| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You under the Apache License, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package org.apache.lucene.analysis.ko.dict; |
| |
| import java.io.BufferedInputStream; |
| import java.io.IOException; |
| import java.io.InputStream; |
| import org.apache.lucene.codecs.CodecUtil; |
| import org.apache.lucene.store.DataInput; |
| import org.apache.lucene.store.InputStreamDataInput; |
| import org.apache.lucene.util.IOUtils; |
| |
| /** Character category data. */ |
| public final class CharacterDefinition { |
| |
| public static final String FILENAME_SUFFIX = ".dat"; |
| public static final String HEADER = "ko_cd"; |
| public static final int VERSION = 1; |
| |
| public static final int CLASS_COUNT = CharacterClass.values().length; |
| |
| // only used internally for lookup: |
| enum CharacterClass { |
| NGRAM, |
| DEFAULT, |
| SPACE, |
| SYMBOL, |
| NUMERIC, |
| ALPHA, |
| CYRILLIC, |
| GREEK, |
| HIRAGANA, |
| KATAKANA, |
| KANJI, |
| HANGUL, |
| HANJA, |
| HANJANUMERIC |
| } |
| |
| private final byte[] characterCategoryMap = new byte[0x10000]; |
| |
| private final boolean[] invokeMap = new boolean[CLASS_COUNT]; |
| private final boolean[] groupMap = new boolean[CLASS_COUNT]; |
| |
| // the classes: |
| public static final byte NGRAM = (byte) CharacterClass.NGRAM.ordinal(); |
| public static final byte DEFAULT = (byte) CharacterClass.DEFAULT.ordinal(); |
| public static final byte SPACE = (byte) CharacterClass.SPACE.ordinal(); |
| public static final byte SYMBOL = (byte) CharacterClass.SYMBOL.ordinal(); |
| public static final byte NUMERIC = (byte) CharacterClass.NUMERIC.ordinal(); |
| public static final byte ALPHA = (byte) CharacterClass.ALPHA.ordinal(); |
| public static final byte CYRILLIC = (byte) CharacterClass.CYRILLIC.ordinal(); |
| public static final byte GREEK = (byte) CharacterClass.GREEK.ordinal(); |
| public static final byte HIRAGANA = (byte) CharacterClass.HIRAGANA.ordinal(); |
| public static final byte KATAKANA = (byte) CharacterClass.KATAKANA.ordinal(); |
| public static final byte KANJI = (byte) CharacterClass.KANJI.ordinal(); |
| public static final byte HANGUL = (byte) CharacterClass.HANGUL.ordinal(); |
| public static final byte HANJA = (byte) CharacterClass.HANJA.ordinal(); |
| public static final byte HANJANUMERIC = (byte) CharacterClass.HANJANUMERIC.ordinal(); |
| |
| private CharacterDefinition() throws IOException { |
| InputStream is = null; |
| boolean success = false; |
| try { |
| is = BinaryDictionary.getClassResource(getClass(), FILENAME_SUFFIX); |
| is = new BufferedInputStream(is); |
| final DataInput in = new InputStreamDataInput(is); |
| CodecUtil.checkHeader(in, HEADER, VERSION, VERSION); |
| in.readBytes(characterCategoryMap, 0, characterCategoryMap.length); |
| for (int i = 0; i < CLASS_COUNT; i++) { |
| final byte b = in.readByte(); |
| invokeMap[i] = (b & 0x01) != 0; |
| groupMap[i] = (b & 0x02) != 0; |
| } |
| success = true; |
| } finally { |
| if (success) { |
| IOUtils.close(is); |
| } else { |
| IOUtils.closeWhileHandlingException(is); |
| } |
| } |
| } |
| |
| public byte getCharacterClass(char c) { |
| return characterCategoryMap[c]; |
| } |
| |
| public boolean isInvoke(char c) { |
| return invokeMap[characterCategoryMap[c]]; |
| } |
| |
| public boolean isGroup(char c) { |
| return groupMap[characterCategoryMap[c]]; |
| } |
| |
| public boolean isHanja(char c) { |
| final byte characterClass = getCharacterClass(c); |
| return characterClass == HANJA || characterClass == HANJANUMERIC; |
| } |
| |
| public boolean isHangul(char c) { |
| return getCharacterClass(c) == HANGUL; |
| } |
| |
| public boolean hasCoda(char ch) { |
| return ((ch - 0xAC00) % 0x001C) != 0; |
| } |
| |
| public static byte lookupCharacterClass(String characterClassName) { |
| return (byte) CharacterClass.valueOf(characterClassName).ordinal(); |
| } |
| |
| public static CharacterDefinition getInstance() { |
| return SingletonHolder.INSTANCE; |
| } |
| |
| private static class SingletonHolder { |
| static final CharacterDefinition INSTANCE; |
| |
| static { |
| try { |
| INSTANCE = new CharacterDefinition(); |
| } catch (IOException ioe) { |
| throw new RuntimeException("Cannot load CharacterDefinition.", ioe); |
| } |
| } |
| } |
| } |