From: Joe Wreschnig <piman@...>
Date: 2002-07-08T12:50:28+09:00
Subject: Re: What to use for OS-specific module namespaces?


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On Sun, 2002-07-07 at 21:59, nobu.nokada@softhome.net wrote:
> > Maybe there should be some standard (e.g. Perl has sys and sys/linux
> > which is mostly a C holdover I think). Maybe OS::Linux, OS::Windows,
> > etc? It would allow OS::Linux::Debian, OS::Linux::RedHat, and things
> > like OS::Linux::Proc for things that are cross-distribution, similar
> > things could be done with with Windows and OS::Windows::NT,
> > OS::Windows::9x, OS::Windows::XP (which would in theory mix in NT and
> > 9x), and OS::Windows::Win32 for the common APIs.
>=20
> I agree about the first sentence, but cannot imagin the
> needs/advantages for per-distribution namespaces.

The only function that came to mind at the time for distributions was
distribution version, but in retrospect, that's the only one I can think
of, and also my hierarchy might even be backwards (e.g. there's three
BSD, Linux, and Hurd kernels for Debian, and WINE would be something
like UNIX::Win32, which doesn't fit in at all). So yeah, the
distribution-specific namespace is a bad idea.

> If I were you, I'd implement in long namespaces and provide
> short aliases.  For example, in i386-linux/os.rb
>=20
>   module OS
>     module Linux
>       def self.processor
> 	# ...
>       end
>       module ACPI
> 	# ...
>       end
>     end
>=20
>     # shorthands
>     def self.processor
>       Linux.processor
>     end
>     ACPI =3D Linux::ACPI
>   end

That sounds like a good idea; it might later contain tests to pick the
right aliases depending on the underlying system.

> ...but I worry wheather processor is an attribute of OS.  May
> SysInfo or something be better?

Another good idea; thanks. :) I thought about calling it "Hardware"
originally, but since I'm not using actual hardware calls but the data
published by the kernel, I switched to OS. SysInfo is a good compromise
between the two.
--=20
 - Joe Wreschnig <piman@sacredchao.net>  -  http://www.sacredchao.net
  "What I did was justified because I had a policy of my own... It's
   okay to be different, to not conform to society."
                                   -- Chen Kenichi, Iron Chef Chinese

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