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Message-Id: <b18ddc42b6d31d3e22f0d9ce867181f31196b792.1249525834.git.joe@perches.com>
Date:	Wed,  5 Aug 2009 19:43:44 -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 3/7] scripts/get_maintainer.pl: Add --pattern-depth

--pattern-depth is used to control how many levels of directory traversal
should be performed to find maintainers.  default is 0 (all directory levels).

For instance:

MAINTAINERS currently has multiple M: and F: entries that match
net/netfilter/ipvs/ip_vs_app.c

IPVS
M:	Wensong Zhang <wensong@...ux-vs.org>
M:	Simon Horman <horms@...ge.net.au>
M:	Julian Anastasov <ja@....bg>
[...]
F:	net/netfilter/ipvs/

NETFILTER/IPTABLES/IPCHAINS
[...]
M:	Patrick McHardy <kaber@...sh.net>
[...]
F:	net/netfilter/

NETWORKING [GENERAL]
M:	"David S. Miller" <davem@...emloft.net>
[...]
F:	net/

THE REST
M:	Linus Torvalds <torvalds@...ux-foundation.org>
[...]
F:	*/

Using this command will return all of those maintainers:
(except Linus unless --git-chief-maintainers is specified)

$ ./scripts/get_maintainer.pl --nogit -nol \
	-f net/netfilter/ipvs/ip_vs_app.c
Julian Anastasov <ja@....bg>
Simon Horman <horms@...ge.net.au>
Wensong Zhang <wensong@...ux-vs.org>
Patrick McHardy <kaber@...sh.net>
David S. Miller <davem@...emloft.net>

Adding --pattern-depth=1 will match at the deepest level
$ ./scripts/get_maintainer.pl --nogit -nol --pattern-depth=1 \
	-f net/netfilter/ipvs/ip_vs_app.c
Julian Anastasov <ja@....bg>
Simon Horman <horms@...ge.net.au>
Wensong Zhang <wensong@...ux-vs.org>

Adding --pattern-depth=2 will match at the deepest level and 1 higher
$ ./scripts/get_maintainer.pl --nogit -nol --pattern-depth=2 \
	-f net/netfilter/ipvs/ip_vs_app.c
Julian Anastasov <ja@....bg>
Simon Horman <horms@...ge.net.au>
Wensong Zhang <wensong@...ux-vs.org>
Patrick McHardy <kaber@...sh.net>

and so on.

Signed-off-by: Joe Perches <joe@...ches.com>
---
 scripts/get_maintainer.pl |   21 ++++++++++++++-------
 1 files changed, 14 insertions(+), 7 deletions(-)

diff --git a/scripts/get_maintainer.pl b/scripts/get_maintainer.pl
index fb446e0..5132949 100755
--- a/scripts/get_maintainer.pl
+++ b/scripts/get_maintainer.pl
@@ -13,7 +13,7 @@
 use strict;
 
 my $P = $0;
-my $V = '0.18beta2';
+my $V = '0.19';
 
 use Getopt::Long qw(:config no_auto_abbrev);
 
@@ -37,6 +37,7 @@ my $web = 0;
 my $subsystem = 0;
 my $status = 0;
 my $from_filename = 0;
+my $pattern_depth = 0;
 my $version = 0;
 my $help = 0;
 
@@ -80,6 +81,7 @@ if (!GetOptions(
 		'status!' => \$status,
 		'scm!' => \$scm,
 		'web!' => \$web,
+		'pattern-depth=i' => \$pattern_depth,
 		'f|file' => \$from_filename,
 		'v|version' => \$version,
 		'h|help' => \$help,
@@ -226,9 +228,13 @@ foreach my $file (@files) {
 		my $value = $2;
 		if ($type eq 'F') {
 		    if (file_match_pattern($file, $value)) {
-			my $pattern_depth = ($value =~ tr@/@@);
-			$pattern_depth++ if (!(substr($value,-1,1) eq "/"));
-			$hash{$tvi} = $pattern_depth;
+			my $value_pd = ($value =~ tr@/@@);
+			my $file_pd = ($file  =~ tr@/@@);
+			$value_pd++ if (substr($value,-1,1) ne "/");
+			if ($pattern_depth == 0 ||
+			    (($file_pd - $value_pd) < $pattern_depth)) {
+			    $hash{$tvi} = $value_pd;
+			}
 		    }
 		}
 	    }
@@ -345,13 +351,14 @@ Output type options:
   --separator [, ] => separator for multiple entries on 1 line
   --multiline => print 1 entry per line
 
-Default options:
-  [--email --git --m --n --l --multiline]
-
 Other options:
+  --pattern-depth => Number of pattern directory traversals (default: 0 (all))
   --version => show version
   --help => show this help information
 
+Default options:
+  [--email --git --m --n --l --multiline --pattern-depth=0]
+
 Notes:
   Using "-f directory" may give unexpected results:
       Used with "--git", git signators for _all_ files in and below
-- 
1.6.3.1.10.g659a0.dirty

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