ShellPkg/Library/UefiShellLevel3CommandsLib/Pause.c

   1 /** @file
   2   Main file for Pause shell level 3 function.
   3
   4   Copyright (c) 2009 - 2010, Intel Corporation. All rights reserved. <BR>
   5   This program and the accompanying materials
   6   are licensed and made available under the terms and conditions of the BSD License
   7   which accompanies this distribution.  The full text of the license may be found at
   8   http://opensource.org/licenses/bsd-license.php
   9
  10   THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
  11   WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
  12
  13 **/
  14
  15 #include "UefiShellLevel3CommandsLib.h"
  16
  17 STATIC CONST SHELL_PARAM_ITEM ParamList[] = {
  18   {L"-q", TypeFlag},
  19   {NULL, TypeMax}
  20   };
  21
  22 /**
  23   Function for 'pause' command.
  24
  25   @param[in] ImageHandle  Handle to the Image (NULL if Internal).
  26   @param[in] SystemTable  Pointer to the System Table (NULL if Internal).
  27 **/
  28 SHELL_STATUS
  29 EFIAPI
  30 ShellCommandRunPause (
  31   IN EFI_HANDLE        ImageHandle,
  32   IN EFI_SYSTEM_TABLE  *SystemTable
  33   )
  34 {
  35   EFI_STATUS          Status;
  36   LIST_ENTRY          *Package;
  37   CHAR16              *ProblemParam;
  38   SHELL_STATUS        ShellStatus;
  39   SHELL_PROMPT_RESPONSE            *Resp;
  40
  41   ProblemParam        = NULL;
  42   ShellStatus         = SHELL_SUCCESS;
  43
  44   //
  45   // initialize the shell lib (we must be in non-auto-init...)
  46   //
  47   Status = ShellInitialize();
  48   ASSERT_EFI_ERROR(Status);
  49
  50   Status = CommandInit();
  51   ASSERT_EFI_ERROR(Status);
  52
  53   if (!gEfiShellProtocol->BatchIsActive()) {
  54     ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN (STR_GEN_SCRIPT_ONLY), gShellLevel3HiiHandle);
  55     return (SHELL_UNSUPPORTED);
  56   }
  57
  58   //
  59   // parse the command line
  60   //
  61   Status = ShellCommandLineParse (ParamList, &Package, &ProblemParam, TRUE);
  62   if (EFI_ERROR(Status)) {
  63     if (Status == EFI_VOLUME_CORRUPTED && ProblemParam != NULL) {
  64       ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN (STR_GEN_PROBLEM), gShellLevel3HiiHandle, ProblemParam);
  65       FreePool(ProblemParam);
  66       ShellStatus = SHELL_INVALID_PARAMETER;
  67     } else {
  68       ASSERT(FALSE);
  69     }
  70   } else {
  71     //
  72     // check for "-?"
  73     //
  74     if (ShellCommandLineGetFlag(Package, L"-?")) {
  75       ASSERT(FALSE);
  76     } else if (ShellCommandLineGetRawValue(Package, 1) != NULL) {
  77       ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN (STR_GEN_TOO_MANY), gShellLevel3HiiHandle);
  78       ShellStatus = SHELL_INVALID_PARAMETER;
  79     } else {
  80       if (!ShellCommandLineGetFlag(Package, L"-q")) {
  81         Status = ShellPromptForResponseHii(ShellPromptResponseTypeQuitContinue, STRING_TOKEN (STR_PAUSE_PROMPT), gShellLevel3HiiHandle, (VOID**)&Resp);
  82       } else {
  83         Status = ShellPromptForResponse(ShellPromptResponseTypeQuitContinue, NULL, (VOID**)&Resp);
  84       }
  85       ASSERT_EFI_ERROR(Status);
  86
  87       if (Resp == NULL || *Resp == ShellPromptResponseQuit) {
  88         ShellCommandRegisterExit(TRUE);
  89         ShellStatus = SHELL_ABORTED;
  90       }
  91
  92       if (Resp != NULL) {
  93         FreePool(Resp);
  94       }
  95     }
  96
  97     //
  98     // free the command line package
  99     //
 100     ShellCommandLineFreeVarList (Package);
 101   }
 102
 103
 104   return (ShellStatus);
 105 }
 106