17e59b3346
As the shell inverts foreground and background it needs to be sure that it properly masks off the reserved bits and this is important since the foreground and background are not the same numbers of bits. Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Jaben Carsey <Jaben.carsey@intel.com> Reviewed-by: Tapan Shah <tapandshah@hp.com> Reviewed-by: Erik Bjorge <erik.c.bjorge@intel.com> git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@15681 6f19259b-4bc3-4df7-8a09-765794883524
133 lines
3.9 KiB
C
133 lines
3.9 KiB
C
/** @file
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Main file for attrib shell level 2 function.
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Copyright (c) 2009 - 2014, 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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/**
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Function for 'cls' 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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ShellCommandRunCls (
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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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UINTN Background;
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UINTN ForeColor;
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CHAR16 *ProblemParam;
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SHELL_STATUS ShellStatus;
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CONST CHAR16 *Param1;
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//
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// Initialize variables
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//
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ShellStatus = SHELL_SUCCESS;
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ProblemParam = NULL;
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Background = 0;
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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 = ShellCommandLineParse (EmptyParamList, &Package, &ProblemParam, 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, 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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} else {
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//
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// If there are 0 value parameters, clear sceen
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//
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Param1 = ShellCommandLineGetRawValue(Package, 1);
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if (Param1 == NULL) {
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//
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// clear screen
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//
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gST->ConOut->ClearScreen (gST->ConOut);
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} else if (ShellCommandLineGetCount(Package) > 2) {
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ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN (STR_GEN_TOO_MANY), gShellLevel3HiiHandle);
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ShellStatus = SHELL_INVALID_PARAMETER;
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} else {
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if (ShellStrToUintn(Param1) > 7 || StrLen(Param1) > 1 || !ShellIsDecimalDigitCharacter(*Param1)) {
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ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN (STR_GEN_PROBLEM), gShellLevel3HiiHandle, Param1);
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ShellStatus = SHELL_INVALID_PARAMETER;
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} else {
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switch (ShellStrToUintn(Param1)) {
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case 0:
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Background = EFI_BACKGROUND_BLACK;
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break;
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case 1:
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Background = EFI_BACKGROUND_BLUE;
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break;
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case 2:
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Background = EFI_BACKGROUND_GREEN;
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break;
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case 3:
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Background = EFI_BACKGROUND_CYAN;
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break;
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case 4:
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Background = EFI_BACKGROUND_RED;
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break;
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case 5:
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Background = EFI_BACKGROUND_MAGENTA;
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break;
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case 6:
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Background = EFI_BACKGROUND_BROWN;
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break;
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case 7:
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Background = EFI_BACKGROUND_LIGHTGRAY;
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break;
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}
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ForeColor = (~ShellStrToUintn(Param1)) & 0xF;
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Status = gST->ConOut->SetAttribute (gST->ConOut, (ForeColor | Background) & 0x7F );
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ASSERT_EFI_ERROR(Status);
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Status = gST->ConOut->ClearScreen (gST->ConOut);
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ASSERT_EFI_ERROR(Status);
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}
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}
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}
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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 the status
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//
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return (ShellStatus);
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}
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