Restore SEBPatch

SafeExamBrowser.I18n/Text.cs

@@ -0,0 +1,77 @@
+/*
+ * Copyright (c) 2024 ETH Zürich, IT Services
+ * 
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ */
+
+using System;
+using System.Collections.Generic;
+using System.Globalization;
+using System.IO;
+using System.Reflection;
+using SafeExamBrowser.I18n.Contracts;
+using SafeExamBrowser.Logging.Contracts;
+
+namespace SafeExamBrowser.I18n
+{
+	/// <summary>
+	/// Default implementation of <see cref="IText"/>.
+	/// </summary>
+	public class Text : IText
+	{
+		private ILogger logger;
+		private IDictionary<TextKey, string> text;
+
+		public Text(ILogger logger)
+		{
+			this.logger = logger;
+			this.text = new Dictionary<TextKey, string>();
+		}
+
+		public string Get(TextKey key)
+		{
+			return text.ContainsKey(key) ? text[key] : $"Could not find text for key '{key}'!";
+		}
+
+		public void Initialize()
+		{
+			try
+			{
+				var assembly = Assembly.GetAssembly(typeof(Text));
+				var data = default(Stream);
+				var language = CultureInfo.CurrentUICulture.TwoLetterISOLanguageName.ToLower();
+				var path = $"{typeof(Text).Namespace}.Data";
+				var resource = default(ITextResource);
+
+				try
+				{
+					logger.Debug($"System language is '{language}', trying to load data...");
+					data = assembly.GetManifestResourceStream($"{path}.{language}.xml");
+				}
+				catch (FileNotFoundException)
+				{
+				}
+
+				if (data == default(Stream))
+				{
+					logger.Warn($"Could not find data for language '{language}'! Loading default language 'en'...");
+					data = assembly.GetManifestResourceStream($"{path}.en.xml");
+				}
+
+				using (data)
+				{
+					resource = new XmlTextResource(data);
+					text = resource.LoadText();
+				}
+
+				logger.Debug("Data successfully loaded.");
+			}
+			catch (Exception e)
+			{
+				logger.Error("Failed to initialize data!", e);
+			}
+		}
+	}
+}