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