mirror of
https://github.com/friendica/friendica
synced 2024-12-25 02:00:17 +00:00
265 lines
10 KiB
PHP
265 lines
10 KiB
PHP
<?php
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require_once("include/oembed.php");
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require_once('include/event.php');
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require_once('library/markdown.php');
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require_once('include/html2bbcode.php');
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// we don't want to support a bbcode specific markdown interpreter
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// and the markdown library we have is pretty good, but provides HTML output.
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// So we'll use that to convert to HTML, then convert the HTML back to bbcode,
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// and then clean up a few Diaspora specific constructs.
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function diaspora2bb($s) {
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// for testing purposes: Collect raw markdown articles
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// $file = tempnam("/tmp/friendica/", "markdown");
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// file_put_contents($file, $s);
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$s = html_entity_decode($s,ENT_COMPAT,'UTF-8');
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// Too many new lines. So deactivated the following line
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// $s = str_replace("\r","\n",$s);
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// Simply remove cr.
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$s = str_replace("\r","",$s);
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// <br/> is invalid. Replace it with the valid expression
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$s = str_replace("<br/>","<br />",$s);
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$s = preg_replace('/\@\{(.+?)\; (.+?)\@(.+?)\}/','@[url=https://$3/u/$2]$1[/url]',$s);
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// Escaping the hash tags - doesn't always seem to work
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// $s = preg_replace('/\#([^\s\#])/','\\#$1',$s);
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// This seems to work
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$s = preg_replace('/\#([^\s\#])/','#$1',$s);
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$s = Markdown($s);
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$s = str_replace('#','#',$s);
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$s = str_replace("\n",'<br />',$s);
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$s = html2bbcode($s);
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// $s = str_replace('*','*',$s);
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// Convert everything that looks like a link to a link
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$s = preg_replace("/([^\]\=]|^)(https?\:\/\/)([a-zA-Z0-9\:\/\-\?\&\;\.\=\_\~\#\%\$\!\+\,]+)/ism", '$1[url=$2$3]$2$3[/url]',$s);
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//$s = preg_replace("/([^\]\=]|^)(https?\:\/\/)(vimeo|youtu|www\.youtube|soundcloud)([a-zA-Z0-9\:\/\-\?\&\;\.\=\_\~\#\%\$\!\+\,]+)/ism", '$1[url=$2$3$4]$2$3$4[/url]',$s);
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$s = preg_replace("/\[url\=?(.*?)\]https?:\/\/www.youtube.com\/watch\?v\=(.*?)\[\/url\]/ism",'[youtube]$2[/youtube]',$s);
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$s = preg_replace("/\[url\=https?:\/\/www.youtube.com\/watch\?v\=(.*?)\].*?\[\/url\]/ism",'[youtube]$1[/youtube]',$s);
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$s = preg_replace("/\[url\=?(.*?)\]https?:\/\/vimeo.com\/([0-9]+)(.*?)\[\/url\]/ism",'[vimeo]$2[/vimeo]',$s);
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$s = preg_replace("/\[url\=https?:\/\/vimeo.com\/([0-9]+)\](.*?)\[\/url\]/ism",'[vimeo]$1[/vimeo]',$s);
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// remove duplicate adjacent code tags
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$s = preg_replace("/(\[code\])+(.*?)(\[\/code\])+/ism","[code]$2[/code]", $s);
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// Don't show link to full picture (until it is fixed)
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$s = scale_external_images($s, false);
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return $s;
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}
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function stripdcode_br_cb($s) {
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return '[code]' . str_replace('<br />', "\n\t", $s[1]) . '[/code]';
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}
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function bb2diaspora($Text,$preserve_nl = false) {
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$ev = bbtoevent($Text);
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// Replace any html brackets with HTML Entities to prevent executing HTML or script
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// Don't use strip_tags here because it breaks [url] search by replacing & with amp
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$Text = str_replace("<", "<", $Text);
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$Text = str_replace(">", ">", $Text);
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// If we find any event code, turn it into an event.
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// After we're finished processing the bbcode we'll
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// replace all of the event code with a reformatted version.
