[PATCH 07/13] utils/common: add str_token function

Ilan Peer ilan.peer at intel.com
Tue Oct 21 08:16:46 EDT 2014


From: Eliad Peller <eliad at wizery.com>

Add helper function to get next token from a string.

Signed-off-by: Eliad Peller <eliadx.peller at intel.com>
---
 src/utils/common.c | 32 ++++++++++++++++++++++++++++++++
 src/utils/common.h |  1 +
 2 files changed, 33 insertions(+)

diff --git a/src/utils/common.c b/src/utils/common.c
index 9902004..e19bd3e 100644
--- a/src/utils/common.c
+++ b/src/utils/common.c
@@ -866,3 +866,35 @@ int random_mac_addr_keep_oui(u8 *addr)
 	addr[0] |= 0x02; /* locally administered */
 	return 0;
 }
+
+
+/**
+ * str_token - get next token from string
+ * @buf: string to tokenize. Note that the string might be modified.
+ * @delim: string of delimiters
+ * @context: pointer to save our context. should be initialized with
+ *	NULL on the first call, and passed for any further call.
+ * Returns: The next token, NULL if there are no more valid tokens.
+ */
+char *str_token(char *str, const char *delim, char **context)
+{
+	char *end, *pos = str;
+
+	if (*context)
+		pos = *context;
+
+	while (*pos && os_strchr(delim, *pos))
+		pos++;
+	if (!*pos)
+		return NULL;
+
+	end = pos + 1;
+	while (*end && !os_strchr(delim, *end))
+		end++;
+
+	if (*end)
+		*end++ = '\0';
+
+	*context = end;
+	return pos;
+}
diff --git a/src/utils/common.h b/src/utils/common.h
index 14d9ad1..b245244 100644
--- a/src/utils/common.h
+++ b/src/utils/common.h
@@ -534,6 +534,7 @@ void int_array_add_unique(int **res, int a);
 
 #define ARRAY_SIZE(a) (sizeof(a) / sizeof((a)[0]))
 
+char *str_token(char *str, const char *delim, char **context);
 
 void str_clear_free(char *str);
 void bin_clear_free(void *bin, size_t len);
-- 
1.8.3.2



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