include/bb2diaspora.php

   1 <?php
   2
   3 require_once("include/oembed.php");
   4 require_once('include/event.php');
   5
   6 require_once('library/markdown.php');
   7 require_once('include/html2bbcode.php');
   8
   9 // we don't want to support a bbcode specific markdown interpreter
  10 // and the markdown library we have is pretty good, but provides HTML output.
  11 // So we'll use that to convert to HTML, then convert the HTML back to bbcode,
  12 // and then clean up a few Diaspora specific constructs.
  13
  14 function diaspora2bb($s) {
  15
  16         // for testing purposes: Collect raw markdown articles
  17         $file = tempnam("/tmp/", "markdown");
  18         file_put_contents($file, $s);
  19
  20         $s = html_entity_decode($s,ENT_COMPAT,'UTF-8');
  21
  22         // Too many new lines. So deactivated the following line
  23         // $s = str_replace("\r","\n",$s);
  24         // Simply remove cr.
  25         $s = str_replace("\r","",$s);
  26
  27         $s = preg_replace('/\@\{(.+?)\; (.+?)\@(.+?)\}/','@[url=https://$3/u/$2]$1[/url]',$s);
  28
  29         // Escaping the hash tags - doesn't always seem to work
  30         // $s = preg_replace('/\#([^\s\#])/','\\#$1',$s);
  31         // This seems to work
  32         $s = preg_replace('/\#([^\s\#])/','&#35;$1',$s);
  33
  34         $s = Markdown($s);
  35
  36         $s = str_replace('&#35;','#',$s);
  37
  38         // Again: too many new lines
  39         //$s = str_replace("\n",'<br />',$s);
  40
  41         $s = html2bbcode($s);
  42 //      $s = str_replace('&#42;','*',$s);
  43
  44
  45         $s = preg_replace("/\[url\=?(.*?)\]https?:\/\/www.youtube.com\/watch\?v\=(.*?)\[\/url\]/ism",'[youtube]$2[/youtube]',$s);
  46         $s = preg_replace("/\[url\=https?:\/\/www.youtube.com\/watch\?v\=(.*?)\].*?\[\/url\]/ism",'[youtube]$1[/youtube]',$s);
  47         $s = preg_replace("/\[url\=?(.*?)\]https?:\/\/vimeo.com\/([0-9]+)(.*?)\[\/url\]/ism",'[vimeo]$2[/vimeo]',$s);
  48         $s = preg_replace("/\[url\=https?:\/\/vimeo.com\/([0-9]+)\](.*?)\[\/url\]/ism",'[vimeo]$1[/vimeo]',$s);
  49         $s = preg_replace("/([^\]\=]|^)(https?\:\/\/)(vimeo|youtu|www\.youtube|soundcloud)([a-zA-Z0-9\:\/\-\?\&\;\.\=\_\~\#\%\$\!\+\,]+)/ism", '$1[url]$2$3$4[/url]',$s);
  50         // remove duplicate adjacent code tags
  51         $s = preg_replace("/(\[code\])+(.*?)(\[\/code\])+/ism","[code]$2[/code]", $s);
  52
  53         // Don't show link to full picture (until it is fixed)
  54         $s = scale_diaspora_images($s, false);
  55
  56         return $s;
  57 }
  58
  59
  60 function scale_diaspora_images($s,$include_link = true) {
  61
  62         $matches = null;
  63         $c = preg_match_all('/\[img\](.*?)\[\/img\]/ism',$s,$matches,PREG_SET_ORDER);
  64         if($c) {
  65                 require_once('include/Photo.php');
  66                 foreach($matches as $mtch) {
  67                         logger('scale_diaspora_image: ' . $mtch[1]);
  68                         $i = fetch_url($mtch[1]);
  69                         if($i) {
  70                                 $ph = new Photo($i);
  71                                 if($ph->is_valid()) {
  72                                         if($ph->getWidth() > 600 || $ph->getHeight() > 600) {
  73                                                 $ph->scaleImage(600);
  74                                                 $new_width = $ph->getWidth();
  75                                                 $new_height = $ph->getHeight();
  76                                                 logger('scale_diaspora_image: ' . $new_width . 'w ' . $new_height . 'h' . 'match: ' . $mtch[0], LOGGER_DEBUG);
  77                                                 $s = str_replace($mtch[0],'[img=' . $new_width . 'x' . $new_height. ']' . $mtch[1] . '[/img]'
  78                                                         . "\n" . (($include_link)
  79                                                                 ? '[url=' . $mtch[1] . ']' . t('view full size') . '[/url]' . "\n"
  80                                                                 : ''),$s);
  81                                                 logger('scale_diaspora_image: new string: ' . $s, LOGGER_DEBUG);
  82                                         }
  83                                 }
  84                         }
  85                 }
  86         }
  87         return $s;
  88 }
  89
  90 function stripdcode_br_cb($s) {
  91         return '[code]' . str_replace('<br />', "\n\t", $s[1]) . '[/code]';
  92 }
  93
  94
  95
  96 function bb2diaspora($Text,$preserve_nl = false) {
  97
  98         $ev = bbtoevent($Text);
  99
 100         // Replace any html brackets with HTML Entities to prevent executing HTML or script
 101         // Don't use strip_tags here because it breaks [url] search by replacing & with amp
 102
 103         $Text = str_replace("<", "&lt;", $Text);
 104         $Text = str_replace(">", "&gt;", $Text);
 105
 106         // If we find any event code, turn it into an event.
