linux/scripts/parse-maintainers.pl
Linus Torvalds 7683e9e529 Properly alphabetize MAINTAINERS file
This adds a perl script to actually parse the MAINTAINERS file, clean up
some whitespace in it, warn about errors in it, and then properly sort
the end result.

My perl-fu is atrocious, so the script has basically been created by
randomly putting various characters in a pile, mixing them around, and
then looking it the end result does anything interesting when used as a
perl script.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2017-07-23 16:06:21 -07:00

78 lines
1.5 KiB
Perl

#!/usr/bin/perl -w
use strict;
my %map;
# sort comparison function
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;
$a cmp $b;
}
sub alpha_output {
my $key;
my $sort_method = \&by_category;
my $sep = "";
foreach $key (sort $sort_method keys %map) {
if ($key ne " ") {
print $sep . $key . "\n";
$sep = "\n";
}
print $map{$key};
}
}
sub trim {
my $s = shift;
$s =~ s/\s+$//;
$s =~ s/^\s+//;
return $s;
}
sub file_input {
my $lastline = "";
my $case = " ";
$map{$case} = "";
while (<>) {
my $line = $_;
# Pattern line?
if ($line =~ m/^([A-Z]):\s*(.*)/) {
$line = $1 . ":\t" . trim($2) . "\n";
if ($lastline eq "") {
$map{$case} = $map{$case} . $line;
next;
}
$case = trim($lastline);
exists $map{$case} and die "Header '$case' already exists";
$map{$case} = $line;
$lastline = "";
next;
}
if ($case eq " ") {
$map{$case} = $map{$case} . $lastline;
$lastline = $line;
next;
}
trim($lastline) eq "" or die ("Odd non-pattern line '$lastline' for '$case'");
$lastline = $line;
}
$map{$case} = $map{$case} . $lastline;
}
&file_input;
&alpha_output;
exit(0);