1 files changed, 394 insertions, 0 deletions
diff --git a/awt/javax/imageio/stream/ImageInputStreamImpl.java b/awt/javax/imageio/stream/ImageInputStreamImpl.java
new file mode 100644
index 000000000000..83ac13a9c986
--- /dev/null
+++ b/awt/javax/imageio/stream/ImageInputStreamImpl.java
@@ -0,0 +1,394 @@
+/*
+ *  Licensed to the Apache Software Foundation (ASF) under one or more
+ *  contributor license agreements.  See the NOTICE file distributed with
+ *  this work for additional information regarding copyright ownership.
+ *  The ASF licenses this file to You under the Apache License, Version 2.0
+ *  (the "License"); you may not use this file except in compliance with
+ *  the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ */
+/**
+ * @author Rustem V. Rafikov
+ * @version $Revision: 1.3 $
+ */
+package javax.imageio.stream;
+
+import java.io.EOFException;
+import java.io.IOException;
+import java.nio.ByteOrder;
+
+/**
+ * The ImageInputStreamImpl abstract class implements
+ * the ImageInputStream interface.
+ */
+public abstract class ImageInputStreamImpl implements ImageInputStream {
+
+    /** The byte order. */
+    protected ByteOrder byteOrder = ByteOrder.BIG_ENDIAN;
+
+    /** The stream position. */
+    protected long streamPos = 0;
+    
+    /** The flushed position. */
+    protected long flushedPos = 0;
+    
+    /** The bit offset. */
+    protected int bitOffset = 0;
+
+    /** The closed. */
+    private boolean closed = false;
+
+    /** The position stack. */
+    private final PositionStack posStack = new PositionStack();
+
+    /**
+     * Instantiates a new ImageInputStreamImpl.
+     */
+    public ImageInputStreamImpl() {}
+
+    /**
+     * Check if the stream is closed and if true, throws an IOException.
+     * 
+     * @throws IOException Signals that the stream is closed.
+     */
+    protected final void checkClosed() throws IOException {
+        if (closed) {
+            throw new IOException("stream is closed");
+        }
+    }
+
+    public void setByteOrder(ByteOrder byteOrder) {
+        this.byteOrder = byteOrder;
+    }
+
+    public ByteOrder getByteOrder() {
+        return byteOrder;
+    }
+
+    public abstract int read() throws IOException;
+
+    public int read(byte[] b) throws IOException {
+        return read(b, 0, b.length);
+    }
+
+    public abstract int read(byte[] b, int off, int len) throws IOException;
+
+    public void readBytes(IIOByteBuffer buf, int len) throws IOException {
+        if (buf == null) {
+            throw new NullPointerException("buffer is NULL");
+        }
+
+        byte[] b = new byte[len];
+        len = read(b, 0, b.length);
+
+        buf.setData(b);
+        buf.setOffset(0);
+        buf.setLength(len);
+    }
+
+    public boolean readBoolean() throws IOException {
+        int b = read();
+        if (b < 0) {
+            throw new EOFException("EOF reached");
+        }
+        return b != 0;
+    }
+
+    public byte readByte() throws IOException {
+        int b = read();
+        if (b < 0) {
+            throw new EOFException("EOF reached");
+        }
+        return (byte) b;
+    }
+
+    public int readUnsignedByte() throws IOException {
+        int b = read();
+        if (b < 0) {
+            throw new EOFException("EOF reached");
+        }
+        return b;
+    }
+
+    public short readShort() throws IOException {
+        int b1 = read();
+        int b2 = read();
+
+        if (b1 < 0 || b2 < 0) {
+            throw new EOFException("EOF reached");
+        }
+
+        return byteOrder == ByteOrder.BIG_ENDIAN ?
+                (short) ((b1 << 8) | (b2 & 0xff)) :
+                (short) ((b2 << 8) | (b1 & 0xff));
+    }
+
+    public int readUnsignedShort() throws IOException {
+        //-- TODO implement
+        throw new UnsupportedOperationException("Not implemented yet");
+    }
+
+    public char readChar() throws IOException {
+        //-- TODO implement
+        throw new UnsupportedOperationException("Not implemented yet");
+    }
+
+    public int readInt() throws IOException {
+        //-- TODO implement
+        throw new UnsupportedOperationException("Not implemented yet");
+    }
+
+    public long readUnsignedInt() throws IOException {
+        //-- TODO implement
+        throw new UnsupportedOperationException("Not implemented yet");
+    }
+
+    public long readLong() throws IOException {
+        //-- TODO implement
+        throw new UnsupportedOperationException("Not implemented yet");
+    }
+
+    public float readFloat() throws IOException {
+        //-- TODO implement
+        throw new UnsupportedOperationException("Not implemented yet");
+    }
+
+    public double readDouble() throws IOException {
+        //-- TODO implement
+        throw new UnsupportedOperationException("Not implemented yet");
+    }
+
+    public String readLine() throws IOException {
+        //-- TODO implement
+        throw new UnsupportedOperationException("Not implemented yet");
+    }
+
+    public String readUTF() throws IOException {
+        //-- TODO implement
+        throw new UnsupportedOperationException("Not implemented yet");
+    }
+
+    public void readFully(byte[] b, int off, int len) throws IOException {
+        //-- TODO implement
+        throw new UnsupportedOperationException("Not implemented yet");
+    }
+
+    public void readFully(byte[] b) throws IOException {
+        readFully(b, 0, b.length);
+    }
+
+    public void readFully(short[] s, int off, int len) throws IOException {
