de.intarsys.pdf.filter
Class ASCII85InputStream

java.lang.Object
  java.io.InputStream
      java.io.FilterInputStream
          de.intarsys.pdf.filter.ASCII85InputStream

All Implemented Interfaces:

Closeable

public class ASCII85InputStream
extends FilterInputStream

Input stream to decode binary data encoded in ASCII representable byte codes. The algorithm maps four bytes of data to five ASCII printing characters (and vice versa).

The exact specification can be found in [PDF] chapter 3.3.2.

Constructor Summary

ASCII85InputStream(InputStream is)
Constructor

Method Summary

int	available()
void	close()
boolean	markSupported()
int	read()
int	read(byte[] data, int offset, int len)
void	reset()
long	skip(long bytes)

Methods inherited from class java.io.FilterInputStream

mark, read

Methods inherited from class java.lang.Object

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

Constructor Detail

ASCII85InputStream

public ASCII85InputStream(InputStream is)

Constructor

Parameters:

is - The input stream to actually read from.

Method Detail

read

public final int read()
               throws IOException

Overrides:

read in class FilterInputStream

Throws:

IOException

read

public final int read(byte[] data,
                      int offset,
                      int len)
               throws IOException

Overrides:

read in class FilterInputStream

Throws:

IOException

available

public int available()
              throws IOException

Overrides:

available in class FilterInputStream

Throws:

IOException

close

public void close()
           throws IOException

Specified by:

close in interface Closeable

Overrides:

close in class FilterInputStream

Throws:

IOException

markSupported

public boolean markSupported()

Overrides:

markSupported in class FilterInputStream

reset

public void reset()
           throws IOException

Overrides:

reset in class FilterInputStream

Throws:

IOException

skip

public long skip(long bytes)
          throws IOException

Overrides:

skip in class FilterInputStream

Throws:

IOException