Check in following modules,

DxeIpl
ConPlatform
ConSplitter
GraphicsConsole
Terminal
DevicePath

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@3069 6f19259b-4bc3-4df7-8a09-765794883524

MdeModulePkg/Universal/Console/TerminalDxe/ansi.c

@@ -0,0 +1,73 @@
+/*++
+
+Copyright (c) 2006, Intel Corporation                                                         
+All rights reserved. This program and the accompanying materials                          
+are licensed and made available under the terms and conditions of the BSD License         
+which accompanies this distribution.  The full text of the license may be found at        
+http://opensource.org/licenses/bsd-license.php                                            
+                                                                                          
+THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,                     
+WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.             
+
+Module Name:
+
+    ansi.c
+    
+Abstract: 
+    
+
+Revision History
+--*/
+
+
+//
+// Include common header file for this module.
+//
+#include "CommonHeader.h"
+
+#include "Terminal.h"
+
+VOID
+AnsiRawDataToUnicode (
+  IN  TERMINAL_DEV    *TerminalDevice
+  )
+{
+  UINT8 RawData;
+
+  //
+  // pop the raw data out from the raw fifo,
+  // and translate it into unicode, then push
+  // the unicode into unicode fifo, until the raw fifo is empty.
+  //
+  while (!IsRawFiFoEmpty (TerminalDevice)) {
+
+    RawFiFoRemoveOneKey (TerminalDevice, &RawData);
+
+    UnicodeFiFoInsertOneKey (TerminalDevice, (UINT16) RawData);
+  }
+}
+
+EFI_STATUS
+AnsiTestString (
+  IN  TERMINAL_DEV    *TerminalDevice,
+  IN  CHAR16          *WString
+  )
+{
+  CHAR8 GraphicChar;
+
+  //
+  // support three kind of character:
+  // valid ascii, valid efi control char, valid text graphics.
+  //
+  for (; *WString != CHAR_NULL; WString++) {
+
+    if ( !(TerminalIsValidAscii (*WString) || 
+        TerminalIsValidEfiCntlChar (*WString) ||
+        TerminalIsValidTextGraphics (*WString, &GraphicChar, NULL) )) {
+
+      return EFI_UNSUPPORTED;
+    }
+  }
+
+  return EFI_SUCCESS;
+}