+
+ /**
+ * @brief Callback function to replace a Diaspora style mention in a mention for Friendica
+ *
+ * @param array $match Matching values for the callback
+ * [1] = mention type (@ or !)
+ * [2] = name (optional)
+ * [3] = address
+ * @return string Replaced mention
+ * @throws \Friendica\Network\HTTPException\InternalServerErrorException
+ * @throws \ImagickException
+ */
+ private static function diasporaMention2BBCodeCallback($match)
+ {
+ if ($match[3] == '') {
+ return;
+ }
+
+ $data = Contact::getDetailsByAddr($match[3]);
+
+ if (empty($data)) {
+ return;
+ }
+
+ $name = $match[2];
+
+ if ($name == '') {
+ $name = $data['name'];
+ }
+
+ return $match[1] . '[url=' . $data['url'] . ']' . $name . '[/url]';
+ }
+
+ /*
+ * we don't want to support a bbcode specific markdown interpreter
+ * and the markdown library we have is pretty good, but provides HTML output.
+ * So we'll use that to convert to HTML, then convert the HTML back to bbcode,
+ * and then clean up a few Diaspora specific constructs.
+ */
+ public static function toBBCode($s)
+ {
+ $s = html_entity_decode($s, ENT_COMPAT, 'UTF-8');
+
+ // The parser cannot handle paragraphs correctly
+ $s = str_replace(['</p>', '<p>', '<p dir="ltr">'], ['<br>', '<br>', '<br>'], $s);
+
+ // Escaping hashtags that could be titles
+ $s = preg_replace('/^\#([^\s\#])/im', '\#$1', $s);
+
+ $s = self::convert($s);
+
+ $regexp = "/([@!])\{(?:([^\}]+?); ?)?([^\} ]+)\}/";
+ $s = preg_replace_callback($regexp, ['self', 'diasporaMention2BBCodeCallback'], $s);
+
+ $s = HTML::toBBCode($s);
+
+ // protect the recycle symbol from turning into a tag, but without unescaping angles and naked ampersands
+ $s = str_replace('♲', html_entity_decode('♲', ENT_QUOTES, 'UTF-8'), $s);
+
+ // 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]', $s);
+
+ //$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 = BBCode::pregReplaceInTag('/\[url\=?(.*?)\]https?:\/\/www.youtube.com\/watch\?v\=(.*?)\[\/url\]/ism', '[youtube]$2[/youtube]', 'url', $s);
+ $s = BBCode::pregReplaceInTag('/\[url\=https?:\/\/www.youtube.com\/watch\?v\=(.*?)\].*?\[\/url\]/ism' , '[youtube]$1[/youtube]', 'url', $s);
+ $s = BBCode::pregReplaceInTag('/\[url\=?(.*?)\]https?:\/\/vimeo.com\/([0-9]+)(.*?)\[\/url\]/ism' , '[vimeo]$2[/vimeo]' , 'url', $s);
+ $s = BBCode::pregReplaceInTag('/\[url\=https?:\/\/vimeo.com\/([0-9]+)\](.*?)\[\/url\]/ism' , '[vimeo]$1[/vimeo]' , 'url', $s);
+
+ // remove duplicate adjacent code tags
+ $s = preg_replace('/(\[code\])+(.*?)(\[\/code\])+/ism', '[code]$2[/code]', $s);
+
+ // Don't show link to full picture (until it is fixed)
+ $s = BBCode::scaleExternalImages($s, false);
+
+ return $s;
+ }