mirror of https://github.com/acidanthera/audk.git
59 lines
1.6 KiB
C
59 lines
1.6 KiB
C
/** @file
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Main file for Shift shell level 1 function.
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(C) Copyright 2015 Hewlett-Packard Development Company, L.P.<BR>
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Copyright (c) 2009 - 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 "UefiShellLevel1CommandsLib.h"
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/**
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Function for 'shift' command.
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@param[in] ImageHandle Handle to the Image (NULL if Internal).
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@param[in] SystemTable Pointer to the System Table (NULL if Internal).
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**/
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SHELL_STATUS
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EFIAPI
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ShellCommandRunShift (
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IN EFI_HANDLE ImageHandle,
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IN EFI_SYSTEM_TABLE *SystemTable
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)
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{
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EFI_STATUS Status;
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SCRIPT_FILE *CurrentScriptFile;
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UINTN LoopVar;
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Status = CommandInit();
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ASSERT_EFI_ERROR(Status);
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if (!gEfiShellProtocol->BatchIsActive()) {
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ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN (STR_NO_SCRIPT), gShellLevel1HiiHandle, L"shift");
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return (SHELL_UNSUPPORTED);
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}
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CurrentScriptFile = ShellCommandGetCurrentScriptFile();
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ASSERT(CurrentScriptFile != NULL);
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if (CurrentScriptFile->Argc < 2) {
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ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN (STR_GEN_TOO_FEW), gShellLevel1HiiHandle, L"shift");
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return (SHELL_UNSUPPORTED);
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}
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for (LoopVar = 0 ; LoopVar < CurrentScriptFile->Argc ; LoopVar++) {
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if (LoopVar == 0) {
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SHELL_FREE_NON_NULL(CurrentScriptFile->Argv[LoopVar]);
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}
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if (LoopVar < CurrentScriptFile->Argc -1) {
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CurrentScriptFile->Argv[LoopVar] = CurrentScriptFile->Argv[LoopVar+1];
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} else {
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CurrentScriptFile->Argv[LoopVar] = NULL;
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}
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}
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CurrentScriptFile->Argc--;
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return (SHELL_SUCCESS);
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}
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