friendica/include/bb2diaspora.php

<?php

require_once("include/oembed.php");
require_once('include/event.php');




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($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;

	// Perform URL Search

	// [img]pathtoimage[/img]


	$Text = preg_replace("/\[url\]([$URLSearchString]*)\[\/url\]/", '[$1]($1)', $Text);
	$Text = preg_replace("(\[url\=([$URLSearchString]*)\](.*?)\[/url\])", '[$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);

	// Check for colored text
//	$Text = preg_replace("(\[color=(.*?)\](.*?)\[\/color\])is","<span style=\"color: $1;\">$2</span>",$Text);

	// Check for sized text
//	$Text = preg_replace("(\[size=(.*?)\](.*?)\[\/size\])is","<span style=\"font-size: $1;\">$2</span>",$Text);

	// 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);

//	$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);

//	$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);

	
//	$Text = str_replace("[*]", "<li>", $Text);

	// Check for font change text
//	$Text = preg_replace("(\[font=(.*?)\](.*?)\[\/font\])","<span style=\"font-family: $1;\">$2</span>",$Text);

	// Declare the format for [code] layout

	$Text = preg_replace_callback("/\[code\](.*?)\[\/code\]/is",'stripdcode_br_cb',$Text);

//	$CodeLayout = '<code>$1</code>';
	// Check for [code] text
	$Text = preg_replace("/\[code\](.*?)\[\/code\]/is","```$1```", $Text);




	// Declare the format for [quote] layout
//	$QuoteLayout = '<blockquote>$1</blockquote>';                     
	// Check for [quote] text
//	$Text = preg_replace("/\[quote\](.*?)\[\/quote\]/is","$QuoteLayout", $Text);
         
	// Images

	// html5 video and audio

//	$Text = preg_replace("/\[video\](.*?)\[\/video\]/", '<video src="$1" controls="controls" width="425" height="350"><a href="$1">$1</a></video>', $Text);

//	$Text = preg_replace("/\[audio\](.*?)\[\/audio\]/", '<audio src="$1" controls="controls"><a href="$1">$1</a></audio>', $Text);

//	$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);

//	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);



	// oembed tag
//	$Text = oembed_bbcode2html($Text);

	// If we found an event earlier, strip out all the event code and replace with a reformatted version.

//	if(x($ev,'desc') && x($ev,'start')) {
//		$sub = format_event_html($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);
//	}


	
	call_hooks('bb2diaspora',$Text);

	return $Text;
}