added logging system

GZ.cs

@@ -13,6 +13,8 @@ namespace TaikoSoundEditor
     {
         public static string DecompressString(string gzPath)
         {
+            Logger.Info("GZ Decompressing string");
+
             using FileStream originalFileStream = File.OpenRead(gzPath);
             using GZipStream decompressionStream = new GZipStream(originalFileStream, CompressionMode.Decompress);
             using StreamReader reader = new StreamReader(decompressionStream);
@@ -21,6 +23,8 @@ namespace TaikoSoundEditor
 
         public static byte[] DecompressBytes(string gzPath)
         {
+            Logger.Info("GZ Decompressing bytes");
+
             using FileStream originalFileStream = File.OpenRead(gzPath);
             using GZipStream decompressionStream = new GZipStream(originalFileStream, CompressionMode.Decompress);
             using MemoryStream ms = new MemoryStream();
@@ -30,6 +34,8 @@ namespace TaikoSoundEditor
 
         public static byte[] CompressToBytes(string content)
         {
+            Logger.Info("GZ Compressing bytes");
+
             using var stream = new MemoryStream();
             using var writer = new StreamWriter(stream);
             writer.Write(content);
@@ -44,6 +50,8 @@ namespace TaikoSoundEditor
 
         public static string CompressToFile(string fileName, string content)
         {
+            Logger.Info("GZ Compressing file");
+
             var tmp = "~ztmp";
             if (!Directory.Exists(tmp))
                 Directory.CreateDirectory(tmp);

IDSP.cs

@@ -11,11 +11,13 @@ namespace TaikoSoundEditor
     {
         public static void WavToIdsp(string source, string dest)
         {
+            Logger.Info("Converting WAV to IDSP");            
+
             source = Path.GetFullPath(source);
             dest = Path.GetFullPath(dest);
 
-            Debug.WriteLine(source);
+            Logger.Info($"source = {source}");
-            Debug.WriteLine(dest);
+            Logger.Info($"dest = {dest}");
 
             var p = new Process();
             p.StartInfo.FileName = Path.GetFullPath(@"Tools\VGAudio\VGAudioCli.exe");

Json.cs

@@ -9,11 +9,13 @@ namespace TaikoSoundEditor
     {
         public static T Deserialize<T>(string json)
         {
+            Logger.Info($"Deserializing {typeof(T)} ({json.Length})");
             return JsonSerializer.Deserialize<T>(json);
         }
 
         public static string Serialize<T>(T item)
         {
+            Logger.Info($"Serializing {typeof(T)}:\n{item}");
             return JsonSerializer.Serialize(item, new JsonSerializerOptions
             {
                 Encoder = JavaScriptEncoder.Create(UnicodeRanges.All),

Logger.cs

@@ -0,0 +1,61 @@
+using System.Collections;
+
+namespace TaikoSoundEditor
+{
+    internal static class Logger
+    {
+        static string LogFile;
+
+        static Logger()
+        {
+            if (!Directory.Exists("logs"))
+                Directory.CreateDirectory("logs");
+            LogFile = $"tse_{DateTime.Now:yyyy-MM-dd_hh-mm-ss}.log";
+            LogFile = Path.Combine("logs", LogFile);
+
+            Info("Session started");
+        }
+
+        private static void Write(string message)
+        {
+            try
+            {
+                File.AppendAllText(LogFile, message);
+            }
+            catch (Exception e)
+            {
+                MessageBox.Show("Failed to write log file:\n" + e.Message);
+            }
+        }
+
+        private static void Write(string type,  string message)
+        {
+            Write($"[{type} {DateTime.Now:yyyy-MM-dd_hh-mm-ss}]{message}\n");            
+        }
+
+        public static void Info(string message)=> Write("INFO", message);
+        public static void Warning(string message)=> Write("WARN", message);
+        public static void Error(string message)=> Write("ERROR", message);
+        public static void Error(Exception e)
+        {
+            Error($"Exception raised:\n{e.Message}\n{e.StackTrace}\nFrom {e.Source}\nData:\n");
+            foreach(DictionaryEntry kv in e.Data)
+            {
+                Write($"{kv.Key} = {kv.Value}");
+            }
+            Write("\n\n");
+            if (e.GetBaseException() != null && e.GetBaseException() != e)
+            {
+                Error(e.GetBaseException());
+                Write("Base exception:");
+            }
+            if(e.InnerException!=null)
+            {
+                Write("Inner exception:");
+                Error(e.InnerException);
+            }                         
+        }        
+
+
+    }
+}

