CompressorStreamFactory (Apache Commons Compress 1.7 API)

java.lang.Object
- org.apache.commons.compress.compressors.CompressorStreamFactory

public class CompressorStreamFactory
extends Object

Factory to create Compressor[In|Out]putStreams from names. To add other implementations you should extend CompressorStreamFactory and override the appropriate methods (and call their implementation from super of course).

Example (Compressing a file):

 final OutputStream out = new FileOutputStream(output); 
 CompressorOutputStream cos = 
      new CompressorStreamFactory().createCompressorOutputStream(CompressorStreamFactory.BZIP2, out);
 IOUtils.copy(new FileInputStream(input), cos);
 cos.close();

Example (Decompressing a file):

 final InputStream is = new FileInputStream(input); 
 CompressorInputStream in = 
      new CompressorStreamFactory().createCompressorInputStream(CompressorStreamFactory.BZIP2, is);
 IOUtils.copy(in, new FileOutputStream(output));
 in.close();

Field Summary

Fields
Modifier and Type	Field and Description
`static String`	`BZIP2` Constant used to identify the BZIP2 compression algorithm.
`static String`	`GZIP` Constant used to identify the GZIP compression algorithm.
`static String`	`LZMA` Constant used to identify the LZMA compression method.
`static String`	`PACK200` Constant used to identify the PACK200 compression algorithm.
`static String`	`SNAPPY_FRAMED` Constant used to identify the "framed" Snappy compression method.
`static String`	`SNAPPY_RAW` Constant used to identify the "raw" Snappy compression method.
`static String`	`XZ` Constant used to identify the XZ compression method.
`static String`	`Z` Constant used to identify the traditional Unix compress method.

Constructor Summary

Constructors
Constructor and Description

CompressorStreamFactory()

Constructors
Constructor and Description
`CompressorStreamFactory()`

Method Summary

Methods
Modifier and Type	Method and Description
`CompressorInputStream`	`createCompressorInputStream(InputStream in)` Create an compressor input stream from an input stream, autodetecting the compressor type from the first few bytes of the stream.
`CompressorInputStream`	`createCompressorInputStream(String name, InputStream in)` Create a compressor input stream from a compressor name and an input stream.
`CompressorOutputStream`	`createCompressorOutputStream(String name, OutputStream out)` Create an compressor output stream from an compressor name and an input stream.
`void`	`setDecompressConcatenated(boolean decompressConcatenated)` Whether to decompress the full input or only the first stream in formats supporting multiple concatenated input streams.

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

- Field Detail
  - BZIP2
```
public static final String BZIP2
```
    Constant used to identify the BZIP2 compression algorithm.
    
    Since:
    
    1.1
    
    See Also:
    Constant Field Values
  - GZIP
```
public static final String GZIP
```
    Constant used to identify the GZIP compression algorithm.
    
    Since:
    
    1.1
    
    See Also:
    Constant Field Values
  - PACK200
```
public static final String PACK200
```
    Constant used to identify the PACK200 compression algorithm.
    
    Since:
    
    1.3
    
    See Also:
    Constant Field Values
  - XZ
```
public static final String XZ
```
    Constant used to identify the XZ compression method.
    
    Since:
    
    1.4
    
    See Also:
    Constant Field Values
  - LZMA
```
public static final String LZMA
```
    Constant used to identify the LZMA compression method.
    
    Since:
    
    1.6
    
    See Also:
    Constant Field Values
  - SNAPPY_FRAMED
```
public static final String SNAPPY_FRAMED
```
    Constant used to identify the "framed" Snappy compression method.
    
    Since:
    
    1.7
    
    See Also:
    Constant Field Values
  - SNAPPY_RAW
```
public static final String SNAPPY_RAW
```
    Constant used to identify the "raw" Snappy compression method.
    
    Since:
    
    1.7
    
    See Also:
    Constant Field Values
  - Z
```
public static final String Z
```
    Constant used to identify the traditional Unix compress method.
    
    Since:
    
    1.7
    
    See Also:
    Constant Field Values
- Constructor Detail
  - CompressorStreamFactory
```
public CompressorStreamFactory()
```
- Method Detail
  - setDecompressConcatenated
```
public void setDecompressConcatenated(boolean decompressConcatenated)
```
    Whether to decompress the full input or only the first stream in formats supporting multiple concatenated input streams.
    This setting applies to the gzip, bzip2 and xz formats only.
    
    Parameters:
    decompressConcatenated - if true, decompress until the end of the input; if false, stop after the first stream and leave the input position to point to the next byte after the stream
    Since:
    
    1.5
  - createCompressorInputStream
```
public CompressorInputStream createCompressorInputStream(InputStream in)
                                                  throws CompressorException
```
    Create an compressor input stream from an input stream, autodetecting the compressor type from the first few bytes of the stream. The InputStream must support marks, like BufferedInputStream.
    
    Parameters:
    in - the input stream
    
    Returns:
    the compressor input stream
    
    Throws:
    
    CompressorException - if the compressor name is not known
    
    IllegalArgumentException - if the stream is null or does not support mark
    Since:
    
    1.1
  - createCompressorInputStream
```
public CompressorInputStream createCompressorInputStream(String name,
                                                InputStream in)
                                                  throws CompressorException
```
    Create a compressor input stream from a compressor name and an input stream.
    
    Parameters:
    name - of the compressor, i.e. "gz", "bzip2", "xz", "lzma", "snappy-raw", "snappy-framed", "pack200", "z"
    in - the input stream
    
    Returns:
    compressor input stream
    
    Throws:
    
    CompressorException - if the compressor name is not known
    
    IllegalArgumentException - if the name or input stream is null
  - createCompressorOutputStream
```
public CompressorOutputStream createCompressorOutputStream(String name,
                                                  OutputStream out)
                                                    throws CompressorException
```
    Create an compressor output stream from an compressor name and an input stream.
    
    Parameters:
    name - the compressor name, i.e. "gz", "bzip2", "xz", or "pack200"
    out - the output stream
    
    Returns:
    the compressor output stream
    
    Throws:
    
    CompressorException - if the archiver name is not known
    
    IllegalArgumentException - if the archiver name or stream is null

Class CompressorStreamFactory

Field Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

BZIP2

GZIP

PACK200

XZ

LZMA

SNAPPY_FRAMED

SNAPPY_RAW

Z

Constructor Detail

CompressorStreamFactory

Method Detail

setDecompressConcatenated

createCompressorInputStream

createCompressorInputStream

createCompressorOutputStream