include/bbcode.php

   1 <?php
   2
   3 require_once("include/oembed.php");
   4 require_once('include/event.php');
   5
   6
   7
   8 function stripcode_br_cb($s) {
   9         return '[code]' . str_replace('<br />', '', $s[1]) . '[/code]';
  10 }
  11
  12 function tryoembed($match){
  13         $url = ((count($match)==2)?$match[1]:$match[2]);
  14 //      logger("tryoembed: $url");
  15
  16         $o = oembed_fetch_url($url);
  17
  18         //echo "<pre>"; var_dump($match, $url, $o); killme();
  19
  20         if ($o->type=="error") return $match[0];
  21
  22         $html = oembed_format_object($o);
  23         return $html; //oembed_iframe($html,$o->width,$o->height);
  24
  25 }
  26
  27 // [noparse][i]italic[/i][/noparse] turns into
  28 // [noparse][ i ]italic[ /i ][/noparse],
  29 // to hide them from parser.
  30
  31 function bb_spacefy($st) {
  32   $whole_match = $st[0];
  33   $captured = $st[1];
  34   $spacefied = preg_replace("/\[(.*?)\]/", "[ $1 ]", $captured);
  35   $new_str = str_replace($captured, $spacefied, $whole_match);
  36   return $new_str;
  37 }
  38
  39 // The previously spacefied [noparse][ i ]italic[ /i ][/noparse],
  40 // now turns back and the [noparse] tags are trimed
  41 // returning [i]italic[/i]
  42
  43 function bb_unspacefy_and_trim($st) {
  44   $whole_match = $st[0];
  45   $captured = $st[1];
  46   $unspacefied = preg_replace("/\[ (.*?)\ ]/", "[$1]", $captured);
  47   return $unspacefied;
  48 }
  49
  50         // BBcode 2 HTML was written by WAY2WEB.net
  51         // extended to work with Mistpark/Friendica - Mike Macgirvin
  52
  53 function bbcode($Text,$preserve_nl = false, $tryoembed = true) {
  54
  55         $a = get_app();
  56
  57         // Hide all [noparse] contained bbtags spacefying them
  58
  59         $Text = preg_replace_callback("/\[noparse\](.*?)\[\/noparse\]/ism", 'bb_spacefy',$Text);
  60         $Text = preg_replace_callback("/\[nobb\](.*?)\[\/nobb\]/ism", 'bb_spacefy',$Text);
  61         $Text = preg_replace_callback("/\[pre\](.*?)\[\/pre\]/ism", 'bb_spacefy',$Text);
  62
  63
  64         // Extract a single private image which uses data url's since preg has issues with
  65         // large data sizes. Stash it away while we do bbcode conversion, and then put it back
  66         // in after we've done all the regex matching. We cannot use any preg functions to do this.
  67
  68         $saved_image = '';
  69         $img_start = strpos($Text,'[img]data:');
  70         $img_end = strpos($Text,'[/img]');
  71
  72         if($img_start !== false && $img_end !== false && $img_end > $img_start) {
  73                 $start_fragment = substr($Text,0,$img_start);
  74                 $img_start += strlen('[img]');
  75                 $saved_image = substr($Text,$img_start,$img_end - $img_start);
  76                 $end_fragment = substr($Text,$img_end + strlen('[/img]'));
  77 //              logger('saved_image: ' . $saved_image,LOGGER_DEBUG);
  78                 $Text = $start_fragment . '[$#saved_image#$]' . $end_fragment;
  79         }
  80
  81         // If we find any event code, turn it into an event.
  82         // After we're finished processing the bbcode we'll
  83         // replace all of the event code with a reformatted version.
