Top Description Fields Constructors Methods
org.apache.commons.compress.archivers.zip

pack-priv final Class UnshrinkingInputStream

extends LZWInputStream
Class Inheritance
Imports
java.io.IOException, .InputStream, java.nio.ByteOrder, org.apache.commons.compress.compressors.lzw.LZWInputStream
Input stream that decompresses ZIP method 1 (unshrinking). A variation of the LZW algorithm, with some twists.
Since
1.7

Field Summary

Modifier and TypeField and Description
private final boolean[]
isUsed

private static final int
MAX_CODE_SIZE

private static final int
MAX_TABLE_SIZE

Inherited from org.apache.commons.compress.compressors.lzw.LZWInputStream:
DEFAULT_CODE_SIZEinUNUSED_PREFIX

Constructor Summary

AccessConstructor and Description
pack-priv
UnshrinkingInputStream(final InputStream inputStream)

IOException is not actually thrown!

Method Summary

Modifier and TypeMethod and Description
protected int
addEntry(final int
the previous code
previousCode, final byte
the next character to append
character)

Implements abstract org.apache.commons.compress.compressors.lzw.LZWInputStream.addEntry.

Add a new entry to the dictionary.
protected int
decompressNextSymbol()

Implements abstract org.apache.commons.compress.compressors.lzw.LZWInputStream.decompressNextSymbol.

Read the next code and expand it.
private void
partialClear()

Inherited from org.apache.commons.compress.compressors.lzw.LZWInputStream:
addEntryaddRepeatOfPreviousCodecloseexpandCodeToOutputStackgetClearCodegetCodeSizegetCompressedCountgetPrefixgetPrefixesLengthgetTableSizeincrementCodeSizeinitializeTablesinitializeTablesreadreadreadNextCoderesetCodeSizeresetPreviousCodesetClearCodesetCodeSizesetPrefixsetTableSize

Field Detail

isUsedback to summary
private final boolean[] isUsed
MAX_CODE_SIZEback to summary
private static final int MAX_CODE_SIZE
MAX_TABLE_SIZEback to summary
private static final int MAX_TABLE_SIZE

Constructor Detail

UnshrinkingInputStreamback to summary
pack-priv UnshrinkingInputStream(final InputStream inputStream)

IOException is not actually thrown!

Method Detail

addEntryback to summary
protected int addEntry(final int previousCode, final byte character) throws IOException

Implements abstract org.apache.commons.compress.compressors.lzw.LZWInputStream.addEntry.

Doc from org.apache.commons.compress.compressors.lzw.LZWInputStream.addEntry.

Add a new entry to the dictionary.

Parameters
previousCode:int

the previous code

character:byte

the next character to append

Returns:int

the new code

Annotations
@Override
Exceptions
IOException:
on error
decompressNextSymbolback to summary
protected int decompressNextSymbol() throws IOException

Implements abstract org.apache.commons.compress.compressors.lzw.LZWInputStream.decompressNextSymbol.

Doc from org.apache.commons.compress.compressors.lzw.LZWInputStream.decompressNextSymbol.

Read the next code and expand it.

Returns:int

the expanded next code, negative on EOF

Annotations
@Override
Exceptions
IOException:
on error
partialClearback to summary
private void partialClear()