Re: [PATCH 3/4] config.c: introduce 'git_config_color' to parse ANSI colors

From: Jeff King <peff@peff.net>
Date: Mar 6, 2018, 06:53 UTC
Message-ID: <20180306065349.GD3522@sigill.intra.peff.net>
In-Reply-To: <20180306021729.45813-4-me@ttaylorr.com>

On Mon, Mar 05, 2018 at 06:17:28PM -0800, Taylor Blau wrote:

> In preparation for adding `--color` to the `git-config(1)` builtin,
> let's introduce a color parsing utility, `git_config_color` in a similar
> fashion to `git_config_<type>`.

Sounds good...

Show 12 quoted lines

> @@ -1000,6 +1001,15 @@ int git_config_expiry_date(timestamp_t *timestamp, const char *var, const char *
>  	return 0;
>  }
>  
> +int git_config_color(char **dest, const char *var, const char *value)
> +{
> +	if (!value)
> +		return config_error_nonbool(var);
> +	if (color_parse(value, *dest) < 0)
> +		return -1;
> +	return 0;
> +}

Why do we take a pointer-to-pointer here? We don't allocate like git_config_string() does, but instead fill in the existing buffer.

-Peff