linux-kernel - Re: [PATCH 2/3] checkpatch: colorize output to terminal

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Message-ID: <20150604120520.GO3135@pathway.suse.cz>
Date:	Thu, 4 Jun 2015 14:05:20 +0200
From:	Petr Mladek <pmladek@...e.cz>
To:	Joe Perches <joe@...ches.com>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	Andy Whitcroft <apw@...onical.com>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/3] checkpatch: colorize output to terminal

On Wed 2015-06-03 08:53:39, Joe Perches wrote:
> Add optional colors to make seeing message types a bit easier.
> 
> Add --color command line switch, default:on
> 
> Error is RED, warning is YELLOW, check is GREEN.
> The message type, if shown, is BLUE.
> 
> Signed-off-by: Joe Perches <joe@...ches.com>

Tested-by: Petr Mladek <pmladek@...e.cz>

I like it. It really helps noticing the problems.

Best Regards,
Petr

> ---
>  scripts/checkpatch.pl | 27 +++++++++++++++++++++------
>  1 file changed, 21 insertions(+), 6 deletions(-)
> 
> diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
> index eaa76bd..cef2cd4 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));
> @@ -49,6 +50,7 @@ my $min_conf_desc_length = 4;
>  my $spelling_file = "$D/spelling.txt";
>  my $codespell = 0;
>  my $codespellfile = "/usr/local/share/codespell/dictionary.txt";
> +my $color = 1;
>  
>  sub help {
>  	my ($exitcode) = @_;
> @@ -93,6 +95,7 @@ Options:
>    --codespell                Use the codespell dictionary for spelling/typos
>                               (default:/usr/local/share/codespell/dictionary.txt)
>    --codespellfile            Use this codespell dictionary
> +  --color                    Use colors when output is STDOUT (default: on)
>    -h, --help, --version      display this help and exit
>  
>  When FILE is - read standard input.
> @@ -153,6 +156,7 @@ GetOptions(
>  	'test-only=s'	=> \$tst_only,
>  	'codespell!'	=> \$codespell,
>  	'codespellfile=s'	=> \$codespellfile,
> +	'color!'	=> \$color,
>  	'h|help'	=> \$help,
>  	'version'	=> \$help
>  ) or help(1);
> @@ -1672,15 +1676,26 @@ sub report {
>  	    (defined $tst_only && $msg !~ /\Q$tst_only\E/)) {
>  		return 0;
>  	}
> -	my $line;
> +	my $output = '';
> +	if (-t STDOUT && $color) {
> +		if ($level eq 'ERROR') {
> +			$output .= RED;
> +		} elsif ($level eq 'WARNING') {
> +			$output .= YELLOW;
> +		} else {
> +			$output .= GREEN;
> +		}
> +	}
> +	$output .= $prefix . $level . ':';
>  	if ($show_types) {
> -		$line = "$prefix$level:$type: $msg\n";
> -	} else {
> -		$line = "$prefix$level: $msg\n";
> +		$output .= BLUE if (-t STDOUT && $color);
> +		$output .= "$type:";
>  	}
> -	$line = (split('\n', $line))[0] . "\n" if ($terse);
> +	$output .= RESET if (-t STDOUT && $color);
> +	$output .= ' ' . $msg . "\n";
> +	$output = (split('\n', $output))[0] . "\n" if ($terse);
>  
> -	push(our @report, $line);
> +	push(our @report, $output);
>  
>  	return 1;
>  }
> -- 
> 2.1.2
> 
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