]> git.mxchange.org Git - friendica.git/blobdiff - include/bb2diaspora.php
Just removing unused codelines
[friendica.git] / include / bb2diaspora.php
index ca0c961b371c365f575fcd9ffa0980c32884d1a7..7107c4913950f130e3638c7cb59a40293b386af3 100644 (file)
 <?php
 
 require_once("include/oembed.php");
-require_once('include/event.php');
-
+require_once("include/event.php");
+require_once("library/markdown.php");
+require_once("include/html2bbcode.php");
+require_once("include/bbcode.php");
+require_once("include/markdownify/markdownify.php");
 
 
+// we don't want to support a bbcode specific markdown interpreter
+// and the markdown library we have is pretty good, but provides HTML output.
+// So we'll use that to convert to HTML, then convert the HTML back to bbcode,
+// and then clean up a few Diaspora specific constructs.
 
 function diaspora2bb($s) {
 
-       $s = str_replace(array('\\**','\\__','\\*','\\_'), array('-^doublestar^-','-^doublescore-^','-^star^-','-^score^-'),$s);
-       $s = preg_replace("/\*\*\*(.+?)\*\*\*/", '[b][i]$1[/i][/b]', $s);
-       $s = preg_replace("/\_\_\_(.+?)\_\_\_/", '[b][i]$1[/i][/b]', $s);
-       $s = preg_replace("/\*\*(.+?)\*\*/", '[b]$1[/b]', $s);
-       $s = preg_replace("/\_\_(.+?)\_\_/", '[b]$1[/b]', $s);
-       $s = preg_replace("/\*(.+?)\*/", '[i]$1[/i]', $s);
-       $s = preg_replace("/\_(.+?)\_/", '[i]$1[/i]', $s);
-       $s = str_replace(array('-^doublestar^-','-^doublescore-^','-^star^-','-^score^-'), array('**','__','*','_'), $s);
-       $s = preg_replace('/\!\[(.+?)\]\((.+?)\)/','[img]$2[/img]',$s);
-       $s = preg_replace('/\[(.+?)\]\((.+?)\)/','[url=$2]$1[/url]',$s);
-       $s = preg_replace('/\@\{(.+?)\; (.+?)\@(.+?)\}/','@[url=https://$3/u/$2]$1[/url]',$s);
-
-
-       $s = escape_tags($s);
-       return $s;
-
-}
-
-
-function stripdcode_br_cb($s) {
-       return '[code]' . str_replace('<br />', '', $s[1]) . '[/code]';
-}
-
-
-       // BBcode 2 HTML was written by WAY2WEB.net
-       // extended to work with Mistpark/Friendika - Mike Macgirvin
-
-function bb2diaspora($Text,$preserve_nl = false) {
-
-       // Replace any html brackets with HTML Entities to prevent executing HTML or script
-       // Don't use strip_tags here because it breaks [url] search by replacing & with amp
-
-       $Text = str_replace("<", "&lt;", $Text);
-       $Text = str_replace(">", "&gt;", $Text);
-
-       // If we find any event code, turn it into an event.
-       // After we're finished processing the bbcode we'll 
-       // replace all of the event code with a reformatted version.
-
-       $ev = bbtoevent($Text);
-
-       if($preserve_nl)
-               $Text = str_replace(array("\n","\r"), array('',''),$Text);
-
-       // Set up the parameters for a URL search string
-       $URLSearchString = "^\[\]";
-       // Set up the parameters for a MAIL search string
-       $MAILSearchString = $URLSearchString;
+       $s = html_entity_decode($s,ENT_COMPAT,'UTF-8');
 
-       // Perform URL Search
+       // Simply remove cr.
+       $s = str_replace("\r","",$s);
 
-       // [img]pathtoimage[/img]
+       // <br/> is invalid. Replace it with the valid expression
+       $s = str_replace(array("<br/>", "</p>", "<p>", '<p dir="ltr">'),array("<br />", "<br />", "<br />", "<br />"),$s);
 
