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 | 70 +++++++++++++++++++++++++++++++++++++
examples/ip_pipeline/pipeline.h | 4 +++
2 files changed, 74 insertions(+)
diff --git a/examples/ip_pipeline/config_parse.c
b/examples/ip_pipeline/config_parse.c
index c9b78f9..d7ee707 100644
--- a/examples/ip_pipeline/config_parse.c
+++ b/examples/ip_pipeline/config_parse.c
@@ -455,6 +455,76 @@ 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.h b/examples/ip_pipeline/pipeline.h
index b9a56ea..4063594 100644
--- a/examples/ip_pipeline/pipeline.h
+++ b/examples/ip_pipeline/pipeline.h
@@ -84,4 +84,8 @@ pipeline_type_cmds_count(struct pipeline_type *ptype)
return n_cmds;
}
+/* Parse hex string to uint8_t array */
+int
+parse_hex_string(char *src, uint8_t *dst, uint32_t *size);
+
#endif
--
2.1.0