 107         // After we're finished processing the bbcode we'll
 108         // replace all of the event code with a reformatted version.
 109
 110
 111         if($preserve_nl)
 112                 $Text = str_replace(array("\n","\r"), array('',''),$Text);
 113
 114         // Set up the parameters for a URL search string
 115         $URLSearchString = "^\[\]";
 116         // Set up the parameters for a MAIL search string
 117         $MAILSearchString = $URLSearchString;
 118
 119         // Perform URL Search
 120
 121         // [img]pathtoimage[/img]
 122
 123         // the following was added on 10-January-2012 due to an inability of Diaspora's
 124         // new javascript markdown processor to handle links with images as the link "text"
 125         // It is not optimal and may be removed if this ability is restored in the future
 126
 127         $Text = preg_replace("/\[url\=([$URLSearchString]*)\]\[img\](.*?)\[\/img\]\[\/url\]/ism",
 128                 '![' . t('image/photo') . '](' . '$2' . ')' . "\n" . '[' . t('link') . '](' . '$1' . ')', $Text);
 129
 130         $Text = preg_replace("/\[bookmark\]([$URLSearchString]*)\[\/bookmark\]/ism", '[$1]($1)', $Text);
 131         $Text = preg_replace("/\[bookmark\=([$URLSearchString]*)\](.*?)\[\/bookmark\]/ism", '[$2]($1)', $Text);
 132
 133         $Text = preg_replace("/\[url\]([$URLSearchString]*)\[\/url\]/ism", '[$1]($1)', $Text);
 134         $Text = preg_replace("/\#\[url\=([$URLSearchString]*)\](.*?)\[\/url\]/ism", '[#$2]($1)', $Text);
 135         $Text = preg_replace("/\[url\=([$URLSearchString]*)\](.*?)\[\/url\]/ism", '[$2]($1)', $Text);
 136
 137
 138         $Text = preg_replace("/\[img\](.*?)\[\/img\]/", '![' . t('image/photo') . '](' . '$1' . ')', $Text);
 139         $Text = preg_replace("/\[img\=(.*?)\](.*?)\[\/img\]/", '![' . t('image/photo') . '](' . '$2' . ')', $Text);
 140
 141         // Perform MAIL Search
 142         $Text = preg_replace("(\[mail\]([$MAILSearchString]*)\[/mail\])", '[$1](mailto:$1)', $Text);
 143         $Text = preg_replace("/\[mail\=([$MAILSearchString]*)\](.*?)\[\/mail\]/", '[$2](mailto:$1)', $Text);
 144
 145         $Text = str_replace('*', '\\*', $Text);
 146         $Text = str_replace('_', '\\_', $Text);
 147
 148         $Text = str_replace('`','\\`', $Text);
 149
 150         // Check for bold text
 151         $Text = preg_replace("(\[b\](.*?)\[\/b\])is",'**$1**',$Text);
 152
 153         // Check for Italics text
 154         $Text = preg_replace("(\[i\](.*?)\[\/i\])is",'_$1_',$Text);
 155
 156         // Check for Underline text
 157 //      $Text = preg_replace("(\[u\](.*?)\[\/u\])is",'<u>$1</u>',$Text);
 158
 159         // Check for strike-through text
 160 //      $Text = preg_replace("(\[s\](.*?)\[\/s\])is",'<strike>$1</strike>',$Text);
 161
 162         // Check for over-line text
 163 //      $Text = preg_replace("(\[o\](.*?)\[\/o\])is",'<span class="overline">$1</span>',$Text);
 164
 165         // Check for colored text
 166 //      $Text = preg_replace("(\[color=(.*?)\](.*?)\[\/color\])is","<span style=\"color: $1;\">$2</span>",$Text);
 167
 168         // Check for sized text
 169 //      $Text = preg_replace("(\[size=(.*?)\](.*?)\[\/size\])is","<span style=\"font-size: $1;\">$2</span>",$Text);
