#!/usr/bin/perl

BEGIN {
  unshift @INC, ($::ENV{'BUILD_DIR'} || '/usr/lib/build');
}

use Build;
use strict;

my $createmeta;
my $manifest;

while (@ARGV) {
  if ($ARGV[0] eq '--createmeta')
    {
      shift @ARGV;
      $createmeta = 1;
      next;
    }
  if ($ARGV[0] eq '--manifest')
    {
      shift @ARGV;
      $manifest = shift @ARGV;
      next;
    }
  last;
}

my @files;
if ($manifest) {
  if ($manifest eq '-') {
    @files = <STDIN>;
  } else {
    local *F;
    open(F, '<', $manifest) || die("$manifest: $!\n");
    @files = <F>;
    close F;
  }
  chomp @files;
}
push @files, @ARGV;

for my $file (@files) {
  my $sig = Build::queryhdrmd5($file);
  die("$file: no signature available\n") unless $sig;
  if ($createmeta) {
    local *F;
    my $mf = $file;
    $mf =~ s/\.[^\.]*$//;
    $mf .= ".meta";
    open(F, '>', $mf) || die("$mf: $!\n");
    print F "$sig  sigmd5\n";
    close(F) || die("$mf: $!\n");
  } else {
    print "$sig\n";
  }
}