+#!/usr/bin/perl -0777 -pi
+# Update an b4_copyright invocation to include the current year.
+
+# Copyright (C) 2009 Free Software Foundation, Inc.
+#
+# 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.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program. If not, see <http://www.gnu.org/licenses/>.
+
+use strict;
+use warnings;
+
+my $this_year = $ENV{UPDATE_COPYRIGHT_YEAR};
+if (!$this_year || $this_year !~ m/^\d\d(\d\d)?$/)
+ {
+ my ($sec, $min, $hour, $mday, $month, $year) = localtime (time ());
+ $this_year = $year + 1900;
+ }
+my $margin = 72;
+my $old_re = <<'EOF'
+ (
+ (?:^|\n)
+ (?:
+ b4_copyright\(\[[^]]*]
+ | m4_(?:push|pop)def\(\[b4_copyright_years]
+ )
+ )
+ (?:
+ ,\s*
+ (
+ \[\s* (?:\d{4}(,\s*|-))* (\d{4}) \s*]
+ )
+ )?
+ \)
+EOF
+ ;
+
+while (/$old_re/x)
+ {
+ my $b4_copyright_line = $1;
+ my $year_lines = $2;
+ my $sep = $3 ? $3 : "";
+ my $final_year = $4;
+ $year_lines .= ')';
+
+ # Mark it completed.
+ $b4_copyright_line =~ s/b4_/b4*/g;
+
+ # If there was a second argument, it contains years, so update them.
+ if ($final_year)
+ {
+ $b4_copyright_line .= ',';
+ if ($final_year != $this_year)
+ {
+ # Update the year.
+ if ($sep eq '-' && $final_year + 1 == $this_year)
+ {
+ $year_lines =~ s/$final_year/$this_year/;
+ }
+ elsif ($sep ne '-' && $final_year + 1 == $this_year)
+ {
+ $year_lines =~ s/$final_year/$final_year-$this_year/;
+ }
+ else
+ {
+ $year_lines =~ s/$final_year/$final_year, $this_year/;
+ }
+ }
+
+ # Normalize all whitespace.
+ $year_lines =~ s/\s+/ /g;
+
+ # Put spaces after commas.
+ $year_lines =~ s/, ?/, /g;
+
+ # Format within margin.
+ my $year_lines_new;
+ my $indent = index ($b4_copyright_line, '[');
+ --$indent if ($b4_copyright_line =~ m/^\n/);
+ while (length $year_lines)
+ {
+ my $text_margin = $margin - $indent;
+ if (($year_lines =~ s/^(.{1,$text_margin})(?: |$)//)
+ || ($year_lines =~ s/^([\S]+)(?: |$)//))
+ {
+ my $line = "\n" . (' 'x$indent) . $1;
+ ++$indent if (!$year_lines_new);
+ $year_lines_new .= $line;
+ }
+ else
+ {
+ # Should be unreachable, but we don't want an infinite
+ # loop if it can be reached.
+ die;
+ }
+ }
+ $year_lines = $year_lines_new;
+ }
+
+ # Replace the old invocation.
+ s/$old_re/$b4_copyright_line$year_lines/x;
+ }
+
+if (/\bb4_copyright\(/)
+ {
+ print STDERR
+ "$ARGV: warning: failed to update a b4_copyright invocation\n";
+ }
+if (/\[b4_copyright_years]/)
+ {
+ print STDERR
+ "$ARGV: warning: failed to update a b4_copyright_years use\n";
+ }
+
+s/b4\*copyright/b4_copyright/g;
projects / bison.git / commitdiff