 170
 171         // Check for list text
 172 //      $Text = preg_replace("/\[list\](.*?)\[\/list\]/is", '<ul class="listbullet">$1</ul>' ,$Text);
 173 //      $Text = preg_replace("/\[list=1\](.*?)\[\/list\]/is", '<ul class="listdecimal">$1</ul>' ,$Text);
 174 //      $Text = preg_replace("/\[list=i\](.*?)\[\/list\]/s",'<ul class="listlowerroman">$1</ul>' ,$Text);
 175 //      $Text = preg_replace("/\[list=I\](.*?)\[\/list\]/s", '<ul class="listupperroman">$1</ul>' ,$Text);
 176 //      $Text = preg_replace("/\[list=a\](.*?)\[\/list\]/s", '<ul class="listloweralpha">$1</ul>' ,$Text);
 177 //      $Text = preg_replace("/\[list=A\](.*?)\[\/list\]/s", '<ul class="listupperalpha">$1</ul>' ,$Text);
 178 //      $Text = preg_replace("/\[li\](.*?)\[\/li\]/s", '<li>$1</li>' ,$Text);
 179
 180 //      $Text = preg_replace("/\[td\](.*?)\[\/td\]/s", '<td>$1</td>' ,$Text);
 181 //      $Text = preg_replace("/\[tr\](.*?)\[\/tr\]/s", '<tr>$1</tr>' ,$Text);
 182 //      $Text = preg_replace("/\[table\](.*?)\[\/table\]/s", '<table>$1</table>' ,$Text);
 183
 184 //      $Text = preg_replace("/\[table border=1\](.*?)\[\/table\]/s", '<table border="1" >$1</table>' ,$Text);
 185 //      $Text = preg_replace("/\[table border=0\](.*?)\[\/table\]/s", '<table border="0" >$1</table>' ,$Text);
 186
 187
 188 //      $Text = str_replace("[*]", "<li>", $Text);
 189
 190         // Check for font change text
 191 //      $Text = preg_replace("(\[font=(.*?)\](.*?)\[\/font\])","<span style=\"font-family: $1;\">$2</span>",$Text);
 192
 193
 194     $Text = preg_replace_callback("/\[code\](.*?)\[\/code\]/is",'stripdcode_br_cb',$Text);
 195
 196         // Check for [code] text
 197         $Text = preg_replace("/(\[code\])+(.*?)(\[\/code\])+/is","\t$2\n", $Text);
 198
 199
 200
 201
 202         // Declare the format for [quote] layout
 203         //      $QuoteLayout = '<blockquote>$1</blockquote>';
 204         // Check for [quote] text
 205         $Text = preg_replace("/\[quote\](.*?)\[\/quote\]/is",">$1\n\n", $Text);
 206
 207         // Images
 208
 209         // html5 video and audio
 210
 211         $Text = preg_replace("/\[video\](.*?)\[\/video\]/", '$1', $Text);
 212
 213         $Text = preg_replace("/\[audio\](.*?)\[\/audio\]/", '$1', $Text);
 214
 215 //      $Text = preg_replace("/\[iframe\](.*?)\[\/iframe\]/", '<iframe src="$1" width="425" height="350"><a href="$1">$1</a></iframe>', $Text);
 216
 217         // [img=widthxheight]image source[/img]
 218 //      $Text = preg_replace("/\[img\=([0-9]*)x([0-9]*)\](.*?)\[\/img\]/", '<img src="$3" style="height:{$2}px; width:{$1}px;" >', $Text);
 219
 220     $Text = preg_replace("/\[youtube\]https?:\/\/www.youtube.com\/watch\?v\=(.*?)\[\/youtube\]/ism",'http://www.youtube.com/watch?v=$1',$Text);
 221     $Text = preg_replace("/\[youtube\]https?:\/\/www.youtube.com\/embed\/(.*?)\[\/youtube\]/ism",'http://www.youtube.com/watch?v=$1',$Text);
 222     $Text = preg_replace("/\[youtube\]https?:\/\/youtu.be\/(.*?)\[\/youtube\]/ism",'http://www.youtube.com/watch?v=$1',$Text);
 223         $Text = preg_replace("/\[youtube\]([A-Za-z0-9\-_=]+)(.*?)\[\/youtube\]/ism", 'http://www.youtube.com/watch?v=$1', $Text);
