java.lang.Object
- java.io.InputStream
- - org.jboss.shrinkwrap.impl.base.io.tar.bzip.BZip2CompressorInputStream

All Implemented Interfaces:

java.io.Closeable, java.lang.AutoCloseable, BZip2Constants
```
public class BZip2CompressorInputStream
extends java.io.InputStream
implements BZip2Constants
```
An input stream that decompresses from the BZip2 format to be read as any other stream.
Forked from Apache Commons-Compress with possible changes

Nested Class Summary

Nested Classes
Modifier and Type Class Description

private static class BZip2CompressorInputStream.Data

Field Summary

Fields
Modifier and Type	Field	Description
`private boolean`	`blockRandomised`
`private int`	`blockSize100k`	always: in the range 0 ..
`private int`	`bsBuff`
`private int`	`bsLive`
`private long`	`bytesRead`
`private int`	`computedBlockCRC`
`private int`	`computedCombinedCRC`
`private CRC`	`crc`
`private int`	`currentChar`
`private int`	`currentState`
`private BZip2CompressorInputStream.Data`	`data`	All memory intensive stuff.
`private boolean`	`decompressConcatenated`
`private static int`	`EOF`
`private java.io.InputStream`	`in`
`private int`	`last`	Index of the last char in the block, so the block size == last + 1.
`private int`	`nInUse`
`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 int`	`origPtr`	Index in zptr[] of original string after sorting.
`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 int`	`storedBlockCRC`
`private int`	`storedCombinedCRC`
`private int`	`su_ch2`
`private int`	`su_chPrev`
`private int`	`su_count`
`private int`	`su_i2`
`private int`	`su_j2`
`private int`	`su_rNToGo`
`private int`	`su_rTPos`
`private int`	`su_tPos`
`private char`	`su_z`

Fields inherited from interface org.jboss.shrinkwrap.impl.base.io.tar.bzip.BZip2Constants
BASEBLOCKSIZE, G_SIZE, MAX_ALPHA_SIZE, MAX_CODE_LEN, MAX_SELECTORS, N_GROUPS, N_ITERS, NUM_OVERSHOOT_BYTES, RUNA, RUNB

Constructor Summary

Constructors
Constructor	Description
`BZip2CompressorInputStream(java.io.InputStream in)`	Constructs a new BZip2CompressorInputStream which decompresses bytes read from the specified stream.
`BZip2CompressorInputStream(java.io.InputStream in, boolean decompressConcatenated)`	Constructs a new BZip2CompressorInputStream which decompresses bytes read from the specified stream.

Method Summary

All Methods Static Methods Instance Methods Concrete Methods Deprecated Methods
Modifier and Type	Method	Description
`private boolean`	`bsGetBit()`
`private int`	`bsGetInt()`
`private char`	`bsGetUByte()`
`private int`	`bsR(int n)`
`void`	`close()`
`private boolean`	`complete()`
`protected void`	`count(int read)`	Increments the counter of already read bytes.
`protected void`	`count(long read)`	Increments the counter of already read bytes.
`private void`	`createHuffmanDecodingTables(int alphaSize, int nGroups)`	Called by recvDecodingTables() exclusively.
`private void`	`endBlock()`
`private void`	`getAndMoveToFrontDecode()`
`private int`	`getAndMoveToFrontDecode0(int groupNo)`
`long`	`getBytesRead()`	Returns the current number of bytes read from this stream.
`int`	`getCount()`	Deprecated. this method may yield wrong results for large archives, use #getBytesRead instead
`private static void`	`hbCreateDecodeTables(int[] limit, int[] base, int[] perm, char[] length, int minLen, int maxLen, int alphaSize)`	Called by createHuffmanDecodingTables() exclusively.
`private boolean`	`init(boolean isFirstStream)`
`private void`	`initBlock()`
`private void`	`makeMaps()`
`static boolean`	`matches(byte[] signature, int length)`	Checks if the signature matches what is expected for a bzip2 file.
`int`	`read()`
`int`	`read(byte[] dest, int offs, int len)`
`private int`	`read0()`
`private void`	`recvDecodingTables()`
`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, read, reset, skip

