154 lines
4.7 KiB
C#
154 lines
4.7 KiB
C#
using System;
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using System.Collections;
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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_ClassBStatic : AISClass
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{
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#region private members
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private int repeatIndicator;
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private int partNumber;
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private string name;
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private int shipType;
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private string vendorId;
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private string callsign;
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private int dimension;
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private int spare;
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private static readonly ILog _log = LogManager.GetLogger(typeof(AIS_ClassBStatic));
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#endregion
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#region Properties
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public bool IsPartA
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{
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get { return this.partNumber == 0; }
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}
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public bool IsPartB
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{
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get { return this.partNumber == 1; }
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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 string VendorId
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{
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get { return this.vendorId; }
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}
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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 int ShipTypeVal
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{
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get { return this.shipType; }
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}
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public int Dimension { get { return this.dimension; } }
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public int Spare { get { return this.spare; } }
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public int? UnitModelCode {get; private set;}
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public int? Serial { get; private set; }
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public int Length { get; private set; }
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public int Breadth { get; private set; }
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public int? MothershipMMSI { get; private set; }
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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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try
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{
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int type = GetInt(bits, 0, 5);
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if (type != 24)
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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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this.repeatIndicator = GetInt(bits, 6, 7);
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_mmsi = GetInt(bits, 8, 37);
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this.partNumber = GetInt(bits, 38, 39);
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if (this.IsPartA)
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{
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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, 40 + (6 * i), 45 + (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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}
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else
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{
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this.shipType = GetInt(bits, 40, 47);
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StringBuilder sb_vendor = new StringBuilder(7);
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for (int i = 0; i < 3; i++)
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{
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int cval = GetInt(bits, 48 + (6 * i), 53 + (6 * i));
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char ch = GetAISChar(cval);
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if (ch == '@') ch = ' ';
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sb_vendor.Append(ch);
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}
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this.vendorId = sb_vendor.ToString().Trim();
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this.UnitModelCode = GetInt(bits, 66, 69);
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this.Serial = GetInt(bits, 70, 89);
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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, 90 + (6 * i), 95 + (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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int toBow = GetInt(bits, 132, 140);
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int toStern = GetInt(bits, 141, 149);
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this.Length = toBow + toStern;
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int toPort = GetInt(bits, 150, 155);
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int toStarboard = GetInt(bits, 156, 161);
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this.Breadth = toPort + toStarboard;
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this.dimension = GetInt(bits, 141, 161);
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this.spare = GetInt(bits, 162, 167);
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}
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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 class B static data: {0}", e.Message);
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result = Status.PARSE_ERROR;
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}
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return result;
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}
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#endregion
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}
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}
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