250 lines
7.7 KiB
C#
250 lines
7.7 KiB
C#
using System;
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using System.Collections;
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using System.Diagnostics;
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using System.Text;
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using log4net;
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namespace bsmd.AIS2Service
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{
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internal class AIS_StaticData : AISClass
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{
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#region private members
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private int ais_version;
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private int imoNumber;
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private string callsign;
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private string name;
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private int shiptype;
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private int dimension;
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private int a;
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private int b;
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private int c;
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private int d;
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private int typeofdevice;
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private int etamonth;
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private int etaday;
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private int etahour;
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private int etaminute;
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private DateTime? eta;
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private int maxpresetstaticdraught;
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private string destination;
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private int dte;
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private int spare;
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private static readonly ILog _log = LogManager.GetLogger(typeof(AIS_StaticData));
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#endregion
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#region Properties
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public string Callsign
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{
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get { return this.callsign; }
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}
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public string Name
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{
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get { return this.name; }
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}
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public DateTime? ETA
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{
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get { return this.eta; }
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}
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public string Destination
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{
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get { return this.destination; }
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}
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public int IMONumber
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{
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get { return this.imoNumber; }
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}
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public string DeviceName
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{
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get
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{
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switch (typeofdevice)
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{
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case 1:
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return "GPS";
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case 2:
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return "GLONASS";
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case 3:
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return "Combined GPS/GLONASS";
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case 4:
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return "Loran-C";
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case 5:
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return "Chayka";
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case 6:
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return "Integrated Navigation System";
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case 7:
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return "surveyed";
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case 8:
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return "Galileo";
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default:
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return "undefined";
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}
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}
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}
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public double Draught
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{
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get { return this.maxpresetstaticdraught / 10.0; }
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}
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public int Breadth
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{
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get
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{
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return this.c + this.d;
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}
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}
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public int Length
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{
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get
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{
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return this.a + this.b;
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}
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}
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public int ShipType { get { return this.shiptype; } }
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public int Dimension { get { return this.dimension; } }
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public int TypeOfDevice { get { return this.typeofdevice; } }
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public int DTE { get { return this.dte; } }
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public int Spare { get { return this.spare; } }
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public string DBETA
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{
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get
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{
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if (this.eta.HasValue)
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{
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return this.eta.Value.ToString("yyyy-MM-ddTHH:mm:ss.000Z");
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}
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else
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{
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return "";
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}
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}
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}
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public int Version { get { return ais_version; } }
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#endregion
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#region abstract method implementation
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protected override Status Decode()
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{
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BitArray bits = DecodeBinary(_data);
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Status result = Status.OK;
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if (bits.Count < 424)
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{
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_log.WarnFormat("AISStaticData truncated: {0}/424", bits.Count);
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result = Status.PARSE_ERROR;
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}
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else
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{
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try
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{
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int type = GetInt(bits, 0, 5);
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if (type != 5)
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{
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result = Status.ILLEGAL_ARGUMENT;
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}
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else
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{
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_mmsi = GetInt(bits, 6, 37);
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this.ais_version = GetInt(bits, 38, 39);
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this.imoNumber = GetInt(bits, 40, 69);
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StringBuilder sb_callsign = new StringBuilder(7);
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for (int i = 0; i < 7; i++)
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{
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int cval = GetInt(bits, 70 + (6 * i), 75 + (6 * i));
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char ch = GetAISChar(cval);
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if (ch == '@') ch = ' ';
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sb_callsign.Append(ch);
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}
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this.callsign = sb_callsign.ToString().Trim();
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StringBuilder sb_name = new StringBuilder(20);
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for (int i = 0; i < 20; i++)
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{
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int cval = GetInt(bits, 112 + (6 * i), 117 + (6 * i));
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char ch = GetAISChar(cval);
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if (ch == '@') ch = ' ';
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sb_name.Append(ch);
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}
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this.name = sb_name.ToString().Trim();
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this.shiptype = GetInt(bits, 232, 239);
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this.dimension = GetInt(bits, 240, 269);
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this.a = GetInt(bits, 240, 248);
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this.b = GetInt(bits, 249, 257);
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this.c = GetInt(bits, 258, 263);
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this.d = GetInt(bits, 264, 269);
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this.typeofdevice = GetInt(bits, 270, 273);
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this.etamonth = GetInt(bits, 274, 277);
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this.etaday = GetInt(bits, 278, 282);
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this.etahour = GetInt(bits, 283, 287);
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this.etaminute = GetInt(bits, 288, 293);
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try
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{
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if ((this.etahour < 24) && (this.etaday > 0) && (this.etaminute < 60) && (this.etamonth > 0))
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{
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this.eta = new DateTime(DateTime.Now.Year, this.etamonth, this.etaday, this.etahour, this.etaminute, 0);
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}
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}
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catch (Exception e)
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{
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_log.WarnFormat("ETA timestamp creation failed: {0}", e.Message);
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}
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this.maxpresetstaticdraught = GetInt(bits, 294, 301);
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StringBuilder sb_destination = new StringBuilder(20);
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for (int i = 0; i < 20; i++)
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{
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int cval = GetInt(bits, 302 + (6 * i), 307 + (6 * i));
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char ch = GetAISChar(cval);
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if (ch == '@') break; //ch = ' '; // alles nach einem @ nicht mehr beachten
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sb_destination.Append(ch);
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}
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this.destination = sb_destination.ToString().Trim();
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this.dte = GetInt(bits, 422, 422);
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this.spare = GetInt(bits, 423, 423);
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}
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}
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catch (Exception e)
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{
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_log.WarnFormat("Error decoding AIS static data: {0}", e.Message);
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result = Status.PARSE_ERROR;
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}
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}
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return result;
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}
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public override string ToString()
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{
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return string.Format("{0} - {1} [{2}]", base.ToString(), this.MMSI, this.Name);
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}
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#endregion
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}
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}
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