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2026-02-24ShellPkg: Replace include guards with #pragma onceMichael Kubacki1-4/+1
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>
2021-12-07ShellPkg: Apply uncrustify changesMichael Kubacki1-14/+12
REF: https://bugzilla.tianocore.org/show_bug.cgi?id=3737 Apply uncrustify changes to .c/.h files in the ShellPkg package Cc: Andrew Fish <afish@apple.com> Cc: Leif Lindholm <leif@nuviainc.com> Cc: Michael D Kinney <michael.d.kinney@intel.com> Signed-off-by: Michael Kubacki <michael.kubacki@microsoft.com> Reviewed-by: Ray Ni <ray.ni@intel.com>
2019-04-09ShellPkg: Replace BSD License with BSD+Patent LicenseMichael D Kinney1-7/+1
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 <michael.d.kinney@intel.com> Reviewed-by: Ray Ni <ray.ni@intel.com> Reviewed-by: Jaben Carsey <jaben.carsey@intel.com>
2018-06-28ShellPkg: Clean up source filesLiming Gao1-3/+3
1. Do not use tab characters 2. No trailing white space in one line 3. All files must end with CRLF Contributed-under: TianoCore Contribution Agreement 1.1 Signed-off-by: Liming Gao <liming.gao@intel.com> Reviewed-by: Ruiyu Ni <ruiyu.ni@intel.com>
2016-10-19ShellPkg: Update sources to include MdePkg protocol definitionsRuiyu Ni1-3/+3
Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Ruiyu Ni <ruiyu.ni@intel.com> Reviewed-by: Jaben Carsey <jaben.carsey@intel.com>
2016-10-09ShellPkg/UefiShellLib: Remove unnecessary EFIAPIChen A Chen1-2/+0
Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Chen A Chen <chen.a.chen@intel.com> Reviewed-by: Jaben Carsey <jaben.carsey@intel.com> Reviewed-by: Ruiyu Ni <Ruiyu.ni@intel.com>
2016-09-23ShellPkg: Expand special output file to include "NULL" and case insensitiveTapan Shah1-0/+2
As per ECR 1349 change in UEFI Shell Specification 2.2, expanding a special output file name to include "NULL". Previously it only supported "NUL" as a special output file and it was case sensitive. With this change both "NUL" and "NULL" are special output file and checked as case insensitive. Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Tapan Shah <tapandshah@hpe.com> Reviewed-by: Jaben Carsey <jaben.carsey@intel.com>
2014-11-05ShellPkg: Fix timezone commandjcarsey1-2/+4
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@16300 6f19259b-4bc3-4df7-8a09-765794883524
2014-09-17ShellPkg: Remove redundant quotes in file path string for Shell command ↵Qiu Shumin1-0/+18
parameters. Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Qiu Shumin <shumin.qiu@intel.com> Reviewed-by: Jaben Carsey <Jaben.carsey@intel.com> git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@16122 6f19259b-4bc3-4df7-8a09-765794883524
2011-04-06add comments to function declarations and definitions and updated to match ↵jcarsey1-1/+1
coding style document. git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@11505 6f19259b-4bc3-4df7-8a09-765794883524
2011-03-25updated comments and added string-to-number conversion with return value to ↵jcarsey1-1/+27
indicate success or failure. All parameter checking updated to non-case-sensitive. git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@11424 6f19259b-4bc3-4df7-8a09-765794883524
2010-01-25fixed license header / copyright date on all files.jcarsey1-2/+2
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@9810 6f19259b-4bc3-4df7-8a09-765794883524
2010-01-12updating comments mostly. also added some new lib functions.jcarsey1-7/+31
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@9710 6f19259b-4bc3-4df7-8a09-765794883524
2009-11-20comment repairs.jcarsey1-1/+1
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@9460 6f19259b-4bc3-4df7-8a09-765794883524
2009-06-16git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@8563 ↵jcarsey1-0/+26
6f19259b-4bc3-4df7-8a09-765794883524
generated by cgit v1.2.3 (git 2.39.0) at 2026-09-15 13:39:44 +0300