4 * @file src/Content/Text/HTML.php
7 namespace Friendica\Content\Text;
11 use Friendica\Core\Addon;
12 use Friendica\Util\Network;
13 use Friendica\Util\XML;
17 public static function sanitizeCSS($input)
21 $input = strtolower($input);
23 for ($i = 0; $i < strlen($input); $i++) {
24 $char = substr($input, $i, 1);
26 if (($char >= "a") && ($char <= "z")) {
30 if (!(strpos(" #;:0123456789-_.%", $char) === false)) {
38 private static function tagToBBCode(DOMDocument $doc, $tag, $attributes, $startbb, $endbb)
41 $done = self::tagToBBCodeSub($doc, $tag, $attributes, $startbb, $endbb);
45 private static function tagToBBCodeSub(DOMDocument $doc, $tag, $attributes, $startbb, $endbb)
47 $savestart = str_replace('$', '\x01', $startbb);
50 $xpath = new DOMXPath($doc);
52 $list = $xpath->query("//" . $tag);
53 foreach ($list as $node) {
55 if ($node->attributes->length) {
56 foreach ($node->attributes as $attribute) {
57 $attr[$attribute->name] = $attribute->value;
63 $startbb = $savestart;
67 foreach ($attributes as $attribute => $value) {
68 $startbb = str_replace('\x01' . ++$i, '$1', $startbb);
69 if (strpos('*' . $startbb, '$1') > 0) {
70 if ($replace && (@$attr[$attribute] != '')) {
71 $startbb = preg_replace($value, $startbb, $attr[$attribute], -1, $count);
73 // If nothing could be changed
81 if (@$attr[$attribute] != $value) {
88 $StartCode = $doc->createTextNode($startbb);
89 $EndCode = $doc->createTextNode($endbb);
91 $node->parentNode->insertBefore($StartCode, $node);
93 if ($node->hasChildNodes()) {
94 foreach ($node->childNodes as $child) {
95 $newNode = $child->cloneNode(true);
96 $node->parentNode->insertBefore($newNode, $node);
100 $node->parentNode->insertBefore($EndCode, $node);
101 $node->parentNode->removeChild($node);
109 * Made by: ike@piratenpartei.de
110 * Originally made for the syncom project: http://wiki.piratenpartei.de/Syncom
111 * https://github.com/annando/Syncom
113 * @brief Converter for HTML to BBCode
114 * @param string $message
115 * @param string $basepath
118 public static function toBBCode($message, $basepath = '')
120 $message = str_replace("\r", "", $message);
122 // Removing code blocks before the whitespace removal processing below
124 $message = preg_replace_callback(
125 '#<pre><code(?: class="([^"]*)")?>(.*)</code></pre>#iUs',
126 function ($matches) use (&$codeblocks) {
127 $return = '[codeblock-' . count($codeblocks) . ']';
130 if ($matches[1] != '') {
131 $prefix = '[code=' . $matches[1] . ']';
134 $codeblocks[] = $prefix . trim($matches[2]) . '[/code]';
140 $message = str_replace(
151 $message = preg_replace('=<(\w+):(.+?)>=', '<removeme>', $message);
152 $message = preg_replace('=</(\w+):(.+?)>=', '</removeme>', $message);
154 $doc = new DOMDocument();
155 $doc->preserveWhiteSpace = false;
157 $message = mb_convert_encoding($message, 'HTML-ENTITIES', "UTF-8");
159 @$doc->loadHTML($message);
161 XML::deleteNode($doc, 'style');
162 XML::deleteNode($doc, 'head');
163 XML::deleteNode($doc, 'title');
164 XML::deleteNode($doc, 'meta');
165 XML::deleteNode($doc, 'xml');
166 XML::deleteNode($doc, 'removeme');
168 $xpath = new DomXPath($doc);
169 $list = $xpath->query("//pre");
170 foreach ($list as $node) {
