- Moved unused encoders/decoders to sandbox

- Fixed Base64 encoder/decoder to pass test cases
- Minor clean-up in other decoders
This commit is contained in:
Harald Kuhr
2009-09-18 22:46:31 +02:00
parent 40a5960a9f
commit c45882846a
20 changed files with 259 additions and 139 deletions

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/*
* Copyright (c) 2008, Harald Kuhr
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* * Neither the name "TwelveMonkeys" nor the
* names of its contributors may be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
package com.twelvemonkeys.io.enc;
import java.io.OutputStream;
import java.io.IOException;
import java.util.zip.Deflater;
/**
* {@code Encoder} implementation for standard DEFLATE encoding.
* <p/>
*
* @author <a href="mailto:harald.kuhr@gmail.com">Harald Kuhr</a>
* @version $Id: //depot/branches/personal/haraldk/twelvemonkeys/release-2/twelvemonkeys-core/src/main/java/com/twelvemonkeys/io/enc/DeflateEncoder.java#2 $
*
* @see <a href="http://tools.ietf.org/html/rfc1951">RFC 1951</a>
* @see Deflater
* @see InflateDecoder
* @see java.util.zip.DeflaterOutputStream
*/
final class DeflateEncoder implements Encoder {
private final Deflater mDeflater;
private final byte[] mBuffer = new byte[1024];
public DeflateEncoder() {
// this(new Deflater());
this(new Deflater(Deflater.DEFAULT_COMPRESSION, true)); // TODO: Should we use "no wrap"?
}
public DeflateEncoder(final Deflater pDeflater) {
if (pDeflater == null) {
throw new IllegalArgumentException("deflater == null");
}
mDeflater = pDeflater;
}
public void encode(final OutputStream pStream, final byte[] pBuffer, final int pOffset, final int pLength)
throws IOException
{
System.out.println("DeflateEncoder.encode");
mDeflater.setInput(pBuffer, pOffset, pLength);
flushInputToStream(pStream);
}
private void flushInputToStream(final OutputStream pStream) throws IOException {
System.out.println("DeflateEncoder.flushInputToStream");
if (mDeflater.needsInput()) {
System.out.println("Foo");
}
while (!mDeflater.needsInput()) {
int deflated = mDeflater.deflate(mBuffer, 0, mBuffer.length);
pStream.write(mBuffer, 0, deflated);
System.out.println("flushed " + deflated);
}
}
// public void flush() {
// mDeflater.finish();
// }
}

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/*
* Copyright (c) 2008, Harald Kuhr
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* * Neither the name "TwelveMonkeys" nor the
* names of its contributors may be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
package com.twelvemonkeys.io.enc;
import java.io.EOFException;
import java.io.IOException;
import java.io.InputStream;
import java.util.zip.DataFormatException;
import java.util.zip.Inflater;
/**
* {@code Decoder} implementation for standard DEFLATE encoding.
* <p/>
*
* @see <a href="http://tools.ietf.org/html/rfc1951">RFC 1951</a>
*
* @see Inflater
* @see DeflateEncoder
* @see java.util.zip.InflaterInputStream
*
* @author <a href="mailto:harald.kuhr@gmail.com">Harald Kuhr</a>
* @version $Id: //depot/branches/personal/haraldk/twelvemonkeys/release-2/twelvemonkeys-core/src/main/java/com/twelvemonkeys/io/enc/InflateDecoder.java#2 $
*/
final class InflateDecoder implements Decoder {
private final Inflater mInflater;
private final byte[] mBuffer;
/**
* Creates an {@code InflateDecoder}
*
*/
public InflateDecoder() {
this(new Inflater(true));
}
/**
* Creates an {@code InflateDecoder}
*
* @param pInflater the inflater instance to use
*/
public InflateDecoder(final Inflater pInflater) {
if (pInflater == null) {
throw new IllegalArgumentException("inflater == null");
}
mInflater = pInflater;
mBuffer = new byte[1024];
}
public int decode(final InputStream pStream, final byte[] pBuffer) throws IOException {
try {
int decoded;
while ((decoded = mInflater.inflate(pBuffer, 0, pBuffer.length)) == 0) {
if (mInflater.finished() || mInflater.needsDictionary()) {
return 0;
}
if (mInflater.needsInput()) {
fill(pStream);
}
}
return decoded;
}
catch (DataFormatException e) {
String message = e.getMessage();
throw new DecodeException(message != null ? message : "Invalid ZLIB data format", e);
}
}
private void fill(final InputStream pStream) throws IOException {
int available = pStream.read(mBuffer, 0, mBuffer.length);
if (available == -1) {
throw new EOFException("Unexpected end of ZLIB stream");
}
mInflater.setInput(mBuffer, 0, available);
}
}

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/*
* Copyright (c) 2008, Harald Kuhr
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* * Neither the name "TwelveMonkeys" nor the
* names of its contributors may be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
package com.twelvemonkeys.io.enc;
import java.io.InputStream;
import java.io.IOException;
/**
* LZWDecoder.
* <p/>
*
* @author <a href="mailto:harald.kuhr@gmail.com">Harald Kuhr</a>
* @version $Id: //depot/branches/personal/haraldk/twelvemonkeys/release-2/twelvemonkeys-core/src/main/java/com/twelvemonkeys/io/enc/LZWDecoder.java#2 $
*/
final class LZWDecoder implements Decoder {
public int decode(InputStream pStream, byte[] pBuffer) throws IOException {
return 0; // TODO: Implement
// TODO: We probably need a GIF specific subclass
}
}

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/*
* Copyright (c) 2008, Harald Kuhr
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* * Neither the name "TwelveMonkeys" nor the
* names of its contributors may be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
package com.twelvemonkeys.io.enc;
import java.io.OutputStream;
import java.io.IOException;
/**
* LZWEncoder.
* <p/>
*
* @author <a href="mailto:harald.kuhr@gmail.com">Harald Kuhr</a>
* @version $Id: //depot/branches/personal/haraldk/twelvemonkeys/release-2/twelvemonkeys-core/src/main/java/com/twelvemonkeys/io/enc/LZWEncoder.java#2 $
*/
final class LZWEncoder implements Encoder {
public void encode(OutputStream pStream, byte[] pBuffer, int pOffset, int pLength) throws IOException {
// TODO: Implement
// TODO: We probably need a GIF specific subclass
}
}

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package com.twelvemonkeys.io.enc;
/**
* DeflateEncoderTest
* <p/>
*
* @author <a href="mailto:harald.kuhr@gmail.com">Harald Kuhr</a>
* @version $Id: //depot/branches/personal/haraldk/twelvemonkeys/release-2/twelvemonkeys-core/src/test/java/com/twelvemonkeys/io/enc/DeflateDecoderTestCase.java#1 $
*/
public class DeflateEncoderTestCase extends EncoderAbstractTestCase {
protected Encoder createEncoder() {
return new DeflateEncoder();
}
protected Decoder createCompatibleDecoder() {
return new InflateDecoder();
}
}

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package com.twelvemonkeys.io.enc;
/**
* InflateEncoderTest
* <p/>
*
* @author <a href="mailto:harald.kuhr@gmail.com">Harald Kuhr</a>
* @version $Id: //depot/branches/personal/haraldk/twelvemonkeys/release-2/twelvemonkeys-core/src/test/java/com/twelvemonkeys/io/enc/InflateDecoderTestCase.java#1 $
*/
public class InflateDecoderTestCase extends DecoderAbstractTestCase {
public Decoder createDecoder() {
return new InflateDecoder();
}
public Encoder createCompatibleEncoder() {
return new DeflateEncoder();
}
}