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");
10 // we don't want to support a bbcode specific markdown interpreter
11 // and the markdown library we have is pretty good, but provides HTML output.
12 // So we'll use that to convert to HTML, then convert the HTML back to bbcode,
13 // and then clean up a few Diaspora specific constructs.
15 function diaspora2bb($s) {
17 // for testing purposes: Collect raw markdown articles
18 // $file = tempnam("/tmp/friendica/", "markdown");
19 // file_put_contents($file, $s);
21 $s = html_entity_decode($s,ENT_COMPAT,'UTF-8');
23 // Too many new lines. So deactivated the following line
24 // $s = str_replace("\r","\n",$s);
26 $s = str_replace("\r","",$s);
28 // <br/> is invalid. Replace it with the valid expression
29 $s = str_replace("<br/>","<br />",$s);
31 $s = preg_replace('/\@\{(.+?)\; (.+?)\@(.+?)\}/','@[url=https://$3/u/$2]$1[/url]',$s);
33 // Escaping the hash tags - doesn't always seem to work
34 // $s = preg_replace('/\#([^\s\#])/','\\#$1',$s);
36 $s = preg_replace('/\#([^\s\#])/','#$1',$s);
40 $s = str_replace('#','#',$s);
41 // we seem to have double linebreaks
42 // $s = str_replace("\n",'<br />',$s);
45 // $s = str_replace('*','*',$s);
47 // Convert everything that looks like a link to a link
48 $s = preg_replace("/([^\]\=]|^)(https?\:\/\/)([a-zA-Z0-9\:\/\-\?\&\;\.\=\_\~\#\%\$\!\+\,]+)/ism", '$1[url=$2$3]$2$3[/url]',$s);
50 //$s = preg_replace("/([^\]\=]|^)(https?\:\/\/)(vimeo|youtu|www\.youtube|soundcloud)([a-zA-Z0-9\:\/\-\?\&\;\.\=\_\~\#\%\$\!\+\,]+)/ism", '$1[url=$2$3$4]$2$3$4[/url]',$s);
51 $s = preg_replace("/\[url\=?(.*?)\]https?:\/\/www.youtube.com\/watch\?v\=(.*?)\[\/url\]/ism",'[youtube]$2[/youtube]',$s);
52 $s = preg_replace("/\[url\=https?:\/\/www.youtube.com\/watch\?v\=(.*?)\].*?\[\/url\]/ism",'[youtube]$1[/youtube]',$s);
53 $s = preg_replace("/\[url\=?(.*?)\]https?:\/\/vimeo.com\/([0-9]+)(.*?)\[\/url\]/ism",'[vimeo]$2[/vimeo]',$s);
54 $s = preg_replace("/\[url\=https?:\/\/vimeo.com\/([0-9]+)\](.*?)\[\/url\]/ism",'[vimeo]$1[/vimeo]',$s);
55 // remove duplicate adjacent code tags
56 $s = preg_replace("/(\[code\])+(.*?)(\[\/code\])+/ism","[code]$2[/code]", $s);
58 // Don't show link to full picture (until it is fixed)
59 $s = scale_external_images($s, false);
65 function stripdcode_br_cb($s) {
66 return '[code]' . str_replace('<br />', "\n\t", $s[1]) . '[/code]';
70 function diaspora_ul($s) {
71 // Replace "[*]" followed by any number (including zero) of
72 // spaces by "* " to match Diaspora's list format
73 if( strpos($s[0], "[list]") === 0 )
74 return '<ul class="listbullet" style="list-style-type: circle;">' . preg_replace("/\[\*\]( *)/", "* ", $s[1]) . '</ul>';
75 elseif( strpos($s[0], "[ul]") === 0 )
76 return '<ul class="listbullet" style="list-style-type: circle;">' . preg_replace("/\[\*\]( *)/", "* ", $s[1]) . '</ul>';
82 function diaspora_ol($s) {
83 // A hack: Diaspora will create a properly-numbered ordered list even
84 // if you use '1.' for each element of the list, like:
