X-Git-Url: https://git.proxmox.com/?a=blobdiff_plain;f=FatPkg%2FEnhancedFatDxe%2FUnicodeCollation.c;h=61b9aab4d93a66296001cd0b2bd175490c826f60;hb=19d29d358f80a1f2b462d8a52943aae724b8702c;hp=4a849af2eb642e013345d686cc537128a8388ab4;hpb=8288dd3ef894b6a080cf3b61d02e9a27f01af742;p=mirror_edk2.git
diff --git a/FatPkg/EnhancedFatDxe/UnicodeCollation.c b/FatPkg/EnhancedFatDxe/UnicodeCollation.c
index 4a849af2eb..61b9aab4d9 100644
--- a/FatPkg/EnhancedFatDxe/UnicodeCollation.c
+++ b/FatPkg/EnhancedFatDxe/UnicodeCollation.c
@@ -1,144 +1,77 @@
/** @file
- Unicode Collation Library that hides the trival difference of Unicode Collation
+ Unicode Collation Support component that hides the trivial difference of Unicode Collation
and Unicode collation 2 Protocol.
- Copyright (c) 2007, Intel Corporation
- 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
+ Copyright (c) 2007 - 2013, Intel Corporation. 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.
+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 "Fat.h"
-STATIC EFI_UNICODE_COLLATION_PROTOCOL *mUnicodeCollationInterface = NULL;
+EFI_UNICODE_COLLATION_PROTOCOL *mUnicodeCollationInterface = NULL;
-typedef
-BOOLEAN
-(* SEARCH_LANG_CODE) (
- IN CONST CHAR8 *Languages,
- IN CONST CHAR8 *MatchLangCode
- );
-
-struct _UNICODE_INTERFACE {
- CHAR16 *VariableName;
- CHAR8 *DefaultLangCode;
- SEARCH_LANG_CODE SearchLangCode;
- EFI_GUID *UnicodeProtocolGuid;
-};
-
-typedef struct _UNICODE_INTERFACE UNICODE_INTERFACE;
-
-STATIC
-BOOLEAN
-SearchIso639LangCode (
- IN CONST CHAR8 *Languages,
- IN CONST CHAR8 *MatchLangCode
- )
-{
- CONST CHAR8 *LangCode;
-
- for (LangCode = Languages; *LangCode != '\0'; LangCode += 3) {
- if (CompareMem (LangCode, MatchLangCode, 3) == 0) {
- return TRUE;
- }
- }
-
- return FALSE;
-}
-
-STATIC
-BOOLEAN
-SearchRfc3066LangCode (
- IN CONST CHAR8 *Languages,
- IN CONST CHAR8 *MatchLangCode
- )
-{
- CHAR8 *SubStr;
- CHAR8 Terminal;
-
- SubStr = AsciiStrStr (Languages, MatchLangCode);
- if (SubStr == NULL) {
- return FALSE;
- }
+/**
+ Worker function to initialize Unicode Collation support.
- if (SubStr != Languages && *(SubStr - 1) != ';') {
- return FALSE;
- }
+ It tries to locate Unicode Collation (2) protocol and matches it with current
+ platform language code.
- Terminal = *(SubStr + AsciiStrLen (MatchLangCode));
- if (Terminal != '\0' && Terminal != ';') {
- return FALSE;
- }
+ @param AgentHandle The handle used to open Unicode Collation (2) protocol.
+ @param ProtocolGuid The pointer to Unicode Collation (2) protocol GUID.
+ @param VariableName The name of the RFC 4646 or ISO 639-2 language variable.
+ @param DefaultLanguage The default language in case the RFC 4646 or ISO 639-2 language is absent.
- return TRUE;
-}
+ @retval EFI_SUCCESS The Unicode Collation (2) protocol has been successfully located.
+ @retval Others The Unicode Collation (2) protocol has not been located.
