Class Charsetfunctions

java.lang.Object

org.java_websocket.util.Charsetfunctions

public class Charsetfunctions
extends Object

Field Summary

Fields

Modifier and Type	Field	Description
private static final CodingErrorAction	codingErrorAction
private static final int[]	utf8d	Implementation of the "Flexible and Economical UTF-8 Decoder" algorithm by Björn Höhrmann (http://bjoern.hoehrmann.de/utf-8/decoder/dfa/)

Constructor Summary

Constructors

Modifier	Constructor	Description
private	Charsetfunctions()	Private constructor for real static class

Method Summary

Modifier and Type	Method	Description
static byte[]	asciiBytes(String s)
static boolean	isValidUTF8(ByteBuffer data)	Calling isValidUTF8 with offset 0
static boolean	isValidUTF8(ByteBuffer data, int off)	Check if the provided BytebBuffer contains a valid utf8 encoded string.
static String	stringAscii(byte[] bytes)
static String	stringAscii(byte[] bytes, int offset, int length)
static String	stringUtf8(byte[] bytes)
static String	stringUtf8(ByteBuffer bytes)
static byte[]	utf8Bytes(String s)

Methods inherited from class Object

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

Field Details

codingErrorAction

private static final CodingErrorAction codingErrorAction

utf8d

private static final int[] utf8d

Implementation of the "Flexible and Economical UTF-8 Decoder" algorithm by Björn Höhrmann (http://bjoern.hoehrmann.de/utf-8/decoder/dfa/)

Constructor Details

Charsetfunctions

private Charsetfunctions()

Private constructor for real static class

Method Details

utf8Bytes

public static byte[] utf8Bytes(String s)

asciiBytes

public static byte[] asciiBytes(String s)

stringAscii

public static String stringAscii(byte[] bytes)

stringAscii

public static String stringAscii(byte[] bytes,
 int offset,
 int length)

stringUtf8

public static String stringUtf8(byte[] bytes)
                         throws InvalidDataException

Throws:

InvalidDataException

stringUtf8

public static String stringUtf8(ByteBuffer bytes)
                         throws InvalidDataException

Throws:

InvalidDataException

isValidUTF8

public static boolean isValidUTF8(ByteBuffer data,
 int off)

Check if the provided BytebBuffer contains a valid utf8 encoded string.

Using the algorithm "Flexible and Economical UTF-8 Decoder" by Björn Höhrmann (http://bjoern.hoehrmann.de/utf-8/decoder/dfa/)

Parameters:

data - the ByteBuffer

off - offset (for performance reasons)

Returns:

does the ByteBuffer contain a valid utf8 encoded string

isValidUTF8

public static boolean isValidUTF8(ByteBuffer data)

Calling isValidUTF8 with offset 0

Parameters:

data - the ByteBuffer

Returns:

does the ByteBuffer contain a valid utf8 encoded string