Top Description Fields Constructors Methods
org.bouncycastle.apache.bzip2

public Class CBZip2InputStream

extends InputStream
implements BZip2Constants
Class Inheritance
All Implemented Interfaces
org.bouncycastle.apache.bzip2.BZip2Constants
Imports
java.io.EOFException, .IOException, .InputStream, org.bouncycastle.util.Arrays, .Integers
An input stream that decompresses from the BZip2 format (with the file header chars) to be read as any other stream.
Author
Keiron Liddle NB: note this class has been modified to read the leading BZ from the start of the BZIP2 stream to make it compatible with other PGP programs.

Field Summary

Modifier and TypeField and Description
private int[][]
base

private final CRC
blockCRC

private int
blockSize100k

private int
bsBuff

private int
bsLive

private InputStream
bsStream

pack-priv int
ch2

pack-priv int
chPrev

pack-priv int
count

private int
currentByte

private int
currentState

private int
expectedBlockCRC

private int
expectedStreamCRC

pack-priv int
i

pack-priv int
i2

pack-priv int
j2

private int
last

private int[][]
limit

private byte[]
ll8

private int[]
minLens

private int
nInUse

private static final int
NO_RAND_PART_B_STATE

private static final int
NO_RAND_PART_C_STATE

private int
origPtr

private int[][]
perm

private static final int
RAND_PART_B_STATE

private static final int
RAND_PART_C_STATE

pack-priv int
rNToGo

pack-priv int
rTPos

private byte[]
selectors

private byte[]
seqToUnseq

private int
streamCRC

private boolean
streamEnd

pack-priv int
tPos

private int[]
tt

private int[]
unzftab

pack-priv int
z

Constructor Summary

AccessConstructor and Description
public
CBZip2InputStream(InputStream zStream)

Method Summary

Modifier and TypeMethod and Description
private void
beginBlock()

private void
bsFinishedWithStream()

private int
bsGetBit()

private int
bsGetBits(int n)

private int
bsGetBitsSmall(int n)

private int
bsGetInt32()

private long
bsGetLong48()

private void
endBlock()

private void
getAndMoveToFrontDecode()

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

public int
read()

Implements abstract java.io.InputStream.read.

Reads the next byte of data from the input stream.
private int
recvDecodingTables()

private int
requireByte()

private void
setupNoRandPartA()

private void
setupNoRandPartB()

private void
setupNoRandPartC()

private void
setupRandPartA()

private void
setupRandPartB()

private void
setupRandPartC()

Inherited from java.io.InputStream:
availableclosemarkmarkSupportednullInputStreamreadreadreadAllBytesreadNBytesreadNBytesresetskipskipNBytestransferTo

Field Detail

baseback to summary
private int[][] base
blockCRCback to summary
private final CRC blockCRC
blockSize100kback to summary
private int blockSize100k
bsBuffback to summary
private int bsBuff
bsLiveback to summary
private int bsLive
bsStreamback to summary
private InputStream bsStream
ch2back to summary
pack-priv int ch2
chPrevback to summary
pack-priv int chPrev
countback to summary
pack-priv int count
currentByteback to summary
private int currentByte
currentStateback to summary
private int currentState
expectedBlockCRCback to summary
private int expectedBlockCRC
expectedStreamCRCback to summary
private int expectedStreamCRC
iback to summary
pack-priv int i
i2back to summary
pack-priv int i2
j2back to summary
pack-priv int j2
lastback to summary
private int last
limitback to summary
private int[][] limit
ll8back to summary
private byte[] ll8
minLensback to summary
private int[] minLens
nInUseback to summary
private int nInUse
NO_RAND_PART_B_STATEback to summary
private static final int NO_RAND_PART_B_STATE
NO_RAND_PART_C_STATEback to summary
private static final int NO_RAND_PART_C_STATE
origPtrback to summary
private int origPtr
permback to summary
private int[][] perm
RAND_PART_B_STATEback to summary
private static final int RAND_PART_B_STATE
RAND_PART_C_STATEback to summary
private static final int RAND_PART_C_STATE
rNToGoback to summary
pack-priv int rNToGo
rTPosback to summary
pack-priv int rTPos
selectorsback to summary
private byte[] selectors
seqToUnseqback to summary
private byte[] seqToUnseq
streamCRCback to summary
private int streamCRC
streamEndback to summary
private boolean streamEnd
tPosback to summary
pack-priv int tPos
ttback to summary
private int[] tt
unzftabback to summary
private int[] unzftab
zback to summary
pack-priv int z

Constructor Detail

CBZip2InputStreamback to summary
public CBZip2InputStream(InputStream zStream) throws IOException

Method Detail

beginBlockback to summary
private void beginBlock() throws IOException
bsFinishedWithStreamback to summary
private void bsFinishedWithStream()
bsGetBitback to summary
private int bsGetBit() throws IOException
bsGetBitsback to summary
private int bsGetBits(int n) throws IOException
bsGetBitsSmallback to summary
private int bsGetBitsSmall(int n) throws IOException
bsGetInt32back to summary
private int bsGetInt32() throws IOException
bsGetLong48back to summary
private long bsGetLong48() throws IOException
endBlockback to summary
private void endBlock() throws IOException
getAndMoveToFrontDecodeback to summary
private void getAndMoveToFrontDecode() throws IOException
hbCreateDecodeTablesback to summary
private void hbCreateDecodeTables(int[] limit, int[] base, int[] perm, byte[] length, int minLen, int maxLen, int alphaSize)
readback to summary
public int read() throws IOException

Implements abstract java.io.InputStream.read.

Doc from java.io.InputStream.read.

Reads the next byte of data from the input stream. The value byte is returned as an int in the range 0 to 255. If no byte is available because the end of the stream has been reached, the value -1 is returned. This method blocks until input data is available, the end of the stream is detected, or an exception is thrown.

Returns:int

the next byte of data, or -1 if the end of the stream is reached.

Exceptions
IOException:
if an I/O error occurs.
recvDecodingTablesback to summary
private int recvDecodingTables() throws IOException
requireByteback to summary
private int requireByte() throws IOException
setupNoRandPartAback to summary
private void setupNoRandPartA() throws IOException
setupNoRandPartBback to summary
private void setupNoRandPartB() throws IOException
setupNoRandPartCback to summary
private void setupNoRandPartC() throws IOException
setupRandPartAback to summary
private void setupRandPartA() throws IOException
setupRandPartBback to summary
private void setupRandPartB() throws IOException
setupRandPartCback to summary
private void setupRandPartC() throws IOException