+function common_linkify_mentions($profile_id, $text)
+{
+ $mentions = common_find_mentions($profile_id, $text);
+
+ // We need to go through in reverse order by position,
+ // so our positions stay valid despite our fudging with the
+ // string!
+
+ $points = array();
+
+ foreach ($mentions as $mention)
+ {
+ $points[$mention['position']] = $mention;
+ }
+
+ krsort($points);
+
+ foreach ($points as $position => $mention) {
+
+ $linkText = common_linkify_mention($mention);
+
+ $text = substr_replace($text, $linkText, $position, mb_strlen($mention['text']));
+ }
+
+ return $text;
+}
+
+function common_linkify_mention($mention)
+{
+ $output = null;
+
+ if (Event::handle('StartLinkifyMention', array($mention, &$output))) {
+
+ $xs = new XMLStringer(false);
+
+ $attrs = array('href' => $mention['url'],
+ 'class' => 'url');
+
+ if (!empty($mention['title'])) {
+ $attrs['title'] = $mention['title'];
+ }
+
+ $xs->elementStart('span', 'vcard');
+ $xs->elementStart('a', $attrs);
+ $xs->element('span', 'fn nickname', $mention['text']);
+ $xs->elementEnd('a');
+ $xs->elementEnd('span');
+
+ $output = $xs->getString();
+
+ Event::handle('EndLinkifyMention', array($mention, &$output));
+ }
+
+ return $output;
+}
+
+function common_find_mentions($profile_id, $text)
+{
+ $mentions = array();
+
+ $sender = Profile::staticGet('id', $profile_id);
+
+ if (empty($sender)) {
+ return $mentions;
+ }
+
+ if (Event::handle('StartFindMentions', array($sender, $text, &$mentions))) {
+
+ preg_match_all('/^T ([A-Z0-9]{1,64}) /',
+ $text,
+ $tmatches,
+ PREG_OFFSET_CAPTURE);
+
+ preg_match_all('/(?:^|\s+)@(['.NICKNAME_FMT.']{1,64})/',
+ $text,
+ $atmatches,
+ PREG_OFFSET_CAPTURE);
+
+ $matches = array_merge($tmatches[1], $atmatches[1]);
+
+ foreach ($matches as $match) {
+
+ $nickname = common_canonical_nickname($match[0]);
+ $mentioned = common_relative_profile($sender, $nickname);
+
+ if (!empty($mentioned)) {
+
+ $user = User::staticGet('id', $mentioned->id);
+
+ if ($user) {
+ $url = common_local_url('userbyid', array('id' => $user->id));
+ } else {
+ $url = $mentioned->profileurl;
+ }
+
+ $mention = array('mentioned' => array($mentioned),
+ 'text' => $match[0],
+ 'position' => $match[1],
+ 'url' => $url);
+
+ if (!empty($mentioned->fullname)) {
+ $mention['title'] = $mentioned->fullname;
+ }
+
+ $mentions[] = $mention;
+ }
+ }
+
+ // @#tag => mention of all subscriptions tagged 'tag'
+
+ preg_match_all('/(?:^|[\s\.\,\:\;]+)@#([\pL\pN_\-\.]{1,64})/',
+ $text,
+ $hmatches,
+ PREG_OFFSET_CAPTURE);
+
+ foreach ($hmatches[1] as $hmatch) {
+
+ $tag = common_canonical_tag($hmatch[0]);
+
+ $tagged = Profile_tag::getTagged($sender->id, $tag);
+
+ $url = common_local_url('subscriptions',
+ array('nickname' => $sender->nickname,
+ 'tag' => $tag));
+
+ $mentions[] = array('mentioned' => $tagged,
+ 'text' => $hmatch[0],
+ 'position' => $hmatch[1],
+ 'url' => $url);
+ }
+
+ Event::handle('EndFindMentions', array($sender, $text, &$mentions));
+ }
+
+ return $mentions;
+}
+