xcal.java

Java p2p程序设计2002年版

/*
 * XCal.java
 *
 * Created on November 26, 2001, 11:17 PM
 */

package com.sams.jxta.xcal;
// JDOM interface
import org.jdom.*;
import org.jdom.output.*;
import org.jdom.input.*;

import java.util.Date;
import java.text.SimpleDateFormat;


import javax.xml.parsers.*;
import org.xml.sax.*;
import org.w3c.dom.*;
import org.xml.sax.SAXException;

import java.io.*;
import java.net.*;
import java.lang.reflect.*;
import java.util.*;
import net.jxta.endpoint.Message;
import net.jxta.endpoint.MessageElement;

import net.jxta.peer.*;

/**
 *
 * @author  Administrator
 */
public class XCal {
    protected SimpleDateFormat format   = new SimpleDateFormat("yyyyMMdd'T'kkmmss'Z'");
    static final String supporedVersion="2.0";
    
    String versionAttr = "version";
    String valueOfXML = null;
    boolean changed = true;
    String method ="PUBLISH";
    public static final String iCalTag = "iCalendar";
    public static final String vCalTag = "vCalendar";
    public static final String vcardURITag = "x-JXTA-URI";
    public static final String veventTag = "vevent";// Encapsulates event data
    public static final String uidTag = "uid";
    public static final String organizerTag = "organizer";
    public static final String dtstampTag = "dtstamp";
    public static final String summaryTag = "summary";
    public static final String locationTag = "location";
    public static final String X_VCARD_URI_Tag = "X-VCARD-URI";
    public static final String dtstartTag = "dtstart";
    public static final String dtendTag = "dtend";
    public static final String categoriesTag = "categories";
    public static final String itemTag = "item";
    public static final String attendeeTag = "attendee";
    public static final String noteTag = "note";
    protected String uid="";
    protected String vCardURI="";// URI of a VCARD
    protected String organizer="";
    
    protected String dtstamp=format.format( new Date(System.currentTimeMillis()));
    protected String summary="test date";
    protected String location="";
    protected String vCardAddrType="";// type of address in VCARD "HOME", "WORK","" (unspecified returns the first addr)
    protected String dtstart="";
    protected String dtend="";
    protected ArrayList category ;
    // The following are for each attendie
    //protected String role[]={"CHAIR"};//REQ-PART
    //protected String isRSVP[]={"TRUE"};
    protected ArrayList attendee=null;
    protected String note="";
    /** Creates new XCal */
    public XCal() {
        category = new ArrayList();
        category.add("Meeting");
    }
    public XCal(String message) {
        processMessage(message);
    }
    public String toString(){
        return organizer+", "+summary+" at:"+location+" "+dtstart+"-"+dtend+" ["+dtstamp+"]";
    }
    /*
    public XCal(Message message) {
        try{
            processMessage(message);
        }catch(java.io.IOException ioe){
            ioe.printStackTrace();
        }catch( java.lang.reflect.InvocationTargetException ite){
            ite.printStackTrace();
        }
    }
     */
    public String toXML(){
        if (changed){
            // Note that many compilers covert this into a series of appends
            // to a StringBuffer, thus making this effiecient when written this way.
            valueOfXML =  "<?xml version=\"1.0\" encoding=\"UTF-8\"?> \n"
            //+"<!DOCTYPE iCalendar PUBLIC \"-//IETF//DTD XCAL//iCalendar XML//EN\" \"http:////www.ietf.org//internet-drafts//draft-ietf-calsch-many-xcal-00.txt \" > \n"
            +"<icalendar> \n"
            +"<vcalendar method=\""+method+"\" version=\""+supporedVersion+"\" prodid=\"-//HandGen//NONSGML vGen v1.0//EN\"> \n"
            +"<vevent> \n"
            +"  <uid>"+uid+"</uid> \n"
            +"  <dtstamp>"+dtstamp+"</dtstamp> \n"
            +"  <organizer>"+organizer+"</organizer> \n"
            +"  <summary>"+summary+"</summary> \n"
            +"  <location>"+location+"</location> \n"
            +"  <X-VCARD URI=\""+vCardURI+"\" addrType=\""+vCardAddrType+"\"/> \n"// location via a VCard
            +"  <dtstart>"+dtstart+"</dtstart> \n"
            +"  <dtend>"+dtend+"</dtend> \n"
            +"  <note>"+note+"</note> \n";
            if(category != null){
                
                valueOfXML+="  <categories> \n";
                for(int i=0;i<category.size();i++){
                    String cat = (String)category.get(i);
                    valueOfXML+="    <item>"+cat+"</item> \n";
                }
                
                valueOfXML+="  </categories> \n";
            }
            if(attendee != null){
                
                for(int i=0;i<attendee.size();i++){
                    Attendee person = (Attendee)attendee. get(i);
                    valueOfXML+="  <attendee role=\""+person.getRole()+"\" rsvp=\""+person.getRsvp()+"\">"+ person.getAttendee() +"</attendee> \n";
                }
            }
            valueOfXML+="</vevent> \n"
            +"</vcalendar> \n"
            +"</icalendar> \n";
/* TBD
<class>CONFIDENTIAL</class>
<transp>TRANSPARENT</transp>
<categories>
<item>Anniversary</item>
<item>Personal</item>
<item>Special Occasion</item>
</categories>
<rrule>FREQ=YEARLY</rrule>
 */
            
