feat: update loc to allow use by plugins

Dalamud.Test/LocalizationTests.cs

@@ -9,7 +9,7 @@ namespace Dalamud.Test {
         
         public LocalizationTests() {
             var workingDir = Path.GetDirectoryName(Assembly.GetExecutingAssembly().Location);
-            this.localization = new Localization(workingDir);
+            this.localization = new Localization(workingDir, "dalamud_");
             this.localization.OnLocalizationChanged += code => this.currentLangCode = code;
         }
 

Dalamud/Dalamud.cs

@@ -218,7 +218,7 @@ namespace Dalamud
 
                 Log.Verbose("[START] CS OK!");
 
-                this.LocalizationManager = new Localization(this.AssetDirectory.FullName);
+                this.LocalizationManager = new Localization(Path.Combine(this.AssetDirectory.FullName, "UIRes", "loc", "dalamud"), "dalamud_");
                 if (!string.IsNullOrEmpty(this.Configuration.LanguageOverride))
                     this.LocalizationManager.SetupWithLangCode(this.Configuration.LanguageOverride);
                 else

Dalamud/Localization.cs

@@ -2,6 +2,7 @@ using System;
 using System.Globalization;
 using System.IO;
 using System.Linq;
+using System.Reflection;
 
 using CheapLoc;
 using Serilog;
@@ -20,15 +21,20 @@ namespace Dalamud
 
         private const string FallbackLangCode = "en";
 
-        private readonly string workingDirectory;
+        private readonly string locResourceDirectory;
+        private readonly string locResourcePrefix;
+        private readonly Assembly assembly;
 
         /// <summary>
         /// Initializes a new instance of the <see cref="Localization"/> class.
         /// </summary>
-        /// <param name="workingDirectory">The working directory to load language files from.</param>
+        /// <param name="locResourceDirectory">The working directory to load language files from.</param>
-        public Localization(string workingDirectory)
+        /// <param name="locResourcePrefix">The prefix on the loc resource file name (e.g. dalamud_).</param>
+        public Localization(string locResourceDirectory, string locResourcePrefix = "")
         {
-            this.workingDirectory = workingDirectory;
+            this.locResourceDirectory = locResourceDirectory;
+            this.locResourcePrefix = locResourcePrefix;
+            this.assembly = Assembly.GetCallingAssembly();
         }
 
         /// <summary>
@@ -52,7 +58,7 @@ namespace Dalamud
                 var currentUiLang = CultureInfo.CurrentUICulture;
                 Log.Information("Trying to set up Loc for culture {0}", currentUiLang.TwoLetterISOLanguageName);
 
-                if (ApplicableLangCodes.Any(x => currentUiLang.TwoLetterISOLanguageName == x))
+                if (ApplicableLangCodes.Any(langCode => currentUiLang.TwoLetterISOLanguageName == langCode))
                 {
                     this.SetupWithLangCode(currentUiLang.TwoLetterISOLanguageName);
                 }
@@ -74,7 +80,7 @@ namespace Dalamud
         public void SetupWithFallbacks()
         {
             this.OnLocalizationChanged?.Invoke(FallbackLangCode);
-            Loc.SetupWithFallbacks();
+            Loc.SetupWithFallbacks(this.assembly);
         }
 
         /// <summary>
@@ -90,7 +96,43 @@ namespace Dalamud
             }
 
             this.OnLocalizationChanged?.Invoke(langCode);
-            Loc.Setup(File.ReadAllText(Path.Combine(this.workingDirectory, "UIRes", "loc", "dalamud", $"dalamud_{langCode}.json")));
+            try
+            {
+                Loc.Setup(this.ReadLocData(langCode), this.assembly);
+            }
+            catch (Exception ex)
+            {
+                Log.Error(ex, "Could not load loc {0}. Setting up fallbacks.", langCode);
+                this.SetupWithFallbacks();
+            }
+        }
+
+        /// <summary>
+        /// Saves localizable JSON data in the current working directory for the provided assembly.
+        /// </summary>
+        public void ExportLocalizable()
+        {
+            Loc.ExportLocalizableForAssembly(this.assembly);
+        }
+
+        /// <summary>
+        /// Search the set-up localization data for the provided assembly for the given string key and return it.
+        /// If the key is not present, the fallback is shown.
+        /// The fallback is also required to create the string files to be localized.
+        /// </summary>
+        /// <param name="key">The string key to be returned.</param>
+        /// <param name="fallBack">The fallback string, usually your source language.</param>
+        /// <returns>The localized string, fallback or string key if not found.</returns>
+        public string Localize(string key, string fallBack)
+        {
+            return Loc.Localize(key, fallBack, this.assembly);
+        }
+
+        private string ReadLocData(string langCode)
+        {
+            return File.ReadAllText(Path.Combine(
+                this.locResourceDirectory,
+                $"{this.locResourcePrefix}{langCode}.json"));
         }
     }
 }

Dalamud/Plugin/DalamudPluginInterface.cs

@@ -189,6 +189,12 @@ namespace Dalamud.Plugin
         /// <returns>directory with path of AppData/XIVLauncher/pluginConfig/PluginInternalName.</returns>
         public string GetPluginConfigDirectory() => this.configs.GetDirectory(this.pluginName);
 
+        /// <summary>
+        /// Get the loc directory.
+        /// </summary>
+        /// <returns>directory with path of AppData/XIVLauncher/pluginConfig/PluginInternalName/loc.</returns>
+        public string GetPluginLocDirectory() => this.configs.GetDirectory(Path.Combine(this.pluginName, "loc"));
+
         #region Chat Links
 
         /// <summary>