From: Daniel Berger <djberg96@...>
Date: 2006-12-03T23:12:54+09:00
Subject: Re: File.size() returning negative for large files ????

Pedro Fortuny Ayuso wrote:
> On 12/3/06, Eric Hodel <drbrain@segment7.net> wrote:
>>
>> On Dec 3, 2006, at 24:30 , Greg Hauptmann wrote:
>> > On 12/3/06, Damjan Rems <d_rems@yahoo.com> wrote:
>> >> Greg Hauptmann wrote:
>> >>> I'm getting a negative number being returned for large files when
>> >>> using File.size()???  Any ideas?  One of my ruby books says an
>> >>> Integer can be any size??
>> >>>
>> >>> I'm using:
>> >>> - File.size(path)
>> >>> - getting negative number responses for large files (e.g.
>> >>> -1001581 where file was really around 3.2GB)
>> >>
>> >> It is not yours, but Windows fault.
>> >
>> > Is there a work around for this guys?
>>
>> [-1001581].pack('l').unpack('L').first # => 4293965715
> 
> 
> However, notice that for VERY large files, (larger than 4Gb, I guess,
> or 4294967296 bytes), that method fails also
> 
> [4294967296].pack('l')
> 
> is the same as
> 
> [4294967296*2].pack('l')
> 
> So something different ought to be used. You might as well get
> the info from "system (dir)" or similar for your specific case.
> 
> Pedro
> 
> 
> 

Try 'Q' instead.  Or, just use win32-file. :)

Regards,

Dan