mirror of https://github.com/acidanthera/audk.git
137 lines
3.1 KiB
C
137 lines
3.1 KiB
C
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/*++
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Copyright (c) 2006, Intel Corporation
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All rights reserved. This program and the accompanying materials
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are licensed and made available under the terms and conditions of the BSD License
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which accompanies this distribution. The full text of the license may be found at
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http://opensource.org/licenses/bsd-license.php
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THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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Module Name:
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string.c
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Abstract:
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String support
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Revision History
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--*/
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#include "Bds.h"
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#include "String.h"
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#include "Language.h"
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extern UINT8 EdkGenericPlatformBdsLibStrings[];
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EFI_GUID gBdsStringPackGuid = { 0x7bac95d3, 0xddf, 0x42f3, {0x9e, 0x24, 0x7c, 0x64, 0x49, 0x40, 0x37, 0x9a} };
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EFI_HII_HANDLE gStringPackHandle;
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EFI_HII_PROTOCOL *Hii;
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EFI_STATUS
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InitializeStringSupport (
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VOID
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)
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/*++
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Routine Description:
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Initialize HII global accessor for string support
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Arguments:
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None
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Returns:
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String from ID.
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--*/
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{
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EFI_STATUS Status;
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EFI_HII_PACKAGES *PackageList;
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//
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// There should only ever be one HII protocol
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//
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Status = gBS->LocateProtocol (
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&gEfiHiiProtocolGuid,
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NULL,
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(VOID**)&Hii
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);
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if (!EFI_ERROR (Status)) {
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PackageList = PreparePackages (1, &gBdsStringPackGuid, EdkGenericPlatformBdsLibStrings);
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Status = Hii->NewPack (Hii, PackageList, &gStringPackHandle);
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gBS->FreePool (PackageList);
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}
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return Status;
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}
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CHAR16 *
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GetStringById (
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IN STRING_REF Id
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)
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/*++
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Routine Description:
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Get string by string id from HII Interface
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Arguments:
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Id - String ID.
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Returns:
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CHAR16 * - String from ID.
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NULL - If error occurs.
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--*/
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{
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CHAR16 *String;
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UINTN StringLength;
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EFI_STATUS Status;
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//
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// Set default string size assumption at no more than 256 bytes
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//
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StringLength = 0x100;
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String = AllocateZeroPool (StringLength);
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if (String == NULL) {
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//
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// If this happens, we are oh-so-dead, but return a NULL in any case.
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//
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return NULL;
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}
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//
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// Get the current string for the current Language
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//
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Status = Hii->GetString (Hii, gStringPackHandle, Id, FALSE, NULL, &StringLength, String);
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if (EFI_ERROR (Status)) {
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if (Status == EFI_BUFFER_TOO_SMALL) {
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//
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// Free the old pool
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//
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gBS->FreePool (String);
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//
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// Allocate new pool with correct value
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//
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String = AllocatePool (StringLength);
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ASSERT (String != NULL);
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Status = Hii->GetString (Hii, gStringPackHandle, Id, FALSE, NULL, &StringLength, String);
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if (!EFI_ERROR (Status)) {
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return String;
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}
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}
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return NULL;
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}
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return String;
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}
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