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#!/usr/bin/env perl
#
# InspIRCd -- Internet Relay Chat Daemon
#
# Copyright (C) 2020-2025 Sadie Powell <sadie@witchery.services>
#
# This file is part of InspIRCd. InspIRCd 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, version 2.
#
# 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 v5.26.0;
use strict;
use warnings FATAL => qw(all);
use File::Basename qw(dirname);
use File::Util ();
use FindBin qw($RealDir);
use List::Util qw(uniq);
use POSIX qw(strftime);
use lib dirname $RealDir;
use make::common;
use make::console;
my @ignored_revisions = (
'46a39046196f55b52336e19662bb7bac85b731ac', # adding copyright headers
'4a6fedd9324d87349a806c9c1d0ae6e7d3c1fd38', # mass-updating descriptions
'bab14f0dd2345c9d7dcbc47c918563709e1ac094', # peavey breaking line endings
'de6d4dbd1e8845e08c2d87cd89a919e5b21ba619', # jsoref fixing a ton of typos
'f2acdbc3820f0f4f5ef76a0a64e73d2a320df91f', # peavey fixing line endings
);
sub make_range($@) {
my ($separator, @nums) = @_;
my ($last_num, $start_num, @num_ranges);
for my $num (uniq sort { $a <=> $b } @nums) {
if (!defined $last_num) {
$start_num = $last_num = $num
} elsif ($num == $last_num + 1) {
$last_num = $num;
} else {
if ($last_num == $start_num) {
push @num_ranges, $last_num;
} else {
push @num_ranges, "$start_num$separator$last_num";
}
$start_num = $last_num = $num;
}
}
if (defined $last_num) {
if ($last_num == $start_num) {
push @num_ranges, $last_num;
} else {
push @num_ranges, "$start_num$separator$last_num";
}
}
return @num_ranges;
}
my @paths = File::Util->new->list_dir(dirname($RealDir) => { recurse => 1 });
my @updated;
for my $path (@paths) {
next unless -f $path;
next if $path =~ /\/\./;
next if $path =~ /\/build\//;
next if $path =~ /\/vendor\//;
if (system "git ls-files --error-unmatch -- $path 1>/dev/null 2>/dev/null") {
say STDERR console_format "Skipping <|YELLOW $path|> as it has not been committed." if defined $ENV{MKHEADERS_VERBOSE};
next;
}
open(my $fh, $path) or print_error "unable to read from $path: $!";
my ($copyright, $indent, $linenum, @linenums, @lines);
for my $line (<$fh>) {
$linenum += 1;
chomp $line;
if ($line =~ /^([^0-9A-Za-z]+\s)Copyright\s+\(C\)\s+[^<]+(\s+<[^>]+>)?[\r\s]*$/) {
$copyright = scalar @lines;
$indent = $1;
} else {
push @lines, $line;
push(@linenums, $linenum) if $line =~ /\S/;
}
}
close $fh;
if (defined $copyright) {
say console_format "Updating copyright headers in <|GREEN $path|>." if defined $ENV{MKHEADERS_VERBOSE};
my (%authors, $commit, %commits);
my $ignored_args = join ' ', map { "--ignore-rev $_" } @ignored_revisions;
my $line_args = join ' ', map { "-L $_" } make_range ',', @linenums;
for my $line (split /\n+/, `git blame $ignored_args $line_args --incremental -M -w HEAD -- $path`) {
if ($line =~ /^([0-9a-f]{40})(?:\s\d+){3}$/) {
$commit = $1;
$commits{$commit} //= {};
} elsif ($line =~ /^author (.+)/) {
$commits{$commit}->{NAME} = $1;
} elsif ($line =~ /^author-mail <(.+)>/) {
next if $1 eq 'unknown@email.invalid';
next if $1 =~ /\@users.noreply.github.com$/;
$commits{$commit}->{EMAIL} = $1;
} elsif ($line =~ /^author-time (.+)/) {
$commits{$commit}->{YEAR} = strftime '%Y', gmtime $1;
} elsif ($line =~ /^filename /) {
my $display = $commits{$commit}->{NAME};
if (exists $commits{$commit}->{EMAIL}) {
$display .= sprintf " <%s>", $commits{$commit}->{EMAIL};
}
$authors{$display} //= [];
push @{$authors{$display}}, $commits{$commit}->{YEAR};
my $details = `git rev-list --format=%B --max-count=1 $commit`;
while ($details =~ /co-authored-by: ([^<]+<[^>]+>)/gi) {
open(my $fh, '-|', 'git', 'check-mailmap', $1);
chomp(my $coauthor = <$fh>);
close $fh;
my $year = $details =~ /co-authored-year: (\d+)/i ? $1 : $commits{$commit}->{YEAR};
$authors{$coauthor} //= [];
push @{$authors{$coauthor}}, $year;
}
undef $commit;
}
}
my @copyrights;
while (my ($display, $years) = each %authors) {
next if $display eq 'InspIRCd Robot <noreply@inspircd.org>';
my @year_ranges = make_range '-', @$years;
my $joined_years = join ', ', @year_ranges;
push @copyrights, "${\$indent}Copyright (C) $joined_years $display";
}
splice @lines, $copyright, 0, reverse sort @copyrights;
open(my $fh, '>', $path) or print_error "unable to write to $path: $!";
for my $line (@lines) {
say $fh $line;
}
close $fh;
push @updated, $path;
} else {
say STDERR console_format "Skipping <|YELLOW $path|> as it contains no copyright headers." if defined $ENV{MKHEADERS_VERBOSE};
}
}
if ($ENV{MKHEADERS_COMMIT} // 1) {
execute 'git', 'commit',
'--author', 'InspIRCd Robot <noreply@inspircd.org>',
'--message', 'Update copyright headers.',
'--', @updated;
}
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