Class BlockLZ4CompressorOutputStream
- java.lang.Object
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- java.io.OutputStream
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- org.apache.commons.compress.compressors.CompressorOutputStream
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- org.apache.commons.compress.compressors.lz4.BlockLZ4CompressorOutputStream
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- All Implemented Interfaces:
Closeable
,Flushable
,AutoCloseable
public class BlockLZ4CompressorOutputStream extends CompressorOutputStream
CompressorOutputStream for the LZ4 block format.- Since:
- 1.14
- See Also:
- LZ4 Block Format Description
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Constructor Summary
Constructors Constructor Description BlockLZ4CompressorOutputStream(OutputStream os)
Creates a new LZ4 output stream.BlockLZ4CompressorOutputStream(OutputStream os, Parameters params)
Creates a new LZ4 output stream.
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Method Summary
All Methods Static Methods Instance Methods Concrete Methods Modifier and Type Method Description void
close()
static Parameters.Builder
createParameterBuilder()
Returns a builder correctly configured for the LZ4 algorithm.void
finish()
Compresses all remaining data and writes it to the stream, doesn't close the underlying stream.void
prefill(byte[] data, int off, int len)
Adds some initial data to fill the window with.void
write(byte[] data, int off, int len)
void
write(int b)
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Methods inherited from class java.io.OutputStream
flush, nullOutputStream, write
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Constructor Detail
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BlockLZ4CompressorOutputStream
public BlockLZ4CompressorOutputStream(OutputStream os) throws IOException
Creates a new LZ4 output stream.- Parameters:
os
- An OutputStream to read compressed data from- Throws:
IOException
- if reading fails
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BlockLZ4CompressorOutputStream
public BlockLZ4CompressorOutputStream(OutputStream os, Parameters params) throws IOException
Creates a new LZ4 output stream.- Parameters:
os
- An OutputStream to read compressed data fromparams
- The parameters to use for LZ77 compression.- Throws:
IOException
- if reading fails
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Method Detail
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write
public void write(int b) throws IOException
- Specified by:
write
in classOutputStream
- Throws:
IOException
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write
public void write(byte[] data, int off, int len) throws IOException
- Overrides:
write
in classOutputStream
- Throws:
IOException
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close
public void close() throws IOException
- Specified by:
close
in interfaceAutoCloseable
- Specified by:
close
in interfaceCloseable
- Overrides:
close
in classOutputStream
- Throws:
IOException
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finish
public void finish() throws IOException
Compresses all remaining data and writes it to the stream, doesn't close the underlying stream.- Throws:
IOException
- if an error occurs
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prefill
public void prefill(byte[] data, int off, int len)
Adds some initial data to fill the window with.- Parameters:
data
- the data to fill the window with.off
- offset of real data into the arraylen
- amount of data- Throws:
IllegalStateException
- if the stream has already started to write data- See Also:
LZ77Compressor.prefill(byte[])
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createParameterBuilder
public static Parameters.Builder createParameterBuilder()
Returns a builder correctly configured for the LZ4 algorithm.- Returns:
- a builder correctly configured for the LZ4 algorithm
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