-package org.apache.lucene.analysis;
-
-/**
- * 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.
- */
-
-import java.io.IOException;
-import java.io.Reader;
-
-import org.apache.lucene.analysis.tokenattributes.OffsetAttribute;
-import org.apache.lucene.analysis.tokenattributes.CharTermAttribute;
-import org.apache.lucene.util.AttributeSource;
-
-/**
- * Emits the entire input as a single token.
- */
-public final class KeywordTokenizer extends Tokenizer {
-
- private static final int DEFAULT_BUFFER_SIZE = 256;
-
- private boolean done = false;
- private int finalOffset;
- private final CharTermAttribute termAtt = addAttribute(CharTermAttribute.class);
- private OffsetAttribute offsetAtt = addAttribute(OffsetAttribute.class);
-
- public KeywordTokenizer(Reader input) {
- this(input, DEFAULT_BUFFER_SIZE);
- }
-
- public KeywordTokenizer(Reader input, int bufferSize) {
- super(input);
- termAtt.resizeBuffer(bufferSize);
- }
-
- public KeywordTokenizer(AttributeSource source, Reader input, int bufferSize) {
- super(source, input);
- termAtt.resizeBuffer(bufferSize);
- }
-
- public KeywordTokenizer(AttributeFactory factory, Reader input, int bufferSize) {
- super(factory, input);
- termAtt.resizeBuffer(bufferSize);
- }
-
- @Override
- public final boolean incrementToken() throws IOException {
- if (!done) {
- clearAttributes();
- done = true;
- int upto = 0;
- char[] buffer = termAtt.buffer();
- while (true) {
- final int length = input.read(buffer, upto, buffer.length-upto);
- if (length == -1) break;
- upto += length;
- if (upto == buffer.length)
- buffer = termAtt.resizeBuffer(1+buffer.length);
- }
- termAtt.setLength(upto);
- finalOffset = correctOffset(upto);
- offsetAtt.setOffset(correctOffset(0), finalOffset);
- return true;
- }
- return false;
- }
-
- @Override
- public final void end() {
- // set final offset
- offsetAtt.setOffset(finalOffset, finalOffset);
- }
-
- @Override
- public void reset(Reader input) throws IOException {
- super.reset(input);
- this.done = false;
- }
-}