C:/Documents and Settings/student/My Documents/robo_magellan/visual_studio_(system_controller)/system_controller/GPSModule/RmcStrategy.cs

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using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace GpsModule {
        public class RmcStrategy {

                public delegate void updateErrorEventHandler(Exception error);
                public event updateErrorEventHandler updateErrorEvent;

                RmcData _data;
                public RmcData Data {
                        get { return _data; }
                }

                public RmcStrategy() {
                        _data = new RmcData();
                }

                public void parseSentance(string sentence) {
                        try {
                                _data.setSentance(sentence);
                                //1) Time (UTC)
                                sentence = sentence.Substring(sentence.IndexOf(",") + 1, sentence.Length - sentence.IndexOf(",") - 1);
                                string s = sentence.Substring(0, sentence.IndexOf(","));
                                int hour;
                                int.TryParse(s.Substring(0, 2), out hour);
                                int minute;
                                int.TryParse(s.Substring(2, 2), out minute);
                                int second;
                                int.TryParse(s.Substring(4, 2), out second);
                                //2) Status, V = Navigation receiver warning
                                sentence = sentence.Substring(sentence.IndexOf(",") + 1, sentence.Length - sentence.IndexOf(",") - 1);
                                _data.setStatus(sentence.Substring(0, sentence.IndexOf(","))[0]);
                                //3) Latitude
                                sentence = sentence.Substring(sentence.IndexOf(",") + 1, sentence.Length - sentence.IndexOf(",") - 1);
                                _data.setLatitude(sentence.Substring(0, sentence.IndexOf(",")));
                                //4) N or S
                                sentence = sentence.Substring(sentence.IndexOf(",") + 1, sentence.Length - sentence.IndexOf(",") - 1);
                                _data.setNorthOrSouth(sentence.Substring(0, sentence.IndexOf(","))[0]);
                                //5) Longitude
                                sentence = sentence.Substring(sentence.IndexOf(",") + 1, sentence.Length - sentence.IndexOf(",") - 1);
                                _data.setLongitude(sentence.Substring(0, sentence.IndexOf(",")));
                                //6) E or W
                                sentence = sentence.Substring(sentence.IndexOf(",") + 1, sentence.Length - sentence.IndexOf(",") - 1);
                                _data.setEastOrWest(sentence.Substring(0, sentence.IndexOf(","))[0]);
                                //7) Speed over ground, knots
                                sentence = sentence.Substring(sentence.IndexOf(",") + 1, sentence.Length - sentence.IndexOf(",") - 1);
                                _data.setSpeedOverGround(double.Parse(sentence.Substring(0, sentence.IndexOf(","))));
                                //8) Track made good, degrees true
                                sentence = sentence.Substring(sentence.IndexOf(",") + 1, sentence.Length - sentence.IndexOf(",") - 1);
                                _data.setTrackMadeGood(double.Parse(sentence.Substring(0, sentence.IndexOf(","))));
                                //9) Date, ddmmyy
                                sentence = sentence.Substring(sentence.IndexOf(",") + 1, sentence.Length - sentence.IndexOf(",") - 1);
                                s = sentence.Substring(0, sentence.IndexOf(","));
                                int day;
                                int.TryParse(s.Substring(0, 2), out day);
                                int month;
                                int.TryParse(s.Substring(2, 2), out month);
                                int year;
                                int.TryParse(s.Substring(4, 2), out year);
                                year += 2000;
                                //10) Magnetic Variation, degrees
                                sentence = sentence.Substring(sentence.IndexOf(",") + 1, sentence.Length - sentence.IndexOf(",") - 1);
                                //_data.setMagneticVariation(double.Parse(sentence.Substring(0, sentence.IndexOf(","))));
                                //11) E or W
                                sentence = sentence.Substring(sentence.IndexOf(",") + 1, sentence.Length - sentence.IndexOf(",") - 1);
                                _data.setEastOrWestM(sentence.Substring(0, sentence.IndexOf("*"))[0]);
                                //12) Checksum
                                sentence = sentence.Substring(sentence.IndexOf("*") + 1, sentence.Length - sentence.IndexOf("*") - 1);
                                //_checksum = sentence.Substring(0, sentence.Length);
                                _data.setTime(new DateTime(year, month, day, hour, minute, second, DateTimeKind.Utc));
                        } catch (Exception e) {
                                if (updateErrorEvent != null)
                                        updateErrorEvent.Invoke(e);
                        }
                }
        }
}

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