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Common base for all OpenBP projects

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/*
 *   Licensed 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.openbp.common.net;

import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.URL;
import java.net.URLConnection;

import org.openbp.common.util.ToStringHelper;

/**
 * To be used for URLs that refer to byte arrays in memory.
 *
 * @author Stephan Pauxberger
 */
public class ByteArrayURLConnection extends URLConnection
{
	/** Byte array */
	byte[] bytes;

	/**
	 * Constructor.
	 *
	 * @param url Url
	 * @param bytes Byte array
	 */
	public ByteArrayURLConnection(URL url, byte [] bytes)
	{
		super(url);
		this.bytes = bytes;
	}

	public void connect()
	{
	}

	public int getContentLength()
	{
		return bytes.length;
	}

	public String getContentType()
	{
		String type = null;
		try
		{
			type = guessContentTypeFromStream(new ByteArrayInputStream(bytes));
		}
		catch (IOException ex)
		{
		}
		return type;
	}

	public Object getContent()
		throws IOException
	{
		return bytes;
	}

	public InputStream getInputStream()
		throws IOException
	{
		return new ByteArrayInputStream(bytes);
	}

	public OutputStream getOutputStream()
		throws IOException
	{
		throw new IOException("bytearray URLs cannot be written to");
	}

	public String toString()
	{
		return ToStringHelper.toString(this, "uRL");
	}
}