Reduce nuget feeds

test/Microsoft.DotNet.Tools.Tests.Utilities/RuntimeConfig.cs

@@ -0,0 +1,77 @@
+// Copyright (c) .NET Foundation and contributors. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+using System;
+using System.Text.Json;
+using System.IO;
+using Microsoft.DotNet.Cli.Utils;
+
+namespace Microsoft.DotNet.TestFramework
+{
+    internal class RuntimeConfigFramework
+    {
+        public string Name { get; set; }
+        public string Version { get; set; }
+    }
+
+    public class RuntimeConfig
+    {
+        public bool IsPortable { get; }
+        internal RuntimeConfigFramework Framework { get; }
+
+        public RuntimeConfig(string runtimeConfigPath)
+        {
+            var jsonDocumentOptions = new JsonDocumentOptions
+            {
+                AllowTrailingCommas = true,
+                CommentHandling = JsonCommentHandling.Skip
+            };
+
+            using (var stream = File.OpenRead(runtimeConfigPath))
+            using (JsonDocument doc = JsonDocument.Parse(stream, jsonDocumentOptions))
+            {
+                JsonElement root = doc.RootElement;
+                if (root.TryGetProperty("runtimeOptions", out var runtimeOptionsRoot))
+                {
+                    if (runtimeOptionsRoot.TryGetProperty("framework", out var framework))
+                    {
+                        var runtimeConfigFramework = new RuntimeConfigFramework();
+                        string name = null;
+                        string version = null;
+                        foreach (var property in framework.EnumerateObject())
+                        {
+                            if (property.Name.Equals("name", StringComparison.OrdinalIgnoreCase))
+                            {
+                                name = property.Value.GetString();
+                            }
+
+                            if (property.Name.Equals("version", StringComparison.OrdinalIgnoreCase))
+                            {
+                                version = property.Value.GetString();
+                            }
+                        }
+
+                        if (name == null || version == null)
+                        {
+                            Framework = null;
+                        }
+                        else
+                        {
+                            Framework = new RuntimeConfigFramework
+                            {
+                                Name = name,
+                                Version = version
+                            };
+                        }
+                    }
+                    else
+                    {
+                        Framework = null;
+                    }
+                }
+            }
+
+            IsPortable = Framework != null;
+        }
+    }
+}