java.lang.Object
- java.io.InputStream
- - org.apache.commons.compress.compressors.bzip2.BZip2InputStream

All Implemented Interfaces:

java.io.Closeable, java.lang.AutoCloseable, BZip2Constants
```
public class BZip2InputStream
extends java.io.InputStream
implements BZip2Constants
```
An input stream that decompresses from the BZip2 format (without the file header chars) to be read as any other stream.

Author:

Keiron Liddle

Field Summary

Fields
Modifier and Type	Field	Description
`private int`	`ch2`
`private int`	`chPrev`
`private int`	`count`
`private int`	`i2`
`private int`	`j2`
`private int[][]`	`m_base`
`private boolean`	`m_blockRandomised`
`private int`	`m_blockSize100k`
`private int`	`m_bsBuff`
`private int`	`m_bsLive`
`private int`	`m_computedBlockCRC`
`private int`	`m_computedCombinedCRC`
`private CRC`	`m_crc`
`private int`	`m_currentChar`
`private int`	`m_currentState`
`private java.io.InputStream`	`m_input`
`private boolean[]`	`m_inUse`
`private int`	`m_last`
`private int[][]`	`m_limit`
`private char[]`	`m_ll8`
`private int[]`	`m_minLens`
`private int`	`m_nInUse`
`private int`	`m_origPtr`
`private int[][]`	`m_perm`
`private int`	`m_rNToGo`
`private int`	`m_rTPos`
`private char[]`	`m_selector`
`private char[]`	`m_selectorMtf`
`private char[]`	`m_seqToUnseq`
`private int`	`m_storedBlockCRC`
`private int`	`m_storedCombinedCRC`
`private boolean`	`m_streamEnd`
`private int`	`m_tPos`
`private int[]`	`m_tt`
`private char[]`	`m_unseqToSeq`
`private int[]`	`m_unzftab`
`private static int`	`NO_RAND_PART_A_STATE`
`private static int`	`NO_RAND_PART_B_STATE`
`private static int`	`NO_RAND_PART_C_STATE`
`private static int`	`RAND_PART_A_STATE`
`private static int`	`RAND_PART_B_STATE`
`private static int`	`RAND_PART_C_STATE`
`private static int`	`START_BLOCK_STATE`
`private char`	`z`

Fields inherited from interface org.apache.commons.compress.compressors.bzip2.BZip2Constants
BASE_BLOCK_SIZE, G_SIZE, MAX_ALPHA_SIZE, MAX_CODE_LEN, MAX_SELECTORS, N_GROUPS, N_ITERS, NUM_OVERSHOOT_BYTES, RAND_NUMS, RUNA, RUNB

Constructor Summary

Constructors
Constructor Description

BZip2InputStream(java.io.InputStream input)
Initializes ein CBZip2 InputStream with the give InputStream

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`private static void`	`badBlockHeader()`
`private static void`	`blockOverrun()`
`private void`	`bsFinishedWithStream()`
`private int`	`bsR(int n)`
`private void`	`bsSetStream(java.io.InputStream input)`
`private void`	`buildInUseTable()`
`private static void`	`cadvise()`
`void`	`close()`
`private void`	`complete()`
`private static void`	`compressedStreamEOF()`
`private static void`	`crcError()`
`private void`	`endBlock()`
`private void`	`getAndMoveToFrontDecode()`
`private void`	`hbCreateDecodeTables(int[] limit, int[] base, int[] perm, char[] length, int minLen, int maxLen, int alphaSize)`
`private void`	`initBlock()`
`private void`	`initialize()`
`private void`	`makeMaps()`
`int`	`read()`
`private int`	`readInt()`
`private char`	`readUnsignedChar()`
`private int`	`readVariableSizedInt(int numBits)`
`private void`	`recvDecodingTables()`
`private void`	`setDecompressStructureSizes(int newSize100k)`
`private void`	`setupBlock()`
`private void`	`setupNoRandPartA()`
`private void`	`setupNoRandPartB()`
`private void`	`setupNoRandPartC()`
`private void`	`setupRandPartA()`
`private void`	`setupRandPartB()`
`private void`	`setupRandPartC()`

Methods inherited from class java.io.InputStream
available, mark, markSupported, nullInputStream, read, read, readAllBytes, readNBytes, readNBytes, reset, skip, transferTo

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

Field Detail

START_BLOCK_STATE
```
private static final int START_BLOCK_STATE
```
See Also:

Constant Field Values

RAND_PART_A_STATE
```
private static final int RAND_PART_A_STATE
```
See Also:

Constant Field Values

RAND_PART_B_STATE
```
private static final int RAND_PART_B_STATE
```
See Also:

Constant Field Values

RAND_PART_C_STATE
```
private static final int RAND_PART_C_STATE
```
See Also:

Constant Field Values

NO_RAND_PART_A_STATE
```
private static final int NO_RAND_PART_A_STATE
```
See Also:

Constant Field Values

NO_RAND_PART_B_STATE
```
private static final int NO_RAND_PART_B_STATE
```
See Also:

Constant Field Values

NO_RAND_PART_C_STATE
```
private static final int NO_RAND_PART_C_STATE
```
See Also:

