Package org.verapdf.cos.filters

Class COSFilterASCII85Decode

java.lang.Object

java.io.InputStream

org.verapdf.as.io.ASInputStream

org.verapdf.as.filters.ASInFilter

org.verapdf.as.filters.io.ASBufferedInFilter

org.verapdf.cos.filters.COSFilterASCII85Decode

All Implemented Interfaces:

Closeable, AutoCloseable, BaseParserInputStream

public class COSFilterASCII85Decode
extends ASBufferedInFilter

Filter for ASCII 85 data decoding.

Author:

Sergey Shemyakov

Field Summary

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

BF_BUFFER_SIZE, buffer, START_BUFFER_SIZE

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

isClosed, isSourceClosed, resourceUsers

Constructor Summary

Constructors

Constructor	Description
COSFilterASCII85Decode(ASInputStream stream)	Constructor from encoded stream.

Method Summary

Modifier and Type	Method	Description
int	read(byte[] buffer, int size)	Reads up to size bytes of ASCII85 decoded data into buffer.

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

addToBuffer, bufferPop, bufferPopArray, bufferSize, closeResource, concatenate, feedBuffer, getBufferBegin, getBufferCapacity, getBufferEnd, getReadCounter, getStream, getStreamUntilToken, initialize, isEOF, peek, peek, processBuffer, read, readByte, reset, resetReadCounter, skip, unread, unread

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

close, decrementResourceUsers, getInputStream, incrementResourceUsers, read, setInputStream

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

createStreamFromStream

Methods inherited from class java.io.InputStream

available, mark, markSupported, nullInputStream, read, readAllBytes, readNBytes, readNBytes, skip, skipNBytes, transferTo

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.verapdf.parser.BaseParserInputStream

close, read

Constructor Details

COSFilterASCII85Decode

public COSFilterASCII85Decode(ASInputStream stream)
                       throws IOException

Constructor from encoded stream.

Parameters:

stream - is ASCII85 encoded stream.

Throws:

IOException

Method Details

read

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

Reads up to size bytes of ASCII85 decoded data into buffer.

Overrides:

read in class ASBufferedInFilter

Parameters:

buffer - is byte array where decoded data will be read.

size - is maximal amount of decoded bytes. It should be at least 4.

Returns:

amount of actually read bytes.

Throws:

IOException