private void initialize()

in src/main/java/org/apache/xmlgraphics/image/codec/tiff/TIFFDirectory.java [212:361]
116 lines of code
28 McCabe index (conditional complexity)

    private void initialize(SeekableStream stream) throws IOException {
        long nextTagOffset;
        int i;
        int j;

        ifdOffset = stream.getFilePointer();

        numEntries = readUnsignedShort(stream);
        fields = new TIFFField[numEntries];

        for (i = 0; i < numEntries; i++) {
            int tag = readUnsignedShort(stream);
            int type = readUnsignedShort(stream);
            int count = (int)(readUnsignedInt(stream));
            int value = 0;

            // The place to return to to read the next tag
            nextTagOffset = stream.getFilePointer() + 4;

            try {
                // If the tag data can't fit in 4 bytes, the next 4 bytes
                // contain the starting offset of the data
                if (count * SIZE_OF_TYPE[type] > 4) {
                    value = (int)(readUnsignedInt(stream));
                    stream.seek(value);
                }
            } catch (ArrayIndexOutOfBoundsException ae) {
                // System.err.println(tag + " " + "TIFFDirectory4"); TODO - log this message
                // if the data type is unknown we should skip this TIFF Field
                stream.seek(nextTagOffset);
                continue;
            }

            fieldIndex.put(tag, i);
            Object obj = null;

            switch (type) {
            case TIFFField.TIFF_BYTE:
            case TIFFField.TIFF_SBYTE:
            case TIFFField.TIFF_UNDEFINED:
            case TIFFField.TIFF_ASCII:
                byte[] bvalues = new byte[count];
                stream.readFully(bvalues, 0, count);

                if (type == TIFFField.TIFF_ASCII) {

                    // Can be multiple strings
                    int index = 0;
                    int prevIndex = 0;
                    List v = new ArrayList();

                    while (index < count) {

                        while ((index < count) && (bvalues[index++] != 0)) {
                            // NOP
                        }

                        // When we encountered zero, means one string has ended
                        v.add(new String(bvalues, prevIndex,
                                         (index - prevIndex), StandardCharsets.UTF_8));
                        prevIndex = index;
                    }

                    count = v.size();
                    String[] strings = new String[count];
                    v.toArray(strings);
                    obj = strings;
                } else {
                    obj = bvalues;
                }

                break;

            case TIFFField.TIFF_SHORT:
                char[] cvalues = new char[count];
                for (j = 0; j < count; j++) {
                    cvalues[j] = (char)(readUnsignedShort(stream));
                }
                obj = cvalues;
                break;

            case TIFFField.TIFF_LONG:
                long[] lvalues = new long[count];
                for (j = 0; j < count; j++) {
                    lvalues[j] = readUnsignedInt(stream);
                }
                obj = lvalues;
                break;

            case TIFFField.TIFF_RATIONAL:
                long[][] llvalues = new long[count][2];
                for (j = 0; j < count; j++) {
                    llvalues[j][0] = readUnsignedInt(stream);
                    llvalues[j][1] = readUnsignedInt(stream);
                }
                obj = llvalues;
                break;

            case TIFFField.TIFF_SSHORT:
                short[] svalues = new short[count];
                for (j = 0; j < count; j++) {
                    svalues[j] = readShort(stream);
                }
                obj = svalues;
                break;

            case TIFFField.TIFF_SLONG:
                int[] ivalues = new int[count];
                for (j = 0; j < count; j++) {
                    ivalues[j] = readInt(stream);
                }
                obj = ivalues;
                break;

            case TIFFField.TIFF_SRATIONAL:
                int[][] iivalues = new int[count][2];
                for (j = 0; j < count; j++) {
                    iivalues[j][0] = readInt(stream);
                    iivalues[j][1] = readInt(stream);
                }
                obj = iivalues;
                break;

            case TIFFField.TIFF_FLOAT:
                float[] fvalues = new float[count];
                for (j = 0; j < count; j++) {
                    fvalues[j] = readFloat(stream);
                }
                obj = fvalues;
                break;

            case TIFFField.TIFF_DOUBLE:
                double[] dvalues = new double[count];
                for (j = 0; j < count; j++) {
                    dvalues[j] = readDouble(stream);
                }
                obj = dvalues;
                break;

            default:
                throw new RuntimeException(PropertyUtil.getString("TIFFDirectory0"));
            }

            fields[i] = new TIFFField(tag, type, count, obj);
            stream.seek(nextTagOffset);
        }

        // Read the offset of the next IFD.
        nextIFDOffset = readUnsignedInt(stream);
    }