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