EmulatorPkg: Replace BSD License with BSD+Patent License

[mirror_edk2.git] / EmulatorPkg / MiscSubClassPlatformDxe / MiscNumberOfInstallableLanguagesFunction.c

/** @file\r
  This driver parses the mSmbiosMiscDataTable structure and reports\r
  any generated data.\r
\r
  Copyright (c) 2009 - 2011, Intel Corporation. All rights reserved.<BR>\r
  SPDX-License-Identifier: BSD-2-Clause-Patent\r
\r
**/\r
\r
#include "MiscSubClassDriver.h"\r
/*++\r
  Check whether the language is supported for given HII handle\r
\r
  @param   HiiHandle     The HII package list handle.\r
  @param   Offset        The offest of current lanague in the supported languages.\r
  @param   CurrentLang   The language code.\r
\r
  @retval  TRUE          Supported.\r
  @retval  FALSE         Not Supported.\r
\r
**/\r
VOID\r
EFIAPI\r
CurrentLanguageMatch (\r
  IN  EFI_HII_HANDLE                   HiiHandle,\r
  OUT UINT16                           *Offset,\r
  OUT CHAR8                            *CurrentLang\r
  )\r
{\r
  CHAR8     *DefaultLang;\r
  CHAR8     *BestLanguage;\r
  CHAR8     *Languages;\r
  CHAR8     *MatchLang;\r
  CHAR8     *EndMatchLang;\r
  UINTN     CompareLength;\r
\r
  Languages = HiiGetSupportedLanguages (HiiHandle);\r
  if (Languages == NULL) {\r
    return;\r
  }\r
\r
  CurrentLang  = GetEfiGlobalVariable (L"PlatformLang");\r
  DefaultLang  = (CHAR8 *) PcdGetPtr (PcdUefiVariableDefaultPlatformLang);\r
  BestLanguage = GetBestLanguage (\r
                   Languages,\r
                   FALSE,\r
                   (CurrentLang != NULL) ? CurrentLang : "",\r
                   DefaultLang,\r
                   NULL\r
                   );\r
  if (BestLanguage != NULL) {\r
    //\r
    // Find the best matching RFC 4646 language, compute the offset.\r
    //\r
    CompareLength = AsciiStrLen (BestLanguage);\r
    for (MatchLang = Languages, (*Offset) = 0; MatchLang != '\0'; (*Offset)++) {\r
      //\r
      // Seek to the end of current match language.\r
      //\r
      for (EndMatchLang = MatchLang; *EndMatchLang != '\0' && *EndMatchLang != ';'; EndMatchLang++);\r
\r
      if ((EndMatchLang == MatchLang + CompareLength) && AsciiStrnCmp(MatchLang, BestLanguage, CompareLength) == 0) {\r
        //\r
        // Find the current best Language in the supported languages\r
        //\r
        break;\r
      }\r
      //\r
      // best language match be in the supported language.\r
      //\r
      ASSERT (*EndMatchLang == ';');\r
      MatchLang = EndMatchLang + 1;\r
    }\r
    FreePool (BestLanguage);\r
  }\r
\r
  FreePool (Languages);\r
  if (CurrentLang != NULL) {\r
    FreePool (CurrentLang);\r
  }\r
  return ;\r
}\r
\r
\r
/**\r
  Get next language from language code list (with separator ';').\r
\r
  @param  LangCode       Input: point to first language in the list. On\r
                         Otput: point to next language in the list, or\r
                                NULL if no more language in the list.\r
  @param  Lang           The first language in the list.\r
\r
**/\r
VOID\r
EFIAPI\r
GetNextLanguage (\r
  IN OUT CHAR8      **LangCode,\r
  OUT CHAR8         *Lang\r
  )\r
{\r
  UINTN  Index;\r
  CHAR8  *StringPtr;\r
\r
  ASSERT (LangCode != NULL);\r
  ASSERT (*LangCode != NULL);\r
  ASSERT (Lang != NULL);\r
\r
  Index     = 0;\r
  StringPtr = *LangCode;\r
  while (StringPtr[Index] != 0 && StringPtr[Index] != ';') {\r
    Index++;\r
  }\r
\r
  CopyMem (Lang, StringPtr, Index);\r
  Lang[Index] = 0;\r
\r
  if (StringPtr[Index] == ';') {\r
    Index++;\r
