Nt32Pkg/PlatformBdsDxe/Generic/Language.c

   1 /*++
   2
   3 Copyright (c) 2006 - 2007, 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   language.c
  15
  16 Abstract:
  17
  18  Language settings
  19
  20 Revision History
  21
  22 --*/
  23
  24 //
  25 // Include common header file for this module.
  26 //
  27 #include "CommonHeader.h"
  28
  29 #include "BdsString.h"
  30 #include "Language.h"
  31
  32 //
  33 // Default language code, currently is English
  34 //
  35 CHAR8 *mDefaultLangCode = "eng";
  36
  37
  38 VOID
  39 InitializeLanguage (
  40   BOOLEAN LangCodesSettingRequired
  41   )
  42 /*++
  43
  44 Routine Description:
  45   Determine the current language that will be used
  46   based on language related EFI Variables
  47
  48 Arguments:
  49   LangCodesSettingRequired - If required to set LangCode variable
  50
  51 Returns:
  52
  53 --*/
  54 {
  55   EFI_STATUS  Status;
  56   UINTN       Index;
  57   UINTN       Size;
  58   CHAR8       LangCode[ISO_639_2_ENTRY_SIZE];
  59   CHAR8       *LangCodes;
  60   CHAR16      *LanguageString;
  61
  62   LanguageString  = NULL;
  63   LangCodes       = NULL;
  64
  65   //
  66   // Collect the languages from what our current Language support is based on our VFR
  67   //
  68   gHii->GetPrimaryLanguages (gHii, gStringPackHandle, &LanguageString);
  69
  70   LangCodes = AllocatePool (StrLen (LanguageString));
  71   ASSERT (LangCodes);
  72
  73   //
  74   // Convert LanguageString from Unicode to EFI defined ASCII LangCodes
  75   //
  76   for (Index = 0; LanguageString[Index] != 0x0000; Index++) {
  77     LangCodes[Index] = (CHAR8) LanguageString[Index];
  78   }
  79
  80   LangCodes[Index] = 0;
  81
  82   if (LangCodesSettingRequired) {
  83     Status = gRT->SetVariable (
  84                     L"LangCodes",
  85                     &gEfiGlobalVariableGuid,
  86                     EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS,
  87                     AsciiStrLen (LangCodes),
  88                     LangCodes
  89                     );
  90   }
  91   //
  92   // Find current LangCode from Lang NV Variable
  93   //
  94   Size = ISO_639_2_ENTRY_SIZE;
  95   Status = gRT->GetVariable (
  96                   L"Lang",
  97                   &gEfiGlobalVariableGuid,
  98                   NULL,
  99                   &Size,
 100                   &LangCode
 101                   );
 102
 103   if (!EFI_ERROR (Status)) {
 104     Status = EFI_NOT_FOUND;
 105     for (Index = 0; LangCodes[Index] != 0; Index += ISO_639_2_ENTRY_SIZE) {
 106       if (CompareMem (&LangCodes[Index], LangCode, ISO_639_2_ENTRY_SIZE) == 0) {
 107         Status = EFI_SUCCESS;
 108         break;
 109       }
 110     }
 111   }
 112   //
 113   // If we cannot get language code from Lang variable,
 114   // or LangCode cannot be found from language table,
 115   // set the mDefaultLangCode to Lang variable.
 116   //
 117   if (EFI_ERROR (Status)) {
 118     Status = gRT->SetVariable (
 119                     L"Lang",
 120                     &gEfiGlobalVariableGuid,
 121                     EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS,
 122                     ISO_639_2_ENTRY_SIZE,
 123                     mDefaultLangCode
 124                     );
 125   }
 126
 127   if (LangCodes) {
 128     FreePool (LangCodes);
 129   }
 130
 131   if (LanguageString != NULL) {
 132     FreePool (LanguageString);
 133   }
 134
 135 }