build-aux/update-package-copyright-year

   1 #!/usr/bin/perl -0777 -pi
   2
   3 # In configure.ac, update PACKAGE_COPYRIGHT_YEAR to the current year.
   4
   5 # Copyright (C) 2010-2015, 2018-2021 Free Software Foundation, Inc.
   6 #
   7 # This program is free software; you can redistribute it and/or modify
   8 # it under the terms of the GNU General Public License as published by
   9 # the Free Software Foundation; either version 3, or (at your option)
  10 # any later version.
  11 #
  12 # This program is distributed in the hope that it will be useful,
  13 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 # GNU General Public License for more details.
  16 #
  17 # You should have received a copy of the GNU General Public License
  18 # along with this program.  If not, see <https://www.gnu.org/licenses/>.
  19
  20 use strict;
  21 use warnings;
  22
  23 my $this_year = $ENV{UPDATE_COPYRIGHT_YEAR};
  24 if (!$this_year || $this_year !~ m/^\d{4}$/)
  25   {
  26     my ($sec, $min, $hour, $mday, $month, $year) = localtime (time ());
  27     $this_year = $year + 1900;
  28   }
  29 my $old_re = <<'EOF'
  30   (
  31     MACRO\(
  32     \[PACKAGE_COPYRIGHT_YEAR],
  33     \s*\[
  34   )
  35   (\d{4})
  36   (?=])
  37 EOF
  38   ;
  39 foreach my $macro ("AC_DEFINE", "AC_SUBST")
  40   {
  41     my $this_old_re = $old_re;
  42     $this_old_re =~ s/MACRO/$macro/;
  43     if (!s/$this_old_re/$1$this_year/x)
  44       {
  45         print STDERR
  46           "$ARGV: warning: failed to update PACKAGE_COPYRIGHT_YEAR in"
  47           . " $macro.\n";
  48       }
  49   }