org.verapdf.cos.filters

Class COSFilterFlateDecode

java.lang.Object

java.io.InputStream

org.verapdf.as.io.ASInputStream

org.verapdf.as.filters.ASInFilter

org.verapdf.as.filters.io.ASBufferingInFilter

org.verapdf.cos.filters.COSFilterFlateDecode

All Implemented Interfaces:

Closeable, AutoCloseable

public class COSFilterFlateDecode
extends ASBufferingInFilter

This class implements Flate decoding.

Author:

Sergey Shemyakov

Field Summary

Fields inherited from class org.verapdf.as.filters.io.ASBufferingInFilter

BF_BUFFER_SIZE, internalBuffer

Fields inherited from class org.verapdf.as.io.ASInputStream

nPos, resourceUsers

Constructor Summary

Constructors

Constructor and Description
COSFilterFlateDecode(ASInputStream stream) Constructor from Flate encoded stream.

Method Summary

Methods

Modifier and Type	Method and Description
int	read(byte[] buffer, int size) Decodes given flate compressed data from stream and reads up to size bytes of decompressed data into given array.
void	reset()
int	skip(int size) Skips given number of decoded bytes in stream.

Methods inherited from class org.verapdf.as.filters.io.ASBufferingInFilter

addToBuffer, bufferPop, bufferPopArray, bufferSize, closeResource, concatenate, decode, feedBuffer, getBufferBegin, getBufferCapacity, getBufferEnd, processBuffer

Methods inherited from class org.verapdf.as.filters.ASInFilter

getInputStream, read, read, setInputStream

Methods inherited from class org.verapdf.as.io.ASInputStream

close, createStreamFromStream

Methods inherited from class java.io.InputStream

available, mark, markSupported, read, skip

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

COSFilterFlateDecode

public COSFilterFlateDecode(ASInputStream stream)
                     throws IOException

Constructor from Flate encoded stream.

Parameters:

stream - is Flate encoded stream.

Throws:

IOException

Method Detail

read

public int read(byte[] buffer,
       int size)
         throws IOException

Decodes given flate compressed data from stream and reads up to size bytes of decompressed data into given array.

Overrides:

read in class ASInFilter

Parameters:

buffer - is array into which data will be decompressed.

size - is maximal amount of decompressed bytes.

Returns:

amount of actually read bytes.

Throws:

IOException

skip

public int skip(int size)
         throws IOException

Skips given number of decoded bytes in stream.

Overrides:

skip in class ASInFilter

Parameters:

size - is amount of bytes to skip.

Returns:

amount of actually skipped bytes.

Throws:

IOException - if stream-reading error occurs.

reset

public void reset()
           throws IOException

Description copied from class: ASBufferingInFilter

Overrides:

reset in class ASBufferingInFilter

Throws:

IOException