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Mention for Parsedown
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<?php | |
class MyParsedown extends \Parsedown | |
{ | |
function __construct() | |
{ | |
$this->InlineTypes['@'][]= 'UserMention'; | |
$this->inlineMarkerList .= '@'; | |
} | |
protected function inlineUserMention($Excerpt) | |
{ | |
if (preg_match('/\B@([a-zA-Z][\w-]+)/', $Excerpt['context'], $matches)) { | |
// Find user by username. You have do it something else. | |
$user = User::findByUsername($matches[1]); | |
if ($user) { | |
return [ | |
'extent' => strlen($matches[0]), | |
'element' => [ | |
'name' => 'a', | |
'text' => $matches[0], | |
'attributes' => [ | |
'href' => '/user/' . $user->id, //link to username profile | |
'class' => 'user-mention', //style class of url | |
], | |
], | |
]; | |
} else { | |
return [ | |
'markup' => $matches[0], | |
'extent' => strlen($matches[0]), | |
]; | |
} | |
} | |
} | |
public static function findMentions($text) | |
{ | |
$pattern = '/\B@([a-zA-Z][\w-]+)/'; | |
if (preg_match_all($pattern, $text)) { | |
$text = str_replace(["\r\n", "\r"], "\n", $text); | |
$text = trim($text, "\n"); | |
$lines = explode("\n", $text); | |
$mentions = []; | |
$isBlockCode = false; | |
foreach ($lines as $line) { | |
if (empty($line)) { | |
continue; | |
} | |
if (($l = $line[0]) === '`' && strncmp($line, '```', 3) === 0 || $l === '~' && strncmp($line, '~~~', 3) === 0) { | |
if ($isBlockCode === false) { | |
$isBlockCode = true; | |
} else { | |
$isBlockCode = false; | |
} | |
continue; | |
} elseif ($isBlockCode === true) { | |
continue; | |
} elseif (($l = $line[0]) === ' ' && $line[1] === ' ' && $line[2] === ' ' && $line[3] === ' ' || $l === "\t") { | |
continue; | |
} elseif (preg_match('/^`(.+?)`/s', $line)) { | |
continue; | |
} else { | |
if (preg_match_all($pattern, $line, $matches)) { | |
$mentions = array_merge($mentions, $matches[1]); | |
} | |
} | |
} | |
return array_unique($mentions); | |
} | |
return null; | |
} | |
} |
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