#!/usr/bin/perl

use strict;
use warnings;

system('pmvers CGI File::Find Clone Catalyst::Runtime');
[download]

Updated: This script by Fastolfe uses CPAN:

RE: find perl module version from commandline. Uses commandline, sorry:). To run it, for example,

perl script.pl CGI File::Find Clone Catalyst::Runtime

Nope, pmvers doesn't fetch the list of latest modules from CPAN

command line is irrelevant.

What did you mean by non-command line? As in .. Did you mean you want a perl API ish way to go about this? If you're on posix/unixy variants, why would you want to avoid systemy calls? "Purity"? One philosophy of *ix is many small programs working together to do wonderful things. I forget that a lot myself.

Maybe you are trying to keep some modules current?
If so, what makes you so sure that just because a module has been updated on cpan- you should upgrade? Just a thought..

I would imagine checking the test results *and* version numbers might be useful. If the current version on your machine shows 9/10 pass, and the new version shows 0/23- maybe upgrading is iffy.

(Maybe it's time for a auto perl module /cpan thingie update? Might be out there.)

Just throwing some thoughts out there..

WWW:CPAN is insteresting.. the deps are daunting.. well.. it just seems like a *lot* just to get a freaking version number from cpan..

Ok.. here's some scripting I have for myself.. Consists of 3 parts, one that checks version installed, one that checks version on cpan, and one that compares versions and optionally ass or/or installs new versions..

CAVEAT, these work and are cute.. and they are hacks.

pmver

#!/usr/bin/perl
use strict;
use base 'LEOCHARRE::CLI';

my $o = gopts('r');


scalar @ARGV or die('missing modules args');

my $manymods = scalar @ARGV > 1 ? 1 : 0;

map { do_one($_) } @ARGV;

sub usage {
   return qq{
$0 - what version of a perl module is installed

DESCRIPTION

If the moduoe version cannot be determined it returns 0,
if the module is not present, returns undef.


OPTION FLAGS

   -r round off things like 2.15, 0.345, and v5.4.4 to 2, 0, and 5
   -d debug
   h- help

USAGE EXAMPLES

   $0 CPAN
   $0 Cwd

SEE ALSO

LEOCHARRE::Dev
};
}




sub do_one {
   my $modname = shift;

   debug("modname $modname");

   my $ver;
   no strict 'refs';

   if ( eval "require $modname" ){

      debug($modname);

      #require $modname;

      $ver = ${"$modname\:\:VERSION"};
      defined $ver or debug("$modname is installed but can't set versi
+on via module.");

   }



   #`perl -M$mod -e "print \$$mod::VERSION"

   else {
      debug("$modname not installed on this system.");
      $ver = '';
   }

   if ($o->{r} and $ver){
      $ver=~s/^v//;
      $ver=~s/\..+$//;
   }


   defined $ver or $ver =0;

   if ( $manymods ){
      print "$modname $ver\n";
   }

   else { print $ver }
}
[download]

pmvercpan

#!/usr/bin/perl
use strict;
use base 'LEOCHARRE::CLI';
use WWW::CPAN;
use Smart::Comments '###';
my $o = gopts('V');

@ARGV or die('missing arg');


my $cpan = WWW::CPAN->new;

my @v = map { get_cpan_version($_) } @ARGV;

print join("\n",@v);

sub usage {

return qq{$0 - get module versions from cpan

OPTION FLAGS

   -V verbose, print meta info to stdout

SEE ALSO

LEOCHARRE::Dev

   };
}


sub get_cpan_version {
   my $dist = shift;
   $dist or die('missing arg');
   my $distname = _arg2distname($dist) or die;

   my $meta = $cpan->fetch_distmeta({ dist => $distname})
      or print STDERR "cant fetch dist meta for $distname\n"
      and return '';
   if( $o->{V} ){
      ### $meta
   }

   my $version = $meta->{version}
      or print STDERR "cant get version number for $distname\n"
      and return '';

   return $version;
}

sub _arg2distname {
   my $arg = shift;

   my $namechars = qr/[a-zA-Z0-9]/;
   my $distchars = qr/[a-zA-Z0-9\:\-\.]/;

   $arg=~/^$distchars+$/ or die("argument $arg doesn't look like a dis
+tro name");
   $arg=~s/\:\:/\-/g;
   return $arg;


}
[download]

pmverstatus

#!/usr/bin/perl
use strict;
use base 'LEOCHARRE::CLI';
use vars qw(@MODULES);


my $o = gopts('m:uaV');




@MODULES = @ARGV;
(push @MODULES, $o->{m})  if $o->{m};

if ($o->{a}){

   print join( "\n", @INC);

}



if ($o->{a}){

   for my $inc (@INC){
      print STDERR "looking in $inc ..\n";
      my @got = find_modules_in($inc)
         or print STDERR "none found.\n";
      printf STDERR "found %s modules.\n", scalar @got;
      push @MODULES, @got;
   }


}

scalar @MODULES or die("no modules arg");
printf STDERR "Testing for %s module total.. \n", scalar @MODULES;


sub find_modules_in {
   my $dir = shift;

   my @modnames;

   for my $path ( split( /\n/, `find '$dir' -type f -name "*.pm"`) ){
      $path=~s/^$dir\/+//;
      $path=~s/\//\:\:/g;
      $path=~s/\.pm$//;
      push @modnames, $path;
   }

   return @modnames;
}


for my $modname ( @MODULES ){
   my($vold, $vnew);

   unless( ($vold, $vnew) = is_update_available($modname) ){
      print STDERR "$modname, no update found.\n" if DEBUG;
      print STDERR "." if $o->{V};
      next;
   }

   print STDERR "$modname $vold, update $vnew found.\n";
   $o->{u} or next;

   unless( $o->{f} ){ # no force?
      yn("Would you like to update?")
      or next;
   }

   system('cpan', $modname) ==0 or warn("could not update $modname")
      and next;

}







sub is_update_available {
   my $modname = shift;

   my $v_installed = `pmver $modname 2>/dev/null`;
   $v_installed=~s/^\s+|\s+$//g;

   unless( defined $v_installed ){
      print STDERR "$modname installed, missing version\n";
      return;
   }

   my $v_cpan = `pmvercpan $modname 2>/dev/null`;
   $v_cpan=~s/^\s+|\s+$//g;

   unless( defined $v_cpan ){
      print STDERR "$modname on cpan, missing version\n";
      return;
   }


   if ( $v_installed < $v_cpan ){
      return ($v_installed, $v_cpan);
   }
   return;
}















sub usage {
   return qq{
$0 - check status of perl modules installed against versions on cpan



OPTION FLAGS

   -a all modules
   -u auto update modules
   -V verbose


ARGUMENTS

   -m module name to check
   -b base dir to check modules from

SEE ALSO

LEOCHARRE::Dev

USAGE

$0 -ua

   };

}
[download]

Tested these out adn it's very cute. It's running through every one of my installed modules and propmting me to update if it finds a newer ver on cpan. :-)