  84
  85         $ev = bbtoevent($Text);
  86
  87
  88         // Replace any html brackets with HTML Entities to prevent executing HTML or script
  89         // Don't use strip_tags here because it breaks [url] search by replacing & with amp
  90
  91         $Text = str_replace("<", "&lt;", $Text);
  92         $Text = str_replace(">", "&gt;", $Text);
  93
  94         // Convert new line chars to html <br /> tags
  95
  96         $Text = nl2br($Text);
  97         if($preserve_nl)
  98                 $Text = str_replace(array("\n","\r"), array('',''),$Text);
  99
 100
 101         // Set up the parameters for a URL search string
 102         $URLSearchString = "^\[\]";
 103         // Set up the parameters for a MAIL search string
 104         $MAILSearchString = $URLSearchString;
 105
 106
 107         // Perform URL Search
 108
 109         $Text = preg_replace("/([^\]\=]|^)(https?\:\/\/[a-zA-Z0-9\:\/\-\?\&\;\.\=\_\~\#\%\$\!\+\,]+)/ism", '$1<a href="$2" target="external-link">$2</a>', $Text);
 110
 111         if ($tryoembed)
 112                 $Text = preg_replace_callback("/\[bookmark\=([^\]]*)\].*?\[\/bookmark\]/ism",'tryoembed',$Text);
 113
 114         $Text = preg_replace("/\[bookmark\=([^\]]*)\](.*?)\[\/bookmark\]/ism",'[url=$1]$2[/url]',$Text);
 115
 116         if ($tryoembed)
 117                 $Text = preg_replace_callback("/\[url\]([$URLSearchString]*)\[\/url\]/ism",'tryoembed',$Text);
 118
 119         $Text = preg_replace("/\[url\]([$URLSearchString]*)\[\/url\]/ism", '<a href="$1" target="external-link">$1</a>', $Text);
 120         $Text = preg_replace("/\[url\=([$URLSearchString]*)\](.*?)\[\/url\]/ism", '<a href="$1" target="external-link">$2</a>', $Text);
 121         //$Text = preg_replace("/\[url\=([$URLSearchString]*)\]([$URLSearchString]*)\[\/url\]/ism", '<a href="$1" target="_blank">$2</a>', $Text);
 122
 123         // we may need to restrict this further if it picks up too many strays
 124         // link acct:user@host to a webfinger profile redirector
 125
 126         $Text = preg_replace('/acct:(.*?)@(.*?)([ ,])/', '<a href="' . $a->get_baseurl() . '/acctlink?addr=' . "$1@$2"
 127                 . '" target="extlink" >acct:' . "$1@$2$3" . '</a>',$Text);
 128
 129         // Perform MAIL Search
 130         $Text = preg_replace("/\[mail\]([$MAILSearchString]*)\[\/mail\]/", '<a href="mailto:$1">$1</a>', $Text);
 131         $Text = preg_replace("/\[mail\=([$MAILSearchString]*)\](.*?)\[\/mail\]/", '<a href="mailto:$1">$2</a>', $Text);
 132
 133         // Check for bold text
 134         $Text = preg_replace("(\[b\](.*?)\[\/b\])ism",'<strong>$1</strong>',$Text);
 135
 136         // Check for Italics text
 137         $Text = preg_replace("(\[i\](.*?)\[\/i\])ism",'<em>$1</em>',$Text);
 138
 139         // Check for Underline text
 140         $Text = preg_replace("(\[u\](.*?)\[\/u\])ism",'<u>$1</u>',$Text);
 141
 142         // Check for strike-through text
 143         $Text = preg_replace("(\[s\](.*?)\[\/s\])ism",'<strike>$1</strike>',$Text);
 144
 145         // Check for over-line text
 146         $Text = preg_replace("(\[o\](.*?)\[\/o\])ism",'<span class="overline">$1</span>',$Text);
 147
 148         // Check for colored text
 149         $Text = preg_replace("(\[color=(.*?)\](.*?)\[\/color\])ism","<span style=\"color: $1;\">$2</span>",$Text);
 150
 151         // Check for sized text
 152         // [size=50] --> font-size: 50px (with the unit).
