Added translation support for server orders.

OpenRA.Mods.Common/Lint/CheckTranslationSyntax.cs

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+#region Copyright & License Information
+/*
+ * Copyright 2007-2021 The OpenRA Developers (see AUTHORS)
+ * This file is part of OpenRA, which is free software. It is made
+ * available to you under the terms of the GNU General Public License
+ * as published by the Free Software Foundation, either version 3 of
+ * the License, or (at your option) any later version. For more
+ * information, see COPYING.
+ */
+#endregion
+
+using System;
+using System.Collections.Generic;
+using System.IO;
+using Fluent.Net;
+using Fluent.Net.Ast;
+
+namespace OpenRA.Mods.Common.Lint
+{
+	class CheckTranslationSyntax : ILintPass
+	{
+		public void Run(Action<string> emitError, Action<string> emitWarning, ModData modData)
+		{
+			foreach (var file in modData.Manifest.Translations)
+			{
+				var stream = modData.DefaultFileSystem.Open(file);
+				using (var reader = new StreamReader(stream))
+				{
+					var ids = new List<string>();
+					var parser = new Parser();
+					var resource = parser.Parse(reader);
+					foreach (var entry in resource.Body)
+					{
+						if (entry is Junk junk)
+							foreach (var annotation in junk.Annotations)
+								emitError($"{annotation.Code}: {annotation.Message} in {file} line {annotation.Span.Start.Line}");
+
+						if (entry is MessageTermBase message)
+						{
+							if (ids.Contains(message.Id.Name))
+								emitWarning($"Duplicate ID `{message.Id.Name}` in {file} line {message.Span.Start.Line}");
+
+							ids.Add(message.Id.Name);
+						}
+					}
+				}
+			}
+		}
+	}
+}