From: Jim Freeze <jim@...>
Date: 2002-07-08T13:41:36+09:00
Subject: Re: How to determine EOF with sysread?

On Mon, Jul 08, 2002 at 01:35:46PM +0900, Ned Konz wrote:
> On Sunday 07 July 2002 08:58 pm, Jim Freeze wrote:
> > Hi:
> >
> > How does one determine the eof when using
> > sysread. The example below seems to indicate
> > that using #eof? corrupts the file pointer.
> 
> So don't use eof?. Use the EOFError that sysread raises
> at the end of file:
> 
Thanks all for the answers.
Does it strike anyone as bad practice
to use a rescue for control flow?
I thought a more explicit test method would
have been provided.

Jim


> buff_size = File.stat(ARGV[0]).blksize
> File.open(ARGV[0]) { |f|
>   begin
>     loop { buff = f.sysread(buff_size); print buff }
>   rescue EOFError
>     print "\nDone.\n"
>   end
> }
> 
> 
> -- 
> Ned Konz
> http://bike-nomad.com
> GPG key ID: BEEA7EFE
> 
> 

-- 
Jim Freeze
If only I had something clever to say for my comment...
~