171 $node->nodeValue = str_replace("\n", "\r", $node->nodeValue);
174 $message = $doc->saveHTML();
175 $message = str_replace(["\n<", ">\n", "\r", "\n", "\xC3\x82\xC2\xA0"], ["<", ">", "<br />", " ", ""], $message);
176 $message = preg_replace('= [\s]*=i', " ", $message);
177 @$doc->loadHTML($message);
179 self::tagToBBCode($doc, 'html', [], "", "");
180 self::tagToBBCode($doc, 'body', [], "", "");
182 // Outlook-Quote - Variant 1
183 self::tagToBBCode($doc, 'p', ['class' => 'MsoNormal', 'style' => 'margin-left:35.4pt'], '[quote]', '[/quote]');
185 // Outlook-Quote - Variant 2
186 self::tagToBBCode($doc, 'div', ['style' => 'border:none;border-left:solid blue 1.5pt;padding:0cm 0cm 0cm 4.0pt'],
187 '[quote]', '[/quote]');
190 self::tagToBBCode($doc, 'span', ['style' => 'text-decoration: underline;'], '[u]', '[/u]');
191 self::tagToBBCode($doc, 'span', ['style' => 'font-style: italic;'], '[i]', '[/i]');
192 self::tagToBBCode($doc, 'span', ['style' => 'font-weight: bold;'], '[b]', '[/b]');
194 /* self::node2BBCode($doc, 'font', array('face'=>'/([\w ]+)/', 'size'=>'/(\d+)/', 'color'=>'/(.+)/'), '[font=$1][size=$2][color=$3]', '[/color][/size][/font]');
195 self::node2BBCode($doc, 'font', array('size'=>'/(\d+)/', 'color'=>'/(.+)/'), '[size=$1][color=$2]', '[/color][/size]');
196 self::node2BBCode($doc, 'font', array('face'=>'/([\w ]+)/', 'size'=>'/(.+)/'), '[font=$1][size=$2]', '[/size][/font]');
197 self::node2BBCode($doc, 'font', array('face'=>'/([\w ]+)/', 'color'=>'/(.+)/'), '[font=$1][color=$3]', '[/color][/font]');
198 self::node2BBCode($doc, 'font', array('face'=>'/([\w ]+)/'), '[font=$1]', '[/font]');
199 self::node2BBCode($doc, 'font', array('size'=>'/(\d+)/'), '[size=$1]', '[/size]');
200 self::node2BBCode($doc, 'font', array('color'=>'/(.+)/'), '[color=$1]', '[/color]');
203 //self::node2BBCode($doc, 'span', array('style'=>'/.*font-size:\s*(.+?)[,;].*font-family:\s*(.+?)[,;].*color:\s*(.+?)[,;].*/'), '[size=$1][font=$2][color=$3]', '[/color][/font][/size]');
204 //self::node2BBCode($doc, 'span', array('style'=>'/.*font-size:\s*(\d+)[,;].*/'), '[size=$1]', '[/size]');
205 //self::node2BBCode($doc, 'span', array('style'=>'/.*font-size:\s*(.+?)[,;].*/'), '[size=$1]', '[/size]');
207 self::tagToBBCode($doc, 'span', ['style' => '/.*color:\s*(.+?)[,;].*/'], '[color="$1"]', '[/color]');
209 //self::node2BBCode($doc, 'span', array('style'=>'/.*font-family:\s*(.+?)[,;].*/'), '[font=$1]', '[/font]');
210 //self::node2BBCode($doc, 'div', array('style'=>'/.*font-family:\s*(.+?)[,;].*font-size:\s*(\d+?)pt.*/'), '[font=$1][size=$2]', '[/size][/font]');
211 //self::node2BBCode($doc, 'div', array('style'=>'/.*font-family:\s*(.+?)[,;].*font-size:\s*(\d+?)px.*/'), '[font=$1][size=$2]', '[/size][/font]');
212 //self::node2BBCode($doc, 'div', array('style'=>'/.*font-family:\s*(.+?)[,;].*/'), '[font=$1]', '[/font]');
213 // Importing the classes - interesting for importing of posts from third party networks that were exported from friendica
215 //self::node2BBCode($doc, 'span', array('class'=>'/([\w ]+)/'), '[class=$1]', '[/class]');
216 self::tagToBBCode($doc, 'span', ['class' => 'type-link'], '[class=type-link]', '[/class]');
