Got the following sub for creating what I call "short paths," which are relative file paths that are relative to a common directory shared by a group of arbitrary files. It's broken in Windows. I'd rather avoid having to use Windows to test it. Is there a way I can tell File::Spec to behave as if it's on a Windows machine? 


use strict;
use warnings;
use File::Spec;

my @files = qw (
 C:\STRAWB~1\cpan\build\File-Collector-0.024-0\t\test_data\many_files\
+dir1\file4
 C:\STRAWB~1\cpan\build\File-Collector-0.024-0\t\test_data\many_files\
+dir1\file5
 C:\STRAWB~1\cpan\build\File-Collector-0.024-0\t\test_data\many_files\
+dir1\file6
 C:\STRAWB~1\cpan\build\File-Collector-0.024-0\t\test_data\many_files\
+dir2\file7
 C:\STRAWB~1\cpan\build\File-Collector-0.024-0\t\test_data\many_files\
+dir2\file8
 C:\STRAWB~1\cpan\build\File-Collector-0.024-0\t\test_data\many_files\
+dir2\file9
 C:\STRAWB~1\cpan\build\File-Collector-0.024-0\t\test_data\many_files\
+file1
 C:\STRAWB~1\cpan\build\File-Collector-0.024-0\t\test_data\many_files\
+file2
 C:\STRAWB~1\cpan\build\File-Collector-0.024-0\t\test_data\many_files\
+file3
);

&do(@files);

sub do {
  my @files = @_;

  my $os = $^O;

  my $file                          = pop @files;
  my ($vol, $dirs)                  = File::Spec->splitpath( $file );
  my @comps                         = File::Spec->splitdir( $dirs );
  my ($new_string, $longest_string) = '';
  foreach my $cfile (@files) {
    my ($cvol, $cdirs)           = File::Spec->splitpath( $cfile );
    my @ccomps                   = File::Spec->splitdir($cfile);
    my $lc     = 0;

    foreach my $comp (@ccomps) {
      if (defined $comps[$lc] && $ccomps[$lc] eq $comps[$lc]) {
        $new_string   .= File::Spec->catfile($ccomps[$lc++], '');
        next;
      }
      $longest_string = $new_string;
      ($cvol, $cdirs) = File::Spec->splitpath( $new_string );
      @comps          = File::Spec->splitdir($cdirs);
      $new_string     = '';
      last;
    }
  }

  #  $s->{_common_dir} = $longest_string || (fileparse($file))[1];

  if (@files) {
    foreach my $file ( @files, $file ) {
      my $tfile = $file;
      $tfile =~ s/$longest_string//;
      #    $s->{_files}{all}{$file}{short_path} = $tfile;
    }
  } else {
#    $s->{_files}{all}{$file}{short_path} = $file;
  }
}

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In reply to Any way to simulate a Windows path handling for File::Spec without Windows? by nysus

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