mirror of
https://github.com/haraldk/TwelveMonkeys.git
synced 2025-10-04 11:26:44 -04:00
- 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:
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/*
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* Copyright (c) 2008, Harald Kuhr
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* * Neither the name "TwelveMonkeys" nor the
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* names of its contributors may be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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package com.twelvemonkeys.io.enc;
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import java.io.OutputStream;
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import java.io.IOException;
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import java.util.zip.Deflater;
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/**
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* {@code Encoder} implementation for standard DEFLATE encoding.
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* <p/>
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*
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* @author <a href="mailto:harald.kuhr@gmail.com">Harald Kuhr</a>
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* @version $Id: //depot/branches/personal/haraldk/twelvemonkeys/release-2/twelvemonkeys-core/src/main/java/com/twelvemonkeys/io/enc/DeflateEncoder.java#2 $
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*
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* @see <a href="http://tools.ietf.org/html/rfc1951">RFC 1951</a>
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* @see Deflater
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* @see InflateDecoder
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* @see java.util.zip.DeflaterOutputStream
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*/
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final class DeflateEncoder implements Encoder {
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private final Deflater mDeflater;
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private final byte[] mBuffer = new byte[1024];
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public DeflateEncoder() {
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// this(new Deflater());
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this(new Deflater(Deflater.DEFAULT_COMPRESSION, true)); // TODO: Should we use "no wrap"?
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}
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public DeflateEncoder(final Deflater pDeflater) {
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if (pDeflater == null) {
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throw new IllegalArgumentException("deflater == null");
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}
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mDeflater = pDeflater;
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}
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public void encode(final OutputStream pStream, final byte[] pBuffer, final int pOffset, final int pLength)
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throws IOException
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{
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System.out.println("DeflateEncoder.encode");
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mDeflater.setInput(pBuffer, pOffset, pLength);
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flushInputToStream(pStream);
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}
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private void flushInputToStream(final OutputStream pStream) throws IOException {
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System.out.println("DeflateEncoder.flushInputToStream");
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if (mDeflater.needsInput()) {
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System.out.println("Foo");
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}
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while (!mDeflater.needsInput()) {
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int deflated = mDeflater.deflate(mBuffer, 0, mBuffer.length);
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pStream.write(mBuffer, 0, deflated);
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System.out.println("flushed " + deflated);
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}
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}
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// public void flush() {
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// mDeflater.finish();
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// }
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}
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@@ -0,0 +1,109 @@
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/*
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* Copyright (c) 2008, Harald Kuhr
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* * Neither the name "TwelveMonkeys" nor the
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* names of its contributors may be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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package com.twelvemonkeys.io.enc;
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import java.io.EOFException;
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import java.io.IOException;
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import java.io.InputStream;
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import java.util.zip.DataFormatException;
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import java.util.zip.Inflater;
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/**
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* {@code Decoder} implementation for standard DEFLATE encoding.
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* <p/>
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*
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* @see <a href="http://tools.ietf.org/html/rfc1951">RFC 1951</a>
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*
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* @see Inflater
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* @see DeflateEncoder
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* @see java.util.zip.InflaterInputStream
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*
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* @author <a href="mailto:harald.kuhr@gmail.com">Harald Kuhr</a>
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* @version $Id: //depot/branches/personal/haraldk/twelvemonkeys/release-2/twelvemonkeys-core/src/main/java/com/twelvemonkeys/io/enc/InflateDecoder.java#2 $
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*/
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final class InflateDecoder implements Decoder {
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private final Inflater mInflater;
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private final byte[] mBuffer;
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/**
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* Creates an {@code InflateDecoder}
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*
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*/
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public InflateDecoder() {
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this(new Inflater(true));
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}
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/**
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* Creates an {@code InflateDecoder}
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*
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* @param pInflater the inflater instance to use
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*/
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public InflateDecoder(final Inflater pInflater) {
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if (pInflater == null) {
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throw new IllegalArgumentException("inflater == null");
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}
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mInflater = pInflater;
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mBuffer = new byte[1024];
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}
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public int decode(final InputStream pStream, final byte[] pBuffer) throws IOException {
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try {
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int decoded;
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while ((decoded = mInflater.inflate(pBuffer, 0, pBuffer.length)) == 0) {
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if (mInflater.finished() || mInflater.needsDictionary()) {
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return 0;
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}
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if (mInflater.needsInput()) {
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fill(pStream);
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}
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}
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return decoded;
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}
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catch (DataFormatException e) {
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String message = e.getMessage();
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throw new DecodeException(message != null ? message : "Invalid ZLIB data format", e);
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}
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}
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private void fill(final InputStream pStream) throws IOException {
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int available = pStream.read(mBuffer, 0, mBuffer.length);
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if (available == -1) {
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throw new EOFException("Unexpected end of ZLIB stream");
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}
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mInflater.setInput(mBuffer, 0, available);
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}
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}
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@@ -0,0 +1,46 @@
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/*
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* Copyright (c) 2008, Harald Kuhr
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
|
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* * Redistributions of source code must retain the above copyright
|
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* notice, this list of conditions and the following disclaimer.
