Different OS, Different Line Break, Be a Little Problem

Hi guys, I has a little problem with line break character, when i developing Contact_AddressBook, I tried to using different format of file, actually I used Windows (CRLF), Unix (LF) and Mac (CR). Contact_AddressBook use File_CSV (PEAR::File Package) to handling CSV file, when I sets the config 'crlf' = "\r\n" then I given Windows and Unix file format, everything fine, but when i given Mac format it doesn't working. PEAR.php, only defined OS_WINDOWS and OS_UNIX also PEAR_OS which the value is one of 'Windows' or 'Unix', I think, I able to resolve this problem if I know what the OS. My questions: 1. How to know what the OS, Windows/Unix/Mac family? Actually the problem is Mac, cause I can't testing there, I have no Mac OS :-D installed. 2. Does it needed to define OS_MAC and PEAR_OS = 'Mac' in PEAR.php? Regards, -- Firman -- .:: OrangEnigmA : Never Dreamt Before ::.