EdkCompatibilityPkg/Compatibility/FrameworkHiiToUefiHiiThunk/UefiIfrParserCommon.c

   1 #include <PiDxe.h>
   2 #include <Library/DebugLib.h>
   3 #include <Library/HiiLib.h>
   4 #include <Library/MemoryAllocationLib.h>
   5 #include <Library/UefiBootServicesTableLib.h>
   6
   7
   8 CHAR16            *gEmptyString = L" ";
   9
  10 /**
  11   Get the string based on the StringId and HII Package List Handle.
  12
  13   @param  Token                  The String's ID.
  14   @param  HiiHandle              The package list in the HII database to search for
  15                                  the specified string.
  16
  17   @return The output string.
  18
  19 **/
  20 CHAR16 *
  21 GetToken (
  22   IN  EFI_STRING_ID                Token,
  23   IN  EFI_HII_HANDLE               HiiHandle
  24   )
  25 {
  26   EFI_STATUS  Status;
  27   CHAR16      *String;
  28   UINTN       BufferLength;
  29
  30   //
  31   // Set default string size assumption at no more than 256 bytes
  32   //
  33   BufferLength = 0x100;
  34   String = AllocateZeroPool (BufferLength);
  35   ASSERT (String != NULL);
  36
  37   Status = HiiLibGetString (HiiHandle, Token, String, &BufferLength);
  38
  39   if (Status == EFI_BUFFER_TOO_SMALL) {
  40     gBS->FreePool (String);
  41     String = AllocateZeroPool (BufferLength);
  42     ASSERT (String != NULL);
  43
  44     Status = HiiLibGetString (HiiHandle, Token, String, &BufferLength);
  45   }
  46   ASSERT_EFI_ERROR (Status);
  47
  48   return String;
  49 }
  50
  51 /**
  52   Create a new string in HII Package List.
  53
  54   @param  String                 The String to be added
  55   @param  HiiHandle              The package list in the HII database to insert the
  56                                  specified string.
  57
  58   @return The output string.
  59
  60 **/
  61 EFI_STRING_ID
  62 NewString (
  63   IN  CHAR16                   *String,
  64   IN  EFI_HII_HANDLE           HiiHandle
  65   )
  66 {
  67   EFI_STRING_ID  StringId;
  68   EFI_STATUS     Status;
  69
  70   StringId = 0;
  71   Status = HiiLibNewString (HiiHandle, &StringId, String);
  72   ASSERT_EFI_ERROR (Status);
  73
  74   return StringId;
  75 }
  76
  77
  78