lib/perl5/5.6.1/File/Spec.pm

   1 package File::Spec;
   2
   3 use strict;
   4 use vars qw(@ISA $VERSION);
   5
   6 $VERSION = 0.82 ;
   7
   8 my %module = (MacOS   => 'Mac',
   9               MSWin32 => 'Win32',
  10               os2     => 'OS2',
  11               VMS     => 'VMS',
  12               epoc    => 'Epoc');
  13
  14 my $module = $module{$^O} || 'Unix';
  15 require "File/Spec/$module.pm";
  16 @ISA = ("File::Spec::$module");
  17
  18 1;
  19 __END__
  20
  21 =head1 NAME
  22
  23 File::Spec - portably perform operations on file names
  24
  25 =head1 SYNOPSIS
  26
  27         use File::Spec;
  28
  29         $x=File::Spec->catfile('a', 'b', 'c');
  30
  31 which returns 'a/b/c' under Unix. Or:
  32
  33         use File::Spec::Functions;
  34
  35         $x = catfile('a', 'b', 'c');
  36
  37 =head1 DESCRIPTION
  38
  39 This module is designed to support operations commonly performed on file
  40 specifications (usually called "file names", but not to be confused with the
  41 contents of a file, or Perl's file handles), such as concatenating several
  42 directory and file names into a single path, or determining whether a path
  43 is rooted. It is based on code directly taken from MakeMaker 5.17, code
  44 written by Andreas KE<ouml>nig, Andy Dougherty, Charles Bailey, Ilya
  45 Zakharevich, Paul Schinder, and others.
  46
  47 Since these functions are different for most operating systems, each set of
  48 OS specific routines is available in a separate module, including:
  49
  50         File::Spec::Unix
  51         File::Spec::Mac
  52         File::Spec::OS2
  53         File::Spec::Win32
  54         File::Spec::VMS
  55
  56 The module appropriate for the current OS is automatically loaded by
  57 File::Spec. Since some modules (like VMS) make use of facilities available
  58 only under that OS, it may not be possible to load all modules under all
  59 operating systems.
  60
  61 Since File::Spec is object oriented, subroutines should not called directly,
  62 as in:
  63
  64         File::Spec::catfile('a','b');
  65
  66 but rather as class methods:
  67
  68         File::Spec->catfile('a','b');
  69
  70 For simple uses, L<File::Spec::Functions> provides convenient functional
  71 forms of these methods.
  72
  73 For a list of available methods, please consult L<File::Spec::Unix>,
  74 which contains the entire set, and which is inherited by the modules for
  75 other platforms. For further information, please see L<File::Spec::Mac>,
  76 L<File::Spec::OS2>, L<File::Spec::Win32>, or L<File::Spec::VMS>.
  77
  78 =head1 SEE ALSO
  79
  80 File::Spec::Unix, File::Spec::Mac, File::Spec::OS2, File::Spec::Win32,
  81 File::Spec::VMS, File::Spec::Functions, ExtUtils::MakeMaker
  82
  83 =head1 AUTHORS
  84
  85 Kenneth Albanowski <F<kjahds@kjahds.com>>, Andy Dougherty
  86 <F<doughera@lafcol.lafayette.edu>>, Andreas KE<ouml>nig
  87 <F<A.Koenig@franz.ww.TU-Berlin.DE>>, Tim Bunce <F<Tim.Bunce@ig.co.uk>>. VMS
  88 support by Charles Bailey <F<bailey@newman.upenn.edu>>.  OS/2 support by
  89 Ilya Zakharevich <F<ilya@math.ohio-state.edu>>. Mac support by Paul Schinder
  90 <F<schinder@pobox.com>>.  abs2rel() and rel2abs() written by
  91 Shigio Yamaguchi <F<shigio@tamacom.com>>, modified by Barrie Slaymaker
  92 <F<barries@slaysys.com>>.  splitpath(), splitdir(), catpath() and catdir()
  93 by Barrie Slaymaker.