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         $file = tempnam("/tmp/friendica/", "markdown");
  18         file_put_contents($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         // <br/> is invalid. Replace it with the valid expression
  28         $s = str_replace("<br/>","<br />",$s);
  29
  30         $s = preg_replace('/\@\{(.+?)\; (.+?)\@(.+?)\}/','@[url=https://$3/u/$2]$1[/url]',$s);
  31
  32         // Escaping the hash tags - doesn't always seem to work
  33         // $s = preg_replace('/\#([^\s\#])/','\\#$1',$s);
  34         // This seems to work
  35         $s = preg_replace('/\#([^\s\#])/','&#35;$1',$s);
  36
  37         $s = Markdown($s);
  38
  39         $s = str_replace('&#35;','#',$s);
  40
  41         $s = str_replace("\n",'<br />',$s);
  42
  43         $s = html2bbcode($s);
  44 //      $s = str_replace('&#42;','*',$s);
  45
  46         // Convert everything that looks like a link to a link
  47         $s = preg_replace("/([^\]\=]|^)(https?\:\/\/)([a-zA-Z0-9\:\/\-\?\&\;\.\=\_\~\#\%\$\!\+\,]+)/ism", '$1[url=$2$3]$2$3[/url]',$s);
  48
  49         //$s = preg_replace("/([^\]\=]|^)(https?\:\/\/)(vimeo|youtu|www\.youtube|soundcloud)([a-zA-Z0-9\:\/\-\?\&\;\.\=\_\~\#\%\$\!\+\,]+)/ism", '$1[url=$2$3$4]$2$3$4[/url]',$s);
  50         $s = preg_replace("/\[url\=?(.*?)\]https?:\/\/www.youtube.com\/watch\?v\=(.*?)\[\/url\]/ism",'[youtube]$2[/youtube]',$s);
  51         $s = preg_replace("/\[url\=https?:\/\/www.youtube.com\/watch\?v\=(.*?)\].*?\[\/url\]/ism",'[youtube]$1[/youtube]',$s);
  52         $s = preg_replace("/\[url\=?(.*?)\]https?:\/\/vimeo.com\/([0-9]+)(.*?)\[\/url\]/ism",'[vimeo]$2[/vimeo]',$s);
  53         $s = preg_replace("/\[url\=https?:\/\/vimeo.com\/([0-9]+)\](.*?)\[\/url\]/ism",'[vimeo]$1[/vimeo]',$s);
  54         // remove duplicate adjacent code tags
  55         $s = preg_replace("/(\[code\])+(.*?)(\[\/code\])+/ism","[code]$2[/code]", $s);
  56
  57         // Don't show link to full picture (until it is fixed)
  58         $s = scale_diaspora_images($s, false);
  59
  60         return $s;
  61 }
  62
  63
  64 function scale_diaspora_images($s,$include_link = true) {
  65
  66         $matches = null;
  67         $c = preg_match_all('/\[img\](.*?)\[\/img\]/ism',$s,$matches,PREG_SET_ORDER);
  68         if($c) {
  69                 require_once('include/Photo.php');
  70                 foreach($matches as $mtch) {
  71                         logger('scale_diaspora_image: ' . $mtch[1]);
  72                         $i = fetch_url($mtch[1]);
  73                         if($i) {
  74                                 $ph = new Photo($i);
  75                                 if($ph->is_valid()) {
  76                                         if($ph->getWidth() > 600 || $ph->getHeight() > 600) {
  77                                                 $ph->scaleImage(600);
  78                                                 $new_width = $ph->getWidth();
  79                                                 $new_height = $ph->getHeight();
  80                                                 logger('scale_diaspora_image: ' . $new_width . 'w ' . $new_height . 'h' . 'match: ' . $mtch[0], LOGGER_DEBUG);
  81                                                 $s = str_replace($mtch[0],'[img=' . $new_width . 'x' . $new_height. ']' . $mtch[1] . '[/img]'
  82                                                         . "\n" . (($include_link)
  83                                                                 ? '[url=' . $mtch[1] . ']' . t('view full size') . '[/url]' . "\n"
  84                                                                 : ''),$s);
  85                                                 logger('scale_diaspora_image: new string: ' . $s, LOGGER_DEBUG);
  86                                         }
  87                                 }
  88                         }
  89                 }
  90         }
  91         return $s;
  92 }
  93
  94 function stripdcode_br_cb($s) {
  95         return '[code]' . str_replace('<br />', "\n\t", $s[1]) . '[/code]';
  96 }
  97
  98
  99
 100 function bb2diaspora($Text,$preserve_nl = false) {
 101
 102         $ev = bbtoevent($Text);
 103
 104         // Replace any html brackets with HTML Entities to prevent executing HTML or script
 105         // Don't use strip_tags here because it breaks [url] search by replacing & with amp
 106
 107         $Text = str_replace("<", "&lt;", $Text);
 108         $Text = str_replace(">", "&gt;", $Text);
 109
 110         // If we find any event code, turn it into an event.
