Package org.apache.lucene.util.automaton

Class UTF32ToUTF8

java.lang.Object

org.apache.lucene.util.automaton.UTF32ToUTF8

public final class UTF32ToUTF8
extends java.lang.Object

Converts UTF-32 automata to the equivalent UTF-8 representation.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
private static class	UTF32ToUTF8.UTF8Byte
private static class	UTF32ToUTF8.UTF8Sequence

Field Summary

Fields

Modifier and Type	Field	Description
private static int[]	endCodes
private UTF32ToUTF8.UTF8Sequence	endUTF8
(package private) static int[]	MASKS
private static int[]	startCodes
private UTF32ToUTF8.UTF8Sequence	startUTF8
private UTF32ToUTF8.UTF8Sequence	tmpUTF8a
private UTF32ToUTF8.UTF8Sequence	tmpUTF8b
(package private) Automaton.Builder	utf8

Constructor Summary

Constructors

Constructor	Description
UTF32ToUTF8()	Sole constructor.

Method Summary

Modifier and Type	Method	Description
private void	all(int start, int end, int startCode, int endCode, int left)
private void	build(int start, int end, UTF32ToUTF8.UTF8Sequence startUTF8, UTF32ToUTF8.UTF8Sequence endUTF8, int upto)
Automaton	convert(Automaton utf32)	Converts an incoming utf32 automaton to an equivalent utf8 one.
(package private) void	convertOneEdge(int start, int end, int startCodePoint, int endCodePoint)
private void	end(int start, int end, UTF32ToUTF8.UTF8Sequence endUTF8, int upto, boolean doAll)
private void	start(int start, int end, UTF32ToUTF8.UTF8Sequence startUTF8, int upto, boolean doAll)

Methods inherited from class java.lang.Object

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

Field Detail

startCodes

private static final int[] startCodes

endCodes

private static final int[] endCodes

MASKS

static int[] MASKS

startUTF8

private final UTF32ToUTF8.UTF8Sequence startUTF8

endUTF8

private final UTF32ToUTF8.UTF8Sequence endUTF8

tmpUTF8a

private final UTF32ToUTF8.UTF8Sequence tmpUTF8a

tmpUTF8b

private final UTF32ToUTF8.UTF8Sequence tmpUTF8b

utf8

Automaton.Builder utf8

Constructor Detail

UTF32ToUTF8

public UTF32ToUTF8()

Sole constructor.

Method Detail

convertOneEdge

void convertOneEdge(int start,
                    int end,
                    int startCodePoint,
                    int endCodePoint)

build

private void build(int start,
                   int end,
                   UTF32ToUTF8.UTF8Sequence startUTF8,
                   UTF32ToUTF8.UTF8Sequence endUTF8,
                   int upto)

start

private void start(int start,
                   int end,
                   UTF32ToUTF8.UTF8Sequence startUTF8,
                   int upto,
                   boolean doAll)

end

private void end(int start,
                 int end,
                 UTF32ToUTF8.UTF8Sequence endUTF8,
                 int upto,
                 boolean doAll)

all

private void all(int start,
                 int end,
                 int startCode,
                 int endCode,
                 int left)

convert

public Automaton convert(Automaton utf32)

Converts an incoming utf32 automaton to an equivalent utf8 one. The incoming automaton need not be deterministic. Note that the returned automaton will not in general be deterministic, so you must determinize it if that's needed.