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#!/usr/bin/perl

(our $VERSION) = q$Id$ =~ /(\d+\.\d+)/;

#- Copyright (C) 1999-2005 Mandrakesoft
#-
#- 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.

use strict;
use URPM;
use URPM::Build;
use File::Find ();
use File::Path;
use Getopt::Long;
use Pod::Usage;

# TODO generate MD5SUM
# TODO more flexiblity about destination directory

my ($noclean, $nooutput, $dontdie, $suffix, $dest) = (0, 0, 0, "", "");
my $tmpdir = (-d "$ENV{HOME}/tmp" ? "$ENV{HOME}/tmp" : $ENV{TMPDIR} || "/tmp") . "/.build_hdlist";

sub usage () {
    pod2usage({ -verbose => 1 });
}

GetOptions(
    'dest=s' => \$dest,
    'headersdir=s' => \$tmpdir,
    'help|h' => sub { usage(); exit 0 },
    nobadrpm => \$dontdie,
    noclean => \$noclean,
    s => \$nooutput,
    'suffix=s' => \$suffix,
    'v|version' => sub { warn "$0 version $VERSION\n"; exit 0 },
);

my $urpm = new URPM;
my $index = "hdlist$suffix.cz";
my $synthesis = "synthesis.$index";
my @dir = @ARGV ? @ARGV : ("."); 

grep { m!^/! } @dir and die "Directories to parse should be relative\n";

$dest and do { chdir $dest or die "Can't chdir in directory $dest\n" };
rmtree($tmpdir) unless $noclean;
mkpath($tmpdir);

my @rpms;
my %rpmslist;

# get rpm list
open my $list, ">", "list$suffix" or die "Can't create list file: $!\n";
foreach my $dir (@dir) {
    print "parsing $dir\n" unless $nooutput;
    @rpms = ();
    %rpmslist = ();
    File::Find::find(
	{
	    wanted => sub {
		if (-f $_ && /^.*\.rpm$/) {
		    push(@rpms, $File::Find::name);
		}
	    },
	    follow => 1,
	}, $dir,
    );
    $urpm->parse_rpms_build_headers(
	dir  => $tmpdir,
	rpms => \@rpms,
	dontdie => $dontdie,
	silent => $nooutput,
	callback => sub {
	    my ($urpm, $id, %options) = @_;

	    # This code needs a fix in perl-URPM
	    # print $list "$options{file}\n";
	    $rpmslist{scalar($urpm->{depslist}[$id]->fullname) . ".rpm"} = 1;
	    $urpm->{depslist}[$id]->pack_header;
	},
    );
    # This code will become useless... see above
    foreach my $rpm (@rpms) { 
	$rpmslist{($rpm =~ m!.*/(.*)\z!)[0]} or next;
	print $list "$rpm\n";
    }
}
close($list);

# create index file
# No rpms, exit !
@{$urpm->{depslist}} > 0 or die "Nothing read\n";

$urpm->build_hdlist(
    start  => 0,
    end    => $#{$urpm->{depslist}},
    dir    => $tmpdir,
    hdlist => $index,
    ratio  => 9,
);
rmtree($tmpdir) unless $noclean;

# create synthesis file
$urpm->build_synthesis(
    start     => 0,
    end       => $#{$urpm->{depslist}},
    synthesis => $synthesis,
);

__END__

=head1 NAME

genhdlist - generates an hdlist file

=head1 SYNOPSIS

    genhdlist [options] dir [dir...]

=head1 OPTIONS

=over 4

=item --dest dir

Build index from this directory.

=item --headersdir dir

Put temporary files in directory.

=item --nobadrpm

Do not abort on bad rpms.

=item --noclean

Keep cache files.

=item -s

Silent mode.

=item --suffix SUFFIX

Put a suffix on hdlist names.

=back

=head1 DESCRIPTION

F<genhdlist> is used to generate an hdlist and a synthesis file from a set
of RPM packages found in the directories passed on the command-line. By
default it will put the hdlist and synthesis files in the current
directory.

It will also generate a F<list> file containing the relative paths to all
RPMs. Consequently, the paths to the directories passed to F<genhdlist> must
be relative ones.

=head1 SEE ALSO

gendistrib(1)

=head1 COPYRIGHT

Copyright (C) 1999-2005 Mandrakesoft

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.

=cut