+        //-- TODO implement
+        throw new UnsupportedOperationException("Not implemented yet");
+    }
+
+    public void readFully(char[] c, int off, int len) throws IOException {
+        //-- TODO implement
+        throw new UnsupportedOperationException("Not implemented yet");
+    }
+
+    public void readFully(int[] i, int off, int len) throws IOException {
+        //-- TODO implement
+        throw new UnsupportedOperationException("Not implemented yet");
+    }
+
+    public void readFully(long[] l, int off, int len) throws IOException {
+        //-- TODO implement
+        throw new UnsupportedOperationException("Not implemented yet");
+    }
+
+    public void readFully(float[] f, int off, int len) throws IOException {
+        //-- TODO implement
+        throw new UnsupportedOperationException("Not implemented yet");
+    }
+
+    public void readFully(double[] d, int off, int len) throws IOException {
+        //-- TODO implement
+        throw new UnsupportedOperationException("Not implemented yet");
+    }
+
+    public long getStreamPosition() throws IOException {
+        checkClosed();
+        return streamPos;
+    }
+
+    public int getBitOffset() throws IOException {
+        checkClosed();
+        return bitOffset;
+    }
+
+    public void setBitOffset(int bitOffset) throws IOException {
+        checkClosed();
+        this.bitOffset = bitOffset;
+    }
+
+    public int readBit() throws IOException {
+        //-- TODO implement
+        throw new UnsupportedOperationException("Not implemented yet");
+    }
+
+    public long readBits(int numBits) throws IOException {
+        //-- TODO implement
+        throw new UnsupportedOperationException("Not implemented yet");
+    }
+
+    public long length() {
+        return -1L;
+    }
+
+    public int skipBytes(int n) throws IOException {
+        //-- TODO implement
+        throw new UnsupportedOperationException("Not implemented yet");
+    }
+
+    public long skipBytes(long n) throws IOException {
+        //-- TODO implement
+        throw new UnsupportedOperationException("Not implemented yet");
+    }
+
+    public void seek(long pos) throws IOException {
+        checkClosed();
+        if (pos < getFlushedPosition()) {
+            throw new IllegalArgumentException("trying to seek before flushed pos");
+        }
+        bitOffset = 0;
+        streamPos = pos;
+    }
+
+    public void mark() {
+        try {
+            posStack.push(getStreamPosition());
+        } catch (IOException e) {
+            e.printStackTrace();
+            throw new RuntimeException("Stream marking error");
+        }
+    }
+
+    public void reset() throws IOException {
+        //-- TODO bit pos
+        if (!posStack.isEmpty()) {
+            long p = posStack.pop();
+            if (p < flushedPos) {
+                throw new IOException("marked position lies in the flushed portion of the stream");
+            }
+            seek(p);
+        }
+    }
+
+    public void flushBefore(long pos) throws IOException {
+        if (pos > getStreamPosition()) {
+            throw new IndexOutOfBoundsException("Trying to flush outside of current position");
+        }
+        if (pos < flushedPos) {
+            throw new IndexOutOfBoundsException("Trying to flush within already flushed portion");
+        }
+        flushedPos = pos;
+        //-- TODO implement
+    }
+
+    public void flush() throws IOException {
+        flushBefore(getStreamPosition());
+    }
+
+    public long getFlushedPosition() {
+        return flushedPos;
+    }
+
+    public boolean isCached() {
+        return false; //def
+    }
+
+    public boolean isCachedMemory() {
+        return false; //def
+    }
+
+    public boolean isCachedFile() {
+        return false; //def
+    }
+
+    public void close() throws IOException {
+        checkClosed();
+        closed = true;
+
+    }
+
+    /**
+     * Finalizes this object.
+     * 
+     * @throws Throwable if an error occurs.
+     */
+    @Override
+    protected void finalize() throws Throwable {
+        if (!closed) {
+            try {
+                close();
+            } finally {
+                super.finalize();
+            }
+        }
+    }
+
+    /**
+     * The Class PositionStack.
+     */
+    private static class PositionStack {
+        
+        /** The Constant SIZE. */
+        private static final int SIZE = 10;
+
+        /** The values. */
+        private long[] values = new long[SIZE];
+        
+        /** The pos. */
+        private int pos = 0;
+
+
+        /**
+         * Push.
+         * 
+         * @param v the v
+         */
+        void push(long v) {
+            if (pos >= values.length) {
+                ensure(pos+1);
+            }
+            values[pos++] = v;
+        }
+
+        /**
+         * Pop.
+         * 
+         * @return the long
+         */
+        long pop() {
+            return values[--pos];
+        }
+
+        /**
+         * Checks if is empty.
+         * 
+         * @return true, if is empty
+         */
+        boolean isEmpty() {
+            return pos == 0;
+        }
+
+        /**
+         * Ensure.
+         * 
+         * @param size the size
+         */
+        private void ensure(int size) {
+            long[] arr = new long[Math.max(2 * values.length, size)];
+            System.arraycopy(values, 0, arr, 0, values.length);
+            values = arr;
+        }
+    }
+}