Implement shared Ctrl-C test implementation

Author: rjmholt

src/PowerShellEditorServices/Services/PowerShell/Console/LegacyReadLine.cs

@@ -1,16 +1,16 @@
 // Copyright (c) Microsoft Corporation.
 // Licensed under the MIT License.
 
-using System.Collections.Generic;
-using System.Management.Automation;
-using System.Security;
-using System.Text;
-using System.Threading;
 using Microsoft.PowerShell.EditorServices.Services.PowerShell.Debugging;
 using Microsoft.PowerShell.EditorServices.Services.PowerShell.Execution;
 using Microsoft.PowerShell.EditorServices.Services.PowerShell.Host;
+using Microsoft.PowerShell.EditorServices.Services.PowerShell.Utility;
+using System.Collections.Generic;
 using System.Linq;
+using System.Management.Automation;
 using System.Management.Automation.Language;
+using System.Text;
+using System.Threading;
 
 namespace Microsoft.PowerShell.EditorServices.Services.PowerShell.Console
 {
@@ -345,7 +345,7 @@ public override string ReadLine(CancellationToken cancellationToken)
                             return completedInput;
 
                         default:
-                            if (IsCtrlC(keyInfo))
+                            if (keyInfo.IsCtrlC())
                             {
                                 throw new PipelineStoppedException();
                             }

src/PowerShellEditorServices/Services/PowerShell/Console/TerminalReadLine.cs

@@ -1,13 +1,14 @@
 // Copyright (c) Microsoft Corporation.
 // Licensed under the MIT License.
 
+using Microsoft.PowerShell.EditorServices.Services.PowerShell.Utility;
+using System.Management.Automation;
 using System.Security;
 using System.Threading;
 
 namespace Microsoft.PowerShell.EditorServices.Services.PowerShell.Console
 {
     using System;
-    using System.Management.Automation;
 
     internal abstract class TerminalReadLine : IReadLine
     {
@@ -31,7 +32,7 @@ public SecureString ReadSecureLine(CancellationToken cancellationToken)
                 {
                     ConsoleKeyInfo keyInfo = ReadKey(cancellationToken);
 
-                    if (IsCtrlC(keyInfo))
+                    if (keyInfo.IsCtrlC())
                     {
                         throw new PipelineStoppedException();
                     }
@@ -97,18 +98,5 @@ public SecureString ReadSecureLine(CancellationToken cancellationToken)
 
             return secureString;
         }
-
-        protected static bool IsCtrlC(ConsoleKeyInfo keyInfo)
-        {
-            if ((int)keyInfo.Key == 3)
-            {
-                return true;
-            }
-
-            return keyInfo.Key == ConsoleKey.C
-                && (keyInfo.Modifiers & ConsoleModifiers.Control) != 0
-                && (keyInfo.Modifiers & ConsoleModifiers.Alt) == 0;
-        }
-
     }
 }

src/PowerShellEditorServices/Services/PowerShell/Host/PsesInternalHost.cs

@@ -747,9 +747,7 @@ private ConsoleKeyInfo ReadKey(bool intercept)
         private bool LastKeyWasCtrlC()
         {
             return _lastKey.HasValue
-                && _lastKey.Value.Key == ConsoleKey.C
-                && (_lastKey.Value.Modifiers & ConsoleModifiers.Control) != 0
-                && (_lastKey.Value.Modifiers & ConsoleModifiers.Alt) == 0;
+                && _lastKey.Value.IsCtrlC();
         }
 
         private void OnDebuggerStopped(object sender, DebuggerStopEventArgs debuggerStopEventArgs)

src/PowerShellEditorServices/Services/PowerShell/Utility/ConsoleKeyInfoExtensions.cs

@@ -0,0 +1,23 @@
+// Copyright (c) Microsoft Corporation.
+// Licensed under the MIT License.
+
+using System;
+
+namespace Microsoft.PowerShell.EditorServices.Services.PowerShell.Utility
+{
+    internal static class ConsoleKeyInfoExtensions
+    {
+        public static bool IsCtrlC(this ConsoleKeyInfo keyInfo)
+        {
+            if ((int)keyInfo.Key == 3)
+            {
+                return true;
+            }
+
+            return keyInfo.Key == ConsoleKey.C
+                && (keyInfo.Modifiers & ConsoleModifiers.Control) != 0
+                && (keyInfo.Modifiers & ConsoleModifiers.Shift) == 0
+                && (keyInfo.Modifiers & ConsoleModifiers.Alt) == 0;
+        }
+    }
+}