add find existant vs non-existant keys #75

	name: clang-tidy-review

	# You can be more specific, but it currently only works on pull requests
	on: [pull_request]

	jobs:
	check-diff:
	runs-on: ubuntu-latest
	outputs:
	handle: ${{ steps.check.outputs.run }}
	steps:

	- name: Checkout
	uses: actions/checkout@v4
	with:
	ref: ${{ github.event.pull_request.head.ref }}
	repository: ${{ github.event.pull_request.head.repo.full_name }}
	fetch-depth: 2

	# The goal is to force this to pass if it does not need to run.
	- name: Check the diff
	id: check
	run: \|
	echo "Here are the changed C files:"
	echo "$(git --no-pager diff --name-only HEAD HEAD~1 \| grep -E '\.(c\|h)$')"
	if git --no-pager diff --name-only HEAD HEAD~1 \| grep -qE '\.(c\|h)$'; then
	echo "run=true" >> $GITHUB_OUTPUT
	echo "C files have changed, reviewing now..."
	else
	echo "run=false" >> $GITHUB_OUTPUT
	echo "C files have not changed, skipping review..."
	fi

	review:
	runs-on: ubuntu-latest
	needs: check-diff
	if: ${{ needs.check-diff.outputs.handle == 'true' }}

	steps:

	- name: Checkout
	uses: actions/checkout@v4

	- name: Get CMake
	uses: lukka/get-cmake@latest

	- name: Generate Compile Commands
	run: cmake --preset=clang-deb

	- name: Review
	uses: ZedThree/clang-tidy-review@v0.20.1
	id: review
	with:
	split_workflow: true
	config_file: ./.clang-tidy

	- name: Upload artifacts
	uses: ZedThree/clang-tidy-review/upload@v0.20.1
	id: upload-review

	# If there are any comments, fail the check
	- if: steps.review.outputs.total_comments > 0
	run: exit 1

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