/** @file | |
Main file for Shift shell level 1 function. | |
(C) Copyright 2015 Hewlett-Packard Development Company, L.P.<BR> | |
Copyright (c) 2009 - 2018, Intel Corporation. All rights reserved.<BR> | |
SPDX-License-Identifier: BSD-2-Clause-Patent | |
**/ | |
#include "UefiShellLevel1CommandsLib.h" | |
/** | |
Function for 'shift' command. | |
@param[in] ImageHandle Handle to the Image (NULL if Internal). | |
@param[in] SystemTable Pointer to the System Table (NULL if Internal). | |
**/ | |
SHELL_STATUS | |
EFIAPI | |
ShellCommandRunShift ( | |
IN EFI_HANDLE ImageHandle, | |
IN EFI_SYSTEM_TABLE *SystemTable | |
) | |
{ | |
EFI_STATUS Status; | |
SCRIPT_FILE *CurrentScriptFile; | |
UINTN LoopVar; | |
Status = CommandInit (); | |
ASSERT_EFI_ERROR (Status); | |
if (!gEfiShellProtocol->BatchIsActive ()) { | |
ShellPrintHiiEx (-1, -1, NULL, STRING_TOKEN (STR_NO_SCRIPT), gShellLevel1HiiHandle, L"shift"); | |
return (SHELL_UNSUPPORTED); | |
} | |
CurrentScriptFile = ShellCommandGetCurrentScriptFile (); | |
ASSERT (CurrentScriptFile != NULL); | |
if (CurrentScriptFile->Argc < 2) { | |
ShellPrintHiiEx (-1, -1, NULL, STRING_TOKEN (STR_GEN_TOO_FEW), gShellLevel1HiiHandle, L"shift"); | |
return (SHELL_UNSUPPORTED); | |
} | |
for (LoopVar = 0; LoopVar < CurrentScriptFile->Argc; LoopVar++) { | |
if (LoopVar == 0) { | |
SHELL_FREE_NON_NULL (CurrentScriptFile->Argv[LoopVar]); | |
} | |
if (LoopVar < CurrentScriptFile->Argc -1) { | |
CurrentScriptFile->Argv[LoopVar] = CurrentScriptFile->Argv[LoopVar+1]; | |
} else { | |
CurrentScriptFile->Argv[LoopVar] = NULL; | |
} | |
} | |
CurrentScriptFile->Argc--; | |
return (SHELL_SUCCESS); | |
} |