-GLOBAL_REMOVE_IF_UNREFERENCED UNICODE_INTERFACE mIso639Lang = {
- L"Lang",
- (CHAR8 *) PcdGetPtr (PcdUefiVariableDefaultLang),
- SearchIso639LangCode,
- &gEfiUnicodeCollationProtocolGuid,
-};
-
-GLOBAL_REMOVE_IF_UNREFERENCED UNICODE_INTERFACE mRfc3066Lang = {
- L"PlatformLang",
- (CHAR8 *) PcdGetPtr (PcdUefiVariableDefaultPlatformLang),
- SearchRfc3066LangCode,
- &gEfiUnicodeCollation2ProtocolGuid,
-};
-
-STATIC
+**/
EFI_STATUS
-InitializeUnicodeCollationSupportWithConfig (
+InitializeUnicodeCollationSupportWorker (
IN EFI_HANDLE AgentHandle,
- IN UNICODE_INTERFACE *UnicodeInterface
+ IN EFI_GUID *ProtocolGuid,
+ IN CONST CHAR16 *VariableName,
+ IN CONST CHAR8 *DefaultLanguage
)
{
+ EFI_STATUS ReturnStatus;
EFI_STATUS Status;
- CHAR8 Buffer[100];
- UINTN BufferSize;
+ UINTN NumHandles;
UINTN Index;
- CHAR8 *LangCode;
- UINTN NoHandles;
EFI_HANDLE *Handles;
EFI_UNICODE_COLLATION_PROTOCOL *Uci;
-
- LangCode = Buffer;
- BufferSize = sizeof (Buffer);
- Status = gRT->GetVariable (
- UnicodeInterface->VariableName,
- &gEfiGlobalVariableGuid,
- NULL,
- &BufferSize,
- Buffer
- );
- if (EFI_ERROR (Status)) {
- LangCode = UnicodeInterface->DefaultLangCode;
- }
+ BOOLEAN Iso639Language;
+ CHAR8 *Language;
+ CHAR8 *BestLanguage;
Status = gBS->LocateHandleBuffer (
ByProtocol,
- UnicodeInterface->UnicodeProtocolGuid,
+ ProtocolGuid,
NULL,
- &NoHandles,
+ &NumHandles,
&Handles
);
if (EFI_ERROR (Status)) {
return Status;
}
- for (Index = 0; Index < NoHandles; Index++) {
+ Iso639Language = (BOOLEAN) (ProtocolGuid == &gEfiUnicodeCollationProtocolGuid);
+ GetEfiGlobalVariable2 (VariableName, (VOID**) &Language, NULL);
+
+ ReturnStatus = EFI_UNSUPPORTED;
+ for (Index = 0; Index < NumHandles; Index++) {
//
// Open Unicode Collation Protocol
//
Status = gBS->OpenProtocol (
Handles[Index],
- UnicodeInterface->UnicodeProtocolGuid,
+ ProtocolGuid,
(VOID **) &Uci,
AgentHandle,
NULL,
@@ -148,20 +81,41 @@ InitializeUnicodeCollationSupportWithConfig (
continue;
}
- if (UnicodeInterface->SearchLangCode (Uci->SupportedLanguages, LangCode)) {
+ //
+ // Find the best matching matching language from the supported languages
+ // of Unicode Collation (2) protocol.
+ //
+ BestLanguage = GetBestLanguage (
+ Uci->SupportedLanguages,
+ Iso639Language,
+ (Language == NULL) ? "" : Language,
+ DefaultLanguage,
+ NULL
+ );
+ if (BestLanguage != NULL) {
+ FreePool (BestLanguage);
mUnicodeCollationInterface = Uci;
+ ReturnStatus = EFI_SUCCESS;
break;
}
}
+ if (Language != NULL) {
+ FreePool (Language);
+ }
+
FreePool (Handles);
- return (mUnicodeCollationInterface != NULL)? EFI_SUCCESS : EFI_NOT_FOUND;
+ return ReturnStatus;
}
/**
Initialize Unicode Collation support.
+ It tries to locate Unicode Collation 2 protocol and matches it with current
+ platform language code. If for any reason the first attempt fails, it then tries to
+ use Unicode Collation Protocol.
+
@param AgentHandle The handle used to open Unicode Collation (2) protocol.
@retval EFI_SUCCESS The Unicode Collation (2) protocol has been successfully located.
@@ -177,17 +131,33 @@ InitializeUnicodeCollationSupport (
EFI_STATUS Status;
Status = EFI_UNSUPPORTED;
- if (FeaturePcdGet (PcdUnicodeCollation2Support)) {
- Status = InitializeUnicodeCollationSupportWithConfig (AgentHandle, &mRfc3066Lang);
- }
- if (FeaturePcdGet (PcdUnicodeCollationSupport) && EFI_ERROR (Status)) {
- Status = InitializeUnicodeCollationSupportWithConfig (AgentHandle, &mIso639Lang);
+ //
+ // First try to use RFC 4646 Unicode Collation 2 Protocol.
+ //
+ Status = InitializeUnicodeCollationSupportWorker (
+ AgentHandle,
+ &gEfiUnicodeCollation2ProtocolGuid,
+ L"PlatformLang",
+ (CONST CHAR8 *) PcdGetPtr (PcdUefiVariableDefaultPlatformLang)
+ );
+ //
+ // If the attempt to use Unicode Collation 2 Protocol fails, then we fall back
+ // on the ISO 639-2 Unicode Collation Protocol.
+ //
+ if (EFI_ERROR (Status)) {
+ Status = InitializeUnicodeCollationSupportWorker (
+ AgentHandle,
+ &gEfiUnicodeCollationProtocolGuid,
+ L"Lang",
+ (CONST CHAR8 *) PcdGetPtr (PcdUefiVariableDefaultLang)
+ );
}
return Status;
}
+
/**
Performs a case-insensitive comparison of two Null-terminated Unicode strings.