 111         // After we're finished processing the bbcode we'll
 112         // replace all of the event code with a reformatted version.
 113
 114
 115         if($preserve_nl)
 116                 $Text = str_replace(array("\n","\r"), array('',''),$Text);
 117
 118         // Set up the parameters for a URL search string
 119         $URLSearchString = "^\[\]";
 120         // Set up the parameters for a MAIL search string
 121         $MAILSearchString = $URLSearchString;
 122
 123         // Perform URL Search
 124
 125         // [img]pathtoimage[/img]
 126
 127         // the following was added on 10-January-2012 due to an inability of Diaspora's
 128         // new javascript markdown processor to handle links with images as the link "text"
 129         // It is not optimal and may be removed if this ability is restored in the future
 130
 131         $Text = preg_replace("/\[url\=([$URLSearchString]*)\]\[img\](.*?)\[\/img\]\[\/url\]/ism",
 132                 '![' . t('image/photo') . '](' . '$2' . ')' . "\n" . '[' . t('link') . '](' . '$1' . ')', $Text);
 133
 134         $Text = preg_replace("/\[bookmark\]([$URLSearchString]*)\[\/bookmark\]/ism", '[$1]($1)', $Text);
 135         $Text = preg_replace("/\[bookmark\=([$URLSearchString]*)\](.*?)\[\/bookmark\]/ism", '[$2]($1)', $Text);
 136
 137         $Text = preg_replace("/\[url\]([$URLSearchString]*)\[\/url\]/ism", '[$1]($1)', $Text);
 138         $Text = preg_replace("/\#\[url\=([$URLSearchString]*)\](.*?)\[\/url\]/ism", '[#$2]($1)', $Text);
 139         $Text = preg_replace("/\[url\=([$URLSearchString]*)\](.*?)\[\/url\]/ism", '[$2]($1)', $Text);
 140
 141
 142         $Text = preg_replace("/\[img\](.*?)\[\/img\]/", '![' . t('image/photo') . '](' . '$1' . ')', $Text);
 143         $Text = preg_replace("/\[img\=(.*?)\](.*?)\[\/img\]/", '![' . t('image/photo') . '](' . '$2' . ')', $Text);
 144
 145         // Perform MAIL Search
 146         $Text = preg_replace("(\[mail\]([$MAILSearchString]*)\[/mail\])", '[$1](mailto:$1)', $Text);
 147         $Text = preg_replace("/\[mail\=([$MAILSearchString]*)\](.*?)\[\/mail\]/", '[$2](mailto:$1)', $Text);
 148
 149         $Text = str_replace('*', '\\*', $Text);
 150         $Text = str_replace('_', '\\_', $Text);
 151
 152         $Text = str_replace('`','\\`', $Text);
 153
 154         // Check for bold text
 155         $Text = preg_replace("(\[b\](.*?)\[\/b\])is",'**$1**',$Text);
 156
 157         // Check for Italics text
 158         $Text = preg_replace("(\[i\](.*?)\[\/i\])is",'_$1_',$Text);
 159
 160         // Check for Underline text
 161 //      $Text = preg_replace("(\[u\](.*?)\[\/u\])is",'<u>$1</u>',$Text);
 162
 163         // Check for strike-through text
 164 //      $Text = preg_replace("(\[s\](.*?)\[\/s\])is",'<strike>$1</strike>',$Text);
 165
 166         // Check for over-line text
 167 //      $Text = preg_replace("(\[o\](.*?)\[\/o\])is",'<span class="overline">$1</span>',$Text);
 168
 169         // Check for colored text
 170 //      $Text = preg_replace("(\[color=(.*?)\](.*?)\[\/color\])is","<span style=\"color: $1;\">$2</span>",$Text);
 171
 172         // Check for sized text
 173 //      $Text = preg_replace("(\[size=(.*?)\](.*?)\[\/size\])is","<span style=\"font-size: $1;\">$2</span>",$Text);
