org.apache.river.jeri.internal.runtime

Class HexDumpEncoder

java.lang.Object

org.apache.river.jeri.internal.runtime.CharacterEncoder

org.apache.river.jeri.internal.runtime.HexDumpEncoder

public class HexDumpEncoder
extends CharacterEncoder

This class encodes a buffer into the classic: "Hexadecimal Dump" format of the past. It is useful for analyzing the contents of binary buffers. The format produced is as follows:

 xxxx: 00 11 22 33 44 55 66 77   88 99 aa bb cc dd ee ff ................
 

Where xxxx is the offset into the buffer in 16 byte chunks, followed by ascii coded hexadecimal bytes followed by the ASCII representation of the bytes or '.' if they are not valid bytes.

Author:

Sun Microsystems, Inc.

Field Summary

Fields

Modifier and Type	Field and Description
private int	currentByte
private int	offset
private byte[]	thisLine
private int	thisLineLength

Fields inherited from class org.apache.river.jeri.internal.runtime.CharacterEncoder

pStream

Constructor Summary

Constructors

Constructor and Description
HexDumpEncoder()

Method Summary

Modifier and Type	Method and Description
protected int	bytesPerAtom() Return the number of bytes per atom of encoding
protected int	bytesPerLine() Return the number of bytes that can be encoded per line
protected void	encodeAtom(OutputStream o, byte[] buf, int off, int len) Encode one "atom" of information into characters.
protected void	encodeBufferPrefix(OutputStream o) Encode the prefix for the entire buffer.
protected void	encodeLinePrefix(OutputStream o, int len) Encode the prefix that starts every output line.
protected void	encodeLineSuffix(OutputStream o) Encode the suffix that ends every output line.
(package private) static void	hexDigit(PrintStream p, byte x)

Methods inherited from class org.apache.river.jeri.internal.runtime.CharacterEncoder

encode, encode, encode, encodeBuffer, encodeBuffer, encodeBuffer, encodeBufferSuffix, readFully

Methods inherited from class java.lang.Object

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

Field Detail

offset

private int offset

thisLineLength

private int thisLineLength

currentByte

private int currentByte

thisLine

private byte[] thisLine

Constructor Detail

HexDumpEncoder

public HexDumpEncoder()

Method Detail

hexDigit

static void hexDigit(PrintStream p,
                     byte x)

bytesPerAtom

protected int bytesPerAtom()

Description copied from class: CharacterEncoder

Return the number of bytes per atom of encoding

Specified by:

bytesPerAtom in class CharacterEncoder

bytesPerLine

protected int bytesPerLine()

Description copied from class: CharacterEncoder

Return the number of bytes that can be encoded per line

Specified by:

bytesPerLine in class CharacterEncoder

encodeBufferPrefix

protected void encodeBufferPrefix(OutputStream o)
                           throws IOException

Description copied from class: CharacterEncoder

Encode the prefix for the entire buffer. By default is simply opens the PrintStream for use by the other functions.

Overrides:

encodeBufferPrefix in class CharacterEncoder

Throws:

IOException

encodeLinePrefix

protected void encodeLinePrefix(OutputStream o,
                                int len)
                         throws IOException

Description copied from class: CharacterEncoder

Encode the prefix that starts every output line.

Overrides:

encodeLinePrefix in class CharacterEncoder

Throws:

IOException

encodeAtom

protected void encodeAtom(OutputStream o,
                          byte[] buf,
                          int off,
                          int len)
                   throws IOException

Description copied from class: CharacterEncoder

Encode one "atom" of information into characters.

Specified by:

encodeAtom in class CharacterEncoder

Throws:

IOException

encodeLineSuffix

protected void encodeLineSuffix(OutputStream o)
                         throws IOException

Description copied from class: CharacterEncoder

Encode the suffix that ends every output line. By default this method just prints a into the output stream.

Overrides:

encodeLineSuffix in class CharacterEncoder

Throws:

IOException