All Downloads are FREE. Search and download functionalities are using the official Maven repository.

net.sourceforge.javadpkg.io.impl.DataStreamSource Maven / Gradle / Ivy

There is a newer version: 1.0.5
Show newest version
/*
 * dpkg - Debian Package library and the Debian Package Maven plugin
 * (c) Copyright 2015 Gerrit Hohl
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 */
package net.sourceforge.javadpkg.io.impl;

import java.io.IOException;
import java.io.InputStream;

import net.sourceforge.javadpkg.io.DataSource;

/**
 * 

* A {@link DataSource} implementation based on a stream. *

* * @author Gerrit Hohl ([email protected]) * @version 1.0, 31.12.2015 by Gerrit Hohl */ public class DataStreamSource implements DataSource { /** The stream. */ private InputStream in; /** *

* The public stream which is returned by the {@link #getInputStream()} * method. *

*/ private UncloseableInputStream publicIn; /** The name of the source. */ private String name; /** The flag if the {@link #close()} method will close the stream. */ private boolean closeable; /** *

* Creates a source. *

* * @param in * The stream. * @param name * The name of the source. * @param closeable * The flag if the {@link #close()} method will close the stream. * @throws IllegalArgumentException * If any of the parameters are null. */ public DataStreamSource(InputStream in, String name, boolean closeable) { super(); if (in == null) throw new IllegalArgumentException("Argument in is null."); if (name == null) throw new IllegalArgumentException("Argument name is null."); this.in = in; this.name = name; this.closeable = closeable; this.createPublicInputStream(); } @Override public String getName() { return this.name; } @Override public long getLength() { return -1; } @Override public boolean isResettable() { return false; } @Override public void reset() throws IOException { throw new IOException("Source |" + this.name + "| doesn't support a reset."); } /** *

* Creates the {@link InputStream} which is returned by the * {@link #getInputStream()} method. *

*/ private void createPublicInputStream() { this.publicIn = new UncloseableInputStream(this.in, new DelegateCloseHandler(this)); } @Override public InputStream getInputStream() throws IOException { return this.publicIn; } @Override public void close() throws IOException { try { if ((this.in != null) && this.closeable) { this.in.close(); } } finally { this.publicIn = null; this.in = null; } } }




© 2015 - 2024 Weber Informatics LLC | Privacy Policy