[Lldb-commits] [PATCH] D18335: Fix for missing prompt on Windows

[Ted Woodward via lldb-commits]

ted updated this revision to Diff 51462.
ted added a comment.

Updated to change cursor position before async output so old prompt is overwritten.

Adrian, please test with your setup and let me know if it solves the issues you see.


http://reviews.llvm.org/D18335

Files:
  source/Core/IOHandler.cpp

Index: source/Core/IOHandler.cpp
===================================================================
--- source/Core/IOHandler.cpp
+++ source/Core/IOHandler.cpp
@@ -52,6 +52,10 @@
 #include "lldb/Target/StackFrame.h"
 #endif
 
+#ifdef _MSC_VER
+#include <Windows.h>
+#endif
+
 using namespace lldb;
 using namespace lldb_private;
 
@@ -794,7 +798,26 @@
         m_editline_ap->PrintAsync(stream, s, len);
     else
 #endif
+    {
+        const char *prompt = GetPrompt();
+#ifdef _MSC_VER
+        if (prompt)
+        {
+            // Back up over previous prompt using Windows API
+            CONSOLE_SCREEN_BUFFER_INFO screen_buffer_info;
+            HANDLE console_handle = GetStdHandle(STD_OUTPUT_HANDLE);
+            GetConsoleScreenBufferInfo(console_handle, &screen_buffer_info);
+            COORD coord = screen_buffer_info.dwCursorPosition;
+            coord.X -= strlen(prompt);
+            if (coord.X < 0)
+                coord.X = 0;
+            SetConsoleCursorPosition(console_handle, coord);
+        }
+#endif
         IOHandler::PrintAsync(stream, s, len);
+        if (prompt)
+            IOHandler::PrintAsync(GetOutputStreamFile().get(), prompt, strlen(prompt));
+    }
 }
 
 // we may want curses to be disabled for some builds


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