org.openjena.atlas.lib
Class Bytes

java.lang.Object
  extended by org.openjena.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
static byte[] hexDigitsLC
           
static byte[] hexDigitsUC
           
 
Method Summary
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[] bytes)
           
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)

hexCharToInt

public static int hexCharToInt(char c)


Licenced under the Apache License, Version 2.0