Package javax.jmdns.impl.util

Class ByteWrangler

java.lang.Object

javax.jmdns.impl.util.ByteWrangler

public class ByteWrangler
extends Object

This class contains all the byte shifting

Author:

Victor Toni

Field Summary

Fields

Modifier and Type	Field	Description
static String	CHARSET_NAME	Name for charset used to convert Strings to/from wire bytes: "UTF-8".
static byte[]	EMPTY_TXT	Representation of empty text.
static int	MAX_DATA_LENGTH	Maximum number of bytes record data can consist of.
static int	MAX_VALUE_LENGTH	Maximum number of bytes a value can consist of.
static byte[]	NO_VALUE	Representation of no value.

Constructor Summary

Constructors

Constructor	Description
ByteWrangler()

Method Summary

Modifier and Type	Method	Description
static byte[]	encodeText(String text)
static void	readProperties(Map<String,byte[]> properties, byte[] textBytes)
static String	readUTF(byte[] data)	Read data bytes as "UTF-8" to String.
static String	readUTF(byte[] data, int off, int len)	Read data bytes as "UTF-8" to String.
static byte[]	textFromProperties(Map<String,?> props)
static void	writeUTF(OutputStream out, String str)	Write a String as "UTF-8" encoded bytes to a stream.

Methods inherited from class java.lang.Object

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

Field Detail

MAX_VALUE_LENGTH

public static final int MAX_VALUE_LENGTH

Maximum number of bytes a value can consist of.

See Also:

Constant Field Values

MAX_DATA_LENGTH

public static final int MAX_DATA_LENGTH

Maximum number of bytes record data can consist of. It is MAX_VALUE_LENGTH + 1 because the first byte contains the number of the following bytes.

See Also:

Constant Field Values

NO_VALUE

public static final byte[] NO_VALUE

Representation of no value. A zero length array of bytes.

EMPTY_TXT

public static final byte[] EMPTY_TXT

Representation of empty text. The first byte denotes the length of the following character bytes (in this case zero.) FIXME: Should this be exported as a method since it could change externally???

CHARSET_NAME

public static final String CHARSET_NAME

Name for charset used to convert Strings to/from wire bytes: "UTF-8".

See Also:

Constant Field Values

Constructor Detail

ByteWrangler

public ByteWrangler()

Method Detail

writeUTF

public static void writeUTF(OutputStream out,
                            String str)
                     throws IOException

Write a String as "UTF-8" encoded bytes to a stream.

Throws:

IOException

readUTF

public static String readUTF(byte[] data)

Read data bytes as "UTF-8" to String.

readUTF

public static String readUTF(byte[] data,
                             int off,
                             int len)

Read data bytes as "UTF-8" to String.

readProperties

public static void readProperties(Map<String,byte[]> properties,
                                  byte[] textBytes)
                           throws Exception

Throws:

Exception

textFromProperties

public static byte[] textFromProperties(Map<String,?> props)

encodeText

public static byte[] encodeText(String text)
                         throws IOException

Throws:

IOException