/* Returns 1 if string is valid UTF-8 string, 0 otherwise */
int is_utf8_string(const char* input);
+ /* Returns respectively a pointer to the next or the nth UTF-8 character.
+ The value n = 0 is the first character of the input, i.e.
+ next_utf8_char(input) is the same as nth_utf8_char(input, 1) */
+char* next_utf8_char(char* input);
+char* nth_utf8_char(char* input, int n);
+
/* Functions for creating and freeing conversion buffers yourself */
conv_buffer_t create_conv_buffer(int size);
void free_conv_buffer(conv_buffer_t buf);