streamutilities.java

来自「一个用java写的mail.里面的代码值得我们去研究！学习。」· Java 代码 · 共 62 行

/*
** $Id: StreamUtilities.java,v 1.2 2001/05/07 12:34:45 kunugi Exp $
**
** Copyright (c) 2000-2001 Jeff Gay
** on behalf of ICEMail.org <http://www.icemail.org>
** Copyright (c) 1998-2000 by Timothy Gerard Endres
** 
** This program is free software.
** 
** You may redistribute it and/or modify it under the terms of the GNU
** General Public License as published by the Free Software Foundation.
** Version 2 of the license should be included with this distribution in
** the file LICENSE, as well as License.html. If the license is not
** included with this distribution, you may find a copy at the FSF web
** site at 'www.gnu.org' or 'www.fsf.org', or you may write to the
** Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139 USA.
**
** THIS SOFTWARE IS PROVIDED AS-IS WITHOUT WARRANTY OF ANY KIND,
** NOT EVEN THE IMPLIED WARRANTY OF MERCHANTABILITY. THE AUTHOR
** OF THIS SOFTWARE, ASSUMES _NO_ RESPONSIBILITY FOR ANY
** CONSEQUENCE RESULTING FROM THE USE, MODIFICATION, OR
** REDISTRIBUTION OF THIS SOFTWARE. 
*/

package org.icemail.util;

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


public class StreamUtilities
{
  static public int
  copyStream( InputStream in, OutputStream out ) throws IOException {
    int    result = 0;
    byte[] buf = new byte[ 8 * 1024 ];

    for ( ; ; ) {
      int numRead = in.read( buf );

      if ( numRead == -1 )
        break;

      out.write( buf, 0, numRead );
      result += numRead;
    }

    out.flush();
    return result;
  }

  static public byte[]
  getStreamBytes( InputStream in ) throws IOException {
    ByteArrayOutputStream out = new ByteArrayOutputStream();
    StreamUtilities.copyStream( in, out );
    return out.toByteArray();
  }

}