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  * 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
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * See the License for the specific language governing permissions and
 * limitations under the License.
package com.indeed.util.compress;
A compression input stream.

Implementations are assumed to be buffered. This permits clients to reposition the underlying input stream then call resetState(), without having to also synchronize client buffers.

public abstract class CompressionInputStream extends InputStream {
The input stream to be compressed.
  protected final InputStream in;

Create a compression input stream that reads the decompressed bytes from the given stream.

in The input stream to be compressed.
  protected CompressionInputStream(InputStream inthrows IOException {
    this. = in;
  public void close() throws IOException {
Read bytes from the stream. Made abstract to prevent leakage to underlying stream.
  public abstract int read(byte[] bint offint lenthrows IOException;

Reset the decompressor to its initial state and discard any buffered data, as the underlying stream may have been repositioned.
  public abstract void resetState() throws IOException;
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