128 lines · 2.7 KB · Perl
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#!/usr/bin/perl -w use strict; my $P = $0; # sort comparison functionssub 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) = (@_);     open(my $file, '>', "$filename") or die "$P: $filename: open failed - $!\n";    foreach my $key (sort by_category keys %$hashref) {	if ($key eq " ") {	    chomp $$hashref{$key};	    print $file $$hashref{$key};	} else {	    print $file "\n" . $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, "MAINTAINERS"); 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, "MAINTAINERS.new");alpha_output(\%new_hash, "SECTION.new"); exit(0);