VirtualBox

source: vbox/trunk/src/VBox/Devices/EFI/Firmware/ShellPkg/Library/UefiShellLevel3CommandsLib/Echo.c@ 58466

Last change on this file since 58466 was 58466, checked in by vboxsync, 9 years ago

EFI/Firmware: Merged in the svn:eol-style, svn:mime-type and trailing whitespace cleanup that was done after the initial UDK2014.SP1 import: svn merge /vendor/edk2/UDK2014.SP1 /vendor/edk2/current .

  • Property svn:eol-style set to native
File size: 3.3 KB
Line 
1/** @file
2 Main file for Echo shell level 3 function.
3
4 Copyright (c) 2009 - 2012, 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
19STATIC 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**/
31SHELL_STATUS
32EFIAPI
33ShellCommandRunEcho (
34 IN EFI_HANDLE ImageHandle,
35 IN EFI_SYSTEM_TABLE *SystemTable
36 )
37{
38 EFI_STATUS Status;
39 LIST_ENTRY *Package;
40 SHELL_STATUS ShellStatus;
41 UINTN ParamCount;
42 CHAR16 *ProblemParam;
43 UINTN Size;
44 CHAR16 *PrintString;
45
46 Size = 0;
47 ProblemParam = NULL;
48 PrintString = NULL;
49 ShellStatus = SHELL_SUCCESS;
50
51 //
52 // initialize the shell lib (we must be in non-auto-init...)
53 //
54 Status = ShellInitialize();
55 ASSERT_EFI_ERROR(Status);
56
57 //
58 // parse the command line
59 //
60 Status = ShellCommandLineParseEx (ParamList, &Package, &ProblemParam, TRUE, TRUE);
61 if (EFI_ERROR(Status)) {
62 if (Status == EFI_VOLUME_CORRUPTED && ProblemParam != NULL) {
63 ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN (STR_GEN_PROBLEM), gShellLevel3HiiHandle, ProblemParam);
64 FreePool(ProblemParam);
65 ShellStatus = SHELL_INVALID_PARAMETER;
66 } else {
67 ASSERT(FALSE);
68 }
69 } else {
70 //
71 // check for "-?"
72 //
73 if (ShellCommandLineGetFlag(Package, L"-?")) {
74 ASSERT(FALSE);
75 }
76 if (ShellCommandLineGetFlag(Package, L"-on")) {
77 //
78 // Turn it on
79 //
80 ShellCommandSetEchoState(TRUE);
81 } else if (ShellCommandLineGetFlag(Package, L"-off")) {
82 //
83 // turn it off
84 //
85 ShellCommandSetEchoState(FALSE);
86 } else if (ShellCommandLineGetRawValue(Package, 1) == NULL) {
87 //
88 // output its current state
89 //
90 if (ShellCommandGetEchoState()) {
91 ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN (STR_ECHO_ON), gShellLevel3HiiHandle);
92 } else {
93 ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN (STR_ECHO_OFF), gShellLevel3HiiHandle);
94 }
95 } else {
96 //
97 // print the line
98 //
99 for ( ParamCount = 1
100 ; ShellCommandLineGetRawValue(Package, ParamCount) != NULL
101 ; ParamCount++
102 ) {
103 StrnCatGrow(&PrintString, &Size, ShellCommandLineGetRawValue(Package, ParamCount), 0);
104 if (ShellCommandLineGetRawValue(Package, ParamCount+1) != NULL) {
105 StrnCatGrow(&PrintString, &Size, L" ", 0);
106 }
107 }
108 ShellPrintEx(-1, -1, L"%s\r\n", PrintString);
109 SHELL_FREE_NON_NULL(PrintString);
110 }
111
112 //
113 // free the command line package
114 //
115 ShellCommandLineFreeVarList (Package);
116 }
117
118 return (ShellStatus);
119}
120
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