LogReader.cs

using System.Collections.Generic;
using System.IO;

namespace WtLogging
{
    public static class LogReader
    {
        public static List<string> IdToName = new List<string>();
        public static Dictionary<string, List<float>> LogTable = new Dictionary<string, List<float>>();

        public static string CraftName = "";
        public static int LogEntries = 0;

        public static void ReadLog(string filename)
        {
            IdToName.Clear();
            LogTable.Clear();
            CraftName = "";
            LogEntries = 0;

            using (var fs = new FileStream(filename, FileMode.Open, FileAccess.Read))
            using (var reader = new BinaryReader(fs))
            {
                var logProtocolVersion = reader.ReadInt32();
                if (logProtocolVersion != LoggingProperties.LogProtocolVersion)
                    throw new InvalidDataException("This log data is not supported by this version of LogView!");

                CraftName = reader.ReadString();
                var headerLen = reader.ReadInt32();
                for (var i = 0; i < headerLen; ++i)
                {
                    var paramName = reader.ReadString();
                    IdToName.Add(paramName);
                    LogTable[paramName] = new List<float>();
                }

                while (fs.Position < fs.Length)
                {
                    var recordLen = reader.ReadInt32();

                    foreach (var item in LogTable)
                    {
                        item.Value.Add(float.NaN);
                    }

                    for (var i = 0; i < recordLen; ++i)
                    {
                        var paramId = reader.ReadByte();
                        var paramVal = reader.ReadSingle();
                        var paramName = IdToName[paramId];

                        LogTable[paramName][LogEntries] = paramVal;
                    }

                    LogEntries++;
                }
            }
        }
    }
}