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## org.ajax4jsf.util.base64
Class URLCodec

    java.lang.Object
      org.ajax4jsf.util.base64.URLCodec

All Implemented Interfaces:
  BinaryDecoder, BinaryEncoder, Decoder, Encoder

    public class URLCodec

extends Object
implements BinaryEncoder, BinaryDecoder

Implements the 'www-form-urlencoded' encoding scheme,

also misleadingly known as URL encoding.

For more detailed information please refer to

Chapter 17.13.4 'Form content types' of the

HTML 4.01 Specification

This codec is meant to be a replacement for standard Java classes

`URLEncoder` and `URLDecoder`

on older Java platforms, as these classes in Java versions below

1.4 rely on the platform's default charset encoding.

Since:
  1.2
Version:
  $Id: URLCodec.java,v 1.1.2.1 2007/01/09 18:59:14 alexsmirnov Exp $
Author:
  Apache Software Foundation

Field Summary
`protected static byte` | `ESCAPE_CHAR`
`protected static BitSet` | `WWW_FORM_URL` BitSet of www-form-url safe characters.

Constructor Summary
`URLCodec()` Default constructor.

Method Summary
`byte[]` | `decode(byte[] bytes)` Decodes an array of URL safe 7-bit characters into an array of original bytes.
`Object` | `decode(Object pObject)` Decodes a URL safe object into its original form.
`static byte[]` | `decodeUrl(byte[] bytes)` Decodes an array of URL safe 7-bit characters into an array of original bytes.
`byte[]` | `encode(byte[] bytes)` Encodes an array of bytes into an array of URL safe 7-bit characters.
`Object` | `encode(Object pObject)` Encodes an object into its URL safe form.
`static byte[]` | `encodeUrl(BitSet urlsafe, byte[] bytes)` Encodes an array of bytes into an array of URL safe 7-bit characters.
`static byte[]` | `encodeUrl(byte[] bytes)`

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

Field Detail

### ESCAPE_CHAR

    protected static final byte ESCAPE_CHAR

See Also:
  Constant Field Values

### WWW_FORM_URL

    protected static final BitSet WWW_FORM_URL

  BitSet of www-form-url safe characters.

Constructor Detail

### URLCodec

    public URLCodec()

  Default constructor.

Method Detail

### encodeUrl

    public static final byte[] encodeUrl(byte[] bytes)

### encodeUrl

    public static final byte[] encodeUrl(BitSet urlsafe,
                                         byte[] bytes)

  Encodes an array of bytes into an array of URL safe 7-bit

  characters. Unsafe characters are escaped.

  Parameters:
    `urlsafe` - bitset of characters deemed URL safe
    `bytes` - array of bytes to convert to URL safe characters
  Returns:
    array of bytes containing URL safe characters

### decodeUrl

    public static final byte[] decodeUrl(byte[] bytes)
                                  throws DecoderException

  Decodes an array of URL safe 7-bit characters into an array of

  original bytes. Escaped characters are converted back to their

  original representation.

  Parameters:
    `bytes` - array of URL safe characters
  Returns:
    array of original bytes
  Throws:
    `DecoderException` - Thrown if URL decoding is unsuccessful

### encode

    public byte[] encode(byte[] bytes)

  Encodes an array of bytes into an array of URL safe 7-bit

  characters. Unsafe characters are escaped.

  Specified by:
    `encode` in interface `BinaryEncoder`
  Parameters:
    `bytes` - array of bytes to convert to URL safe characters
  Returns:
    array of bytes containing URL safe characters

### decode

    public byte[] decode(byte[] bytes)
                  throws DecoderException

  Decodes an array of URL safe 7-bit characters into an array of

  original bytes. Escaped characters are converted back to their

  original representation.

  Specified by:
    `decode` in interface `BinaryDecoder`
  Parameters:
    `bytes` - array of URL safe characters
  Returns:
    array of original bytes
  Throws:
    `DecoderException` - Thrown if URL decoding is unsuccessful

### encode

    public Object encode(Object pObject)
                  throws EncoderException

  Encodes an object into its URL safe form. Unsafe characters are

  escaped.

  Specified by:
    `encode` in interface `Encoder`
  Parameters:
    `pObject` - string to convert to a URL safe form
  Returns:
    URL safe object
  Throws:
    `EncoderException` - Thrown if URL encoding is not

    applicable to objects of this type or

    if encoding is unsuccessful

### decode

    public Object decode(Object pObject)
                  throws DecoderException

  Decodes a URL safe object into its original form. Escaped

  characters are converted back to their original representation.

  Specified by:
    `decode` in interface `Decoder`
  Parameters:
    `pObject` - URL safe object to convert into its original form
  Returns:
    original object
  Throws:
    `DecoderException` - Thrown if URL decoding is not

    applicable to objects of this type

    if decoding is unsuccessful

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