 174
 175         // Check for list text
 176 //      $Text = preg_replace("/\[list\](.*?)\[\/list\]/is", '<ul class="listbullet">$1</ul>' ,$Text);
 177 //      $Text = preg_replace("/\[list=1\](.*?)\[\/list\]/is", '<ul class="listdecimal">$1</ul>' ,$Text);
 178 //      $Text = preg_replace("/\[list=i\](.*?)\[\/list\]/s",'<ul class="listlowerroman">$1</ul>' ,$Text);
 179 //      $Text = preg_replace("/\[list=I\](.*?)\[\/list\]/s", '<ul class="listupperroman">$1</ul>' ,$Text);
 180 //      $Text = preg_replace("/\[list=a\](.*?)\[\/list\]/s", '<ul class="listloweralpha">$1</ul>' ,$Text);
 181 //      $Text = preg_replace("/\[list=A\](.*?)\[\/list\]/s", '<ul class="listupperalpha">$1</ul>' ,$Text);
 182 //      $Text = preg_replace("/\[li\](.*?)\[\/li\]/s", '<li>$1</li>' ,$Text);
 183
 184 //      $Text = preg_replace("/\[td\](.*?)\[\/td\]/s", '<td>$1</td>' ,$Text);
 185 //      $Text = preg_replace("/\[tr\](.*?)\[\/tr\]/s", '<tr>$1</tr>' ,$Text);
 186 //      $Text = preg_replace("/\[table\](.*?)\[\/table\]/s", '<table>$1</table>' ,$Text);
 187
 188 //      $Text = preg_replace("/\[table border=1\](.*?)\[\/table\]/s", '<table border="1" >$1</table>' ,$Text);
 189 //      $Text = preg_replace("/\[table border=0\](.*?)\[\/table\]/s", '<table border="0" >$1</table>' ,$Text);
 190
 191
 192 //      $Text = str_replace("[*]", "<li>", $Text);
 193
 194         // Check for font change text
 195 //      $Text = preg_replace("(\[font=(.*?)\](.*?)\[\/font\])","<span style=\"font-family: $1;\">$2</span>",$Text);
 196
 197
 198     $Text = preg_replace_callback("/\[code\](.*?)\[\/code\]/is",'stripdcode_br_cb',$Text);
 199
 200         // Check for [code] text
 201         $Text = preg_replace("/(\[code\])+(.*?)(\[\/code\])+/is","\t$2\n", $Text);
 202
 203
 204
 205
 206         // Declare the format for [quote] layout
 207         //      $QuoteLayout = '<blockquote>$1</blockquote>';
 208         // Check for [quote] text
 209         $Text = preg_replace("/\[quote\](.*?)\[\/quote\]/is",">$1\n\n", $Text);
 210
 211         // Images
 212
 213         // html5 video and audio
 214
 215         $Text = preg_replace("/\[video\](.*?)\[\/video\]/", '$1', $Text);
 216
 217         $Text = preg_replace("/\[audio\](.*?)\[\/audio\]/", '$1', $Text);
 218
 219 //      $Text = preg_replace("/\[iframe\](.*?)\[\/iframe\]/", '<iframe src="$1" width="425" height="350"><a href="$1">$1</a></iframe>', $Text);
 220
 221         // [img=widthxheight]image source[/img]
 222 //      $Text = preg_replace("/\[img\=([0-9]*)x([0-9]*)\](.*?)\[\/img\]/", '<img src="$3" style="height:{$2}px; width:{$1}px;" >', $Text);
 223
 224     $Text = preg_replace("/\[youtube\]https?:\/\/www.youtube.com\/watch\?v\=(.*?)\[\/youtube\]/ism",'http://www.youtube.com/watch?v=$1',$Text);
 225     $Text = preg_replace("/\[youtube\]https?:\/\/www.youtube.com\/embed\/(.*?)\[\/youtube\]/ism",'http://www.youtube.com/watch?v=$1',$Text);
 226     $Text = preg_replace("/\[youtube\]https?:\/\/youtu.be\/(.*?)\[\/youtube\]/ism",'http://www.youtube.com/watch?v=$1',$Text);
 227         $Text = preg_replace("/\[youtube\]([A-Za-z0-9\-_=]+)(.*?)\[\/youtube\]/ism", 'http://www.youtube.com/watch?v=$1', $Text);
