linux-kernel - Re: [PATCH] checkpatch: Make the output better readable

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Date:	Mon, 01 Jun 2015 11:02:42 -0700
From:	Joe Perches <joe@...ches.com>
To:	Petr Mladek <pmladek@...e.cz>
Cc:	Andy Whitcroft <apw@...onical.com>, linux-kernel@...r.kernel.org,
	Andrew Morton <akpm@...ux-foundation.org>
Subject: Re: [PATCH] checkpatch: Make the output better readable

On Mon, 2015-06-01 at 16:25 +0200, Petr Mladek wrote:
> I always have troubles to parse checkpatch.pl output when I check
> the whole patchset. It is hard to say which messages belongs to
> what patch.
> 
> This patch does few small changes to make the output look better
> for me:

As git and other utilities now use color by default, what do
you think about adding color for various message types?

And colorize only to the terminal, not any redirected output.

Maybe something like:

diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index c8032a0..12c43c6 100755
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -9,6 +9,7 @@ use strict;
 use POSIX;
 use File::Basename;
 use Cwd 'abs_path';
+use Term::ANSIColor qw(:constants);
 
 my $P = $0;
 my $D = dirname(abs_path($P));
@@ -1649,10 +1650,24 @@ sub report {
 		return 0;
 	}
 	my $line;
+	my $cprefix = $prefix;
+	my $clevel = $level;
+	my $ctype = $type;
+	if (-t STDOUT) {
+		$cprefix = GREEN . $prefix . RESET;
+		if ($level eq "ERROR") {
+			$clevel = RED . $level . RESET;
+		} elsif ($level eq "WARNING") {
+			$clevel = YELLOW . $level . RESET;
+		} else {
+			$clevel = GREEN . $level . RESET;
+		}
+		$ctype = GREEN . $type . RESET;
+	}
 	if ($show_types) {
-		$line = "$prefix$level:$type: $msg\n";
+		$line = "$cprefix$clevel:$ctype: $msg\n";
 	} else {
-		$line = "$prefix$level: $msg\n";
+		$line = "$cprefix$clevel: $msg\n";
 	}
 	$line = (split('\n', $line))[0] . "\n" if ($terse);
 


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