org.apache.commons.compress.compressors.bzip2
Class BZip2OutputStream
java.lang.Object
java.io.OutputStream
org.apache.commons.compress.compressors.bzip2.BZip2OutputStream
- All Implemented Interfaces:
- java.io.Closeable, java.io.Flushable, BZip2Constants
public class BZip2OutputStream
- extends java.io.OutputStream
- implements BZip2Constants
An output stream that compresses into the BZip2 format (without the file
header chars) into another stream. TODO: Update to BZip2 1.0.1
- Author:
- Keiron Liddle
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 |
Method Summary |
private void |
allocateCompressStructures()
|
private void |
bsFinishedWithStream()
|
private void |
bsPutint(int u)
|
private void |
bsPutIntVS(int numBits,
int c)
|
private void |
bsPutUChar(int c)
|
private void |
bsSetStream(java.io.OutputStream f)
|
private void |
bsW(int n,
int v)
|
private static int |
calculateWeight(int v1,
int v2)
|
void |
close()
|
private void |
doReversibleTransformation()
|
private void |
endBlock()
|
private void |
endCompression()
|
void |
finalize()
|
void |
flush()
|
private boolean |
fullGtU(int i1,
int i2)
|
private void |
generateMTFValues()
|
private void |
hbAssignCodes(int[] code,
char[] length,
int minLen,
int maxLen,
int alphaSize)
|
private static void |
hbMakeCodeLengths(char[] len,
int[] freq,
int alphaSize,
int maxLen)
|
private void |
initBlock()
|
private void |
initialize()
|
private void |
mainSort()
|
private void |
makeMaps()
|
private char |
med3(char a,
char b,
char c)
|
private void |
moveToFrontCodeAndSend()
|
private static void |
panic()
|
private void |
qSort3(int loSt,
int hiSt,
int dSt)
|
private void |
randomiseBlock()
|
private void |
sendMTFValues()
|
private void |
simpleSort(int lo,
int hi,
int d)
|
private void |
vswap(int p1,
int p2,
int n)
|
void |
write(int bv)
modified by Oliver Merkel, 010128 |
private void |
writeRun()
|
Methods inherited from class java.io.OutputStream |
write, write |
Methods inherited from class java.lang.Object |
clone, equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
LOWER_BYTE_MASK
private static final int LOWER_BYTE_MASK
- See Also:
- Constant Field Values
UPPER_BYTE_MASK
private static final int UPPER_BYTE_MASK
- See Also:
- Constant Field Values
SETMASK
private static final int SETMASK
- See Also:
- Constant Field Values
CLEARMASK
private static final int CLEARMASK
- See Also:
- Constant Field Values
GREATER_ICOST
private static final int GREATER_ICOST
- See Also:
- Constant Field Values
LESSER_ICOST
private static final int LESSER_ICOST
- See Also:
- Constant Field Values
SMALL_THRESH
private static final int SMALL_THRESH
- See Also:
- Constant Field Values
DEPTH_THRESH
private static final int DEPTH_THRESH
- See Also:
- Constant Field Values
QSORT_STACK_SIZE
private static final int QSORT_STACK_SIZE
- 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_mtfFreq
private int[] m_mtfFreq
m_currentChar
private int m_currentChar
m_runLength
private int m_runLength
m_closed
private boolean m_closed
m_incs
private int[] m_incs
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_last
private int m_last
m_origPtr
private int m_origPtr
m_allowableBlockSize
private int m_allowableBlockSize
m_block
private char[] m_block
m_blockCRC
private int m_blockCRC
m_combinedCRC
private int m_combinedCRC
m_bsStream
private java.io.OutputStream m_bsStream
m_firstAttempt
private boolean m_firstAttempt
m_ftab
private int[] m_ftab
m_nInUse
private int m_nInUse
m_nMTF
private int m_nMTF
m_quadrant
private int[] m_quadrant
m_szptr
private short[] m_szptr
m_workDone
private int m_workDone
m_workFactor
private int m_workFactor
m_workLimit
private int m_workLimit
m_zptr
private int[] m_zptr
BZip2OutputStream
public BZip2OutputStream(java.io.OutputStream output)
throws java.io.IOException
- Throws:
java.io.IOException
BZip2OutputStream
public BZip2OutputStream(java.io.OutputStream output,
int blockSize)
throws java.io.IOException
- Throws:
java.io.IOException
hbMakeCodeLengths
private static void hbMakeCodeLengths(char[] len,
int[] freq,
int alphaSize,
int maxLen)
calculateWeight
private static int calculateWeight(int v1,
int v2)
panic
private static void panic()
close
public void close()
throws java.io.IOException
- Specified by:
close
in interface java.io.Closeable
- Overrides:
close
in class java.io.OutputStream
- Throws:
java.io.IOException
finalize
public void finalize()
throws java.lang.Throwable
- Overrides:
finalize
in class java.lang.Object
- Throws:
java.lang.Throwable
flush
public void flush()
throws java.io.IOException
- Specified by:
flush
in interface java.io.Flushable
- Overrides:
flush
in class java.io.OutputStream
- Throws:
java.io.IOException
write
public void write(int bv)
throws java.io.IOException
- modified by Oliver Merkel, 010128
- Specified by:
write
in class java.io.OutputStream
- Parameters:
bv
- Description of Parameter
- Throws:
java.io.IOException
- Description of Exception
allocateCompressStructures
private void allocateCompressStructures()
bsFinishedWithStream
private void bsFinishedWithStream()
throws java.io.IOException
- Throws:
java.io.IOException
bsPutIntVS
private void bsPutIntVS(int numBits,
int c)
throws java.io.IOException
- Throws:
java.io.IOException
bsPutUChar
private void bsPutUChar(int c)
throws java.io.IOException
- Throws:
java.io.IOException
bsPutint
private void bsPutint(int u)
throws java.io.IOException
- Throws:
java.io.IOException
bsSetStream
private void bsSetStream(java.io.OutputStream f)
bsW
private void bsW(int n,
int v)
throws java.io.IOException
- Throws:
java.io.IOException
doReversibleTransformation
private void doReversibleTransformation()
endBlock
private void endBlock()
throws java.io.IOException
- Throws:
java.io.IOException
endCompression
private void endCompression()
throws java.io.IOException
- Throws:
java.io.IOException
fullGtU
private boolean fullGtU(int i1,
int i2)
generateMTFValues
private void generateMTFValues()
hbAssignCodes
private void hbAssignCodes(int[] code,
char[] length,
int minLen,
int maxLen,
int alphaSize)
initBlock
private void initBlock()
initialize
private void initialize()
throws java.io.IOException
- Throws:
java.io.IOException
mainSort
private void mainSort()
makeMaps
private void makeMaps()
med3
private char med3(char a,
char b,
char c)
moveToFrontCodeAndSend
private void moveToFrontCodeAndSend()
throws java.io.IOException
- Throws:
java.io.IOException
qSort3
private void qSort3(int loSt,
int hiSt,
int dSt)
randomiseBlock
private void randomiseBlock()
sendMTFValues
private void sendMTFValues()
throws java.io.IOException
- Throws:
java.io.IOException
simpleSort
private void simpleSort(int lo,
int hi,
int d)
vswap
private void vswap(int p1,
int p2,
int n)
writeRun
private void writeRun()
throws java.io.IOException
- Throws:
java.io.IOException