From: Paul Archer <paul@...>
Date: 2009-07-22T06:03:13+09:00
Subject: Re: safe move/copy with incrementing filenames?

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Thanks. That's a good start. While I think I'll be working one file at a 
time, FileUtils.mv can take a glob of filenames as the source, and a 
directory as the destination--so I need to make sure I check every file 
individually. If I end up with something that's not too ugly, I'll post 
it.

Paul


Tomorrow, pharrington wrote:

>> On Jul 20, 10:50�pm, Paul Archer <p...@paularcher.org> wrote:
>> So, I'm working on some DAM (digital asset management) scripts, and I want
>> to make sure that I don't overwrite any files when I move or copy them.
>> I was about to start working on a move method that would add a number to
>> the destination filename if the name already exists. (IE
>> mv('pma_20090720_1234.jpg', 'archive/2009/07') might create an
>> 'archive/2009/07/pma_20090720_1234-1.jpg if pma_20090720_1234.jpg exists.)
>>
>> Question: is there already a module that can do that?
>>
>> Paul
>
> I've just been doing this:
>
> def unique(filename)
>  count = 0
>  unique_name = filename
>  while File.exists?(unique_name)
>    count += 1
>    unique_name = "#{File.join(
>      File.dirname(filename),
>      File.basename(filename, ".*"))}_#{count}#{File.extname
> (filename)}"
>  end
>  unique_name
> end
>
> there's probably a better way though
>
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