Base64 (universAAL Super POM 3.3.0 API)

java.lang.Object
- org.universAAL.ri.servicegateway.impl.Base64

```
public class Base64
extends Object
```

Nested Class Summary

Nested Classes
Modifier and Type	Class and Description
`static class`	`Base64.InputStream` A `Base64.InputStream` will read data from another `java.io.InputStream`, given in the constructor, and encode/decode to/from Base64 notation on the fly.
`static class`	`Base64.OutputStream` A `Base64.OutputStream` will write data to another `java.io.OutputStream`, given in the constructor, and encode/decode to/from Base64 notation on the fly.

Field Summary

Fields
Modifier and Type	Field and Description
`static int`	`DECODE` Specify decoding.
`static int`	`DONT_BREAK_LINES` Don't break lines when encoding (violates strict Base64 specification)
`static int`	`ENCODE` Specify encoding.
`static int`	`GZIP` Specify that data should be gzip-compressed.
`static int`	`NO_OPTIONS` No options specified.
`static int`	`ORDERED` Encode using the special "ordered" dialect of Base64 described here: http://www.faqs.org/qa/rfcc- 1940.html.
`static int`	`URL_SAFE` Encode using Base64-like encoding that is URL- and Filename-safe as described in Section 4 of RFC3548: http://www.faqs.org/rfcs/rfc3548.html.

Method Summary

Methods
Modifier and Type	Method and Description
`static byte[]`	`decode(byte[] source, int off, int len, int options)` Very low-level access to decoding ASCII characters in the form of a byte array.
`static byte[]`	`decode(String s)` Decodes data from Base64 notation, automatically detecting gzip-compressed data and decompressing it.
`static byte[]`	`decode(String s, int options)` Decodes data from Base64 notation, automatically detecting gzip-compressed data and decompressing it.
`static boolean`	`decodeFileToFile(String infile, String outfile)` Reads `infile` and decodes it to `outfile`.
`static byte[]`	`decodeFromFile(String filename)` Convenience method for reading a base64-encoded file and decoding it.
`static boolean`	`decodeToFile(String dataToDecode, String filename)` Convenience method for decoding data to a file.
`static Object`	`decodeToObject(String encodedObject)` Attempts to decode Base64 data and deserialize a Java Object within.
`static String`	`encodeBytes(byte[] source)` Encodes a byte array into Base64 notation.
`static String`	`encodeBytes(byte[] source, int options)` Encodes a byte array into Base64 notation.
`static String`	`encodeBytes(byte[] source, int off, int len)` Encodes a byte array into Base64 notation.
`static String`	`encodeBytes(byte[] source, int off, int len, int options)` Encodes a byte array into Base64 notation.
`static boolean`	`encodeFileToFile(String infile, String outfile)` Reads `infile` and encodes it to `outfile`.
`static String`	`encodeFromFile(String filename)` Convenience method for reading a binary file and base64-encoding it.
`static String`	`encodeObject(Serializable serializableObject)` Serializes an object and returns the Base64-encoded version of that serialized object.
`static String`	`encodeObject(Serializable serializableObject, int options)` Serializes an object and returns the Base64-encoded version of that serialized object.
`static boolean`	`encodeToFile(byte[] dataToEncode, String filename)` Convenience method for encoding data to a file.

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

- Field Detail
  - NO_OPTIONS
```
public static final int NO_OPTIONS
```
    No options specified. Value is zero.
    
    See Also:
    Constant Field Values
  - ENCODE
```
public static final int ENCODE
```
    Specify encoding.
    
    See Also:
    Constant Field Values
  - DECODE
```
public static final int DECODE
```
    Specify decoding.
    
    See Also:
    Constant Field Values
  - GZIP
```
public static final int GZIP
```
    Specify that data should be gzip-compressed.
    
    See Also:
    Constant Field Values
  - DONT_BREAK_LINES
```
public static final int DONT_BREAK_LINES
```
    Don't break lines when encoding (violates strict Base64 specification)
    
    See Also:
    Constant Field Values
  - URL_SAFE
```
public static final int URL_SAFE
```
    Encode using Base64-like encoding that is URL- and Filename-safe as described in Section 4 of RFC3548: http://www.faqs.org/rfcs/rfc3548.html. It is important to note that data encoded this way is not officially valid Base64, or at the very least should not be called Base64 without also specifying that is was encoded using the URL- and Filename-safe dialect.
    
    See Also:
    Constant Field Values
  - ORDERED
```
public static final int ORDERED
```
    Encode using the special "ordered" dialect of Base64 described here: http://www.faqs.org/qa/rfcc- 1940.html.
    
    See Also:
    Constant Field Values
- Method Detail
  - encodeObject
```
public static String encodeObject(Serializable serializableObject)
```
    Serializes an object and returns the Base64-encoded version of that serialized object. If the object cannot be serialized or there is another error, the method will return null. The object is not GZip-compressed before being encoded.
    
    Parameters:
    serializableObject - The object to encode
    
    Returns:
    The Base64-encoded object
    Since:
    
    1.4
  - encodeObject
```
public static String encodeObject(Serializable serializableObject,
                  int options)
```
    Serializes an object and returns the Base64-encoded version of that serialized object. If the object cannot be serialized or there is another error, the method will return null.
    Valid options:
```
   GZIP: gzip-compresses object before encoding it.
   DONT_BREAK_LINES: don't break lines at 76 characters
     Note: Technically, this makes your encoding non-compliant.
 
```
    Example: encodeObject( myObj, Base64.GZIP ) or
    Example: encodeObject( myObj, Base64.GZIP | Base64.DONT_BREAK_LINES )
    Parameters:
    serializableObject - The object to encode
    options - Specified options
    
    Returns:
    The Base64-encoded object
    Since:
    
    2.0
    
    See Also:
    GZIP, DONT_BREAK_LINES
  - encodeBytes
```
public static String encodeBytes(byte[] source)
```
    Encodes a byte array into Base64 notation. Does not GZip-compress data.
    
