\r
\r
/**\r
- This function returns the list of supported languages, in the format specified\r
- in UEFI specification Appendix M.\r
-\r
- If HiiHandle is not a valid Handle in the default HII database, then ASSERT.\r
+ Retrieves a pointer to the a Null-terminated ASCII string containing the list \r
+ of languages that an HII handle in the HII Database supports. The returned \r
+ string is allocated using AllocatePool(). The caller is responsible for freeing\r
+ the returned string using FreePool(). The format of the returned string follows\r
+ the language format assumed the HII Database.\r
+ \r
+ If HiiHandle is NULL, then ASSERT().\r
\r
- @param HiiHandle The HII package list handle.\r
+ @param[in] HiiHandle A handle that was previously registered in the HII Database.\r
\r
- @retval !NULL The supported languages.\r
- @retval NULL If Supported Languages can not be retrived.\r
+ @retval NULL HiiHandle is not registered in the HII database\r
+ @retval NULL There are not enough resources available to retrieve the suported \r
+ languages.\r
+ @retval NULL The list of suported languages could not be retrieved.\r
+ @retval Other A pointer to the Null-terminated ASCII string of supported languages.\r
\r
**/\r
CHAR8 *\r
EFIAPI\r
-HiiLibGetSupportedLanguages (\r
+HiiGetSupportedLanguages (\r
IN EFI_HII_HANDLE HiiHandle\r
)\r
{\r
EFI_STATUS Status;\r
- UINTN BufferSize;\r
- CHAR8 *LanguageString;\r
+ UINTN LanguageSize;\r
+ CHAR8 TempSupportedLanguages;\r
+ CHAR8 *SupportedLanguages;\r
+\r
+ ASSERT (HiiHandle != NULL);\r
\r
- ASSERT (IsHiiHandleRegistered (HiiHandle));\r
//\r
- // Collect current supported Languages for given HII handle\r
- // First try allocate 4K buffer to store the current supported languages.\r
+ // Retrieve the size required for the supported languages buffer.\r
//\r
- BufferSize = 0x1000;\r
- LanguageString = AllocateZeroPool (BufferSize);\r
- if (LanguageString == NULL) {\r
- return NULL;\r
- }\r
-\r
- Status = gHiiString->GetLanguages (gHiiString, HiiHandle, LanguageString, &BufferSize);\r
- \r
- if (Status == EFI_BUFFER_TOO_SMALL) {\r
- FreePool (LanguageString);\r
- LanguageString = AllocateZeroPool (BufferSize);\r
- if (LanguageString == NULL) {\r
- return NULL;\r
- }\r
-\r
- Status = gHiiString->GetLanguages (gHiiString, HiiHandle, LanguageString, &BufferSize);\r
- }\r
-\r
- if (EFI_ERROR (Status)) {\r
- LanguageString = NULL;\r
- }\r
-\r
- return LanguageString;\r
-}\r
-\r
-\r
-/**\r
- This function returns the number of supported languages on HiiHandle.\r
-\r
- If HiiHandle is not a valid Handle in the default HII database, then ASSERT.\r
- If not enough resource to complete the operation, then ASSERT.\r
-\r
- @param HiiHandle The HII package list handle.\r
-\r
- @return The number of supported languages.\r
-\r
-**/\r
-UINT16\r
-EFIAPI\r
-HiiLibGetSupportedLanguageNumber (\r
- IN EFI_HII_HANDLE HiiHandle\r
- )\r
-{\r
- CHAR8 *Languages;\r
- CHAR8 *LanguageString;\r
- UINT16 LangNumber;\r
- CHAR8 *Lang;\r
-\r
- Languages = HiiLibGetSupportedLanguages (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
- HiiLibGetNextLanguage (&LanguageString, Lang);\r
- LangNumber++;\r
- }\r
+ LanguageSize = 0;\r
+ Status = gHiiString->GetLanguages (gHiiString, HiiHandle, &TempSupportedLanguages, &LanguageSize);\r
\r
- FreePool (Lang);\r
- }\r
- FreePool (Languages);\r
-\r
- return LangNumber;\r
-}\r
-\r
-/**\r
- This function returns the list of supported 2nd languages, in the format specified\r
- in UEFI specification Appendix M.\r
-\r
- If HiiHandle is not a valid Handle in the default HII database, then ASSERT.\r
- If not enough resource to complete the operation, then ASSERT.\r
-\r
- @param HiiHandle The HII package list handle.\r
- @param FirstLanguage Pointer to language name buffer.\r
- \r
- @return The supported languages.\r
-\r
-**/\r
-CHAR8 *\r
-EFIAPI\r
-HiiLibGetSupportedSecondaryLanguages (\r
- IN EFI_HII_HANDLE HiiHandle,\r
- IN CONST CHAR8 *FirstLanguage\r
- )\r
-{\r
- EFI_STATUS Status;\r
- UINTN BufferSize;\r
- CHAR8 *LanguageString;\r
-\r
- ASSERT (HiiHandle != NULL);\r
- ASSERT (IsHiiHandleRegistered (HiiHandle));\r
//\r
- // Collect current supported 2nd Languages for given HII handle\r
- // First try allocate 4K buffer to store the current supported 2nd languages.\r
+ // If GetLanguages() returns EFI_SUCCESS for a zero size, \r
+ // then there are no supported languages registered for HiiHandle. If GetLanguages() \r
+ // returns an error other than EFI_BUFFER_TOO_SMALL, then HiiHandle is not present\r
+ // in the HII Database\r
//\r
- BufferSize = 0x1000;\r
- LanguageString = AllocateZeroPool (BufferSize);\r
- if (LanguageString == NULL) {\r
+ if (Status != EFI_BUFFER_TOO_SMALL) {\r
+ //\r
+ // Return NULL if the size can not be retrieved, or if HiiHandle is not in the HII Database\r
+ //\r
return NULL;\r
}\r
\r
- Status = gHiiString->GetSecondaryLanguages (gHiiString, HiiHandle, FirstLanguage, LanguageString, &BufferSize);\r
- \r
- if (Status == EFI_BUFFER_TOO_SMALL) {\r
- FreePool (LanguageString);\r
- LanguageString = AllocateZeroPool (BufferSize);\r
- if (LanguageString == NULL) {\r
- return NULL;\r
- }\r
-\r
- Status = gHiiString->GetSecondaryLanguages (gHiiString, HiiHandle, FirstLanguage, LanguageString, &BufferSize);\r
+ //\r
+ // Allocate the supported languages buffer.\r
+ //\r
+ SupportedLanguages = AllocateZeroPool (LanguageSize);\r
+ if (SupportedLanguages == NULL) {\r
+ //\r
+ // Return NULL if allocation fails.\r
+ //\r
+ return NULL;\r
}\r
\r
+ //\r
+ // Retrieve the supported languages string\r
+ //\r
+ Status = gHiiString->GetLanguages (gHiiString, HiiHandle, SupportedLanguages, &LanguageSize);\r
if (EFI_ERROR (Status)) {\r
- LanguageString = NULL;\r
+ //\r
+ // Free the buffer and return NULL if the supported languages can not be retrieved.\r
+ //\r
+ FreePool (SupportedLanguages);\r
+ return NULL;\r
}\r
\r
- return LanguageString;\r
+ //\r
+ // Return the Null-terminated ASCII string of supported languages\r
+ //\r
+ return SupportedLanguages;\r
}\r
\r
-\r
-\r
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