com.google.enterprise.connector.util

Class Base16

java.lang.Object

com.google.enterprise.connector.util.Base16

public class Base16
extends java.lang.Object

Base16 encoder class. Converts strings and byte arrays to hex strings. Base16 is an URL-safe and usually order-preserving encoding, but it does take more space than some other encodings without those properties, such as Base64.

Note: The conversion of Java strings to bytes using UTF-8 is not order-preserving, because the binary order of UTF-16 is different from UTF-8 in the case of supplementary characters.

Since:

3.2.4

See Also:

RFC 4648, UTF8-S

Method Summary

Modifier and Type	Method and Description
java.lang.String	encode(byte[] value) Encodes a byte array into Base16 notation.
void	encode(byte[] value, java.lang.StringBuilder builder) Encodes a byte array into Base16 notation and appends the result to the StringBuilder.
void	encode(byte b, java.lang.StringBuilder builder) Encodes a single byte into Base16 notation and appends the result to the StringBuilder.
java.lang.String	encode(java.lang.String value) Encodes a string into Base16 notation.
static Base16	lowerCase() Constructs a Base16 encoder that uses lowercase hex letters (a-f).
static Base16	upperCase() Constructs a Base16 encoder that uses uppercase hex letters (A-F).

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

lowerCase

public static Base16 lowerCase()

Constructs a Base16 encoder that uses lowercase hex letters (a-f).

upperCase

public static Base16 upperCase()

Constructs a Base16 encoder that uses uppercase hex letters (A-F).

encode

public java.lang.String encode(java.lang.String value)

Encodes a string into Base16 notation. This method does not preserve the sort order of the input strings in the presence of Unicode supplementary characters.

Parameters:

value - the data to convert

Returns:

a string of the equivalent hex representation of the bytes

encode

public java.lang.String encode(byte[] value)

Encodes a byte array into Base16 notation.

Parameters:

value - the data to convert

Returns:

a string of the equivalent hex representation of the bytes

encode

public void encode(byte[] value,
                   java.lang.StringBuilder builder)

Encodes a byte array into Base16 notation and appends the result to the StringBuilder.

Parameters:

value - the data to convert

builder - the StringBuilder to append the encoded string to

encode

public void encode(byte b,
                   java.lang.StringBuilder builder)

Encodes a single byte into Base16 notation and appends the result to the StringBuilder.

Parameters:

b - the byte to convert

builder - the StringBuilder to append the encoded string to