88 if( strpos($s[0], "[list=1]") === 0 )
89 return '<ul class="listdecimal" style="list-style-type: decimal;">' . preg_replace("/\[\*\]( *)/", "1. ", $s[1]) . '</ul>';
90 elseif( strpos($s[0], "[list=i]") === 0 )
91 return '<ul class="listlowerroman" style="list-style-type: lower-roman;">' . preg_replace("/\[\*\]( *)/", "1. ", $s[1]) . '</ul>';
92 elseif( strpos($s[0], "[list=I]") === 0 )
93 return '<ul class="listupperroman" style="list-style-type: upper-roman;">' . preg_replace("/\[\*\]( *)/", "1. ", $s[1]) . '</ul>';
94 elseif( strpos($s[0], "[list=a]") === 0 )
95 return '<ul class="listloweralpha" style="list-style-type: lower-alpha;">' . preg_replace("/\[\*\]( *)/", "1. ", $s[1]) . '</ul>';
96 elseif( strpos($s[0], "[list=A]") === 0 )
97 return '<ul class="listupperalpha" style="list-style-type: upper-alpha;">' . preg_replace("/\[\*\]( *)/", "1. ", $s[1]) . '</ul>';
98 elseif( strpos($s[0], "[ol]") === 0 )
99 return '<ul class="listdecimal" style="list-style-type: decimal;">' . preg_replace("/\[\*\]( *)/", "1. ", $s[1]) . '</ul>';
105 function bb2diaspora($Text,$preserve_nl = false) {
107 // bbcode() will convert "[*]" into "<li>" with no closing "</li>"
108 // Markdownify() is unable to handle these, as it makes each new
109 // "<li>" into a deeper nested element until it crashes. So pre-format
110 // the lists as Diaspora lists before sending the $Text to bbcode()
112 // Note that to get nested lists to work for Diaspora, we would need
113 // to define the closing tag for the list elements. So nested lists
114 // are going to be flattened out in Diaspora for now
116 while ((((strpos($Text, "[/list]") !== false) && (strpos($Text, "[list") !== false)) ||
117 ((strpos($Text, "[/ol]") !== false) && (strpos($Text, "[ol]") !== false)) ||
118 ((strpos($Text, "[/ul]") !== false) && (strpos($Text, "[ul]") !== false))) && (++$endlessloop < 20)) {
119 $Text = preg_replace_callback("/\[list\](.*?)\[\/list\]/is", 'diaspora_ul', $Text);
120 $Text = preg_replace_callback("/\[list=1\](.*?)\[\/list\]/is", 'diaspora_ol', $Text);
121 $Text = preg_replace_callback("/\[list=i\](.*?)\[\/list\]/s",'diaspora_ol', $Text);
122 $Text = preg_replace_callback("/\[list=I\](.*?)\[\/list\]/s", 'diaspora_ol', $Text);
123 $Text = preg_replace_callback("/\[list=a\](.*?)\[\/list\]/s", 'diaspora_ol', $Text);
124 $Text = preg_replace_callback("/\[list=A\](.*?)\[\/list\]/s", 'diaspora_ol', $Text);
125 $Text = preg_replace_callback("/\[ul\](.*?)\[\/ul\]/is", 'diaspora_ul', $Text);
126 $Text = preg_replace_callback("/\[ol\](.*?)\[\/ol\]/is", 'diaspora_ol', $Text);
129 // Convert it to HTML - don't try oembed
130 $Text = bbcode($Text, $preserve_nl, false);
132 // Now convert HTML to Markdown
133 $md = new Markdownify(false, false, false);
134 $Text = $md->parseString($Text);
136 // If the text going into bbcode() has a plain URL in it, i.e.
137 // with no [url] tags around it, it will come out of parseString()
138 // looking like: <http://url.com>, which gets removed by strip_tags().
