/**
* 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;
import java.io.IOException;
import java.io.Reader;
/**
* CharReader is a Reader wrapper. It reads chars from
* Reader and outputs {@link CharStream}, defining an
* identify function {@link #correctOffset} method that
* simply returns the provided offset.
*/
public final class CharReader extends CharStream {
protected Reader input;
public static CharStream get(Reader input) {
return input instanceof CharStream ?
(CharStream)input : new CharReader(input);
}
private CharReader(Reader in) {
input = in;
}
public int correctOffset(int currentOff) {
return currentOff;
}
public void close() throws IOException {
input.close();
}
public int read(char[] cbuf, int off, int len) throws IOException {
return input.read(cbuf, off, len);
}
public boolean markSupported(){
return input.markSupported();
}
public void mark( int readAheadLimit ) throws IOException {
input.mark(readAheadLimit);
}
public void reset() throws IOException {
input.reset();
}
}