From 9901983046c6a4e2793c060b3c10b4c7d467f813 Mon Sep 17 00:00:00 2001
From: Florian Forster <octo@collectd.org>
Date: Wed, 10 Sep 2014 16:15:40 +0200
Subject: [PATCH] src/common.[ch]: Implement strtogauge().

---
 src/common.c | 20 ++++++++++++++++++++
 src/common.h |  4 ++++
 2 files changed, 24 insertions(+)

diff --git a/src/common.c b/src/common.c
index 8691d3eb..5386739f 100644
--- a/src/common.c
+++ b/src/common.c
@@ -1543,6 +1543,26 @@ int strtoderive (const char *string, derive_t *ret_value) /* {{{ */
 	return (0);
 } /* }}} int strtoderive */
 
+int strtogauge (const char *string, gauge_t *ret_value) /* {{{ */
+{
+	gauge_t tmp;
+	char *endptr = NULL;
+
+	if ((string == NULL) || (ret_value == NULL))
+		return (EINVAL);
+
+	errno = 0;
+	endptr = NULL;
+	tmp = (gauge_t) strtod (string, &endptr);
+	if (errno != 0)
+		return (errno);
+	else if ((endptr == NULL) || (*endptr != 0))
+		return (EINVAL);
+
+	*ret_value = tmp;
+	return (0);
+} /* }}} int strtogauge */
+
 int strarray_add (char ***ret_array, size_t *ret_array_len, char const *str) /* {{{ */
 {
 	char **array;
diff --git a/src/common.h b/src/common.h
index b2e4c676..434ed019 100644
--- a/src/common.h
+++ b/src/common.h
@@ -347,6 +347,10 @@ int service_name_to_port_number (const char *service_name);
  * failure. If failure is returned, ret_value is not touched. */
 int strtoderive (const char *string, derive_t *ret_value);
 
+/** Parse a string to a gauge_t value. Returns zero on success or non-zero on
+ * failure. If failure is returned, ret_value is not touched. */
+int strtogauge (const char *string, gauge_t *ret_value);
+
 int strarray_add (char ***ret_array, size_t *ret_array_len, char const *str);
 void strarray_free (char **array, size_t array_len);
 
-- 
2.11.0