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      1 /** @file
      2   Implementation of translation upon PC ANSI.
      3 
      4 Copyright (c) 2006 - 2008, Intel Corporation. All rights reserved.<BR>
      5 This program and the accompanying materials
      6 are licensed and made available under the terms and conditions of the BSD License
      7 which accompanies this distribution.  The full text of the license may be found at
      8 http://opensource.org/licenses/bsd-license.php
      9 
     10 THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
     11 WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
     12 
     13 **/
     14 
     15 
     16 #include "Terminal.h"
     17 
     18 /**
     19   Translate all raw data in the Raw FIFO into unicode, and insert
     20   them into Unicode FIFO.
     21 
     22   @param TerminalDevice          The terminal device.
     23 
     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) && !IsUnicodeFiFoFull (TerminalDevice)) {
     38 
     39     RawFiFoRemoveOneKey (TerminalDevice, &RawData);
     40 
     41     UnicodeFiFoInsertOneKey (TerminalDevice, (UINT16) RawData);
     42   }
     43 }
     44 
     45 /**
     46   Check if input string is valid Ascii string, valid EFI control characters
     47   or valid text graphics.
     48 
     49   @param  TerminalDevice          The terminal device.
     50   @param  WString                 The input string.
     51 
     52   @retval EFI_UNSUPPORTED         If not all input characters are valid.
     53   @retval EFI_SUCCESS             If all input characters are valid.
     54 
     55 **/
     56 EFI_STATUS
     57 AnsiTestString (
     58   IN  TERMINAL_DEV    *TerminalDevice,
     59   IN  CHAR16          *WString
     60   )
     61 {
     62   CHAR8 GraphicChar;
     63 
     64   //
     65   // support three kind of character:
     66   // valid ascii, valid efi control char, valid text graphics.
     67   //
     68   for (; *WString != CHAR_NULL; WString++) {
     69 
     70     if ( !(TerminalIsValidAscii (*WString) ||
     71         TerminalIsValidEfiCntlChar (*WString) ||
     72         TerminalIsValidTextGraphics (*WString, &GraphicChar, NULL) )) {
     73 
     74       return EFI_UNSUPPORTED;
     75     }
     76   }
     77 
     78   return EFI_SUCCESS;
     79 }
     80