Rewrite CommandLineArgumentsProvider to be usable without subclassing

Author: 0xced

XmlSchemaClassGenerator/CommandLineArgumentsProvider.cs

@@ -1,18 +1,24 @@
 using System;
+using System.Diagnostics.CodeAnalysis;
 using System.IO;
 using System.Linq;
 
 namespace XmlSchemaClassGenerator
 {
     public class CommandLineArgumentsProvider
     {
-        public virtual string CommandLineArguments
+        public CommandLineArgumentsProvider(string commandLineArguments)
         {
-            get
-            {
-                var args = Environment.GetCommandLineArgs();
-                return string.Join(" ", args.Take(1).Select(Path.GetFileNameWithoutExtension).Concat(args.Skip(1)).Select(Extensions.QuoteIfNeeded));
-            }
+            CommandLineArguments = commandLineArguments ?? throw new ArgumentNullException(nameof(commandLineArguments));
+        }
+
+        public string CommandLineArguments { get; }
+
+        public static CommandLineArgumentsProvider CreateFromEnvironment()
+        {
+            var args = Environment.GetCommandLineArgs();
+            var commandLineArguments = string.Join(" ", args.Take(1).Select(Path.GetFileNameWithoutExtension).Concat(args.Skip(1)).Select(Extensions.QuoteIfNeeded));
+            return new CommandLineArgumentsProvider(commandLineArguments);
         }
     }
 }

XmlSchemaClassGenerator/GeneratorConfiguration.cs

@@ -38,7 +38,7 @@ public GeneratorConfiguration()
             NamingProvider = new NamingProvider(NamingScheme);
             Version = VersionProvider.CreateFromAssembly();
             EnableUpaCheck = true;
-            CommandLineArgumentsProvider = new CommandLineArgumentsProvider();
+            CommandLineArgumentsProvider = CommandLineArgumentsProvider.CreateFromEnvironment();
         }
 
         /// <summary>