src/org/sonews/util/io/ArticleInputStream.java
author cli
Mon Jun 06 20:12:21 2011 +0200 (2011-06-06)
changeset 42 7f84f4de2893
parent 37 74139325d305
permissions -rwxr-xr-x
Add HSQLDB stubs and reformat some source files.
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/*
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 *   SONEWS News Server
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 *   see AUTHORS for the list of contributors
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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
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 *   GNU 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 org.sonews.util.io;
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import java.io.ByteArrayOutputStream;
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import java.io.IOException;
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import java.io.InputStream;
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import java.io.UnsupportedEncodingException;
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import org.sonews.storage.Article;
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/**
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 * Capsulates an Article to provide a raw InputStream.
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 * @author Christian Lins
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 * @since sonews/0.5.0
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 */
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public class ArticleInputStream extends InputStream {
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	private byte[] buf;
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	private int pos = 0;
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	public ArticleInputStream(final Article art)
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			throws IOException, UnsupportedEncodingException {
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		final ByteArrayOutputStream out = new ByteArrayOutputStream();
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		out.write(art.getHeaderSource().getBytes("UTF-8"));
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		out.write("\r\n\r\n".getBytes());
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		out.write(art.getBody()); // Without CRLF
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		out.flush();
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		this.buf = out.toByteArray();
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	}
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	/**
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	 * This method reads one byte from the stream.  The <code>pos</code>
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	 * counter is advanced to the next byte to be read.  The byte read is
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	 * returned as an int in the range of 0-255.  If the stream position
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	 * is already at the end of the buffer, no byte is read and a -1 is
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	 * returned in order to indicate the end of the stream.
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	 *
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	 * @return The byte read, or -1 if end of stream
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	 */
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	@Override
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	public synchronized int read() {
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		if (pos < buf.length) {
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			return ((int) buf[pos++]) & 0xFF;
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		} else {
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			return -1;
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		}
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	}
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}