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<?php defined('SYSPATH') or die('No direct script access.');
/**
* UTF8::strspn
*
* @package Kohana
* @author Kohana Team
* @copyright (c) 2007-2012 Kohana Team
* @copyright (c) 2005 Harry Fuecks
* @license http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt
*/
function _strspn($str, $mask, $offset = NULL, $length = NULL)
{
if ($str == '' OR $mask == '')
return 0;
if (UTF8::is_ascii($str) AND UTF8::is_ascii($mask))
return ($offset === NULL) ? strspn($str, $mask) : (($length === NULL) ? strspn($str, $mask, $offset) : strspn($str, $mask, $offset, $length));
if ($offset !== NULL OR $length !== NULL)
{
$str = UTF8::substr($str, $offset, $length);
}
// Escape these characters: - [ ] . : \ ^ /
// The . and : are escaped to prevent possible warnings about POSIX regex elements
$mask = preg_replace('#[-[\].:\\\\^/]#', '\\\\$0', $mask);
preg_match('/^[^'.$mask.']+/u', $str, $matches);
return isset($matches[0]) ? UTF8::strlen($matches[0]) : 0;
}
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