This directive turns on linkification, auto-linking http, ftp and
https URLs. a tags with the href attribute
must be allowed. This directive has been available since 2.0.1.
');
/**
* Injector that converts http, https and ftp text URLs to actual links.
*/
class HTMLPurifier_Injector_Linkify extends HTMLPurifier_Injector
{
var $name = 'Linkify';
var $needed = array('a' => array('href'));
function handleText(&$token) {
if (!$this->allowsElement('a')) return;
if (strpos($token->data, '://') === false) {
// our really quick heuristic failed, abort
// this may not work so well if we want to match things like
// "google.com", but then again, most people don't
return;
}
// there is/are URL(s). Let's split the string:
// Note: this regex is extremely permissive
$bits = preg_split('#((?:https?|ftp)://[^\s\'"<>()]+)#S', $token->data, -1, PREG_SPLIT_DELIM_CAPTURE);
$token = array();
// $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', array('href' => $bits[$i]));
$token[] = new HTMLPurifier_Token_Text($bits[$i]);
$token[] = new HTMLPurifier_Token_End('a');
}
}
}
}