linux-kernel - [PATCH 2/7] scripts/get_maintainer.pl: Add sections in pattern match depth order

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Date:	Wed,  5 Aug 2009 19:43:43 -0700
From:	Joe Perches <joe@...ches.com>
To:	linux-kernel@...r.kernel.org
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	Julia Lawall <julia@...u.dk>, Greg KH <greg@...ah.com>
Subject: [PATCH 2/7] scripts/get_maintainer.pl: Add sections in pattern match depth order

Before this change, matched sections were added in the order
of appearance in the normally alphabetic section order of
the MAINTAINERS file.

For instance, finding the maintainer for drivers/scsi/wd7000.c
would first find "SCSI SUBSYSTEM", then "WD7000 SCSI SUBSYSTEM",
then "THE REST".

before patch:

$ ./scripts/get_maintainer.pl --nogit -f drivers/scsi/wd7000.c
James E.J. Bottomley <James.Bottomley@...senPartnership.com>
Miroslav Zagorac <zaga@....cc.fer.hr>
linux-scsi@...r.kernel.org
linux-kernel@...r.kernel.org

get_maintainer.pl now selects matched sections by longest pattern match.
Longest is the number of "/"s and any specific file pattern.

This changes the example output order of MAINTAINERS to whatever is
selected in "WD7000 SUBSYSTEM", then "SCSI SYSTEM", then "THE REST".

after patch:

$ ./scripts/get_maintainer.pl --nogit -f drivers/scsi/wd7000.c
Miroslav Zagorac <zaga@....cc.fer.hr>
James E.J. Bottomley <James.Bottomley@...senPartnership.com>
linux-scsi@...r.kernel.org
linux-kernel@...r.kernel.org

Signed-off-by: Joe Perches <joe@...ches.com>
---
 scripts/get_maintainer.pl |    9 ++++++++-
 1 files changed, 8 insertions(+), 1 deletions(-)

diff --git a/scripts/get_maintainer.pl b/scripts/get_maintainer.pl
index 35781e0..fb446e0 100755
--- a/scripts/get_maintainer.pl
+++ b/scripts/get_maintainer.pl
@@ -211,6 +211,7 @@ foreach my $file (@files) {
 	    if ($type eq 'X') {
 		if (file_match_pattern($file, $value)) {
 		    $exclude = 1;
+		    last;
 		}
 	    }
 	}
@@ -218,18 +219,24 @@ foreach my $file (@files) {

     if (!$exclude) {
 	my $tvi = 0;
+	my %hash;
 	foreach my $line (@typevalue) {
 	    if ($line =~ m/^(\C):\s*(.*)/) {
 		my $type = $1;
 		my $value = $2;
 		if ($type eq 'F') {
 		    if (file_match_pattern($file, $value)) {
-			add_categories($tvi);
+			my $pattern_depth = ($value =~ tr@/@@);
+			$pattern_depth++ if (!(substr($value,-1,1) eq "/"));
+			$hash{$tvi} = $pattern_depth;
 		    }
 		}
 	    }
 	    $tvi++;
 	}
+	foreach my $line (sort {$hash{$b} <=> $hash{$a}} keys %hash) {
+	    add_categories($line);
+	}
     }

     if ($email && $email_git) {
-- 
1.6.3.1.10.g659a0.dirty

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