118 lines
3.1 KiB
Plaintext
118 lines
3.1 KiB
Plaintext
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#!/usr/bin/perl
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#
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# This is a hacked version of gettext.pm from Debian's strip-nondeterminism project.
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# It is a workaround for https://savannah.gnu.org/bugs/?49654
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#
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# Copyright 2016 Reiner Herrmann <reiner@reiner-h.de>
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# Copyright 2016 Chris Lamb <lamby@debian.org>
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#
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# This file is part of strip-nondeterminism.
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#
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# strip-nondeterminism is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# strip-nondeterminism is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with strip-nondeterminism. If not, see <http://www.gnu.org/licenses/>.
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#
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use Time::Piece;
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use POSIX qw(strftime);
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use strict;
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use warnings;
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=head1 DEPRECATION PLAN
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Situation unclear. Whilst #792687 is closed, many Gettext related files are
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being normalised based on anecdotal viewings of build logs.
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=cut
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sub read_file($) {
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my $filename = shift;
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local $/ = undef;
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open(my $fh, '<', $filename)
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or die "Can't open file $filename for reading: $!";
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binmode($fh);
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my $buf = <$fh>;
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close($fh);
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return $buf;
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}
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sub normalize {
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my ($mo_filename, %options) = @_;
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my $fmt;
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my $buf = read_file($mo_filename);
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my $magic = unpack("V", substr($buf, 0*4, 4));
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if ($magic == 0x950412DE) {
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# little endian
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$fmt = "V";
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} elsif ($magic == 0xDE120495) {
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# big endian
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$fmt = "N";
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} else {
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# unknown format
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return 0;
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}
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my ($revision, $nstrings, $orig_to, $trans_to)
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= unpack($fmt x 4, substr($buf, 1*4, 4*4));
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my $major = int($revision / 256);
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my $minor = int($revision % 256);
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return 0 if $major > 1;
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my $modified = 0;
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for (my $i=0; $i < $nstrings; $i++) {
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my $len = unpack($fmt, substr($buf, $orig_to + $i*8, 4));
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next if $len > 0;
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my $offset = unpack($fmt, substr($buf, $orig_to + $i*8 + 4, 4));
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my $trans_len = unpack($fmt, substr($buf, $trans_to + $i*8));
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my $trans_offset = unpack($fmt, substr($buf, $trans_to + $i*8 + 4));
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my $trans_msg = substr($buf, $trans_offset, $trans_len);
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next unless $trans_msg =~ m/^POT-Creation-Date: (.*)/m;
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my $pot_date = $1;
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my $time;
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eval {$time = Time::Piece->strptime($pot_date, "%Y-%m-%d %H:%M%z");};
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next if $@;
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my $new_time = strftime("%Y-%m-%d %H:%M+0000", gmtime(0));
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$trans_msg
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=~ s/\QPOT-Creation-Date: $pot_date\E/POT-Creation-Date: $new_time/;
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print("Replaced POT-Creation-Date $pot_date with $new_time.\n");
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next if length($trans_msg) != $trans_len;
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$buf
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= substr($buf, 0, $trans_offset)
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. $trans_msg
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. substr($buf, $trans_offset + $trans_len);
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$modified = 1;
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}
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if ($modified) {
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open(my $fh, '>', $mo_filename)
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or die "Can't open file $mo_filename for writing: $!";
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binmode($fh);
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print $fh $buf;
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close($fh);
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}
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return $modified;
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}
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print("Removing timestamp from " . $ARGV[0] . "...\n");
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normalize($ARGV[0])
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