org.apache.jena.atlas.lib

Class Bytes

java.lang.Object

org.apache.jena.atlas.lib.Bytes

public class Bytes
extends Object

Byte-oriented operations. Packing and unpacking integers is in network order (Big endian - which is the preferred order in Java) "http://en.wikipedia.org/wiki/Endianness"

Field Summary

Fields

Modifier and Type	Field and Description
static byte[]	hexDigitsLC
static byte[]	hexDigitsUC

Method Summary

Methods

Modifier and Type	Method and Description
static String	asHex(byte b) Return a hex string representing the bytes, zero padded to length of byte array.
static String	asHex(byte[] bytes) Return a hex string representing the bytes, zero padded to length of byte array.
static String	asHex(byte[] bytes, int start, int finish, char[] hexDigits)
static String	asHexLC(byte b)
static String	asHexLC(byte[] bytes)
static String	asHexUC(byte b)
static String	asHexUC(byte[] bytes)
static String	bytes2string(byte[] x) Return the string for some UTF-8 bytes
static int	compare(byte[] x1, byte[] x2) Compare two byte arrays which may be of different lengths
static int	compareByte(byte b1, byte b2)
static byte[]	copyOf(byte[] bytes)
static byte[]	copyOf(byte[] bytes, int start)
static byte[]	copyOf(byte[] bytes, int start, int length)
static String	fromByteBuffer(ByteBuffer bb) Decode a string into a ByteBuffer
static String	fromByteBuffer(ByteBuffer bb, CharsetDecoder dec) Decode a string into a ByteBuffer
static int	getInt(byte[] b) Get an int from a byte array (network order)
static int	getInt(byte[] b, int idx) Get an int from a byte array (network order)
static long	getLong(byte[] b) Get a long from a byte array (network order)
static long	getLong(byte[] b, int idx) Get a long from a byte array (network order)
static int	hexCharToInt(char c)
static void	main(String... args)
static byte[]	packInt(int val) int to byte array
static byte[]	packLong(long val) long to byte array
static void	setInt(int value, byte[] b) Put an int into a byte array
static void	setInt(int x, byte[] b, int idx) Put an int into a byte array from a given position
static void	setLong(long value, byte[] b) Put a long into a byte array
static void	setLong(long value, byte[] b, int idx) Put a long into a byte array from a given position
static byte[]	string2bytes(String x) Return the UTF-8 bytes for a string
static int	toByteBuffer(CharSequence s, ByteBuffer bb) Encode a string into a ByteBuffer : on return position is the end of the encoding
static int	toByteBuffer(CharSequence s, ByteBuffer bb, CharsetEncoder enc) Encode a string into a ByteBuffer : on return position is the end of the encoding

Methods inherited from class java.lang.Object

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

Field Detail

hexDigitsUC

public static final byte[] hexDigitsUC

hexDigitsLC

public static final byte[] hexDigitsLC

Method Detail

main

public static void main(String... args)

compare

public static int compare(byte[] x1,
          byte[] x2)

Compare two byte arrays which may be of different lengths

compareByte

public static int compareByte(byte b1,
              byte b2)

copyOf

public static byte[] copyOf(byte[] bytes)

copyOf

public static byte[] copyOf(byte[] bytes,
            int start)

copyOf

public static byte[] copyOf(byte[] bytes,
            int start,
            int length)

getInt

public static final int getInt(byte[] b)

Get an int from a byte array (network order)

Parameters:

b - Byte Array

getInt

public static final int getInt(byte[] b,
         int idx)

Get an int from a byte array (network order)

Parameters:

b - Byte Array

idx - Starting point of bytes

getLong

public static final long getLong(byte[] b)

Get a long from a byte array (network order)

Parameters:

b - Byte Array

getLong

public static final long getLong(byte[] b,
           int idx)

Get a long from a byte array (network order)

Parameters:

b - Byte Array

idx - Starting point of bytes

setInt

public static final void setInt(int value,
          byte[] b)

Put an int into a byte array

Parameters:

value - The integer

b - byte array

setInt

public static final void setInt(int x,
          byte[] b,
          int idx)

Put an int into a byte array from a given position

Parameters:

x - The integer

b - byte array

idx - starting point

setLong

public static final void setLong(long value,
           byte[] b)

Put a long into a byte array

Parameters:

value - The integer

b - byte array

setLong

public static final void setLong(long value,
           byte[] b,
           int idx)

Put a long into a byte array from a given position

Parameters:

value - The integer

b - byte array

idx - starting point

packInt

public static byte[] packInt(int val)

int to byte array

packLong

public static byte[] packLong(long val)

long to byte array

string2bytes

public static byte[] string2bytes(String x)

Return the UTF-8 bytes for a string

bytes2string

public static String bytes2string(byte[] x)

Return the string for some UTF-8 bytes

toByteBuffer

public static int toByteBuffer(CharSequence s,
               ByteBuffer bb)

Encode a string into a ByteBuffer : on return position is the end of the encoding

toByteBuffer

public static int toByteBuffer(CharSequence s,
               ByteBuffer bb,
               CharsetEncoder enc)

Encode a string into a ByteBuffer : on return position is the end of the encoding

fromByteBuffer

public static String fromByteBuffer(ByteBuffer bb)

Decode a string into a ByteBuffer

fromByteBuffer

public static String fromByteBuffer(ByteBuffer bb,
                    CharsetDecoder dec)

Decode a string into a ByteBuffer

asHex

public static String asHex(byte[] bytes)

Return a hex string representing the bytes, zero padded to length of byte array.

asHexUC

public static String asHexUC(byte[] bytes)

asHexLC

public static String asHexLC(byte[] bytes)

asHex

public static String asHex(byte[] bytes,
           int start,
           int finish,
           char[] hexDigits)

asHex

public static String asHex(byte b)

Return a hex string representing the bytes, zero padded to length of byte array.

asHexUC

public static String asHexUC(byte b)

asHexLC

public static String asHexLC(byte b)

hexCharToInt

public static int hexCharToInt(char c)