1 files changed, 76 insertions, 0 deletions
diff --git a/csharp/src/ProtoGen/ProtocGenCs.cs b/csharp/src/ProtoGen/ProtocGenCs.cs
new file mode 100644
index 00000000..29264200
--- /dev/null
+++ b/csharp/src/ProtoGen/ProtocGenCs.cs
@@ -0,0 +1,76 @@
+using Google.ProtocolBuffers.Compiler.PluginProto;
+using Google.ProtocolBuffers.DescriptorProtos;
+using System;
+using System.Collections.Generic;
+
+// Usage example:
+//   protoc.exe
+//     --plugin=path\to\protoc-gen-cs.exe
+//     --cs_out="-generated_code_attributes=true umbrella_namespace=TutorialProto :."
+//     --proto_path=.\protos\
+//     protos\tutorial\addressbook.proto
+
+namespace Google.ProtocolBuffers.ProtoGen
+{
+    public static class ProtocGenCs
+    {
+        internal static void Run(CodeGeneratorRequest request, CodeGeneratorResponse.Builder response)
+        {
+            var arguments = new List<string>();
+            foreach (var arg in request.Parameter.Split(' '))
+            {
+                var timmedArg = (arg ?? "").Trim();
+                if (!string.IsNullOrEmpty(timmedArg))
+                {
+                    arguments.Add(timmedArg);
+                }
+            }
+            // Adding fake input file to make TryValidate happy.
+            arguments.Add(System.Reflection.Assembly.GetExecutingAssembly().Location);
+
+            GeneratorOptions options = new GeneratorOptions
+            {
+                Arguments = arguments
+            };
+            IList<string> validationFailures;
+            if (!options.TryValidate(out validationFailures))
+            {
+                response.Error += new InvalidOptionsException(validationFailures).Message;
+                return;
+            }
+
+            Generator generator = Generator.CreateGenerator(options);
+            generator.Generate(request, response);
+        }
+
+        public static int Main(string[] args)
+        {
+            // Hack to make sure everything's initialized
+            DescriptorProtoFile.Descriptor.ToString();
+            ExtensionRegistry extensionRegistry = ExtensionRegistry.CreateInstance();
+            CSharpOptions.RegisterAllExtensions(extensionRegistry);
+
+            CodeGeneratorRequest request;
+            var response = new CodeGeneratorResponse.Builder();
+            try
+            {
+                using (var input = Console.OpenStandardInput())
+                {
+                    request = CodeGeneratorRequest.ParseFrom(input, extensionRegistry);
+                }
+                Run(request, response);
+            }
+            catch (Exception e)
+            {
+                response.Error += e.ToString();
+            }
+
+            using (var output = Console.OpenStandardOutput())
+            {
+                response.Build().WriteTo(output);
+                output.Flush();
+            }
+            return 0;
+        }
+    }
+}