-#!/usr/bin/perl -0777 -pi
+eval '(exit $?0)' && eval 'exec perl -wS -0777 -pi "$0" ${1+"$@"}'
+ & eval 'exec perl -wS -0777 -pi "$0" $argv:q'
+ if 0;
# Update an FSF copyright year list to include the current year.
-my $VERSION = '2009-08-14.02:23'; # UTC
+my $VERSION = '2009-12-28.11:09'; # UTC
-# Copyright (C) 2009 Free Software Foundation, Inc.
+# Copyright (C) 2009-2010 Free Software Foundation, Inc.
#
-# This program is free software; you can redistribute it and/or modify
+# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 3, or (at your option)
# any later version.
# use the update-copyright target rule in maint.mk from gnulib's
# maintainer-makefile module.
#
-# Iff an FSF copyright statement is discovered in a file and the final
+# Iff an FSF copyright statement is recognized in a file and the final
# year is not the current year, then the statement is updated for the
-# new year, 2-digit years are converted to 4-digit years by prepending
-# "19", and the statement is reformatted to fit within 72 columns. A
-# warning is printed for every file for which no FSF copyright statement
-# is discovered.
+# new year and it is reformatted to:
+#
+# 1. Fit within 72 columns.
+# 2. Convert 2-digit years to 4-digit years by prepending "19".
+# 3. Expand copyright year intervals. (See "Environment variables"
+# below.)
+#
+# A warning is printed for every file for which no FSF copyright
+# statement is recognized.
#
# Each file's FSF copyright statement must be formated correctly in
# order to be recognized. For example, each of these is fine:
# 6. Blank lines, even if preceded by the prefix, do not appear
# within the FSF copyright statement.
# 7. Each copyright year is 2 or 4 digits, and years are separated by
-# commas or dashes. Whitespace may occur after commas.
+# commas or dashes. Whitespace may appear after commas.
+#
+# Environment variables:
+#
+# 1. If UPDATE_COPYRIGHT_FORCE=1, a recognized FSF copyright statement
+# is reformatted even if it does not need updating for the new
+# year. If unset or set to 0, only updated FSF copyright
+# statements are reformatted.
+# 2. If UPDATE_COPYRIGHT_USE_INTERVALS=1, every series of consecutive
+# copyright years (such as 90, 1991, 1992-2007, 2008) in a
+# reformatted FSF copyright statement is collapsed to a single
+# interval (such as 1990-2008). If unset or set to 0, all existing
+# copyright year intervals in a reformatted FSF copyright statement
+# are expanded instead.
+# 3. For testing purposes, you can set the assumed current year in
+# UPDATE_COPYRIGHT_YEAR.
+# 4. The default maximum line length for a copyright line is 72.
+# Set UPDATE_COPYRIGHT_MAX_LINE_LENGTH to use a different length.
use strict;
use warnings;
my $circle_c_re = '(?:\([cC]\)|@copyright{}|©)';
my $holder = 'Free Software Foundation, Inc.';
my $prefix_max = 5;
-my $margin = 72;
+my $margin = $ENV{UPDATE_COPYRIGHT_MAX_LINE_LENGTH};
+!$margin || $margin !~ m/^\d+$/
+ and $margin = 72;
+
my $tab_width = 8;
my $this_year = $ENV{UPDATE_COPYRIGHT_YEAR};
$holder_re =~ s/\s/$ws_re/g;
my $stmt_remainder_re =
"(?:$ws_re$circle_c_re)?"
- . "$ws_re(?:(?:\\d\\d)?\\d\\d(,$ws_re?|-))*"
+ . "$ws_re(?:(?:\\d\\d)?\\d\\d(?:,$ws_re?|-))*"
. "((?:\\d\\d)?\\d\\d)$ws_re$holder_re";
if (/\G$stmt_remainder_re/)
{
{
/$stmt_re/ or die; # Should never die.
my $stmt = $1;
- my $sep = $2 ? $2 : "";
- my $final_year_orig = $3;
+ my $final_year_orig = $2;
# Handle two-digit year numbers like "98" and "99".
my $final_year = $final_year_orig;
if ($final_year != $this_year)
{
# Update the year.
- if ($sep eq '-' && $final_year + 1 == $this_year)
- {
- $stmt =~ s/$final_year_orig/$this_year/;
- }
- elsif ($sep ne '-' && $final_year + 1 == $this_year)
- {
- $stmt =~ s/$final_year_orig/$final_year-$this_year/;
- }
- else
- {
- $stmt =~ s/$final_year_orig/$final_year, $this_year/;
- }
-
+ $stmt =~ s/$final_year_orig/$final_year, $this_year/;
+ }
+ if ($final_year != $this_year || $ENV{'UPDATE_COPYRIGHT_FORCE'})
+ {
# Normalize all whitespace including newline-prefix sequences.
$stmt =~ s/$ws_re/ /g;
# Convert 2-digit to 4-digit years.
$stmt =~ s/(\b\d\d\b)/19$1/g;
+ # Make the use of intervals consistent.
+ if (!$ENV{UPDATE_COPYRIGHT_USE_INTERVALS})
+ {
+ $stmt =~ s/(\d{4})-(\d{4})/join(', ', $1..$2)/eg;
+ }
+ else
+ {
+ $stmt =~
+ s/
+ (\d{4})
+ (?:
+ (,\ |-)
+ ((??{
+ if ($2 eq '-') { '\d{4}'; }
+ elsif (!$3) { $1 + 1; }
+ else { $3 + 1; }
+ }))
+ )+
+ /$1-$3/gx;
+ }
+
# Format within margin.
my $stmt_wrapped;
my $text_margin = $margin - length($prefix);
}
# Local variables:
+# mode: perl
# indent-tabs-mode: nil
# eval: (add-hook 'write-file-hooks 'time-stamp)
# time-stamp-start: "my $VERSION = '"