Viewing file:  parse-maintainers.pl (3.72 KB) -rwxr-xr-x
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#!/usr/bin/perl -w
# SPDX-License-Identifier: GPL-2.0
use strict;
use Getopt::Long qw(:config no_auto_abbrev);
my $input_file = "MAINTAINERS";
my $output_file = "MAINTAINERS.new";
my $output_section = "SECTION.new";
my $help = 0;
my $P = $0;
if (!GetOptions(
'input=s' => \$input_file,
'output=s' => \$output_file,
'section=s' => \$output_section,
'h|help|usage' => \$help,
)) {
die "$P: invalid argument - use --help if necessary\n";
}
if ($help != 0) {
usage();
exit 0;
}
sub usage {
print <<EOT;
usage: $P [options] <pattern matching regexes>
--input => MAINTAINERS file to read (default: MAINTAINERS)
--output => sorted MAINTAINERS file to write (default: MAINTAINERS.new)
--section => new sorted MAINTAINERS file to write to (default: SECTION.new)
If <pattern match regexes> exist, then the sections that match the
regexes are not written to the output file but are written to the
section file.
EOT
}
# sort comparison functions
sub by_category($$) {
my ($a, $b) = @_;
$a = uc $a;
$b = uc $b;
# This always sorts last
$a =~ s/THE REST/ZZZZZZ/g;
$b =~ s/THE REST/ZZZZZZ/g;
return $a cmp $b;
}
sub by_pattern($$) {
my ($a, $b) = @_;
my $preferred_order = 'MRPLSWTQBCFXNK';
my $a1 = uc(substr($a, 0, 1));
my $b1 = uc(substr($b, 0, 1));
my $a_index = index($preferred_order, $a1);
my $b_index = index($preferred_order, $b1);
$a_index = 1000 if ($a_index == -1);
$b_index = 1000 if ($b_index == -1);
if (($a1 =~ /^F$/ && $b1 =~ /^F$/) ||
($a1 =~ /^X$/ && $b1 =~ /^X$/)) {
return $a cmp $b;
}
if ($a_index < $b_index) {
return -1;
} elsif ($a_index == $b_index) {
return 0;
} else {
return 1;
}
}
sub trim {
my $s = shift;
$s =~ s/\s+$//;
$s =~ s/^\s+//;
return $s;
}
sub alpha_output {
my ($hashref, $filename) = (@_);
return if ! scalar(keys %$hashref);
open(my $file, '>', "$filename") or die "$P: $filename: open failed - $!\n";
my $separator;
foreach my $key (sort by_category keys %$hashref) {
if ($key eq " ") {
print $file $$hashref{$key};
} else {
if (! defined $separator) {
$separator = "\n";
} else {
print $file $separator;
}
print $file $key . "\n";
foreach my $pattern (sort by_pattern split('\n', %$hashref{$key})) {
print $file ($pattern . "\n");
}
}
}
close($file);
}
sub file_input {
my ($hashref, $filename) = (@_);
my $lastline = "";
my $case = " ";
$$hashref{$case} = "";
open(my $file, '<', "$filename") or die "$P: $filename: open failed - $!\n";
while (<$file>) {
my $line = $_;
# Pattern line?
if ($line =~ m/^([A-Z]):\s*(.*)/) {
$line = $1 . ":\t" . trim($2) . "\n";
if ($lastline eq "") {
$$hashref{$case} = $$hashref{$case} . $line;
next;
}
$case = trim($lastline);
exists $$hashref{$case} and die "Header '$case' already exists";
$$hashref{$case} = $line;
$lastline = "";
next;
}
if ($case eq " ") {
$$hashref{$case} = $$hashref{$case} . $lastline;
$lastline = $line;
next;
}
trim($lastline) eq "" or die ("Odd non-pattern line '$lastline' for '$case'");
$lastline = $line;
}
$$hashref{$case} = $$hashref{$case} . $lastline;
close($file);
}
my %hash;
my %new_hash;
file_input(\%hash, $input_file);
foreach my $type (@ARGV) {
foreach my $key (keys %hash) {
if ($key =~ /$type/ || $hash{$key} =~ /$type/) {
$new_hash{$key} = $hash{$key};
delete $hash{$key};
}
}
}
alpha_output(\%hash, $output_file);
alpha_output(\%new_hash, $output_section);
exit(0);
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