Package org.apache.hadoop.util

Class UTF8ByteArrayUtils

java.lang.Object

org.apache.hadoop.util.UTF8ByteArrayUtils

@Private
@Unstable
public class UTF8ByteArrayUtils
extends Object

Constructor Summary

Constructors

Constructor	Description
UTF8ByteArrayUtils()

Method Summary

Modifier and Type	Method	Description
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 Details

UTF8ByteArrayUtils

public UTF8ByteArrayUtils()

Method Details

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 occurs, 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 occurs, 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