build: add coverity scan in ci #4

	name: Coverity Scan

	on:
	pull_request:
	push:
	branches:
	- master

	jobs:
	coverity:
	runs-on: ubuntu-24.04
	steps:
	- name: Checkout code
	uses: actions/checkout@v4

	- name: Install dependencies
	run: \|
	sudo apt-get update
	sudo apt-get install -y cmake build-essential wget

	- name: Download Coverity Build Tool
	run: \|
	wget -q https://scan.coverity.com/download/cxx/linux64 --post-data "token=${{ secrets.COVERITY_TOKEN }}&project=argtable3" -O coverity_tool.tgz
	tar xzf coverity_tool.tgz
	export COV_DIR=$(find . -type d -name 'cov-analysis*' \| head -n 1)
	echo "COV_DIR=$COV_DIR" >> $GITHUB_ENV

	- name: Build with Coverity
	run: \|
	mkdir build && cd build
	cmake ..
	cd ..
	$COV_DIR/bin/cov-build --dir cov-int cmake --build build

	- name: Create tarball
	run: tar czf cov-int.tgz cov-int

	- name: Submit to Coverity Scan
	env:
	COVERITY_TOKEN: ${{ secrets.COVERITY_TOKEN }}
	run: \|
	curl --form token=$COVERITY_TOKEN \
	--form email=tomghuang@gmail.com \
	--form file=@cov-int.tgz \
	--form version="$(date +'%Y-%m-%d')-$(git rev-parse --short HEAD)" \
	--form description="GitHub Actions Coverity Scan" \
	https://scan.coverity.com/builds?project=argtable3

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