217 self::tagToBBCode($doc, 'span', ['class' => 'type-video'], '[class=type-video]', '[/class]');
219 self::tagToBBCode($doc, 'strong', [], '[b]', '[/b]');
220 self::tagToBBCode($doc, 'em', [], '[i]', '[/i]');
221 self::tagToBBCode($doc, 'b', [], '[b]', '[/b]');
222 self::tagToBBCode($doc, 'i', [], '[i]', '[/i]');
223 self::tagToBBCode($doc, 'u', [], '[u]', '[/u]');
224 self::tagToBBCode($doc, 's', [], '[s]', '[/s]');
225 self::tagToBBCode($doc, 'del', [], '[s]', '[/s]');
226 self::tagToBBCode($doc, 'strike', [], '[s]', '[/s]');
228 self::tagToBBCode($doc, 'big', [], "[size=large]", "[/size]");
229 self::tagToBBCode($doc, 'small', [], "[size=small]", "[/size]");
231 self::tagToBBCode($doc, 'blockquote', [], '[quote]', '[/quote]');
233 self::tagToBBCode($doc, 'br', [], "\n", '');
235 self::tagToBBCode($doc, 'p', ['class' => 'MsoNormal'], "\n", "");
236 self::tagToBBCode($doc, 'div', ['class' => 'MsoNormal'], "\r", "");
238 self::tagToBBCode($doc, 'span', [], "", "");
240 self::tagToBBCode($doc, 'span', [], "", "");
241 self::tagToBBCode($doc, 'pre', [], "", "");
243 self::tagToBBCode($doc, 'div', [], "\r", "\r");
244 self::tagToBBCode($doc, 'p', [], "\n", "\n");
246 self::tagToBBCode($doc, 'ul', [], "[list]", "[/list]");
247 self::tagToBBCode($doc, 'ol', [], "[list=1]", "[/list]");
248 self::tagToBBCode($doc, 'li', [], "[*]", "");
250 self::tagToBBCode($doc, 'hr', [], "[hr]", "");
252 self::tagToBBCode($doc, 'table', [], "", "");
253 self::tagToBBCode($doc, 'tr', [], "\n", "");
254 self::tagToBBCode($doc, 'td', [], "\t", "");
255 //self::node2BBCode($doc, 'table', array(), "[table]", "[/table]");
256 //self::node2BBCode($doc, 'th', array(), "[th]", "[/th]");
257 //self::node2BBCode($doc, 'tr', array(), "[tr]", "[/tr]");
258 //self::node2BBCode($doc, 'td', array(), "[td]", "[/td]");
259 //self::node2BBCode($doc, 'h1', array(), "\n\n[size=xx-large][b]", "[/b][/size]\n");
260 //self::node2BBCode($doc, 'h2', array(), "\n\n[size=x-large][b]", "[/b][/size]\n");
261 //self::node2BBCode($doc, 'h3', array(), "\n\n[size=large][b]", "[/b][/size]\n");
262 //self::node2BBCode($doc, 'h4', array(), "\n\n[size=medium][b]", "[/b][/size]\n");
263 //self::node2BBCode($doc, 'h5', array(), "\n\n[size=small][b]", "[/b][/size]\n");
264 //self::node2BBCode($doc, 'h6', array(), "\n\n[size=x-small][b]", "[/b][/size]\n");
266 self::tagToBBCode($doc, 'h1', [], "[h1]", "[/h1]");
267 self::tagToBBCode($doc, 'h2', [], "[h2]", "[/h2]");
268 self::tagToBBCode($doc, 'h3', [], "[h3]", "[/h3]");
269 self::tagToBBCode($doc, 'h4', [], "[h4]", "[/h4]");
270 self::tagToBBCode($doc, 'h5', [], "[h5]", "[/h5]");
271 self::tagToBBCode($doc, 'h6', [], "[h6]", "[/h6]");
273 self::tagToBBCode($doc, 'a', ['href' => '/mailto:(.+)/'], '[mail=$1]', '[/mail]');
274 self::tagToBBCode($doc, 'a', ['href' => '/(.+)/'], '[url=$1]', '[/url]');
276 self::tagToBBCode($doc, 'img', ['src' => '/(.+)/', 'width' => '/(\d+)/', 'height' => '/(\d+)/'], '[img=$2x$3]$1',
278 self::tagToBBCode($doc, 'img', ['src' => '/(.+)/'], '[img]$1', '[/img]');
281 self::tagToBBCode($doc, 'video', ['src' => '/(.+)/'], '[video]$1', '[/video]');
282 self::tagToBBCode($doc, 'audio', ['src' => '/(.+)/'], '[audio]$1', '[/audio]');
