[U-Boot] [PATCH 2/3] cmd: part: Extract common code to separate function

[Lukasz Majewski <lukma@denx.de>]

On Mon, 26 Feb 2018 23:18:00 +0200
Sam Protsenko <semen.protsenko@linaro.org> wrote:

> Refactor the code for "part start" and "part size" commands to avoid
> code duplication.
> 
> Signed-off-by: Sam Protsenko <semen.protsenko@linaro.org>
> ---
>  cmd/part.c | 61
> +++++++++++++++++++++++-------------------------------------- 1 file
> changed, 23 insertions(+), 38 deletions(-)
> 
> diff --git a/cmd/part.c b/cmd/part.c
> index fd8825a7ec..ec791fdc5d 100644
> --- a/cmd/part.c
> +++ b/cmd/part.c
> @@ -22,6 +22,11 @@
>  #include <part.h>
>  #include <vsprintf.h>
>  
> +enum cmd_part_info {
> +	CMD_PART_INFO_START = 0,
> +	CMD_PART_INFO_SIZE,
> +};
> +
>  static int do_part_uuid(int argc, char * const argv[])
>  {
>  	int part;
> @@ -108,7 +113,7 @@ static int do_part_list(int argc, char * const
> argv[]) return 0;
>  }
>  
> -static int do_part_start(int argc, char * const argv[])
> +static int do_part_info(int argc, char * const argv[], enum
> cmd_part_info param) {
>  	struct blk_desc *desc;
>  	disk_partition_t info;
> @@ -138,7 +143,17 @@ static int do_part_start(int argc, char * const
> argv[]) return 1;
>  	}
>  
> -	snprintf(buf, sizeof(buf), LBAF, info.start);
> +	switch (param) {
> +	case CMD_PART_INFO_START:
> +		snprintf(buf, sizeof(buf), LBAF, info.start);
> +		break;
> +	case CMD_PART_INFO_SIZE:
> +		snprintf(buf, sizeof(buf), LBAF, info.size);
> +		break;
> +	default:
> +		printf("** Unknown cmd_part_info value: %d\n",
> param);
> +		return 1;
> +	}
>  
>  	if (argc > 3)
>  		env_set(argv[3], buf);
> @@ -148,44 +163,14 @@ static int do_part_start(int argc, char * const
> argv[]) return 0;
>  }
>  
> -static int do_part_size(int argc, char * const argv[])
> +static int do_part_start(int argc, char * const argv[])
>  {
> -	struct blk_desc *desc;
> -	disk_partition_t info;
> -	char buf[512] = { 0 };
> -	char *endp;
> -	int part;
> -	int err;
> -	int ret;
> -
> -	if (argc < 3)
> -		return CMD_RET_USAGE;
> -	if (argc > 4)
> -		return CMD_RET_USAGE;
> -
> -	ret = blk_get_device_by_str(argv[0], argv[1], &desc);
> -	if (ret < 0)
> -		return 1;
> -
> -	part = simple_strtoul(argv[2], &endp, 0);
> -	if (*endp == '\0') {
> -		err = part_get_info(desc, part, &info);
> -		if (err)
> -			return 1;
> -	} else {
> -		part = part_get_info_by_name(desc, argv[2], &info);
> -		if (part == -1)
> -			return 1;
> -	}
> -
> -	snprintf(buf, sizeof(buf), LBAF, info.size);
> -
> -	if (argc > 3)
> -		env_set(argv[3], buf);
> -	else
> -		printf("%s\n", buf);
> +	return do_part_info(argc, argv, CMD_PART_INFO_START);
> +}
>  
> -	return 0;
> +static int do_part_size(int argc, char * const argv[])
> +{
> +	return do_part_info(argc, argv, CMD_PART_INFO_SIZE);
>  }
>  
>  static int do_part(cmd_tbl_t *cmdtp, int flag, int argc, char *
> const argv[])

Reviewed-by: Lukasz Majewski <lukma@denx.de>


Best regards,

Lukasz Majewski

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