From: Eric Hodel <drbrain@...7.net>
Date: 2009-04-18T05:36:19+09:00
Subject: Re: Windows platform, test if a file is fully flushed to disk.

On Apr 17, 2009, at 13:32, Brian Wallace wrote:
> The problem I'm having is with large files that take a long time to  
> copy
> into a folder in Windows, the file is added and picked up  
> immediately ... So
> the application tries to begin streaming, but ends up getting a
> "Errno::EACCES: Permission denied" on the file because it is still  
> being
> copied.
>
> I've been trying to find a way to test a file in windows to see if  
> it is
> readable/writable? I've tried all of the usual ruby methods:
>
> File.size = reports the total size of the file, even if its still  
> copying
> File.readable? ==> always returns true even during the copy
> File.writeable? ==> always returns true even during the copy.
>
> So I guess my question is: Does anyone know how to test if a file is
> complete in Windows?

Why not rescue Errno::EACCESS and retry at a later time?