Merge pull request #16936 from simrnjandu/patch-1 #20020

	name: indent

	on: [push, pull_request]

	concurrency:
	group: ${ {github.event_name }}-${{ github.workflow }}-${{ github.ref }}
	cancel-in-progress: ${{github.event_name == 'pull_request'}}

	permissions:
	contents: read

	jobs:
	indent:
	# run the indent checks

	name: indent
	runs-on: [ubuntu-20.04]

	steps:
	- uses: actions/checkout@v4
	with:
	fetch-depth: 100
	- uses: ssciwr/doxygen-install@v1
	with:
	version: "1.9.6"
	- name: setup
	run: \|
	./contrib/utilities/download_clang_format
	sudo apt update && sudo apt install graphviz perl texlive-bibtex-extra
	doxygen --version
	- name: indent
	run: \|
	./contrib/utilities/check_indentation.sh
	- name: documentation
	run: \|
	mkdir build
	cd build
	cmake -DDEAL_II_COMPONENT_DOCUMENTATION=ON -DDEAL_II_DOXYGEN_USE_MATHJAX=ON ..
	make -j 2 documentation
	cat doxygen.log
	# Suppress:
	# warning: Inheritance graph for 'SmartPointer' not generated, too many nodes (138), threshold is 50. Consider increasing DOT_GRAPH_MAX_NODES.
	# warning: Inheritance graph for 'Subscriptor' not generated, too many nodes (209), threshold is 50. Consider increasing DOT_GRAPH_MAX_NODES.
	sed -i '/Inheritance graph/d' doxygen.log
	# Suppress:
	# warning: explicit link request to '<function>' could not be resolved
	sed -i '/explicit link request to/d' doxygen.log
	# Remove empty lines
	sed -i '/^$/d' doxygen.log
	! [ -s doxygen.log ] \|\| exit 1
	tar -czf doxygen_documentation.tar.gz doc/doxygen
	- name: archive documentation
	uses: actions/upload-artifact@v4
	with:
	name: doxygen_documentation.tar.gz
	path: build/doxygen_documentation.tar.gz

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