org.eigenbase.util
Class RhBase64.InputStream

java.lang.Object
  java.io.InputStream
      java.io.FilterInputStream
          org.eigenbase.util.RhBase64.InputStream

All Implemented Interfaces:

Closeable

Enclosing class:

RhBase64

public static class RhBase64.InputStream
extends FilterInputStream

A RhBase64.InputStream will read data from another java.io.InputStream, given in the constructor, and encode/decode to/from Base64 notation on the fly.

Since:

1.3

See Also:

RhBase64

Field Summary

private boolean	breakLines
private byte[]	buffer
private int	bufferLength
private boolean	encode
private int	lineLength
private int	numSigBytes
private int	position

Fields inherited from class java.io.FilterInputStream

in

Constructor Summary

RhBase64.InputStream(InputStream in)
Constructs a RhBase64.InputStream in DECODE mode.

RhBase64.InputStream(InputStream in, int options)
Constructs a RhBase64.InputStream in either ENCODE or DECODE mode.

Method Summary

int	read() Reads enough of the input stream to convert to/from Base64 and returns the next byte.
int	read(byte[] dest, int off, int len) Calls read() repeatedly until the end of stream is reached or len bytes are read.

Methods inherited from class java.io.FilterInputStream

available, close, mark, markSupported, read, reset, skip

Methods inherited from class java.lang.Object

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

Field Detail

encode

private boolean encode

position

private int position

buffer

private byte[] buffer

bufferLength

private int bufferLength

numSigBytes

private int numSigBytes

lineLength

private int lineLength

breakLines

private boolean breakLines

Constructor Detail

RhBase64.InputStream

public RhBase64.InputStream(InputStream in)

Constructs a RhBase64.InputStream in DECODE mode.

Parameters:

in - the java.io.InputStream from which to read data.

Since:

1.3

RhBase64.InputStream

public RhBase64.InputStream(InputStream in,
                            int options)

Constructs a RhBase64.InputStream in either ENCODE or DECODE mode.

Valid options:

   ENCODE or DECODE: Encode or Decode as data is read.
   DONT_BREAK_LINES: don't break lines at 76 characters
     (only meaningful when encoding)
     Note: Technically, this makes your encoding non-compliant.
 

Example: new RhBase64.InputStream( in, RhBase64.DECODE )

Parameters:

in - the java.io.InputStream from which to read data.

options - Specified options

Since:

2.0

See Also:

RhBase64.ENCODE, RhBase64.DECODE, RhBase64.DONT_BREAK_LINES

Method Detail

read

public int read()
         throws IOException

Reads enough of the input stream to convert to/from Base64 and returns the next byte.

Overrides:

read in class FilterInputStream

Returns:

next byte

Throws:

IOException

Since:

1.3

read

public int read(byte[] dest,
                int off,
                int len)
         throws IOException

Calls read() repeatedly until the end of stream is reached or len bytes are read. Returns number of bytes read into array or -1 if end of stream is encountered.

Overrides:

read in class FilterInputStream

Parameters:

dest - array to hold values

off - offset for array

len - max number of bytes to read into array

Returns:

bytes read into array or -1 if end of stream is encountered.

Throws:

IOException

Since:

1.3