            
        }// if changed
        return valueOfXML;
    }
    public org.jdom.Document toJDOM(){
        try{
            ByteArrayInputStream in = new ByteArrayInputStream(toXML().getBytes());
            SAXBuilder builder = new SAXBuilder();
            org.jdom.Document doc = builder.build(in);
            return doc;
        }catch(JDOMException je){
            je.printStackTrace();
            return null;
        }
    }
    /*
    public void processMessage(Message msg) throws IOException, InvocationTargetException {
        try{
            DocumentBuilderFactory docBuilderFactory = DocumentBuilderFactory.newInstance();
            DocumentBuilder builder = docBuilderFactory.newDocumentBuilder();
     
            MessageElement element = msg.getElement(iCalTag);
            org.w3c.dom.Document  responseDoc = builder.parse(element.getStream());
            org.w3c.dom.Element   root        = responseDoc.getDocumentElement();
            processMessage(root);
        }catch(java.io.IOException ioe){
            ioe.printStackTrace();
        }catch(org.xml.sax.SAXParseException spe){
            System.out.println();
            System.out.println("line:"+spe.getLineNumber());
            System.out.println("Column:"+spe.getColumnNumber());
            System.out.println("PublicId:"+spe.getPublicId() );
            System.out.println("SystemId:"+spe.getSystemId() );
            System.out.println(msg);
            System.out.println("-------------------------------------------------------");
            spe.printStackTrace(System.out);
        }catch(org.xml.sax.SAXException se){
            se.printStackTrace();
        }catch(javax.xml.parsers.ParserConfigurationException pce){
            pce.printStackTrace();
            changed = true;
        }
    }*/
    public void processMessage(String msg) {
        try{
            //DocumentBuilderFactory docBuilderFactory = DocumentBuilderFactory.newInstance();
            //DocumentBuilder builder = docBuilderFactory.newDocumentBuilder();
            
            //MessageElement element = msg.getElement(vCardTag);
            //Document  responseDoc = builder.parse(element.getStream());
            ByteArrayInputStream in = new ByteArrayInputStream(msg.getBytes());
            org.jdom.input.SAXBuilder builder = new org.jdom.input.SAXBuilder();
            
            org.jdom.Document doc = builder.build(in);
        /*
         System.err.println("______________________________________________");
        XMLOutputter outputter = new XMLOutputter("   ",true);
        try{
        outputter.output(doc, System.err);
        }catch(java.io.IOException ioe){
        }
        System.err.println("______________________________________________");
         */   
            org.jdom.Element element = doc.getRootElement();
            if (element.getName().equals("icalendar")){
                element = element.getChild("vcalendar").getChild("vevent");
            }else if (element.getName().equals("vcalendar")){
                element = element.getChild("vevent");
            }
            processMessage(element);
            
        }catch(org.jdom.JDOMException ioe){
            ioe.printStackTrace();
            
            
        }
    }
    
    public void processMessageX(org.w3c.dom.Element   root) {
        
        NodeList  vNodes    = root.getChildNodes();
        for (int h = 0;  h < vNodes.getLength();  h++) {
            Node vNode  = vNodes.item(h);
                /*
                String version = getText(vNode.getAttributeNode( versionAttr ));
                if(supporedVersion.equals(version)&& vCalTag.equals(vNode.getNodeName())){
                    System.out.println("Supported Version!");
                }else{
                    System.out.println("##### Error Unsupported vCard document version:"+version);
                    continue;
                }
                 */
            Enumeration enum= null;
            org.w3c.dom.Element tag,tag1,tag2,tag3 =null;
            
            NodeList  hitNodes    = vNode.getChildNodes();
            for (int i = 0;  i < hitNodes.getLength();  i++) {
                Node     hitNode  = hitNodes.item(i);
                
                if (hitNode.getNodeName().equals(veventTag)){
                    NodeList  childNodesList    = hitNode.getChildNodes();
                    for (int j = 0;  j < childNodesList.getLength();  j++) {
                        Node subNode  = childNodesList.item(j);
                        if (organizerTag.equals(subNode.getNodeName())){
                            organizer = getText(subNode);
                        }else if (uidTag.equals(subNode.getNodeName())){
                            uid = getText(subNode);
                        }else if (dtstampTag.equals(subNode.getNodeName())){
                            dtstamp = getText(subNode);
                        }else if (summaryTag.equals(subNode.getNodeName())){
                            summary = getText(subNode);
                        }else if (locationTag.equals(subNode.getNodeName())){
                            location = getText(subNode);
                        }else if (dtstartTag.equals(subNode.getNodeName())){
                            dtstart = getText(subNode);
                        }else if (dtendTag.equals(subNode.getNodeName())){
                            dtend = getText(subNode);
                            //  }else if (categoriesTag.equals(subNode.getNodeName())){
                            //     categories = getText(subNode);
                        }else if (attendeeTag.equals(subNode.getNodeName())){
                            NodeList  attendeeNodesList    = subNode.getChildNodes();
                            for (int k = 0;  k < attendeeNodesList.getLength();  k++) {
                                Node attendeeNode  = attendeeNodesList.item(k);
                                //attendee[0] = getText(attendeeNode);
                            }
                        }else if (noteTag.equals(subNode.getNodeName())){
                            note = getText(subNode);
                        }
                    }
                }else if (organizerTag.equals(hitNode.getNodeName())){
                    organizer = getText(hitNode);
                }
            }