org.apache.commons.io.input.InfiniteCircularInputStream Maven / Gradle / Ivy
/*
* 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.commons.io.input;
import java.io.InputStream;
/**
*
* An {@link InputStream} that infinitely repeats provided bytes.
*
* Closing a InfiniteCircularInputStream has no effect. The methods in
* this class can be called after the stream has been closed without generating
* an IOException.
*
*/
public class InfiniteCircularInputStream extends InputStream {
final private byte[] repeatedContent;
private int position = -1;
/**
* Creates a InfiniteCircularStream from the specified array of chars.
*
* @param repeatedContent
* Input buffer to be repeated (not copied)
*/
public InfiniteCircularInputStream(final byte[] repeatedContent) {
this.repeatedContent = repeatedContent;
}
@Override
public int read() {
position = (position + 1) % repeatedContent.length;
return repeatedContent[position] & 0xff;
}
}