/** @file
  Main file for NULL named library for level 1 shell command functions.

  Copyright (c) 2009 - 2011, 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.

**/

#ifndef _UEFI_SHELL_LEVEL1_COMMANDS_LIB_H_
#define _UEFI_SHELL_LEVEL1_COMMANDS_LIB_H_

#include <Uefi.h>
#include <ShellBase.h>

#include <Protocol/EfiShell.h>
#include <Protocol/EfiShellParameters.h>
#include <Protocol/DevicePath.h>
#include <Protocol/LoadedImage.h>
#include <Protocol/UnicodeCollation.h>
#include <Protocol/DevicePathToText.h>

#include <Library/BaseLib.h>
#include <Library/BaseMemoryLib.h>
#include <Library/DebugLib.h>
#include <Library/MemoryAllocationLib.h>
#include <Library/PcdLib.h>
#include <Library/ShellCommandLib.h>
#include <Library/ShellLib.h>
#include <Library/SortLib.h>
#include <Library/UefiLib.h>
#include <Library/UefiRuntimeServicesTableLib.h>
#include <Library/UefiBootServicesTableLib.h>
#include <Library/HiiLib.h>
#include <Library/FileHandleLib.h>

extern        EFI_HANDLE                        gShellLevel1HiiHandle;
extern CONST  EFI_GUID                          gShellLevel1HiiGuid;

/**
  Function for 'stall' command.

  @param[in] ImageHandle  Handle to the Image (NULL if Internal).
  @param[in] SystemTable  Pointer to the System Table (NULL if Internal).
**/
SHELL_STATUS
EFIAPI
ShellCommandRunStall (
  IN EFI_HANDLE        ImageHandle,
  IN EFI_SYSTEM_TABLE  *SystemTable
  );

/**
  Function for 'exit' command.

  @param[in] ImageHandle  Handle to the Image (NULL if Internal).
  @param[in] SystemTable  Pointer to the System Table (NULL if Internal).
**/
SHELL_STATUS
EFIAPI
ShellCommandRunExit (
  IN EFI_HANDLE        ImageHandle,
  IN EFI_SYSTEM_TABLE  *SystemTable
  );

/**
  Function for 'endif' command.

  @param[in] ImageHandle  Handle to the Image (NULL if Internal).
  @param[in] SystemTable  Pointer to the System Table (NULL if Internal).
**/
SHELL_STATUS
EFIAPI
ShellCommandRunEndIf (
  IN EFI_HANDLE        ImageHandle,
  IN EFI_SYSTEM_TABLE  *SystemTable
  );

/**
  Function for 'for' command.

  @param[in] ImageHandle  Handle to the Image (NULL if Internal).
  @param[in] SystemTable  Pointer to the System Table (NULL if Internal).
**/
SHELL_STATUS
EFIAPI
ShellCommandRunFor (
  IN EFI_HANDLE        ImageHandle,
  IN EFI_SYSTEM_TABLE  *SystemTable
  );

/**
  Function for 'endfor' command.

  @param[in] ImageHandle  Handle to the Image (NULL if Internal).
  @param[in] SystemTable  Pointer to the System Table (NULL if Internal).
**/
SHELL_STATUS
EFIAPI
ShellCommandRunEndFor (
  IN EFI_HANDLE        ImageHandle,
  IN EFI_SYSTEM_TABLE  *SystemTable
  );

/**
  Function for 'if' command.

  @param[in] ImageHandle  Handle to the Image (NULL if Internal).
  @param[in] SystemTable  Pointer to the System Table (NULL if Internal).
**/
SHELL_STATUS
EFIAPI
ShellCommandRunIf (
  IN EFI_HANDLE        ImageHandle,
  IN EFI_SYSTEM_TABLE  *SystemTable
  );

/**
  Function for 'goto' command.

  @param[in] ImageHandle  Handle to the Image (NULL if Internal).
  @param[in] SystemTable  Pointer to the System Table (NULL if Internal).
**/
SHELL_STATUS
EFIAPI
ShellCommandRunGoto (
  IN EFI_HANDLE        ImageHandle,
  IN EFI_SYSTEM_TABLE  *SystemTable
  );

/**
  Function for 'shift' command.

  @param[in] ImageHandle  Handle to the Image (NULL if Internal).
  @param[in] SystemTable  Pointer to the System Table (NULL if Internal).
**/
SHELL_STATUS
EFIAPI
ShellCommandRunShift (
  IN EFI_HANDLE        ImageHandle,
  IN EFI_SYSTEM_TABLE  *SystemTable
  );


/**
  Function for 'else' command.

  @param[in] ImageHandle  Handle to the Image (NULL if Internal).
  @param[in] SystemTable  Pointer to the System Table (NULL if Internal).
**/
SHELL_STATUS
EFIAPI
ShellCommandRunElse (
  IN EFI_HANDLE        ImageHandle,
  IN EFI_SYSTEM_TABLE  *SystemTable
  );

///
/// Function prototype for BOTH GetNextNode and GetPreviousNode...
/// This is used to control the MoveToTag function direction...
///
typedef
LIST_ENTRY *
(EFIAPI *LIST_MANIP_FUNC)(
  IN CONST LIST_ENTRY *List,
  IN CONST LIST_ENTRY *Node
  );

/**
  Move the script pointer from 1 tag (line) to another.

  It functions so that count starts at 1 and it increases or decreases when it
  hits the specified tags.  when it hits zero the location has been found.

  DecrementerTag and IncrementerTag are used to get around for/endfor and 
  similar paired types where the entire middle should be ignored.

  If label is used it will be used instead of the count.

  @param[in] Function          The function to use to enumerate through the 
                               list.  Normally GetNextNode or GetPreviousNode.
  @param[in] DecrementerTag    The tag to decrement the count at.
  @param[in] IncrementerTag    The tag to increment the count at.
  @param[in] Label             A label to look for.
  @param[in, out] ScriptFile   The pointer to the current script file structure.
  @param[in] MovePast          TRUE makes function return 1 past the found 
                               location.
  @param[in] FindOnly          TRUE to not change the ScriptFile.
  @param[in] WrapAroundScript  TRUE to wrap end-to-begining or vise versa in 
                               searching.
**/
BOOLEAN
EFIAPI
MoveToTag (
  IN CONST LIST_MANIP_FUNC      Function,
  IN CONST CHAR16               *DecrementerTag,
  IN CONST CHAR16               *IncrementerTag,
  IN CONST CHAR16               *Label OPTIONAL,
  IN OUT SCRIPT_FILE            *ScriptFile,
  IN CONST BOOLEAN              MovePast,
  IN CONST BOOLEAN              FindOnly,
  IN CONST BOOLEAN              WrapAroundScript
  );

#endif