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|
#!/usr/bin/perl -0777 -pi
# Update b4_copyright invocations or b4_copyright_years definitions to
# include the current year.
# Copyright (C) 2009-2015, 2018-2022 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 <https://www.gnu.org/licenses/>.
use strict;
use warnings;
my $margin = 72;
my $this_year = $ENV{UPDATE_COPYRIGHT_YEAR};
if (!$this_year || $this_year !~ m/^\d{4}$/)
{
my ($sec, $min, $hour, $mday, $month, $year) = localtime (time ());
$this_year = $year + 1900;
}
my $old_re = <<'EOF'
(
(?:^|\n)
#BEFORE
(?:
b4_copyright\(\[[^][]*]
| m4_(?:push|pop)def\(\[b4_copyright_years]
)
#AFTER
)
(?:
,\s*
(
\[\s* (?:\d{4}(?:,\s*|-))* (\d{4}) \s*]
)
)?
\)
EOF
;
while (/($old_re)/gx)
{
my $start = pos() - length ($1);
my $b4_copyright_line = $2;
my $year_lines = $3;
my $final_year = $4;
$year_lines .= ')';
# If there was a second argument, it contains years, so update them.
if ($final_year)
{
$b4_copyright_line .= ',';
if ($final_year != $this_year)
{
# Update the year.
$year_lines =~ s/$final_year/$final_year, $this_year/;
}
# Normalize all whitespace.
$year_lines =~ s/\s+/ /g;
# Put spaces after commas.
$year_lines =~ s/, ?/, /g;
# Compress to intervals.
$year_lines =~
s/
(\d{4})
(?:
(,\ |-)
((??{
if ($2 eq '-') { '\d{4}'; }
elsif (!$3) { $1 + 1; }
else { $3 + 1; }
}))
)+
/$1-$3/gx;
# 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 .= $line;
}
else
{
# Should be unreachable, but we don't want an infinite
# loop if it can be reached.
die;
}
}
# Replace the old invocation. Should never die.
die if (!s/$old_re\G/$b4_copyright_line$year_lines_new/x);
# Prepare for the next search.
pos () = $start + length ("$b4_copyright_line$year_lines_new");
}
}
while (/(\bb4_copyright\()/g)
{
my $start = pos () - length ($1);
my $end = pos ();
my $re = $old_re;
pos () = $start;
$re =~ s/\#BEFORE/\\G/;
if (!/$re/x)
{
my $line = (substr ($_, 0, $start) =~ s/\n/\n/g) + 1;
print STDERR
"$ARGV:$line: warning: failed to update a b4_copyright\n";
}
pos () = $end;
}
while (/(\[b4_copyright_years])/g)
{
my $start = pos () - length ($1);
my $end = pos ();
my $re = $old_re;
$re =~ s/\#AFTER/\\G/;
if (!/$re/x)
{
# The substr operation blows away pos (), so restoring pos ()
# at the end is necessary.
my $line = (substr ($_, 0, $start) =~ s/\n/\n/g) + 1;
print STDERR
"$ARGV:$line: warning: failed to update a"
. " b4_copyright_years\n";
}
pos () = $end;
}
|
