Android Open Source - TrafficChecker Android Sax R S S Parser

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From Project

Back to project page TrafficChecker.

License

The source code is released under:

GNU General Public License

Java Source Code

/*
 *  This File is licensed under GPL v3.//w  w  w  .jav a 2 s . c om
 *  Copyright (C) 2012 Rene Peinthor.
 *
 *  This file is part of TrafficChecker.
 *
 *  BlueMouse is free software: you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation, either version 3 of the License, or
 *  (at your option) any later version.
 *
 *  TrafficChecker is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with TrafficChecker.  If not, see <http://www.gnu.org/licenses/>.
 */

// RSSParser is used for austria and england

package com.oldsch00l.TrafficChecker;

import java.util.ArrayList;
import java.util.List;

import android.sax.Element;
import android.sax.EndElementListener;
import android.sax.EndTextElementListener;
import android.sax.RootElement;
import android.util.Xml;

import com.google.android.maps.GeoPoint;
import com.oldsch00l.TrafficChecker.Message.SubType;

public class AndroidSaxRSSParser extends BaseFeedParser {
  final static String NSgeorss = "http://www.georss.org/georss";
  boolean mSkipItem = false;
  
    public AndroidSaxRSSParser(String feedUrl) {
        super(feedUrl);
    }

    @Override
    public List<Message> parse() {
        final Message currentMessage = new Message();
        mSkipItem = false;
        RootElement root = new RootElement("rss");
        final List<Message> messages = new ArrayList<Message>();
        Element channel = root.getChild("channel");
        Element item = channel.getChild(ITEM);
        item.setEndElementListener(new EndElementListener(){
            public void end() {
              if( !mSkipItem)
                messages.add(currentMessage.copyAndReset());
              mSkipItem = false;
            }
        });
        item.getChild(TITLE).setEndTextElementListener(new EndTextElementListener(){
            public void end(String title) {
              if( title.equals("Details of incidents will appear here. Click for map") )
              {
                mSkipItem = true;
              }
              else
                currentMessage.setTitle(title);
            }
        });
        item.getChild(LINK).setEndTextElementListener(new EndTextElementListener(){
            public void end(String link) {
              if( !mSkipItem )
              {
                if( link.startsWith("http://www.trafficengland.co.uk/map.aspx") )
                {
                  //parse geo data
                    GeoPoint point = parseGeoPoint(link);
                    if( point != null)
                    {
                        ArrayList<GeoPoint> geoList = new ArrayList<GeoPoint>();
                      geoList.add( point);
                      currentMessage.setGeoDataList( geoList );
                    }
                }
                  currentMessage.setLink(link);
              }
            }
        });
        item.getChild(DESCRIPTION).setEndTextElementListener(new EndTextElementListener(){
            public void end(String body) {
                currentMessage.setDescription(body);
            }
        });
        item.getChild(PUB_DATE).setEndTextElementListener(new EndTextElementListener(){
            public void end(String body) {
              if( !mSkipItem )
                currentMessage.setDate(body);
            }
        });
        item.getChild(GUID).setEndTextElementListener(new EndTextElementListener() {
      public void end(String sGuid) {
        currentMessage.setGUID(sGuid);
      }
    });
        item.getChild(CATEGORY).setEndTextElementListener(new EndTextElementListener() {
      public void end(String sCategory) {
        if( sCategory.equals("roadworks") ) {
          currentMessage.setSubType(SubType.ROADWORKS);
        }
        else if( sCategory.equals("congestion") ) {
          currentMessage.setSubType(SubType.TRAFFIC);
        }
      }
    });
        item.getChild( NSgeorss, GEOPOINT).setEndTextElementListener(new EndTextElementListener(){
          public void end(String point) {
            String[] points = point.split( " ");
             double nPoint = Double.parseDouble( points[0] );
             int latpoint= (int)(nPoint * 1e6);
             nPoint = Double.parseDouble( points[1] );
             int longpoint= (int)(nPoint * 1e6);
            GeoPoint p = new GeoPoint(latpoint, longpoint);
            ArrayList<GeoPoint> pointlist = new ArrayList<GeoPoint>();
            pointlist.add( p);
            currentMessage.setGeoDataList( pointlist);
          }
        });
        item.getChild( NSgeorss, GEOLINE).setEndTextElementListener(new EndTextElementListener(){
          public void end(String point) {
            String [] points = point.split(" ");
            ArrayList<GeoPoint> pointlist = new ArrayList<GeoPoint>();
            for( int i = 0; i < points.length; i += 2)
            {
                 double nPoint = Double.parseDouble( points[i] );
                 int latpoint= (int)(nPoint * 1e6);
                 nPoint = Double.parseDouble( points[i+1] );
                 int longpoint= (int)(nPoint * 1e6);
                   GeoPoint p = new GeoPoint(latpoint, longpoint);
                   pointlist.add( p);
            }
            currentMessage.setGeoDataList( pointlist);
          }
        });
        try {
            Xml.parse(this.getInputStream(), Xml.Encoding.ISO_8859_1, root.getContentHandler());
        } catch (Exception e) {
            throw new RuntimeException(e);
        }
        return messages;
    }
}

Java Source Code List

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