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if($preserve_nl)
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$Text = str_replace(array("\n","\r"), array('',''),$Text);
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// Set up the parameters for a URL search string
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$URLSearchString = "^\[\]";
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// Set up the parameters for a MAIL search string
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$MAILSearchString = $URLSearchString;
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// Perform URL Search
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// [img]pathtoimage[/img]
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// the following was added on 10-January-2012 due to an inability of Diaspora's
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// new javascript markdown processor to handle links with images as the link "text"
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// It is not optimal and may be removed if this ability is restored in the future
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$Text = preg_replace("/\[url\=([$URLSearchString]*)\]\[img\](.*?)\[\/img\]\[\/url\]/ism",
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'' . "\n" . '[' . t('link') . '](' . '$1' . ')', $Text);
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$Text = preg_replace("/\[bookmark\]([$URLSearchString]*)\[\/bookmark\]/ism", '[$1]($1)', $Text);
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$Text = preg_replace("/\[bookmark\=([$URLSearchString]*)\](.*?)\[\/bookmark\]/ism", '[$2]($1)', $Text);
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$Text = preg_replace("/\[url\]([$URLSearchString]*)\[\/url\]/ism", '[$1]($1)', $Text);
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$Text = preg_replace("/\#\[url\=([$URLSearchString]*)\](.*?)\[\/url\]/ism", '[#$2]($1)', $Text);
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$Text = preg_replace("/\[url\=([$URLSearchString]*)\](.*?)\[\/url\]/ism", '[$2]($1)', $Text);
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$Text = preg_replace("/\[img\](.*?)\[\/img\]/", '', $Text);
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$Text = preg_replace("/\[img\=(.*?)\](.*?)\[\/img\]/", '', $Text);
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// Perform MAIL Search
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$Text = preg_replace("(\[mail\]([$MAILSearchString]*)\[/mail\])", '[$1](mailto:$1)', $Text);
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$Text = preg_replace("/\[mail\=([$MAILSearchString]*)\](.*?)\[\/mail\]/", '[$2](mailto:$1)', $Text);
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$Text = str_replace('*', '\\*', $Text);
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$Text = str_replace('_', '\\_', $Text);
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$Text = str_replace('`','\\`', $Text);
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// Check for bold text
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$Text = preg_replace("(\[b\](.*?)\[\/b\])is",'**$1**',$Text);
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// Check for Italics text
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$Text = preg_replace("(\[i\](.*?)\[\/i\])is",'_$1_',$Text);
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// Check for Underline text
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// $Text = preg_replace("(\[u\](.*?)\[\/u\])is",'<u>$1</u>',$Text);
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// Check for strike-through text
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// $Text = preg_replace("(\[s\](.*?)\[\/s\])is",'<strike>$1</strike>',$Text);
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// Check for over-line text
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// $Text = preg_replace("(\[o\](.*?)\[\/o\])is",'<span class="overline">$1</span>',$Text);
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// Check for colored text
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// $Text = preg_replace("(\[color=(.*?)\](.*?)\[\/color\])is","<span style=\"color: $1;\">$2</span>",$Text);
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// Check for sized text
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// $Text = preg_replace("(\[size=(.*?)\](.*?)\[\/size\])is","<span style=\"font-size: $1;\">$2</span>",$Text);
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// Check for list text
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// $Text = preg_replace("/\[list\](.*?)\[\/list\]/is", '<ul class="listbullet">$1</ul>' ,$Text);
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// $Text = preg_replace("/\[list=1\](.*?)\[\/list\]/is", '<ul class="listdecimal">$1</ul>' ,$Text);
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// $Text = preg_replace("/\[list=i\](.*?)\[\/list\]/s",'<ul class="listlowerroman">$1</ul>' ,$Text);
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// $Text = preg_replace("/\[list=I\](.*?)\[\/list\]/s", '<ul class="listupperroman">$1</ul>' ,$Text);
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// $Text = preg_replace("/\[list=a\](.*?)\[\/list\]/s", '<ul class="listloweralpha">$1</ul>' ,$Text);
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// $Text = preg_replace("/\[list=A\](.*?)\[\/list\]/s", '<ul class="listupperalpha">$1</ul>' ,$Text);
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// $Text = preg_replace("/\[li\](.*?)\[\/li\]/s", '<li>$1</li>' ,$Text);
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// $Text = preg_replace("/\[td\](.*?)\[\/td\]/s", '<td>$1</td>' ,$Text);
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// $Text = preg_replace("/\[tr\](.*?)\[\/tr\]/s", '<tr>$1</tr>' ,$Text);
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// $Text = preg_replace("/\[table\](.*?)\[\/table\]/s", '<table>$1</table>' ,$Text);
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// $Text = preg_replace("/\[table border=1\](.*?)\[\/table\]/s", '<table border="1" >$1</table>' ,$Text);
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// $Text = preg_replace("/\[table border=0\](.*?)\[\/table\]/s", '<table border="0" >$1</table>' ,$Text);
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// $Text = str_replace("[*]", "<li>", $Text);
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// Check for font change text
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// $Text = preg_replace("(\[font=(.*?)\](.*?)\[\/font\])","<span style=\"font-family: $1;\">$2</span>",$Text);
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$Text = preg_replace_callback("/\[code\](.*?)\[\/code\]/is",'stripdcode_br_cb',$Text);
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// Check for [code] text
