147 lines
2.7 KiB
Java
147 lines
2.7 KiB
Java
/*
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* This file is part of the L2J Mobius project.
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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package com.l2jmobius.tools.dbinstaller.util;
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import java.io.IOException;
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import java.io.InputStream;
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/**
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* Prevent the underlying input stream to close.
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* @author Joe Cheng, Zoey76
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*/
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public class CloseShieldedInputStream extends InputStream
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{
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private InputStream _in = null;
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/**
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* Instantiates a new close shielded input stream.
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* @param in the in
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*/
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public CloseShieldedInputStream(InputStream in)
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{
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_in = in;
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}
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/**
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* {@inheritDoc}
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*/
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@Override
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public void close()
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{
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_in = null;
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}
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/**
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* {@inheritDoc}
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*/
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@Override
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public int read() throws IOException
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{
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if (_in == null)
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{
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throw new IOException("Stream is null!");
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}
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return _in.read();
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}
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/**
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* {@inheritDoc}
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*/
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@Override
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public int read(byte b[]) throws IOException
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{
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if (_in == null)
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{
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throw new IOException("Stream is null!");
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}
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return _in.read(b);
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}
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/**
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* {@inheritDoc}
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*/
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@Override
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public int read(byte b[], int off, int len) throws IOException
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{
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if (_in == null)
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{
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throw new IOException("Stream is null!");
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}
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return _in.read(b, off, len);
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}
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/**
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* {@inheritDoc}
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*/
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@Override
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public long skip(long n) throws IOException
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{
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if (_in == null)
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{
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throw new IOException("Stream is null!");
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}
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return _in.skip(n);
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}
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/**
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* {@inheritDoc}
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*/
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@Override
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public synchronized void mark(int readlimit)
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{
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if (_in != null)
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{
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_in.mark(readlimit);
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}
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}
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/**
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* {@inheritDoc}
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*/
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@Override
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public boolean markSupported()
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{
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if (_in == null)
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{
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return false;
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}
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return _in.markSupported();
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}
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/**
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* {@inheritDoc}
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*/
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@Override
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public synchronized void reset() throws IOException
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{
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if (_in == null)
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{
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throw new IOException("Stream is null!");
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}
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_in.reset();
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}
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/**
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* Gets the underlying stream.
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* @return the underlying stream
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*/
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public InputStream getUnderlyingStream()
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{
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return _in;
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}
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}
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