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Sync FrameworkUefiLib with the MdePkg UefiLib

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git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@10583 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
mdkinney
2010-06-14 23:32:07 +00:00
parent 57b3102955
commit 4ea439fb1d
5 changed files with 477 additions and 28 deletions
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249
IntelFrameworkPkg/Library/FrameworkUefiLib/UefiLib.c
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@@ -5,7 +5,7 @@
EFI Driver Model related protocols, manage Unicode string tables for UEFI Drivers,
and print messages on the console output and standard error devices.
Copyright (c) 2006 - 2007, Intel Corporation. All rights reserved.<BR>
Copyright (c) 2006 - 2008, Intel Corporation. All rights reserved.<BR>
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
@@ -92,15 +92,17 @@ EfiGetSystemConfigurationTable (
instances specified by ProtocolGuid.
This function causes the notification function to be executed for every protocol of type
ProtocolGuid instance that exists in the system when this function is invoked.
In addition, every time a protocol of type ProtocolGuid instance is installed or reinstalled,
the notification function is also executed. This function returns the notification event
that was created.
ProtocolGuid instance that exists in the system when this function is invoked. If there are
no instances of ProtocolGuid in the handle database at the time this function is invoked,
then the notification function is still executed one time. In addition, every time a protocol
of type ProtocolGuid instance is installed or reinstalled, the notification function is also
executed. This function returns the notification event that was created.
If ProtocolGuid is NULL, then ASSERT().
If NotifyTpl is not a legal TPL value, then ASSERT().
If NotifyFunction is NULL, then ASSERT().
If Registration is NULL, then ASSERT().
@param ProtocolGuid Supplies GUID of the protocol upon whose installation the event is fired.
@param NotifyTpl Supplies the task priority level of the event notifications.
@param NotifyFunction Supplies the function to notify when the event is signaled.
@@ -143,7 +145,7 @@ EfiCreateProtocolNotifyEvent(
ASSERT_EFI_ERROR (Status);
//
// Register for protocol notifactions on this event
// Register for protocol notifications on this event
//
Status = gBS->RegisterProtocolNotify (
@@ -454,9 +456,9 @@ EfiReleaseLock (
function.
@retval EFI_SUCCESS ControllerHandle is managed by the driver
specifed by DriverBindingHandle.
specified by DriverBindingHandle.
@retval EFI_UNSUPPORTED ControllerHandle is not managed by the driver
specifed by DriverBindingHandle.
specified by DriverBindingHandle.
**/
EFI_STATUS
@@ -579,7 +581,7 @@ EfiTestChildHandle (
@retval EFI_SUCCESS The Unicode string that matches the language
specified by Language was found
in the table of Unicoide strings UnicodeStringTable,
in the table of Unicode strings UnicodeStringTable,
and it was returned in UnicodeString.
@retval EFI_INVALID_PARAMETER Language is NULL.
@retval EFI_INVALID_PARAMETER UnicodeString is NULL.
@@ -659,7 +661,7 @@ LookupUnicodeString (
RFC 4646 language code for the Unicode string to look up and
return. If Iso639Language is TRUE, then this ASCII string is
not assumed to be Null-terminated, and only the first three
chacters are used. If Iso639Language is FALSE, then this ASCII
characters are used. If Iso639Language is FALSE, then this ASCII
string must be Null-terminated.
@param SupportedLanguages A pointer to a Null-terminated ASCII string that contains a
set of ISO 639-2 or RFC 4646 language codes that the Unicode
@@ -689,7 +691,6 @@ LookupUnicodeString (
**/
EFI_STATUS
EFIAPI
LookupUnicodeString2 (
IN CONST CHAR8 *Language,
@@ -1188,3 +1189,229 @@ FreeUnicodeStringTable (
return EFI_SUCCESS;
}
/**
Returns a pointer to an allocated buffer that contains the contents of a
variable retrieved through the UEFI Runtime Service GetVariable(). The
returned buffer is allocated using AllocatePool(). The caller is responsible
for freeing this buffer with FreePool().
If Name is NULL, then ASSERT().
If Guid is NULL, then ASSERT().
@param[in] Name Pointer to a Null-terminated Unicode string.
@param[in] Guid Pointer to an EFI_GUID structure
@retval NULL The variable could not be retrieved.
@retval NULL There are not enough resources available for the variable contents.
@retval Other A pointer to allocated buffer containing the variable contents.
**/
VOID *
EFIAPI
GetVariable (
IN CONST CHAR16 *Name,
IN CONST EFI_GUID *Guid
)
{
EFI_STATUS Status;
UINTN Size;
VOID *Value;
ASSERT (Name != NULL);
ASSERT (Guid != NULL);
//
// Try to get the variable size.
//
Value = NULL;
Size = 0;
Status = gRT->GetVariable ((CHAR16 *) Name, (EFI_GUID *) Guid, NULL, &Size, Value);
if (Status != EFI_BUFFER_TOO_SMALL) {
return NULL;
}
//
// Allocate buffer to get the variable.
//
Value = AllocatePool (Size);
if (Value == NULL) {
return NULL;
}
//
// Get the variable data.