MainForm.cs

@@ -1,5 +1,6 @@
 using System.ComponentModel;
 using System.Diagnostics;
+using System.IO;
 using System.Text.RegularExpressions;
 using System.Threading.Tasks.Dataflow;
 using TaikoSoundEditor.Data;
@@ -20,6 +21,12 @@ namespace TaikoSoundEditor
             AddedMusicBinding = new BindingSource();
             AddedMusicBinding.DataSource = AddedMusic;
             NewSoundsBox.DataSource = AddedMusicBinding;
+            TabControl.SelectedIndexChanged += TabControl_SelectedIndexChanged;
+        }
+
+        private void TabControl_SelectedIndexChanged(object sender, EventArgs e)
+        {
+            Logger.Info($"Commuted to tab {TabControl.SelectedIndex}");
         }
 
         private string MusicAttributePath { get; set; }
@@ -38,26 +45,31 @@ namespace TaikoSoundEditor
 
         private void WordListPathSelector_PathChanged(object sender, EventArgs args)
         {
+            Logger.Info($"WordListPathSelector_PathChanged : {WordListPathSelector.Path}");
             WordListPath = WordListPathSelector.Path;
         }
 
         private void MusicInfoPathSelector_PathChanged(object sender, EventArgs args)
         {
+            Logger.Info($"MusicInfoPathSelector_PathChanged : {MusicInfoPathSelector.Path}");
             MusicInfoPath = MusicInfoPathSelector.Path;
         }
 
         private void MusicOrderPathSelector_PathChanged(object sender, EventArgs args)
         {
+            Logger.Info($"MusicOrderPathSelector_PathChanged : {MusicOrderPathSelector.Path}");
             MusicOrderPath = MusicOrderPathSelector.Path;
         }
 
         private void MusicAttributePathSelector_PathChanged(object sender, EventArgs args)
         {
+            Logger.Info($"MusicAttributePathSelector_PathChanged : {MusicAttributePathSelector.Path}");
             MusicAttributePath = MusicAttributePathSelector.Path;
         }
 
         private void DirSelector_PathChanged(object sender, EventArgs args) => RunGuard(() =>
         {
+            Logger.Info($"MusicAttributePathSelector_PathChanged : {DirSelector.Path}");
             var dir = DirSelector.Path;
             var files = new string[] { "music_attribute.bin", "music_order.bin", "musicinfo.bin", "wordlist.bin" };
             var sels = new PathSelector[] { MusicAttributePathSelector, MusicOrderPathSelector, MusicInfoPathSelector, WordListPathSelector };
@@ -77,12 +89,15 @@ namespace TaikoSoundEditor
 
             if (NotFoundFiles.Count > 0)
             {
+                Logger.Warning("The following files could not be found:\n\n" + String.Join("\n", NotFoundFiles));
                 MessageBox.Show("The following files could not be found:\n\n" + String.Join("\n", NotFoundFiles));
             }
         });        
 
         private void OkButton_Click(object sender, EventArgs e) => RunGuard(() =>        
         {
+            Logger.Info($"Clicked 'Looks good' ");
+
             try
             {
                 MusicAttributes = Json.Deserialize<MusicAttributes>(GZ.DecompressString(MusicAttributePath));
@@ -116,6 +131,7 @@ namespace TaikoSoundEditor
                 throw new Exception($"Failed to parse\n{WordListPath}\nReason:\n{ex.InnerException}");
             }
 
+            Logger.Info($"Setting LoadedMusicBox DataSource");
             LoadedMusicBox.DataSource = MusicInfos.Items;            
             TabControl.SelectedIndex = 1;
 
@@ -139,12 +155,14 @@ namespace TaikoSoundEditor
         public static void Error(Exception e)
         {
             MessageBox.Show(e.Message, "An error has occured");
+            Logger.Error(e);
         }
 