283 self::tagToBBCode($doc, 'iframe', ['src' => '/(.+)/'], '[iframe]$1', '[/iframe]');
285 self::tagToBBCode($doc, 'key', [], '[code]', '[/code]');
286 self::tagToBBCode($doc, 'code', [], '[code]', '[/code]');
288 $message = $doc->saveHTML();
290 // I'm removing something really disturbing
291 // Don't know exactly what it is
292 $message = str_replace(chr(194) . chr(160), ' ', $message);
294 $message = str_replace(" ", " ", $message);
296 // removing multiple DIVs
297 $message = preg_replace('=\r *\r=i', "\n", $message);
298 $message = str_replace("\r", "\n", $message);
300 Addon::callHooks('html2bbcode', $message);
302 $message = strip_tags($message);
304 $message = html_entity_decode($message, ENT_QUOTES, 'UTF-8');
306 $message = str_replace(["<"], ["<"], $message);
308 // remove quotes if they don't make sense
309 $message = preg_replace('=\[/quote\][\s]*\[quote\]=i', "\n", $message);
311 $message = preg_replace('=\[quote\]\s*=i', "[quote]", $message);
312 $message = preg_replace('=\s*\[/quote\]=i', "[/quote]", $message);
315 $oldmessage = $message;
316 $message = str_replace("\n \n", "\n\n", $message);
317 } while ($oldmessage != $message);
320 $oldmessage = $message;
321 $message = str_replace("\n\n\n", "\n\n", $message);
322 } while ($oldmessage != $message);
325 $oldmessage = $message;
326 $message = str_replace(
348 } while ($message != $oldmessage);
350 $message = str_replace(
351 ['[b][b]', '[/b][/b]', '[i][i]', '[/i][/i]'], ['[b]', '[/b]', '[i]', '[/i]'], $message
354 // Handling Yahoo style of mails
355 $message = str_replace('[hr][b]From:[/b]', '[quote][b]From:[/b]', $message);
357 // Restore code blocks
358 $message = preg_replace_callback(
359 '#\[codeblock-([0-9]+)\]#iU',
360 function ($matches) use ($codeblocks) {
362 if (isset($codeblocks[intval($matches[1])])) {
363 $return = $codeblocks[$matches[1]];
370 $message = trim($message);
372 if ($basepath != '') {
373 $message = self::qualifyURLs($message, $basepath);
380 * @brief Sub function to complete incomplete URL
382 * @param array $matches Result of preg_replace_callback
383 * @param string $basepath Basepath that is used to complete the URL
385 * @return string The expanded URL
387 private static function qualifyURLsSub($matches, $basepath)
389 $base = parse_url($basepath);
390 unset($base['query']);
391 unset($base['fragment']);
396 $parts = array_merge($base, parse_url($url));
397 $url2 = Network::unparseURL($parts);
399 return str_replace($url, $url2, $link);
403 * @brief Complete incomplete URLs in BBCode
405 * @param string $body Body with URLs
406 * @param string $basepath Base path that is used to complete the URL
408 * @return string Body with expanded URLs
410 private static function qualifyURLs($body, $basepath)
412 $URLSearchString = "^\[\]";
414 $matches = ["/\[url\=([$URLSearchString]*)\].*?\[\/url\]/ism",
415 "/\[url\]([$URLSearchString]*)\[\/url\]/ism",
416 "/\[img\=[0-9]*x[0-9]*\](.*?)\[\/img\]/ism",
417 "/\[img\](.*?)\[\/img\]/ism",
418 "/\[zmg\=[0-9]*x[0-9]*\](.*?)\[\/img\]/ism",
419 "/\[zmg\](.*?)\[\/zmg\]/ism",
420 "/\[video\](.*?)\[\/video\]/ism",
421 "/\[audio\](.*?)\[\/audio\]/ism",
424 foreach ($matches as $match) {
425 $body = preg_replace_callback(
