Draft: clang-format init

[tigercosmos]

For #1248 This is currently a draft for testing clang-format.

The .clang-format is now the default setting from clang-format 11

Welcome options for the coding styles.

Things to discuss:

• The official clang-format version (based on difference OS, the default clang-format are also different. Once we choose the official version, users may need to go to LLVM website to download the corresponding version. For example, Debian 11 default is clang-format-11, Ubuntu 22 default is clang-format 14.
• The rules in .clang-format. Basically we follow LLVM style, but may have some customized styles settings.

People can try to clone this patch, modify the .clang-format file, and run ./run_format.bash to see the result.

main file to check:

• .clang-format
• .github/workflows/format.yml

cc. @seladb @clementperon @egecetin @echo-Mike @sashashura

[egecetin]

pre-commit hooks already supports to clang-format check. Maybe instead of adding a new runner enabling it from config file might be better.

PcapPlusPlus/.pre-commit-config.yaml

Lines 17 to 22 in 3ffed82

	rev: v1.3.5
	hooks:
	- id: cppcheck
	args: ["--std=c++11", "--language=c++", "--suppressions-list=cppcheckSuppressions.txt", "--inline-suppr", "--force"]
	# - id: clang-format
	- repo: https://github.com/codespell-project/codespell

People can run pre-commit run --all-files to check locally also they can see is there any other formatting issues. As a default it search .clang-format in workspace directory. This also eliminates the need of run_format.bash