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$Text = preg_replace("/(\[code\])+(.*?)(\[\/code\])+/is","\t$2\n", $Text);
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// Declare the format for [quote] layout
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// $QuoteLayout = '<blockquote>$1</blockquote>';
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// Check for [quote] text
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$Text = preg_replace("/\[quote\](.*?)\[\/quote\]/is",">$1\n\n", $Text);
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// Images
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// html5 video and audio
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$Text = preg_replace("/\[video\](.*?)\[\/video\]/", '$1', $Text);
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$Text = preg_replace("/\[audio\](.*?)\[\/audio\]/", '$1', $Text);
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// $Text = preg_replace("/\[iframe\](.*?)\[\/iframe\]/", '<iframe src="$1" width="425" height="350"><a href="$1">$1</a></iframe>', $Text);
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// [img=widthxheight]image source[/img]
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// $Text = preg_replace("/\[img\=([0-9]*)x([0-9]*)\](.*?)\[\/img\]/", '<img src="$3" style="height:{$2}px; width:{$1}px;" >', $Text);
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$Text = preg_replace("/\[youtube\]https?:\/\/www.youtube.com\/watch\?v\=(.*?)\[\/youtube\]/ism",'http://www.youtube.com/watch?v=$1',$Text);
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$Text = preg_replace("/\[youtube\]https?:\/\/www.youtube.com\/embed\/(.*?)\[\/youtube\]/ism",'http://www.youtube.com/watch?v=$1',$Text);
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$Text = preg_replace("/\[youtube\]https?:\/\/youtu.be\/(.*?)\[\/youtube\]/ism",'http://www.youtube.com/watch?v=$1',$Text);
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$Text = preg_replace("/\[youtube\]([A-Za-z0-9\-_=]+)(.*?)\[\/youtube\]/ism", 'http://www.youtube.com/watch?v=$1', $Text);
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$Text = preg_replace("/\[vimeo\]https?:\/\/player.vimeo.com\/video\/([0-9]+)(.*?)\[\/vimeo\]/ism",'http://vimeo.com/$1',$Text);
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$Text = preg_replace("/\[vimeo\]https?:\/\/vimeo.com\/([0-9]+)(.*?)\[\/vimeo\]/ism",'http://vimeo.com/$1',$Text);
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$Text = preg_replace("/\[vimeo\]([0-9]+)(.*?)\[\/vimeo\]/ism", 'http://vimeo.com/$1',$Text);
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$Text = str_replace('[nosmile]','',$Text);
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// oembed tag
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// $Text = oembed_bbcode2html($Text);
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// If we found an event earlier, strip out all the event code and replace with a reformatted version.
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if(x($ev,'desc') && x($ev,'start')) {
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$sub = format_event_diaspora($ev);
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$Text = preg_replace("/\[event\-description\](.*?)\[\/event\-description\]/is",$sub,$Text);
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$Text = preg_replace("/\[event\-start\](.*?)\[\/event\-start\]/is",'',$Text);
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$Text = preg_replace("/\[event\-finish\](.*?)\[\/event\-finish\]/is",'',$Text);
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$Text = preg_replace("/\[event\-location\](.*?)\[\/event\-location\]/is",'',$Text);
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$Text = preg_replace("/\[event\-adjust\](.*?)\[\/event\-adjust\]/is",'',$Text);
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}
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$Text = preg_replace("/\<(.*?)(src|href)=(.*?)\&\;(.*?)\>/ism",'<$1$2=$3&$4>',$Text);
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$Text = preg_replace('/\[(.*?)\]\((.*?)\\\\_(.*?)\)/ism','[$1]($2_$3)',$Text);
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call_hooks('bb2diaspora',$Text);
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return $Text;
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}
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function format_event_diaspora($ev) {
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$a = get_app();
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if(! ((is_array($ev)) && count($ev)))
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return '';
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$bd_format = t('l F d, Y \@ g:i A') ; // Friday January 18, 2011 @ 8 AM
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$o = 'Friendica event notification:' . "\n";
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$o .= '**' . bb2diaspora($ev['desc']) . '**' . "\n";
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$o .= t('Starts:') . ' ' . '['
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. (($ev['adjust']) ? day_translate(datetime_convert('UTC', 'UTC',
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$ev['start'] , $bd_format ))
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: day_translate(datetime_convert('UTC', 'UTC',
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$ev['start'] , $bd_format)))
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. '](' . $a->get_baseurl() . '/localtime/?f=&time=' . urlencode(datetime_convert('UTC','UTC',$ev['start'])) . ")\n";
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if(! $ev['nofinish'])
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$o .= t('Finishes:') . ' ' . '['
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. (($ev['adjust']) ? day_translate(datetime_convert('UTC', 'UTC',
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$ev['finish'] , $bd_format ))
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: day_translate(datetime_convert('UTC', 'UTC',
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$ev['finish'] , $bd_format )))
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. '](' . $a->get_baseurl() . '/localtime/?f=&time=' . urlencode(datetime_convert('UTC','UTC',$ev['finish'])) . ")\n";
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if(strlen($ev['location']))
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$o .= t('Location:') . bb2diaspora($ev['location'])
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. "\n";
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$o .= "\n";
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return $o;
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}
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