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350 lines
12 KiB
C
350 lines
12 KiB
C
/** @file
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HII Library implementation that uses DXE protocols and services.
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Copyright (c) 2006 - 2018, Intel Corporation. All rights reserved.<BR>
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SPDX-License-Identifier: BSD-2-Clause-Patent
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**/
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#include "InternalHiiLib.h"
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/**
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This function create a new string in String Package or updates an existing
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string in a String Package. If StringId is 0, then a new string is added to
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a String Package. If StringId is not zero, then a string in String Package is
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updated. If SupportedLanguages is NULL, then the string is added or updated
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for all the languages that the String Package supports. If SupportedLanguages
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is not NULL, then the string is added or updated for the set of languages
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specified by SupportedLanguages.
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If HiiHandle is NULL, then ASSERT().
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If String is NULL, then ASSERT().
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@param[in] HiiHandle A handle that was previously registered in the
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HII Database.
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@param[in] StringId If zero, then a new string is created in the
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String Package associated with HiiHandle. If
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non-zero, then the string specified by StringId
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is updated in the String Package associated
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with HiiHandle.
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@param[in] String A pointer to the Null-terminated Unicode string
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to add or update in the String Package associated
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with HiiHandle.
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@param[in] SupportedLanguages A pointer to a Null-terminated ASCII string of
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language codes. If this parameter is NULL, then
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String is added or updated in the String Package
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associated with HiiHandle for all the languages
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that the String Package supports. If this
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parameter is not NULL, then then String is added
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or updated in the String Package associated with
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HiiHandle for the set oflanguages specified by
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SupportedLanguages. The format of
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SupportedLanguages must follow the language
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format assumed the HII Database.
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@retval 0 The string could not be added or updated in the String Package.
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@retval Other The EFI_STRING_ID of the newly added or updated string.
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**/
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EFI_STRING_ID
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EFIAPI
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HiiSetString (
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IN EFI_HII_HANDLE HiiHandle,
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IN EFI_STRING_ID StringId, OPTIONAL
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IN CONST EFI_STRING String,
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IN CONST CHAR8 *SupportedLanguages OPTIONAL
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)
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{
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EFI_STATUS Status;
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CHAR8 *AllocatedLanguages;
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CHAR8 *Supported;
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CHAR8 *Language;
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ASSERT (HiiHandle != NULL);
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ASSERT (String != NULL);
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if (SupportedLanguages == NULL) {
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//
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// Retrieve the languages that the package specified by HiiHandle supports
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//
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AllocatedLanguages = HiiGetSupportedLanguages (HiiHandle);
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} else {
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//
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// Allocate a copy of the SupportLanguages string that passed in
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//
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AllocatedLanguages = AllocateCopyPool (AsciiStrSize (SupportedLanguages), SupportedLanguages);
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}
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//
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// If there are not enough resources for the supported languages string, then return a StringId of 0
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//
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if (AllocatedLanguages == NULL) {
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return (EFI_STRING_ID)(0);
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}
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Status = EFI_INVALID_PARAMETER;
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//
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// Loop through each language that the string supports
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//
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for (Supported = AllocatedLanguages; *Supported != '\0'; ) {
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//
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// Cache a pointer to the beginning of the current language in the list of languages
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//
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Language = Supported;
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//
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// Search for the next language separator and replace it with a Null-terminator
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//
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for (; *Supported != 0 && *Supported != ';'; Supported++);
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if (*Supported != 0) {
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*(Supported++) = '\0';
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}
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if ((SupportedLanguages == NULL) && AsciiStrnCmp (Language, UEFI_CONFIG_LANG, AsciiStrLen (UEFI_CONFIG_LANG)) == 0) {
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//
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// Skip string package used for keyword protocol.
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//
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continue;
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}
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//
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// If StringId is 0, then call NewString(). Otherwise, call SetString()
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//
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if (StringId == (EFI_STRING_ID)(0)) {
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Status = gHiiString->NewString (gHiiString, HiiHandle, &StringId, Language, NULL, String, NULL);
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} else {
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Status = gHiiString->SetString (gHiiString, HiiHandle, StringId, Language, String, NULL);
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}
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//
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// If there was an error, then break out of the loop and return a StringId of 0
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//
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if (EFI_ERROR (Status)) {
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break;
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}
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}
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//
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// Free the buffer of supported languages
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//
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FreePool (AllocatedLanguages);
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if (EFI_ERROR (Status)) {
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return (EFI_STRING_ID)(0);
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} else {
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return StringId;
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}
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}
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/**
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Retrieves a string from a string package names by GUID in a specific language.
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If the language is not specified, then a string from a string package in the
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current platform language is retrieved. If the string can not be retrieved
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using the specified language or the current platform language, then the string
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is retrieved from the string package in the first language the string package
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supports. The returned string is allocated using AllocatePool(). The caller
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is responsible for freeing the allocated buffer using FreePool().
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If PackageListGuid is NULL, then ASSERT().
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If StringId is 0, then ASSERT.
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@param[in] PackageListGuid The GUID of a package list that was previously
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registered in the HII Database.
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@param[in] StringId The identifier of the string to retrieved from the
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string package associated with PackageListGuid.
