android-platform-libcore/luni/src/main/java/org/apache/harmony/luni/internal/net/www/protocol/ftp/FtpURLInputStream.java

/*
 *  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.harmony.luni.internal.net.www.protocol.ftp;

import java.io.IOException;
import java.io.InputStream;
import java.net.Socket;

/**
 * This class associates a given inputStream with a control socket. This ensures
 * the control socket Object stays live while the stream is in use
 */
class FtpURLInputStream extends InputStream {

    private InputStream is; // Actual input stream

    private Socket controlSocket;

    public FtpURLInputStream(InputStream is, Socket controlSocket) {
        this.is = is;
        this.controlSocket = controlSocket;
    }

    @Override
    public int read() throws IOException {
        return is.read();
    }

    @Override
    public int read(byte[] buf, int off, int nbytes) throws IOException {
        return is.read(buf, off, nbytes);
    }

    @Override
    public synchronized void reset() throws IOException {
        is.reset();
    }

    @Override
    public synchronized void mark(int limit) {
        is.mark(limit);
    }

    @Override
    public boolean markSupported() {
        return is.markSupported();
    }

    @Override
    public void close() {
        try {
            is.close();
        } catch (Exception e) {
            // ignored
        }
        try {
            controlSocket.close();
        } catch (Exception e) {
            // ignored
        }
    }

    @Override
    public int available() throws IOException {
        return is.available();
    }

    @Override
    public long skip(long sbytes) throws IOException {
        return is.skip(sbytes);
    }

}