tag and mention handling in private mail (which required refactoring the bbcode cleanup stuff in mod_item)

include/text.php

@@ -3061,4 +3061,50 @@ function create_table_from_array($table, $arr) {
 	}
 
 	return $r;
-}
+}
+
+
+
+function cleanup_bbcode($body) {
+
+
+	/**
+	 * fix naked links by passing through a callback to see if this is a hubzilla site
+	 * (already known to us) which will get a zrl, otherwise link with url, add bookmark tag to both.
+	 * First protect any url inside certain bbcode tags so we don't double link it.
+	 */
+
+	$body = preg_replace_callback('/\[code(.*?)\[\/(code)\]/ism','\red_escape_codeblock',$body);
+	$body = preg_replace_callback('/\[url(.*?)\[\/(url)\]/ism','\red_escape_codeblock',$body);
+	$body = preg_replace_callback('/\[zrl(.*?)\[\/(zrl)\]/ism','\red_escape_codeblock',$body);
+
+
+	$body = preg_replace_callback("/([^\]\='".'"'."\/]|^|\#\^)(https?\:\/\/[a-zA-Z0-9\:\/\-\?\&\;\.\=\@\_\~\#\%\$\!\\
++\,\(\)]+)/ism", 'nakedoembed', $body);
+	$body = preg_replace_callback("/([^\]\='".'"'."\/]|^|\#\^)(https?\:\/\/[a-zA-Z0-9\:\/\-\?\&\;\.\=\@\_\~\#\%\$\!\\
++\,\(\)]+)/ism", '\red_zrl_callback', $body);
+
+	$body = preg_replace_callback('/\[\$b64zrl(.*?)\[\/(zrl)\]/ism','\red_unescape_codeblock',$body);
+	$body = preg_replace_callback('/\[\$b64url(.*?)\[\/(url)\]/ism','\red_unescape_codeblock',$body);
+	$body = preg_replace_callback('/\[\$b64code(.*?)\[\/(code)\]/ism','\red_unescape_codeblock',$body);
+
+
+	// fix any img tags that should be zmg
+
+	$body = preg_replace_callback('/\[img(.*?)\](.*?)\[\/img\]/ism','\red_zrlify_img_callback',$body);
+
+
+	$body = bb_translate_video($body);
+
+	/**
+	 * Fold multi-line [code] sequences
+	 */
+
+	$body = preg_replace('/\[\/code\]\s*\[code\]/ism',"\n",$body);
+
+	$body = scale_external_images($body,false);
+
+
+	return $body;
+
+}