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#!/usr/bin/perl
#- Synchronize mulitple RPMS/SRPMS directories.
#- Copyright (C) 1999 MandrakeSoft (fpons@mandrakesoft.com)
#-
#- 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 qw(subs vars refs);
#- get basename for a file.
sub basename { $_[0] =~ /([^\/]*)$/ ? $1 : $_[0]; }
#- compare a version string.
sub version_compare {
my ($a, $b) = @_;
local $_;
while ($a && $b) {
my ($sb, $sa) = map { $1 if $a =~ /^\W*\d/ ? s/^\W*0*(\d+)// : s/^\W*(\D+)// } ($b, $a);
$_ = length($sa) cmp length($sb) || $sa cmp $sb and return $_;
}
}
#- system functions.
sub cp {
my $pid;
if ($pid = fork()) {
waitpid($pid, 0);
} else {
exec '/bin/cp', @_;
}
}
sub rm {
my $pid;
if ($pid = fork()) {
waitpid($pid, 0);
} else {
exec '/bin/rm', '-f', @_;
}
}
#- get a hash on name of srpms/rpms in a directory.
sub get_rpms {
my ($dir, $rpms, $flag) = @_;
opendir D, $dir or die "cannot open directory $dir\n";
map {
if (/([^\/]*?)-([^-]*)-([^-]*)\.([^-]*)(?:\.src)?\.rpm$/) {
if ($rpms->{$1}) {
if (version_compare($rpms->{$1}{version}, $2) > 0 ||
version_compare($rpms->{$1}{version}, $2) == 0 && version_compare($rpms->{$1}{release}, $3) > 0) {
if ($flag->{clean}) {
print "removing obseleted $rpms->{$1}{file} by $_ in $rpms->{$1}{dir}\n" if $flag->{verbose};
rm("$rpms->{$1}{dir}/$rpms->{$1}{file}");
}
$rpms->{$1} = { name => $1,
version => $2,
release => $3,
arch => $4,
dir => $dir,
file => $_,
};
} else {
if ($flag->{clean}) {
print "removing older or equal $_ by $rpms->{$1}{file} in $dir\n" if $flag->{verbose};
rm("$dir/$_");
}
}
} else {
$rpms->{$1} = { name => $1,
version => $2,
release => $3,
arch => $4,
dir => $dir,
file => $_,
};
}
} else {
print STDERR "unable to parse filename $_\n";
}
} grep { /\.rpm$/ } readdir D;
closedir D;
}
#- sync two hashes of rpms, update rpms and printer newer version that are not taken into account.
sub sync_rpms {
my ($source, $target, $flag) = @_;
#- search in source part.
foreach (keys %$source) {
unless ($target->{$_}) {
if ($flag->{verbose}) {
print "adding $source->{$_}{file}" . (-d $flag->{add} ? " to $flag->{add}\n" : " is neccessary!\n");
}
if (-d $flag->{add}) {
cp("$source->{$_}{dir}/$source->{$_}{file}", $flag->{add});
}
}
}
#- search in both part.
foreach (keys %$source) {
if ($target->{$_}) {
if (version_compare($source->{$_}{version}, $target->{$_}{version}) > 0 ||
version_compare($source->{$_}{version}, $target->{$_}{version}) == 0 &&
version_compare($source->{$_}{release}, $target->{$_}{release}) > 0) {
if ($flag->{verbose}) {
print "updating $target->{$_}{dir}/$target->{$_}{file} with newer version $source->{$_}{file}\n";
}
if ($flag->{update}) {
cp("$source->{$_}{dir}/$source->{$_}{file}", $target->{$_}{dir});
unless (-e "$target->{$_}{dir}/$source->{$_}{file}") {
die "unable to copy $source->{$_}{file} from $source->{$_}{dir} into $target->{$_}{dir}\n";
}
rm("$target->{$_}{dir}/$target->{$_}{file}");
}
} elsif (version_compare($source->{$_}{version}, $target->{$_}{version}) != 0 ||
version_compare($source->{$_}{release}, $target->{$_}{release}) != 0) {
if ($flag->{verbose}) {
print STDERR "keeping more up-to-date version $target->{$_}{dir}/$target->{$_}{file} against $source->{$_}{dir}/$source->{$_}{file}, check your repository !\n";
}
} #- say nothing if source is equal to target.
}
}
#- search in target part.
foreach (keys %$target) {
unless ($source->{$_}) {
if ($flag->{verbose}) {
print "removing $target->{$_}{file}" . ($flag->{remove} ? " from $target->{$_}{dir}\n" : " is neccessary!\n")
}
if ($flag->{remove}) {
rm("$target->{$_}{dir}/$target->{$_}{file}");
}
}
}
}
#- main program.
sub main {
my @from_rpms;
my @to_rpms;
my $target_rpms;
my %flag;
my %source;
my %target;
foreach (@_) {
if (/^--(\w*)$/) {
if ($1 eq 'verbose' || $1 eq 'update' || $1 eq 'remove' || $1 eq 'clean') {
$flag{$1} = 1;
} elsif ($1 eq 'add') {
$flag{add} = undef;
} elsif ($1 eq 'from') {
$target_rpms = \@from_rpms;
} elsif ($1 eq 'to') {
$target_rpms = \@to_rpms;
} else {
die "unknown option: $1\n";
}
} else {
if (exists $flag{add} && ! $flag{add}) {
$flag{add} = $_;
die "cannot add to non-directory: $_\n" unless -d $flag{add};
} else {
die "unknown parameter: $_\n" unless $target_rpms;
push @$target_rpms, $_;
}
}
}
die "usage: syncrpms [--update] [--remove] [--clean] [--add <dir>] --from <dir_sources> --to <dir_target>\n"
unless scalar(@from_rpms) > 0 && scalar(@to_rpms) > 0;
#- parse directory structures.
get_rpms($_, \%source, \%flag) foreach @from_rpms;
get_rpms($_, \%target, \%flag) foreach @to_rpms;
print STDERR "reading " . scalar(keys %source) . " packages as source rpms from\n";
print STDERR " $_\n" foreach @from_rpms;
print STDERR "reading " . scalar(keys %target) . " packages as target rpms from\n";
print STDERR " $_\n" foreach @to_rpms;
sync_rpms(\%source, \%target, \%flag);
}
main(@ARGV);
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