mirror of
https://github.com/NixOS/nixpkgs.git
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88 lines
2.2 KiB
Perl
88 lines
2.2 KiB
Perl
# Parses a /nix/store/*-closure file and prints
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# various information.
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# By default, the nodes in the graph are printed to stdout.
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# If the environment variable printManifest is set,
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# then the graph is written as a manifest.
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# If printRegistration is set, then the graph is written
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# as a registration file for a manifest is written
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# in the `nix-store --load-db' format.
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use strict;
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use File::Basename;
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my %storePaths;
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my %refs;
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# Each argument on the command line is a graph file.
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# The graph file contains line-triples and a variable
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# number of references:
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# <store-path>
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# <deriver>
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# <count>
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# <ref-#1>
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# ...
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# <ref-#count>
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foreach my $graph (@ARGV) {
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open GRAPH, "<$graph" or die;
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while (<GRAPH>) {
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chomp;
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my $storePath = "$_";
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$storePaths{$storePath} = 1;
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my $deriver = <GRAPH>; chomp $deriver;
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my $count = <GRAPH>; chomp $count;
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my @refs = ();
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for (my $i = 0; $i < $count; ++$i) {
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my $ref = <GRAPH>; chomp $ref;
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push @refs, $ref;
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}
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$refs{$storePath} = \@refs;
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}
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close GRAPH;
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}
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if ($ENV{"printManifest"} eq "1") {
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print "version {\n";
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print " ManifestVersion: 3\n";
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print "}\n";
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foreach my $storePath (sort (keys %storePaths)) {
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my $base = basename $storePath;
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print "localPath {\n";
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print " StorePath: $storePath\n";
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print " CopyFrom: /tmp/inst-store/$base\n";
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print " References: ";
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foreach my $ref (@{$refs{$storePath}}) {
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print "$ref ";
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}
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print "\n";
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print "}\n";
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}
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}
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elsif ($ENV{"printRegistration"} eq "1") {
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# This is the format used by `nix-store --register-validity
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# --hash-given' / `nix-store --load-db'.
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foreach my $storePath (sort (keys %storePaths)) {
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print "$storePath\n";
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print "0000000000000000000000000000000000000000000000000000000000000000\n"; # !!! fix
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print "0\n"; # !!! fix
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print "\n"; # don't care about preserving the deriver
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print scalar(@{$refs{$storePath}}), "\n";
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foreach my $ref (@{$refs{$storePath}}) {
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print "$ref\n";
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}
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}
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}
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else {
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foreach my $storePath (sort (keys %storePaths)) {
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print "$storePath\n";
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}
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}
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