Constant Field Values

m_crc
```
private CRC m_crc
```

m_inUse
```
private boolean[] m_inUse
```

m_seqToUnseq
```
private char[] m_seqToUnseq
```

m_unseqToSeq
```
private char[] m_unseqToSeq
```

m_selector
```
private char[] m_selector
```

m_selectorMtf
```
private char[] m_selectorMtf
```

m_unzftab
```
private int[] m_unzftab
```

m_limit
```
private int[][] m_limit
```

m_base
```
private int[][] m_base
```

m_perm
```
private int[][] m_perm
```

m_minLens
```
private int[] m_minLens
```

m_streamEnd
```
private boolean m_streamEnd
```

m_currentChar
```
private int m_currentChar
```

m_currentState
```
private int m_currentState
```

m_rNToGo
```
private int m_rNToGo
```

m_rTPos
```
private int m_rTPos
```

m_tPos
```
private int m_tPos
```

i2
```
private int i2
```

count
```
private int count
```

chPrev
```
private int chPrev
```

ch2
```
private int ch2
```

j2
```
private int j2
```

z
```
private char z
```

m_blockRandomised
```
private boolean m_blockRandomised
```

m_blockSize100k
```
private int m_blockSize100k
```

m_bsBuff
```
private int m_bsBuff
```

m_bsLive
```
private int m_bsLive
```

m_input
```
private java.io.InputStream m_input
```

m_computedBlockCRC
```
private int m_computedBlockCRC
```

m_computedCombinedCRC
```
private int m_computedCombinedCRC
```

m_last
```
private int m_last
```

m_ll8
```
private char[] m_ll8
```

m_nInUse
```
private int m_nInUse
```

m_origPtr
```
private int m_origPtr
```

m_storedBlockCRC
```
private int m_storedBlockCRC
```

m_storedCombinedCRC
```
private int m_storedCombinedCRC
```

m_tt
```
private int[] m_tt
```

Constructor Detail
- BZip2InputStream
```
public BZip2InputStream(java.io.InputStream input)
```
  Initializes ein CBZip2 InputStream with the give InputStream
  
  Parameters:
  
  input - the InputStream to initialize with

Method Detail

badBlockHeader
```
private static void badBlockHeader()
```

blockOverrun
```
private static void blockOverrun()
```

cadvise
```
private static void cadvise()
```

compressedStreamEOF

private static void compressedStreamEOF()

crcError
```
private static void crcError()
```

read
```
public int read()
```
Specified by:

read in class java.io.InputStream

setDecompressStructureSizes

private void setDecompressStructureSizes(int newSize100k)

setupBlock
```
private void setupBlock()
```

setupNoRandPartA
```
private void setupNoRandPartA()
```

setupNoRandPartB
```
private void setupNoRandPartB()
```

setupNoRandPartC
```
private void setupNoRandPartC()
```

setupRandPartA
```
private void setupRandPartA()
```

setupRandPartB
```
private void setupRandPartB()
```

setupRandPartC
```
private void setupRandPartC()
```

getAndMoveToFrontDecode

private void getAndMoveToFrontDecode()

bsFinishedWithStream
```
private void bsFinishedWithStream()
```

readVariableSizedInt

private int readVariableSizedInt(int numBits)

readUnsignedChar
```
private char readUnsignedChar()
```

readInt
```
private int readInt()
```

bsR
```
private int bsR(int n)
```

bsSetStream

private void bsSetStream(java.io.InputStream input)

complete
```
private void complete()
```

endBlock
```
private void endBlock()
```

hbCreateDecodeTables

private void hbCreateDecodeTables(int[] limit,
                                  int[] base,
                                  int[] perm,
                                  char[] length,
                                  int minLen,
                                  int maxLen,
                                  int alphaSize)

initBlock
```
private void initBlock()
```

initialize
```
private void initialize()
```

makeMaps
```
private void makeMaps()
```

recvDecodingTables
```
private void recvDecodingTables()
```

buildInUseTable
```
private void buildInUseTable()
```

close
```
public void close()
           throws java.io.IOException
```
Specified by:

close in interface java.lang.AutoCloseable

Specified by:

close in interface java.io.Closeable

Overrides:

close in class java.io.InputStream

Throws:

java.io.IOException

Class BZip2InputStream

Field Summary

Fields inherited from interface org.apache.commons.compress.compressors.bzip2.BZip2Constants

Constructor Summary

Method Summary

Methods inherited from class java.io.InputStream

Methods inherited from class java.lang.Object

Field Detail

START_BLOCK_STATE

RAND_PART_A_STATE

RAND_PART_B_STATE

RAND_PART_C_STATE

NO_RAND_PART_A_STATE

NO_RAND_PART_B_STATE

NO_RAND_PART_C_STATE

m_crc

m_inUse

m_seqToUnseq

m_unseqToSeq

m_selector

m_selectorMtf

m_unzftab

m_limit

m_base

m_perm

m_minLens

m_streamEnd

m_currentChar

m_currentState

m_rNToGo

m_rTPos

m_tPos

i2

count

chPrev

ch2

j2

z

m_blockRandomised

m_blockSize100k

m_bsBuff

m_bsLive

m_input

m_computedBlockCRC

m_computedCombinedCRC

m_last

m_ll8

m_nInUse

m_origPtr

m_storedBlockCRC

m_storedCombinedCRC

m_tt

Constructor Detail

BZip2InputStream

Method Detail

badBlockHeader

blockOverrun

cadvise

compressedStreamEOF

crcError

read

setDecompressStructureSizes

setupBlock

setupNoRandPartA

setupNoRandPartB

setupNoRandPartC

setupRandPartA

setupRandPartB

setupRandPartC

getAndMoveToFrontDecode

bsFinishedWithStream

readVariableSizedInt

readUnsignedChar

readInt

bsR

bsSetStream

complete

endBlock

hbCreateDecodeTables

initBlock