Tianocore/edk2.git/ShellPkg/Library/UefiShellCommandLib/UefiShellCommandLib.h, branch master

ShellPkg: Replace include guards with #pragma once

2026-02-23T21:01:28+00:00

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

ShellPkg: Apply uncrustify changes

2021-12-07T17:24:28+00:00

REF: https://bugzilla.tianocore.org/show_bug.cgi?id=3737 Apply uncrustify changes to .c/.h files in the ShellPkg package Cc: Andrew Fish Cc: Leif Lindholm Cc: Michael D Kinney Signed-off-by: Michael Kubacki Reviewed-by: Ray Ni

ShellPkg/ShellCommandLib: add ShellSortFileList()

2021-01-19T18:23:28+00:00

Introduce the ShellSortFileList() function, for sorting an EFI_SHELL_FILE_INFO list, by FileName or by FullName. Duplicates can be kept in the same list, or separated out to a new list. In either case, the relative order between duplicates does not change (the sorting is stable). For the sorting, use OrderedCollectionLib rather than SortLib: - The PerformQuickSort() function from the latter has quadratic worst-case time complexity, plus it is implemented recursively (see "MdeModulePkg/Library/UefiSortLib/UefiSortLib.c"). It can also not return an error on memory allocation failure. - In comparison, the Red-Black Tree instance of OrderedCollectionLib sorts in O(n*log(n)) worst-case time, contains no recursion with the default PcdValidateOrderedCollection=FALSE setting, and the OrderedCollectionLib class APIs return errors appropriately. The OrderedCollectionLib APIs do not permit duplicates natively, but by using lists as collection entries, stable sorting of duplicates can be achieved. Cc: Philippe Mathieu-Daudé Cc: Ray Ni Cc: Zhichao Gao Ref: https://bugzilla.tianocore.org/show_bug.cgi?id=3151 Signed-off-by: Laszlo Ersek Reviewed-by: Zhichao Gao Message-Id: <20210113085453.10168-7-lersek@redhat.com> Reviewed-by: Philippe Mathieu-Daudé

ShellPkg: stop using EFI_HANDLE in place of EFI_HII_HANDLE

2019-10-09T07:40:10+00:00

The UefiShell*CommandsLib instances have constructor functions that do something like: gHiiHandle = HiiAddPackages (...); ... ShellCommandRegisterCommandName (..., gHiiHandle, ...); and destructor functions that implement the following pattern: HiiRemovePackages (gHiiHandle); The -- semantic, not functional -- problem is that "gHiiHandle" is declared with type EFI_HANDLE, and not EFI_HII_HANDLE, in all of these library instances, even though HiiAddPackages() correctly returns EFI_HII_HANDLE, and HiiRemovePackages() takes EFI_HII_HANDLE. Once we fix the type of "gHiiHandle", it causes sort of a butterfly effect, because it is passed around widely. Track down and update all of those locations. The DynamicCommand lib instances use a similar pattern, so they are affected too. NOTE: in practice, this patch is a no-op, as both EFI_HII_HANDLE and EFI_HANDLE are typedefs to (VOID*). However, we shouldn't use EFI_HANDLE where semantically EFI_HII_HANDLE is passed around. Cc: Jaben Carsey Cc: Ray Ni Cc: Zhichao Gao Signed-off-by: Laszlo Ersek Reviewed-by: Philippe Mathieu-Daude Reviewed-by: Zhichao Gao

ShellPkg: Replace BSD License with BSD+Patent License

2019-04-09T17:58:25+00:00

https://bugzilla.tianocore.org/show_bug.cgi?id=1373 Replace BSD 2-Clause License with BSD+Patent License. This change is based on the following emails: https://lists.01.org/pipermail/edk2-devel/2019-February/036260.html https://lists.01.org/pipermail/edk2-devel/2018-October/030385.html RFCs with detailed process for the license change: V3: https://lists.01.org/pipermail/edk2-devel/2019-March/038116.html V2: https://lists.01.org/pipermail/edk2-devel/2019-March/037669.html V1: https://lists.01.org/pipermail/edk2-devel/2019-March/037500.html Contributed-under: TianoCore Contribution Agreement 1.1 Signed-off-by: Michael D Kinney Reviewed-by: Ray Ni Reviewed-by: Jaben Carsey

ShellPkg/CommandLib: Locate proper UnicodeCollation instance

2018-01-29T01:41:44+00:00

Original code locates the first UnicodeCollation instance in DXE Core protocol database. It's not correct considering multiple UnicodeCollation instances exist in system. The patch changes logic to find the one that matches the current system language. Contributed-under: TianoCore Contribution Agreement 1.1 Signed-off-by: Ruiyu Ni Reviewed-by: Jaben Carsey

ShellPkg: Update sources to include MdePkg protocol definitions

2016-10-19T02:26:16+00:00

Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Ruiyu Ni Reviewed-by: Jaben Carsey

ShellPkg: Correct files with CRLF line ending

2016-07-29T01:18:12+00:00

Cc: Ruiyu Ni Cc: Jaben Carsey Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Liming Gao Reviewed-by: Jaben Carsey

ShellPkg: Enahance 'dh' command to add more protocols decoding support

2016-04-25T16:08:06+00:00

Adding EdidDiscovered, EdidActive protocol decode support a in 'dh' command. Extending GraphicsOutput protocol decoding to list all supported GOP resolutions. Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Tapan Shah Reviewed-by: Samer El-Haj-Mahmoud Reviewed-by: Jaben Carsey

This searches for handles that produce the dynamic command protocol after searching the commands compiled into the shell.

2014-08-05T20:09:25+00:00

Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Jaben Carsey Reviewed-by: Eugene Cohen Reviewed-by: Erik Bjorge git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@15754 6f19259b-4bc3-4df7-8a09-765794883524