feat: use english localization for untranslated strings

Assets/_ModularAvatar/EditModeTests/LocalizationTest.cs

@@ -0,0 +1,35 @@
+using nadena.dev.modular_avatar.core.editor;
+using NUnit.Framework;
+
+namespace modular_avatar_tests
+{
+    public class LocalizationTest
+    {
+        [SetUp]
+        public void Setup()
+        {
+            Localization.OverrideLanguage = null;
+            Localization.Reload();
+        }
+
+        [TearDown]
+        public void Teardown()
+        {
+            Localization.OverrideLanguage = null;
+        }
+
+        [Test]
+        public void TestLanguageFallback()
+        {
+            Localization.OverrideLanguage = "test";
+            Assert.AreEqual(Localization.S("test0.test_a"), "replaced");
+            Assert.AreEqual(Localization.S("test0.test_b"), "test_b");
+            Assert.AreEqual(Localization.S("test0.test_c"), "test0.test_c");
+
+            Localization.OverrideLanguage = "en";
+            Assert.AreEqual(Localization.S("test0.test_a"), "test_a");
+            Assert.AreEqual(Localization.S("test0.test_b"), "test_b");
+            Assert.AreEqual(Localization.S("test0.test_c"), "test0.test_c");
+        }
+    }
+}

Assets/_ModularAvatar/EditModeTests/LocalizationTest.cs.meta

@@ -0,0 +1,3 @@
+fileFormatVersion: 2
+guid: f029beaecb7c47b2889ce683b71b219f
+timeCreated: 1673953287

Packages/nadena.dev.modular-avatar/Editor/Localization/Localization.cs

@@ -11,6 +11,8 @@ namespace nadena.dev.modular_avatar.core.editor
 {
     internal static class Localization
     {
+        private const string FallbackLanguage = "en";
+
         private const string localizationPathGuid = "488c994003974b3ab2796371cf627bca";
         private static string localizationPathRoot = AssetDatabase.GUIDToAssetPath(localizationPathGuid);
 
@@ -29,6 +31,8 @@ namespace nadena.dev.modular_avatar.core.editor
         private static Dictionary<string, ImmutableDictionary<string, string>> Cache
             = new Dictionary<string, ImmutableDictionary<string, string>>();
 
+        internal static string OverrideLanguage { get; set; } = null;
+
         [MenuItem("Tools/Modular Avatar/Reload localizations")]
         public static void Reload()
         {
@@ -42,12 +46,26 @@ namespace nadena.dev.modular_avatar.core.editor
                 return info;
             }
 
+            var fallback = lang == FallbackLanguage
+                ? ImmutableDictionary<string, string>.Empty
+                : GetLocalization(FallbackLanguage);
+
             var filename = localizationPathRoot + "/" + lang + ".json";
 
             try
             {
                 var langData = File.ReadAllText(filename);
-                info = JsonConvert.DeserializeObject<Dictionary<string, string>>(langData).ToImmutableDictionary();
+                var tmp = JsonConvert.DeserializeObject<Dictionary<string, string>>(langData);
+
+                foreach (var kvp in fallback)
+                {
+                    if (!tmp.ContainsKey(kvp.Key))
+                    {
+                        tmp[kvp.Key] = kvp.Value;
+                    }
+                }
+
+                info = tmp.ToImmutableDictionary();
                 Cache[lang] = info;
                 return info;
             }
@@ -86,7 +104,7 @@ namespace nadena.dev.modular_avatar.core.editor
 
         public static string GetSelectedLocalization()
         {
-            return EditorPrefs.GetString("nadena.dev.modularavatar.lang", "en");
+            return OverrideLanguage ?? EditorPrefs.GetString("nadena.dev.modularavatar.lang", "en");
         }
 
         public static void ShowLanguageUI()

Packages/nadena.dev.modular-avatar/Editor/Localization/en.json

@@ -1,4 +1,6 @@
 {
+  "test0.test_a": "test_a",
+  "test0.test_b": "test_b",
   "boneproxy.foldout.advanced": "Advanced",
   "boneproxy.target": "Target",
   "menuinstall.help.hint_set_menu": "This prefab will be installed to the root menu of your avatar by default. Select a different menu or uncheck the component's enabled checkbox to prevent this.",

Packages/nadena.dev.modular-avatar/Editor/Localization/test.json

@@ -0,0 +1,3 @@
+{
+  "test0.test_a": "replaced"
+}

Packages/nadena.dev.modular-avatar/Editor/Localization/test.json.meta

@@ -0,0 +1,3 @@
+fileFormatVersion: 2
+guid: a851b660ad5443bf92884fdf8e872c4a
+timeCreated: 1673953035