         #region Editor
 
         private void GridsShow(MusicInfo item)
         {
+            Logger.Info($"Showing properties for MusicInfo: {item}");
             MusicInfoGrid.SelectedObject = item;
             MusicAttributesGrid.SelectedObject = MusicAttributes.GetByUniqueId(item.UniqueId);
             MusicOrderGrid.SelectedObject = MusicOrders.GetByUniqueId(item.UniqueId);
@@ -157,6 +175,7 @@ namespace TaikoSoundEditor
         private void LoadedMusicBox_SelectedIndexChanged(object sender, EventArgs e)
         {
             var item = LoadedMusicBox.SelectedItem as MusicInfo;
+            Logger.Info($"Selection Changed MusicItem: {item}");
             GridsShow(item);   
         }
 
@@ -168,6 +187,8 @@ namespace TaikoSoundEditor
         private void NewSoundsBox_SelectedIndexChanged(object sender, EventArgs e)
         {
             var item = NewSoundsBox.SelectedItem as NewSongData;
+            Logger.Info($"Selection Changed NewSongData: {item}");
+            Logger.Info($"Showing properties for NewSongData: {item}");
             MusicInfoGrid.SelectedObject = item?.MusicInfo;
             MusicAttributesGrid.SelectedObject = item?.MusicAttribute;
             MusicOrderGrid.SelectedObject = item?.MusicOrder;
@@ -180,6 +201,7 @@ namespace TaikoSoundEditor
 
         private void CreateButton_Click(object sender, EventArgs e)
         {
+            Logger.Info($"Clicked Create Button");
             AudioFileSelector.Path = "";
             TJASelector.Path = "";
             SongNameBox.Text = "(6 characters id...)";
@@ -188,35 +210,50 @@ namespace TaikoSoundEditor
 
         private void CreateBackButton_Click(object sender, EventArgs e)
         {
+            Logger.Info($"Clicked Back Button");
             TabControl.SelectedIndex = 1;
         }
 
         
+        private void WarnWithBox(string message)
+        {
+            Logger.Warning("Displayed: " + message);
+            MessageBox.Show(message);
+        }
 
         private void CreateOkButton_Click(object sender, EventArgs e) => RunGuard(() =>
         {
+            Logger.Info($"Clicked Ok Button");
             FeedbackBox.Clear();
             var audioFilePath = AudioFileSelector.Path;
             var tjaPath = TJASelector.Path;
             var songName = SongNameBox.Text;
             var id = Math.Max(MusicAttributes.GetNewId(), AddedMusic.Count == 0 ? 0 : AddedMusic.Max(_ => _.UniqueId) + 1);
 
-            if(songName==null || songName.Length!=6)
+            Logger.Info($"Audio File = {audioFilePath}");
+            Logger.Info($"TJA File = {tjaPath}");
+            Logger.Info($"Song Name (Id) = {songName}");
+            Logger.Info($"UniqueId = {id}");
+
+            if (songName==null || songName.Length!=6)
             {
-                MessageBox.Show("Invalid song name.");
+                WarnWithBox("Invalid song name.");                
                 return;
             }
 
             if (!MusicAttributes.IsValidSongId(songName) || AddedMusic.Any(m => m.Id == songName))
             {
-                MessageBox.Show("Duplicate song name. Choose another");
+                WarnWithBox("Duplicate song name. Choose another");
                 return;
             }
 
             FeedbackBox.AppendText("Creating temp dir\r\n");
+            
             CreateTmpDir();
 
             FeedbackBox.AppendText("Parsing TJA\r\n");
+
+            Logger.Info("Parsing TJA");
             var tja = new TJA(File.ReadAllLines(tjaPath));
             File.WriteAllText("tja.txt", tja.ToString());
 
@@ -228,6 +265,8 @@ namespace TaikoSoundEditor
             FeedbackBox.AppendText("Converting to wav\r\n");            
             WAV.ConvertToWav(audioFilePath, $@".-tmp\{songName}.wav", seconds);
 
+
+            Logger.Info("Adjusting seconds of silence");
             tja.Headers.Offset -= seconds;
             tja.Headers.DemoStart += seconds;
 
@@ -242,7 +281,7 @@ namespace TaikoSoundEditor
                 return l;
             }).ToArray();
 
-
+            Logger.Info("Creating temporary tja");
             var newTja = @$".-tmp\{Path.GetFileName(tjaPath)}";
             File.WriteAllLines(newTja, text);
 
