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<?php
/**
* Injector that converts e-mails to actual links.
*/
class HTMLPurifier_Injector_LinkifyEmail extends HTMLPurifier_Injector
{
public $name = 'LinkifyEmail';
public $needed = ['a' => ['href']];
public function handleText(&$token) {
if (!$this->allowsElement('a')) return;
if (strpos($token->data, '@') === false) {
// our really quick heuristic failed, abort
return;
}
// e-mail regex comes from Drupal 7, see http://api.drupal.org/_filter_url, adapted to match only mails with tld part
$bits = preg_split('#([A-Za-z0-9._-]+@(?:[A-Za-z0-9._+-]+\.[A-Za-z]{2,64}\b))#S', $token->data, -1, PREG_SPLIT_DELIM_CAPTURE);
$token = [];
// $i = index
// $c = count
// $l = is link
for ($i = 0, $c = count($bits), $l = false; $i < $c; $i++, $l = !$l) {
if (!$l) {
if ($bits[$i] === '') continue;
$token[] = new HTMLPurifier_Token_Text($bits[$i]);
} else {
$token[] = new HTMLPurifier_Token_Start('a', ['href' => 'mailto:' . $bits[$i]]);
$token[] = new HTMLPurifier_Token_Text($bits[$i]);
$token[] = new HTMLPurifier_Token_End('a');
}
}
}
}
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