 153         $Text = preg_replace("(\[size=(\d*?)\](.*?)\[\/size\])ism","<span style=\"font-size: $1px;\">$2</span>",$Text);
 154         $Text = preg_replace("(\[size=(.*?)\](.*?)\[\/size\])ism","<span style=\"font-size: $1;\">$2</span>",$Text);
 155
 156         // Check for centered text
 157         $Text = preg_replace("(\[center\](.*?)\[\/center\])ism","<div style=\"text-align:center;\">$1</div>",$Text);
 158
 159         // Check for list text
 160         $Text = str_replace("[*]", "<li>", $Text);
 161         $Text = preg_replace("/\[li\](.*?)\[\/li\]/ism", '<li>$1</li>' ,$Text);
 162
 163         // handle nested lists
 164         $endlessloop = 0;
 165         while ((strpos($Text, "[/list]") !== false) && (strpos($Text, "[list") !== false)
 166                (strpos($Text, "[/ol]") !== false) && (strpos($Text, "[ol]") !== false) &&
 167                (strpos($Text, "[/ul]") !== false) && (strpos($Text, "[ul]") !== false) && (++$endlessloop < 20)) {
 168                 $Text = preg_replace("/\[list\](.*?)\[\/list\]/ism", '<ul class="listbullet" style="list-style-type: circle;">$1</ul>' ,$Text);
 169                 $Text = preg_replace("/\[list=\](.*?)\[\/list\]/ism", '<ul class="listnone" style="list-style-type: none;">$1</ul>' ,$Text);
 170                 $Text = preg_replace("/\[list=1\](.*?)\[\/list\]/ism", '<ul class="listdecimal" style="list-style-type: decimal;">$1</ul>' ,$Text);
 171                 $Text = preg_replace("/\[list=((?-i)i)\](.*?)\[\/list\]/ism",'<ul class="listlowerroman" style="list-style-type: lower-roman;">$2</ul>' ,$Text);
 172                 $Text = preg_replace("/\[list=((?-i)I)\](.*?)\[\/list\]/ism", '<ul class="listupperroman" style="list-style-type: upper-roman;">$2</ul>' ,$Text);
 173                 $Text = preg_replace("/\[list=((?-i)a)\](.*?)\[\/list\]/ism", '<ul class="listloweralpha" style="list-style-type: lower-alpha;">$2</ul>' ,$Text);
 174                 $Text = preg_replace("/\[list=((?-i)A)\](.*?)\[\/list\]/ism", '<ul class="listupperalpha" style="list-style-type: upper-alpha;">$2</ul>' ,$Text);
 175                 $Text = preg_replace("/\[ul\](.*?)\[\/ul\]/ism", '<ul class="listbullet" style="list-style-type: circle;">$1</ul>' ,$Text);
 176                 $Text = preg_replace("/\[ol\](.*?)\[\/ol\]/ism", '<ul class="listdecimal" style="list-style-type: decimal;">$1</ul>' ,$Text);
 177         }
 178
 179         $Text = preg_replace("/\[th\](.*?)\[\/th\]/sm", '<th>$1</th>' ,$Text);
 180         $Text = preg_replace("/\[td\](.*?)\[\/td\]/sm", '<td>$1</td>' ,$Text);
 181         $Text = preg_replace("/\[tr\](.*?)\[\/tr\]/sm", '<tr>$1</tr>' ,$Text);
 182         $Text = preg_replace("/\[table\](.*?)\[\/table\]/sm", '<table>$1</table>' ,$Text);
 183
 184         $Text = preg_replace("/\[table border=1\](.*?)\[\/table\]/sm", '<table border="1" >$1</table>' ,$Text);
 185         $Text = preg_replace("/\[table border=0\](.*?)\[\/table\]/sm", '<table border="0" >$1</table>' ,$Text);
 186
 187         $Text = str_replace('[hr]','<hr />', $Text);
 188
 189         // This is actually executed in prepare_body()
 190
 191         $Text = str_replace('[nosmile]','',$Text);
 192
 193         // Check for font change text
 194         $Text = preg_replace("/\[font=(.*?)\](.*?)\[\/font\]/sm","<span style=\"font-family: $1;\">$2</span>",$Text);
 195
 196         // Declare the format for [code] layout
 197
 198         $Text = preg_replace_callback("/\[code\](.*?)\[\/code\]/ism",'stripcode_br_cb',$Text);
 199
 200         $CodeLayout = '<code>$1</code>';
 201         // Check for [code] text
 202         $Text = preg_replace("/\[code\](.*?)\[\/code\]/ism","$CodeLayout", $Text);
 203
 204         // Declare the format for [spoiler] layout
 205         $SpoilerLayout = '<blockquote class="spoiler">$1</blockquote>';
