utf8_printf() Files

utf8_sprintf() and utf8_vsprintf() throw assertions and abort at runtime.
This is due to concerns of security and buffer overruns.

int utf32_to_utf8(uint32_t encode_value, char *utf8_output);
int utf8_printf(const wchar_t *fmt, ...);
int utf8_fprintf(FILE *file_handle, const wchar_t *fmt, ...);
int utf8_snprintf(char *utf8_output, size_t max_length, const wchar_t *fmt, ...);
int utf8_sprintf(char *utf8_output, const wchar_t *fmt, ...); (See note above)
int utf8_vsnprintf(char *utf8_output, size_t max_length, const wchar_t *fmt, va_list arg_ptr);
int utf8_vsprintf(char *utf8_output, const wchar_t *fmt, va_list arg_ptr); (See note above)