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/** @file
Main file for NULL named library for level 1 shell command functions.
Copyright (c) 2009 - 2010, Intel Corporation. All rights reserved.<BR>
This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
which accompanies this distribution. The full text of the license may be found at
http://opensource.org/licenses/bsd-license.php
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
**/
#include "UefiShellLevel1CommandsLib.h"
STATIC CONST CHAR16 mFileName[] = L"ShellCommands";
EFI_HANDLE gShellLevel1HiiHandle = NULL;
CONST EFI_GUID gShellLevel1HiiGuid = \
{ \
0xdec5daa4, 0x6781, 0x4820, { 0x9c, 0x63, 0xa7, 0xb0, 0xe4, 0xf1, 0xdb, 0x31 }
};
CONST CHAR16*
EFIAPI
ShellCommandGetManFileNameLevel1 (
VOID
)
{
return (mFileName);
}
/**
Constructor for the Shell Level 1 Commands library.
Install the handlers for level 1 UEFI Shell 2.0 commands.
@param ImageHandle the image handle of the process
@param SystemTable the EFI System Table pointer
@retval EFI_SUCCESS the shell command handlers were installed sucessfully
@retval EFI_UNSUPPORTED the shell level required was not found.
**/
EFI_STATUS
EFIAPI
ShellLevel1CommandsLibConstructor (
IN EFI_HANDLE ImageHandle,
IN EFI_SYSTEM_TABLE *SystemTable
)
{
//
// if shell level is less than 2 do nothing
//
if (PcdGet8(PcdShellSupportLevel) < 1) {
return (EFI_UNSUPPORTED);
}
gShellLevel1HiiHandle = HiiAddPackages (&gShellLevel1HiiGuid, gImageHandle, UefiShellLevel1CommandsLibStrings, NULL);
if (gShellLevel1HiiHandle == NULL) {
return (EFI_DEVICE_ERROR);
}
//
// install our shell command handlers that are always installed
//
ShellCommandRegisterCommandName(L"for", ShellCommandRunFor , ShellCommandGetManFileNameLevel1, 1, L"", FALSE, gShellLevel1HiiHandle, (EFI_STRING_ID)(PcdGet8(PcdShellSupportLevel) < 3 ? 0 : STRING_TOKEN(STR_GET_HELP_FOR) ));
ShellCommandRegisterCommandName(L"goto", ShellCommandRunGoto , ShellCommandGetManFileNameLevel1, 1, L"", FALSE, gShellLevel1HiiHandle, (EFI_STRING_ID)(PcdGet8(PcdShellSupportLevel) < 3 ? 0 : STRING_TOKEN(STR_GET_HELP_GOTO) ));
ShellCommandRegisterCommandName(L"if", ShellCommandRunIf , ShellCommandGetManFileNameLevel1, 1, L"", FALSE, gShellLevel1HiiHandle, (EFI_STRING_ID)(PcdGet8(PcdShellSupportLevel) < 3 ? 0 : STRING_TOKEN(STR_GET_HELP_IF) ));
ShellCommandRegisterCommandName(L"shift", ShellCommandRunShift , ShellCommandGetManFileNameLevel1, 1, L"", FALSE, gShellLevel1HiiHandle, (EFI_STRING_ID)(PcdGet8(PcdShellSupportLevel) < 3 ? 0 : STRING_TOKEN(STR_GET_HELP_SHIFT) ));
ShellCommandRegisterCommandName(L"exit", ShellCommandRunExit , ShellCommandGetManFileNameLevel1, 1, L"", TRUE , gShellLevel1HiiHandle, (EFI_STRING_ID)(PcdGet8(PcdShellSupportLevel) < 3 ? 0 : STRING_TOKEN(STR_GET_HELP_EXIT) ));
ShellCommandRegisterCommandName(L"else", ShellCommandRunElse , ShellCommandGetManFileNameLevel1, 1, L"", FALSE, gShellLevel1HiiHandle, (EFI_STRING_ID)(PcdGet8(PcdShellSupportLevel) < 3 ? 0 : STRING_TOKEN(STR_GET_HELP_ELSE) ));
ShellCommandRegisterCommandName(L"endif", ShellCommandRunEndIf , ShellCommandGetManFileNameLevel1, 1, L"", FALSE, gShellLevel1HiiHandle, (EFI_STRING_ID)(PcdGet8(PcdShellSupportLevel) < 3 ? 0 : STRING_TOKEN(STR_GET_HELP_ENDIF) ));
ShellCommandRegisterCommandName(L"endfor", ShellCommandRunEndFor , ShellCommandGetManFileNameLevel1, 1, L"", FALSE, gShellLevel1HiiHandle, (EFI_STRING_ID)(PcdGet8(PcdShellSupportLevel) < 3 ? 0 : STRING_TOKEN(STR_GET_HELP_ENDFOR)));
return (EFI_SUCCESS);
}
/**
Destructor for the library. free any resources.
