Class B64Code
- java.lang.Object
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- io.protostuff.B64Code
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public final class B64Code extends java.lang.Object
Fast B64 Encoder/Decoder as described in RFC 1421.Does not insert or interpret whitespace as described in RFC 1521. If you require this you must pre/post process your data.
Note that in a web context the usual case is to not want linebreaks or other white space in the encoded output.
All methods that begin with 'c' will use char arrays (as output on encode, as input on decode).
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Field Summary
Fields Modifier and Type Field Description (package private) static byte[]
code2nibble
(package private) static byte[]
nibble2code
(package private) static byte
pad
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Constructor Summary
Constructors Modifier Constructor Description private
B64Code()
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Method Summary
All Methods Static Methods Concrete Methods Modifier and Type Method Description static byte[]
cdecode(char[] b)
Fast Base 64 decode as described in RFC 1421.static byte[]
cdecode(char[] input, int inOffset, int inLen)
Fast Base 64 decode as described in RFC 1421.private static void
cdecode(char[] input, int inOffset, int inLen, byte[] output, int outOffset, int outLen)
static char[]
cencode(byte[] input)
Fast Base 64 encode as described in RFC 1421.static char[]
cencode(byte[] input, int inOffset, int inLen)
Fast Base 64 encode as described in RFC 1421.private static void
cencode(byte[] input, int inOffset, int inLen, char[] output, int outOffset)
Fast Base 64 encode as described in RFC 1421.static byte[]
decode(byte[] b)
Fast Base 64 decode as described in RFC 1421.static byte[]
decode(byte[] input, int inOffset, int inLen)
Fast Base 64 decode as described in RFC 1421.private static void
decode(byte[] input, int inOffset, int inLen, byte[] output, int outOffset, int outLen)
static byte[]
decode(java.lang.String str)
Returns the base 64 decoded bytes.static byte[]
decode(java.lang.String str, int inOffset, int inLen)
Returns the base 64 decoded bytes.private static void
decode(java.lang.String str, int inOffset, int inLen, byte[] output, int outOffset, int outLen)
static int
decodeTo(byte[] output, int outOffset, byte[] input, int inOffset, int inLen)
Returns the length of the decoded base64 input (written to the providedoutput
byte array).static int
decodeTo(byte[] output, int outOffset, java.lang.String str, int inOffset, int inLen)
Returns the length of the decoded base64 input (written to the providedoutput
byte array).static byte[]
encode(byte[] input)
Fast Base 64 encode as described in RFC 1421.static byte[]
encode(byte[] input, int inOffset, int inLen)
Fast Base 64 encode as described in RFC 1421.private static void
encode(byte[] input, int inOffset, int inLen, byte[] output, int outOffset)
Fast Base 64 encode as described in RFC 1421.static LinkedBuffer
encode(byte[] input, int inOffset, int inLen, WriteSession session, LinkedBuffer lb)
Encodes the byte array into theLinkedBuffer
and grows when full.static LinkedBuffer
sencode(byte[] input, int inOffset, int inLen, WriteSession session, LinkedBuffer lb)
Encodes the byte array into theLinkedBuffer
and flushes to theOutputStream
when buffer is full.
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Field Detail
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pad
static final byte pad
- See Also:
- Constant Field Values
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nibble2code
static final byte[] nibble2code
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code2nibble
static final byte[] code2nibble
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Method Detail
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encode
public static byte[] encode(byte[] input)
Fast Base 64 encode as described in RFC 1421.
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encode
public static byte[] encode(byte[] input, int inOffset, int inLen)
Fast Base 64 encode as described in RFC 1421.
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cencode
public static char[] cencode(byte[] input)
Fast Base 64 encode as described in RFC 1421.
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cencode
public static char[] cencode(byte[] input, int inOffset, int inLen)
Fast Base 64 encode as described in RFC 1421.
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encode
private static void encode(byte[] input, int inOffset, int inLen, byte[] output, int outOffset)
Fast Base 64 encode as described in RFC 1421.Does not insert whitespace as described in RFC 1521.
Avoids creating extra copies of the input/output.
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cencode
private static void cencode(byte[] input, int inOffset, int inLen, char[] output, int outOffset)
Fast Base 64 encode as described in RFC 1421.Does not insert whitespace as described in RFC 1521.
Avoids creating extra copies of the input/output.
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encode
public static LinkedBuffer encode(byte[] input, int inOffset, int inLen, WriteSession session, LinkedBuffer lb) throws java.io.IOException
Encodes the byte array into theLinkedBuffer
and grows when full.- Throws:
java.io.IOException
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sencode
public static LinkedBuffer sencode(byte[] input, int inOffset, int inLen, WriteSession session, LinkedBuffer lb) throws java.io.IOException
Encodes the byte array into theLinkedBuffer
and flushes to theOutputStream
when buffer is full.- Throws:
java.io.IOException
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decode
public static byte[] decode(byte[] b)
Fast Base 64 decode as described in RFC 1421.
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cdecode
public static byte[] cdecode(char[] b)
Fast Base 64 decode as described in RFC 1421.
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decode
public static byte[] decode(byte[] input, int inOffset, int inLen)
Fast Base 64 decode as described in RFC 1421.Does not attempt to cope with extra whitespace as described in RFC 1521.
Avoids creating extra copies of the input/output.
Note this code has been flattened for performance.
- Parameters:
input
- byte array to decode.inOffset
- the offset.inLen
- the length.- Returns:
- byte array containing the decoded form of the input.
- Throws:
java.lang.IllegalArgumentException
- if the input is not a valid B64 encoding.
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cdecode
public static byte[] cdecode(char[] input, int inOffset, int inLen)
Fast Base 64 decode as described in RFC 1421.Does not attempt to cope with extra whitespace as described in RFC 1521.
Avoids creating extra copies of the input/output.
Note this code has been flattened for performance.
- Parameters:
input
- char array to decode.inOffset
- the offset.inLen
- the length.- Returns:
- byte array containing the decoded form of the input.
- Throws:
java.lang.IllegalArgumentException
- if the input is not a valid B64 encoding.
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decodeTo
public static int decodeTo(byte[] output, int outOffset, byte[] input, int inOffset, int inLen)
Returns the length of the decoded base64 input (written to the providedoutput
byte array). Theoutput
byte array must have enough capacity or it will fail.
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decode
private static void decode(byte[] input, int inOffset, int inLen, byte[] output, int outOffset, int outLen)
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cdecode
private static void cdecode(char[] input, int inOffset, int inLen, byte[] output, int outOffset, int outLen)
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decode
public static byte[] decode(java.lang.String str)
Returns the base 64 decoded bytes. The providedstr
must already be base-64 encoded.
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decode
public static byte[] decode(java.lang.String str, int inOffset, int inLen)
Returns the base 64 decoded bytes. The providedstr
must already be base-64 encoded.
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decodeTo
public static int decodeTo(byte[] output, int outOffset, java.lang.String str, int inOffset, int inLen)
Returns the length of the decoded base64 input (written to the providedoutput
byte array). Theoutput
byte array must have enough capacity or it will fail.
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decode
private static void decode(java.lang.String str, int inOffset, int inLen, byte[] output, int outOffset, int outLen)
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