426 $match, function ($match) use ($basepath) {
427 return self::qualifyURLsSub($match, $basepath);
435 private static function breakLines($line, $level, $wraplength = 75)
437 if ($wraplength == 0) {
438 $wraplength = 2000000;
441 $wraplen = $wraplength - $level;
448 $subline = substr($line, 0, $wraplen);
450 $pos = strrpos($subline, ' ');
453 $pos = strpos($line, ' ');
456 if (($pos > 0) && strlen($line) > $wraplen) {
457 $newline = trim(substr($line, 0, $pos));
459 $newline = str_repeat(">", $level) . ' ' . $newline;
462 $newlines[] = $newline . " ";
463 $line = substr($line, $pos + 1);
465 } while ((strlen($line) > $wraplen) && !($oldline == $line));
468 $line = str_repeat(">", $level) . ' ' . $line;
473 return implode($newlines, "\n");
476 private static function quoteLevel($message, $wraplength = 75)
478 $lines = explode("\n", $message);
482 foreach ($lines as $line) {
485 while (strpos("*" . $line, '[quote]') > 0) {
487 $pos = strpos($line, '[quote]');
488 $line = substr($line, 0, $pos) . substr($line, $pos + 7);
494 while (strpos("*" . $line, '[/quote]') > 0) {
500 $pos = strpos($line, '[/quote]');
501 $line = substr($line, 0, $pos) . substr($line, $pos + 8);
504 if (!$startquote || ($line != '')) {
505 $newlines[] = self::breakLines($line, $currlevel, $wraplength);
509 return implode($newlines, "\n");
512 private static function collectURLs($message)
514 $pattern = '/<a.*?href="(.*?)".*?>(.*?)<\/a>/is';
515 preg_match_all($pattern, $message, $result, PREG_SET_ORDER);
518 foreach ($result as $treffer) {
521 // A list of some links that should be ignored
522 $list = ["/user/", "/tag/", "/group/", "/profile/", "/search?search=", "/search?tag=", "mailto:", "/u/", "/node/",
523 "//plus.google.com/", "//twitter.com/"];
524 foreach ($list as $listitem) {
525 if (strpos($treffer[1], $listitem) !== false) {
530 if ((strpos($treffer[1], "//twitter.com/") !== false) && (strpos($treffer[1], "/status/") !== false)) {
534 if ((strpos($treffer[1], "//plus.google.com/") !== false) && (strpos($treffer[1], "/posts") !== false)) {
538 if ((strpos($treffer[1], "//plus.google.com/") !== false) && (strpos($treffer[1], "/photos") !== false)) {
543 $urls[$treffer[1]] = $treffer[1];
550 public static function toPlaintext($html, $wraplength = 75, $compact = false)
552 $message = str_replace("\r", "", $html);
554 $doc = new DOMDocument();
555 $doc->preserveWhiteSpace = false;
557 $message = mb_convert_encoding($message, 'HTML-ENTITIES', "UTF-8");
559 @$doc->loadHTML($message);
561 $xpath = new DOMXPath($doc);
562 $list = $xpath->query("//pre");
563 foreach ($list as $node) {
564 $node->nodeValue = str_replace("\n", "\r", $node->nodeValue);
567 $message = $doc->saveHTML();
568 $message = str_replace(["\n<", ">\n", "\r", "\n", "\xC3\x82\xC2\xA0"], ["<", ">", "<br>", " ", ""], $message);
569 $message = preg_replace('= [\s]*=i', " ", $message);
571 // Collecting all links
572 $urls = self::collectURLs($message);
574 @$doc->loadHTML($message);
576 self::tagToBBCode($doc, 'html', [], '', '');
577 self::tagToBBCode($doc, 'body', [], '', '');
579 // MyBB-Auszeichnungen
581 self::node2BBCode($doc, 'span', array('style'=>'text-decoration: underline;'), '_', '_');
