feat: 添加获取所有可用文化的函数

JackCraft.I18N/I18NConfig.cs

@@ -1,5 +1,6 @@
 using System.Globalization;
 using System.Reflection;
+using System.Resources;
 
 namespace JackCraft.I18N;
 
@@ -9,4 +10,5 @@ internal static class I18NConfig
     public static string BaseName { get; set; } = string.Empty;
     public static Assembly Assembly { get; set; } = typeof(I18NConfig).Assembly;
     public static CultureInfo Culture { get; set; } = CultureInfo.InvariantCulture;
+    public static ResourceManager ResourceManager => new(BaseName, Assembly);
 }

JackCraft.I18N/I18NManager.cs

@@ -28,6 +28,7 @@ public sealed class I18NManager : INotifyPropertyChanged
 
     public static string BaseName => I18NConfig.BaseName;
     public static Assembly Assembly => I18NConfig.Assembly;
+    private ResourceManager ResourceManager => I18NConfig.ResourceManager;
     public event PropertyChangedEventHandler? PropertyChanged;
 
     private void OnPropertyChanged([CallerMemberName] string? propertyName = null)
@@ -38,11 +39,18 @@ public sealed class I18NManager : INotifyPropertyChanged
     public T? Get<T>(string key, CultureInfo? culture = null, params object?[] values)
     {
         culture ??= Culture;
-        var resourceManager = new ResourceManager(BaseName, Assembly);
-        var resourceSet = resourceManager.GetResourceSet(culture, true, true);
+        var resourceSet = ResourceManager.GetResourceSet(culture, true, true);
         var obj = resourceSet?.GetObject(key);
         if (obj is string str && values.Length > 0) return (dynamic)string.Format(str, values);
         if (obj != null) return (dynamic)obj;
         return default;
     }
+
+    public CultureInfo[] GetCultures()
+    {
+        var cultures = CultureInfo.GetCultures(CultureTypes.AllCultures)
+            .Where(culture => ResourceManager.GetResourceSet(culture, true, false) != null)
+            .ToList();
+        return cultures.ToArray();
+    }
 }

Test/App.axaml.cs

@@ -13,6 +13,7 @@ public class App : Application
     public override void Initialize()
     {
         I18NManager.Culture = new CultureInfo("zh");
+        var totalCultures = I18NManager.GetCultures();
         AvaloniaXamlLoader.Load(this);
     }