 206
 207         // Check for [spoiler] text
 208         // handle nested quotes
 209         $endlessloop = 0;
 210         while ((strpos($Text, "[/spoiler]") !== false) and (strpos($Text, "[spoiler]") !== false) and (++$endlessloop < 20))
 211                 $Text = preg_replace("/\[spoiler\](.*?)\[\/spoiler\]/ism","$SpoilerLayout", $Text);
 212
 213         // Check for [spoiler=Author] text
 214
 215         $t_wrote = t('$1 wrote:');
 216
 217         // handle nested quotes
 218         $endlessloop = 0;
 219         while ((strpos($Text, "[/spoiler]")!== false)  and (strpos($Text, "[spoiler=") !== false) and (++$endlessloop < 20))
 220                 $Text = preg_replace("/\[spoiler=[\"\']*(.*?)[\"\']*\](.*?)\[\/spoiler\]/ism",
 221                                      "<br /><strong class=".'"spoiler"'.">" . $t_wrote . "</strong><blockquote class=".'"spoiler"'.">$2</blockquote>",
 222                                      $Text);
 223
 224         // Declare the format for [quote] layout
 225         $QuoteLayout = '<blockquote>$1</blockquote>';
 226
 227         // Check for [quote] text
 228         // handle nested quotes
 229         $endlessloop = 0;
 230         while ((strpos($Text, "[/quote]") !== false) and (strpos($Text, "[quote]") !== false) and (++$endlessloop < 20))
 231                 $Text = preg_replace("/\[quote\](.*?)\[\/quote\]/ism","$QuoteLayout", $Text);
 232
 233         // Check for [quote=Author] text
 234
 235         $t_wrote = t('$1 wrote:');
 236
 237         // handle nested quotes
 238         $endlessloop = 0;
 239         while ((strpos($Text, "[/quote]")!== false)  and (strpos($Text, "[quote=") !== false) and (++$endlessloop < 20))
 240                 $Text = preg_replace("/\[quote=[\"\']*(.*?)[\"\']*\](.*?)\[\/quote\]/ism",
 241                                      "<br /><strong class=".'"author"'.">" . $t_wrote . "</strong><blockquote>$2</blockquote>",
 242                                      $Text);
 243
 244         // [img=widthxheight]image source[/img]
 245         //$Text = preg_replace("/\[img\=([0-9]*)x([0-9]*)\](.*?)\[\/img\]/ism", '<img src="$3" style="height: $2px; width: $1px;" >', $Text);
 246         $Text = preg_replace("/\[img\=([0-9]*)x([0-9]*)\](.*?)\[\/img\]/ism", '<img src="$3" style="width: $1px;" >', $Text);
 247
 248         // Images
 249         // [img]pathtoimage[/img]
 250         $Text = preg_replace("/\[img\](.*?)\[\/img\]/ism", '<img src="$1" alt="' . t('Image/photo') . '" />', $Text);
 251
 252
 253         $Text = preg_replace("/\[video\](.*?\.(ogg|ogv|oga|ogm|webm|mp4))\[\/video\]/ism", '<video src="$1" controls="controls" width="425" height="350"><a href="$1">$1</a></video>', $Text);
 254
 255         $Text = preg_replace("/\[audio\](.*?\.(ogg|ogv|oga|ogm|webm|mp4|mp3))\[\/audio\]/ism", '<audio src="$1" controls="controls"><a href="$1">$1</a></audio>', $Text);
 256
 257         // Try to Oembed
 258         if ($tryoembed) {
 259                 $Text = preg_replace_callback("/\[video\](.*?)\[\/video\]/ism", 'tryoembed', $Text);
 260                 $Text = preg_replace_callback("/\[audio\](.*?)\[\/audio\]/ism", 'tryoembed', $Text);
 261         }
 262
 263         // html5 video and audio
 264
 265
 266         $Text = preg_replace("/\[iframe\](.*?)\[\/iframe\]/ism", '<iframe src="$1" width="425" height="350"><a href="$1">$1</a></iframe>', $Text);
 267
 268
 269         // Youtube extensions
 270         if ($tryoembed) {
 271                 $Text = preg_replace_callback("/\[youtube\](https?:\/\/www.youtube.com\/watch\?v\=.*?)\[\/youtube\]/ism", 'tryoembed', $Text);
 272                 $Text = preg_replace_callback("/\[youtube\](www.youtube.com\/watch\?v\=.*?)\[\/youtube\]/ism", 'tryoembed', $Text);
