[lttng-dev] [Babeltrace PATCH 14/23] Add MinGW implementation of strnlen

[Ikaheimonen, JP]

Add an implementation of strnlen for MinGW, as it does not provide
that function in its runtime library.
---
 include/babeltrace/compat/string.h | 24 ++++++++++++++++++++++++
 1 file changed, 24 insertions(+)

diff --git a/include/babeltrace/compat/string.h b/include/babeltrace/compat/string.h
index 1db5837..14e7b53 100644
--- a/include/babeltrace/compat/string.h
+++ b/include/babeltrace/compat/string.h
@@ -44,6 +44,30 @@ static inline char* strtok_r(
 	return ret;
 }
 
+static inline
+size_t strnlen(const char *str, size_t maxlen)
+{
+	char * ptr;
+	size_t len;
+
+	ptr = (char *)str;
+	len = 0;
+
+	/* while there still are characters in the string */
+	while(*ptr != '\0') {
+		/* increment counter */
+		len++;
+		/* check that we do not exceed the given maximum */
+		if (len == maxlen) {
+			return len;
+		}
+		/* next character */
+		ptr++;
+
+	}
+	return len;
+}
+
 static inline int compat_strerror_r(int errnum, char *buf, size_t buflen)
 {
 	/* non-recursive implementation of strerror_r */
-- 
1.8.1.msysgit.1