)
1020 $text = Cache::get($match[1]);
1022 if (is_null($text)) {
1023 $a = self::getApp();
1025 $stamp1 = microtime(true);
1027 $ch = @curl_init($match[1]);
1028 @curl_setopt($ch, CURLOPT_NOBODY, true);
1029 @curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
1030 @curl_setopt($ch, CURLOPT_USERAGENT, $a->getUserAgent());
1032 $curl_info = @curl_getinfo($ch);
1034 $a->getProfiler()->saveTimestamp($stamp1, "network", System::callstack());
1036 if (substr($curl_info["content_type"], 0, 6) == "image/") {
1037 $text = "[url=" . $match[1] . "]" . $match[1] . "[/url]";
1039 $text = "[url=" . $match[2] . "]" . $match[2] . "[/url]";
1041 // if its not a picture then look if its a page that contains a picture link
1042 $body = Network::fetchUrl($match[1]);
1044 $doc = new DOMDocument();
1045 @$doc->loadHTML($body);
1046 $xpath = new DOMXPath($doc);
1047 $list = $xpath->query("//meta[@name]");
1048 foreach ($list as $node) {
1051 if ($node->attributes->length) {
1052 foreach ($node->attributes as $attribute) {
1053 $attr[$attribute->name] = $attribute->value;
1057 if (strtolower($attr["name"]) == "twitter:image") {
1058 $text = "[url=" . $attr["content"] . "]" . $attr["content"] . "[/url]";
1062 Cache::set($match[1], $text);
1068 private static function expandLinksCallback($match)
1070 if (($match[3] == "") || ($match[2] == $match[3]) || stristr($match[2], $match[3])) {
1071 return ($match[1] . "[url]" . $match[2] . "[/url]");
1073 return ($match[1] . $match[3] . " [url]" . $match[2] . "[/url]");
1077 private static function cleanPictureLinksCallback($match)
1079 $text = Cache::get($match[1]);
1081 if (is_null($text)) {
1082 $a = self::getApp();
1084 $stamp1 = microtime(true);
1086 $ch = @curl_init($match[1]);
1087 @curl_setopt($ch, CURLOPT_NOBODY, true);
1088 @curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
1089 @curl_setopt($ch, CURLOPT_USERAGENT, $a->getUserAgent());
1091 $curl_info = @curl_getinfo($ch);
1093 $a->getProfiler()->saveTimestamp($stamp1, "network", System::callstack());
1095 // if its a link to a picture then embed this picture
1096 if (substr($curl_info["content_type"], 0, 6) == "image/") {
1097 $text = "[img]" . $match[1] . "[/img]";
1099 $text = "[img]" . $match[2] . "[/img]";
1101 // if its not a picture then look if its a page that contains a picture link
1102 $body = Network::fetchUrl($match[1]);
1104 $doc = new DOMDocument();
1105 @$doc->loadHTML($body);
1106 $xpath = new DOMXPath($doc);
1107 $list = $xpath->query("//meta[@name]");
1108 foreach ($list as $node) {
1110 if ($node->attributes->length) {
1111 foreach ($node->attributes as $attribute) {
1112 $attr[$attribute->name] = $attribute->value;
1116 if (strtolower($attr["name"]) == "twitter:image") {
1117 $text = "[img]" . $attr["content"] . "[/img]";
1121 Cache::set($match[1], $text);
1127 public static function cleanPictureLinks($text)
1129 $return = preg_replace_callback("&\[url=([^\[\]]*)\]\[img\](.*)\[\/img\]\[\/url\]&Usi", 'self::cleanPictureLinksCallback', $text);
1134 * @brief Converts a BBCode message to HTML message
1136 * BBcode 2 HTML was written by WAY2WEB.net
1137 * extended to work with Mistpark/Friendica - Mike Macgirvin
1139 * Simple HTML values meaning:
1140 * - 0: Friendica display
1142 * - 2: Used for Windows Phone push, Friendica API
1143 * - 3: Used before converting to Markdown in bb2diaspora.php
1144 * - 4: Used for WordPress, Libertree (before Markdown), pump.io and tumblr
1147 * - 7: Used for dfrn, OStatus
1148 * - 8: Used for WP backlink text setting
1151 * @param string $text
1152 * @param bool $try_oembed
1153 * @param int $simple_html
1154 * @param bool $for_plaintext
1156 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
1158 public static function convert($text, $try_oembed = true, $simple_html = 0, $for_plaintext = false)
1160 $a = self::getApp();
1163 * preg_match_callback function to replace potential Oembed tags with Oembed content
1165 * $match[0] = [tag]$url[/tag] or [tag=$url]$title[/tag]
1167 * $match[2] = $title or absent
1169 $try_oembed_callback = function ($match)
1172 $title = defaults($match, 2, null);
1175 $return = OEmbed::getHTML($url, $title);
1176 } catch (Exception $ex) {
1177 $return = $match[0];
1183 // Extracting code blocks before the whitespace processing and the autolinker
1186 $text = preg_replace_callback("#\[code(?:=([^\]]*))?\](.*?)\[\/code\]#ism",
1187 function ($matches) use (&$codeblocks) {
1188 $return = '#codeblock-' . count($codeblocks) . '#';
1189 if (strpos($matches[2], "\n") !== false) {
1190 $codeblocks[] = '<pre><code class="language-' . trim($matches[1]) . '">' . trim($matches[2], "\n\r") . '</code></pre>';
1192 $codeblocks[] = '<code>' . $matches[2] . '</code>';
1200 // Hide all [noparse] contained bbtags by spacefying them
1201 // POSSIBLE BUG --> Will the 'preg' functions crash if there's an embedded image?
1203 $text = preg_replace_callback("/\[noparse\](.*?)\[\/noparse\]/ism", 'self::escapeNoparseCallback', $text);
1204 $text = preg_replace_callback("/\[nobb\](.*?)\[\/nobb\]/ism", 'self::escapeNoparseCallback', $text);
1205 $text = preg_replace_callback("/\[pre\](.*?)\[\/pre\]/ism", 'self::escapeNoparseCallback', $text);
1207 // Remove the abstract element. It is a non visible element.