 273                 $Text = preg_replace_callback("/\[youtube\](https?:\/\/youtu.be\/.*?)\[\/youtube\]/ism",'tryoembed',$Text);
 274         }
 275
 276         $Text = preg_replace("/\[youtube\]https?:\/\/www.youtube.com\/watch\?v\=(.*?)\[\/youtube\]/ism",'[youtube]$1[/youtube]',$Text);
 277         $Text = preg_replace("/\[youtube\]https?:\/\/www.youtube.com\/embed\/(.*?)\[\/youtube\]/ism",'[youtube]$1[/youtube]',$Text);
 278         $Text = preg_replace("/\[youtube\]https?:\/\/youtu.be\/(.*?)\[\/youtube\]/ism",'[youtube]$1[/youtube]',$Text);
 279
 280         $Text = preg_replace("/\[youtube\]([A-Za-z0-9\-_=]+)(.*?)\[\/youtube\]/ism", '<iframe width="425" height="350" src="http://www.youtube.com/embed/$1" frameborder="0" ></iframe>', $Text);
 281
 282
 283         if ($tryoembed) {
 284                 $Text = preg_replace_callback("/\[vimeo\](https?:\/\/player.vimeo.com\/video\/[0-9]+).*?\[\/vimeo\]/ism",'tryoembed',$Text);
 285                 $Text = preg_replace_callback("/\[vimeo\](https?:\/\/vimeo.com\/[0-9]+).*?\[\/vimeo\]/ism",'tryoembed',$Text);
 286         }
 287
 288         $Text = preg_replace("/\[vimeo\]https?:\/\/player.vimeo.com\/video\/([0-9]+)(.*?)\[\/vimeo\]/ism",'[vimeo]$1[/vimeo]',$Text);
 289         $Text = preg_replace("/\[vimeo\]https?:\/\/vimeo.com\/([0-9]+)(.*?)\[\/vimeo\]/ism",'[vimeo]$1[/vimeo]',$Text);
 290         $Text = preg_replace("/\[vimeo\]([0-9]+)(.*?)\[\/vimeo\]/ism", '<iframe width="425" height="350" src="http://player.vimeo.com/video/$1" frameborder="0" ></iframe>', $Text);
 291
 292 //      $Text = preg_replace("/\[youtube\](.*?)\[\/youtube\]/", '<object width="425" height="350" type="application/x-shockwave-flash" data="http://www.youtube.com/v/$1" ><param name="movie" value="http://www.youtube.com/v/$1"></param><!--[if IE]><embed src="http://www.youtube.com/v/$1" type="application/x-shockwave-flash" width="425" height="350" /><![endif]--></object>', $Text);
 293
 294
 295         // oembed tag
 296         $Text = oembed_bbcode2html($Text);
 297
 298         // If we found an event earlier, strip out all the event code and replace with a reformatted version.
 299
 300         if(x($ev,'desc') && x($ev,'start')) {
 301                 $sub = format_event_html($ev);
 302
 303                 $Text = preg_replace("/\[event\-description\](.*?)\[\/event\-description\]/ism",$sub,$Text);
 304                 $Text = preg_replace("/\[event\-start\](.*?)\[\/event\-start\]/ism",'',$Text);
 305                 $Text = preg_replace("/\[event\-finish\](.*?)\[\/event\-finish\]/ism",'',$Text);
 306                 $Text = preg_replace("/\[event\-location\](.*?)\[\/event\-location\]/ism",'',$Text);
 307                 $Text = preg_replace("/\[event\-adjust\](.*?)\[\/event\-adjust\]/ism",'',$Text);
 308         }
 309
 310         // Unhide all [noparse] contained bbtags unspacefying them
 311         // and triming the [noparse] tag.
 312
 313         $Text = preg_replace_callback("/\[noparse\](.*?)\[\/noparse\]/ism", 'bb_unspacefy_and_trim',$Text);
 314         $Text = preg_replace_callback("/\[nobb\](.*?)\[\/nobb\]/ism", 'bb_unspacefy_and_trim',$Text);
 315         $Text = preg_replace_callback("/\[pre\](.*?)\[\/pre\]/ism", 'bb_unspacefy_and_trim',$Text);
 316
 317
 318         $Text = preg_replace('/\[\&amp\;([#a-z0-9]+)\;\]/','&$1;',$Text);
 319
 320         // fix any escaped ampersands that may have been converted into links
 321         $Text = preg_replace("/\<(.*?)(src|href)=(.*?)\&amp\;(.*?)\>/ism",'<$1$2=$3&$4>',$Text);
 322         if(strlen($saved_image))
 323                 $Text = str_replace('[$#saved_image#$]','<img src="' . $saved_image .'" alt="' . t('Image/photo') . '" />',$Text);
 324
 325         call_hooks('bbcode',$Text);
 326
 327         return $Text;
 328 }
 329