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

- Field Detail
  - bytesRead
```
private long bytesRead
```
  - last
```
private int last
```
    Index of the last char in the block, so the block size == last + 1.
  - origPtr
```
private int origPtr
```
    Index in zptr[] of original string after sorting.
  - blockSize100k
```
private int blockSize100k
```
    always: in the range 0 .. 9. The current block size is 100000 * this number.
  - blockRandomised
```
private boolean blockRandomised
```
  - bsBuff
```
private int bsBuff
```
  - bsLive
```
private int bsLive
```
  - crc
```
private final CRC crc
```
  - nInUse
```
private int nInUse
```
  - in
```
private java.io.InputStream in
```
  - decompressConcatenated
```
private final boolean decompressConcatenated
```
  - currentChar
```
private int currentChar
```
  - EOF
```
private static final int EOF
```
    See Also:
    
    Constant Field Values
  - 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
  - currentState
```
private int currentState
```
  - storedBlockCRC
```
private int storedBlockCRC
```
  - storedCombinedCRC
```
private int storedCombinedCRC
```
  - computedBlockCRC
```
private int computedBlockCRC
```
  - computedCombinedCRC
```
private int computedCombinedCRC
```
  - su_count
```
private int su_count
```
  - su_ch2
```
private int su_ch2
```
  - su_chPrev
```
private int su_chPrev
```
  - su_i2
```
private int su_i2
```
  - su_j2
```
private int su_j2
```
  - su_rNToGo
```
private int su_rNToGo
```
  - su_rTPos
```
private int su_rTPos
```
  - su_tPos
```
private int su_tPos
```
  - su_z
```
private char su_z
```
  - data
```
private BZip2CompressorInputStream.Data data
```
    All memory intensive stuff. This field is initialized by initBlock().
- Constructor Detail
  - BZip2CompressorInputStream
```
public BZip2CompressorInputStream(java.io.InputStream in)
                           throws java.io.IOException
```
    Constructs a new BZip2CompressorInputStream which decompresses bytes read from the specified stream. This doesn't suppprt decompressing concatenated .bz2 files.
    
    Throws:
    
    java.io.IOException - if the stream content is malformed or an I/O error occurs.
    
    java.lang.NullPointerException - if in == null
  - BZip2CompressorInputStream
```
public BZip2CompressorInputStream(java.io.InputStream in,
                                  boolean decompressConcatenated)
                           throws java.io.IOException
```
    Constructs a new BZip2CompressorInputStream which decompresses bytes read from the specified stream.
    
    Parameters:
    
    in - the InputStream from which this object should be created
    
    decompressConcatenated - if true, decompress until the end of the input; if false, stop after the first .bz2 stream and leave the input position to point to the next byte after the .bz2 stream
    
    Throws:
    
    java.io.IOException - if the stream content is malformed or an I/O error occurs.
    
    java.lang.NullPointerException - if in == null
- Method Detail
  - count
```
protected void count(int read)
```
    Increments the counter of already read bytes. Doesn't increment if the EOF has been hit (read == -1)
    
    Parameters:
    
    read - the number of bytes read
    
    Since:
    
    1.1
  - count
```
protected void count(long read)
```
    Increments the counter of already read bytes. Doesn't increment if the EOF has been hit (read == -1)
    
    Parameters:
    
    read - the number of bytes read
  - getCount
```
@Deprecated
public int getCount()
```
    Deprecated.
    this method may yield wrong results for large archives, use #getBytesRead instead
    
    Returns the current number of bytes read from this stream.
    
    Returns:
    
    the number of read bytes
  - getBytesRead
```
public long getBytesRead()
```
    Returns the current number of bytes read from this stream.
    
    Returns:
    
    the number of read bytes
    
    Since:
    
    1.1
  - read
```
public int read()
         throws java.io.IOException
```
    Specified by:
    
    read in class java.io.InputStream
    
    Throws:
    
    java.io.IOException
  - read
```
public int read(byte[] dest,
                int offs,
                int len)
         throws java.io.IOException
```
    Overrides:
    
    read in class java.io.InputStream
    
    Throws:
    
    java.io.IOException
  - makeMaps
```
private void makeMaps()
```
  - read0
```
private int read0()
           throws java.io.IOException
```
    Throws:
    
    java.io.IOException
  - init
```
private boolean init(boolean isFirstStream)
              throws java.io.IOException
```
    Throws:
    
    java.io.IOException
  - initBlock
```
private void initBlock()
                throws java.io.IOException
```
    Throws:
    
    java.io.IOException
  - endBlock
```
private void endBlock()
               throws java.io.IOException
```
    Throws:
    
