/** @file\r
Language settings\r
\r
-Copyright (c) 2004 - 2010, Intel Corporation. All rights reserved.<BR>\r
+Copyright (c) 2004 - 2013, Intel Corporation. All rights reserved.<BR>\r
This program and the accompanying materials\r
are licensed and made available under the terms and conditions of the BSD License\r
which accompanies this distribution. The full text of the license may be found at\r
*LangCode = StringPtr + Index;\r
}\r
\r
+/**\r
+ Check if lang is in supported language codes according to language string.\r
+\r
+ This code is used to check if lang is in in supported language codes. It can handle\r
+ RFC4646 and ISO639 language tags.\r
+ In ISO639 language tags, take 3-characters as a delimitation to find matched string.\r
+ In RFC4646 language tags, take semicolon as a delimitation to find matched string.\r
+\r
+ For example:\r
+ SupportedLang = "engfraengfra"\r
+ Iso639Language = TRUE\r
+ Lang = "eng", the return value is "TRUE", or\r
+ Lang = "chs", the return value is "FALSE".\r
+ Another example:\r
+ SupportedLang = "en;fr;en-US;fr-FR"\r
+ Iso639Language = FALSE\r
+ Lang = "en", the return value is "TRUE", or\r
+ Lang = "zh", the return value is "FALSE".\r
+\r
+ @param SupportedLang Platform supported language codes.\r
+ @param Lang Configured language.\r
+ @param Iso639Language A bool value to signify if the handler is operated on ISO639 or RFC4646.\r
+\r
+ @retval TRUE lang is in supported language codes.\r
+ @retval FALSE lang is not in supported language codes.\r
+\r
+**/\r
+BOOLEAN\r
+IsLangInSupportedLangCodes(\r
+ IN CHAR8 *SupportedLang,\r
+ IN CHAR8 *Lang,\r
+ IN BOOLEAN Iso639Language\r
+ ) \r
+{\r
+ UINTN Index;\r
+ UINTN CompareLength;\r
+ UINTN LanguageLength;\r
+\r
+ if (Iso639Language) {\r
+ CompareLength = ISO_639_2_ENTRY_SIZE;\r
+ for (Index = 0; Index < AsciiStrLen (SupportedLang); Index += CompareLength) {\r
+ if (AsciiStrnCmp (Lang, SupportedLang + Index, CompareLength) == 0) {\r
+ //\r
+ // Successfully find the Lang string in SupportedLang string.\r
+ //\r
+ return TRUE;\r
+ }\r
+ }\r
+ return FALSE;\r
+ } else {\r
+ //\r
+ // Compare RFC4646 language code\r
+ //\r
+ for (LanguageLength = 0; Lang[LanguageLength] != '\0'; LanguageLength++);\r
+\r
+ for (; *SupportedLang != '\0'; SupportedLang += CompareLength) {\r
+ //\r
+ // Skip ';' characters in SupportedLang\r
+ //\r
+ for (; *SupportedLang != '\0' && *SupportedLang == ';'; SupportedLang++);\r
+ //\r
+ // Determine the length of the next language code in SupportedLang\r
+ //\r
+ for (CompareLength = 0; SupportedLang[CompareLength] != '\0' && SupportedLang[CompareLength] != ';'; CompareLength++);\r
+ \r
+ if ((CompareLength == LanguageLength) && \r
+ (AsciiStrnCmp (Lang, SupportedLang, CompareLength) == 0)) {\r
+ //\r
+ // Successfully find the Lang string in SupportedLang string.\r
+ //\r
+ return TRUE;\r
+ }\r
+ }\r
+ return FALSE;\r
+ }\r
+}\r
+\r
+/**\r
+ Initialize Lang or PlatformLang variable, if Lang or PlatformLang variable is not found,\r
+ or it has been set to an unsupported value(not one of platform supported language codes),\r
+ set the default language code to it.\r
+\r
+ @param LangName Language name, L"Lang" or L"PlatformLang".\r
+ @param SupportedLang Platform supported language codes.\r
+ @param DefaultLang Default language code.\r
+ @param Iso639Language A bool value to signify if the handler is operated on ISO639 or RFC4646,\r
+ TRUE for L"Lang" LangName or FALSE for L"PlatformLang" LangName.\r
+\r
+**/\r
+\r
+VOID\r
+InitializeLangVariable (\r
+ IN CHAR16 *LangName,\r
+ IN CHAR8 *SupportedLang,\r
+ IN CHAR8 *DefaultLang, \r
+ IN BOOLEAN Iso639Language\r
+ )\r
+{\r
+ EFI_STATUS Status;\r
+ CHAR8 *Lang;\r
+\r
+ //\r
+ // Find current Lang or PlatformLang from EFI Variable.\r
+ //\r
