fix: 扫描/解析/编码健壮性修复

- MusicScanner：option 缺失记 Error，目录名正则放宽\n- FumenData：int.TryParse 替代硬解析防崩\n- MusicXml：难度按语义索引，float.TryParse 加 InvariantCulture\n- DdsHelper：向上取整到 4 倍数，保留图片内容

Author: Applesaber

ChuChartManager/DdsHelper.cs

@@ -13,7 +13,7 @@ public static void ConvertPngToDds(string pngPath, string ddsPath)
     {
         var encoder = CreateEncoder();
         using var image = SixLabors.ImageSharp.Image.Load<Rgba32>(pngPath);
-        var size = (image.Width / 4) * 4;
+        var size = ((image.Width + 3) / 4) * 4;
         if (size == 0) size = 4;
         image.Mutate(x => x.Resize(size, size));
         using var fs = File.Create(ddsPath);
@@ -36,7 +36,7 @@ public static byte[] ConvertPngBytesToDds(byte[] pngBytes)
     {
         var encoder = CreateEncoder();
         using var image = SixLabors.ImageSharp.Image.Load<Rgba32>(pngBytes);
-        var size = (image.Width / 4) * 4;
+        var size = ((image.Width + 3) / 4) * 4;
         if (size == 0) size = 4;
         image.Mutate(x => x.Resize(size, size));
         using var ms = new MemoryStream();

ChuChartManager/Models/FumenData.cs

@@ -51,7 +51,7 @@ public string LevelDetailDisplay
 
     public static FumenData FromXml(XmlNode node)
     {
-        var typeId = int.Parse(node.SelectSingleNode("type/id")?.InnerText ?? "0");
+        var typeId = int.TryParse(node.SelectSingleNode("type/id")?.InnerText, out var tid) ? tid : 0;
         var typeStr = node.SelectSingleNode("type/str")?.InnerText ?? "";
 
         return new FumenData

ChuChartManager/Models/MusicXml.cs

@@ -1,3 +1,4 @@
+using System.Globalization;
 using System.Text.Json.Serialization;
 using System.Xml;
 
@@ -93,15 +94,18 @@ private void Parse()
         var fumenNodes = root.SelectNodes("fumens/MusicFumenData");
         if (fumenNodes != null)
         {
-            for (var i = 0; i < Math.Min(fumenNodes.Count, 6); i++)
+            foreach (XmlNode fumenNode in fumenNodes)
             {
-                Fumens[i] = FumenData.FromXml(fumenNodes[i]!);
-                if (string.IsNullOrEmpty(Fumens[i].FilePath)) continue;
-                var c2sPath = Path.Combine(MusicDirectory, Fumens[i].FilePath);
+                var fumen = FumenData.FromXml(fumenNode);
+                var idx = (int)fumen.Difficulty;
+                if (idx < 0 || idx >= Fumens.Length) continue;
+                Fumens[idx] = fumen;
+                if (string.IsNullOrEmpty(Fumens[idx].FilePath)) continue;
+                var c2sPath = Path.Combine(MusicDirectory, Fumens[idx].FilePath);
                 if (!File.Exists(c2sPath)) continue;
-                if (string.IsNullOrEmpty(Fumens[i].NotesDesigner))
-                    Fumens[i].NotesDesigner = FumenData.ReadCreatorFromC2s(c2sPath);
-                Fumens[i].NoteCount = FumenData.CountNotesFromC2s(c2sPath);
+                if (string.IsNullOrEmpty(Fumens[idx].NotesDesigner))
+                    Fumens[idx].NotesDesigner = FumenData.ReadCreatorFromC2s(c2sPath);
+                Fumens[idx].NoteCount = FumenData.CountNotesFromC2s(c2sPath);
             }
         }
     }
@@ -125,7 +129,7 @@ public float GetBpmFromChart()
         {
             if (!line.StartsWith("BPM_DEF")) continue;
             var parts = line.Split('\t', StringSplitOptions.RemoveEmptyEntries);
-            if (parts.Length >= 2 && float.TryParse(parts[1], out var bpm))
+            if (parts.Length >= 2 && float.TryParse(parts[1], NumberStyles.Float, CultureInfo.InvariantCulture, out var bpm))
                 return bpm;
         }
         return 0;

ChuChartManager/MusicScanner.cs

@@ -5,7 +5,7 @@ namespace ChuChartManager;
 
 public partial class MusicScanner
 {
-    [GeneratedRegex(@"^[A-Z](\w+)$")]
+    [GeneratedRegex(@"^[A-Z][A-Za-z0-9_-]*$")]
     private static partial Regex OptionDirRegex();
 
     private readonly string _gamePath;
@@ -49,6 +49,7 @@ public void ScanAll()
         if (!Directory.Exists(optionRoot))
         {
             Log.Warn($"option 目录不存在: {optionRoot}");
+            Errors.Add($"option 目录不存在: {optionRoot}");
             return;
         }