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