Yubeshi/YumaAlmanacReader.cs

   1 /*\r
   2  *      Yubeshi GPS Parser\r
   3  *\r
   4  *      This software is distributed under a zlib-style license.\r
   5  *      See license.txt for more information.\r
   6  */\r
   7 \r
   8 using System;\r
   9 using System.Collections.Generic;\r
  10 using System.Text;\r
  11 using System.Text.RegularExpressions;\r
  12 using System.IO;\r
  13 \r
  14 namespace Yubeshi\r
  15 {\r
  16     public class YumaAlmanacReader\r
  17     {\r
  18         #region type definitions\r
  19         private delegate void AlmanacSetter(Almanac almanac, string value);\r
  20         #endregion\r
  21 \r
  22         #region fields\r
  23         private string filePath;\r
  24         private static readonly Regex yuma = \r
  25             new Regex(@"^([\w\s\(\)/]+):\s*([\d.E+-]+)$", \r
  26                                                     RegexOptions.Compiled);\r
  27         \r
  28         private static readonly Dictionary<string, AlmanacSetter> setters;\r
  29         #endregion\r
  30 \r
  31 \r
  32         #region constructors\r
  33         public YumaAlmanacReader(string filePath)\r
  34         {\r
  35             this.filePath = filePath;\r
  36         }\r
  37 \r
  38         static YumaAlmanacReader()\r
  39         {\r
  40             setters = new Dictionary<string,AlmanacSetter>();\r
  41             setters["ID"] = delegate(Almanac a, string v)\r
  42                 {\r
  43                     a.ID = Int32.Parse(v);  \r
  44                 };\r
  45             setters["Health"] = delegate(Almanac a, string v)\r
  46                 {\r
  47                     a.Health = (Almanac.HealthIndication)Int16.Parse(v);\r
  48                 };\r
  49             setters["Eccentricity"] = delegate(Almanac a, string v)\r
  50                 {\r
  51                     a.Eccentricity = Double.Parse(v);\r
  52                 };\r
  53             setters["Time of Applicability(s)"] = delegate(Almanac a, string v)\r
  54                 {\r
  55                     a.TimeOfApplicability = Decimal.Parse(v);\r
  56                 };\r
  57             setters["Orbital Inclination(rad)"] = delegate(Almanac a, string v)\r
  58                 {\r
  59                     a.OrbitalInclination = Degree.FromRadian(Double.Parse(v));\r
  60                 };\r
  61             setters["Rate of Right Ascen(r/s)"] = delegate(Almanac a, string v)\r
  62                 {\r
  63                     a.RateOfRightAscen = Double.Parse(v);\r
  64                 };\r
  65             setters["SQRT(A)  (m 1/2)"] = delegate(Almanac a, string v)\r
  66                 {\r
  67                     a.SqrtA = Double.Parse(v);\r
  68                 };\r
  69             setters["Right Ascen at Week(rad)"] = delegate(Almanac a, string v)\r
  70                 {\r
  71                     a.RightAscenAtWeek = Degree.FromRadian(Double.Parse(v));\r
  72                 };\r
  73             setters["Argument of Perigee(rad)"] = delegate(Almanac a, string v)\r
  74                 {\r
  75                     a.ArgumentOfPerigee = Degree.FromRadian(Double.Parse(v));\r
  76                 };\r
  77             setters["Mean Anom(rad)"] = delegate(Almanac a, string v)\r
  78                 {\r
  79                     a.MeanAnom = Degree.FromRadian(Double.Parse(v));\r
  80                 };\r
  81             setters["Af0(s)"] = delegate(Almanac a, string v)\r
  82                 {\r
  83                     a.Af0 = Double.Parse(v);\r
  84                 };\r
  85             setters["Af1(s/s)"] = delegate(Almanac a, string v)\r
  86                 {\r
  87                     a.Af1 = Double.Parse(v);\r
  88                 };\r
  89             setters["week"] = delegate(Almanac a, string v)\r
  90             {\r
  91                 a.Week = Int32.Parse(v);\r
  92             };\r
  93         }\r
  94         #endregion\r
  95 \r
  96         public Almanac[] Read()\r
  97         {\r
  98             Almanac[] list = null;\r
  99             try\r
 100             {\r
 101                 using (Stream s = new FileStream(filePath,\r
 102                             FileMode.Open, FileAccess.Read, FileShare.Read))\r
 103                 {\r
 104                     using (StreamReader sr = new StreamReader(s))\r
 105                     {\r
 106                         list = Parse(sr);\r
 107                     }\r
 108                 }\r
 109             }\r
 110             catch\r
 111             {\r
 112                 throw;\r
 113             }\r
 114             return list;\r
 115         }\r
 116 \r
 117         private Almanac[] Parse(StreamReader sr)\r
 118         {\r
 119             List<Almanac> list = new List<Almanac>();\r
 120             string line = null;\r
 121             Almanac a = null;\r
 122             while ((line = sr.ReadLine()) != null)\r
 123             {\r
 124                 MatchCollection m = yuma.Matches(line);\r
 125                 if (m.Count == 1)\r
 126                 {\r
 127                     string key = m[0].Groups[1].Value;\r
 128                     if (setters.ContainsKey(key))\r
 129                     {\r
 130                         if (a == null)\r
 131                         {\r
 132                             a = new Almanac();\r
 133                         }\r
 134                         setters[key](a, m[0].Groups[2].Value);\r
 135                     }\r
 136                     else\r
 137                     {\r
 138                         a = null;\r
 139                     }\r
 140                 }\r
 141                 else if(a != null)\r
 142                 {\r
 143                     list.Add(a);\r
 144                     a = null;\r
 145                 }\r
 146 \r
 147             }\r
 148             if (a != null)\r
 149             {\r
 150                 list.Add(a);\r
 151             }\r
 152             return list.ToArray();\r
 153         }\r
 154 \r
 155     }\r
 156 }\r