@@ -251,6 +290,7 @@ namespace TaikoSoundEditor
 
             var tja_binaries = TJA.RunTja2Fumen(newTja);
 
+            Logger.Info("Creating new sonud data");
             FeedbackBox.AppendText("Creating sound data\r\n");
             NewSongData ns = new NewSongData();
 
@@ -369,6 +409,8 @@ namespace TaikoSoundEditor
 
             ns.Nus3Bank = NUS3Bank.GetNus3Bank(songName, id, idsp, tja.Headers.DemoStart);
 
+
+            Logger.Info("Conversion done");
             FeedbackBox.AppendText("Done\r\n");
 
             AddedMusic.Add(ns);
@@ -383,6 +425,7 @@ namespace TaikoSoundEditor
 
         private void CreateTmpDir()
         {
+            Logger.Info($"Creating .-tmp/");
             if (!Directory.Exists(".-tmp"))            
                 Directory.CreateDirectory(".-tmp");            
         }
@@ -398,6 +441,7 @@ namespace TaikoSoundEditor
 
         private void ExportDatatable(string path)
         {
+            Logger.Info($"Exporting Datatable to '{path}'");
             var mi = new MusicInfos();
             mi.Items.AddRange(MusicInfos.Items);
             mi.Items.AddRange(AddedMusic.Select(_ => _.MusicInfo));
@@ -447,7 +491,8 @@ namespace TaikoSoundEditor
 
         private void ExportNusBanks(string path)
         {
-            foreach(var ns in AddedMusic)
+            Logger.Info($"Exporting NUS3BaNKS to '{path}'");
+            foreach (var ns in AddedMusic)
             {
                 File.WriteAllBytes(Path.Combine(path, $"song_{ns.Id}.nus3bank"), ns.Nus3Bank);
             }
@@ -455,6 +500,7 @@ namespace TaikoSoundEditor
 
         private void ExportSoundBinaries(string path)
         {
+            Logger.Info($"Exporting Sound .bin's to '{path}'");
             foreach (var ns in AddedMusic)
             {
                 var sdir = Path.Combine(path, ns.Id);
@@ -489,6 +535,7 @@ namespace TaikoSoundEditor
 
         private void ExportDatatableButton_Click(object sender, EventArgs e) => RunGuard(() =>
         {
+            Logger.Info($"Clicked ExportDatatableButton");
             var path = PickPath();
             if (path == null)
             {
@@ -503,6 +550,7 @@ namespace TaikoSoundEditor
 
         private void ExportSoundFoldersButton_Click(object sender, EventArgs e) => RunGuard(() =>
         {
+            Logger.Info($"Clicked ExportSoundFoldersButton");
             var path = PickPath();
             if (path == null)
             {
@@ -517,6 +565,7 @@ namespace TaikoSoundEditor
 
         private void ExportSoundBanksButton_Click(object sender, EventArgs e) => RunGuard(() =>
         {
+            Logger.Info($"Clicked ExportSoundBanksButton");
             var path = PickPath();
             if (path == null)
             {
@@ -531,6 +580,7 @@ namespace TaikoSoundEditor
 
         private string PickPath()
         {
+            Logger.Info($"Picking path dialog");
             var picker = new FolderPicker();
             if (picker.ShowDialog() == true)
                 return picker.ResultPath;
@@ -539,6 +589,7 @@ namespace TaikoSoundEditor
 
         private void ExportAllButton_Click(object sender, EventArgs e) => RunGuard(() =>
         {
+            Logger.Info($"Clicked Export All");
             var path = PickPath();
             if (path == null)
             {

NUS3Bank.cs

@@ -4,6 +4,7 @@ using System.Linq;
 using System.Text;
 using System.Threading.Tasks;
 using TaikoSoundEditor.Properties;
+using static TaikoSoundEditor.TJA;
 
 namespace TaikoSoundEditor
 {
@@ -19,6 +20,11 @@ namespace TaikoSoundEditor
 
         public static byte[] GetNus3Bank(string songId, int uniqueId, byte[] idsp, float demostart)
         {
+            Logger.Info($"Creating NUS3BANK");
+            Logger.Info($"songId = {songId}");
+            Logger.Info($"uniqId = {uniqueId}");
+            Logger.Info($"idsp.len = {idsp.Length}");
+            Logger.Info($"demostart = {demostart}");
             using var ms = new MemoryStream();
 
             var header = Resources.song_ABCDEF_nus3bank.ToArray();

