/**
* Function that attempts to return the kind of platform.
* @return string OS kind ('win', 'lin' or 'osx').
*/
protected static function _getOS()
{
if (self::$_os == '') {
if (stristr(PHP_OS, 'WIN') && !stristr(PHP_OS, 'DAR')) {
self::$_os = 'win';
} elseif (`uname | grep -i linux` != '') {
self::$_os = 'lin';
} elseif (`uname | grep -i darwin` != '') {
self::$_os = 'osx';
} else {
throw new Exception('WKPDF couldn\'t determine OS.');
}
}
return self::$_os;
}