    Parameters:
    source - The data to convert
    Since:
    
    1.4
  - encodeBytes
```
public static String encodeBytes(byte[] source,
                 int options)
```
    Encodes a byte array into Base64 notation.
    Valid options:
```
   GZIP: gzip-compresses object before encoding it.
   DONT_BREAK_LINES: don't break lines at 76 characters
     Note: Technically, this makes your encoding non-compliant.
 
```
    Example: encodeBytes( myData, Base64.GZIP ) or
    Example: encodeBytes( myData, Base64.GZIP | Base64.DONT_BREAK_LINES )
    Parameters:
    source - The data to convert
    options - Specified options
    Since:
    
    2.0
    
    See Also:
    GZIP, DONT_BREAK_LINES
  - encodeBytes
```
public static String encodeBytes(byte[] source,
                 int off,
                 int len)
```
    Encodes a byte array into Base64 notation. Does not GZip-compress data.
    
    Parameters:
    source - The data to convert
    off - Offset in array where conversion should begin
    len - Length of data to convert
    Since:
    
    1.4
  - encodeBytes
```
public static String encodeBytes(byte[] source,
                 int off,
                 int len,
                 int options)
```
    Encodes a byte array into Base64 notation.
    Valid options:
```
   GZIP: gzip-compresses object before encoding it.
   DONT_BREAK_LINES: don't break lines at 76 characters
     Note: Technically, this makes your encoding non-compliant.
 
```
    Example: encodeBytes( myData, Base64.GZIP ) or
    Example: encodeBytes( myData, Base64.GZIP | Base64.DONT_BREAK_LINES )
    Parameters:
    source - The data to convert
    off - Offset in array where conversion should begin
    len - Length of data to convert
    options - Specified options
    options - alphabet type is pulled from this (standard, url-safe, ordered)
    Since:
    
    2.0
    
    See Also:
    GZIP, DONT_BREAK_LINES
  - decode
```
public static byte[] decode(byte[] source,
            int off,
            int len,
            int options)
```
    Very low-level access to decoding ASCII characters in the form of a byte array. Does not support automatically gunzipping or any other "fancy" features.
    
    Parameters:
    source - The Base64 encoded data
    off - The offset of where to begin decoding
    len - The length of characters to decode
    
    Returns:
    decoded data
    Since:
    
    1.3
  - decode
```
public static byte[] decode(String s)
```
    Decodes data from Base64 notation, automatically detecting gzip-compressed data and decompressing it.
    
    Parameters:
    s - the string to decode
    
    Returns:
    the decoded data
    Since:
    
    1.4
  - decode
```
public static byte[] decode(String s,
            int options)
```
    Decodes data from Base64 notation, automatically detecting gzip-compressed data and decompressing it.
    
    Parameters:
    s - the string to decode
    options - encode options such as URL_SAFE
    
    Returns:
    the decoded data
    Since:
    
    1.4
  - decodeToObject
```
public static Object decodeToObject(String encodedObject)
```
    Attempts to decode Base64 data and deserialize a Java Object within. Returns null if there was an error.
    
    Parameters:
    encodedObject - The Base64 data to decode
    
    Returns:
    The decoded and deserialized object
    Since:
    
    1.5
  - encodeToFile
```
public static boolean encodeToFile(byte[] dataToEncode,
                   String filename)
```
    Convenience method for encoding data to a file.
    
    Parameters:
    dataToEncode - byte array of data to encode in base64 form
    filename - Filename for saving encoded data
    
    Returns:
    true if successful, false otherwise
    Since:
    
    2.1
  - decodeToFile
```
public static boolean decodeToFile(String dataToDecode,
                   String filename)
```
    Convenience method for decoding data to a file.
    
    Parameters:
    dataToDecode - Base64-encoded data as a string
    filename - Filename for saving decoded data
    
    Returns:
    true if successful, false otherwise
    Since:
    
    2.1
  - decodeFromFile
```
public static byte[] decodeFromFile(String filename)
```
    Convenience method for reading a base64-encoded file and decoding it.
    
    Parameters:
    filename - Filename for reading encoded data
    
    Returns:
    decoded byte array or null if unsuccessful
    Since:
    
    2.1
  - encodeFromFile
```
public static String encodeFromFile(String filename)
```
    Convenience method for reading a binary file and base64-encoding it.
    
    Parameters:
    filename - Filename for reading binary data
    
    Returns:
    base64-encoded string or null if unsuccessful
    Since:
    
    2.1
  - encodeFileToFile
```
public static boolean encodeFileToFile(String infile,
                       String outfile)
```
    Reads infile and encodes it to outfile.
    
    Parameters:
    infile - Input file
    outfile - Output file
    
    Returns:
    true if the operation is successful
    Since:
    
    2.2
  - decodeFileToFile
```
public static boolean decodeFileToFile(String infile,
                       String outfile)
```
    Reads infile and decodes it to outfile.
    
    Parameters:
    infile - Input file
    outfile - Output file
    
    Returns:
    true if the operation is successful
    Since:
    
    2.2

Class Base64

Nested Class Summary

Field Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

NO_OPTIONS

ENCODE

DECODE

GZIP

DONT_BREAK_LINES

URL_SAFE

ORDERED

Method Detail

encodeObject

encodeObject

encodeBytes

encodeBytes

encodeBytes

encodeBytes

decode

decode

decode

decodeToObject

encodeToFile

decodeToFile

decodeFromFile

encodeFromFile

encodeFileToFile

decodeFileToFile