582 self::node2BBCode($doc, 'span', array('style'=>'font-style: italic;'), '/', '/');
583 self::node2BBCode($doc, 'span', array('style'=>'font-weight: bold;'), '*', '*');
585 self::node2BBCode($doc, 'strong', array(), '*', '*');
586 self::node2BBCode($doc, 'b', array(), '*', '*');
587 self::node2BBCode($doc, 'i', array(), '/', '/');
588 self::node2BBCode($doc, 'u', array(), '_', '_');
592 self::tagToBBCode($doc, 'blockquote', [], "»", "«");
594 self::tagToBBCode($doc, 'blockquote', [], '[quote]', "[/quote]\n");
597 self::tagToBBCode($doc, 'br', [], "\n", '');
599 self::tagToBBCode($doc, 'span', [], "", "");
600 self::tagToBBCode($doc, 'pre', [], "", "");
601 self::tagToBBCode($doc, 'div', [], "\r", "\r");
602 self::tagToBBCode($doc, 'p', [], "\n", "\n");
604 //self::node2BBCode($doc, 'ul', array(), "\n[list]", "[/list]\n");
605 //self::node2BBCode($doc, 'ol', array(), "\n[list=1]", "[/list]\n");
606 self::tagToBBCode($doc, 'li', [], "\n* ", "\n");
608 self::tagToBBCode($doc, 'hr', [], "\n" . str_repeat("-", 70) . "\n", "");
610 self::tagToBBCode($doc, 'tr', [], "\n", "");
611 self::tagToBBCode($doc, 'td', [], "\t", "");
613 self::tagToBBCode($doc, 'h1', [], "\n\n*", "*\n");
614 self::tagToBBCode($doc, 'h2', [], "\n\n*", "*\n");
615 self::tagToBBCode($doc, 'h3', [], "\n\n*", "*\n");
616 self::tagToBBCode($doc, 'h4', [], "\n\n*", "*\n");
617 self::tagToBBCode($doc, 'h5', [], "\n\n*", "*\n");
618 self::tagToBBCode($doc, 'h6', [], "\n\n*", "*\n");
620 // Problem: there is no reliable way to detect if it is a link to a tag or profile
621 //self::node2BBCode($doc, 'a', array('href'=>'/(.+)/'), ' $1 ', ' ', true);
622 //self::node2BBCode($doc, 'a', array('href'=>'/(.+)/', 'rel'=>'oembed'), ' $1 ', '', true);
623 //self::node2BBCode($doc, 'img', array('alt'=>'/(.+)/'), '$1', '');
624 //self::node2BBCode($doc, 'img', array('title'=>'/(.+)/'), '$1', '');
625 //self::node2BBCode($doc, 'img', array(), '', '');
627 self::tagToBBCode($doc, 'img', ['src' => '/(.+)/'], ' [img]$1', '[/img] ');
629 self::tagToBBCode($doc, 'img', ['src' => '/(.+)/'], ' ', ' ');
632 self::tagToBBCode($doc, 'iframe', ['src' => '/(.+)/'], ' $1 ', '');
634 $message = $doc->saveHTML();
637 $message = str_replace("[img]", "", $message);
638 $message = str_replace("[/img]", "", $message);
641 // was ersetze ich da?
642 // Irgendein stoerrisches UTF-Zeug
643 $message = str_replace(chr(194) . chr(160), ' ', $message);
645 $message = str_replace(" ", " ", $message);
647 // Aufeinanderfolgende DIVs
648 $message = preg_replace('=\r *\r=i', "\n", $message);
649 $message = str_replace("\r", "\n", $message);
651 $message = strip_tags($message);
653 $message = html_entity_decode($message, ENT_QUOTES, 'UTF-8');
655 if (!$compact && ($message != '')) {
656 foreach ($urls as $id => $url) {
657 if ($url != '' && strpos($message, $url) === false) {
658 $message .= "\n" . $url . ' ';
663 $message = str_replace("\n«", "«\n", $message);
664 $message = str_replace("»\n", "\n»", $message);
667 $oldmessage = $message;
668 $message = str_replace("\n\n\n", "\n\n", $message);
669 } while ($oldmessage != $message);
671 $message = self::quoteLevel(trim($message), $wraplength);
673 return trim($message);