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/*++
Copyright (c) 2009, Intel Corporation. All rights reserved. <BR>
This software and associated documentation (if any) is furnished
under a license and may only be used or copied in accordance
with the terms of the license. Except as permitted by such
license, no part of this software or documentation may be
reproduced, stored in a retrieval system, or transmitted in any
form or by any means without the express written consent of
Intel Corporation.
Module Name:
MiscNumberOfInstallableLanguagesFunction.c
Abstract:
This driver parses the mSmbiosMiscDataTable structure and reports
any generated data.
--*/
#include "MiscSubclassDriver.h"
/*++
Check whether the language is supported for given HII handle
@param HiiHandle The HII package list handle.
@param Offset The offest of current lanague in the supported languages.
@param CurrentLang The language code.
@retval TRUE Supported.
@retval FALSE Not Supported.
--*/
VOID
EFIAPI
CurrentLanguageMatch (
IN EFI_HII_HANDLE HiiHandle,
OUT UINT16 *Offset,
OUT CHAR8 *CurrentLang
)
{
CHAR8 *DefaultLang;
CHAR8 *BestLanguage;
CHAR8 *Languages;
CHAR8 *MatchLang;
CHAR8 *EndMatchLang;
UINTN CompareLength;
Languages = HiiGetSupportedLanguages (HiiHandle);
if (Languages == NULL) {
return;
}
CurrentLang = GetEfiGlobalVariable (L"PlatformLang");
DefaultLang = (CHAR8 *) PcdGetPtr (PcdUefiVariableDefaultPlatformLang);
BestLanguage = GetBestLanguage (
Languages,
FALSE,
(CurrentLang != NULL) ? CurrentLang : "",
DefaultLang,
NULL
);
if (BestLanguage != NULL) {
//
// Find the best matching RFC 4646 language, compute the offset.
//
CompareLength = AsciiStrLen (BestLanguage);
for (MatchLang = Languages, (*Offset) = 0; MatchLang != '\0'; (*Offset)++) {
//
// Seek to the end of current match language.
//
for (EndMatchLang = MatchLang; *EndMatchLang != '\0' && *EndMatchLang != ';'; EndMatchLang++);
if ((EndMatchLang == MatchLang + CompareLength) && AsciiStrnCmp(MatchLang, BestLanguage, CompareLength) == 0) {
//
// Find the current best Language in the supported languages
//
break;
}
//
// best language match be in the supported language.
//
ASSERT (*EndMatchLang == ';');
MatchLang = EndMatchLang + 1;
}
FreePool (BestLanguage);
}
FreePool (Languages);
if (CurrentLang != NULL) {
FreePool (CurrentLang);
}
return ;
}
/**
Get next language from language code list (with separator ';').
@param LangCode Input: point to first language in the list. On
Otput: point to next language in the list, or
NULL if no more language in the list.
@param Lang The first language in the list.
**/
VOID
EFIAPI
GetNextLanguage (
IN OUT CHAR8 **LangCode,
OUT CHAR8 *Lang
)
{
UINTN Index;
CHAR8 *StringPtr;
ASSERT (LangCode != NULL);
ASSERT (*LangCode != NULL);
ASSERT (Lang != NULL);
Index = 0;
StringPtr = *LangCode;
while (StringPtr[Index] != 0 && StringPtr[Index] != ';') {
Index++;
}
CopyMem (Lang, StringPtr, Index);
Lang[Index] = 0;
if (StringPtr[Index] == ';') {
Index++;
}
*LangCode = StringPtr + Index;
}
/**
This function returns the number of supported languages on HiiHandle.
@param HiiHandle The HII package list handle.
@retval The number of supported languages.
**/
UINT16
EFIAPI
GetSupportedLanguageNumber (
IN EFI_HII_HANDLE HiiHandle
)
{
CHAR8 *Lang;
CHAR8 *Languages;
CHAR8 *LanguageString;
UINT16 LangNumber;
Languages = HiiGetSupportedLanguages (HiiHandle);
if (Languages == NULL) {
return 0;
}
LangNumber = 0;
Lang = AllocatePool (AsciiStrSize (Languages));
if (Lang != NULL) {
LanguageString = Languages;
while (*LanguageString != 0) {
GetNextLanguage (&LanguageString, Lang);
LangNumber++;
}
FreePool (Lang);
}
FreePool (Languages);
return LangNumber;
}
/**
This function makes boot time changes to the contents of the
MiscNumberOfInstallableLanguages (Type 13).
@param RecordData Pointer to copy of RecordData from the Data Table.
@retval EFI_SUCCESS All parameters were valid.
@retval EFI_UNSUPPORTED Unexpected RecordType value.
@retval EFI_INVALID_PARAMETER Invalid parameter was found.
**/
MISC_SMBIOS_TABLE_FUNCTION(NumberOfInstallableLanguages)
{
UINTN LangStrLen;
CHAR8 CurrentLang[SMBIOS_STRING_MAX_LENGTH + 1];
CHAR8 *OptionalStrStart;
UINT16 Offset;
EFI_STATUS Status;
EFI_SMBIOS_HANDLE SmbiosHandle;
SMBIOS_TABLE_TYPE13 *SmbiosRecord;
EFI_MISC_NUMBER_OF_INSTALLABLE_LANGUAGES *ForType13InputData;
ForType13InputData = (EFI_MISC_NUMBER_OF_INSTALLABLE_LANGUAGES *)RecordData;
//
// First check for invalid parameters.
//
if (RecordData == NULL) {
return EFI_INVALID_PARAMETER;
}
ForType13InputData->NumberOfInstallableLanguages = GetSupportedLanguageNumber (mHiiHandle);
//
// Try to check if current langcode matches with the langcodes in installed languages
//
ZeroMem(CurrentLang, SMBIOS_STRING_MAX_LENGTH + 1);
CurrentLanguageMatch (mHiiHandle, &Offset, CurrentLang);
LangStrLen = AsciiStrLen(CurrentLang);
//
// Two zeros following the last string.
//
SmbiosRecord = AllocatePool(sizeof (SMBIOS_TABLE_TYPE13) + LangStrLen + 1 + 1);
ZeroMem(SmbiosRecord, sizeof (SMBIOS_TABLE_TYPE13) + LangStrLen + 1 + 1);
SmbiosRecord->Hdr.Type = EFI_SMBIOS_TYPE_BIOS_LANGUAGE_INFORMATION;
SmbiosRecord->Hdr.Length = sizeof (SMBIOS_TABLE_TYPE13);
//
// Make handle chosen by smbios protocol.add automatically.
//
SmbiosRecord->Hdr.Handle = 0;
SmbiosRecord->InstallableLanguages = (UINT8)ForType13InputData->NumberOfInstallableLanguages;
SmbiosRecord->Flags = (UINT8)ForType13InputData->LanguageFlags.AbbreviatedLanguageFormat;
SmbiosRecord->CurrentLanguages = 1;
OptionalStrStart = (CHAR8 *)(SmbiosRecord + 1);
AsciiStrCpy(OptionalStrStart, CurrentLang);
//
// Now we have got the full smbios record, call smbios protocol to add this record.
//
SmbiosHandle = 0;
Status = Smbios-> Add(
Smbios,
NULL,
&SmbiosHandle,
(EFI_SMBIOS_TABLE_HEADER *) SmbiosRecord
);
FreePool(SmbiosRecord);
return Status;
}
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