Auto-committed schema changes.

[wannabuild.git] / bin / keep-latest

diff --git a/bin/keep-latest b/bin/keep-latest
index c66c41b1200a02a8330ff15287ef0ef871fc82e4..ebc4fa9d7d048c7c03a002283ace2edf897cbdb4 100755 (executable)
--- a/bin/keep-latest
+++ b/bin/keep-latest
@@ -3,44 +3,72 @@
 use strict;
 use warnings;
 
+use lib '/org/wanna-build/lib';
 use WannaBuild; # for version compare
 
 if (!@ARGV) {
-       print STDERR "Usage: $0 Packages1 Packages2 ..\n";
+       print STDERR "Usage: $0 arch Packages1 Packages2 ..\n";
        print STDERR "\n";
        print STDERR "This perl scripts reads the Packages files given on the command line and\n";
-       print STDERR "outputs a Packages file which contians each package/architecture pair at most\n";
+       print STDERR "outputs a Packages file which contians each package at most\n";
        print STDERR "once, using the one with the highest version number.\n";
        print STDERR "";
        print STDERR "Since it only looks at Package:, Version: and Architecture:, it works with\n";
        print STDERR "Sources files as well\n";
+       print STDERR "\n";
+       print STDERR "It throws out any package not arch \"all\" or the given architecture.\n";
+       print STDERR "Pass \"source\" to keep all entries.\n";
+
        exit 1;
 }
 
 my %version;
 my %data;
 
-local($/) = ""; # read in paragraph mode
-while (<>) {
-       my( $version, $name, $architecture );
-       $architecture="none"; # better to keep an entry too much than to delete an entry
-       /^Package:\s*(\S+)$/mi and $name = $1;
-       /^Version:\s*(\S+)$/mi and $version = $1;
-       /^Architecture:\s*(\S+)$/mi and $architecture = $1;
-       if (!defined $name or !defined $version) {
-               warn "Stanza without Package or Version\n";
+my $arch = shift @ARGV;
+
+#Read in all data files:
+for my $file (@ARGV) {
+       if (! -f $file) {
                next;
        }
-       my $key = $name."_".$architecture;
+       my $fh;
+       if ($file =~ /.gz$/) {
+               open($fh, '-|', 'gzip', '-d', '-c', $file) 
+                       or die("Can't open pipe from gzip: $!");
+       } else {
+               open($fh, '<', $file)
+                       or die("Can't open $file: $!");
+       }
+
+       local($/) = ""; # read in paragraph mode
+       while (<$fh>) {
+               my( $version, $name, $architecture );
+               $architecture="none"; # better to keep an entry too much than to delete an entry
+               /^Package:\s*(\S+)$/mi and $name = $1;
+               /^Version:\s*(\S+)$/mi and $version = $1;
+               /^Architecture:\s*(\S+)$/mi and $architecture = $1;
+               if (!defined $name or !defined $version) {
+                       warn "Stanza without Package or Version\n";
+                       next;
+               }
+               if ($arch ne "source" && defined $architecture && $architecture ne "all" && $architecture ne $arch) {
+                       next;
+               }
+               my $key = $name;
 
-       if ((!exists $version{$key}) or version_less($version{$key},$version)) {
-               $version{$key} = $version;
-               $data{$key} = $_;
+               if ((!exists $version{$key}) or version_less($version{$key},$version)) {
+                       $version{$key} = $version;
+                       $data{$key} = $_;
+               }
        }
+
+       close($fh);
 }
 
+#Now output the shortened list:
 foreach (values %data) {
-       s/\n*$/\n\n/;# always one empty line to separate stanzas
+       chomp; chomp; $_ .= "\n\n";
        print;
 }