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- package blib;
-
- =head1 NAME
-
- blib - Use MakeMaker's uninstalled version of a package
-
- =head1 SYNOPSIS
-
- perl -Mblib script [args...]
-
- perl -Mblib=dir script [args...]
-
- =head1 DESCRIPTION
-
- Looks for MakeMaker-like I<'blib'> directory structure starting in
- I<dir> (or current directory) and working back up to five levels of '..'.
-
- Intended for use on command line with B<-M> option as a way of testing
- arbitary scripts against an uninstalled version of a package.
-
- However it is possible to :
-
- use blib;
- or
- use blib '..';
-
- etc. if you really must.
-
- =head1 BUGS
-
- Pollutes global name space for development only task.
-
- =head1 AUTHOR
-
- Nick Ing-Simmons nik@tiuk.ti.com
-
- =cut
-
- use Cwd;
- use File::Spec;
-
- use vars qw($VERSION $Verbose);
- $VERSION = '1.02';
- $Verbose = 0;
-
- sub import
- {
- my $package = shift;
- my $dir = getcwd;
- if ($^O eq 'VMS') { ($dir = VMS::Filespec::unixify($dir)) =~ s-/\z--; }
- if (@_)
- {
- $dir = shift;
- $dir =~ s/blib\z//;
- $dir =~ s,/+\z,,;
- $dir = File::Spec->curdir unless ($dir);
- die "$dir is not a directory\n" unless (-d $dir);
- }
- my $i = 5;
- my($blib, $blib_lib, $blib_arch);
- while ($i--)
- {
- $blib = File::Spec->catdir($dir, "blib");
- $blib_lib = File::Spec->catdir($blib, "lib");
-
- if ($^O eq 'MacOS')
- {
- $blib_arch = File::Spec->catdir($blib_lib, $MacPerl::Architecture);
- }
- else
- {
- $blib_arch = File::Spec->catdir($blib, "arch");
- }
-
- if (-d $blib && -d $blib_arch && -d $blib_lib)
- {
- unshift(@INC,$blib_arch,$blib_lib);
- warn "Using $blib\n" if $Verbose;
- return;
- }
- $dir = File::Spec->catdir($dir, File::Spec->updir);
- }
- die "Cannot find blib even in $dir\n";
- }
-
- 1;
-