+       $s = preg_replace('/\@\{(.+?)\; (.+?)\@(.+?)\}/','@[url=https://$3/u/$2]$1[/url]',$s);
 
-       $Text = preg_replace("/\[url\]([$URLSearchString]*)\[\/url\]/ism", '[$1]($1)', $Text);
-       $Text = preg_replace("/\#\[url\=([$URLSearchString]*)\](.*?)\[\/url\]/ism", '[#$2]($1)', $Text);
-       $Text = preg_replace("/\[url\=([$URLSearchString]*)\](.*?)\[\/url\]/ism", '[$2]($1)', $Text);
-
-//     $Text = preg_replace("/\[img\](.*?)\[\/img\]/", t('Image/photo: ') . '$1', $Text);
-//     $Text = preg_replace("/\[img\](.*?)\[\/img\]/", t('image/photo'), $Text);
-
-       // Perform MAIL Search
-       $Text = preg_replace("(\[mail\]([$MAILSearchString]*)\[/mail\])", '[$1](mailto:$1)', $Text);
-       $Text = preg_replace("/\[mail\=([$MAILSearchString]*)\](.*?)\[\/mail\]/", '[$2](mailto:$1)', $Text);
-         
-       $Text = str_replace('*', '\\*', $Text);
-       $Text = str_replace('_', '\\_', $Text);
-
-       $Text = str_replace('`','\\`', $Text);
-
-       // Check for bold text
-       $Text = preg_replace("(\[b\](.*?)\[\/b\])is",'**$1**',$Text);
-
-       // Check for Italics text
-       $Text = preg_replace("(\[i\](.*?)\[\/i\])is",'_$1_',$Text);
-
-       // Check for Underline text
-//     $Text = preg_replace("(\[u\](.*?)\[\/u\])is",'<u>$1</u>',$Text);
-
-       // Check for strike-through text
-//     $Text = preg_replace("(\[s\](.*?)\[\/s\])is",'<strike>$1</strike>',$Text);
-
-       // Check for over-line text
-//     $Text = preg_replace("(\[o\](.*?)\[\/o\])is",'<span class="overline">$1</span>',$Text);
+       // Escaping the hash tags
+       $s = preg_replace('/\#([^\s\#])/','&#35;$1',$s);
 
-       // Check for colored text
-//     $Text = preg_replace("(\[color=(.*?)\](.*?)\[\/color\])is","<span style=\"color: $1;\">$2</span>",$Text);
+       $s = Markdown($s);
 
-       // Check for sized text
-//     $Text = preg_replace("(\[size=(.*?)\](.*?)\[\/size\])is","<span style=\"font-size: $1;\">$2</span>",$Text);
+       $s = str_replace('&#35;','#',$s);
 
-       // Check for list text
-//     $Text = preg_replace("/\[list\](.*?)\[\/list\]/is", '<ul class="listbullet">$1</ul>' ,$Text);
-//     $Text = preg_replace("/\[list=1\](.*?)\[\/list\]/is", '<ul class="listdecimal">$1</ul>' ,$Text);
-//     $Text = preg_replace("/\[list=i\](.*?)\[\/list\]/s",'<ul class="listlowerroman">$1</ul>' ,$Text);
-//     $Text = preg_replace("/\[list=I\](.*?)\[\/list\]/s", '<ul class="listupperroman">$1</ul>' ,$Text);
-//     $Text = preg_replace("/\[list=a\](.*?)\[\/list\]/s", '<ul class="listloweralpha">$1</ul>' ,$Text);
-//     $Text = preg_replace("/\[list=A\](.*?)\[\/list\]/s", '<ul class="listupperalpha">$1</ul>' ,$Text);
-//     $Text = preg_replace("/\[li\](.*?)\[\/li\]/s", '<li>$1</li>' ,$Text);
+       $s = html2bbcode($s);
 
