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petdance (2468)

petdance
  andy@petdance.com
http://www.perlbuzz.com/
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I'm Andy Lester, and I like to test stuff. I also write for the Perl Journal, and do tech edits on books. Sometimes I write code, too.

Journal of petdance (2468)

Tuesday August 06, 2002
02:45 PM

Misusing URI for filename tweaking

[ #6941 ]
(Which is not the same as misusing Uri)

I just realized I could use URI to make full pathnames into relative pathnames:

my $dispname = URI->new("file://$filename")->rel("file://$startpath");

This way, if

$filename="/home/alester/tw/intro/about.html"

and

$startpath="/home/alester/tw/"

then

$dispname="intro/about.html"

That construct, modulo the "file://", is stolen from Sean Burke's excellent Perl & LWP, page 56.

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  • File::Spec has an abs2rel() method to do that, and should handle OS-specific path separators as well.

    Of course, that doesn't have the fun of misuse.
    • ARGH. I can't tell you how many times I went over File::Spec in Perl In A Nutshell looking for something like that. I wonder if it's missing, and I should have stuck to the man pages.

      Thanks for pointing it out.

      --

      --
      xoa