139 // So take off the angle brackets of any such URL
140 $Text = preg_replace("/<http(.*?)>/is", "http$1", $Text);
142 // Remove all unconverted tags
143 $Text = strip_tags($Text);
146 $ev = bbtoevent($Text);
148 // Replace any html brackets with HTML Entities to prevent executing HTML or script
149 // Don't use strip_tags here because it breaks [url] search by replacing & with amp
151 $Text = str_replace("<", "<", $Text);
152 $Text = str_replace(">", ">", $Text);
154 // If we find any event code, turn it into an event.
155 // After we're finished processing the bbcode we'll
156 // replace all of the event code with a reformatted version.
159 $Text = str_replace(array("\n","\r"), array('',''),$Text);
161 // Remove the "return" character, as Diaspora uses only the "newline"
162 // character, so having the "return" character can cause signature
164 $Text = str_replace("\r", "", $Text);
167 // Set up the parameters for a URL search string
168 $URLSearchString = "^\[\]";
169 // Set up the parameters for a MAIL search string
170 $MAILSearchString = $URLSearchString;
172 // Perform URL Search
174 // [img]pathtoimage[/img]
176 // the following was added on 10-January-2012 due to an inability of Diaspora's
177 // new javascript markdown processor to handle links with images as the link "text"
178 // It is not optimal and may be removed if this ability is restored in the future
180 $Text = preg_replace("/\[url\=([$URLSearchString]*)\]\[img\](.*?)\[\/img\]\[\/url\]/ism",
181 '![' . t('image/photo') . '](' . '$2' . ')' . "\n" . '[' . t('link') . '](' . '$1' . ')', $Text);
183 $Text = preg_replace("/\[bookmark\]([$URLSearchString]*)\[\/bookmark\]/ism", '[$1]($1)', $Text);
184 $Text = preg_replace("/\[bookmark\=([$URLSearchString]*)\](.*?)\[\/bookmark\]/ism", '[$2]($1)', $Text);
186 $Text = preg_replace("/\[url\]([$URLSearchString]*)\[\/url\]/ism", '[$1]($1)', $Text);
187 $Text = preg_replace("/\#\[url\=([$URLSearchString]*)\](.*?)\[\/url\]/ism", '[#$2]($1)', $Text);
188 $Text = preg_replace("/\[url\=([$URLSearchString]*)\](.*?)\[\/url\]/ism", '[$2]($1)', $Text);
191 $Text = preg_replace("/\[img\](.*?)\[\/img\]/", '![' . t('image/photo') . '](' . '$1' . ')', $Text);
192 $Text = preg_replace("/\[img\=(.*?)\](.*?)\[\/img\]/", '![' . t('image/photo') . '](' . '$2' . ')', $Text);
194 // Perform MAIL Search
195 $Text = preg_replace("(\[mail\]([$MAILSearchString]*)\[/mail\])", '[$1](mailto:$1)', $Text);
196 $Text = preg_replace("/\[mail\=([$MAILSearchString]*)\](.*?)\[\/mail\]/", '[$2](mailto:$1)', $Text);
198 $Text = str_replace('*', '\\*', $Text);
199 $Text = str_replace('_', '\\_', $Text);
201 $Text = str_replace('`','\\`', $Text);
203 // Check for bold text
204 $Text = preg_replace("(\[b\](.*?)\[\/b\])is",'**$1**',$Text);
206 // Check for italics text
207 $Text = preg_replace("(\[i\](.*?)\[\/i\])is",'_$1_',$Text);
209 // Check for underline text
210 // Replace with italics since Diaspora doesn't have underline
211 $Text = preg_replace("(\[u\](.*?)\[\/u\])is",'_$1_',$Text);
213 // Check for strike-through text
