package com.ozacc.mail.impl;

/*
 * @(#)ByteArrayDataSource.java	1.4 01/05/23
 *
 * Copyright 1998-2000 Sun Microsystems, Inc. All Rights Reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 
 * - Redistributions of source code must retain the above copyright
 *   notice, this list of conditions and the following disclaimer.
 * 
 * - Redistribution in binary form must reproduce the above copyright
 *   notice, this list of conditions and the following disclaimer in the
 *   documentation and/or other materials provided with the distribution.
 * 
 * Neither the name of Sun Microsystems, Inc. or the names of contributors
 * may be used to endorse or promote products derived from this software
 * without specific prior written permission.
 * 
 * This software is provided "AS IS," without a warranty of any kind. ALL
 * EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES,
 * INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A
 * PARTICULAR PURPOSE OR NON-INFRINGEMENT, ARE HEREBY EXCLUDED. SUN AND
 * ITS LICENSORS SHALL NOT BE LIABLE FOR ANY DAMAGES OR LIABILITIES
 * SUFFERED BY LICENSEE AS A RESULT OF  OR RELATING TO USE, MODIFICATION
 * OR DISTRIBUTION OF THE SOFTWARE OR ITS DERIVATIVES. IN NO EVENT WILL
 * SUN OR ITS LICENSORS BE LIABLE FOR ANY LOST REVENUE, PROFIT OR DATA, OR
 * FOR DIRECT, INDIRECT, SPECIAL, CONSEQUENTIAL, INCIDENTAL OR PUNITIVE
 * DAMAGES, HOWEVER CAUSED AND REGARDLESS OF THE THEORY OF LIABILITY,
 * ARISING OUT OF THE USE OF OR INABILITY TO USE SOFTWARE, EVEN IF SUN HAS
 * BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
 * 
 * You acknowledge that Software is not designed, licensed or intended
 * for use in the design, construction, operation or maintenance of any
 * nuclear facility.
 */

import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.io.UnsupportedEncodingException;

import javax.activation.DataSource;

/**
 * InputStream、byte array、StringからDataSourceインスタンスを生成するクラス。<br>
 * JavaMailパッケージ付属品。
 * <p>
 * <strong>注:</strong> このクラスはpublicですが、ozacc-mail library外からは使用しないでください。
 * 
 * @since 1.1
 * 
 * @author John Mani
 * @author Bill Shannon
 * @author Max Spivak
 */
public class ByteArrayDataSource implements DataSource {

	private byte[] data; // data

	private String type; // content-type

	/* Create a DataSource from an input stream */
	public ByteArrayDataSource(InputStream is, String type) {
		this.type = type;
		try {
			ByteArrayOutputStream os = new ByteArrayOutputStream();
			int ch;

			while ((ch = is.read()) != -1)
				// XXX - must be made more efficient by
				// doing buffered reads, rather than one byte reads
				os.write(ch);
			data = os.toByteArray();

		} catch (IOException ioex) {}
	}

	/* Create a DataSource from a byte array */
	public ByteArrayDataSource(byte[] data, String type) {
		this.data = data;
		this.type = type;
	}

	/* Create a DataSource from a String */
	public ByteArrayDataSource(String data, String type) {
		try {
			// Assumption that the string contains only ASCII
			// characters!  Otherwise just pass a charset into this
			// constructor and use it in getBytes()
			this.data = data.getBytes("iso-8859-1");
		} catch (UnsupportedEncodingException uex) {}
		this.type = type;
	}

	/**
	 * Return an InputStream for the data.
	 * Note - a new stream must be returned each time.
	 */
	public InputStream getInputStream() throws IOException {
		if (data == null)
			throw new IOException("no data");
		return new ByteArrayInputStream(data);
	}

	public OutputStream getOutputStream() throws IOException {
		throw new IOException("cannot do this");
	}

	public String getContentType() {
		return type;
	}

	public String getName() {
		return "dummy";
	}
}