//
Status = gRT->GetVariable ((CHAR16 *) Name, (EFI_GUID *) Guid, NULL, &Size, Value);
if (EFI_ERROR (Status)) {
FreePool(Value);
return NULL;
}
return Value;
}
/**
Returns a pointer to an allocated buffer that contains the contents of a
variable retrieved through the UEFI Runtime Service GetVariable(). This
function always uses the EFI_GLOBAL_VARIABLE GUID to retrieve variables.
The returned buffer is allocated using AllocatePool(). The caller is
responsible for freeing this buffer with FreePool().
If Name is NULL, then ASSERT().
@param[in] Name Pointer to a Null-terminated Unicode string.
@retval NULL The variable could not be retrieved.
@retval NULL There are not enough resources available for the variable contents.
@retval Other A pointer to allocated buffer containing the variable contents.
**/
VOID *
EFIAPI
GetEfiGlobalVariable (
IN CONST CHAR16 *Name
)
{
return GetVariable (Name, &gEfiGlobalVariableGuid);
}
/**
Returns a pointer to an allocated buffer that contains the best matching language
from a set of supported languages.
This function supports both ISO 639-2 and RFC 4646 language codes, but language
code types may not be mixed in a single call to this function. The language
code returned is allocated using AllocatePool(). The caller is responsible for
freeing the allocated buffer using FreePool(). This function supports a variable
argument list that allows the caller to pass in a prioritized list of language
codes to test against all the language codes in SupportedLanguages.
If SupportedLanguages is NULL, then ASSERT().
@param[in] SupportedLanguages A pointer to a Null-terminated ASCII string that
contains a set of language codes in the format
specified by Iso639Language.
@param[in] Iso639Language If TRUE, then all language codes are assumed to be
in ISO 639-2 format. If FALSE, then all language
codes are assumed to be in RFC 4646 language format
@param[in] ... A variable argument list that contains pointers to
Null-terminated ASCII strings that contain one or more
language codes in the format specified by Iso639Language.
The first language code from each of these language
code lists is used to determine if it is an exact or
close match to any of the language codes in
SupportedLanguages. Close matches only apply to RFC 4646
language codes, and the matching algorithm from RFC 4647
is used to determine if a close match is present. If
an exact or close match is found, then the matching
language code from SupportedLanguages is returned. If
no matches are found, then the next variable argument
parameter is evaluated. The variable argument list
is terminated by a NULL.
@retval NULL The best matching language could not be found in SupportedLanguages.
@retval NULL There are not enough resources available to return the best matching
language.
@retval Other A pointer to a Null-terminated ASCII string that is the best matching
language in SupportedLanguages.
**/
CHAR8 *
EFIAPI
GetBestLanguage (
IN CONST CHAR8 *SupportedLanguages,
IN BOOLEAN Iso639Language,
...
)
{
VA_LIST Args;
CHAR8 *Language;
UINTN CompareLength;
UINTN LanguageLength;
CONST CHAR8 *Supported;
CHAR8 *BestLanguage;
ASSERT (SupportedLanguages != NULL);
VA_START (Args, Iso639Language);
while ((Language = VA_ARG (Args, CHAR8 *)) != NULL) {
//
// Default to ISO 639-2 mode
//
CompareLength = 3;
LanguageLength = MIN (3, AsciiStrLen (Language));
//
// If in RFC 4646 mode, then determine the length of the first RFC 4646 language code in Language
//
if (!Iso639Language) {
for (LanguageLength = 0; Language[LanguageLength] != 0 && Language[LanguageLength] != ';'; LanguageLength++);
}
//
// Trim back the length of Language used until it is empty
//
while (LanguageLength > 0) {
//
// Loop through all language codes in SupportedLanguages
//
for (Supported = SupportedLanguages; *Supported != '\0'; Supported += CompareLength) {
//
// In RFC 4646 mode, then Loop through all language codes in SupportedLanguages
//
if (!Iso639Language) {
//
// Skip ';' characters in Supported
//
for (; *Supported != '\0' && *Supported == ';'; Supported++);
//
// Determine the length of the next language code in Supported
//
for (CompareLength = 0; Supported[CompareLength] != 0 && Supported[CompareLength] != ';'; CompareLength++);
//
// If Language is longer than the Supported, then skip to the next language
//
if (LanguageLength > CompareLength) {
continue;
}
}
//
// See if the first LanguageLength characters in Supported match Language
//
if (AsciiStrnCmp (Supported, Language, LanguageLength) == 0) {
VA_END (Args);
//
// Allocate, copy, and return the best matching language code from SupportedLanguages
//
BestLanguage = AllocateZeroPool (CompareLength + 1);
if (BestLanguage == NULL) {
return NULL;
}
return CopyMem (BestLanguage, Supported, CompareLength);
}
}
if (Iso639Language) {
//
// If ISO 639 mode, then each language can only be tested once
//
LanguageLength = 0;
} else {
//
// If RFC 4646 mode, then trim Language from the right to the next '-' character
//
for (LanguageLength--; LanguageLength > 0 && Language[LanguageLength] != '-'; LanguageLength--);
}
}
}
VA_END (Args);
//
// No matches were found
//
return NULL;
}