babelfishtranslator.java

用jxse开发的一个p2p通讯软件 有聊天 文件共享 视频3大功能

/*
 * 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.", "RosettaChat", "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 SUN MICROSYSTEMS 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.
 */

package net.jxta.myjxta.misc.rosettachat.translation;

import net.jxta.myjxta.misc.rosettachat.http.Message;
import java.net.*;
import java.io.*;

/**
 * BabelFishTranslator.java
 *
 * @author James Todd [[e-mail]]
 * @version
 */

public class BabelFishTranslator extends AbstractTranslator {

    private URL url = null;

    public BabelFishTranslator() {
		super();

		try {
			this.url = new URL("http://babel.altavista.com/tr");
			//new String("http://bablefish.altavista.com/cgi-bin/translate");
		} catch (MalformedURLException mue) {
			mue.printStackTrace();
		}

		addLocale(ENGLISH);
		addLocale(FRENCH);
		addLocale(GERMAN);
		addLocale(ITALIAN);
		addLocale(PORTUGUESE);
		addLocale(SPANISH);

		// AltaVista's BabelFish translator returns two different types of result
		// pages, depending on the length of the result.  For short phrases,
		// the reponse page contains a "Search the web with these results"
		// button.  We pick out the translation from that page with this
		// filter:
		//
		addFilter("name=\"q\">", "\n</textarea>");

		// Translations of longer phrases can be found using this filter.
		//
		addFilter("<td bgcolor=white>", "\n</td>");

		addMask("**", "**");
    }

    public String translate(String text, String targetLocale)
		throws IllegalArgumentException, IllegalStateException,
			   IOException {

		// Check for empty string.
		if (text.length() == 0)
			return text;

		Message message = dispatch(text, targetLocale);

		return filter(message.getBody()).trim();
    }

    protected URL getURL() {
		return this.url;
    }

    protected String getBody() {
		StringBuffer sb = new StringBuffer();

		sb.append(encode("doit"));
		sb.append("=");
		sb.append(encode("done"));
		sb.append("&");
//		sb.append(encode("BabelFishFrontPage"));
//		sb.append("=");
//		sb.append(encode("no"));
//		sb.append("&");
		sb.append(encode("lp"));
		sb.append("=");
		sb.append(encode(getSourceLocale() + "_" +
									getTargetLocale()));
		sb.append("&");
//		sb.append(encode("bblType"));
        sb.append(encode("tt"));
		sb.append("=");
		sb.append(encode("urltext"));
		//sb.append(encode("url"));
		sb.append("&");
		sb.append(encode("urltext"));
		//sb.append(encode("url"));
		sb.append("=");
		sb.append(encode(getText()));
		//sb.append(encode(getTargetURL()));

		return sb.toString();
    }

    protected void preDispatch(String text, String targetLocale)
		throws IllegalArgumentException, IllegalStateException {
		super.preDispatch(text, targetLocale);

		if (getText() == null) {
			throw new IllegalStateException("bad state");
		}
    }
}