FcUtf8Len - count UTF-8 encoded chars
#include <fontconfig.h> FcBool FcUtf8Len(FcChar8 *src); (int len); (int *nchar); (int *wchar); .fi
Counts the number of Unicode chars in len bytes of src. Places that count in nchar. wchar contains 1, 2 or 4 depending on the number of bytes needed to hold the largest unicode char counted. The return value indicates whether src is a well-formed UTF8 string.
Fontconfig version 2.8.0 18 November 2009 FcUtf8Len(3)