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 Details

    • CompressedStreamStore

      protected CompressedStreamStore(byte[] data, int offset, int length) throws IOException
      Creates a new compressed StreamStore, which will handle the decompression.
      Throws:
      IOException
  • Method Details

    • _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 IOException
      Decompresses the given data, returning it as header + contents
      Throws:
      IOException