3 require_once("include/oembed.php");
4 require_once("include/event.php");
5 require_once("library/markdown.php");
6 require_once("include/html2bbcode.php");
7 require_once("include/bbcode.php");
8 require_once("include/markdownify/markdownify.php");
11 function get_bb_tag_pos($s, $name, $occurance = 1) {
17 for($i = 1; $i <= $occurance; $i++) {
18 if( $start_open !== false)
19 $start_open = strpos($s, '[' . $name, $start_open + 1); // allow [name= type tags
22 if( $start_open === false)
25 $start_equal = strpos($s, '=', $start_open);
26 $start_close = strpos($s, ']', $start_open);
28 if( $start_close === false)
33 $end_open = strpos($s, '[/' . $name . ']', $start_close);
35 if( $end_open === false)
38 $res = array( 'start' => array('open' => $start_open, 'close' => $start_close),
39 'end' => array('open' => $end_open, 'close' => $end_open + strlen('[/' . $name . ']')) );
40 if( $start_equal !== false)
41 $res['start']['equal'] = $start_equal + 1;
46 function bb_tag_preg_replace($pattern, $replace, $name, $s) {
51 $pos = get_bb_tag_pos($string, $name, $occurance);
52 while($pos !== false && $occurance < 1000) {
54 $start = substr($string, 0, $pos['start']['open']);
55 $subject = substr($string, $pos['start']['open'], $pos['end']['close'] - $pos['start']['open']);
56 $end = substr($string, $pos['end']['close']);
60 $subject = preg_replace($pattern, $replace, $subject);
61 $string = $start . $subject . $end;
64 $pos = get_bb_tag_pos($string, $name, $occurance);
70 // we don't want to support a bbcode specific markdown interpreter
71 // and the markdown library we have is pretty good, but provides HTML output.
72 // So we'll use that to convert to HTML, then convert the HTML back to bbcode,
73 // and then clean up a few Diaspora specific constructs.
75 function diaspora2bb($s) {
77 // for testing purposes: Collect raw markdown articles
78 // $file = tempnam("/tmp/friendica/", "markdown");
79 // file_put_contents($file, $s);
81 $s = html_entity_decode($s,ENT_COMPAT,'UTF-8');
83 // Too many new lines. So deactivated the following line
84 // $s = str_replace("\r","\n",$s);
86 $s = str_replace("\r","",$s);
88 // <br/> is invalid. Replace it with the valid expression
89 $s = str_replace("<br/>","<br />",$s);
91 $s = preg_replace('/\@\{(.+?)\; (.+?)\@(.+?)\}/','@[url=https://$3/u/$2]$1[/url]',$s);
93 // Escaping the hash tags - doesn't always seem to work
94 // $s = preg_replace('/\#([^\s\#])/','\\#$1',$s);
96 $s = preg_replace('/\#([^\s\#])/','#$1',$s);
100 $s = str_replace('#','#',$s);
101 // we seem to have double linebreaks
102 // $s = str_replace("\n",'<br />',$s);
104 $s = html2bbcode($s);
105 // $s = str_replace('*','*',$s);
107 // protect the recycle symbol from turning into a tag, but without unescaping angles and naked ampersands
108 $s = str_replace('♲',html_entity_decode('♲',ENT_QUOTES,'UTF-8'),$s);
110 // Convert everything that looks like a link to a link
111 $s = preg_replace("/([^\]\=]|^)(https?\:\/\/)([a-zA-Z0-9\:\/\-\?\&\;\.\=\_\~\#\%\$\!\+\,]+)/ism", '$1[url=$2$3]$2$3[/url]',$s);
113 //$s = preg_replace("/([^\]\=]|^)(https?\:\/\/)(vimeo|youtu|www\.youtube|soundcloud)([a-zA-Z0-9\:\/\-\?\&\;\.\=\_\~\#\%\$\!\+\,]+)/ism", '$1[url=$2$3$4]$2$3$4[/url]',$s);
114 $s = bb_tag_preg_replace("/\[url\=?(.*?)\]https?:\/\/www.youtube.com\/watch\?v\=(.*?)\[\/url\]/ism",'[youtube]$2[/youtube]','url',$s);
115 $s = bb_tag_preg_replace("/\[url\=https?:\/\/www.youtube.com\/watch\?v\=(.*?)\].*?\[\/url\]/ism",'[youtube]$1[/youtube]','url',$s);
116 $s = bb_tag_preg_replace("/\[url\=?(.*?)\]https?:\/ \/vimeo.com\/([0-9]+)(.*?)\[\/url\]/ism",'[vimeo]$2[/vimeo]','url',$s);
