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

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Message-ID: <20150602092643.GK3135@pathway.suse.cz>
Date:	Tue, 2 Jun 2015 11:26:43 +0200
From:	Petr Mladek <pmladek@...e.cz>
To:	Joe Perches <joe@...ches.com>
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 11:02:42, Joe Perches wrote:
> 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.

JFYI, the output with this patch looks fine to me but to be honest
I do not mind much about it.

I sent a patch that helped me a lot with parsing. If it is accepted
in some form, it would be great. I am sure that more improvements are
possible.

But all this is matter of personal taste. I am afraid that this theme
is prone for bikeshedding and I do not want to get involved if
possible :-)

Best Regards,
Petr

> 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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