#!/usr/bin/perl

##- Nanar <nanardon@zarb.org>
##-
##- 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, 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.

# $Id$

use strict;
use RPM4;
use Getopt::Long;

my $qf = "%{NAME}-%{VERSION}-%{RELEASE}.%{ARCH}\n";
my $cond = undef;

my $go_res = GetOptions (
    "qf|queryformat=s" => \$qf,
    "c|cond=s" => \$cond,
    "qi" => sub {
        $qf = 
'Name        : %-27{NAME}  Relocations: %|PREFIXES?{[%{PREFIXES} ]}:{(not relocatable)}|
Version     : %-27{VERSION}       Vendor: %{VENDOR}
Release     : %-27{RELEASE}   Build Date: %{BUILDTIME:date}
Install Date: %|INSTALLTIME?{%-27{INSTALLTIME:date}}:{(not installed)         }|      Build Host: %{BUILDHOST}
Group       : %-27{GROUP}   Source RPM: %{SOURCERPM}
Size        : %-27{SIZE}%|LICENSE?{      License: %{LICENSE}}|
Signature   : %|DSAHEADER?{%{DSAHEADER:pgpsig}}:{%|RSAHEADER?{%{RSAHEADER:pgpsig}}:{%|SIGGPG?{%{SIGGPG:pgpsig}}:{%|SIGPGP?{%{SIGPGP:pgpsig}}:{(none)}|}|}|}|
%|PACKAGER?{Packager    : %{PACKAGER}\n}|%|URL?{URL         : %{URL}\n}|\Summary     : %{SUMMARY}
Description :\n%{DESCRIPTION}
';
    },
);
my ($type, $name, $flag, $ENV, $dep);
if ($cond) {
    my @d = split(/ +/, $cond);
    $dep = RPM4::newdep(@d);
}

($go_res && @ARGV) or die 
"$0 [--qf|--queryformat rpm_query] [--cond cond] hdlist.cz [hdlist2.cz [...]]
Do something like `rpm -q --queryformat' on each header contains in hdlist archive
--cond: show only rpm which apply to this condition:
  R|C NAME [<=> VERSION], ex C rpm = 4.2.1 will show rpm providing rpm-4.2.1
example: $0 --qf '%{NAME}\\n' hdlist.cz
";

foreach (@ARGV) {
    open(my $hdfh, "zcat '$_' |") or die "Can't open $_";
    while (my $hdr = stream2header($hdfh)) {
        if ($cond) {
            $hdr->matchdep($dep, "PROVIDE") or next;
        }
        print $hdr->queryformat($qf);
    }
    close($hdfh);
}