MdeModulePkg/Universal/HiiDatabaseDxe/R8Lib.c

   1 /** @file
   2 Implement a utility function named R8_EfiLibCompareLanguage.
   3
   4   Copyright (c) 2007 - 2008, Intel Corporation
   5
   6   All rights reserved. This program and the accompanying materials
   7   are licensed and made available under the terms and conditions of the BSD License
   8   which accompanies this distribution.  The full text of the license may be found at
   9   http://opensource.org/licenses/bsd-license.php
  10
  11   THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
  12   WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
  13
  14
  15 **/
  16
  17 #include "HiiDatabase.h"
  18
  19
  20 /**
  21   Compare whether two names of languages are identical.
  22
  23   @param  Language1              Name of language 1
  24   @param  Language2              Name of language 2
  25
  26   @retval TRUE                   same
  27   @retval FALSE                  not same
  28
  29 **/
  30 BOOLEAN
  31 R8_EfiLibCompareLanguage (
  32   IN  CHAR8  *Language1,
  33   IN  CHAR8  *Language2
  34   )
  35 {
  36   //
  37   // Porting Guide:
  38   // This library interface is simply obsolete.
  39   // Include the source code to user code.
  40   //
  41   UINTN Index;
  42
  43   for (Index = 0; (Language1[Index] != 0) && (Language2[Index] != 0); Index++) {
  44     if (Language1[Index] != Language2[Index]) {
  45       return FALSE;
  46     }
  47   }
  48
  49   if (((Language1[Index] == 0) && (Language2[Index] == 0))   ||
  50           ((Language1[Index] == 0) && (Language2[Index] != ';')) ||
  51           ((Language1[Index] == ';') && (Language2[Index] != 0)) ||
  52           ((Language1[Index] == ';') && (Language2[Index] != ';'))) {
  53     return TRUE;
  54   }
  55
  56   return FALSE;
  57 }
  58
  59
  60 /**
  61   Determine what is the current language setting. The space reserved for Lang
  62   must be at least RFC_3066_ENTRY_SIZE bytes;
  63
  64   If Lang is NULL, then ASSERT.
  65
  66   @param  Lang                   Pointer of system language. Lang will always be filled with
  67                                  a valid RFC 3066 language string. If "PlatformLang" is not
  68                                  set in the system, the default language specifed by PcdUefiVariableDefaultPlatformLang
  69                                  is returned.
  70
  71   @return  EFI_SUCCESS     If the EFI Variable with "PlatformLang" is set and return in Lang.
  72   @return  EFI_NOT_FOUND If the EFI Variable with "PlatformLang" is not set, but a valid default language is return in Lang.
  73
  74 **/
  75 EFI_STATUS
  76 EFIAPI
  77 GetCurrentLanguage (
  78   OUT     CHAR8               *Lang
  79   )
  80 {
  81   EFI_STATUS  Status;
  82   UINTN       Size;
  83
  84   ASSERT (Lang != NULL);
  85
  86   //
  87   // Get current language setting
  88   //
  89   Size = RFC_3066_ENTRY_SIZE;
  90   Status = gRT->GetVariable (
  91                   L"PlatformLang",
  92                   &gEfiGlobalVariableGuid,
  93                   NULL,
  94                   &Size,
  95                   Lang
  96                   );
  97
  98   if (EFI_ERROR (Status)) {
  99     AsciiStrCpy (Lang, (CHAR8 *) PcdGetPtr (PcdUefiVariableDefaultPlatformLang));
 100   }
 101
 102   return Status;
 103 }
 104
 105