+
+ $parts = parse_url($url);
+ if (!isset($parts['scheme'])) {
+ return $match[0];
+ }
+
+ return style_url_for_mastodon($url);
+}
+
+/**
+ * @brief Converts [url] BBCodes in a format that looks fine on Mastodon and GNU Social.
+ * @param string $url URL that is about to be reformatted
+ * @return string reformatted link including HTML codes
+ */
+function style_url_for_mastodon($url) {
+ $styled_url = $url;
+
+ $parts = parse_url($url);
+ $scheme = $parts['scheme'].'://';
+ $styled_url = str_replace($scheme, '', $styled_url);
+
+ $html = '<a href="%s" class="attachment" rel="nofollow noopener" target="_blank">'.
+ '<span class="invisible">%s</span>';
+
+ if (strlen($styled_url) > 30) {
+ $html .= '<span class="ellipsis">%s</span>'.
+ '<span class="invisible">%s</span></a>';
+
+ $ellipsis = substr($styled_url, 0, 30);
+ $rest = substr($styled_url, 30);
+ return sprintf($html, $url, $scheme, $ellipsis, $rest);
+ } else {
+ $html .= '%s</a>';
+ return sprintf($html, $url, $scheme, $styled_url);
+ }
+}
+
+function stripcode_br_cb($s) {
+ return '[code]' . str_replace('<br />', '', $s[1]) . '[/code]';