| /* |
| * 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.mockfile; |
| |
| import java.io.FilterInputStream; |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.util.Objects; |
| |
| /** |
| * A {@code FilterInputStream2} contains another |
| * {@code InputStream}, which it uses as its basic |
| * source of data, possibly transforming the data along the |
| * way or providing additional functionality. |
| * <p> |
| * Note: unlike {@link FilterInputStream} this class |
| * delegates every method by default. This means to transform |
| * {@code read} calls, you need to override multiple methods. |
| * On the other hand, it is less trappy: a simple implementation |
| * that just overrides {@code close} will not force bytes to be |
| * read one-at-a-time. |
| */ |
| public class FilterInputStream2 extends InputStream { |
| |
| /** |
| * The underlying {@code InputStream} instance. |
| */ |
| protected final InputStream delegate; |
| |
| /** |
| * Construct a {@code FilterInputStream2} based on |
| * the specified base stream. |
| * <p> |
| * Note that base stream is closed if this stream is closed. |
| * @param delegate specified base stream. |
| */ |
| public FilterInputStream2(InputStream delegate) { |
| this.delegate = Objects.requireNonNull(delegate); |
| } |
| |
| @Override |
| public int read() throws IOException { |
| return delegate.read(); |
| } |
| |
| @Override |
| public int read(byte[] b) throws IOException { |
| return delegate.read(b); |
| } |
| |
| @Override |
| public int read(byte[] b, int off, int len) throws IOException { |
| return delegate.read(b, off, len); |
| } |
| |
| @Override |
| public long skip(long n) throws IOException { |
| return delegate.skip(n); |
| } |
| |
| @Override |
| public int available() throws IOException { |
| return delegate.available(); |
| } |
| |
| @Override |
| public void close() throws IOException { |
| delegate.close(); |
| } |
| |
| @Override |
| public synchronized void mark(int readlimit) { |
| delegate.mark(readlimit); |
| } |
| |
| @Override |
| public synchronized void reset() throws IOException { |
| delegate.reset(); |
| } |
| |
| @Override |
| public boolean markSupported() { |
| return delegate.markSupported(); |
| } |
| } |