-//     $Text = preg_replace("/\[td\](.*?)\[\/td\]/s", '<td>$1</td>' ,$Text);
-//     $Text = preg_replace("/\[tr\](.*?)\[\/tr\]/s", '<tr>$1</tr>' ,$Text);
-//     $Text = preg_replace("/\[table\](.*?)\[\/table\]/s", '<table>$1</table>' ,$Text);
+       // protect the recycle symbol from turning into a tag, but without unescaping angles and naked ampersands
+       $s = str_replace('&#x2672;',html_entity_decode('&#x2672;',ENT_QUOTES,'UTF-8'),$s);
 
-//     $Text = preg_replace("/\[table border=1\](.*?)\[\/table\]/s", '<table border="1" >$1</table>' ,$Text);
-//     $Text = preg_replace("/\[table border=0\](.*?)\[\/table\]/s", '<table border="0" >$1</table>' ,$Text);
+       // Convert everything that looks like a link to a link
+       $s = preg_replace("/([^\]\=]|^)(https?\:\/\/)([a-zA-Z0-9\:\/\-\?\&\;\.\=\_\~\#\%\$\!\+\,]+)/ism", '$1[url=$2$3]$2$3[/url]',$s);
 
-       
-//     $Text = str_replace("[*]", "<li>", $Text);
+       //$s = preg_replace("/([^\]\=]|^)(https?\:\/\/)(vimeo|youtu|www\.youtube|soundcloud)([a-zA-Z0-9\:\/\-\?\&\;\.\=\_\~\#\%\$\!\+\,]+)/ism", '$1[url=$2$3$4]$2$3$4[/url]',$s);
+       $s = bb_tag_preg_replace("/\[url\=?(.*?)\]https?:\/\/www.youtube.com\/watch\?v\=(.*?)\[\/url\]/ism",'[youtube]$2[/youtube]','url',$s);
+       $s = bb_tag_preg_replace("/\[url\=https?:\/\/www.youtube.com\/watch\?v\=(.*?)\].*?\[\/url\]/ism",'[youtube]$1[/youtube]','url',$s);
+       $s = bb_tag_preg_replace("/\[url\=?(.*?)\]https?:\/\/vimeo.com\/([0-9]+)(.*?)\[\/url\]/ism",'[vimeo]$2[/vimeo]','url',$s);
+       $s = bb_tag_preg_replace("/\[url\=https?:\/\/vimeo.com\/([0-9]+)\](.*?)\[\/url\]/ism",'[vimeo]$1[/vimeo]','url',$s);
+       // remove duplicate adjacent code tags
+       $s = preg_replace("/(\[code\])+(.*?)(\[\/code\])+/ism","[code]$2[/code]", $s);
 
-       // Check for font change text
-//     $Text = preg_replace("(\[font=(.*?)\](.*?)\[\/font\])","<span style=\"font-family: $1;\">$2</span>",$Text);
+       // Don't show link to full picture (until it is fixed)
+       $s = scale_external_images($s, false);
 
-       // Declare the format for [code] layout
+       return $s;
+}
 
-       $Text = preg_replace_callback("/\[code\](.*?)\[\/code\]/is",'stripdcode_br_cb',$Text);
+function bb2diaspora($Text,$preserve_nl = false, $fordiaspora = true) {
 
-//     $CodeLayout = '<code>$1</code>';
-       // Check for [code] text
-       $Text = preg_replace("/\[code\](.*?)\[\/code\]/is","```$1```", $Text);
+       $OriginalText = $Text;
 
+       // Since Diaspora is creating a summary for links, this function removes them before posting
+       if ($fordiaspora)
+               $Text = bb_remove_share_information($Text);
 
+       /**
+        * Transform #tags, strip off the [url] and replace spaces with underscore
+        */
+       $URLSearchString = "^\[\]";
+       $Text = preg_replace_callback("/#\[url\=([$URLSearchString]*)\](.*?)\[\/url\]/i", create_function('$match',
+               'return \'#\'. str_replace(\' \', \'_\', $match[2]);'
+       ), $Text);
 