1208 $text = self::stripAbstract($text);
1210 // Move all spaces out of the tags
1211 $text = preg_replace("/\[(\w*)\](\s*)/ism", '$2[$1]', $text);
1212 $text = preg_replace("/(\s*)\[\/(\w*)\]/ism", '[/$2]$1', $text);
1214 // Extract the private images which use data urls since preg has issues with
1215 // large data sizes. Stash them away while we do bbcode conversion, and then put them back
1216 // in after we've done all the regex matching. We cannot use any preg functions to do this.
1218 $extracted = self::extractImagesFromItemBody($text);
1219 $text = $extracted['body'];
1220 $saved_image = $extracted['images'];
1222 // If we find any event code, turn it into an event.
1223 // After we're finished processing the bbcode we'll
1224 // replace all of the event code with a reformatted version.
1226 $ev = Event::fromBBCode($text);
1228 // Replace any html brackets with HTML Entities to prevent executing HTML or script
1229 // Don't use strip_tags here because it breaks [url] search by replacing & with amp
1231 $text = str_replace("<", "<", $text);
1232 $text = str_replace(">", ">", $text);
1234 // remove some newlines before the general conversion
1235 $text = preg_replace("/\s?\[share(.*?)\]\s?(.*?)\s?\[\/share\]\s?/ism", "[share$1]$2[/share]", $text);
1236 $text = preg_replace("/\s?\[quote(.*?)\]\s?(.*?)\s?\[\/quote\]\s?/ism", "[quote$1]$2[/quote]", $text);
1238 // when the content is meant exporting to other systems then remove the avatar picture since this doesn't really look good on these systems
1240 $text = preg_replace("/\[share(.*?)avatar\s?=\s?'.*?'\s?(.*?)\]\s?(.*?)\s?\[\/share\]\s?/ism", "\n[share$1$2]$3[/share]", $text);
1243 // Convert new line chars to html <br /> tags
1245 // nlbr seems to be hopelessly messed up
1246 // $Text = nl2br($Text);
1248 // We'll emulate it.
1250 $text = trim($text);
1251 $text = str_replace("\r\n", "\n", $text);
1253 // Remove linefeeds inside of the table elements. See issue #6799
1254 $search = ["\n[th]", "[th]\n", " [th]", "\n[/th]", "[/th]\n", "[/th] ",
1255 "\n[td]", "[td]\n", " [td]", "\n[/td]", "[/td]\n", "[/td] ",
1256 "\n[tr]", "[tr]\n", " [tr]", "[tr] ", "\n[/tr]", "[/tr]\n", " [/tr]", "[/tr] ",
1257 "[table]\n", "[table] ", " [table]", "\n[/table]", " [/table]", "[/table] "];
1258 $replace = ["[th]", "[th]", "[th]", "[/th]", "[/th]", "[/th]",
1259 "[td]", "[td]", "[td]", "[/td]", "[/td]", "[/td]",
1260 "[tr]", "[tr]", "[tr]", "[tr]", "[/tr]", "[/tr]", "[/tr]", "[/tr]",
1261 "[table]", "[table]", "[table]", "[/table]", "[/table]", "[/table]"];
1264 $text = str_replace($search, $replace, $text);
1265 } while ($oldtext != $text);
1267 // Replace these here only once
1268 $search = ["\n[table]", "[/table]\n"];
1269 $replace = ["[table]", "[/table]"];
1270 $text = str_replace($search, $replace, $text);
1272 // removing multiplicated newlines
1273 if (Config::get("system", "remove_multiplicated_lines")) {
1274 $search = ["\n\n\n", "\n ", " \n", "[/quote]\n\n", "\n[/quote]", "[/li]\n", "\n[li]", "\n[ul]", "[/ul]\n", "\n\n[share ", "[/attachment]\n",
1275 "\n[h1]", "[/h1]\n", "\n[h2]", "[/h2]\n", "\n[h3]", "[/h3]\n", "\n[h4]", "[/h4]\n", "\n[h5]", "[/h5]\n", "\n[h6]", "[/h6]\n"];
1276 $replace = ["\n\n", "\n", "\n", "[/quote]\n", "[/quote]", "[/li]", "[li]", "[ul]", "[/ul]", "\n[share ", "[/attachment]",
1277 "[h1]", "[/h1]", "[h2]", "[/h2]", "[h3]", "[/h3]", "[h4]", "[/h4]", "[h5]", "[/h5]", "[h6]", "[/h6]"];
1280 $text = str_replace($search, $replace, $text);
1281 } while ($oldtext != $text);
1284 // Set up the parameters for a URL search string
1285 $URLSearchString = "^\[\]";
1286 // Set up the parameters for a MAIL search string
1287 $MAILSearchString = $URLSearchString;
1289 // Handle attached links or videos
1290 $text = self::convertAttachment($text, $simple_html, $try_oembed);
1292 // if the HTML is used to generate plain text, then don't do this search, but replace all URL of that kind to text
1293 if (!$for_plaintext) {
1294 $text = preg_replace(Strings::autoLinkRegEx(), '[url]$1[/url]', $text);
1295 if (in_array($simple_html, [7, 9])) {
1296 $text = preg_replace_callback("/\[url\]([$URLSearchString]*)\[\/url\]/ism", 'self::convertUrlForOStatusCallback', $text);
1297 $text = preg_replace_callback("/\[url\=([$URLSearchString]*)\]([$URLSearchString]*)\[\/url\]/ism", 'self::convertUrlForOStatusCallback', $text);
1300 $text = preg_replace("(\[url\]([$URLSearchString]*)\[\/url\])ism", " $1 ", $text);
1301 $text = preg_replace_callback("&\[url=([^\[\]]*)\]\[img\](.*)\[\/img\]\[\/url\]&Usi", 'self::removePictureLinksCallback', $text);
