Added TargetOpenAPIVersion CommandOption.

OpenApi/OData2OpenApi/OData2OpenApi/Configuration.cs

@@ -72,18 +72,31 @@ public class Configuration
         /// </summary>
         [CommandOption("--PrefixTypeBeforeKey=[true/false] : Enable prefix entity type name before single key.")]
         public bool PrefixTypeBeforeKey { get; set; } = true;
-#endregion
+
+        /// <summary>
+        /// Gets/set the target OpenAPI version.
+        /// </summary>
+        [CommandOption("--TargetOpenAPIVersion=[value] : Select the target API version (2 or 3)")]
+        public string TargetOpenAPIVersion { get; set; }
+
+        #endregion
 
         /// <summary>
         /// Gets the boolean value indicating whether the input is local file or not.
         /// </summary>
         public bool IsLocalFile { get; private set; }
 
+        /// <summary>
+        /// Gets the spec version to convert to format.
+        /// </summary>
+        public OpenApiSpecVersion SpecVersion { get; private set; } = OpenApiSpecVersion.OpenApi3_0;
+
         /// <summary>
         /// Gets the output format.
         /// </summary>
         public OpenApiFormat Format { get; private set; } = OpenApiFormat.Json;
 
+
         /// <summary>
         /// Validate the configuration.
         /// </summary>
@@ -104,6 +117,11 @@ public void InitializeAndValidate()
                 }
             }
 
+            if (TargetOpenAPIVersion == "2")
+            {
+                SpecVersion = OpenApiSpecVersion.OpenApi2_0;
+            }
+
             if (String.IsNullOrWhiteSpace(OutputFileName))
             {
                 throw new Exception($"'--output=[value]' is required.");

OpenApi/OData2OpenApi/OData2OpenApi/OpenApiGenerator.cs

@@ -29,7 +29,7 @@ public static bool Run(Configuration config)
             using (FileStream fs = File.Create(config.OutputFileName))
             {
                 OpenApiDocument document = edmModel.ConvertToOpenApi(settings);
-                document.Serialize(fs, OpenApi.OpenApiSpecVersion.OpenApi3_0, config.Format);
+                document.Serialize(fs, config.SpecVersion, config.Format);
                 fs.Flush();
             }