Package org.apache.jena.atlas.lib

Class Bytes

  • public class Bytes
extends java.lang.Object
    Byte-oriented operations. Packing and unpacking integers is in network order (Big endian - which is the preferred order in Java). See wikipedia Endianness.

    • Field Summary

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

    • Method Summary

      All Methods Static Methods Concrete Methods 
      Modifier and Type Method Description
      static java.lang.String asHex​(byte b)
      Return a hex string representing the byte.
      static java.lang.String asHex​(byte[] bytes)
      Return a hex string representing the bytes, zero padded to length of byte array.
      static java.lang.String asHex​(byte[] bytes, int start, int finish, char[] hexDigits)  
      static java.lang.String asHexLC​(byte b)  
      static java.lang.String asHexLC​(byte[] bytes)  
      static java.lang.String asHexUC​(byte b)  
      static java.lang.String asHexUC​(byte[] bytes)  
      static java.lang.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 java.lang.String fromByteBuffer​(java.nio.ByteBuffer bb)
      Decode a string into a ByteBuffer
      static java.lang.String fromByteBuffer​(java.nio.ByteBuffer bb, java.nio.charset.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 byte[] intToBytes​(int v)
      Put an int value into an allocated byte array.
      static byte[] longToBytes​(long v)
      Put a long value into an allocated byte array.
      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​(java.lang.String x)
      Return the UTF-8 bytes for a string
      static int toByteBuffer​(java.lang.CharSequence s, java.nio.ByteBuffer bb)
      Encode a string into a ByteBuffer : on return position is the end of the encoding
      static int toByteBuffer​(java.lang.CharSequence s, java.nio.ByteBuffer bb, java.nio.charset.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

      • 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)

      • intToBytes

        public static byte[] intToBytes​(int v)
        Put an int value into an allocated byte array.
        Parameters:
        v -
        Returns:
        byte[] array
        See Also:
        Integer.SIZE

      • longToBytes

        public static byte[] longToBytes​(long v)
        Put a long value into an allocated byte array.
        Parameters:
        v -
        Returns:
        byte[] array
        See Also:
        Long.SIZE

      • 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​(java.lang.String x)
        Return the UTF-8 bytes for a string

      • bytes2string

        public static java.lang.String bytes2string​(byte[] x)
        Return the string for some UTF-8 bytes

      • toByteBuffer

        public static int toByteBuffer​(java.lang.CharSequence s,
                               java.nio.ByteBuffer bb)
        Encode a string into a ByteBuffer : on return position is the end of the encoding

      • toByteBuffer

        public static int toByteBuffer​(java.lang.CharSequence s,
                               java.nio.ByteBuffer bb,
                               java.nio.charset.CharsetEncoder enc)
        Encode a string into a ByteBuffer : on return position is the end of the encoding

      • fromByteBuffer

        public static java.lang.String fromByteBuffer​(java.nio.ByteBuffer bb)
        Decode a string into a ByteBuffer

      • fromByteBuffer

        public static java.lang.String fromByteBuffer​(java.nio.ByteBuffer bb,
                                              java.nio.charset.CharsetDecoder dec)
        Decode a string into a ByteBuffer

      • asHex

        public static java.lang.String asHex​(byte[] bytes)
        Return a hex string representing the bytes, zero padded to length of byte array.

      • asHexUC

        public static java.lang.String asHexUC​(byte[] bytes)

      • asHexLC

        public static java.lang.String asHexLC​(byte[] bytes)

      • asHex

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

      • asHex

        public static java.lang.String asHex​(byte b)
        Return a hex string representing the byte.

      • asHexUC

        public static java.lang.String asHexUC​(byte b)

      • asHexLC

        public static java.lang.String asHexLC​(byte b)

      • hexCharToInt

        public static int hexCharToInt​(char c)