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   This program and the accompanying materials
   7   are licensed and made available under the terms and conditions of the BSD License
   8   which accompanies this distribution.  The full text of the license may be found at
   9   http://opensource.org/licenses/bsd-license.php
  10
  11   THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
  12   WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
  13
  14 **/
  15
  16 #include "UefiShellLevel3CommandsLib.h"
  17
  18 STATIC CONST SHELL_PARAM_ITEM ParamList[] = {
  19   {L"-q", TypeFlag},
  20   {NULL, TypeMax}
  21   };
  22
  23 /**
  24   Function for 'pause' command.
  25
  26   @param[in] ImageHandle  Handle to the Image (NULL if Internal).
  27   @param[in] SystemTable  Pointer to the System Table (NULL if Internal).
  28 **/
  29 SHELL_STATUS
  30 EFIAPI
  31 ShellCommandRunPause (
  32   IN EFI_HANDLE        ImageHandle,
  33   IN EFI_SYSTEM_TABLE  *SystemTable
  34   )
  35 {
  36   EFI_STATUS          Status;
  37   LIST_ENTRY          *Package;
  38   CHAR16              *ProblemParam;
  39   SHELL_STATUS        ShellStatus;
  40   SHELL_PROMPT_RESPONSE            *Resp;
  41
  42   ProblemParam        = NULL;
  43   ShellStatus         = SHELL_SUCCESS;
  44   Resp                = NULL;
  45
  46   //
  47   // initialize the shell lib (we must be in non-auto-init...)
  48   //
  49   Status = ShellInitialize();
  50   ASSERT_EFI_ERROR(Status);
  51
  52   Status = CommandInit();
  53   ASSERT_EFI_ERROR(Status);
  54
  55   if (!gEfiShellProtocol->BatchIsActive()) {
  56     ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN (STR_NO_SCRIPT), gShellLevel3HiiHandle, L"pause");
  57     return (SHELL_UNSUPPORTED);
  58   }
  59
  60   //
  61   // parse the command line
  62   //
  63   Status = ShellCommandLineParse (ParamList, &Package, &ProblemParam, TRUE);
  64   if (EFI_ERROR(Status)) {
  65     if (Status == EFI_VOLUME_CORRUPTED && ProblemParam != NULL) {
  66       ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN (STR_GEN_PROBLEM), gShellLevel3HiiHandle, L"pause", ProblemParam);
  67       FreePool(ProblemParam);
  68       ShellStatus = SHELL_INVALID_PARAMETER;
  69     } else {
  70       ASSERT(FALSE);
  71     }
  72   } else {
  73     //
  74     // check for "-?"
  75     //
  76     if (ShellCommandLineGetFlag(Package, L"-?")) {
  77       ASSERT(FALSE);
  78     } else if (ShellCommandLineGetRawValue(Package, 1) != NULL) {
  79       ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN (STR_GEN_TOO_MANY), gShellLevel3HiiHandle, L"pause");
  80       ShellStatus = SHELL_INVALID_PARAMETER;
  81     } else {
  82       if (!ShellCommandLineGetFlag(Package, L"-q")) {
  83         Status = ShellPromptForResponseHii(ShellPromptResponseTypeQuitContinue, STRING_TOKEN (STR_PAUSE_PROMPT), gShellLevel3HiiHandle, (VOID**)&Resp);
  84       } else {
  85         Status = ShellPromptForResponse(ShellPromptResponseTypeQuitContinue, NULL, (VOID**)&Resp);
  86       }
  87
  88       if (EFI_ERROR(Status) || Resp == NULL || *Resp == ShellPromptResponseQuit) {
  89         ShellCommandRegisterExit(TRUE, 0);
  90         ShellStatus = SHELL_ABORTED;
  91       }
  92
  93       if (Resp != NULL) {
  94         FreePool(Resp);
  95       }
  96     }
  97
  98     //
  99     // free the command line package
 100     //
 101     ShellCommandLineFreeVarList (Package);
 102   }
 103
 104
 105   return (ShellStatus);
 106 }
 107