 
-       // Declare the format for [quote] layout
-//     $QuoteLayout = '<blockquote>$1</blockquote>';                     
-       // Check for [quote] text
-//     $Text = preg_replace("/\[quote\](.*?)\[\/quote\]/is","$QuoteLayout", $Text);
-         
-       // Images
+       // Converting images with size parameters to simple images. Markdown doesn't know it.
+       $Text = preg_replace("/\[img\=([0-9]*)x([0-9]*)\](.*?)\[\/img\]/ism", '[img]$3[/img]', $Text);
 
-       // html5 video and audio
+       // Convert it to HTML - don't try oembed
+       if ($fordiaspora) {
+               $Text = bbcode($Text, $preserve_nl, false, 3);
 
-//     $Text = preg_replace("/\[video\](.*?)\[\/video\]/", '<video src="$1" controls="controls" width="425" height="350"><a href="$1">$1</a></video>', $Text);
+               // Add all tags that maybe were removed
+               if (preg_match_all("/#\[url\=([$URLSearchString]*)\](.*?)\[\/url\]/ism",$OriginalText, $tags)) {
+                       $tagline = "";
+                       foreach($tags[2] as $tag)
+                               if (!strpos($Text, "#".$tag))
+                                       $tagline .= "#".$tag." ";
 
-//     $Text = preg_replace("/\[audio\](.*?)\[\/audio\]/", '<audio src="$1" controls="controls"><a href="$1">$1</a></audio>', $Text);
+                       $Text = $Text."<br />".$tagline;
+               }
 
-//     $Text = preg_replace("/\[iframe\](.*?)\[\/iframe\]/", '<iframe src="$1" width="425" height="350"><a href="$1">$1</a></iframe>', $Text);
-         
-       // [img=widthxheight]image source[/img]
-//     $Text = preg_replace("/\[img\=([0-9]*)x([0-9]*)\](.*?)\[\/img\]/", '<img src="$3" style="height:{$2}px; width:{$1}px;" >', $Text);
+       } else {
+               $Text = bbcode($Text, $preserve_nl, false, 4);
 
-//     if (get_pconfig(local_user(), 'oembed', 'use_for_youtube' )==1){
-//             // use oembed for youtube links
-//             $Text = preg_replace("/\[youtube\]/",'[embed]',$Text); 
-//             $Text = preg_replace("/\[\/youtube\]/",'[/embed]',$Text); 
-//     } else {
-//             // Youtube extensions
- //       $Text = preg_replace("/\[youtube\]https?:\/\/www.youtube.com\/watch\?v\=(.*?)\[\/youtube\]/",'[youtube]$1[/youtube]',$Text); 
-  //      $Text = preg_replace("/\[youtube\]https?:\/\/youtu.be\/(.*?)\[\/youtube\]/",'[youtube]$1[/youtube]',$Text); 
-//             $Text = preg_replace("/\[youtube\](.*?)\[\/youtube\]/", '<iframe width="425" height="349" src="http://www.youtube.com/embed/$1" frameborder="0" allowfullscreen></iframe>', $Text);
-//     }
-//     $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);
+               // Libertree doesn't convert a harizontal rule if there isn't a linefeed
+               $Text = str_replace(array("<hr />", "<hr>"), array("<br /><hr />", "<br><hr>"), $Text);
+       }
 
+       // Now convert HTML to Markdown
+       $md = new Markdownify(false, false, false);
+       $Text = $md->parseString($Text);
 
+       // The Markdownify converter converts underscores '_' in URLs to '\_', which
+       // messes up the URL. Manually fix these
+       $count = 1;
+       $pos = bb_find_open_close($Text, '[', ']', $count);
+       while($pos !== false) {
+               $start = substr($Text, 0, $pos['start']);
+               $subject = substr($Text, $pos['start'], $pos['end'] - $pos['start'] + 1);
+               $end = substr($Text, $pos['end'] + 1);
 