**/
EFI_STATUS
EFIAPI
ShellLevel1CommandsLibDestructor (
IN EFI_HANDLE ImageHandle,
IN EFI_SYSTEM_TABLE *SystemTable
)
{
if (gShellLevel1HiiHandle != NULL) {
HiiRemovePackages(gShellLevel1HiiHandle);
}
return (EFI_SUCCESS);
}
BOOLEAN
EFIAPI
TestNodeForMove (
IN CONST LIST_MANIP_FUNC Function,
IN CONST CHAR16 *DecrementerTag,
IN CONST CHAR16 *IncrementerTag,
IN CONST CHAR16 *Label OPTIONAL,
IN SCRIPT_FILE *ScriptFile,
IN CONST BOOLEAN MovePast,
IN CONST BOOLEAN FindOnly,
IN CONST SCRIPT_COMMAND_LIST *CommandNode,
IN UINTN *TargetCount
)
{
BOOLEAN Found;
CHAR16 *CommandName;
CHAR16 *CommandNameWalker;
CHAR16 *TempLocation;
Found = FALSE;
//
// get just the first part of the command line...
//
CommandName = NULL;
CommandName = StrnCatGrow(&CommandName, NULL, CommandNode->Cl, 0);
CommandNameWalker = CommandName;
while(CommandNameWalker[0] == L' ') {
CommandNameWalker++;
}
TempLocation = StrStr(CommandNameWalker, L" ");
if (TempLocation != NULL) {
*TempLocation = CHAR_NULL;
}
//
// did we find a nested item ?
//
if (gUnicodeCollation->StriColl(
gUnicodeCollation,
(CHAR16*)CommandNameWalker,
(CHAR16*)IncrementerTag) == 0) {
(*TargetCount)++;
} else if (gUnicodeCollation->StriColl(
gUnicodeCollation,
(CHAR16*)CommandNameWalker,
(CHAR16*)DecrementerTag) == 0) {
if (*TargetCount > 0) {
(*TargetCount)--;
}
}
//
// did we find the matching one...
//
if (Label == NULL) {
if (*TargetCount == 0) {
Found = TRUE;
if (!FindOnly) {
if (MovePast) {
ScriptFile->CurrentCommand = (SCRIPT_COMMAND_LIST *)(*Function)(&ScriptFile->CommandList, &CommandNode->Link);
} else {
ScriptFile->CurrentCommand = (SCRIPT_COMMAND_LIST *)CommandNode;
}
}
}
} else {
if (gUnicodeCollation->StriColl(
gUnicodeCollation,
(CHAR16*)CommandNameWalker,
(CHAR16*)Label) == 0
&& (*TargetCount) == 0) {
Found = TRUE;
if (!FindOnly) {
//
// we found the target label without loops
//
if (MovePast) {
ScriptFile->CurrentCommand = (SCRIPT_COMMAND_LIST *)(*Function)(&ScriptFile->CommandList, &CommandNode->Link);
} else {
ScriptFile->CurrentCommand = (SCRIPT_COMMAND_LIST *)CommandNode;
}
}
}
}
//
// Free the memory for this loop...
//
FreePool(CommandName);
return (Found);
}
BOOLEAN
EFIAPI
MoveToTag (
IN CONST LIST_MANIP_FUNC Function,
IN CONST CHAR16 *DecrementerTag,
IN CONST CHAR16 *IncrementerTag,
IN CONST CHAR16 *Label OPTIONAL,
IN SCRIPT_FILE *ScriptFile,
IN CONST BOOLEAN MovePast,
IN CONST BOOLEAN FindOnly,
IN CONST BOOLEAN WrapAroundScript
)
{
SCRIPT_COMMAND_LIST *CommandNode;
BOOLEAN Found;
UINTN TargetCount;
if (Label == NULL) {
TargetCount = 1;
} else {
TargetCount = 0;
}
if (ScriptFile == NULL) {
return FALSE;
}
for (CommandNode = (SCRIPT_COMMAND_LIST *)(*Function)(&ScriptFile->CommandList, &ScriptFile->CurrentCommand->Link), Found = FALSE
; !IsNull(&ScriptFile->CommandList, &CommandNode->Link)&& !Found
; CommandNode = (SCRIPT_COMMAND_LIST *)(*Function)(&ScriptFile->CommandList, &CommandNode->Link)
){
Found = TestNodeForMove(
Function,
DecrementerTag,
IncrementerTag,
Label,
ScriptFile,
MovePast,
FindOnly,
CommandNode,
&TargetCount);
}
if (WrapAroundScript && !Found) {
for (CommandNode = (SCRIPT_COMMAND_LIST *)GetFirstNode(&ScriptFile->CommandList), Found = FALSE
; CommandNode != ScriptFile->CurrentCommand && !Found
; CommandNode = (SCRIPT_COMMAND_LIST *)(*Function)(&ScriptFile->CommandList, &CommandNode->Link)
){
Found = TestNodeForMove(
Function,
DecrementerTag,
IncrementerTag,
Label,
ScriptFile,
MovePast,
FindOnly,
CommandNode,
&TargetCount);
}
}
return (Found);
}
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