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java.lang.Object org.apache.hadoop.streaming.UTF8ByteArrayUtils
public class UTF8ByteArrayUtils
General utils for byte array containing UTF-8 encoded strings
Constructor Summary | |
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UTF8ByteArrayUtils()
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Method Summary | |
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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 |
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 |
static int |
findTab(byte[] utf)
Find the first occured tab in a UTF-8 encoded string |
static int |
findTab(byte[] utf,
int start,
int length)
Find the first occured tab in a UTF-8 encoded string |
static int |
readLine(LineRecordReader.LineReader lineReader,
Text out)
Read a utf8 encoded line from a data input stream. |
static void |
splitKeyVal(byte[] utf,
int start,
int length,
Text key,
Text val,
int splitPos)
split a UTF-8 byte array into key and value assuming that the delimilator is at splitpos. |
static void |
splitKeyVal(byte[] utf,
Text key,
Text val,
int splitPos)
split a UTF-8 byte array into key and value assuming that the delimilator is at splitpos. |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Constructor Detail |
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public UTF8ByteArrayUtils()
Method Detail |
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public static int findTab(byte[] utf, int start, int length)
utf
- a byte array containing a UTF-8 encoded stringstart
- starting offsetlength
- no. of bytes
public static int findByte(byte[] utf, int start, int end, byte b)
utf
- a byte array containing a UTF-8 encoded stringstart
- starting offsetend
- ending positionb
- the byte to find
public static int findNthByte(byte[] utf, int start, int length, byte b, int n)
utf
- a byte array containing a UTF-8 encoded stringstart
- starting offsetlength
- the length of byte arrayb
- the byte to findn
- the desired occurrence of the given byte
public static int findNthByte(byte[] utf, byte b, int n)
utf
- a byte array containing a UTF-8 encoded stringb
- the byte to findn
- the desired occurrence of the given byte
public static int findTab(byte[] utf)
utf
- a byte array containing a UTF-8 encoded string
public static void splitKeyVal(byte[] utf, int start, int length, Text key, Text val, int splitPos) throws IOException
utf
- utf-8 encoded stringstart
- starting offsetlength
- no. of byteskey
- contains key upon the method is returnedval
- contains value upon the method is returnedsplitPos
- the split pos
IOException
public static void splitKeyVal(byte[] utf, Text key, Text val, int splitPos) throws IOException
utf
- utf-8 encoded stringkey
- contains key upon the method is returnedval
- contains value upon the method is returnedsplitPos
- the split pos
IOException
public static int readLine(LineRecordReader.LineReader lineReader, Text out) throws IOException
lineReader
- LineReader to read the line from.out
- Text to read into
IOException
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