117 $s = bb_tag_preg_replace("/\[url\=https?:\/\/vimeo.com\/([0-9]+)\](.*?)\[\/url\]/ism",'[vimeo]$1[/vimeo]','url',$s);
118 // remove duplicate adjacent code tags
119 $s = preg_replace("/(\[code\])+(.*?)(\[\/code\])+/ism","[code]$2[/code]", $s);
121 // Don't show link to full picture (until it is fixed)
122 $s = scale_external_images($s, false);
128 function stripdcode_br_cb($s) {
129 return '[code]' . str_replace('<br />', "\n\t", $s[1]) . '[/code]';
133 //////////////////////
134 // The following "diaspora_ul" and "diaspora_ol" are only appropriate for the
135 // pre-Markdownify conversion. If Markdownify isn't used, use the non-Markdownify
137 //////////////////////
139 function diaspora_ul($s) {
140 // Replace "[*]" followed by any number (including zero) of
141 // spaces by "* " to match Diaspora's list format
142 if( strpos($s[0], "[list]") === 0 )
143 return '<ul class="listbullet" style="list-style-type: circle;">' . preg_replace("/\[\*\]( *)/", "* ", $s[1]) . '</ul>';
144 elseif( strpos($s[0], "[ul]") === 0 )
145 return '<ul class="listbullet" style="list-style-type: circle;">' . preg_replace("/\[\*\]( *)/", "* ", $s[1]) . '</ul>';
151 function diaspora_ol($s) {
152 // A hack: Diaspora will create a properly-numbered ordered list even
153 // if you use '1.' for each element of the list, like:
157 if( strpos($s[0], "[list=1]") === 0 )
158 return '<ul class="listdecimal" style="list-style-type: decimal;">' . preg_replace("/\[\*\]( *)/", "1. ", $s[1]) . '</ul>';
159 elseif( strpos($s[0], "[list=i]") === 0 )
160 return '<ul class="listlowerroman" style="list-style-type: lower-roman;">' . preg_replace("/\[\*\]( *)/", "1. ", $s[1]) . '</ul>';
161 elseif( strpos($s[0], "[list=I]") === 0 )
162 return '<ul class="listupperroman" style="list-style-type: upper-roman;">' . preg_replace("/\[\*\]( *)/", "1. ", $s[1]) . '</ul>';
163 elseif( strpos($s[0], "[list=a]") === 0 )
164 return '<ul class="listloweralpha" style="list-style-type: lower-alpha;">' . preg_replace("/\[\*\]( *)/", "1. ", $s[1]) . '</ul>';
165 elseif( strpos($s[0], "[list=A]") === 0 )
166 return '<ul class="listupperalpha" style="list-style-type: upper-alpha;">' . preg_replace("/\[\*\]( *)/", "1. ", $s[1]) . '</ul>';
167 elseif( strpos($s[0], "[ol]") === 0 )
168 return '<ul class="listdecimal" style="list-style-type: decimal;">' . preg_replace("/\[\*\]( *)/", "1. ", $s[1]) . '</ul>';
174 //////////////////////
175 // Non-Markdownify versions of "diaspora_ol" and "diaspora_ul"
176 //////////////////////
177 function diaspora_ul($s) {
178 // Replace "[\\*]" followed by any number (including zero) of
179 // spaces by "* " to match Diaspora's list format
180 return preg_replace("/\[\\\\\*\]( *)/", "* ", $s[1]);
183 function diaspora_ol($s) {
184 // A hack: Diaspora will create a properly-numbered ordered list even
185 // if you use '1.' for each element of the list, like:
189 return preg_replace("/\[\\\\\*\]( *)/", "1. ", $s[1]);
193 function bb2diaspora($Text,$preserve_nl = false, $fordiaspora = true) {
195 // Re-enabling the converter again.
196 // The bbcode parser now handles youtube-links (and the other stuff) correctly.
197 // Additionally the html code is now fixed so that lists are now working.
200 * Transform #tags, strip off the [url] and replace spaces with underscore
202 $Text = preg_replace_callback('/#\[url\=(\w+.*?)\](\w+.*?)\[\/url\]/i', create_function('$match',
203 'return \'#\'. str_replace(\' \', \'_\', $match[2]);'
207 // Converting images with size parameters to simple images. Markdown doesn't know it.