 228
 229         $Text = preg_replace("/\[vimeo\]https?:\/\/player.vimeo.com\/video\/([0-9]+)(.*?)\[\/vimeo\]/ism",'http://vimeo.com/$1',$Text);
 230         $Text = preg_replace("/\[vimeo\]https?:\/\/vimeo.com\/([0-9]+)(.*?)\[\/vimeo\]/ism",'http://vimeo.com/$1',$Text);
 231         $Text = preg_replace("/\[vimeo\]([0-9]+)(.*?)\[\/vimeo\]/ism", 'http://vimeo.com/$1',$Text);
 232
 233
 234         $Text = str_replace('[nosmile]','',$Text);
 235
 236         // oembed tag
 237         //      $Text = oembed_bbcode2html($Text);
 238
 239         // If we found an event earlier, strip out all the event code and replace with a reformatted version.
 240
 241         if(x($ev,'desc') && x($ev,'start')) {
 242
 243                 $sub = format_event_diaspora($ev);
 244
 245                 $Text = preg_replace("/\[event\-description\](.*?)\[\/event\-description\]/is",$sub,$Text);
 246                 $Text = preg_replace("/\[event\-start\](.*?)\[\/event\-start\]/is",'',$Text);
 247                 $Text = preg_replace("/\[event\-finish\](.*?)\[\/event\-finish\]/is",'',$Text);
 248                 $Text = preg_replace("/\[event\-location\](.*?)\[\/event\-location\]/is",'',$Text);
 249                 $Text = preg_replace("/\[event\-adjust\](.*?)\[\/event\-adjust\]/is",'',$Text);
 250         }
 251
 252         $Text = preg_replace("/\<(.*?)(src|href)=(.*?)\&amp\;(.*?)\>/ism",'<$1$2=$3&$4>',$Text);
 253
 254         $Text = preg_replace('/\[(.*?)\]\((.*?)\\\\_(.*?)\)/ism','[$1]($2_$3)',$Text);
 255
 256         call_hooks('bb2diaspora',$Text);
 257
 258         return $Text;
 259 }
 260
 261 function format_event_diaspora($ev) {
 262
 263         $a = get_app();
 264
 265         if(! ((is_array($ev)) && count($ev)))
 266                 return '';
 267
 268         $bd_format = t('l F d, Y \@ g:i A') ; // Friday January 18, 2011 @ 8 AM
 269
 270         $o = 'Friendica event notification:' . "\n";
 271
 272         $o .= '**' . bb2diaspora($ev['desc']) .  '**' . "\n";
 273
 274         $o .= t('Starts:') . ' ' . '['
 275                 . (($ev['adjust']) ? day_translate(datetime_convert('UTC', 'UTC',
 276                         $ev['start'] , $bd_format ))
 277                         :  day_translate(datetime_convert('UTC', 'UTC',
 278                         $ev['start'] , $bd_format)))
 279                 .  '](' . $a->get_baseurl() . '/localtime/?f=&time=' . urlencode(datetime_convert('UTC','UTC',$ev['start'])) . ")\n";
 280
 281         if(! $ev['nofinish'])
 282                 $o .= t('Finishes:') . ' ' . '['
 283                         . (($ev['adjust']) ? day_translate(datetime_convert('UTC', 'UTC',
 284                                 $ev['finish'] , $bd_format ))
 285                                 :  day_translate(datetime_convert('UTC', 'UTC',
 286                                 $ev['finish'] , $bd_format )))
 287                         . '](' . $a->get_baseurl() . '/localtime/?f=&time=' . urlencode(datetime_convert('UTC','UTC',$ev['finish'])) . ")\n";
 288
 289         if(strlen($ev['location']))
 290                 $o .= t('Location:') . bb2diaspora($ev['location'])
 291                         . "\n";
 292
 293         $o .= "\n";
 294         return $o;
 295 }