Add 'third_party/nix/' from commit 'be66c7a6b24e3c3c6157fd37b86c7203d14acf10' r/724

git-subtree-dir: third_party/nix
git-subtree-mainline: cf8cd640c1adf74a3706efbcb0ea4625da106fb2
git-subtree-split: be66c7a6b24e3c3c6157fd37b86c7203d14acf10

1 files changed, 95 insertions, 0 deletions

diff --git a/third_party/nix/perl/lib/Nix/Store.pm b/third_party/nix/perl/lib/Nix/Store.pm
new file mode 100644
index 0000000000..d226264d4d
--- /dev/null
+++ b/third_party/nix/perl/lib/Nix/Store.pm
@@ -0,0 +1,95 @@
+package Nix::Store;
+
+use strict;
+use warnings;
+use Nix::Config;
+
+require Exporter;
+
+our @ISA = qw(Exporter);
+
+our %EXPORT_TAGS = ( 'all' => [ qw( ) ] );
+
+our @EXPORT_OK = ( @{ $EXPORT_TAGS{'all'} } );
+
+our @EXPORT = qw(
+    setVerbosity
+    isValidPath queryReferences queryPathInfo queryDeriver queryPathHash
+    queryPathFromHashPart
+    topoSortPaths computeFSClosure followLinksToStorePath exportPaths importPaths
+    hashPath hashFile hashString convertHash
+    signString checkSignature
+    addToStore makeFixedOutputPath
+    derivationFromPath
+    addTempRoot
+);
+
+our $VERSION = '0.15';
+
+sub backtick {
+    open(RES, "-|", @_) or die;
+    local $/;
+    my $res = <RES> || "";
+    close RES or die;
+    return $res;
+}
+
+if ($Nix::Config::useBindings) {
+    require XSLoader;
+    XSLoader::load('Nix::Store', $VERSION);
+} else {
+
+    # Provide slow fallbacks of some functions on platforms that don't
+    # support the Perl bindings.
+
+    use File::Temp;
+    use Fcntl qw/F_SETFD/;
+
+    *hashFile = sub {
+        my ($algo, $base32, $path) = @_;
+        my $res = backtick("$Nix::Config::binDir/nix-hash", "--flat", $path, "--type", $algo, $base32 ? "--base32" : ());
+        chomp $res;
+        return $res;
+    };
+
+    *hashPath = sub {
+        my ($algo, $base32, $path) = @_;
+        my $res = backtick("$Nix::Config::binDir/nix-hash", $path, "--type", $algo, $base32 ? "--base32" : ());
+        chomp $res;
+        return $res;
+    };
+
+    *hashString = sub {
+        my ($algo, $base32, $s) = @_;
+        my $fh = File::Temp->new();
+        print $fh $s;
+        my $res = backtick("$Nix::Config::binDir/nix-hash", $fh->filename, "--type", $algo, $base32 ? "--base32" : ());
+        chomp $res;
+        return $res;
+    };
+
+    *addToStore = sub {
+        my ($srcPath, $recursive, $algo) = @_;
+        die "not implemented" if $recursive || $algo ne "sha256";
+        my $res = backtick("$Nix::Config::binDir/nix-store", "--add", $srcPath);
+        chomp $res;
+        return $res;
+    };
+
+    *isValidPath = sub {
+        my ($path) = @_;
+        my $res = backtick("$Nix::Config::binDir/nix-store", "--check-validity", "--print-invalid", $path);
+        chomp $res;
+        return $res ne $path;
+    };
+
+    *queryPathHash = sub {
+        my ($path) = @_;
+        my $res = backtick("$Nix::Config::binDir/nix-store", "--query", "--hash", $path);
+        chomp $res;
+        return $res;
+    };
+}
+
+1;
+__END__