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@param[in] Language The language of the string to retrieve. If this
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parameter is NULL, then the current platform
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language is used. The format of Language must
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follow the language format assumed the HII Database.
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@retval NULL The package list specified by PackageListGuid is not present in the
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HII Database.
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@retval NULL The string specified by StringId is not present in the string package.
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@retval Other The string was returned.
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**/
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EFI_STRING
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EFIAPI
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HiiGetPackageString (
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IN CONST EFI_GUID *PackageListGuid,
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IN EFI_STRING_ID StringId,
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IN CONST CHAR8 *Language OPTIONAL
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)
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{
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EFI_HANDLE *HiiHandleBuffer;
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EFI_HANDLE HiiHandle;
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ASSERT (PackageListGuid != NULL);
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HiiHandleBuffer = HiiGetHiiHandles (PackageListGuid);
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if (HiiHandleBuffer == NULL) {
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return NULL;
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}
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HiiHandle = HiiHandleBuffer[0];
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FreePool (HiiHandleBuffer);
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return HiiGetString (HiiHandle, StringId, Language);
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}
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/**
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Retrieves a string from a string package in a specific language. If the language
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is not specified, then a string from a string package in the current platform
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language is retrieved. If the string can not be retrieved using the specified
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language or the current platform language, then the string is retrieved from
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the string package in the first language the string package supports. The
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returned string is allocated using AllocatePool(). The caller is responsible
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for freeing the allocated buffer using FreePool().
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If HiiHandle is NULL, then ASSERT().
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If StringId is 0, then ASSET.
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@param[in] HiiHandle A handle that was previously registered in the HII Database.
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@param[in] StringId The identifier of the string to retrieved from the string
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package associated with HiiHandle.
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@param[in] Language The language of the string to retrieve. If this parameter
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is NULL, then the current platform language is used. The
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format of Language must follow the language format assumed
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the HII Database.
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@retval NULL The string specified by StringId is not present in the string package.
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@retval Other The string was returned.
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**/
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EFI_STRING
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EFIAPI
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HiiGetString (
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IN EFI_HII_HANDLE HiiHandle,
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IN EFI_STRING_ID StringId,
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IN CONST CHAR8 *Language OPTIONAL
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)
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{
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EFI_STATUS Status;
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UINTN StringSize;
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CHAR16 TempString;
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EFI_STRING String;
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CHAR8 *SupportedLanguages;
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CHAR8 *PlatformLanguage;
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CHAR8 *BestLanguage;
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ASSERT (HiiHandle != NULL);
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ASSERT (StringId != 0);
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//
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// Initialize all allocated buffers to NULL
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//
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SupportedLanguages = NULL;
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PlatformLanguage = NULL;
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BestLanguage = NULL;
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String = NULL;
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//
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// Get the languages that the package specified by HiiHandle supports
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//
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SupportedLanguages = HiiGetSupportedLanguages (HiiHandle);
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if (SupportedLanguages == NULL) {
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goto Error;
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}
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//
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// Get the current platform language setting
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//
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GetEfiGlobalVariable2 (L"PlatformLang", (VOID**)&PlatformLanguage, NULL);
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//
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// If Languag is NULL, then set it to an empty string, so it will be
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// skipped by GetBestLanguage()
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//
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if (Language == NULL) {
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Language = "";
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}
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//
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// Get the best matching language from SupportedLanguages
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//
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BestLanguage = GetBestLanguage (
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SupportedLanguages,
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FALSE, // RFC 4646 mode
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Language, // Highest priority
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PlatformLanguage != NULL ? PlatformLanguage : "", // Next highest priority
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SupportedLanguages, // Lowest priority
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NULL
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);
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if (BestLanguage == NULL) {
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goto Error;
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}
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//
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// Retrieve the size of the string in the string package for the BestLanguage
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//
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StringSize = 0;
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Status = gHiiString->GetString (
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gHiiString,
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BestLanguage,
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HiiHandle,
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StringId,
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&TempString,
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&StringSize,
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NULL
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);
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//
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// If GetString() returns EFI_SUCCESS for a zero size,
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// then there are no supported languages registered for HiiHandle. If GetString()
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// returns an error other than EFI_BUFFER_TOO_SMALL, then HiiHandle is not present
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// in the HII Database
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//
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if (Status != EFI_BUFFER_TOO_SMALL) {
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goto Error;
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}
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//
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// Allocate a buffer for the return string
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//
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String = AllocateZeroPool (StringSize);
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if (String == NULL) {
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goto Error;
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}
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//
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// Retrieve the string from the string package
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//
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Status = gHiiString->GetString (
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gHiiString,
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BestLanguage,
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HiiHandle,
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StringId,
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String,
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&StringSize,
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NULL
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);
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if (EFI_ERROR (Status)) {
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//
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// Free the buffer and return NULL if the supported languages can not be retrieved.
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//
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FreePool (String);
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String = NULL;
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}
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Error:
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//
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// Free allocated buffers
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//
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if (SupportedLanguages != NULL) {
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FreePool (SupportedLanguages);
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}
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if (PlatformLanguage != NULL) {
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FreePool (PlatformLanguage);
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}
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if (BestLanguage != NULL) {
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FreePool (BestLanguage);
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}
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//
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// Return the Null-terminated Unicode string
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//
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return String;
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}
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