Program.cs

@@ -1,4 +1,5 @@
 using System.Diagnostics;
+using System.Globalization;
 
 namespace TaikoSoundEditor
 {
@@ -10,20 +11,18 @@ namespace TaikoSoundEditor
         [STAThread]
         static void Main()
         {    
-            /*var tja = new TJA(File.ReadAllLines($@"C:\Users\NotImpLife\Desktop\nus\EXAMPLE .TJA\hoshis\hoshis.tja"));
+            try
-            File.WriteAllText("tja.txt", tja.ToString());
-
-            for (int i = 0; i < 4; i++)
             {
-                var c = tja.Courses[i].Converted;
+                int x = 0;
-                Debug.WriteLine(i+" "+c.Notes.Length);
+                int y = 2 / x;
-                //Debug.WriteLine(c.Events.Length);
+            }
+            catch(Exception e)
+            {
+                Debug.WriteLine(e);
             }
 
-            return;*/
-            //File.WriteAllText("tja.txt", tja.ToString());
-
 
+            CultureInfo.CurrentCulture = CultureInfo.InvariantCulture;
             ApplicationConfiguration.Initialize();
             Application.Run(new MainForm());
         }

Properties/PublishProfiles/FolderProfile.pubxml.user

@@ -4,7 +4,7 @@ https://go.microsoft.com/fwlink/?LinkID=208121.
 -->
 <Project>
   <PropertyGroup>
-    <History>True|2023-07-18T06:25:23.0403589Z;True|2023-07-17T17:57:08.1469738+03:00;True|2023-07-17T11:28:41.9554245+03:00;True|2023-07-17T11:15:26.2194507+03:00;</History>
+    <History>True|2023-07-18T06:38:50.7615921Z;True|2023-07-18T09:25:23.0403589+03:00;True|2023-07-17T17:57:08.1469738+03:00;True|2023-07-17T11:28:41.9554245+03:00;True|2023-07-17T11:15:26.2194507+03:00;</History>
     <LastFailureDetails />
   </PropertyGroup>
 </Project>

TJA.cs

@@ -7,6 +7,7 @@ using System.Text;
 using System.Text.RegularExpressions;
 using System.Threading.Tasks;
 using TaikoSoundEditor.Extensions;
+using TaikoSoundEditor.Utils;
 using static TaikoSoundEditor.TJA;
 
 namespace TaikoSoundEditor
@@ -54,7 +55,7 @@ namespace TaikoSoundEditor
         {
             Match match = null;
 
-            Debug.WriteLine(line);            
+            Logger.Info($"Parsing line : {line}");            
 
             if ((match = line.Match("\\/\\/.*")) != null) 
             {               
@@ -65,16 +66,16 @@ namespace TaikoSoundEditor
             {
                 var nameUpper = match.Groups[1].Value.ToUpper();
                 var value = match.Groups[2].Value;
-                Debug.WriteLine($"Match = {nameUpper}, {value}");
+                Logger.Info($"Match = {nameUpper}, {value}");
 
                 if (HEADER_GLOBAL.Contains(nameUpper))
                 {
-                    Debug.WriteLine("Header++");
+                    Logger.Info($"Detected header");
                     return new Line("header", "global", nameUpper, value.Trim());
                 }
                 else if (HEADER_COURSE.Contains(nameUpper))
                 {
-                    Debug.WriteLine("HCourse++");
+                    Logger.Info($"Detected course");
                     return new Line("header", "course", nameUpper, value.Trim());
                 }
             }
@@ -84,19 +85,27 @@ namespace TaikoSoundEditor
                 var value = match.Groups[2].Value ?? "";
 
                 if (COMMAND.Contains(nameUpper))
+                {
+                    Logger.Info($"Detected command");
                     return new Line("command", null, nameUpper, value.Trim());
                 }
+                else
+                    Logger.Warning($"Unknown command : {nameUpper} with value {value.Trim()}");
+            }
             else if ((match = line.Match("^(([0-9]|A|B|C|F|G)*,?)$")) != null) 
             {
+                Logger.Info($"Detected command");
                 var data = match.Groups[1].Value;
                 return new Line("data", null, null, data);                
             }
+            Logger.Warning($"Unknown line : {line}");
             return new Line("unknwon", null, null, line);
         }    
         
