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use strict; package Path::Class; { $Path::Class::VERSION = '0.37'; } { ## no critic no strict 'vars'; @ISA = qw(Exporter); @EXPORT = qw(file dir); @EXPORT_OK = qw(file dir foreign_file foreign_dir tempdir); } use Exporter; use Path::Class::File; use Path::Class::Dir; use File::Temp (); sub file { Path::Class::File->new(@_) } sub dir { Path::Class::Dir ->new(@_) } sub foreign_file { Path::Class::File->new_foreign(@_) } sub foreign_dir { Path::Class::Dir ->new_foreign(@_) } sub tempdir { Path::Class::Dir->new(File::Temp::tempdir(@_)) } 1; __END__ =head1 NAME Path::Class - Cross-platform path specification manipulation =head1 VERSION version 0.37 =head1 SYNOPSIS use Path::Class; my $dir = dir('foo', 'bar'); # Path::Class::Dir object my $file = file('bob', 'file.txt'); # Path::Class::File object # Stringifies to 'foo/bar' on Unix, 'foo\bar' on Windows, etc. print "dir: $dir\n"; # Stringifies to 'bob/file.txt' on Unix, 'bob\file.txt' on Windows print "file: $file\n"; my $subdir = $dir->subdir('baz'); # foo/bar/baz my $parent = $subdir->parent; # foo/bar my $parent2 = $parent->parent; # foo my $dir2 = $file->dir; # bob # Work with foreign paths use Path::Class qw(foreign_file foreign_dir); my $file = foreign_file('Mac', ':foo:file.txt'); print $file->dir; # :foo: print $file->as_foreign('Win32'); # foo\file.txt # Interact with the underlying filesystem: # $dir_handle is an IO::Dir object my $dir_handle = $dir->open or die "Can't read $dir: $!"; # $file_handle is an IO::File object my $file_handle = $file->open($mode) or die "Can't read $file: $!"; =head1 DESCRIPTION C<Path::Class> is a module for manipulation of file and directory specifications (strings describing their locations, like C<'/home/ken/foo.txt'> or C<'C:\Windows\Foo.txt'>) in a cross-platform manner. It supports pretty much every platform Perl runs on, including Unix, Windows, Mac, VMS, Epoc, Cygwin, OS/2, and NetWare. The well-known module L<File::Spec> also provides this service, but it's sort of awkward to use well, so people sometimes avoid it, or use it in a way that won't actually work properly on platforms significantly different than the ones they've tested their code on. In fact, C<Path::Class> uses C<File::Spec> internally, wrapping all the unsightly details so you can concentrate on your application code. Whereas C<File::Spec> provides functions for some common path manipulations, C<Path::Class> provides an object-oriented model of the world of path specifications and their underlying semantics. C<File::Spec> doesn't create any objects, and its classes represent the different ways in which paths must be manipulated on various platforms (not a very intuitive concept). C<Path::Class> creates objects representing files and directories, and provides methods that relate them to each other. For instance, the following C<File::Spec> code: my $absolute = File::Spec->file_name_is_absolute( File::Spec->catfile( @dirs, $file ) ); can be written using C<Path::Class> as my $absolute = Path::Class::File->new( @dirs, $file )->is_absolute; or even as my $absolute = file( @dirs, $file )->is_absolute; Similar readability improvements should happen all over the place when using C<Path::Class>. Using C<Path::Class> can help solve real problems in your code too - for instance, how many people actually take the "volume" (like C<C:> on Windows) into account when writing C<File::Spec>-using code? I thought not. But if you use C<Path::Class>, your file and directory objects will know what volumes they refer to and do the right thing. The guts of the C<Path::Class> code live in the L<Path::Class::File> and L<Path::Class::Dir> modules, so please see those modules' documentation for more details about how to use them. =head2 EXPORT The following functions are exported by default. =over 4 =item file A synonym for C<< Path::Class::File->new >>. =item dir A synonym for C<< Path::Class::Dir->new >>. =back If you would like to prevent their export, you may explicitly pass an empty list to perl's C<use>, i.e. C<use Path::Class ()>. The following are exported only on demand. =over 4 =item foreign_file A synonym for C<< Path::Class::File->new_foreign >>. =item foreign_dir A synonym for C<< Path::Class::Dir->new_foreign >>. =item tempdir Create a new Path::Class::Dir instance pointed to temporary directory. my $temp = Path::Class::tempdir(CLEANUP => 1); A synonym for C<< Path::Class::Dir->new(File::Temp::tempdir(@_)) >>. =back =head1 Notes on Cross-Platform Compatibility Although it is much easier to write cross-platform-friendly code with this module than with C<File::Spec>, there are still some issues to be aware of. =over 4 =item * On some platforms, notably VMS and some older versions of DOS (I think), all filenames must have an extension. Thus if you create a file called F<foo/bar> and then ask for a list of files in the directory F<foo>, you may find a file called F<bar.> instead of the F<bar> you were expecting. Thus it might be a good idea to use an extension in the first place. =back =head1 AUTHOR Ken Williams, KWILLIAMS@cpan.org =head1 COPYRIGHT Copyright (c) Ken Williams. All rights reserved. This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself. =head1 SEE ALSO L<Path::Class::Dir>, L<Path::Class::File>, L<File::Spec> =cut
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