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8472271dae
Replace traditional `#ifndef`/`#define`/`#endif` include guards with
`#pragma` once.
`#pragma once` is a widely supported preprocessor directive that
prevents header files from being included multiple times. It is
supported by all toolchains used to build edk2: GCC, Clang/LLVM, and
MSVC.
Compared to macro-based include guards, `#pragma once`:
- Eliminates the risk of macro name collisions or copy/paste errors
where two headers inadvertently use the same guard macro.
- Eliminate inconsistency in the way include guard macros are named
(e.g., some files use `__FILE_H__`, others use `FILE_H_`, etc.).
- Reduces boilerplate (three lines replaced by one).
- Avoids polluting the macro namespace with guard symbols.
- Can improve build times as the preprocessor can skip re-opening the
file entirely, rather than re-reading it to find the matching
`#endif` ("multiple-include optimization").
- Note that some compilers may already optimize traditional include
guards, by recognzining the idiomatic pattern.
This change is made acknowledging that overall portability of the
code will technically be reduced, as `#pragma once` is not part of the
C/C++ standards.
However, this is considered acceptable given:
1. edk2 already defines a subset of supported compilers in
BaseTools/Conf/tools_def.template, all of which have supported
`#pragma once` for over two decades.
2. There have been concerns raised to the project about inconsistent
include guard naming and potential macro collisions.
Approximate compiler support dates:
- MSVC: Supported since Visual C++ 4.2 (1996)
- GCC: Supported since 3.4 (2004)
(http://gnu.ist.utl.pt/software/gcc/gcc-3.4/changes.html)
- Clang (LLVM based): Since initial release in 2007
Signed-off-by: Michael Kubacki <michael.kubacki@microsoft.com>
199 lines
5.5 KiB
C
199 lines
5.5 KiB
C
/** @file
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Main file for NULL named library for level 1 shell command functions.
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Copyright (c) 2009 - 2018, Intel Corporation. All rights reserved.<BR>
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SPDX-License-Identifier: BSD-2-Clause-Patent
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**/
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#pragma once
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#include <Uefi.h>
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#include <Guid/ShellLibHiiGuid.h>
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#include <Protocol/Shell.h>
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#include <Protocol/ShellParameters.h>
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#include <Protocol/DevicePath.h>
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#include <Protocol/LoadedImage.h>
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#include <Protocol/UnicodeCollation.h>
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#include <Library/BaseLib.h>
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#include <Library/BaseMemoryLib.h>
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#include <Library/DebugLib.h>
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#include <Library/MemoryAllocationLib.h>
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#include <Library/PcdLib.h>
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#include <Library/ShellCommandLib.h>
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#include <Library/ShellLib.h>
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#include <Library/SortLib.h>
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#include <Library/UefiLib.h>
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#include <Library/UefiRuntimeServicesTableLib.h>
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#include <Library/UefiBootServicesTableLib.h>
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#include <Library/HiiLib.h>
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#include <Library/FileHandleLib.h>
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extern EFI_HII_HANDLE gShellLevel1HiiHandle;
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/**
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Function for 'stall' 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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ShellCommandRunStall (
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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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Function for 'exit' 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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ShellCommandRunExit (
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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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Function for 'endif' 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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ShellCommandRunEndIf (
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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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Function for 'for' 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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ShellCommandRunFor (
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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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Function for 'endfor' 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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ShellCommandRunEndFor (
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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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Function for 'if' 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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ShellCommandRunIf (
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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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Function for 'goto' 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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ShellCommandRunGoto (
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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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Function for 'shift' 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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ShellCommandRunShift (
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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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Function for 'else' 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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ShellCommandRunElse (
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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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/// Function prototype for BOTH GetNextNode and GetPreviousNode...
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/// This is used to control the MoveToTag function direction...
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///
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typedef
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LIST_ENTRY *
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(EFIAPI *LIST_MANIP_FUNC)(
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IN CONST LIST_ENTRY *List,
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IN CONST LIST_ENTRY *Node
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);
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/**
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Move the script pointer from 1 tag (line) to another.
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It functions so that count starts at 1 and it increases or decreases when it
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hits the specified tags. when it hits zero the location has been found.
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DecrementerTag and IncrementerTag are used to get around for/endfor and
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similar paired types where the entire middle should be ignored.
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If label is used it will be used instead of the count.
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@param[in] Function The function to use to enumerate through the
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list. Normally GetNextNode or GetPreviousNode.
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@param[in] DecrementerTag The tag to decrement the count at.
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@param[in] IncrementerTag The tag to increment the count at.
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@param[in] Label A label to look for.
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@param[in, out] ScriptFile The pointer to the current script file structure.
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@param[in] MovePast TRUE makes function return 1 past the found
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location.
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@param[in] FindOnly TRUE to not change the ScriptFile.
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@param[in] WrapAroundScript TRUE to wrap end-to-beginning or vise versa in
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searching.
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**/
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BOOLEAN
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MoveToTag (
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IN CONST LIST_MANIP_FUNC Function,
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IN CONST CHAR16 *DecrementerTag,
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IN CONST CHAR16 *IncrementerTag,
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IN CONST CHAR16 *Label OPTIONAL,
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IN OUT SCRIPT_FILE *ScriptFile,
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IN CONST BOOLEAN MovePast,
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IN CONST BOOLEAN FindOnly,
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IN CONST BOOLEAN WrapAroundScript
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);
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