208 $Text = preg_replace("/\[img\=([0-9]*)x([0-9]*)\](.*?)\[\/img\]/ism", '[img]$3[/img]', $Text);
210 // the following was added on 10-January-2012 due to an inability of Diaspora's
211 // new javascript markdown processor to handle links with images as the link "text"
212 // It is not optimal and may be removed if this ability is restored in the future
214 // $Text = preg_replace("/\[url\=([^\[\]]*)\]\s*\[img\](.*?)\[\/img\]\s*\[\/url\]/ism",
215 // "[url]$1[/url]\n[img]$2[/img]", $Text);
217 // Convert it to HTML - don't try oembed
218 $Text = bbcode($Text, $preserve_nl, false);
220 // Now convert HTML to Markdown
221 $md = new Markdownify(false, false, false);
222 $Text = $md->parseString($Text);
224 // If the text going into bbcode() has a plain URL in it, i.e.
225 // with no [url] tags around it, it will come out of parseString()
226 // looking like: <http://url.com>, which gets removed by strip_tags().
227 // So take off the angle brackets of any such URL
228 $Text = preg_replace("/<http(.*?)>/is", "http$1", $Text);
230 // Remove all unconverted tags
231 $Text = strip_tags($Text);
236 $ev = bbtoevent($Text);
238 // Replace any html brackets with HTML Entities to prevent executing HTML or script
239 // Don't use strip_tags here because it breaks [url] search by replacing & with amp
241 $Text = str_replace("<", "<", $Text);
242 $Text = str_replace(">", ">", $Text);
244 // If we find any event code, turn it into an event.
245 // After we're finished processing the bbcode we'll
246 // replace all of the event code with a reformatted version.
249 $Text = str_replace(array("\n","\r"), array('',''),$Text);
251 // Remove the "return" character, as Diaspora uses only the "newline"
252 // character, so having the "return" character can cause signature
254 $Text = str_replace("\r", "", $Text);
257 // Set up the parameters for a URL search string
258 $URLSearchString = "^\[\]";
259 // Set up the parameters for a MAIL search string
260 $MAILSearchString = $URLSearchString;
262 // Perform URL Search
264 // [img]pathtoimage[/img]
266 // the following was added on 10-January-2012 due to an inability of Diaspora's
267 // new javascript markdown processor to handle links with images as the link "text"
268 // It is not optimal and may be removed if this ability is restored in the future
270 $Text = preg_replace("/\[url\=([$URLSearchString]*)\]\[img\](.*?)\[\/img\]\[\/url\]/ism",
271 '![' . t('image/photo') . '](' . '$2' . ')' . "\n" . '[' . t('link') . '](' . '$1' . ')', $Text);
273 $Text = preg_replace("/\[bookmark\]([$URLSearchString]*)\[\/bookmark\]/ism", '[$1]($1)', $Text);
274 $Text = preg_replace("/\[bookmark\=([$URLSearchString]*)\](.*?)\[\/bookmark\]/ism", '[$2]($1)', $Text);
276 $Text = preg_replace("/\[url\]([$URLSearchString]*)\[\/url\]/ism", '[$1]($1)', $Text);
277 $Text = preg_replace("/\#\[url\=([$URLSearchString]*)\](.*?)\[\/url\]/ism", '[#$2]($1)', $Text);
278 $Text = preg_replace("/\[url\=([$URLSearchString]*)\](.*?)\[\/url\]/ism", '[$2]($1)', $Text);
281 $Text = preg_replace("/\[img\](.*?)\[\/img\]/", '![' . t('image/photo') . '](' . '$1' . ')', $Text);
282 $Text = preg_replace("/\[img\=(.*?)\](.*?)\[\/img\]/", '![' . t('image/photo') . '](' . '$2' . ')', $Text);
284 // Perform MAIL Search
285 $Text = preg_replace("(\[mail\]([$MAILSearchString]*)\[/mail\])", '[$1](mailto:$1)', $Text);
286 $Text = preg_replace("/\[mail\=([$MAILSearchString]*)\](.*?)\[\/mail\]/", '[$2](mailto:$1)', $Text);
288 $Text = str_replace('*', '\\*', $Text);
289 $Text = str_replace('_', '\\_', $Text);
