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comp.lang.ruby

best way to access directory relational to current file

phil swenson

1/28/2007 6:54:00 AM

I'm trying to find the full path to a file. File.dirname(__FILE__)
always returns ".", which doesn't really do me any good. The working
directory is not always the same as where the file is, so I can't use
the "." in any useful way.

What I'm trying to do is locate where a particular file is because I
know where other files are in relation to this particular file. I
don't know what the working directory will be though, anyone could
execute the ruby file originating from any location.

Thanks for any thoughts....

phil
2 Answers

Daniel Berger

1/28/2007 7:01:00 AM

0

phil.swenson@gmail.com wrote:
> I'm trying to find the full path to a file. File.dirname(__FILE__)
> always returns ".", which doesn't really do me any good. The working
> directory is not always the same as where the file is, so I can't use
> the "." in any useful way.

<snip>

I think you want File.expand_path(File.dirname(__FILE__))

Regards,

Dan

Daniel DeLorme

1/28/2007 1:28:00 PM

0

Daniel Berger wrote:
> phil.swenson@gmail.com wrote:
>> I'm trying to find the full path to a file. File.dirname(__FILE__)
>> always returns ".", which doesn't really do me any good. The working
>> directory is not always the same as where the file is, so I can't use
>> the "." in any useful way.
>
> I think you want File.expand_path(File.dirname(__FILE__))

I tend to use this idiom a lot:
require File.expand_path(__FILE__+'/../relative/path/to/file')

For ruby, "file" and "dummydir/../file" are considered as 2 different
files, so I think it's a good idea to always use absolute directories
when doing a require.

Daniel