 
         public Course GetCourse(Header tjaHeaders, Line[] lines)
         {
+            Logger.Info($"Getting course from {lines.Length} lines");
             var headers = new CourseHeader();
 
             var measures = new List<Measure>();
@@ -113,21 +122,25 @@ namespace TaikoSoundEditor
             {
                 if(line.Type=="header")
                 {
+                    Logger.Info($"header {line.Name} {line.Value}");
+
                     if (line.Name == "COURSE")
                         headers.Course = line.Value;
                     else if (line.Name == "LEVEL")
-                        headers.Level = int.Parse(line.Value);
+                        headers.Level = Number.ParseInt(line.Value);
                     else if (line.Name == "BALLOON")
-                        headers.Balloon = new Regex("[^0-9]").Split(line.Value).Where(_ => _ != "").Select(int.Parse).ToArray();
+                        headers.Balloon = new Regex("[^0-9]").Split(line.Value).Where(_ => _ != "").Select(Number.ParseInt).ToArray();
                     else if (line.Name == "SCOREINIT")
-                        headers.ScoreInit = int.Parse(line.Value);
+                        headers.ScoreInit = Number.ParseInt(line.Value);
                     else if (line.Name == "SCOREDIFF")
-                        headers.ScoreDiff = int.Parse(line.Value);
+                        headers.ScoreDiff = Number.ParseInt(line.Value);
                     else if (line.Name == "TTROWBEAT")
-                        headers.TTRowBeat = int.Parse(line.Value);
+                        headers.TTRowBeat = Number.ParseInt(line.Value);
                 }
                 else if(line.Type=="command")
                 {
+                    Logger.Info($"Command {line.Name} {line.Value}");
+
                     if (line.Name == "BRANCHSTART")
                     {
                         if (!flagLevelhold)
@@ -142,8 +155,8 @@ namespace TaikoSoundEditor
                             }
                             else if (values[0] == "p")
                             {
-                                if (values.Length >= 3 && float.Parse(values[2]) <= 100) targetBranch = "M";
+                                if (values.Length >= 3 && Number.ParseFloat(values[2]) <= 100) targetBranch = "M";
-                                else if (values.Length >= 2 && float.Parse(values[1]) <= 100) targetBranch = "E";
+                                else if (values.Length >= 2 && Number.ParseFloat(values[1]) <= 100) targetBranch = "E";
                                 else targetBranch = "N";
                             }
                         }
@@ -166,8 +179,8 @@ namespace TaikoSoundEditor
                                 var matchMeasure = line.Value.Match("(\\d+)\\/(\\d+)");
                                 if (matchMeasure != null)
                                 {
-                                    measureDividend = int.Parse(matchMeasure.Groups[1].Value);
+                                    measureDividend = Number.ParseInt(matchMeasure.Groups[1].Value);
-                                    measureDivisor = int.Parse(matchMeasure.Groups[2].Value);
+                                    measureDivisor = Number.ParseInt(matchMeasure.Groups[2].Value);
                                 }
                             }
                             else if (line.Name == "GOGOSTART")
@@ -175,9 +188,9 @@ namespace TaikoSoundEditor
                             else if (line.Name == "GOGOEND")
                                 measureEvents.Add(new MeasureEvent("gogoEnd", measureData.Length));
                             else if (line.Name == "SCROLL")
-                                measureEvents.Add(new MeasureEvent("scroll", measureData.Length, float.Parse(line.Value)));
+                                measureEvents.Add(new MeasureEvent("scroll", measureData.Length, Number.ParseFloat(line.Value)));
                             else if (line.Name == "BPMCHANGE")
-                                measureEvents.Add(new MeasureEvent("bpm", measureData.Length, float.Parse(line.Value)));
+                                measureEvents.Add(new MeasureEvent("bpm", measureData.Length, Number.ParseFloat(line.Value)));
                             else if (line.Name == "TTBREAK")
                                 measureProperties["ttBreak"] = true;
                             else if (line.Name == "LEVELHOLD")
@@ -189,6 +202,7 @@ namespace TaikoSoundEditor
                 }
                 else if(line.Type=="data" && currentBranch==targetBranch)
                 {
+                    Logger.Info($"Data {line.Value}");
                     var data = line.Value;
                     if (data.EndsWith(","))
                     {
@@ -239,7 +253,9 @@ namespace TaikoSoundEditor
             else if (courseValue == "edit" || courseValue == "ura"|| courseValue == "4")
                 course = 4;
 