214 $Text = preg_replace("(\[s\](.*?)\[\/s\])is",'**[strike]**$1**[/strike]**',$Text);
216 // Check for over-line text
217 // $Text = preg_replace("(\[o\](.*?)\[\/o\])is",'<span class="overline">$1</span>',$Text);
219 // Check for colored text
220 // Remove color since Diaspora doesn't support it
221 $Text = preg_replace("(\[color=(.*?)\](.*?)\[\/color\])is","$2",$Text);
223 // Check for sized text
224 // Remove it since Diaspora doesn't support sizes very well
225 $Text = preg_replace("(\[size=(.*?)\](.*?)\[\/size\])is","$2",$Text);
227 // Check for list text
228 $Text = preg_replace_callback("/\[list\](.*?)\[\/list\]/is", 'diaspora_ul', $Text);
229 $Text = preg_replace_callback("/\[ul\](.*?)\[\/ul\]/is", 'diaspora_ul', $Text);
230 $Text = preg_replace_callback("/\[list=1\](.*?)\[\/list\]/is", 'diaspora_ol', $Text);
231 $Text = preg_replace_callback("/\[list=i\](.*?)\[\/list\]/s",'diaspora_ol', $Text);
232 $Text = preg_replace_callback("/\[list=I\](.*?)\[\/list\]/s", 'diaspora_ol', $Text);
233 $Text = preg_replace_callback("/\[list=a\](.*?)\[\/list\]/s", 'diaspora_ol', $Text);
234 $Text = preg_replace_callback("/\[list=A\](.*?)\[\/list\]/s", 'diaspora_ol', $Text);
235 $Text = preg_replace_callback("/\[ol\](.*?)\[\/ol\]/is", 'diaspora_ol', $Text);
236 // $Text = preg_replace("/\[li\](.*?)\[\/li\]/s", '<li>$1</li>' ,$Text);
238 // Just get rid of table tags since Diaspora doesn't support tables
239 $Text = preg_replace("/\[th\](.*?)\[\/th\]/s", '$1' ,$Text);
240 $Text = preg_replace("/\[td\](.*?)\[\/td\]/s", '$1' ,$Text);
241 $Text = preg_replace("/\[tr\](.*?)\[\/tr\]/s", '$1' ,$Text);
242 $Text = preg_replace("/\[table\](.*?)\[\/table\]/s", '$1' ,$Text);
244 $Text = preg_replace("/\[table border=(.*?)\](.*?)\[\/table\]/s", '$2' ,$Text);
245 // $Text = preg_replace("/\[table border=0\](.*?)\[\/table\]/s", '<table border="0" >$1</table>' ,$Text);
248 // $Text = str_replace("[*]", "<li>", $Text);
250 // Check for font change text
251 // $Text = preg_replace("(\[font=(.*?)\](.*?)\[\/font\])","<span style=\"font-family: $1;\">$2</span>",$Text);
254 $Text = preg_replace_callback("/\[code\](.*?)\[\/code\]/is",'stripdcode_br_cb',$Text);
256 // Check for [code] text
257 $Text = preg_replace("/(\[code\])+(.*?)(\[\/code\])+/is","\t$2\n", $Text);
262 // Declare the format for [quote] layout
263 // $QuoteLayout = '<blockquote>$1</blockquote>';
264 // Check for [quote] text
265 $Text = preg_replace("/\[quote\](.*?)\[\/quote\]/is",">$1\n\n", $Text);
266 $Text = preg_replace("/\[quote=(.*?)\](.*?)\[\/quote\]/is",">$2\n\n", $Text);
270 // html5 video and audio
272 $Text = preg_replace("/\[video\](.*?)\[\/video\]/", '$1', $Text);
274 $Text = preg_replace("/\[audio\](.*?)\[\/audio\]/", '$1', $Text);
276 // $Text = preg_replace("/\[iframe\](.*?)\[\/iframe\]/", '<iframe src="$1" width="425" height="350"><a href="$1">$1</a></iframe>', $Text);
278 // [img=widthxheight]image source[/img]
279 // $Text = preg_replace("/\[img\=([0-9]*)x([0-9]*)\](.*?)\[\/img\]/", '<img src="$3" style="height:{$2}px; width:{$1}px;" >', $Text);
281 $Text = preg_replace("/\[youtube\]https?:\/\/www.youtube.com\/watch\?v\=(.*?)\[\/youtube\]/ism",'http://www.youtube.com/watch?v=$1',$Text);
