openssl/util/perl/OpenSSL/copyright.pm

42 lines
1.0 KiB
Perl

#! /usr/bin/env perl
# Copyright 2022 The OpenSSL Project Authors. All Rights Reserved.
#
# Licensed under the Apache License 2.0 (the "License"). You may not use
# this file except in compliance with the License. You can obtain a copy
# in the file LICENSE in the source distribution or at
# https://www.openssl.org/source/license.html
use strict;
use warnings;
package OpenSSL::copyright;
sub year_of {
my $file = shift;
return $ENV{'OSSL_COPYRIGHT_YEAR'} if defined $ENV{'OSSL_COPYRIGHT_YEAR'};
# Use the file date for backward compatibility.
my $YEAR = [localtime([stat($file)]->[9])]->[5] + 1900;
# See if git's available
open my $FH,
"git log -1 --date=short --format=format:%cd $file 2>/dev/null|"
or return $YEAR;
my $LINE = <$FH>;
close $FH;
$LINE =~ s/^([0-9]*)-.*/$1/ if $LINE;
$YEAR = $LINE if $LINE;
return $YEAR;
}
sub latest {
my $l = 0;
foreach my $f (@_ ) {
my $y = year_of($f);
$l = $y if $y > $l;
}
return $l
}
1;