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