TerminalDxe/ansi.c

   1 /*++
   2
   3 Copyright (c) 2006, Intel Corporation
   4 All rights reserved. This program and the accompanying materials
   5 are licensed and made available under the terms and conditions of the BSD License
   6 which accompanies this distribution.  The full text of the license may be found at
   7 http://opensource.org/licenses/bsd-license.php
   8
   9 THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
  10 WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
  11
  12 Module Name:
  13
  14     ansi.c
  15
  16 Abstract:
  17
  18
  19 Revision History
  20 --*/
  21
  22
  23 #include "Terminal.h"
  24
  25 VOID
  26 AnsiRawDataToUnicode (
  27   IN  TERMINAL_DEV    *TerminalDevice
  28   )
  29 {
  30   UINT8 RawData;
  31
  32   //
  33   // pop the raw data out from the raw fifo,
  34   // and translate it into unicode, then push
  35   // the unicode into unicode fifo, until the raw fifo is empty.
  36   //
  37   while (!IsRawFiFoEmpty (TerminalDevice)) {
  38
  39     RawFiFoRemoveOneKey (TerminalDevice, &RawData);
  40
  41     UnicodeFiFoInsertOneKey (TerminalDevice, (UINT16) RawData);
  42   }
  43 }
  44
  45 EFI_STATUS
  46 AnsiTestString (
  47   IN  TERMINAL_DEV    *TerminalDevice,
  48   IN  CHAR16          *WString
  49   )
  50 {
  51   CHAR8 GraphicChar;
  52
  53   //
  54   // support three kind of character:
  55   // valid ascii, valid efi control char, valid text graphics.
  56   //
  57   for (; *WString != CHAR_NULL; WString++) {
  58
  59     if ( !(TerminalIsValidAscii (*WString) ||
  60         TerminalIsValidEfiCntlChar (*WString) ||
  61         TerminalIsValidTextGraphics (*WString, &GraphicChar, NULL) )) {
  62
  63       return EFI_UNSUPPORTED;
  64     }
  65   }
  66
  67   return EFI_SUCCESS;
  68 }