protected String readLongUTF()

in core/src/main/java/flex/messaging/io/amf/Amf0Input.java [421:481]
53 lines of code
18 McCabe index (conditional complexity)

    protected String readLongUTF() throws IOException {
        int utflen = in.readInt();
        checkUTFLength(utflen);

        int c, char2, char3;
        char[] charr = getTempCharArray(utflen);
        byte bytearr[] = getTempByteArray(utflen);
        int count = 0;
        int chCount = 0;

        in.readFully(bytearr, 0, utflen);

        while (count < utflen) {
            c = (int) bytearr[count] & 0xff;
            switch (c >> 4) {
                case 0:
                case 1:
                case 2:
                case 3:
                case 4:
                case 5:
                case 6:
                case 7:
                    /* 0xxxxxxx*/
                    count++;
                    charr[chCount] = (char) c;
                    break;
                case 12:
                case 13:
                    /* 110x xxxx   10xx xxxx*/
                    count += 2;
                    if (count > utflen)
                        throw new UTFDataFormatException();
                    char2 = (int) bytearr[count - 1];
                    if ((char2 & 0xC0) != 0x80)
                        throw new UTFDataFormatException();
                    charr[chCount] = (char) (((c & 0x1F) << 6) | (char2 & 0x3F));
                    break;
                case 14:
                    /* 1110 xxxx  10xx xxxx  10xx xxxx */
                    count += 3;
                    if (count > utflen)
                        throw new UTFDataFormatException();
                    char2 = (int) bytearr[count - 2];
                    char3 = (int) bytearr[count - 1];
                    if (((char2 & 0xC0) != 0x80) || ((char3 & 0xC0) != 0x80))
                        throw new UTFDataFormatException();
                    charr[chCount] = (char)
                            (((c & 0x0F) << 12) |
                                    ((char2 & 0x3F) << 6) |
                                    ((char3 & 0x3F) << 0));
                    break;
                default:
                    /* 10xx xxxx,  1111 xxxx */
                    throw new UTFDataFormatException();
            }
            chCount++;
        }
        // The number of chars produced may be less than utflen
        return new String(charr, 0, chCount);
    }