[PATCH] parse-maintainers: Add ability to specify filenames

From: Joe Perches
Date: Wed Aug 09 2017 - 00:06:43 EST


parse-maintainers.pl is convenient, but currently hard-code the
filenames that are used.

Allow user-specified filenames to simplify the use of the script.

Miscellanea:

o Change the file permissions to 755 to the script is executable

Signed-off-by: Joe Perches <joe@xxxxxxxxxxx>
---
scripts/parse-maintainers.pl | 52 +++++++++++++++++++++++++++++++++++++++-----
1 file changed, 47 insertions(+), 5 deletions(-)
mode change 100644 => 100755 scripts/parse-maintainers.pl

diff --git a/scripts/parse-maintainers.pl b/scripts/parse-maintainers.pl
old mode 100644
new mode 100755
index e40b53db7f9f..4499cefce348
--- a/scripts/parse-maintainers.pl
+++ b/scripts/parse-maintainers.pl
@@ -1,9 +1,44 @@
#!/usr/bin/perl -w

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, $b) = @_;
@@ -55,13 +90,20 @@ sub trim {
sub alpha_output {
my ($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 " ") {
- chomp $$hashref{$key};
print $file $$hashref{$key};
} else {
- print $file "\n" . $key . "\n";
+ 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");
}
@@ -111,7 +153,7 @@ sub file_input {
my %hash;
my %new_hash;

-file_input(\%hash, "MAINTAINERS");
+file_input(\%hash, $input_file);

foreach my $type (@ARGV) {
foreach my $key (keys %hash) {
@@ -122,7 +164,7 @@ foreach my $type (@ARGV) {
}
}

-alpha_output(\%hash, "MAINTAINERS.new");
-alpha_output(\%new_hash, "SECTION.new");
+alpha_output(\%hash, $output_file);
+alpha_output(\%new_hash, $output_section);

exit(0);
--
2.10.0.rc2.1.g053435c