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wickline (135)

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Journal of wickline (135)

Wednesday July 10, 2002
09:03 AM

dump of module version information

[ #6252 ]
mako132 was looking for a way to get version info for
each module use'd by his script.

I replied with a ~20 line END block which should do the
trick. I thought I might find the code handy myself one
day, so I thought I'd stash it in my journal as well for
ease of finding. ((code at end of journal entry))

Maybe that's a use for this journal... post odd bits of
code that don't have any associated project, invite any
readers to critique/improve/ridicule said code, look at
code years in the future when I can better do the same
to it.

(still deciding what to do with this journal thing)

END { no strict 'refs';
    for my $k ( sort keys %INC ) {
        ( my $module = $k ) =~ s{[:/\\]}{::}g;
        $module =~ s{\.pm$}{};
        my $version = ${"${module}::VERSION"};
        if ( defined $version ) {
            $version = "\$${module}::VERSION = $version\n";
        } else { # maybe they didn't use ALLCAPS
            my @found = (
                map { defined ${"${module}::$_"}
                     ? qq(\$${module}::$_ = ${"${module}::$_"}) : ()
                grep { m/^version$/i }
                keys %{"${module}::"}
            $version = !@found
                ? "($module  version number not found)\n"
                : join( "\n", @found );
        # if you want, print this to a log file instead:
        print "$version $module  loaded from  $INC{$k}\n\n";
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  • You can use $module->VERSION instead of ${"${module}::VERSION"};. And yes, it handles the case when package uses lowercase name of version variable.

    Ilya Martynov ( [])

    • That's handy to know :) ...and that makes things even tidier...
      (code below not yet tested...could have typos, etc)

      END {
          for my $k ( sort keys %INC ) {
              ( my $module = $k ) =~ s{[:/\\]}{::}g;
              $module =~ s{\.pm$}{};
              my $version = $module->VERSION;
              $version = defined $version
                  ? "\$${module}::VERSION = $version\n";