private int readBytes()

in src/com/amazon/ion/impl/IonReaderTextSystemX.java [853:920]
64 lines of code
22 McCabe index (conditional complexity)

    private int readBytes(byte[] buffer, int offset, int len)
        throws IOException
    {
        int starting_offset = offset;
        int c = -1;

        switch (_lob_token) {
        // BLOB
        case IonTokenConstsX.TOKEN_OPEN_DOUBLE_BRACE:
            while (len-- > 0) {
                c = _scanner.read_base64_byte();
                if (c < 0) break;
                buffer[offset++] = (byte)c;
            }
            break;
        // CLOB
        case IonTokenConstsX.TOKEN_STRING_DOUBLE_QUOTE:
            while (len-- > 0) {
                c = _scanner.read_double_quoted_char(true);
                if (c < 0) {
                    if (c == CharacterSequence.CHAR_SEQ_ESCAPED_NEWLINE_SEQUENCE_1
                     || c == CharacterSequence.CHAR_SEQ_ESCAPED_NEWLINE_SEQUENCE_2
                     || c == CharacterSequence.CHAR_SEQ_ESCAPED_NEWLINE_SEQUENCE_3
                    ) {
                        continue;
                    }
                    break;
                }
                assert(c <= UNSIGNED_BYTE_MAX_VALUE);
                buffer[offset++] = (byte)c;
            }
            break;
        // CLOB
        case IonTokenConstsX.TOKEN_STRING_TRIPLE_QUOTE:
            while (len-- > 0) {
                c = _scanner.read_triple_quoted_char(true);
                if (c < 0) {
                    if (c == CharacterSequence.CHAR_SEQ_ESCAPED_NEWLINE_SEQUENCE_1
                     || c == CharacterSequence.CHAR_SEQ_ESCAPED_NEWLINE_SEQUENCE_2
                     || c == CharacterSequence.CHAR_SEQ_ESCAPED_NEWLINE_SEQUENCE_3
                     || c == CharacterSequence.CHAR_SEQ_STRING_NON_TERMINATOR
                    ) {
                        continue;
                    }
                    if (c == CharacterSequence.CHAR_SEQ_NEWLINE_SEQUENCE_1
                     || c == CharacterSequence.CHAR_SEQ_NEWLINE_SEQUENCE_2
                     || c == CharacterSequence.CHAR_SEQ_NEWLINE_SEQUENCE_3
                    ) {
                        buffer[offset++] = (byte)'\n';
                        continue;
                    }
                    break;
                }
                assert(c >= 0 && c <= UNSIGNED_BYTE_MAX_VALUE);
                buffer[offset++] = (byte)c;
            }
            break;
        default:
            String message = "invalid type ["+_value_type.toString()+"] for lob handling";
            throw new IonReaderTextTokenException(message);
        }
        if (c == -1) {
            _scanner.tokenIsFinished();
        }
        int read = offset - starting_offset;
        _lob_value_position += read;   // TODO: is _lob_value_position really needed?
        return read;
    }