JGit 7.2.0.202503040940-r · org.eclipse.jgit.util.Base64

Modifier and Type	Field and Description
private static final byte[]	DEC Translates a Base64 value to either its 6-bit reconstruction value or a negative number indicating some other meaning.
private static final byte[]	ENC The 64 valid Base64 values.
private static final byte	EQUALS_SIGN The equals sign (=) as a byte.
private static final byte	EQUALS_SIGN_DEC Indicates equals sign in encoding.
private static final byte	INVALID_DEC Indicates an invalid byte during decoding.
private static final byte	WHITE_SPACE_DEC Indicates white space in encoding.

Access	Constructor and Description
private	Base64() Defeats instantiation.

Method Summary

Modifier and Type	Method and Description
public static byte[]	Returns: decoded data decode(byte[] The Base64 encoded data source, int The offset of where to begin decoding off, int The length of characters to decode len) Low-level decoding ASCII characters from a byte array.
public static byte[]	Returns: the decoded data decode(String the string to decode s) Decodes data from Base64 notation.
private static int	Returns: the number of decoded bytes converted decode4to3(byte[] the array to convert source, int the index where conversion begins srcOffset, byte[] the array to hold the conversion destination, int the index where output will be put destOffset) Decodes four bytes from array `source` and writes the resulting bytes (up to three of them) to `destination`.
private static void	encode3to4(byte[] the array to convert source, int the index where conversion begins srcOffset, int the number of significant bytes in your array numSigBytes, byte[] the array to hold the conversion destination, int the index where output will be put destOffset) Encodes up to three bytes of the array `source` and writes the resulting four Base64 bytes to `destination`.
public static String	Returns: encoded base64 representation of source. encodeBytes(byte[] The data to convert source) Encodes a byte array into Base64 notation.
public static String	Returns: encoded base64 representation of source. encodeBytes(byte[] The data to convert source, int Offset in array where conversion should begin off, int Length of data to convert len) Encodes a byte array into Base64 notation.

Inherited from java.lang.Object:: clone equals finalize getClass hashCode notify notifyAll toString wait wait wait

Field Detail

DEC	back to summary
private static final byte[] DEC Translates a Base64 value to either its 6-bit reconstruction value or a negative number indicating some other meaning. The table is only 7 bits wide, as the 8th bit is discarded during decoding.

ENC	back to summary
private static final byte[] ENC The 64 valid Base64 values.

EQUALS_SIGN	back to summary
private static final byte EQUALS_SIGN The equals sign (=) as a byte.

EQUALS_SIGN_DEC	back to summary
private static final byte EQUALS_SIGN_DEC Indicates equals sign in encoding.

INVALID_DEC	back to summary
private static final byte INVALID_DEC Indicates an invalid byte during decoding.

WHITE_SPACE_DEC	back to summary
private static final byte WHITE_SPACE_DEC Indicates white space in encoding.

Constructor Detail

Base64	back to summary
private Base64() Defeats instantiation.

Method Detail

decode	back to summary
public static byte[] decode(byte[] source, int off, int len) Low-level decoding ASCII characters from a byte array. Parameters source:byte[] The Base64 encoded data off:int The offset of where to begin decoding len:int The length of characters to decode Returns:byte[] decoded data Exceptions IllegalArgumentException: the input is not a valid Base64 sequence.

decode

back to summary

public static byte[] decode(byte[] source, int off, int len)

Low-level decoding ASCII characters from a byte array.

Parameters

source:byte[]: The Base64 encoded data
off:int: The offset of where to begin decoding
len:int: The length of characters to decode

Returns:byte[]

decoded data

Exceptions

IllegalArgumentException:: the input is not a valid Base64 sequence.

decode	back to summary
public static byte[] decode(String s) Decodes data from Base64 notation. Parameters s:String the string to decode Returns:byte[] the decoded data

decode

back to summary

public static byte[] decode(String s)

Decodes data from Base64 notation.