+ Status = GetEfiGlobalVariable2 (LangName, &Lang, NULL);\r
+ //\r
+ // If Lang or PlatformLang variable is not found,\r
+ // or it has been set to an unsupported value(not one of the supported language codes),\r
+ // set the default language code to it.\r
+ //\r
+ if (EFI_ERROR (Status) || !IsLangInSupportedLangCodes (SupportedLang, Lang, Iso639Language)) {\r
+ //\r
+ // The default language code should be one of the supported language codes.\r
+ //\r
+ ASSERT (IsLangInSupportedLangCodes (SupportedLang, DefaultLang, Iso639Language));\r
+ Status = gRT->SetVariable (\r
+ LangName,\r
+ &gEfiGlobalVariableGuid,\r
+ EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS,\r
+ AsciiStrSize (DefaultLang),\r
+ DefaultLang\r
+ );\r
+ }\r
+\r
+ if (Lang != NULL) {\r
+ FreePool (Lang);\r
+ }\r
+}\r
+\r
/**\r
Determine the current language that will be used\r
based on language related EFI Variables.\r
\r
- @param LangCodesSettingRequired - If required to set LangCode variable\r
+ @param LangCodesSettingRequired - If required to set LangCodes variable\r
\r
**/\r
VOID\r
)\r
{\r
EFI_STATUS Status;\r
- UINTN Size;\r
- CHAR8 *Lang;\r
- CHAR8 LangCode[ISO_639_2_ENTRY_SIZE + 1];\r
CHAR8 *LangCodes;\r
- CHAR8 *PlatformLang;\r
CHAR8 *PlatformLangCodes;\r
- UINTN Index;\r
- BOOLEAN Invalid;\r
\r
ExportFonts ();\r
\r
LangCodes = (CHAR8 *)PcdGetPtr (PcdUefiVariableDefaultLangCodes);\r
+ PlatformLangCodes = (CHAR8 *)PcdGetPtr (PcdUefiVariableDefaultPlatformLangCodes);\r
if (LangCodesSettingRequired) {\r
if (!FeaturePcdGet (PcdUefiVariableDefaultLangDeprecate)) {\r
//\r
);\r
}\r
\r
-\r
- PlatformLangCodes = (CHAR8 *)PcdGetPtr (PcdUefiVariableDefaultPlatformLangCodes);\r
Status = gRT->SetVariable (\r
L"PlatformLangCodes",\r
&gEfiGlobalVariableGuid,\r
//\r
// UEFI 2.1 depricated this variable so we support turning it off\r
//\r
-\r
- //\r
- // Find current LangCode from Lang NV Variable\r
- //\r
- Size = ISO_639_2_ENTRY_SIZE + 1;\r
- Status = gRT->GetVariable (\r
- L"Lang",\r
- &gEfiGlobalVariableGuid,\r
- NULL,\r
- &Size,\r
- &LangCode\r
- );\r
- if (!EFI_ERROR (Status)) {\r
- Status = EFI_NOT_FOUND;\r
- for (Index = 0; LangCodes[Index] != 0; Index += ISO_639_2_ENTRY_SIZE) {\r
- if (CompareMem (&LangCodes[Index], LangCode, ISO_639_2_ENTRY_SIZE) == 0) {\r
- Status = EFI_SUCCESS;\r
- break;\r
- }\r
- }\r
- }\r
-\r
- //\r
- // If we cannot get language code from Lang variable,\r
- // or LangCode cannot be found from language table,\r
- // set the mDefaultLangCode to Lang variable.\r
- //\r
- if (EFI_ERROR (Status)) {\r
- Lang = (CHAR8 *)PcdGetPtr (PcdUefiVariableDefaultLang);\r
- Status = gRT->SetVariable (\r
- L"Lang",\r
- &gEfiGlobalVariableGuid,\r
- EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS,\r
- ISO_639_2_ENTRY_SIZE + 1,\r
- Lang\r
- );\r
- }\r
- }\r
-\r
- Invalid = FALSE;\r
- PlatformLang = BdsLibGetVariableAndSize (L"PlatformLang", &gEfiGlobalVariableGuid, &Size);\r
- if (PlatformLang != NULL) {\r
- //\r
- // Check Current PlatformLang value against PlatformLangCode. Need a library that is TBD\r
- // Set Invalid based on state of PlatformLang.\r
- //\r
-\r
- FreePool (PlatformLang);\r
- } else {\r
- // No valid variable is set\r
- Invalid = TRUE;\r
- }\r
-\r
- if (Invalid) {\r
- PlatformLang = (CHAR8 *)PcdGetPtr (PcdUefiVariableDefaultPlatformLang);\r
- Status = gRT->SetVariable (\r
- L"PlatformLang",\r
- &gEfiGlobalVariableGuid,\r
- EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS,\r
- AsciiStrSize (PlatformLang),\r
- PlatformLang\r
- );\r
+ InitializeLangVariable (L"Lang", LangCodes, (CHAR8 *) PcdGetPtr (PcdUefiVariableDefaultLang), TRUE);\r
}\r
+ InitializeLangVariable (L"PlatformLang", PlatformLangCodes, (CHAR8 *) PcdGetPtr (PcdUefiVariableDefaultPlatformLang), FALSE);\r
}\r
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