MdeModulePkg/Universal/BdsDxe/String.c

   1 /*++
   2
   3 Copyright (c) 2004 - 2008, 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   String.c
  15
  16 Abstract:
  17
  18   String support
  19
  20 --*/
  21
  22 #include "Bds.h"
  23 #include "Language.h"
  24 #include "FrontPage.h"
  25
  26 EFI_HII_HANDLE gStringPackHandle;
  27
  28 EFI_GUID mBdsStringPackGuid = {
  29   0x7bac95d3, 0xddf, 0x42f3, 0x9e, 0x24, 0x7c, 0x64, 0x49, 0x40, 0x37, 0x9a
  30 };
  31
  32 EFI_STATUS
  33 InitializeStringSupport (
  34   VOID
  35   )
  36 /*++
  37
  38 Routine Description:
  39   Initialize HII global accessor for string support
  40
  41 Arguments:
  42   None
  43
  44 Returns:
  45   EFI_SUCCESS - String support initialize success.
  46
  47 --*/
  48 {
  49   EFI_STATUS                   Status;
  50   EFI_HANDLE                   DriverHandle;
  51   EFI_HII_PACKAGE_LIST_HEADER  *PackageList;
  52
  53   Status = gBS->LocateProtocol (&gEfiHiiDatabaseProtocolGuid, NULL, (VOID **) &gHiiDatabase);
  54   if (EFI_ERROR (Status)) {
  55     return Status;
  56   }
  57
  58   //
  59   // Create driver handle used by HII database
  60   //
  61   Status = HiiLibCreateHiiDriverHandle (&DriverHandle);
  62   if (EFI_ERROR (Status)) {
  63     return Status;
  64   }
  65
  66   PackageList = PreparePackageList (1, &mBdsStringPackGuid, &BdsStrings);
  67   ASSERT (PackageList != NULL);
  68
  69   Status = gHiiDatabase->NewPackageList (
  70                            gHiiDatabase,
  71                            PackageList,
  72                            DriverHandle,
  73                            &gStringPackHandle
  74                            );
  75
  76   FreePool (PackageList);
  77   return Status;
  78 }
  79
  80 CHAR16 *
  81 GetStringById (
  82   IN  EFI_STRING_ID   Id
  83   )
  84 /*++
  85
  86 Routine Description:
  87   Get string by string id from HII Interface
  88
  89 Arguments:
  90   Id       - String ID.
  91
  92 Returns:
  93   CHAR16 * - String from ID.
  94   NULL     - If error occurs.
  95
  96 --*/
  97 {
  98   CHAR16 *String;
  99
 100   String = NULL;
 101   GetStringFromHandle (gStringPackHandle, Id, &String);
 102
 103   return String;
 104 }