1304 $text = str_replace(["\r","\n"], ['<br />', '<br />'], $text);
1306 // Remove all hashtag addresses
1307 if ((!$try_oembed || $simple_html) && !in_array($simple_html, [3, 7, 9])) {
1308 $text = preg_replace("/([#@!])\[url\=([$URLSearchString]*)\](.*?)\[\/url\]/ism", '$1$3', $text);
1309 } elseif ($simple_html == 3) {
1310 // The ! is converted to @ since Diaspora only understands the @
1311 $text = preg_replace("/([@!])\[url\=([$URLSearchString]*)\](.*?)\[\/url\]/ism",
1312 '@<a href="$2">$3</a>',
1314 } elseif (in_array($simple_html, [7, 9])) {
1315 $text = preg_replace("/([@!])\[url\=([$URLSearchString]*)\](.*?)\[\/url\]/ism",
1316 '$1<span class="vcard"><a href="$2" class="url u-url mention" title="$3"><span class="fn nickname mention">$3</span></a></span>',
1318 } elseif (!$simple_html) {
1319 $text = preg_replace("/([@!])\[url\=([$URLSearchString]*)\](.*?)\[\/url\]/ism",
1320 '$1<a href="$2" class="userinfo mention" title="$3">$3</a>',
1324 // Bookmarks in red - will be converted to bookmarks in friendica
1325 $text = preg_replace("/#\^\[url\]([$URLSearchString]*)\[\/url\]/ism", '[bookmark=$1]$1[/bookmark]', $text);
1326 $text = preg_replace("/#\^\[url\=([$URLSearchString]*)\](.*?)\[\/url\]/ism", '[bookmark=$1]$2[/bookmark]', $text);
1327 $text = preg_replace("/#\[url\=[$URLSearchString]*\]\^\[\/url\]\[url\=([$URLSearchString]*)\](.*?)\[\/url\]/i",
1328 "[bookmark=$1]$2[/bookmark]", $text);
1330 if (in_array($simple_html, [2, 6, 7, 8])) {
1331 $text = preg_replace_callback("/([^#@!])\[url\=([^\]]*)\](.*?)\[\/url\]/ism", "self::expandLinksCallback", $text);
1332 //$Text = preg_replace("/[^#@!]\[url\=([^\]]*)\](.*?)\[\/url\]/ism", ' $2 [url]$1[/url]', $Text);
1333 $text = preg_replace("/\[bookmark\=([^\]]*)\](.*?)\[\/bookmark\]/ism", ' $2 [url]$1[/url]',$text);
1336 if ($simple_html == 5) {
1337 $text = preg_replace("/[^#@!]\[url\=([$URLSearchString]*)\](.*?)\[\/url\]/ism", '[url]$1[/url]', $text);
1340 // Perform URL Search
1342 $text = preg_replace_callback("/\[bookmark\=([^\]]*)\](.*?)\[\/bookmark\]/ism", $try_oembed_callback, $text);
1345 if ($simple_html == 5) {
1346 $text = preg_replace("/\[bookmark\=([^\]]*)\](.*?)\[\/bookmark\]/ism", '[url]$1[/url]', $text);
1348 $text = preg_replace("/\[bookmark\=([^\]]*)\](.*?)\[\/bookmark\]/ism", '[url=$1]$2[/url]', $text);
1351 // Handle Diaspora posts
1352 $text = preg_replace_callback(
1353 "&\[url=/?posts/([^\[\]]*)\](.*)\[\/url\]&Usi",
1355 return "[url=" . System::baseUrl() . "/display/" . $match[1] . "]" . $match[2] . "[/url]";
1359 $text = preg_replace_callback(
1360 "&\[url=/people\?q\=(.*)\](.*)\[\/url\]&Usi",
1362 return "[url=" . System::baseUrl() . "/search?search=%40" . $match[1] . "]" . $match[2] . "[/url]";
1366 // Server independent link to posts and comments
1367 // See issue: https://github.com/diaspora/diaspora_federation/issues/75
1368 $expression = "=diaspora://.*?/post/([0-9A-Za-z\-_@.:]{15,254}[0-9A-Za-z])=ism";
1369 $text = preg_replace($expression, System::baseUrl()."/display/$1", $text);
1373 * - #[url=<anything>]<term>[/url]
1374 * - [url=<anything>]#<term>[/url]
1376 $text = preg_replace_callback("/(?:#\[url\=[$URLSearchString]*\]|\[url\=[$URLSearchString]*\]#)(.*?)\[\/url\]/ism", function($matches) {
1378 . System::baseUrl() . '/search?tag=' . rawurlencode($matches[1])
1379 . '" class="tag" title="' . XML::escape($matches[1]) . '">'
1380 . XML::escape($matches[1])
1384 // We need no target="_blank" for local links
1385 // convert links start with System::baseUrl() as local link without the target="_blank" attribute
1386 $escapedBaseUrl = preg_quote(System::baseUrl(), '/');
1387 $text = preg_replace("/\[url\](".$escapedBaseUrl."[$URLSearchString]*)\[\/url\]/ism", '<a href="$1">$1</a>', $text);
1388 $text = preg_replace("/\[url\=(".$escapedBaseUrl."[$URLSearchString]*)\](.*?)\[\/url\]/ism", '<a href="$1">$2</a>', $text);
1390 $text = preg_replace("/\[url\]([$URLSearchString]*)\[\/url\]/ism", '<a href="$1" target="_blank">$1</a>', $text);
1391 $text = preg_replace("/\[url\=([$URLSearchString]*)\](.*?)\[\/url\]/ism", '<a href="$1" target="_blank">$2</a>', $text);
1393 // Red compatibility, though the link can't be authenticated on Friendica
1394 $text = preg_replace("/\[zrl\=([$URLSearchString]*)\](.*?)\[\/zrl\]/ism", '<a href="$1" target="_blank">$2</a>', $text);
1397 // we may need to restrict this further if it picks up too many strays
1398 // link acct:user@host to a webfinger profile redirector
1400 $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);
1402 // Perform MAIL Search