282 $Text = preg_replace("/\[youtube\]https?:\/\/www.youtube.com\/embed\/(.*?)\[\/youtube\]/ism",'http://www.youtube.com/watch?v=$1',$Text);
283 $Text = preg_replace("/\[youtube\]https?:\/\/youtu.be\/(.*?)\[\/youtube\]/ism",'http://www.youtube.com/watch?v=$1',$Text);
284 $Text = preg_replace("/\[youtube\]([A-Za-z0-9\-_=]+)(.*?)\[\/youtube\]/ism", 'http://www.youtube.com/watch?v=$1', $Text);
286 $Text = preg_replace("/\[vimeo\]https?:\/\/player.vimeo.com\/video\/([0-9]+)(.*?)\[\/vimeo\]/ism",'http://vimeo.com/$1',$Text);
287 $Text = preg_replace("/\[vimeo\]https?:\/\/vimeo.com\/([0-9]+)(.*?)\[\/vimeo\]/ism",'http://vimeo.com/$1',$Text);
288 $Text = preg_replace("/\[vimeo\]([0-9]+)(.*?)\[\/vimeo\]/ism", 'http://vimeo.com/$1',$Text);
291 $Text = str_replace('[nosmile]','',$Text);
294 // $Text = oembed_bbcode2html($Text);
296 // If we found an event earlier, strip out all the event code and replace with a reformatted version.
298 if(x($ev,'desc') && x($ev,'start')) {
300 $sub = format_event_diaspora($ev);
302 $Text = preg_replace("/\[event\-description\](.*?)\[\/event\-description\]/is",$sub,$Text);
303 $Text = preg_replace("/\[event\-start\](.*?)\[\/event\-start\]/is",'',$Text);
304 $Text = preg_replace("/\[event\-finish\](.*?)\[\/event\-finish\]/is",'',$Text);
305 $Text = preg_replace("/\[event\-location\](.*?)\[\/event\-location\]/is",'',$Text);
306 $Text = preg_replace("/\[event\-adjust\](.*?)\[\/event\-adjust\]/is",'',$Text);
309 $Text = preg_replace("/\<(.*?)(src|href)=(.*?)\&\;(.*?)\>/ism",'<$1$2=$3&$4>',$Text);
311 $Text = preg_replace_callback('/\[(.*?)\]\((.*?)\)/ism','unescape_underscores_in_links',$Text);
314 // Remove any leading or trailing whitespace, as this will mess up
315 // the Diaspora signature verification and cause the item to disappear
318 call_hooks('bb2diaspora',$Text);
323 function unescape_underscores_in_links($m) {
324 $y = str_replace('\\_','_', $m[2]);
325 return('[' . $m[1] . '](' . $y . ')');
328 function format_event_diaspora($ev) {
332 if(! ((is_array($ev)) && count($ev)))
335 $bd_format = t('l F d, Y \@ g:i A') ; // Friday January 18, 2011 @ 8 AM
337 $o = 'Friendica event notification:' . "\n";
339 $o .= '**' . bb2diaspora($ev['desc']) . '**' . "\n";
341 $o .= t('Starts:') . ' ' . '['
342 . (($ev['adjust']) ? day_translate(datetime_convert('UTC', 'UTC',
343 $ev['start'] , $bd_format ))
344 : day_translate(datetime_convert('UTC', 'UTC',
345 $ev['start'] , $bd_format)))
346 . '](' . $a->get_baseurl() . '/localtime/?f=&time=' . urlencode(datetime_convert('UTC','UTC',$ev['start'])) . ")\n";
348 if(! $ev['nofinish'])
349 $o .= t('Finishes:') . ' ' . '['
350 . (($ev['adjust']) ? day_translate(datetime_convert('UTC', 'UTC',
351 $ev['finish'] , $bd_format ))
352 : day_translate(datetime_convert('UTC', 'UTC',
353 $ev['finish'] , $bd_format )))
354 . '](' . $a->get_baseurl() . '/localtime/?f=&time=' . urlencode(datetime_convert('UTC','UTC',$ev['finish'])) . ")\n";
356 if(strlen($ev['location']))
357 $o .= t('Location:') . bb2diaspora($ev['location'])