ShellPkg/Library/UefiShellLevel3CommandsLib/Pause.c

   1 /** @file
   2   Main file for Pause shell level 3 function.
   3
   4   (C) Copyright 2015 Hewlett-Packard Development Company, L.P.<BR>
   5   Copyright (c) 2009 - 2018, Intel Corporation. All rights reserved. <BR>
   6   SPDX-License-Identifier: BSD-2-Clause-Patent
   7
   8 **/
   9
  10 #include "UefiShellLevel3CommandsLib.h"
  11
  12 STATIC CONST SHELL_PARAM_ITEM ParamList[] = {
  13   {L"-q", TypeFlag},
  14   {NULL, TypeMax}
  15   };
  16
  17 /**
  18   Function for 'pause' command.
  19
  20   @param[in] ImageHandle  Handle to the Image (NULL if Internal).
  21   @param[in] SystemTable  Pointer to the System Table (NULL if Internal).
  22 **/
  23 SHELL_STATUS
  24 EFIAPI
  25 ShellCommandRunPause (
  26   IN EFI_HANDLE        ImageHandle,
  27   IN EFI_SYSTEM_TABLE  *SystemTable
  28   )
  29 {
  30   EFI_STATUS          Status;
  31   LIST_ENTRY          *Package;
  32   CHAR16              *ProblemParam;
  33   SHELL_STATUS        ShellStatus;
  34   SHELL_PROMPT_RESPONSE            *Resp;
  35
  36   ProblemParam        = NULL;
  37   ShellStatus         = SHELL_SUCCESS;
  38   Resp                = NULL;
  39
  40   //
  41   // initialize the shell lib (we must be in non-auto-init...)
  42   //
  43   Status = ShellInitialize();
  44   ASSERT_EFI_ERROR(Status);
  45
  46   Status = CommandInit();
  47   ASSERT_EFI_ERROR(Status);
  48
  49   if (!gEfiShellProtocol->BatchIsActive()) {
  50     ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN (STR_NO_SCRIPT), gShellLevel3HiiHandle, L"pause");
  51     return (SHELL_UNSUPPORTED);
  52   }
  53
  54   //
  55   // parse the command line
  56   //
  57   Status = ShellCommandLineParse (ParamList, &Package, &ProblemParam, TRUE);
  58   if (EFI_ERROR(Status)) {
  59     if (Status == EFI_VOLUME_CORRUPTED && ProblemParam != NULL) {
  60       ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN (STR_GEN_PROBLEM), gShellLevel3HiiHandle, L"pause", ProblemParam);
  61       FreePool(ProblemParam);
  62       ShellStatus = SHELL_INVALID_PARAMETER;
  63     } else {
  64       ASSERT(FALSE);
  65     }
  66   } else {
  67     //
  68     // check for "-?"
  69     //
  70     if (ShellCommandLineGetFlag(Package, L"-?")) {
  71       ASSERT(FALSE);
  72     } else if (ShellCommandLineGetRawValue(Package, 1) != NULL) {
  73       ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN (STR_GEN_TOO_MANY), gShellLevel3HiiHandle, L"pause");
  74       ShellStatus = SHELL_INVALID_PARAMETER;
  75     } else {
  76       if (!ShellCommandLineGetFlag(Package, L"-q")) {
  77         Status = ShellPromptForResponseHii(ShellPromptResponseTypeQuitContinue, STRING_TOKEN (STR_PAUSE_PROMPT), gShellLevel3HiiHandle, (VOID**)&Resp);
  78       } else {
  79         Status = ShellPromptForResponse(ShellPromptResponseTypeQuitContinue, NULL, (VOID**)&Resp);
  80       }
  81
  82       if (EFI_ERROR(Status) || Resp == NULL || *Resp == ShellPromptResponseQuit) {
  83         ShellCommandRegisterExit(TRUE, 0);
  84         ShellStatus = SHELL_ABORTED;
  85       }
  86
  87       if (Resp != NULL) {
  88         FreePool(Resp);
  89       }
  90     }
  91
  92     //
  93     // free the command line package
  94     //
  95     ShellCommandLineFreeVarList (Package);
  96   }
  97
  98
  99   return (ShellStatus);
 100 }
 101