ShellPkg/Library/UefiShellLevel3CommandsLib/Echo.c

   1 /** @file
   2   Main file for Echo 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 #include <Library/ShellLib.h>
  18
  19 STATIC CONST SHELL_PARAM_ITEM ParamList[] = {
  20   {L"-on", TypeFlag},
  21   {L"-off", TypeFlag},
  22   {NULL, TypeMax}
  23   };
  24
  25 /**
  26   Function for 'echo' command.
  27
  28   @param[in] ImageHandle  Handle to the Image (NULL if Internal).
  29   @param[in] SystemTable  Pointer to the System Table (NULL if Internal).
  30 **/
  31 SHELL_STATUS
  32 EFIAPI
  33 ShellCommandRunEcho (
  34   IN EFI_HANDLE        ImageHandle,
  35   IN EFI_SYSTEM_TABLE  *SystemTable
  36   )
  37 {
  38   EFI_STATUS          Status;
  39   LIST_ENTRY          *Package;
  40 //  CHAR16              *ProblemParam;
  41   SHELL_STATUS        ShellStatus;
  42   UINTN               ParamCount;
  43
  44 //  ProblemParam        = NULL;
  45   ShellStatus         = SHELL_SUCCESS;
  46
  47   //
  48   // initialize the shell lib (we must be in non-auto-init...)
  49   //
  50   Status = ShellInitialize();
  51   ASSERT_EFI_ERROR(Status);
  52
  53   //
  54   // parse the command line
  55   //
  56   Status = ShellCommandLineParseEx (ParamList, &Package, NULL, TRUE, TRUE);
  57 //  if (EFI_ERROR(Status)) {
  58 //    if (Status == EFI_VOLUME_CORRUPTED && ProblemParam != NULL) {
  59 //      ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN (STR_GEN_PROBLEM), gShellLevel3HiiHandle, ProblemParam);
  60 //      FreePool(ProblemParam);
  61 //      ShellStatus = SHELL_INVALID_PARAMETER;
  62 //    } else {
  63 //      ASSERT(FALSE);
  64 //    }
  65 //  } else {
  66     //
  67     // check for "-?"
  68     //
  69     if (ShellCommandLineGetFlag(Package, L"-?")) {
  70       ASSERT(FALSE);
  71     }
  72     if (ShellCommandLineGetFlag(Package, L"-on")) {
  73       //
  74       // Turn it on
  75       //
  76       ShellCommandSetEchoState(TRUE);
  77     } else if (ShellCommandLineGetFlag(Package, L"-off")) {
  78       //
  79       // turn it off
  80       //
  81       ShellCommandSetEchoState(FALSE);
  82     } else if (ShellCommandLineGetRawValue(Package, 1) == NULL) {
  83       //
  84       // output its current state
  85       //
  86       if (ShellCommandGetEchoState()) {
  87         ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN (STR_ECHO_ON), gShellLevel3HiiHandle);
  88       } else {
  89         ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN (STR_ECHO_OFF), gShellLevel3HiiHandle);
  90       }
  91     } else {
  92       //
  93       // print the line
  94       //
  95       for ( ParamCount = 1
  96           ; ShellCommandLineGetRawValue(Package, ParamCount) != NULL
  97           ; ParamCount++
  98          ) {
  99         if (ShellCommandLineGetRawValue(Package, ParamCount+1) != NULL) {
 100           ShellPrintEx(-1, -1, L"%s ", ShellCommandLineGetRawValue(Package, ParamCount));
 101         } else {
 102           ShellPrintEx(-1, -1, L"%s", ShellCommandLineGetRawValue(Package, ParamCount));
 103         }
 104       }
 105       ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN (STR_GEN_CRLF), gShellLevel3HiiHandle);
 106     }
 107
 108     //
 109     // free the command line package
 110     //
 111     ShellCommandLineFreeVarList (Package);
 112 //  }
 113
 114   return (ShellStatus);
 115 }
 116