util.java

jxta_src_2.41b jxta 2.41b 最新版源码 from www.jxta.org

/*
 * Copyright (c) 2001 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:
 *
 * 1. Redistributions of source code must retain the above copyright
 * notice, this list of conditions and the following disclaimer.
 *
 * 2. Redistributions 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.
 *
 * 3. The end-user documentation included with the redistribution,
 * if any, must include the following acknowledgment:
 * "This product includes software developed by the
 * Sun Microsystems, Inc. for Project JXTA."
 * Alternately, this acknowledgment may appear in the software itself,
 * if and wherever such third-party acknowledgments normally appear.
 *
 * 4. The names "Sun", "Sun Microsystems, Inc.", "JXTA" and "Project JXTA"
 * must not be used to endorse or promote products derived from this
 * software without prior written permission. For written
 * permission, please contact Project JXTA at http://www.jxta.org.
 *
 * 5. Products derived from this software may not be called "JXTA",
 * nor may "JXTA" appear in their name, without prior written
 * permission of Sun.
 *
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 *====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of Project JXTA. For more
 * information on Project JXTA, please see
 * <http://www.jxta.org/>.
 *
 * This license is based on the BSD license adopted by the Apache Foundation.
 *
 * $Id: Util.java,v 1.5 2003/05/15 19:02:56 bondolo Exp $
 */
package net.jxta.test.util;

import net.jxta.document.Advertisement;
import net.jxta.document.AdvertisementFactory;
import net.jxta.document.MimeMediaType;
import java.io.*;
import java.lang.reflect.*;


class Util {

    static Advertisement getAdvFromFile (File f) 
	throws IOException, InvocationTargetException
    {

	FileInputStream in = null;

	try {
	    in = new FileInputStream (f);

	    return AdvertisementFactory.newAdvertisement
		    (MimeMediaType.XMLUTF8, 
		     in);	
	
	} finally {

	    if (in != null) {
		
		try { 
		    in.close ();
		} catch (IOException e) {

		}
	    }
	}
    }


    static void save (Advertisement adv, File f) throws IOException {

	try {
	    InputStream in =
		adv.getDocument (MimeMediaType.XMLUTF8).getStream();

	    copy (in, f);

	} catch (IOException e) {
	    throw e;
	} catch (Exception e) {
	    // stupid api
	    throw new IOException ("Can't get document from adv: " + 
				   e.getMessage ());
	}

    }

    static void copy (InputStream in, File f) throws IOException {

	FileOutputStream out = null;

	try {
	    out = new FileOutputStream (f);

	    copy (in, out);
	} finally {
	    if (out != null) {
		try {
		    out.close ();
		} catch (IOException e) {

		}
	    }
	}
    }

    static void copy (InputStream in, OutputStream out) throws IOException {
	byte[] buf = new byte[8192];

	int r;

	while ((r = in.read (buf)) > 0)
	    out.write (buf, 0, r);

    }
}