    java.io.IOException
  - complete
```
private boolean complete()
                  throws java.io.IOException
```
    Throws:
    
    java.io.IOException
  - 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
  - bsR
```
private int bsR(int n)
         throws java.io.IOException
```
    Throws:
    
    java.io.IOException
  - bsGetBit
```
private boolean bsGetBit()
                  throws java.io.IOException
```
    Throws:
    
    java.io.IOException
  - bsGetUByte
```
private char bsGetUByte()
                 throws java.io.IOException
```
    Throws:
    
    java.io.IOException
  - bsGetInt
```
private int bsGetInt()
              throws java.io.IOException
```
    Throws:
    
    java.io.IOException
  - hbCreateDecodeTables
```
private static void hbCreateDecodeTables(int[] limit,
                                         int[] base,
                                         int[] perm,
                                         char[] length,
                                         int minLen,
                                         int maxLen,
                                         int alphaSize)
```
    Called by createHuffmanDecodingTables() exclusively.
  - recvDecodingTables
```
private void recvDecodingTables()
                         throws java.io.IOException
```
    Throws:
    
    java.io.IOException
  - createHuffmanDecodingTables
```
private void createHuffmanDecodingTables(int alphaSize,
                                         int nGroups)
```
    Called by recvDecodingTables() exclusively.
  - getAndMoveToFrontDecode
```
private void getAndMoveToFrontDecode()
                              throws java.io.IOException
```
    Throws:
    
    java.io.IOException
  - getAndMoveToFrontDecode0
```
private int getAndMoveToFrontDecode0(int groupNo)
                              throws java.io.IOException
```
    Throws:
    
    java.io.IOException
  - setupBlock
```
private void setupBlock()
                 throws java.io.IOException
```
    Throws:
    
    java.io.IOException
  - setupRandPartA
```
private void setupRandPartA()
                     throws java.io.IOException
```
    Throws:
    
    java.io.IOException
  - setupNoRandPartA
```
private void setupNoRandPartA()
                       throws java.io.IOException
```
    Throws:
    
    java.io.IOException
  - setupRandPartB
```
private void setupRandPartB()
                     throws java.io.IOException
```
    Throws:
    
    java.io.IOException
  - setupRandPartC
```
private void setupRandPartC()
                     throws java.io.IOException
```
    Throws:
    
    java.io.IOException
  - setupNoRandPartB
```
private void setupNoRandPartB()
                       throws java.io.IOException
```
    Throws:
    
    java.io.IOException
  - setupNoRandPartC
```
private void setupNoRandPartC()
                       throws java.io.IOException
```
    Throws:
    
    java.io.IOException
  - matches
```
public static boolean matches(byte[] signature,
                              int length)
```
    Checks if the signature matches what is expected for a bzip2 file.
    
    Parameters:
    
    signature - the bytes to check
    
    length - the number of bytes to check
    
    Returns:
    
    true, if this stream is a bzip2 compressed stream, false otherwise
    
    Since:
    
    1.1

Class BZip2CompressorInputStream

Nested Class Summary

Field Summary

Fields inherited from interface org.jboss.shrinkwrap.impl.base.io.tar.bzip.BZip2Constants

Constructor Summary

Method Summary

Methods inherited from class java.io.InputStream

Methods inherited from class java.lang.Object

Field Detail

bytesRead

last

origPtr

blockSize100k

blockRandomised

bsBuff

bsLive

crc

nInUse

in

decompressConcatenated

currentChar

EOF

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

currentState

storedBlockCRC

storedCombinedCRC

computedBlockCRC

computedCombinedCRC

su_count

su_ch2

su_chPrev

su_i2

su_j2

su_rNToGo

su_rTPos

su_tPos

su_z

data

Constructor Detail

BZip2CompressorInputStream

BZip2CompressorInputStream

Method Detail

count

count

getCount

getBytesRead

read

read

makeMaps

read0

init

initBlock

endBlock

complete

close

bsR

bsGetBit

bsGetUByte

bsGetInt

hbCreateDecodeTables

recvDecodingTables

createHuffmanDecodingTables

getAndMoveToFrontDecode

getAndMoveToFrontDecode0

setupBlock

setupRandPartA

setupNoRandPartA

setupRandPartB

setupRandPartC

setupNoRandPartB

setupNoRandPartC

matches