1403 $text = preg_replace("/\[mail\]([$MAILSearchString]*)\[\/mail\]/", '<a href="mailto:$1">$1</a>', $text);
1404 $text = preg_replace("/\[mail\=([$MAILSearchString]*)\](.*?)\[\/mail\]/", '<a href="mailto:$1">$2</a>', $text);
1406 // leave open the posibility of [map=something]
1407 // this is replaced in Item::prepareBody() which has knowledge of the item location
1409 if (strpos($text, '[/map]') !== false) {
1410 $text = preg_replace_callback(
1411 "/\[map\](.*?)\[\/map\]/ism",
1412 function ($match) use ($simple_html) {
1413 return str_replace($match[0], '<p class="map">' . Map::byLocation($match[1], $simple_html) . '</p>', $match[0]);
1418 if (strpos($text, '[map=') !== false) {
1419 $text = preg_replace_callback(
1420 "/\[map=(.*?)\]/ism",
1421 function ($match) use ($simple_html) {
1422 return str_replace($match[0], '<p class="map">' . Map::byCoordinates(str_replace('/', ' ', $match[1]), $simple_html) . '</p>', $match[0]);
1427 if (strpos($text, '[map]') !== false) {
1428 $text = preg_replace("/\[map\]/", '<p class="map"></p>', $text);
1431 // Check for headers
1432 $text = preg_replace("(\[h1\](.*?)\[\/h1\])ism", '<h1>$1</h1>', $text);
1433 $text = preg_replace("(\[h2\](.*?)\[\/h2\])ism", '<h2>$1</h2>', $text);
1434 $text = preg_replace("(\[h3\](.*?)\[\/h3\])ism", '<h3>$1</h3>', $text);
1435 $text = preg_replace("(\[h4\](.*?)\[\/h4\])ism", '<h4>$1</h4>', $text);
1436 $text = preg_replace("(\[h5\](.*?)\[\/h5\])ism", '<h5>$1</h5>', $text);
1437 $text = preg_replace("(\[h6\](.*?)\[\/h6\])ism", '<h6>$1</h6>', $text);
1439 // Check for paragraph
1440 $text = preg_replace("(\[p\](.*?)\[\/p\])ism", '<p>$1</p>', $text);
1442 // Check for bold text
1443 $text = preg_replace("(\[b\](.*?)\[\/b\])ism", '<strong>$1</strong>', $text);
1445 // Check for Italics text
1446 $text = preg_replace("(\[i\](.*?)\[\/i\])ism", '<em>$1</em>', $text);
1448 // Check for Underline text
1449 $text = preg_replace("(\[u\](.*?)\[\/u\])ism", '<u>$1</u>', $text);
1451 // Check for strike-through text
1452 $text = preg_replace("(\[s\](.*?)\[\/s\])ism", '<s>$1</s>', $text);
1454 // Check for over-line text
1455 $text = preg_replace("(\[o\](.*?)\[\/o\])ism", '<span class="overline">$1</span>', $text);
1457 // Check for colored text
1458 $text = preg_replace("(\[color=(.*?)\](.*?)\[\/color\])ism", "<span style=\"color: $1;\">$2</span>", $text);
1460 // Check for sized text
1461 // [size=50] --> font-size: 50px (with the unit).
1462 $text = preg_replace("(\[size=(\d*?)\](.*?)\[\/size\])ism", "<span style=\"font-size: $1px; line-height: initial;\">$2</span>", $text);
1463 $text = preg_replace("(\[size=(.*?)\](.*?)\[\/size\])ism", "<span style=\"font-size: $1; line-height: initial;\">$2</span>", $text);
1465 // Check for centered text
1466 $text = preg_replace("(\[center\](.*?)\[\/center\])ism", "<div style=\"text-align:center;\">$1</div>", $text);
1468 // Check for list text
1469 $text = str_replace("[*]", "<li>", $text);
1471 // Check for style sheet commands
1472 $text = preg_replace_callback(
1473 "(\[style=(.*?)\](.*?)\[\/style\])ism",
1475 return "<span style=\"" . HTML::sanitizeCSS($match[1]) . ";\">" . $match[2] . "</span>";
1480 // Check for CSS classes
1481 $text = preg_replace_callback(
1482 "(\[class=(.*?)\](.*?)\[\/class\])ism",
1484 return "<span class=\"" . HTML::sanitizeCSS($match[1]) . "\">" . $match[2] . "</span>";
1489 // handle nested lists
1492 while ((((strpos($text, "[/list]") !== false) && (strpos($text, "[list") !== false)) ||
1493 ((strpos($text, "[/ol]") !== false) && (strpos($text, "[ol]") !== false)) ||
1494 ((strpos($text, "[/ul]") !== false) && (strpos($text, "[ul]") !== false)) ||
1495 ((strpos($text, "[/li]") !== false) && (strpos($text, "[li]") !== false))) && (++$endlessloop < 20)) {
1496 $text = preg_replace("/\[list\](.*?)\[\/list\]/ism", '<ul class="listbullet" style="list-style-type: circle;">$1</ul>', $text);
1497 $text = preg_replace("/\[list=\](.*?)\[\/list\]/ism", '<ul class="listnone" style="list-style-type: none;">$1</ul>', $text);
1498 $text = preg_replace("/\[list=1\](.*?)\[\/list\]/ism", '<ul class="listdecimal" style="list-style-type: decimal;">$1</ul>', $text);
1499 $text = preg_replace("/\[list=((?-i)i)\](.*?)\[\/list\]/ism", '<ul class="listlowerroman" style="list-style-type: lower-roman;">$2</ul>', $text);
1500 $text = preg_replace("/\[list=((?-i)I)\](.*?)\[\/list\]/ism", '<ul class="listupperroman" style="list-style-type: upper-roman;">$2</ul>', $text);
1501 $text = preg_replace("/\[list=((?-i)a)\](.*?)\[\/list\]/ism", '<ul class="listloweralpha" style="list-style-type: lower-alpha;">$2</ul>', $text);
