org.verapdf.pd.font.type1

Class EexecFilterDecode

java.lang.Object

java.io.InputStream

org.verapdf.as.io.ASInputStream

org.verapdf.as.filters.ASInFilter

org.verapdf.as.filters.io.ASBufferedInFilter

org.verapdf.pd.font.type1.EexecFilterDecode

All Implemented Interfaces:

Closeable, AutoCloseable

public class EexecFilterDecode
extends ASBufferedInFilter

This is filter that decodes eexec coding in type 1 font files.

Author:

Sergey Shemyakov

Field Summary

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

BF_BUFFER_SIZE, buffer

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

nPos, resourceUsers

Constructor Summary

Constructors

Constructor and Description
EexecFilterDecode(ASInputStream stream, boolean isCharstring) Constructor from stream.
EexecFilterDecode(ASInputStream stream, boolean isCharstring, int lenIV) Constructor from stream.

Method Summary

Modifier and Type	Method and Description
int	read(byte[] buffer, int size) Decodes eexec encoded data and reads up to size encoded bytes into buffer.

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

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

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

close, getInputStream, incrementResourceUsers, read, setInputStream

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

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

EexecFilterDecode

public EexecFilterDecode(ASInputStream stream,
                         boolean isCharstring,
                         int lenIV)
                  throws IOException

Constructor from stream.

Parameters:

stream - is eexec-encoded stream.

isCharstring - is true if passed stream is encoded charstring.

lenIV - is number of random bytes added to encoded data, value of LenIV in Private dictionary.

Throws:

IOException

EexecFilterDecode

public EexecFilterDecode(ASInputStream stream,
                         boolean isCharstring)
                  throws IOException

Constructor from stream.

Parameters:

stream - is eexec-encoded stream.

isCharstring - is true if passed stream is encoded charstring.

Throws:

IOException

Method Detail

read

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

Decodes eexec encoded data and reads up to size encoded bytes into buffer.

Overrides:

read in class ASBufferedInFilter

Parameters:

buffer - is array into which data will be decoded.

size - is maximal length of decoded data.

Returns:

amount of actually read bytes.

Throws:

IOException