Merge topic 'stdio-ctrl-c'

e419429616 StdIo: Restore Windows Console I/O modes on Ctrl-C

Acked-by: Kitware Robot <kwrobot@kitware.com>
Acked-by: buildbot <buildbot@kitware.com>
Merge-request: !11457

Source/cmStdIoInit.cxx

@@ -91,9 +91,26 @@ public:
   OStream StdOut{ std::cout, stdout };
   OStream StdErr{ std::cerr, stderr };
 
+  Globals();
+
   static Globals& Get();
 };
 
+#ifdef _WIN32
+Globals::Globals()
+{
+  static auto const ctrlHandler = [](DWORD /*dwCtrlType*/) -> BOOL {
+    Get().StdErr.Destroy();
+    Get().StdOut.Destroy();
+    Get().StdIn.Destroy();
+    return FALSE;
+  };
+  SetConsoleCtrlHandler(ctrlHandler, TRUE);
+}
+#else
+Globals::Globals() = default;
+#endif
+
 Globals& Globals::Get()
 {
   static Globals globals;

Source/cmStdIoStream.cxx

@@ -145,10 +145,16 @@ Stream::Stream(std::ios& s, FILE* file, Direction direction)
 
 #ifdef _WIN32
 Stream::~Stream()
+{
+  this->Destroy();
+}
+
+void Stream::Destroy()
 {
   if (this->Console_) {
     this->IOS_.rdbuf()->pubsync();
     SetConsoleMode(this->Console_, this->ConsoleOrigMode_);
+    this->Console_ = nullptr;
   }
 }
 #else

Source/cmStdIoStream.h

@@ -30,6 +30,11 @@ enum class TermKind
  */
 class Stream
 {
+#ifdef _WIN32
+  friend class Globals;
+  void Destroy();
+#endif
+
 public:
   /** The kind of terminal to which the stream is attached, if any.  */
   TermKind Kind() const { return this->Kind_; }