Parameters

s:String: the string to decode

Returns:byte[]

the decoded data

decode4to3	back to summary
private static int decode4to3(byte[] source, int srcOffset, byte[] destination, int destOffset) Decodes four bytes from array `source` and writes the resulting bytes (up to three of them) to `destination`. The source and destination arrays can be manipulated anywhere along their length by specifying `srcOffset` and `destOffset`. This method does not check to make sure your arrays are large enough to accommodate `srcOffset` + 4 for the `source` array or `destOffset` + 3 for the `destination` array. This method returns the actual number of bytes that were converted from the Base64 encoding. Parameters source:byte[] the array to convert srcOffset:int the index where conversion begins destination:byte[] the array to hold the conversion destOffset:int the index where output will be put Returns:int the number of decoded bytes converted Annotations @SuppressWarnings:UnnecessaryParentheses

decode4to3

back to summary

private static int decode4to3(byte[] source, int srcOffset, byte[] destination, int destOffset)

Decodes four bytes from array source and writes the resulting bytes (up to three of them) to destination. The source and destination arrays can be manipulated anywhere along their length by specifying srcOffset and destOffset. This method does not check to make sure your arrays are large enough to accommodate srcOffset + 4 for the source array or destOffset + 3 for the destination array. This method returns the actual number of bytes that were converted from the Base64 encoding.

Parameters

source:byte[]: the array to convert
srcOffset:int: the index where conversion begins
destination:byte[]: the array to hold the conversion
destOffset:int: the index where output will be put

Returns:int

the number of decoded bytes converted

Annotations

@SuppressWarnings:UnnecessaryParentheses

encode3to4	back to summary
private static void encode3to4(byte[] source, int srcOffset, int numSigBytes, byte[] destination, int destOffset) Encodes up to three bytes of the array `source` and writes the resulting four Base64 bytes to `destination`. The source and destination arrays can be manipulated anywhere along their length by specifying `srcOffset` and `destOffset`. This method does not check to make sure your arrays are large enough to accommodate `srcOffset` + 3 for the `source` array or `destOffset` + 4 for the `destination` array. The actual number of significant bytes in your array is given by `numSigBytes`. Parameters source:byte[] the array to convert srcOffset:int the index where conversion begins numSigBytes:int the number of significant bytes in your array destination:byte[] the array to hold the conversion destOffset:int the index where output will be put Annotations @SuppressWarnings:UnnecessaryParentheses

encode3to4

back to summary

private static void encode3to4(byte[] source, int srcOffset, int numSigBytes, byte[] destination, int destOffset)

Encodes up to three bytes of the array source and writes the resulting four Base64 bytes to destination. The source and destination arrays can be manipulated anywhere along their length by specifying srcOffset and destOffset. This method does not check to make sure your arrays are large enough to accommodate srcOffset + 3 for the source array or destOffset + 4 for the destination array. The actual number of significant bytes in your array is given by numSigBytes.

Parameters

source:byte[]: the array to convert
srcOffset:int: the index where conversion begins
numSigBytes:int: the number of significant bytes in your array
destination:byte[]: the array to hold the conversion
destOffset:int: the index where output will be put

Annotations

@SuppressWarnings:UnnecessaryParentheses

encodeBytes	back to summary
public static String encodeBytes(byte[] source) Encodes a byte array into Base64 notation. Parameters source:byte[] The data to convert Returns:String encoded base64 representation of source.

encodeBytes

back to summary

public static String encodeBytes(byte[] source)

Encodes a byte array into Base64 notation.

Parameters

source:byte[]: The data to convert

Returns:String

encoded base64 representation of source.

encodeBytes	back to summary
public static String encodeBytes(byte[] source, int off, int len) Encodes a byte array into Base64 notation. Parameters source:byte[] The data to convert off:int Offset in array where conversion should begin len:int Length of data to convert Returns:String encoded base64 representation of source.

encodeBytes

back to summary

public static String encodeBytes(byte[] source, int off, int len)

Encodes a byte array into Base64 notation.

Parameters

source:byte[]: The data to convert
off:int: Offset in array where conversion should begin
len:int: Length of data to convert

Returns:String

encoded base64 representation of source.

public Class Base64

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