CYC_UTF8_ACCEPT Cyc_utf8_count_code_points Cyc_utf8_count_code_points_and_bytes Cyc_utf8_decode Cyc_utf8_encode Cyc_utf8_encode_char CYC_UTF8_REJECT Cyc_utf8_validate Cyc_utf8_validate_stream

uint32_t Cyc_utf8_validate_stream ( uint32_t *  state, char *  str, size_t  len  ) Use this when validating from a stream, as it may be that the stream stopped in the middle of a codepoint, hence state passed in as an arg, so it can be tested in a loop and also after the loop has finished. From https://stackoverflow.com/a/22135005/101258