forked from lix-project/lix
cadc3852e4
descriptor templates under the import relation. I.e., we can now
say:
nix-instantiate outdir foo.nix
which will create descriptors for foo.nix and all imported packages
in outdir/.
62 lines
1.5 KiB
Perl
Executable file
62 lines
1.5 KiB
Perl
Executable file
#! /usr/bin/perl -w
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use strict;
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use FileHandle;
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use File::Spec;
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my $outdir = $ARGV[0];
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my %donetmpls = ();
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sub convert {
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my $descr = shift;
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if (defined $donetmpls{$descr}) {
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return $donetmpls{$descr};
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}
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my ($x, $dir, $fn) = File::Spec->splitpath($descr);
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print "$descr\n";
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my $IN = new FileHandle;
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my $OUT = new FileHandle;
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my $outfile = "$outdir/$fn";
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open $IN, "< $descr" or die "cannot open $descr";
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open $OUT, "> $outfile" or die "cannot create $outfile";
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while (<$IN>) {
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chomp;
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if (/^(\w+)\s*=\s*([+\w\d\.\/-]+)\s*(\#.*)?$/) {
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my $name = $1;
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my $file = $2;
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$file = File::Spec->rel2abs($file, $dir);
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my $out = `md5sum $file`;
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die unless ($? == 0);
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$out =~ /^([0-9a-f]+)\s/;
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my $hash = $1;
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print $OUT "$name = $hash\n";
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} elsif (/^(\w+)\s*<-\s*([+\w\d\.\/-]+)\s*(\#.*)?$/) {
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my $name = $1;
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my $file = $2;
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$file = File::Spec->rel2abs($file, $dir);
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$file = convert($file);
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my $out = `md5sum $file`;
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die unless ($? == 0);
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$out =~ /^([0-9a-f]+)\s/;
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my $hash = $1;
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print $OUT "$name <- $hash\n";
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} else {
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print $OUT "$_\n";
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}
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}
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$donetmpls{$descr} = $outfile;
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return $outfile;
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}
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for (my $i = 1; $i < scalar @ARGV; $i++) {
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convert(File::Spec->rel2abs($ARGV[$i]));
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}
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