 224
 225         $Text = preg_replace("/\[vimeo\]https?:\/\/player.vimeo.com\/video\/([0-9]+)(.*?)\[\/vimeo\]/ism",'http://vimeo.com/$1',$Text);
 226         $Text = preg_replace("/\[vimeo\]https?:\/\/vimeo.com\/([0-9]+)(.*?)\[\/vimeo\]/ism",'http://vimeo.com/$1',$Text);
 227         $Text = preg_replace("/\[vimeo\]([0-9]+)(.*?)\[\/vimeo\]/ism", 'http://vimeo.com/$1',$Text);
 228
 229
 230         $Text = str_replace('[nosmile]','',$Text);
 231
 232         // oembed tag
 233         //      $Text = oembed_bbcode2html($Text);
 234
 235         // If we found an event earlier, strip out all the event code and replace with a reformatted version.
 236
 237         if(x($ev,'desc') && x($ev,'start')) {
 238
 239                 $sub = format_event_diaspora($ev);
 240
 241                 $Text = preg_replace("/\[event\-description\](.*?)\[\/event\-description\]/is",$sub,$Text);
 242                 $Text = preg_replace("/\[event\-start\](.*?)\[\/event\-start\]/is",'',$Text);
 243                 $Text = preg_replace("/\[event\-finish\](.*?)\[\/event\-finish\]/is",'',$Text);
 244                 $Text = preg_replace("/\[event\-location\](.*?)\[\/event\-location\]/is",'',$Text);
 245                 $Text = preg_replace("/\[event\-adjust\](.*?)\[\/event\-adjust\]/is",'',$Text);
 246         }
 247
 248         $Text = preg_replace("/\<(.*?)(src|href)=(.*?)\&amp\;(.*?)\>/ism",'<$1$2=$3&$4>',$Text);
 249
 250         $Text = preg_replace('/\[(.*?)\]\((.*?)\\\\_(.*?)\)/ism','[$1]($2_$3)',$Text);
 251
 252         call_hooks('bb2diaspora',$Text);
 253
 254         return $Text;
 255 }
 256
 257 function format_event_diaspora($ev) {
 258
 259         $a = get_app();
 260
 261         if(! ((is_array($ev)) && count($ev)))
 262                 return '';
 263
 264         $bd_format = t('l F d, Y \@ g:i A') ; // Friday January 18, 2011 @ 8 AM
 265
 266         $o = 'Friendica event notification:' . "\n";
 267
 268         $o .= '**' . bb2diaspora($ev['desc']) .  '**' . "\n";
 269
 270         $o .= t('Starts:') . ' ' . '['
 271                 . (($ev['adjust']) ? day_translate(datetime_convert('UTC', 'UTC',
 272                         $ev['start'] , $bd_format ))
 273                         :  day_translate(datetime_convert('UTC', 'UTC',
 274                         $ev['start'] , $bd_format)))
 275                 .  '](' . $a->get_baseurl() . '/localtime/?f=&time=' . urlencode(datetime_convert('UTC','UTC',$ev['start'])) . ")\n";
 276
 277         if(! $ev['nofinish'])
 278                 $o .= t('Finishes:') . ' ' . '['
 279                         . (($ev['adjust']) ? day_translate(datetime_convert('UTC', 'UTC',
 280                                 $ev['finish'] , $bd_format ))
 281                                 :  day_translate(datetime_convert('UTC', 'UTC',
 282                                 $ev['finish'] , $bd_format )))
 283                         . '](' . $a->get_baseurl() . '/localtime/?f=&time=' . urlencode(datetime_convert('UTC','UTC',$ev['finish'])) . ")\n";
 284
 285         if(strlen($ev['location']))
 286                 $o .= t('Location:') . bb2diaspora($ev['location'])
 287                         . "\n";
 288
 289         $o .= "\n";
 290         return $o;
 291 }