Add terminal width detection to llvm::sys::Process. This is needed to
fix Clang PRs 4148 and 4183.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@71448 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/System/Win32/Process.inc b/lib/System/Win32/Process.inc
index 157483a..e1d7a92 100644
--- a/lib/System/Win32/Process.inc
+++ b/lib/System/Win32/Process.inc
@@ -131,4 +131,20 @@
   return GetFileType((HANDLE)_get_osfhandle(2)) == FILE_TYPE_CHAR;
 }
 
+unsigned Process::StandardOutColumns() {
+  unsigned Columns = 0;
+  CONSOLE_SCREEN_BUFFER_INFO csbi;
+  if (GetConsoleScreenBufferInfo(GetStdHandle(STD_OUTPUT_HANDLE), &csbi))
+    Columns = csbi.dwSize.X;
+  return Columns;
+}
+
+unsigned Process::StandardErrColumns() {
+  unsigned Columns = 0;
+  CONSOLE_SCREEN_BUFFER_INFO csbi;
+  if (GetConsoleScreenBufferInfo(GetStdHandle(STD_ERROR_HANDLE), &csbi))
+    Columns = csbi.dwSize.X;
+  return Columns;
+}
+
 }