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    1   package com.ozacc.mail.impl;
    2
    3   /*
    4    * @(#)ByteArrayDataSource.java	1.4 01/05/23
    5    *
    6    * Copyright 1998-2000 Sun Microsystems, Inc. All Rights Reserved.
    7    *
    8    * Redistribution and use in source and binary forms, with or without
    9    * modification, are permitted provided that the following conditions
    10   * are met:
    11   *
    12   * - Redistributions of source code must retain the above copyright
    13   *   notice, this list of conditions and the following disclaimer.
    14   *
    15   * - Redistribution in binary form must reproduce the above copyright
    16   *   notice, this list of conditions and the following disclaimer in the
    17   *   documentation and/or other materials provided with the distribution.
    18   *
    19   * Neither the name of Sun Microsystems, Inc. or the names of contributors
    20   * may be used to endorse or promote products derived from this software
    21   * without specific prior written permission.
    22   *
    23   * This software is provided "AS IS," without a warranty of any kind. ALL
    24   * EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES,
    25   * INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A
    26   * PARTICULAR PURPOSE OR NON-INFRINGEMENT, ARE HEREBY EXCLUDED. SUN AND
    27   * ITS LICENSORS SHALL NOT BE LIABLE FOR ANY DAMAGES OR LIABILITIES
    28   * SUFFERED BY LICENSEE AS A RESULT OF  OR RELATING TO USE, MODIFICATION
    29   * OR DISTRIBUTION OF THE SOFTWARE OR ITS DERIVATIVES. IN NO EVENT WILL
    30   * SUN OR ITS LICENSORS BE LIABLE FOR ANY LOST REVENUE, PROFIT OR DATA, OR
    31   * FOR DIRECT, INDIRECT, SPECIAL, CONSEQUENTIAL, INCIDENTAL OR PUNITIVE
    32   * DAMAGES, HOWEVER CAUSED AND REGARDLESS OF THE THEORY OF LIABILITY,
    33   * ARISING OUT OF THE USE OF OR INABILITY TO USE SOFTWARE, EVEN IF SUN HAS
    34   * BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
    35   *
    36   * You acknowledge that Software is not designed, licensed or intended
    37   * for use in the design, construction, operation or maintenance of any
    38   * nuclear facility.
    39   */
    40
    41  import java.io.ByteArrayInputStream;
    42  import java.io.ByteArrayOutputStream;
    43  import java.io.IOException;
    44  import java.io.InputStream;
    45  import java.io.OutputStream;
    46  import java.io.UnsupportedEncodingException;
    47
    48  import javax.activation.DataSource;
    49
    50  /***
    51   * InputStream、byte array、StringからDataSourceインスタンスを生成するクラス。<br>
    52   * JavaMailパッケージ付属品。
    53   * <p>
    54   * <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。
    55   *
    56   * @since 1.1
    57   *
    58   * @author John Mani
    59   * @author Bill Shannon
    60   * @author Max Spivak
    61   */
    62  public class ByteArrayDataSource implements DataSource {
    63
    64  	private byte[] data; // data
    65
    66  	private String type; // content-type
    67
    68  	/* Create a DataSource from an input stream */
    69  	public ByteArrayDataSource(InputStream is, String type) {
    70  		this.type = type;
    71  		try {
    72  			ByteArrayOutputStream os = new ByteArrayOutputStream();
    73  			int ch;
    74
    75  			while ((ch = is.read()) != -1)
    76  				// XXX - must be made more efficient by
    77  				// doing buffered reads, rather than one byte reads
    78  				os.write(ch);
    79  			data = os.toByteArray();
    80
    81  		} catch (IOException ioex) {}
    82  	}
    83
    84  	/* Create a DataSource from a byte array */
    85  	public ByteArrayDataSource(byte[] data, String type) {
    86  		this.data = data;
    87  		this.type = type;
    88  	}
    89
    90  	/* Create a DataSource from a String */
    91  	public ByteArrayDataSource(String data, String type) {
    92  		try {
    93  			// Assumption that the string contains only ASCII
    94  			// characters!  Otherwise just pass a charset into this
    95  			// constructor and use it in getBytes()
    96  			this.data = data.getBytes("iso-8859-1");
    97  		} catch (UnsupportedEncodingException uex) {}
    98  		this.type = type;
    99  	}
    100
    101 	/***
    102 	 * Return an InputStream for the data.
    103 	 * Note - a new stream must be returned each time.
    104 	 */
    105 	public InputStream getInputStream() throws IOException {
    106 		if (data == null)
    107 			throw new IOException("no data");
    108 		return new ByteArrayInputStream(data);
    109 	}
    110
    111 	public OutputStream getOutputStream() throws IOException {
    112 		throw new IOException("cannot do this");
    113 	}
    114
    115 	public String getContentType() {
    116 		return type;
    117 	}
    118
    119 	public String getName() {
    120 		return "dummy";
    121 	}
    122 }