+
+ /**
+ * @brief Callback function to replace a Friendica style mention in a mention for Diaspora
+ *
+ * @param array $match Matching values for the callback
+ * @return string Replaced mention
+ */
+ private static function bbCodeMention2DiasporaCallback($match)
+ {
+ $contact = Contact::getDetailsByURL($match[3]);
+
+ if (empty($contact['addr'])) {
+ $contact = Probe::uri($match[3]);
+ }
+
+ if (empty($contact['addr'])) {
+ return $match[0];
+ }
+
+ $mention = '@{' . $match[2] . '; ' . $contact['addr'] . '}';
+ return $mention;
+ }
+
+ /**
+ * @brief Converts a BBCode text into Markdown
+ *
+ * This function converts a BBCode item body to be sent to Markdown-enabled
+ * systems like Diaspora and Libertree
+ *
+ * @param string $text
+ * @param bool $for_diaspora Diaspora requires more changes than Libertree
+ * @return string
+ */
+ public static function toMarkdown($text, $for_diaspora = true)
+ {
+ $a = self::getApp();
+
+ $original_text = $text;
+
+ // Since Diaspora is creating a summary for links, this function removes them before posting
+ if ($for_diaspora) {
+ $text = self::removeShareInformation($text);
+ }
+
+ /**
+ * Transform #tags, strip off the [url] and replace spaces with underscore
+ */
+ $url_search_string = "^\[\]";
+ $text = preg_replace_callback("/#\[url\=([$url_search_string]*)\](.*?)\[\/url\]/i",
+ function ($matches) {
+ return '#' . str_replace(' ', '_', $matches[2]);
+ },
+ $text
+ );
+
+ // 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]', $text);
+
+ // Convert it to HTML - don't try oembed
+ if ($for_diaspora) {
+ $text = self::convert($text, false, 3);
+
+ // Add all tags that maybe were removed
+ if (preg_match_all("/#\[url\=([$url_search_string]*)\](.*?)\[\/url\]/ism", $original_text, $tags)) {
+ $tagline = "";
+ foreach ($tags[2] as $tag) {
+ $tag = html_entity_decode($tag, ENT_QUOTES, 'UTF-8');
+ if (!strpos(html_entity_decode($text, ENT_QUOTES, 'UTF-8'), '#' . $tag)) {
+ $tagline .= '#' . $tag . ' ';
+ }
+ }
+ $text = $text . " " . $tagline;
+ }
+ } else {
+ $text = self::convert($text, false, 4);
+ }
+
+ // mask some special HTML chars from conversation to markdown
+ $text = str_replace(['<', '>', '&'], ['&_lt_;', '&_gt_;', '&_amp_;'], $text);
+
+ // If a link is followed by a quote then there should be a newline before it
+ // Maybe we should make this newline at every time before a quote.
+ $text = str_replace(["</a><blockquote>"], ["</a><br><blockquote>"], $text);
+
+ $stamp1 = microtime(true);
+
+ // Now convert HTML to Markdown
+ $text = HTML::toMarkdown($text);
+
+ // unmask the special chars back to HTML
+ $text = str_replace(['&\_lt\_;', '&\_gt\_;', '&\_amp\_;'], ['<', '>', '&'], $text);
+
+ $a->saveTimestamp($stamp1, "parser");
+
+ // Libertree has a problem with escaped hashtags.
+ $text = str_replace(['\#'], ['#'], $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);
+
+ if ($for_diaspora) {
+ $url_search_string = "^\[\]";
+ $text = preg_replace_callback(
+ "/([@]\[(.*?)\])\(([$url_search_string]*?)\)/ism",
+ ['self', 'bbCodeMention2DiasporaCallback'],
+ $text
+ );
+ }
+
+ Addon::callHooks('bb2diaspora', $text);
+
+ return $text;
+ }