#!/usr/bin/perl

# Portage Inventory - Pulls data about ebuilds from the portage database
#                     and prints it in CSV form
# Copyright (C) 2005 Nikolas 'Atrus' Coukouma
# 
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; either version 2
# of the License, or (at your option) any later version.
# 
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
# 
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.

# You can fiddle with some of the variables below to get the
# information you need

sub package_licenses {
    # See manpage of esearch for details
    my $format = "%n\\t%d\\t%h\\t0\\t??\\t%l\\t??";
    my $query_cmd ="esearch -nF --own=\"$format\"";
    #my $query_cmd ="emerge --search ";
    #preprocess name for query_cmd
    my $pkg_match = '^([\\w-]*/[\\w\\d-]*?)-[\\d\\.\\w]+(?:-r\\d+)?$';
    
    my $output;
    for my $pkg ( @_ ) {
        $pkg =~ m/$pkg_match/;
        #print "  $pkg\n";
        $pkg = $1;
        
        $output = `$query_cmd $pkg`;
        #print "  $query_cmd $pkg\n";
        @lines = split( /\n/, $output );
        
        #only print the first result
        print $lines[ 0 ] . "\n";
    }
}

sub get_world_list () {
    my $ebuild_regex ="\\[ebuild.......\\] ([\\w\\/\\.\\d-]*)";
    #my $list_cmd = "emerge -p world";
    my $list_cmd = "emerge -p --emptytree world";
    
    my @ebuilds = ();
    
    my $output = `$list_cmd`;
    foreach my $line (split "\n", $output) {
        push( @ebuilds, $1 ) if $line =~ m/$ebuild_regex/;
    }
    
    return @ebuilds;
}

package_licenses( get_world_list() );