1502 $text = preg_replace("/\[list=((?-i)A)\](.*?)\[\/list\]/ism", '<ul class="listupperalpha" style="list-style-type: upper-alpha;">$2</ul>', $text);
1503 $text = preg_replace("/\[ul\](.*?)\[\/ul\]/ism", '<ul class="listbullet" style="list-style-type: circle;">$1</ul>', $text);
1504 $text = preg_replace("/\[ol\](.*?)\[\/ol\]/ism", '<ul class="listdecimal" style="list-style-type: decimal;">$1</ul>', $text);
1505 $text = preg_replace("/\[li\](.*?)\[\/li\]/ism", '<li>$1</li>', $text);
1508 $text = preg_replace("/\[th\](.*?)\[\/th\]/sm", '<th>$1</th>', $text);
1509 $text = preg_replace("/\[td\](.*?)\[\/td\]/sm", '<td>$1</td>', $text);
1510 $text = preg_replace("/\[tr\](.*?)\[\/tr\]/sm", '<tr>$1</tr>', $text);
1511 $text = preg_replace("/\[table\](.*?)\[\/table\]/sm", '<table>$1</table>', $text);
1513 $text = preg_replace("/\[table border=1\](.*?)\[\/table\]/sm", '<table border="1" >$1</table>', $text);
1514 $text = preg_replace("/\[table border=0\](.*?)\[\/table\]/sm", '<table border="0" >$1</table>', $text);
1516 $text = str_replace('[hr]', '<hr />', $text);
1518 // This is actually executed in Item::prepareBody()
1520 $text = str_replace('[nosmile]', '', $text);
1522 // Check for font change text
1523 $text = preg_replace("/\[font=(.*?)\](.*?)\[\/font\]/sm", "<span style=\"font-family: $1;\">$2</span>", $text);
1525 // Declare the format for [spoiler] layout
1526 $SpoilerLayout = '<blockquote class="spoiler">$1</blockquote>';
1528 // Check for [spoiler] text
1529 // handle nested quotes
1531 while ((strpos($text, "[/spoiler]") !== false) && (strpos($text, "[spoiler]") !== false) && (++$endlessloop < 20)) {
1532 $text = preg_replace("/\[spoiler\](.*?)\[\/spoiler\]/ism", "$SpoilerLayout", $text);
1535 // Check for [spoiler=Author] text
1537 $t_wrote = L10n::t('$1 wrote:');
1539 // handle nested quotes
1541 while ((strpos($text, "[/spoiler]")!== false) && (strpos($text, "[spoiler=") !== false) && (++$endlessloop < 20)) {
1542 $text = preg_replace("/\[spoiler=[\"\']*(.*?)[\"\']*\](.*?)\[\/spoiler\]/ism",
1543 "<br /><strong class=".'"spoiler"'.">" . $t_wrote . "</strong><blockquote class=".'"spoiler"'.">$2</blockquote>",
1547 // Declare the format for [quote] layout
1548 $QuoteLayout = '<blockquote>$1</blockquote>';
1550 // Check for [quote] text
1551 // handle nested quotes
1553 while ((strpos($text, "[/quote]") !== false) && (strpos($text, "[quote]") !== false) && (++$endlessloop < 20)) {
1554 $text = preg_replace("/\[quote\](.*?)\[\/quote\]/ism", "$QuoteLayout", $text);
1557 // Check for [quote=Author] text
1559 $t_wrote = L10n::t('$1 wrote:');
1561 // handle nested quotes
1563 while ((strpos($text, "[/quote]")!== false) && (strpos($text, "[quote=") !== false) && (++$endlessloop < 20)) {
1564 $text = preg_replace("/\[quote=[\"\']*(.*?)[\"\']*\](.*?)\[\/quote\]/ism",
1565 "<p><strong class=".'"author"'.">" . $t_wrote . "</strong></p><blockquote>$2</blockquote>",
1570 // [img=widthxheight]image source[/img]
1571 $text = preg_replace_callback(
1572 "/\[img\=([0-9]*)x([0-9]*)\](.*?)\[\/img\]/ism",
1573 function ($matches) use ($simple_html) {
1574 if (strpos($matches[3], "data:image/") === 0) {
1578 $matches[3] = self::proxyUrl($matches[3], $simple_html);
1579 return "[img=" . $matches[1] . "x" . $matches[2] . "]" . $matches[3] . "[/img]";
1584 $text = preg_replace("/\[img\=([0-9]*)x([0-9]*)\](.*?)\[\/img\]/ism", '<img src="$3" style="width: $1px;" >', $text);
1585 $text = preg_replace("/\[zmg\=([0-9]*)x([0-9]*)\](.*?)\[\/zmg\]/ism", '<img class="zrl" src="$3" style="width: $1px;" >', $text);
1587 $text = preg_replace_callback("/\[img\=([$URLSearchString]*)\](.*?)\[\/img\]/ism",
1588 function ($matches) use ($simple_html) {
1589 $matches[1] = self::proxyUrl($matches[1], $simple_html);
1590 $matches[2] = htmlspecialchars($matches[2], ENT_COMPAT);
1591 return '<img src="' . $matches[1] . '" alt="' . $matches[2] . '">';
1596 // [img]pathtoimage[/img]
1597 $text = preg_replace_callback(
1598 "/\[img\](.*?)\[\/img\]/ism",
1599 function ($matches) use ($simple_html) {
1600 if (strpos($matches[1], "data:image/") === 0) {
1604 $matches[1] = self::proxyUrl($matches[1], $simple_html);
1605 return "[img]" . $matches[1] . "[/img]";
1610 $text = preg_replace("/\[img\](.*?)\[\/img\]/ism", '<img src="$1" alt="' . L10n::t('Image/photo') . '" />', $text);
1611 $text = preg_replace("/\[zmg\](.*?)\[\/zmg\]/ism", '<img src="$1" alt="' . L10n::t('Image/photo') . '" />', $text);
1614 $text = self::convertShare(
1616 function (array $attributes, array $author_contact, $content, $is_quote_share) use ($simple_html) {
