public class Base64 extends Object
This code is a stripped down version of Robert Harder's Public Domain Base64 implementation. GZIP support, InputStream and OutputStream stuff and some unneeded encode/decode methods have been removed.
-- Original comments follow --
Encodes and decodes to and from Base64 notation.
Change Log:
int
s
that you "OR" together).decode( String s, boolean gzipCompressed )
. Added the ability to "suspend" encoding in
the Output Stream so you can turn on and off the encoding if you need to embed base64 data in an
otherwise "normal" stream (like an XML file).I am placing this code in the Public Domain. Do with it as you will. This software comes with no guarantees or warranties but with plenty of well-wishing instead! Please visit http://iharder.net/base64 periodically to check for updates or to contribute improvements.
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 |
NO_OPTIONS
No options specified.
|
Modifier and Type | Method and Description |
---|---|
static byte[] |
decode(byte[] source,
int off,
int len)
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 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.
|
public static final int NO_OPTIONS
public static final int ENCODE
public static final int DECODE
public static final int DONT_BREAK_LINES
public static String encodeBytes(byte[] source)
source
- The data to convertpublic 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 )
source
- The data to convertoptions
- Specified optionsDONT_BREAK_LINES
public static String encodeBytes(byte[] source, int off, int len)
source
- The data to convertoff
- Offset in array where conversion should beginlen
- Length of data to convertpublic 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 )
source
- The data to convertoff
- Offset in array where conversion should beginlen
- Length of data to convertoptions
- Specified optionsDONT_BREAK_LINES
public static byte[] decode(byte[] source, int off, int len)
source
- The Base64 encoded dataoff
- The offset of where to begin decodinglen
- The length of characters to decodepublic static byte[] decode(String s)
s
- the string to decodeCopyright © 1997-2020 PostgreSQL Global Development Group. All Rights Reserved.