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122 lines
3.4 KiB
122 lines
3.4 KiB
4 years ago
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/** @file
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Main file for Echo shell level 3 function.
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(C) Copyright 2015 Hewlett-Packard Development Company, L.P.<BR>
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Copyright (c) 2009 - 2018, Intel Corporation. All rights reserved. <BR>
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This program and the accompanying materials
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are licensed and made available under the terms and conditions of the BSD License
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which accompanies this distribution. The full text of the license may be found at
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http://opensource.org/licenses/bsd-license.php
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THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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**/
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#include "UefiShellLevel3CommandsLib.h"
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#include <Library/ShellLib.h>
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STATIC CONST SHELL_PARAM_ITEM ParamList[] = {
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{L"-on", TypeFlag},
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{L"-off", TypeFlag},
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{NULL, TypeMax}
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};
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/**
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Function for 'echo' command.
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@param[in] ImageHandle Handle to the Image (NULL if Internal).
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@param[in] SystemTable Pointer to the System Table (NULL if Internal).
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**/
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SHELL_STATUS
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EFIAPI
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ShellCommandRunEcho (
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IN EFI_HANDLE ImageHandle,
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IN EFI_SYSTEM_TABLE *SystemTable
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)
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{
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EFI_STATUS Status;
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LIST_ENTRY *Package;
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SHELL_STATUS ShellStatus;
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UINTN ParamCount;
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CHAR16 *ProblemParam;
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UINTN Size;
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CHAR16 *PrintString;
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Size = 0;
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ProblemParam = NULL;
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PrintString = NULL;
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ShellStatus = SHELL_SUCCESS;
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//
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// initialize the shell lib (we must be in non-auto-init...)
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//
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Status = ShellInitialize();
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ASSERT_EFI_ERROR(Status);
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//
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// parse the command line
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//
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Status = ShellCommandLineParseEx (ParamList, &Package, &ProblemParam, TRUE, TRUE);
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if (EFI_ERROR(Status)) {
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if (Status == EFI_VOLUME_CORRUPTED && ProblemParam != NULL) {
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ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN (STR_GEN_PROBLEM), gShellLevel3HiiHandle, L"echo", ProblemParam);
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FreePool(ProblemParam);
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ShellStatus = SHELL_INVALID_PARAMETER;
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} else {
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ASSERT(FALSE);
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}
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} else {
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//
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// check for "-?"
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//
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if (ShellCommandLineGetFlag(Package, L"-?")) {
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ASSERT(FALSE);
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}
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if (ShellCommandLineGetFlag(Package, L"-on")) {
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//
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// Turn it on
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//
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ShellCommandSetEchoState(TRUE);
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} else if (ShellCommandLineGetFlag(Package, L"-off")) {
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//
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// turn it off
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//
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ShellCommandSetEchoState(FALSE);
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} else if (ShellCommandLineGetRawValue(Package, 1) == NULL) {
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//
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// output its current state
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//
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if (ShellCommandGetEchoState()) {
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ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN (STR_ECHO_ON), gShellLevel3HiiHandle);
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} else {
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ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN (STR_ECHO_OFF), gShellLevel3HiiHandle);
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}
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} else {
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//
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// print the line
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//
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for ( ParamCount = 1
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; ShellCommandLineGetRawValue(Package, ParamCount) != NULL
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; ParamCount++
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) {
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StrnCatGrow(&PrintString, &Size, ShellCommandLineGetRawValue(Package, ParamCount), 0);
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if (ShellCommandLineGetRawValue(Package, ParamCount+1) != NULL) {
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StrnCatGrow(&PrintString, &Size, L" ", 0);
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}
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}
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ShellPrintEx(-1, -1, L"%s\r\n", PrintString);
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SHELL_FREE_NON_NULL(PrintString);
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}
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//
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// free the command line package
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//
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ShellCommandLineFreeVarList (Package);
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}
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return (ShellStatus);
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}
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