1617 return self::convertShareCallback($attributes, $author_contact, $content, $is_quote_share, $simple_html);
1621 $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);
1622 $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 />', $text);
1623 //$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);
1627 $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);
1628 $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);
1630 $text = preg_replace_callback("/\[video\](.*?)\[\/video\]/ism", $try_oembed_callback, $text);
1631 $text = preg_replace_callback("/\[audio\](.*?)\[\/audio\]/ism", $try_oembed_callback, $text);
1633 $text = preg_replace("/\[video\](.*?)\[\/video\]/ism",
1634 '<a href="$1" target="_blank">$1</a>', $text);
1635 $text = preg_replace("/\[audio\](.*?)\[\/audio\]/ism",
1636 '<a href="$1" target="_blank">$1</a>', $text);
1639 // html5 video and audio
1643 $text = preg_replace("/\[iframe\](.*?)\[\/iframe\]/ism", '<iframe src="$1" width="' . $a->videowidth . '" height="' . $a->videoheight . '"><a href="$1">$1</a></iframe>', $text);
1645 $text = preg_replace("/\[iframe\](.*?)\[\/iframe\]/ism", '<a href="$1">$1</a>', $text);
1648 // Youtube extensions
1650 $text = preg_replace_callback("/\[youtube\](https?:\/\/www.youtube.com\/watch\?v\=.*?)\[\/youtube\]/ism", $try_oembed_callback, $text);
1651 $text = preg_replace_callback("/\[youtube\](www.youtube.com\/watch\?v\=.*?)\[\/youtube\]/ism", $try_oembed_callback, $text);
1652 $text = preg_replace_callback("/\[youtube\](https?:\/\/youtu.be\/.*?)\[\/youtube\]/ism", $try_oembed_callback, $text);
1655 $text = preg_replace("/\[youtube\]https?:\/\/www.youtube.com\/watch\?v\=(.*?)\[\/youtube\]/ism", '[youtube]$1[/youtube]', $text);
1656 $text = preg_replace("/\[youtube\]https?:\/\/www.youtube.com\/embed\/(.*?)\[\/youtube\]/ism", '[youtube]$1[/youtube]', $text);
1657 $text = preg_replace("/\[youtube\]https?:\/\/youtu.be\/(.*?)\[\/youtube\]/ism", '[youtube]$1[/youtube]', $text);
1660 $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);
1662 $text = preg_replace("/\[youtube\]([A-Za-z0-9\-_=]+)(.*?)\[\/youtube\]/ism",
1663 '<a href="https://www.youtube.com/watch?v=$1" target="_blank">https://www.youtube.com/watch?v=$1</a>', $text);
1667 $text = preg_replace_callback("/\[vimeo\](https?:\/\/player.vimeo.com\/video\/[0-9]+).*?\[\/vimeo\]/ism", $try_oembed_callback, $text);
1668 $text = preg_replace_callback("/\[vimeo\](https?:\/\/vimeo.com\/[0-9]+).*?\[\/vimeo\]/ism", $try_oembed_callback, $text);
1671 $text = preg_replace("/\[vimeo\]https?:\/\/player.vimeo.com\/video\/([0-9]+)(.*?)\[\/vimeo\]/ism", '[vimeo]$1[/vimeo]', $text);
1672 $text = preg_replace("/\[vimeo\]https?:\/\/vimeo.com\/([0-9]+)(.*?)\[\/vimeo\]/ism", '[vimeo]$1[/vimeo]', $text);
1675 $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);
1677 $text = preg_replace("/\[vimeo\]([0-9]+)(.*?)\[\/vimeo\]/ism",
1678 '<a href="https://vimeo.com/$1" target="_blank">https://vimeo.com/$1</a>', $text);
1682 $text = OEmbed::BBCode2HTML($text);
1684 // Avoid triple linefeeds through oembed
1685 $text = str_replace("<br style='clear:left'></span><br /><br />", "<br style='clear:left'></span><br />", $text);
1687 // If we found an event earlier, strip out all the event code and replace with a reformatted version.
1688 // Replace the event-start section with the entire formatted event. The other bbcode is stripped.
1689 // Summary (e.g. title) is required, earlier revisions only required description (in addition to
1690 // start which is always required). Allow desc with a missing summary for compatibility.
1692 if ((!empty($ev['desc']) || !empty($ev['summary'])) && !empty($ev['start'])) {
1693 $sub = Event::getHTML($ev, $simple_html);
1695 $text = preg_replace("/\[event\-summary\](.*?)\[\/event\-summary\]/ism", '', $text);
1696 $text = preg_replace("/\[event\-description\](.*?)\[\/event\-description\]/ism", '', $text);
1697 $text = preg_replace("/\[event\-start\](.*?)\[\/event\-start\]/ism", $sub, $text);
1698 $text = preg_replace("/\[event\-finish\](.*?)\[\/event\-finish\]/ism", '', $text);
1699 $text = preg_replace("/\[event\-location\](.*?)\[\/event\-location\]/ism", '', $text);
1700 $text = preg_replace("/\[event\-adjust\](.*?)\[\/event\-adjust\]/ism", '', $text);
1701 $text = preg_replace("/\[event\-id\](.*?)\[\/event\-id\]/ism", '', $text);
1704 // Replace non graphical smilies for external posts
1706 $text = Smilies::replace($text);
1709 // Unhide all [noparse] contained bbtags unspacefying them
1710 // and triming the [noparse] tag.
