Addressing code review comments by using Streams instead of ing the contents into a string.

Author: livarcocc

src/Microsoft.DotNet.Cli.Utils/RuntimeConfig.cs

@@ -13,12 +13,16 @@ public class RuntimeConfig
         public RuntimeConfigFramework Framework { get; } 
 
         public RuntimeConfig(string runtimeConfigPath) 
-        { 
-            var runtimeConfigJson = OpenRuntimeConfig(runtimeConfigPath); 
- 
-            Framework = ParseFramework(runtimeConfigJson); 
- 
-            IsPortable = Framework != null; 
+        {
+            JObject runtimeConfigJson;
+            using (var streamReader = new StreamReader(new FileStream(runtimeConfigPath, FileMode.Open)))
+            {
+                runtimeConfigJson = OpenRuntimeConfig(streamReader);
+            }
+
+            Framework = ParseFramework(runtimeConfigJson);
+
+            IsPortable = Framework != null;
         } 
 
         public static bool IsApplicationPortable(string entryAssemblyPath) 
@@ -32,9 +36,9 @@ public static bool IsApplicationPortable(string entryAssemblyPath)
             return false; 
         } 
 
-        private JObject OpenRuntimeConfig(string runtimeConfigPath) 
+        private JObject OpenRuntimeConfig(StreamReader streamReader) 
         {
-            var reader = new JsonTextReader(new StringReader(File.ReadAllText(runtimeConfigPath)));
+            var reader = new JsonTextReader(streamReader);
 
             return JObject.Load(reader);
         } 

src/dotnet/commands/dotnet-add/dotnet-add-package/AddPackageParser.cs

@@ -54,29 +54,30 @@ public static IEnumerable<string> QueryNuGet(string match)
         {
             var httpClient = new HttpClient();
 
-            string result;
+            Stream result;
 
             try
             {
                 var cancellation = new CancellationTokenSource(TimeSpan.FromSeconds(10));
                 var response = httpClient.GetAsync($"https://api-v2v3search-0.nuget.org/query?q={match}&skip=0&take=100&prerelease=true", cancellation.Token)
                                          .Result;
 
-                result = response.Content.ReadAsStringAsync().Result;
+                result = response.Content.ReadAsStreamAsync().Result;
             }
             catch (Exception)
             {
                 yield break;
             }
 
-            using (var reader = new JsonTextReader(new StringReader(result)))
+            JObject json;
+            using (var reader = new JsonTextReader(new StreamReader(result)))
             {
-                var json = JObject.Load(reader);
+                json = JObject.Load(reader);
+            }
 
-                foreach (var id in json["data"])
-                {
-                    yield return id["id"].Value<string>();
-                }
+            foreach (var id in json["data"])
+            {
+                yield return id["id"].Value<string>();
             }
         }
     }