-       // oembed tag
-       //      $Text = oembed_bbcode2html($Text);
+               $subject = str_replace('\_', '_', $subject);
+               $Text = $start . $subject . $end;
 
-       // If we found an event earlier, strip out all the event code and replace with a reformatted version.
+               $count++;
+               $pos = bb_find_open_close($Text, '[', ']', $count);
+       }
 
-       if(x($ev,'desc') && x($ev,'start')) {
+       // If the text going into bbcode() has a plain URL in it, i.e.
+       // with no [url] tags around it, it will come out of parseString()
+       // looking like: <http://url.com>, which gets removed by strip_tags().
+       // So take off the angle brackets of any such URL
+       $Text = preg_replace("/<http(.*?)>/is", "http$1", $Text);
 
-               $sub = format_event_diaspora($ev);
-       
-               $Text = preg_replace("/\[event\-description\](.*?)\[\/event\-description\]/is",$sub,$Text);
-               $Text = preg_replace("/\[event\-start\](.*?)\[\/event\-start\]/is",'',$Text);
-               $Text = preg_replace("/\[event\-finish\](.*?)\[\/event\-finish\]/is",'',$Text);
-               $Text = preg_replace("/\[event\-location\](.*?)\[\/event\-location\]/is",'',$Text);
-               $Text = preg_replace("/\[event\-adjust\](.*?)\[\/event\-adjust\]/is",'',$Text);
-       }
+       // Remove all unconverted tags
+       $Text = strip_tags($Text);
 
+       // Remove any leading or trailing whitespace, as this will mess up
+       // the Diaspora signature verification and cause the item to disappear
+       $Text = trim($Text);
 
-       
        call_hooks('bb2diaspora',$Text);
 
        return $Text;
 }
 
+function unescape_underscores_in_links($m) {
+       $y = str_replace('\\_','_', $m[2]);
+       return('[' . $m[1] . '](' . $y . ')');
+}
+
 function format_event_diaspora($ev) {
 
+       $a = get_app();
+
        if(! ((is_array($ev)) && count($ev)))
                return '';
 
        $bd_format = t('l F d, Y \@ g:i A') ; // Friday January 18, 2011 @ 8 AM
 
-       $o = 'Friendika event notification:' . "\n";
+       $o = 'Friendica event notification:' . "\n";
 
-       $o .= '**' . bb2diaspora($ev['desc']) .  '**' . "\n";
+       $o .= '**' . (($ev['summary']) ? bb2diaspora($ev['summary']) : bb2diaspora($ev['desc'])) .  '**' . "\n";
 
-       $o .= t('Starts:') . ' ' 
+       $o .= t('Starts:') . ' ' . '['
                . (($ev['adjust']) ? day_translate(datetime_convert('UTC', 'UTC', 
                        $ev['start'] , $bd_format ))
                        :  day_translate(datetime_convert('UTC', 'UTC', 
                        $ev['start'] , $bd_format)))
-               . "\n";
+               .  '](' . $a->get_baseurl() . '/localtime/?f=&time=' . urlencode(datetime_convert('UTC','UTC',$ev['start'])) . ")\n";
 
        if(! $ev['nofinish'])
-               $o .= t('Finishes:') . ' ' 
+               $o .= t('Finishes:') . ' ' . '[' 
                        . (($ev['adjust']) ? day_translate(datetime_convert('UTC', 'UTC', 
                                $ev['finish'] , $bd_format ))
                                :  day_translate(datetime_convert('UTC', 'UTC', 
                                $ev['finish'] , $bd_format )))
-                       . "\n";
+                       . '](' . $a->get_baseurl() . '/localtime/?f=&time=' . urlencode(datetime_convert('UTC','UTC',$ev['finish'])) . ")\n";
 
        if(strlen($ev['location']))
                $o .= t('Location:') . bb2diaspora($ev['location'])