org.wltea.analyzer.core.CJKSegmenter Maven / Gradle / Ivy
/*
* IK 中文分词 版本 7.7.1
* IK Analyzer release 7.7.1
*
* 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.
*
* 源代码由林良益([email protected])提供
* 版权声明 2012，乌龙茶工作室
* provided by Linliangyi and copyright 2012 by Oolong studio
*
* 7.7.1版本 由 Magese ([email protected]) 更新
* release 7.7.1 update by Magese([email protected])
*
*/
package org.wltea.analyzer.core;
import java.util.LinkedList;
import java.util.List;
import org.wltea.analyzer.dic.Dictionary;
import org.wltea.analyzer.dic.Hit;
/**
* 中文-日韩文子分词器
*/
class CJKSegmenter implements ISegmenter {
//子分词器标签
private static final String SEGMENTER_NAME = "CJK_SEGMENTER";
//待处理的分词hit队列
private List tmpHits;
CJKSegmenter(){
this.tmpHits = new LinkedList<>();
}
/* (non-Javadoc)
* @see org.wltea.analyzer.core.ISegmenter#analyze(org.wltea.analyzer.core.AnalyzeContext)
*/
public void analyze(AnalyzeContext context) {
if(CharacterUtil.CHAR_USELESS != context.getCurrentCharType()){
//优先处理tmpHits中的hit
if(!this.tmpHits.isEmpty()){
//处理词段队列
Hit[] tmpArray = this.tmpHits.toArray(new Hit[0]);
for(Hit hit : tmpArray){
hit = Dictionary.getSingleton().matchWithHit(context.getSegmentBuff(), context.getCursor() , hit);
if(hit.isMatch()){
//输出当前的词
Lexeme newLexeme = new Lexeme(context.getBufferOffset() , hit.getBegin() , context.getCursor() - hit.getBegin() + 1 , Lexeme.TYPE_CNWORD);
context.addLexeme(newLexeme);
if(!hit.isPrefix()){//不是词前缀，hit不需要继续匹配，移除
this.tmpHits.remove(hit);
}
}else if(hit.isUnmatch()){
//hit不是词，移除
this.tmpHits.remove(hit);
}
}
}
//*********************************
//再对当前指针位置的字符进行单字匹配
Hit singleCharHit = Dictionary.getSingleton().matchInMainDict(context.getSegmentBuff(), context.getCursor(), 1);
if(singleCharHit.isMatch()){//首字成词
//输出当前的词
Lexeme newLexeme = new Lexeme(context.getBufferOffset() , context.getCursor() , 1 , Lexeme.TYPE_CNWORD);
context.addLexeme(newLexeme);
//同时也是词前缀
if(singleCharHit.isPrefix()){
//前缀匹配则放入hit列表
this.tmpHits.add(singleCharHit);
}
}else if(singleCharHit.isPrefix()){//首字为词前缀
//前缀匹配则放入hit列表
this.tmpHits.add(singleCharHit);
}
}else{
//遇到CHAR_USELESS字符
//清空队列
this.tmpHits.clear();
}
//判断缓冲区是否已经读完
if(context.isBufferConsumed()){
//清空队列
this.tmpHits.clear();
}
//判断是否锁定缓冲区
if(this.tmpHits.size() == 0){
context.unlockBuffer(SEGMENTER_NAME);
}else{
context.lockBuffer(SEGMENTER_NAME);
}
}
/* (non-Javadoc)
* @see org.wltea.analyzer.core.ISegmenter#reset()
*/
public void reset() {
//清空队列
this.tmpHits.clear();
}
}