org.apache.solr.common.util

Class ByteUtils

java.lang.Object

org.apache.solr.common.util.ByteUtils

public class ByteUtils
extends Object

Constructor Summary

Constructors

Constructor and Description
ByteUtils()

Method Summary

Methods

Modifier and Type	Method and Description
static int	UTF16toUTF8(CharSequence s, int offset, int len, byte[] result, int resultOffset) Writes UTF8 into the byte array, starting at offset.
static String	UTF8toUTF16(byte[] utf8, int offset, int len) Convert UTF8 bytes into a String
static int	UTF8toUTF16(byte[] utf8, int offset, int len, char[] out, int out_offset) Converts utf8 to utf16 and returns the number of 16 bit Java chars written.
static void	UTF8toUTF16(byte[] utf8, int offset, int len, CharArr out) Convert UTF8 bytes into UTF16 characters.

Methods inherited from class java.lang.Object

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

Constructor Detail

ByteUtils

public ByteUtils()

Method Detail

UTF8toUTF16

public static int UTF8toUTF16(byte[] utf8,
              int offset,
              int len,
              char[] out,
              int out_offset)

Converts utf8 to utf16 and returns the number of 16 bit Java chars written. Full characters are read, even if this reads past the length passed (and can result in an ArrayOutOfBoundsException if invalid UTF8 is passed). Explicit checks for valid UTF8 are not performed. The char[] out should probably have enough room to hold the worst case of each byte becoming a Java char.

UTF8toUTF16

public static void UTF8toUTF16(byte[] utf8,
               int offset,
               int len,
               CharArr out)

Convert UTF8 bytes into UTF16 characters.

UTF8toUTF16

public static String UTF8toUTF16(byte[] utf8,
                 int offset,
                 int len)

Convert UTF8 bytes into a String

UTF16toUTF8

public static int UTF16toUTF8(CharSequence s,
              int offset,
              int len,
              byte[] result,
              int resultOffset)

Writes UTF8 into the byte array, starting at offset. The caller should ensure that there is enough space for the worst-case scenario.

Returns:

the number of bytes written