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## org.apache.poi.hdgf.streams
Class CompressedStreamStore

    java.lang.Object
      org.apache.poi.hdgf.streams.StreamStore
          org.apache.poi.hdgf.streams.CompressedStreamStore

    public final class CompressedStreamStore

extends StreamStore

A StreamStore where the data on-disk is compressed, using the crazy Visio LZW

Constructor Summary
`protected` | `CompressedStreamStore(byte[] data, int offset, int length)` Creates a new compressed StreamStore, which will handle the decompression.

Method Summary
`protected byte[]` | `_getBlockHeader()`
`protected byte[]` | `_getCompressedContents()`
`protected void` | `copyBlockHeaderToContents()` Some kinds of streams expect their 4 byte header to be on the front of the contents.
`static byte[][]` | `decompress(byte[] data, int offset, int length)` Decompresses the given data, returning it as header + contents

Methods inherited from class org.apache.poi.hdgf.streams.StreamStore
`_getContents, getContents, prependContentsWith`

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

Constructor Detail

### CompressedStreamStore

    protected CompressedStreamStore(byte[] data,
                                    int offset,
                                    int length)
                             throws java.io.IOException

  Creates a new compressed StreamStore, which will handle the decompression.

  Throws:
    `java.io.IOException`

Method Detail

### _getCompressedContents

    protected byte[] _getCompressedContents()

### _getBlockHeader

    protected byte[] _getBlockHeader()

### copyBlockHeaderToContents

    protected void copyBlockHeaderToContents()

  Some kinds of streams expect their 4 byte header to be on the front of the contents. They can call this to have it sorted.

  Overrides:
    `copyBlockHeaderToContents` in class `StreamStore`

### decompress

    public static byte[][] decompress(byte[] data,
                                      int offset,
                                      int length)
                               throws java.io.IOException

  Decompresses the given data, returning it as header + contents

  Throws:
    `java.io.IOException`

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Copyright 2017 The Apache Software Foundation or its licensors, as applicable.