291 $Text = str_replace('`','\\`', $Text);
293 // Check for bold text
294 $Text = preg_replace("(\[b\](.*?)\[\/b\])is",'**$1**',$Text);
296 // Check for italics text
297 $Text = preg_replace("(\[i\](.*?)\[\/i\])is",'_$1_',$Text);
299 // Check for underline text
300 // Replace with italics since Diaspora doesn't have underline
301 $Text = preg_replace("(\[u\](.*?)\[\/u\])is",'_$1_',$Text);
303 // Check for strike-through text
304 $Text = preg_replace("(\[s\](.*?)\[\/s\])is",'**[strike]**$1**[/strike]**',$Text);
306 // Check for over-line text
307 // $Text = preg_replace("(\[o\](.*?)\[\/o\])is",'<span class="overline">$1</span>',$Text);
309 // Check for colored text
310 // Remove color since Diaspora doesn't support it
311 $Text = preg_replace("(\[color=(.*?)\](.*?)\[\/color\])is","$2",$Text);
313 // Check for sized text
314 // Remove it since Diaspora doesn't support sizes very well
315 $Text = preg_replace("(\[size=(.*?)\](.*?)\[\/size\])is","$2",$Text);
317 // Check for list text
319 while ((((strpos($Text, "[/list]") !== false) && (strpos($Text, "[list") !== false)) ||
320 ((strpos($Text, "[/ol]") !== false) && (strpos($Text, "[ol]") !== false)) ||
321 ((strpos($Text, "[/ul]") !== false) && (strpos($Text, "[ul]") !== false)) ||
322 ((strpos($Text, "[/li]") !== false) && (strpos($Text, "[li]") !== false))) && (++$endlessloop < 20)) {
323 $Text = preg_replace_callback("/\[list\](.*?)\[\/list\]/is", 'diaspora_ul', $Text);
324 $Text = preg_replace_callback("/\[list=1\](.*?)\[\/list\]/is", 'diaspora_ol', $Text);
325 $Text = preg_replace_callback("/\[list=i\](.*?)\[\/list\]/s",'diaspora_ol', $Text);
326 $Text = preg_replace_callback("/\[list=I\](.*?)\[\/list\]/s", 'diaspora_ol', $Text);
327 $Text = preg_replace_callback("/\[list=a\](.*?)\[\/list\]/s", 'diaspora_ol', $Text);
328 $Text = preg_replace_callback("/\[list=A\](.*?)\[\/list\]/s", 'diaspora_ol', $Text);
329 $Text = preg_replace_callback("/\[ul\](.*?)\[\/ul\]/is", 'diaspora_ul', $Text);
330 $Text = preg_replace_callback("/\[ol\](.*?)\[\/ol\]/is", 'diaspora_ol', $Text);
331 $Text = preg_replace("/\[li\]( *)(.*?)\[\/li\]/s", '* $2' ,$Text);
334 // Just get rid of table tags since Diaspora doesn't support tables
335 $Text = preg_replace("/\[th\](.*?)\[\/th\]/s", '$1' ,$Text);
336 $Text = preg_replace("/\[td\](.*?)\[\/td\]/s", '$1' ,$Text);
337 $Text = preg_replace("/\[tr\](.*?)\[\/tr\]/s", '$1' ,$Text);
338 $Text = preg_replace("/\[table\](.*?)\[\/table\]/s", '$1' ,$Text);
340 $Text = preg_replace("/\[table border=(.*?)\](.*?)\[\/table\]/s", '$2' ,$Text);
341 // $Text = preg_replace("/\[table border=0\](.*?)\[\/table\]/s", '<table border="0" >$1</table>' ,$Text);
344 // $Text = str_replace("[*]", "<li>", $Text);
346 // Check for font change text
347 // $Text = preg_replace("(\[font=(.*?)\](.*?)\[\/font\])","<span style=\"font-family: $1;\">$2</span>",$Text);
350 $Text = preg_replace_callback("/\[code\](.*?)\[\/code\]/is",'stripdcode_br_cb',$Text);
352 // Check for [code] text
353 $Text = preg_replace("/(\[code\])+(.*?)(\[\/code\])+/is","\t$2\n", $Text);
358 // Declare the format for [quote] layout
359 // $QuoteLayout = '<blockquote>$1</blockquote>';
360 // Check for [quote] text
361 $Text = preg_replace("/\[quote\](.*?)\[\/quote\]/is",">$1\n\n", $Text);
362 $Text = preg_replace("/\[quote=(.*?)\](.*?)\[\/quote\]/is",">$2\n\n", $Text);
366 // html5 video and audio
368 $Text = preg_replace("/\[video\](.*?)\[\/video\]/", '$1', $Text);
370 $Text = preg_replace("/\[audio\](.*?)\[\/audio\]/", '$1', $Text);
