org.apache.hadoop.util
Class UTF8ByteArrayUtils

java.lang.Object
  org.apache.hadoop.util.UTF8ByteArrayUtils

public class UTF8ByteArrayUtils
extends Object

Constructor Summary

UTF8ByteArrayUtils()

Method Summary

static int	findByte(byte[] utf, int start, int end, byte b) Find the first occurrence of the given byte b in a UTF-8 encoded string
static int	findBytes(byte[] utf, int start, int end, byte[] b) Find the first occurrence of the given bytes b in a UTF-8 encoded string
static int	findNthByte(byte[] utf, byte b, int n) Find the nth occurrence of the given byte b in a UTF-8 encoded string
static int	findNthByte(byte[] utf, int start, int length, byte b, int n) Find the nth occurrence of the given byte b in a UTF-8 encoded string

Methods inherited from class java.lang.Object

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

Constructor Detail

UTF8ByteArrayUtils

public UTF8ByteArrayUtils()

Method Detail

findByte

public static int findByte(byte[] utf,
                           int start,
                           int end,
                           byte b)

Find the first occurrence of the given byte b in a UTF-8 encoded string

Parameters:

utf - a byte array containing a UTF-8 encoded string

start - starting offset

end - ending position

b - the byte to find

Returns:

position that first byte occures otherwise -1

findBytes

public static int findBytes(byte[] utf,
                            int start,
                            int end,
                            byte[] b)

Find the first occurrence of the given bytes b in a UTF-8 encoded string

Parameters:

utf - a byte array containing a UTF-8 encoded string

start - starting offset

end - ending position

b - the bytes to find

Returns:

position that first byte occures otherwise -1

findNthByte

public static int findNthByte(byte[] utf,
                              int start,
                              int length,
                              byte b,
                              int n)

Find the nth occurrence of the given byte b in a UTF-8 encoded string

Parameters:

utf - a byte array containing a UTF-8 encoded string

start - starting offset

length - the length of byte array

b - the byte to find

n - the desired occurrence of the given byte

Returns:

position that nth occurrence of the given byte if exists; otherwise -1

findNthByte

public static int findNthByte(byte[] utf,
                              byte b,
                              int n)

Find the nth occurrence of the given byte b in a UTF-8 encoded string

Parameters:

utf - a byte array containing a UTF-8 encoded string

b - the byte to find

n - the desired occurrence of the given byte

Returns:

position that nth occurrence of the given byte if exists; otherwise -1