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/** @file
Language related HII Library implementation.
Copyright (c) 2006 - 2008, Intel Corporation<BR>
All rights reserved. This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
which accompanies this distribution. The full text of the license may be found at
http://opensource.org/licenses/bsd-license.php
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
**/
#include "InternalHiiLib.h"
/**
Get next language from language code list (with separator ';').
If LangCode is NULL, then ASSERT.
If Lang is NULL, then ASSERT.
@param LangCode On input: point to first language in the list. On
output: 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
HiiLibGetNextLanguage (
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 list of supported languages, in the format specified
in UEFI specification Appendix M.
If HiiHandle is not a valid Handle in the default HII database, then ASSERT.
@param HiiHandle The HII package list handle.
@retval !NULL The supported languages.
@retval NULL If Supported Languages can not be retrived.
**/
CHAR8 *
EFIAPI
HiiLibGetSupportedLanguages (
IN EFI_HII_HANDLE HiiHandle
)
{
EFI_STATUS Status;
UINTN BufferSize;
CHAR8 *LanguageString;
ASSERT (IsHiiHandleRegistered (HiiHandle));
//
// Collect current supported Languages for given HII handle
// First try allocate 4K buffer to store the current supported languages.
//
BufferSize = 0x1000;
LanguageString = AllocateZeroPool (BufferSize);
if (LanguageString == NULL) {
return NULL;
}
Status = mHiiStringProt->GetLanguages (mHiiStringProt, HiiHandle, LanguageString, &BufferSize);
if (Status == EFI_BUFFER_TOO_SMALL) {
FreePool (LanguageString);
LanguageString = AllocateZeroPool (BufferSize);
if (LanguageString == NULL) {
return NULL;
}
Status = mHiiStringProt->GetLanguages (mHiiStringProt, HiiHandle, LanguageString, &BufferSize);
}
if (EFI_ERROR (Status)) {
LanguageString = NULL;
}
return LanguageString;
}
/**
This function returns the number of supported languages on HiiHandle.
If HiiHandle is not a valid Handle in the default HII database, then ASSERT.
If not enough resource to complete the operation, then ASSERT.
@param HiiHandle The HII package list handle.
@return The number of supported languages.
**/
UINT16
EFIAPI
HiiLibGetSupportedLanguageNumber (
IN EFI_HII_HANDLE HiiHandle
)
{
CHAR8 *Languages;
CHAR8 *LanguageString;
UINT16 LangNumber;
CHAR8 Lang[RFC_3066_ENTRY_SIZE];
Languages = HiiLibGetSupportedLanguages (HiiHandle);
if (Languages == NULL) {
return 0;
}
LangNumber = 0;
LanguageString = Languages;
while (*LanguageString != 0) {
HiiLibGetNextLanguage (&LanguageString, Lang);
LangNumber++;
}
FreePool (Languages);
return LangNumber;
}
/**
This function returns the list of supported 2nd languages, in the format specified
in UEFI specification Appendix M.
If HiiHandle is not a valid Handle in the default HII database, then ASSERT.
If not enough resource to complete the operation, then ASSERT.
@param HiiHandle The HII package list handle.
@param FirstLanguage Pointer to language name buffer.
@return The supported languages.
**/
CHAR8 *
EFIAPI
HiiLibGetSupportedSecondaryLanguages (
IN EFI_HII_HANDLE HiiHandle,
IN CONST CHAR8 *FirstLanguage
)
{
EFI_STATUS Status;
UINTN BufferSize;
CHAR8 *LanguageString;
ASSERT (HiiHandle != NULL);
ASSERT (IsHiiHandleRegistered (HiiHandle));
//
// Collect current supported 2nd Languages for given HII handle
// First try allocate 4K buffer to store the current supported 2nd languages.
//
BufferSize = 0x1000;
LanguageString = AllocateZeroPool (BufferSize);
if (LanguageString == NULL) {
return NULL;
}
Status = mHiiStringProt->GetSecondaryLanguages (mHiiStringProt, HiiHandle, FirstLanguage, LanguageString, &BufferSize);
if (Status == EFI_BUFFER_TOO_SMALL) {
FreePool (LanguageString);
LanguageString = AllocateZeroPool (BufferSize);
if (LanguageString == NULL) {
return NULL;
}
Status = mHiiStringProt->GetSecondaryLanguages (mHiiStringProt, HiiHandle, FirstLanguage, LanguageString, &BufferSize);
}
if (EFI_ERROR (Status)) {
LanguageString = NULL;
}
return LanguageString;
}
/**
Determine what is the current language setting. The space reserved for Lang
must be at least RFC_3066_ENTRY_SIZE bytes;
If Lang is NULL, then ASSERT.
@param Lang Pointer of system language. Lang will always be filled with
a valid RFC 3066 language string. If "PlatformLang" is not
set in the system, the default language specifed by PcdUefiVariableDefaultPlatformLang
is returned.
@return EFI_SUCCESS If the EFI Variable with "PlatformLang" is set and return in Lang.
@return EFI_NOT_FOUND If the EFI Variable with "PlatformLang" is not set, but a valid default language is return in Lang.
**/
EFI_STATUS
EFIAPI
GetCurrentLanguage (
OUT CHAR8 *Lang
)
{
EFI_STATUS Status;
UINTN Size;
ASSERT (Lang != NULL);
//
// Get current language setting
//
Size = RFC_3066_ENTRY_SIZE;
Status = gRT->GetVariable (
L"PlatformLang",
&gEfiGlobalVariableGuid,
NULL,
&Size,
Lang
);
if (EFI_ERROR (Status)) {
AsciiStrCpy (Lang, (CHAR8 *) PcdGetPtr (PcdUefiVariableDefaultPlatformLang));
}
return Status;
}
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