372 // $Text = preg_replace("/\[iframe\](.*?)\[\/iframe\]/", '<iframe src="$1" width="425" height="350"><a href="$1">$1</a></iframe>', $Text);
374 // [img=widthxheight]image source[/img]
375 // $Text = preg_replace("/\[img\=([0-9]*)x([0-9]*)\](.*?)\[\/img\]/", '<img src="$3" style="height:{$2}px; width:{$1}px;" >', $Text);
377 $Text = preg_replace("/\[youtube\]https?:\/\/www.youtube.com\/watch\?v\=(.*?)\[\/youtube\]/ism",'http://www.youtube.com/watch?v=$1',$Text);
378 $Text = preg_replace("/\[youtube\]https?:\/\/www.youtube.com\/embed\/(.*?)\[\/youtube\]/ism",'http://www.youtube.com/watch?v=$1',$Text);
379 $Text = preg_replace("/\[youtube\]https?:\/\/youtu.be\/(.*?)\[\/youtube\]/ism",'http://www.youtube.com/watch?v=$1',$Text);
380 $Text = preg_replace("/\[youtube\]([A-Za-z0-9\-_=]+)(.*?)\[\/youtube\]/ism", 'http://www.youtube.com/watch?v=$1', $Text);
382 $Text = preg_replace("/\[vimeo\]https?:\/\/player.vimeo.com\/video\/([0-9]+)(.*?)\[\/vimeo\]/ism",'http://vimeo.com/$1',$Text);
383 $Text = preg_replace("/\[vimeo\]https?:\/\/vimeo.com\/([0-9]+)(.*?)\[\/vimeo\]/ism",'http://vimeo.com/$1',$Text);
384 $Text = preg_replace("/\[vimeo\]([0-9]+)(.*?)\[\/vimeo\]/ism", 'http://vimeo.com/$1',$Text);
387 $Text = str_replace('[nosmile]','',$Text);
390 // $Text = oembed_bbcode2html($Text);
392 // If we found an event earlier, strip out all the event code and replace with a reformatted version.
396 $sub = format_event_diaspora($ev);
398 $Text = preg_replace("/\[event\-summary\](.*?)\[\/event\-summary\]/is",'',$Text);
399 $Text = preg_replace("/\[event\-description\](.*?)\[\/event\-description\]/is",'',$Text);
400 $Text = preg_replace("/\[event\-start\](.*?)\[\/event\-start\]/is",$sub,$Text);
401 $Text = preg_replace("/\[event\-finish\](.*?)\[\/event\-finish\]/is",'',$Text);
402 $Text = preg_replace("/\[event\-location\](.*?)\[\/event\-location\]/is",'',$Text);
403 $Text = preg_replace("/\[event\-adjust\](.*?)\[\/event\-adjust\]/is",'',$Text);
406 $Text = preg_replace("/\<(.*?)(src|href)=(.*?)\&\;(.*?)\>/ism",'<$1$2=$3&$4>',$Text);
408 $Text = preg_replace_callback('/\[(.*?)\]\((.*?)\)/ism','unescape_underscores_in_links',$Text);
412 // Remove any leading or trailing whitespace, as this will mess up
413 // the Diaspora signature verification and cause the item to disappear
416 call_hooks('bb2diaspora',$Text);
421 function unescape_underscores_in_links($m) {
422 $y = str_replace('\\_','_', $m[2]);
423 return('[' . $m[1] . '](' . $y . ')');
426 function format_event_diaspora($ev) {
430 if(! ((is_array($ev)) && count($ev)))
433 $bd_format = t('l F d, Y \@ g:i A') ; // Friday January 18, 2011 @ 8 AM
435 $o = 'Friendica event notification:' . "\n";
437 $o .= '**' . (($ev['summary']) ? bb2diaspora($ev['summary']) : bb2diaspora($ev['desc'])) . '**' . "\n";
439 $o .= t('Starts:') . ' ' . '['
440 . (($ev['adjust']) ? day_translate(datetime_convert('UTC', 'UTC',
441 $ev['start'] , $bd_format ))
442 : day_translate(datetime_convert('UTC', 'UTC',
443 $ev['start'] , $bd_format)))
444 . '](' . $a->get_baseurl() . '/localtime/?f=&time=' . urlencode(datetime_convert('UTC','UTC',$ev['start'])) . ")\n";
446 if(! $ev['nofinish'])
447 $o .= t('Finishes:') . ' ' . '['
448 . (($ev['adjust']) ? day_translate(datetime_convert('UTC', 'UTC',
449 $ev['finish'] , $bd_format ))
450 : day_translate(datetime_convert('UTC', 'UTC',
451 $ev['finish'] , $bd_format )))
452 . '](' . $a->get_baseurl() . '/localtime/?f=&time=' . urlencode(datetime_convert('UTC','UTC',$ev['finish'])) . ")\n";
454 if(strlen($ev['location']))
455 $o .= t('Location:') . bb2diaspora($ev['location'])