  }\r
  *LangCode = StringPtr + Index;\r
}\r
\r
/**\r
  This function returns the number of supported languages on HiiHandle.\r
\r
  @param   HiiHandle    The HII package list handle.\r
\r
  @retval  The number of supported languages.\r
\r
**/\r
UINT16\r
EFIAPI\r
GetSupportedLanguageNumber (\r
  IN EFI_HII_HANDLE    HiiHandle\r
  )\r
{\r
  CHAR8   *Lang;\r
  CHAR8   *Languages;\r
  CHAR8   *LanguageString;\r
  UINT16  LangNumber;\r
\r
  Languages = HiiGetSupportedLanguages (HiiHandle);\r
  if (Languages == NULL) {\r
    return 0;\r
  }\r
\r
  LangNumber = 0;\r
  Lang = AllocatePool (AsciiStrSize (Languages));\r
  if (Lang != NULL) {\r
    LanguageString = Languages;\r
    while (*LanguageString != 0) {\r
      GetNextLanguage (&LanguageString, Lang);\r
      LangNumber++;\r
    }\r
    FreePool (Lang);\r
  }\r
  FreePool (Languages);\r
  return LangNumber;\r
}\r
\r
\r
/**\r
  This function makes boot time changes to the contents of the\r
  MiscNumberOfInstallableLanguages (Type 13).\r
\r
  @param  RecordData                 Pointer to copy of RecordData from the Data Table.\r
\r
  @retval EFI_SUCCESS                All parameters were valid.\r
  @retval EFI_UNSUPPORTED            Unexpected RecordType value.\r
  @retval EFI_INVALID_PARAMETER      Invalid parameter was found.\r
\r
**/\r
MISC_SMBIOS_TABLE_FUNCTION(NumberOfInstallableLanguages)\r
{\r
  UINTN                                     LangStrLen;\r
  CHAR8                                     CurrentLang[SMBIOS_STRING_MAX_LENGTH + 1];\r
  CHAR8                                     *OptionalStrStart;\r
  UINT16                                    Offset;\r
  EFI_STATUS                                Status;\r
  EFI_SMBIOS_HANDLE                         SmbiosHandle;\r
  SMBIOS_TABLE_TYPE13                       *SmbiosRecord;\r
  EFI_MISC_NUMBER_OF_INSTALLABLE_LANGUAGES  *ForType13InputData;\r
\r
  ForType13InputData = (EFI_MISC_NUMBER_OF_INSTALLABLE_LANGUAGES *)RecordData;\r
\r
  //\r
  // First check for invalid parameters.\r
  //\r
  if (RecordData == NULL) {\r
    return EFI_INVALID_PARAMETER;\r
  }\r
\r
  ForType13InputData->NumberOfInstallableLanguages = GetSupportedLanguageNumber (mHiiHandle);\r
\r
  //\r
  // Try to check if current langcode matches with the langcodes in installed languages\r
  //\r
  ZeroMem(CurrentLang, SMBIOS_STRING_MAX_LENGTH + 1);\r
  CurrentLanguageMatch (mHiiHandle, &Offset, CurrentLang);\r
  LangStrLen = AsciiStrLen(CurrentLang);\r
\r
  //\r
  // Two zeros following the last string.\r
  //\r
  SmbiosRecord = AllocatePool(sizeof (SMBIOS_TABLE_TYPE13) + LangStrLen + 1 + 1);\r
  ZeroMem(SmbiosRecord, sizeof (SMBIOS_TABLE_TYPE13) + LangStrLen + 1 + 1);\r
\r
  SmbiosRecord->Hdr.Type = EFI_SMBIOS_TYPE_BIOS_LANGUAGE_INFORMATION;\r
  SmbiosRecord->Hdr.Length = sizeof (SMBIOS_TABLE_TYPE13);\r
  //\r
  // Make handle chosen by smbios protocol.add automatically.\r
  //\r
  SmbiosRecord->Hdr.Handle = 0;\r
\r
  SmbiosRecord->InstallableLanguages = (UINT8)ForType13InputData->NumberOfInstallableLanguages;\r
  SmbiosRecord->Flags = (UINT8)ForType13InputData->LanguageFlags.AbbreviatedLanguageFormat;\r
  SmbiosRecord->CurrentLanguages = 1;\r
  OptionalStrStart = (CHAR8 *)(SmbiosRecord + 1);\r
  AsciiStrCpy(OptionalStrStart, CurrentLang);\r
  //\r
  // Now we have got the full smbios record, call smbios protocol to add this record.\r
  //\r
  Status = AddSmbiosRecord (Smbios, &SmbiosHandle, (EFI_SMBIOS_TABLE_HEADER *) SmbiosRecord);\r
\r
  FreePool(SmbiosRecord);\r
  return Status;\r
}\r