get('CurrentNesting');
// this snippet could be factored out
$definition = $config->getHTMLDefinition();
if (!empty($current_nesting)) {
$parent_token = array_pop($current_nesting);
$current_nesting[] = $parent_token;
$parent = $definition->info[$parent_token->name];
} else {
$parent = $definition->info_parent_def;
}
if (!isset($parent->child->elements['a']) || isset($parent->excludes['a'])) {
// parent element does not allow link elements, don't bother
return;
}
if (strpos($token->data, '://') === false) {
// our really quick heuristic failed, abort
// this may not work so well if we want to match things like
// "google.com"
return;
}
// there is/are URL(s). Let's split the string:
$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');
}
}
}
}
?>