Doxygen improvements #259

	name: cppcheck
	on: [push]

	jobs:
	build:
	name: cppcheck-test
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v3

	- name: cppcheck
	uses: deep5050/cppcheck-action@main
	with:
	github_token: ${{ secrets.GITHUB_TOKEN}}
	std: c++17
	inline_suppression: enable
	exclude_check: ./tests
	output_file: cppcheck_report.txt
	other_options: --library=wxwidgets,windows

	- name: print output
	run: \|
	REPORTFILE=./cppcheck_report.txt
	WARNINGSFILE=./warnings.txt
	if test -f "$REPORTFILE"; then
	# Filter innocuous warnings and write the remaining ones to another file.
	# Note that you can add more warnings by adding it in the parenthesis,
	# with "\\|" in front of it. For example, "(missingIncludeSystem\\|useStlAlgorithm\)"
	sed 's/\[$missingIncludeSystem\\|assertWithSideEffect\\|unknownMacro\\|internalAstError\\|missingInclude\\|unusedFunction\\|ConfigurationNotChecked\\|toomanyconfigs\\|unmatchedSuppression\\|useStlAlgorithm$\]//g' "$REPORTFILE" > "$WARNINGSFILE"
	# are there any remaining warnings?
	if grep -qP '\[[a-zA-Z0-9]{5,}\]' "$WARNINGSFILE"; then
	# print the remaining warnings
	echo Warnings detected:
	echo ==================
	cat "$WARNINGSFILE" \| grep -P '\[[a-zA-Z0-9]{5,}\]'
	# fail the job
	exit 1
	else
	echo No warnings detected
	fi
	else
	echo "$REPORTFILE" not found
	fi

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