|
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* * Redistributions in binary form must reproduce the above copyright
|
||||
* notice, this list of conditions and the following disclaimer in the
|
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* documentation and/or other materials provided with the distribution.
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* * Neither the name "TwelveMonkeys" nor the
|
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* names of its contributors may be used to endorse or promote products
|
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* derived from this software without specific prior written permission.
|
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*
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* 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,
|
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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package com.twelvemonkeys.io.enc;
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import java.io.InputStream;
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import java.io.IOException;
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/**
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* LZWDecoder.
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* <p/>
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*
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* @author <a href="mailto:harald.kuhr@gmail.com">Harald Kuhr</a>
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* @version $Id: //depot/branches/personal/haraldk/twelvemonkeys/release-2/twelvemonkeys-core/src/main/java/com/twelvemonkeys/io/enc/LZWDecoder.java#2 $
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*/
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final class LZWDecoder implements Decoder {
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public int decode(InputStream pStream, byte[] pBuffer) throws IOException {
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return 0; // TODO: Implement
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// TODO: We probably need a GIF specific subclass
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}
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}
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@@ -0,0 +1,46 @@
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/*
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* Copyright (c) 2008, Harald Kuhr
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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||||
* 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.
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||||
* * Neither the name "TwelveMonkeys" nor the
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* names of its contributors may be used to endorse or promote products
|
||||
* derived from this software without specific prior written permission.
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||||
*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
||||
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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||||
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
|
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
|
||||
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
|
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
|
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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||||
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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package com.twelvemonkeys.io.enc;
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import java.io.OutputStream;
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import java.io.IOException;
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/**
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* LZWEncoder.
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* <p/>
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*
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* @author <a href="mailto:harald.kuhr@gmail.com">Harald Kuhr</a>
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* @version $Id: //depot/branches/personal/haraldk/twelvemonkeys/release-2/twelvemonkeys-core/src/main/java/com/twelvemonkeys/io/enc/LZWEncoder.java#2 $
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*/
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final class LZWEncoder implements Encoder {
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public void encode(OutputStream pStream, byte[] pBuffer, int pOffset, int pLength) throws IOException {
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// TODO: Implement
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// TODO: We probably need a GIF specific subclass
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}
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}
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@@ -0,0 +1,18 @@
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package com.twelvemonkeys.io.enc;
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/**
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* DeflateEncoderTest
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* <p/>
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*
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* @author <a href="mailto:harald.kuhr@gmail.com">Harald Kuhr</a>
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* @version $Id: //depot/branches/personal/haraldk/twelvemonkeys/release-2/twelvemonkeys-core/src/test/java/com/twelvemonkeys/io/enc/DeflateDecoderTestCase.java#1 $
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*/
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public class DeflateEncoderTestCase extends EncoderAbstractTestCase {
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protected Encoder createEncoder() {
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return new DeflateEncoder();
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}
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protected Decoder createCompatibleDecoder() {
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return new InflateDecoder();
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}
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}
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@@ -0,0 +1,18 @@
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package com.twelvemonkeys.io.enc;
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/**
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* InflateEncoderTest
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* <p/>
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*
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* @author <a href="mailto:harald.kuhr@gmail.com">Harald Kuhr</a>
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* @version $Id: //depot/branches/personal/haraldk/twelvemonkeys/release-2/twelvemonkeys-core/src/test/java/com/twelvemonkeys/io/enc/InflateDecoderTestCase.java#1 $
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*/
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public class InflateDecoderTestCase extends DecoderAbstractTestCase {
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public Decoder createDecoder() {
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return new InflateDecoder();
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}
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public Encoder createCompatibleEncoder() {
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return new DeflateEncoder();
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}
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}
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