Re: Collapsing paths

canonpath in File::Spec seems to do the trick.

use File::Spec::Functions 'canonpath';

print canonpath('foo/../bar/../baz/');

__END__
baz
[download]

lodin

Update: added examplifying code, but see ikegami's reply below.

Comment on Re: Collapsing paths Select or Download Code

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Re^2: Collapsing paths by tirwhan (Abbot) on Dec 05, 2007 at 12:52 UTC
canonpath in File::Spec seems to do the trick. Did you try it out? `#!/usr/bin/perl use File::Spec; print File::Spec->canonpath("foo/../bar/../baz/")."\n";` [download] Output: `foo/../bar/../baz` [download] I guess not. Did you read the docs? Quote: Note that this does not* collapse x/../y sections into y. This is by design.* I guess not. All dogma is stupid.	[reply] [d/l] [select]
Re^3: Collapsing paths by ikegami (Patriarch) on Dec 05, 2007 at 16:57 UTC
Depends on your system. `use File::Spec; print File::Spec->canonpath("foo/../bar/../baz/")."\n";` [download] `\baz` [download] On system without symlinks, `canonpath` collapses `x/../y` (although not always correctly, as shown above). Update: Technically, NTFS does have symlinks, but most software act as if they don't exist, including File::Spec.	[reply] [d/l] [select]
Re^3: Collapsing paths by lodin (Hermit) on Dec 05, 2007 at 20:34 UTC
Did you try it out? Yes I did. That's why I wrote "seems". I didn't know the behaviour was platform dependant. The documentation for File::Spec is contradicting the File::Spec::Win32 documentation which specifically says "foo/../bar" will become "bar". lodin	[reply]
Re^2: Collapsing paths by rvosa (Curate) on Dec 05, 2007 at 12:55 UTC
I don't think it does, it looks like it removes extraneous slashes, but doesn't collapse `../../` path fragments.	[reply] [d/l]