UEFI HII: Merge UEFI HII support changes from branch.

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@4599 6f19259b-4bc3-4df7-8a09-765794883524

MdeModulePkg/Universal/BdsDxe/String.c

@@ -0,0 +1,104 @@
+/*++
+
+Copyright (c) 2004 - 2008, 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.
+
+Module Name:
+
+  String.c
+
+Abstract:
+
+  String support
+
+--*/
+
+#include "Bds.h"
+#include "Language.h"
+#include "FrontPage.h"
+
+EFI_HII_HANDLE gStringPackHandle;
+
+EFI_GUID mBdsStringPackGuid = {
+  0x7bac95d3, 0xddf, 0x42f3, 0x9e, 0x24, 0x7c, 0x64, 0x49, 0x40, 0x37, 0x9a
+};
+
+EFI_STATUS
+InitializeStringSupport (
+  VOID
+  )
+/*++
+
+Routine Description:
+  Initialize HII global accessor for string support
+
+Arguments:
+  None
+
+Returns:
+  EFI_SUCCESS - String support initialize success.
+
+--*/
+{
+  EFI_STATUS                   Status;
+  EFI_HANDLE                   DriverHandle;
+  EFI_HII_PACKAGE_LIST_HEADER  *PackageList;
+
+  Status = gBS->LocateProtocol (&gEfiHiiDatabaseProtocolGuid, NULL, (VOID **) &gHiiDatabase);
+  if (EFI_ERROR (Status)) {
+    return Status;
+  }
+
+  //
+  // Create driver handle used by HII database
+  //
+  Status = HiiLibCreateHiiDriverHandle (&DriverHandle);
+  if (EFI_ERROR (Status)) {
+    return Status;
+  }
+
+  PackageList = PreparePackageList (1, &mBdsStringPackGuid, &BdsStrings);
+  ASSERT (PackageList != NULL);
+
+  Status = gHiiDatabase->NewPackageList (
+                           gHiiDatabase,
+                           PackageList,
+                           DriverHandle,
+                           &gStringPackHandle
+                           );
+
+  FreePool (PackageList);
+  return Status;
+}
+
+CHAR16 *
+GetStringById (
+  IN  EFI_STRING_ID   Id
+  )
+/*++
+
+Routine Description:
+  Get string by string id from HII Interface
+
+Arguments:
+  Id       - String ID.
+
+Returns:
+  CHAR16 * - String from ID.
+  NULL     - If error occurs.
+
+--*/
+{
+  CHAR16 *String;
+
+  String = NULL;
+  GetStringFromHandle (gStringPackHandle, Id, &String);
+
+  return String;
+}