1712 $text = preg_replace_callback("/\[noparse\](.*?)\[\/noparse\]/ism", 'self::unescapeNoparseCallback', $text);
1713 $text = preg_replace_callback("/\[nobb\](.*?)\[\/nobb\]/ism", 'self::unescapeNoparseCallback', $text);
1714 $text = preg_replace_callback("/\[pre\](.*?)\[\/pre\]/ism", 'self::unescapeNoparseCallback', $text);
1716 /// @todo What is the meaning of these lines?
1717 $text = preg_replace('/\[\&\;([#a-z0-9]+)\;\]/', '&$1;', $text);
1718 $text = preg_replace('/\&\#039\;/', '\'', $text);
1720 // Currently deactivated, it made problems with " inside of alt texts.
1721 //$text = preg_replace('/\"\;/', '"', $text);
1723 // fix any escaped ampersands that may have been converted into links
1724 $text = preg_replace('/\<([^>]*?)(src|href)=(.*?)\&\;(.*?)\>/ism', '<$1$2=$3&$4>', $text);
1726 // sanitizes src attributes (http and redir URLs for displaying in a web page, cid used for inline images in emails)
1727 $allowed_src_protocols = ['http', 'redir', 'cid'];
1728 $text = preg_replace('#<([^>]*?)(src)="(?!' . implode('|', $allowed_src_protocols) . ')(.*?)"(.*?)>#ism',
1729 '<$1$2=""$4 data-original-src="$3" class="invalid-src" title="' . L10n::t('Invalid source protocol') . '">', $text);
1731 // sanitize href attributes (only whitelisted protocols URLs)
1732 // default value for backward compatibility
1733 $allowed_link_protocols = Config::get('system', 'allowed_link_protocols', ['ftp', 'mailto', 'gopher', 'cid']);
1735 // Always allowed protocol even if config isn't set or not including it
1736 $allowed_link_protocols[] = 'http';
1737 $allowed_link_protocols[] = 'redir/';
1739 $regex = '#<([^>]*?)(href)="(?!' . implode('|', $allowed_link_protocols) . ')(.*?)"(.*?)>#ism';
1740 $text = preg_replace($regex, '<$1$2="javascript:void(0)"$4 data-original-href="$3" class="invalid-href" title="' . L10n::t('Invalid link protocol') . '">', $text);
1743 $text = self::interpolateSavedImagesIntoItemBody($text, $saved_image);
1746 // Restore code blocks
1747 $text = preg_replace_callback('/#codeblock-([0-9]+)#/iU',
1748 function ($matches) use ($codeblocks) {
1749 $return = $matches[0];
1750 if (isset($codeblocks[intval($matches[1])])) {
1751 $return = $codeblocks[$matches[1]];
1758 // Clean up the HTML by loading and saving the HTML with the DOM.
1759 // Bad structured html can break a whole page.
1760 // For performance reasons do it only with activated item cache or at export.
1761 if (!$try_oembed || (get_itemcachepath() != "")) {
1762 $doc = new DOMDocument();
1763 $doc->preserveWhiteSpace = false;
1765 $text = mb_convert_encoding($text, 'HTML-ENTITIES', "UTF-8");
1767 $doctype = '<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" "http://www.w3.org/TR/REC-html40/loose.dtd">';
1768 $encoding = '<?xml encoding="UTF-8">';
1769 @$doc->loadHTML($encoding.$doctype."<html><body>".$text."</body></html>");
1770 $doc->encoding = 'UTF-8';
1771 $text = $doc->saveHTML();
1772 $text = str_replace(["<html><body>", "</body></html>", $doctype, $encoding], ["", "", "", ""], $text);
1774 $text = str_replace('<br></li>', '</li>', $text);
1776 //$Text = mb_convert_encoding($Text, "UTF-8", 'HTML-ENTITIES');
1779 // Clean up some useless linebreaks in lists
1780 //$Text = str_replace('<br /><ul', '<ul ', $Text);
1781 //$Text = str_replace('</ul><br />', '</ul>', $Text);
1782 //$Text = str_replace('</li><br />', '</li>', $Text);
1783 //$Text = str_replace('<br /><li>', '<li>', $Text);
1784 //$Text = str_replace('<br /><ul', '<ul ', $Text);
1786 Hook::callAll('bbcode', $text);
1792 * @brief Strips the "abstract" tag from the provided text
1794 * @param string $text The text with BBCode
1795 * @return string The same text - but without "abstract" element
1797 public static function stripAbstract($text)
1799 $text = preg_replace("/[\s|\n]*\[abstract\].*?\[\/abstract\][\s|\n]*/ism", '', $text);
1800 $text = preg_replace("/[\s|\n]*\[abstract=.*?\].*?\[\/abstract][\s|\n]*/ism", '', $text);
1806 * @brief Returns the value of the "abstract" element
1808 * @param string $text The text that maybe contains the element
1809 * @param string $addon The addon for which the abstract is meant for
1810 * @return string The abstract
1812 public static function getAbstract($text, $addon = "")
1816 $addon = strtolower($addon);
1818 if (preg_match_all("/\[abstract=(.*?)\](.*?)\[\/abstract\]/ism", $text, $results, PREG_SET_ORDER)) {
1819 foreach ($results AS $result) {
1820 $abstracts[strtolower($result[1])] = $result[2];
1824 if (isset($abstracts[$addon])) {
1825 $abstract = $abstracts[$addon];
1828 if ($abstract == "" && preg_match("/\[abstract\](.*?)\[\/abstract\]/ism", $text, $result)) {
1829 $abstract = $result[1];
1836 * @brief Callback function to replace a Friendica style mention in a mention for Diaspora
1838 * @param array $match Matching values for the callback
1839 * [1] = Mention type (! or @)
1842 * @return string Replaced mention
1843 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
1844 * @throws \ImagickException
1846 private static function bbCodeMention2DiasporaCallback($match)
1848 $contact = Contact::getDetailsByURL($match[3]);
1850 if (empty($contact['addr'])) {
1851 $contact = Probe::uri($match[3]);
1854 if (empty($contact['addr'])) {
1858 $mention = $match[1] . '{' . $match[2] . '; ' . $contact['addr'] . '}';
1863 * @brief Converts a BBCode text into Markdown
1865 * This function converts a BBCode item body to be sent to Markdown-enabled
1866 * systems like Diaspora and Libertree
1868 * @param string $text
1869 * @param bool $for_diaspora Diaspora requires more changes than Libertree
1871 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
1873 public static function toMarkdown($text, $for_diaspora = true)
1875 $a = self::getApp();
1877 $original_text = $text;
1879 // Since Diaspora is creating a summary for links, this function removes them before posting
1880 if ($for_diaspora) {
1881 $text = self::removeShareInformation($text);
1885 * Transform #tags, strip off the [url] and replace spaces with underscore
1887 $url_search_string = "^\[\]";
1888 $text = preg_replace_callback("/#\[url\=([$url_search_string]*)\](.*?)\[\/url\]/i",
1889 function ($matches) {
1890 return '#' . str_replace(' ', '_', $matches[2]);
1895 // Converting images with size parameters to simple images. Markdown doesn't know it.
