versioncheck #1

	name: Version check
	on: [ push ]
	jobs:
	check:
	runs-on: ubuntu-20.04
	steps:
	- uses: actions/checkout@v4
	with:
	# So that we get the branch for `GITHUB_HEAD_REF`.
	fetch-depth: 0
	- name: Check version
	run: \|
	import os
	import re
	import subprocess

	def version() :

	versions = {}
	versionRe = re.compile( r"^(gaffer.Version.) = (\S+)" )
	with open( "SConstruct" ) as sconstruct :
	for line in sconstruct.readlines() :
	versionMatch = versionRe.match( line )
	if versionMatch :
	versions[versionMatch.group( 1 )] = versionMatch.group( 2 ).strip( "'\"" )

	return [
	int( versions["gafferMilestoneVersion"] ),
	int( versions["gafferMajorVersion"] ),
	int( versions["gafferMinorVersion"] ),
	int( versions["gafferPatchVersion"] ),
	]

	mergedVersion = version()
	print( mergedVersion )

	sourceBranch = "main" #os.environ["GITHUB_HEAD_REF"]
	subprocess.check_call( [ "git", "checkout", sourceBranch ] )
	sourceVersion = version()

	if sourceVersion != mergedVersion :
	sys.stderr.write(
	"Source branch version {} does not match merged version {}\n".format(
	sourceVersion, mergedVersion
	)
	)
	sys.exit( 1 )

	print( os.environ )

	shell: python

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