linux-kernel - Re: [PATCH] scripts: add checkmaintainers.py

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Message-ID: <1355770579.13361.41.camel@joe-AO722>
Date:	Mon, 17 Dec 2012 10:56:19 -0800
From:	Joe Perches <joe@...ches.com>
To:	Borislav Petkov <bp@...en8.de>
Cc:	Michal Marek <mmarek@...e.cz>,
	Cesar Eduardo Barros <cesarb@...arb.net>,
	linux-kernel@...r.kernel.org, linux-kbuild@...r.kernel.org,
	Andrew Morton <akpm@...ux-foundation.org>,
	David Howells <dhowells@...hat.com>
Subject: Re: [PATCH] scripts: add checkmaintainers.py

On Mon, 2012-12-17 at 18:00 +0100, Borislav Petkov wrote:
> On Mon, Dec 17, 2012 at 07:35:44AM -0800, Joe Perches wrote:
> > Perhaps Cesar can use his script as a starting point to find those
> > pattern invalidating commits or maybe add the capability (or a
> > --strict check) to checkpatch.
> 
> Or that, I don't have a strict preference.
> 
> So, yeah, I can see how checkpatch saying: "you've just renamed a
> file and thusly invalidated a pattern in MAINTAINERS. Pls, consider
> correcting the pattern" could make sense. And I would even add it to
> default functionality since the MAINTAINERS patterns are something we
> want to always have up-to-date, IMO.

Maybe something like this:

 scripts/checkpatch.pl |   20 ++++++++++++++++++--
 1 files changed, 18 insertions(+), 2 deletions(-)

diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index 725c596..a7dddc1 100755
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -1379,6 +1379,7 @@ sub process {
 	# Trace the real file/line as we go.
 	my $realfile = '';
 	my $realline = 0;
+	my $modifiedfile = '';
 	my $realcnt = 0;
 	my $here = '';
 	my $in_comment = 0;
@@ -1536,8 +1537,10 @@ sub process {
 		$here = "#$realline: " if ($file);
 
 		# extract the filename as it passes
-		if ($line =~ /^diff --git.*?(\S+)$/) {
-			$realfile = $1;
+		if ($line =~ /^diff --git\s+(\S+)\s+(\S+)$/) {
+			$modifiedfile = $1;
+			$realfile = $2;
+			$modifiedfile =~ s@^([^/]*)/@@;
 			$realfile =~ s@^([^/]*)/@@;
 			$in_commit_log = 0;
 		} elsif ($line =~ /^\+\+\+\s+(\S+)/) {
@@ -1556,6 +1559,19 @@ sub process {
 				ERROR("MODIFIED_INCLUDE_ASM",
 				      "do not modify files in include/asm, change architecture specific files in include/asm-<architecture>\n" . "$here$rawline\n");
 			}
+
+			my $action = "renames $modifiedfile to $realfile";
+			$action = "creates file $realfile" if ($modifiedfile =~ m@.../null@);
+			$action = "deletes file $modifiedfile" if ($realfile =~ m@.../null@);
+
+			CHK("MAINTAINERS",
+			    "Patch $action, update MAINTAINERS?\n");
+
+			next;
+		} elsif ($line =~ /^\-\-\-\s+(\S+)/) {
+			$modifiedfile = $1;
+			$modifiedfile =~ s@^([^/]*)/@@;
+			$in_commit_log = 0;
 			next;
 		}
 


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