From: Yohanes Santoso <ruby-talk@...>
Date: 2002-06-17T08:57:49+09:00
Subject: Re: File.new('foo', 0600 , 'wb')

Tobias Reif <tobiasreif@pinkjuice.com> writes:

> Carlos wrote:
> 
> 
> > So you cannot specify permissions if you use "wb", this parameter is
> > ignored. If you want to specify permissions, you must use numeric mode. Guy
> > is suggesting that you do:
> > flag = File::CREAT
> > flag |= File::BINARY if File::Constants.const_defined?("BINARY")
> > File.new "foo", flag, 0600
> 
> 
> I'm not sure if an alternative would be feasible, but I find all this
> very quirky. I just want save some image data, with permission 0600;
> the code should be very short and simple, and work on all major
> OSes. I do not want to write three lines of uppercase double colon
> mess.

Well, you have two conflicting requirements: permission 0600 and
platform independence. Permission 0600 may produce unexepected
permission/result in Windows or other non-POSIX OSes, depending on the
reliability and conformance of the Unix emulation layer on those OSes,
and File::BINARY is invalid in UNIX.

The code above is as succinct as it can be if you want it to operate
in both Unix and Windows.

YS.