2015-10-13 14:57, Jasvinder Singh:
> From: Fan Zhang <roy.fan.zhang at intel.com>
> +static uint32_t
> +get_hex_val(char c)
> +{
> + switch (c) {
> + case '0':
> + case '1':
> + case '2':
> + case '3':
> + case '4':
> + case '5':
> + case '6':
> + case '7':
> + case '8':
> + case '9':
> + return c - '0';
> + case 'A':
> + case 'B':
> + case 'C':
> + case 'D':
> + case 'E':
> + case 'F':
> + return c - 'A' + 10;
> + case 'a':
> + case 'b':
> + case 'c':
> + case 'd':
> + case 'e':
> + case 'f':
> + return c - 'a' + 10;
> + default:
> + return 0;
> + }
> +}
> +
> +int
> +parse_hex_string(char *src, uint8_t *dst, uint32_t *size)
> +{
> + char *c;
> + uint32_t len, i;
> +
> + /* Check input parameters */
> + if ((src == NULL) ||
> + (dst == NULL) ||
> + (size == NULL) ||
> + (*size == 0))
> + return -1;
> +
> + len = strlen(src);
> + if (((len & 3) != 0) ||
> + (len > (*size) * 2))
> + return -1;
> + *size = len / 2;
> +
> + for (c = src; *c != 0; c++) {
> + if ((((*c) >= '0') && ((*c) <= '9')) ||
> + (((*c) >= 'A') && ((*c) <= 'F')) ||
> + (((*c) >= 'a') && ((*c) <= 'f')))
> + continue;
> +
> + return -1;
> + }
> +
> + /* Convert chars to bytes */
> + for (i = 0; i < *size; i++)
> + dst[i] = get_hex_val(src[2 * i]) * 16 +
> + get_hex_val(src[2 * i + 1]);
> +
> + return 0;
> +}
Why not use strtol()?
