Add functions for determining if the stdin/out/err is connected to a

console or not.

llvm-svn: 19236

llvm/lib/System/Win32/Process.cpp

@@ -14,6 +14,7 @@
 #include "Win32.h"
 #include <psapi.h>
 #include <malloc.h>
+#include <io.h>
 
 #pragma comment(lib, "psapi.lib")
 
@@ -99,5 +100,17 @@ void Process::PreventCoreFiles() {
   // dialog box from coming up.  Or maybe not...
 }
 
+bool Process::StandardInIsUserInput() {
+  return GetFileType((HANDLE)_get_osfhandle(0)) == FILE_TYPE_CHAR;
+}
+
+bool Process::StandardOutIsDisplayed() {
+  return GetFileType((HANDLE)_get_osfhandle(1)) == FILE_TYPE_CHAR;
+}
+
+bool Process::StandardErrIsDisplayed() {
+  return GetFileType((HANDLE)_get_osfhandle(2)) == FILE_TYPE_CHAR;
+}
+
 }
 // vim: sw=2 smartindent smarttab tw=80 autoindent expandtab