-            if(measureData!="" || measureData!=null)
+            Logger.Info($"Course difficulty =  {course}");
+
+            if (measureData!="" || measureData!=null)
             {
                 measures.Add(new Measure(new int[] { measureDividend, measureDivisor }, measureProperties, measureData, measureEvents));
             }
@@ -251,14 +267,15 @@ namespace TaikoSoundEditor
                     measures[measures.Count - 1].Events.Add(ev);
                 }
             }
-            Debug.WriteLine(measures[measures.Count - 1]);
+            var c = new Course(course, headers, measures);
-
+            Logger.Info($"Course created : {c}");
-
+            return c;
-            return new Course(course, headers, measures);
         }
 
         public void Parse(string[] lines)
         {
+            Logger.Info($"Parse start");
+
             var headers = new Header();
             var courses = new Dictionary<int, Course>();
 
@@ -273,6 +290,8 @@ namespace TaikoSoundEditor
 
                 if(parsed.Type=="header" && parsed.Scope=="global")
                 {
+                    Logger.Info($"Header global {parsed.Name} = {parsed.Value}");
+
                     if (parsed.Name == "TITLE")
                         headers.Title = parsed.Value;
                     if (parsed.Name == "TITLEJA")
@@ -280,13 +299,13 @@ namespace TaikoSoundEditor
                     if (parsed.Name == "SUBTITLE")
                         headers.Subtitle = parsed.Value.StartsWith("--") ? parsed.Value.Substring(2) : parsed.Value;
                     if (parsed.Name == "BPM")
-                        headers.Bpm = float.Parse(parsed.Value);
+                        headers.Bpm = Number.ParseFloat(parsed.Value);
                     if (parsed.Name == "WAVE")
                         headers.Wave = parsed.Value;
                     if (parsed.Name == "OFFSET")
-                        headers.Offset = float.Parse(parsed.Value);
+                        headers.Offset = Number.ParseFloat(parsed.Value);
                     if (parsed.Name == "DEMOSTART")
-                        headers.DemoStart = float.Parse(parsed.Value);
+                        headers.DemoStart = Number.ParseFloat(parsed.Value);
                     if (parsed.Name == "GENRE")
                         headers.Genre = parsed.Value;
                 }
@@ -294,7 +313,7 @@ namespace TaikoSoundEditor
                 {
                     if (parsed.Name == "COURSE") 
                     {
-                        Debug.WriteLine($"Course found : {parsed.Value}");
+                        Logger.Info($"Course found : {parsed.Value}");
                         if (courseLines.Count>0)
                         {
                             var course = GetCourse(headers, courseLines.ToArray());
@@ -316,6 +335,8 @@ namespace TaikoSoundEditor
 
             Headers = headers;
             Courses = courses;
+
+            Logger.Info($"Parse end");
         }
 
 
@@ -415,7 +436,9 @@ namespace TaikoSoundEditor
 
         public static List<byte[]> RunTja2Fumen(string sourcePath)
         {
+            Logger.Info("Running tja2fumen");            
             sourcePath = Path.GetFullPath(sourcePath);
+            Logger.Info($"source = {sourcePath}");
 
             var dir = Path.GetDirectoryName(sourcePath);
             var fname = Path.GetFileNameWithoutExtension(sourcePath);

Utils/Number.cs

@@ -0,0 +1,35 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace TaikoSoundEditor.Utils
+{
+    internal static class Number
+    {
+        public static int ParseInt(string value)
+        {
+            try
+            {
+                return int.Parse(value);
+            }
+            catch(FormatException ex)
+            {
+                throw new FormatException($"{ex.Message} : {value} to int", ex);
+            }
+        }
+
+        public static float ParseFloat(string value)
+        {
+            try
+            {
+                return float.Parse(value);
+            }
+            catch (FormatException ex)
+            {
+                throw new FormatException($"{ex.Message} : {value} to float", ex);
+            }
+        }
+    }
+}