From: Fan Zhang <roy.fan.zh...@intel.com>
This patch adds parse_hex_string function to parse hex string to uint8_t
array.
Signed-off-by: Fan Zhang <roy.fan.zhang at intel.com>
---
examples/ip_pipeline/config_parse.c | 52 +++++++++++++++++++++++++++++++++++++
examples/ip_pipeline/pipeline_be.h | 4 +++
2 files changed, 56 insertions(+)
diff --git a/examples/ip_pipeline/config_parse.c
b/examples/ip_pipeline/config_parse.c
index c9b78f9..ab7c518 100644
--- a/examples/ip_pipeline/config_parse.c
+++ b/examples/ip_pipeline/config_parse.c
@@ -455,6 +455,58 @@ parse_pipeline_core(uint32_t *socket,
return 0;
}
+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;
+}
+
static size_t
skip_digits(const char *src)
{
diff --git a/examples/ip_pipeline/pipeline_be.h
b/examples/ip_pipeline/pipeline_be.h
index 51f1e4f..2e46440 100644
--- a/examples/ip_pipeline/pipeline_be.h
+++ b/examples/ip_pipeline/pipeline_be.h
@@ -253,4 +253,8 @@ struct pipeline_be_ops {
pipeline_be_op_track f_track;
};
+/* Parse hex string to uint8_t array */
+int
+parse_hex_string(char *src, uint8_t *dst, uint32_t *size);
+
#endif
--
2.1.0