1896 $text = preg_replace("/\[img\=([0-9]*)x([0-9]*)\](.*?)\[\/img\]/ism", '[img]$3[/img]', $text);
1898 // Convert it to HTML - don't try oembed
1899 if ($for_diaspora) {
1900 $text = self::convert($text, false, 3);
1902 // Add all tags that maybe were removed
1903 if (preg_match_all("/#\[url\=([$url_search_string]*)\](.*?)\[\/url\]/ism", $original_text, $tags)) {
1905 foreach ($tags[2] as $tag) {
1906 $tag = html_entity_decode($tag, ENT_QUOTES, 'UTF-8');
1907 if (!strpos(html_entity_decode($text, ENT_QUOTES, 'UTF-8'), '#' . $tag)) {
1908 $tagline .= '#' . $tag . ' ';
1911 $text = $text . " " . $tagline;
1914 $text = self::convert($text, false, 4);
1917 // mask some special HTML chars from conversation to markdown
1918 $text = str_replace(['<', '>', '&'], ['&_lt_;', '&_gt_;', '&_amp_;'], $text);
1920 // If a link is followed by a quote then there should be a newline before it
1921 // Maybe we should make this newline at every time before a quote.
1922 $text = str_replace(["</a><blockquote>"], ["</a><br><blockquote>"], $text);
1924 $stamp1 = microtime(true);
1926 // Now convert HTML to Markdown
1927 $text = HTML::toMarkdown($text);
1929 // unmask the special chars back to HTML
1930 $text = str_replace(['&\_lt\_;', '&\_gt\_;', '&\_amp\_;'], ['<', '>', '&'], $text);
1932 $a->getProfiler()->saveTimestamp($stamp1, "parser", System::callstack());
1934 // Libertree has a problem with escaped hashtags.
1935 $text = str_replace(['\#'], ['#'], $text);
1937 // Remove any leading or trailing whitespace, as this will mess up
1938 // the Diaspora signature verification and cause the item to disappear
1939 $text = trim($text);
1941 if ($for_diaspora) {
1942 $url_search_string = "^\[\]";
1943 $text = preg_replace_callback(
1944 "/([@!])\[(.*?)\]\(([$url_search_string]*?)\)/ism",
1945 ['self', 'bbCodeMention2DiasporaCallback'],
1950 Hook::callAll('bb2diaspora', $text);
1956 * @brief Pull out all #hashtags and @person tags from $string.
1958 * We also get @person@domain.com - which would make
1959 * the regex quite complicated as tags can also
1960 * end a sentence. So we'll run through our results
1961 * and strip the period from any tags which end with one.
1962 * Returns array of tags found, or empty array.
1964 * @param string $string Post content
1966 * @return array List of tag and person names
1968 public static function getTags($string)
1972 // Convert hashtag links to hashtags
1973 $string = preg_replace('/#\[url\=([^\[\]]*)\](.*?)\[\/url\]/ism', '#$2', $string);
1975 // ignore anything in a code block
1976 $string = preg_replace('/\[code.*?\].*?\[\/code\]/sm', '', $string);
1978 // Force line feeds at bbtags
1979 $string = str_replace(['[', ']'], ["\n[", "]\n"], $string);
1981 // ignore anything in a bbtag
1982 $string = preg_replace('/\[(.*?)\]/sm', '', $string);
1984 // Match full names against @tags including the space between first and last
1985 // We will look these up afterward to see if they are full names or not recognisable.
1987 if (preg_match_all('/(@[^ \x0D\x0A,:?]+ [^ \x0D\x0A@,:?]+)([ \x0D\x0A@,:?]|$)/', $string, $matches)) {
1988 foreach ($matches[1] as $match) {
1989 if (strstr($match, ']')) {
1990 // we might be inside a bbcode color tag - leave it alone
1994 if (substr($match, -1, 1) === '.') {
1995 $ret[] = substr($match, 0, -1);
2002 // Otherwise pull out single word tags. These can be @nickname, @first_last
2005 if (preg_match_all('/([!#@][^\^ \x0D\x0A,;:?]+)([ \x0D\x0A,;:?]|$)/', $string, $matches)) {
2006 foreach ($matches[1] as $match) {
2007 if (strstr($match, ']')) {
2008 // we might be inside a bbcode color tag - leave it alone
2011 if (substr($match, -1, 1) === '.') {
2012 $match = substr($match,0,-1);
2014 // ignore strictly numeric tags like #1
2015 if ((strpos($match, '#') === 0) && ctype_digit(substr($match, 1))) {
2018 // try not to catch url fragments
2019 if (strpos($string, $match) && preg_match('/[a-zA-z0-9\/]/', substr($string, strpos($string, $match) - 1, 1))) {