bump

#!/usr/bin/env python3

# A simple replacement for the bumpversion Python package that doesn't screw with version control.

import os
import sys

VERSION_FILE = 'abm/VERSION'


def main():
	if len(sys.argv) != 2 and len(sys.argv) != 3:
		print("USAGE: bump [major|minor|revision|build|release]")
		return
	
	if not sys.argv[1] in ['major', 'minor', 'revision', 'build', 'release']:
		print("ERROR: Invalid command. Must be one of major, minor, revision, build, or release")
		return
		
	with open(VERSION_FILE, 'r') as f:
		version_string = f.read().strip()

	prefix = version_string
	suffix = None
	release = None
	build = None
	if '-' in version_string:
		# This is a development build
		prefix, suffix = version_string.split('-')
		release,build = suffix.split('.')
		build = int(build)
	parts = prefix.split('.')
	major = int(parts[0])
	minor = int(parts[1])
	revision = int(parts[2])

	if sys.argv[1] in ['major', 'minor', 'revision'] and release is not None:
		print(f"ERROR: Cannot bump the {sys.argv[1]} version for a development build")
		return

	if len(sys.argv) == 3:
		if build is not None:
			print("ERROR: This is already a development build")
			return
		release = sys.argv[2]
		build = 1

	type = sys.argv[1]
	if type == 'major':	
		major += 1
		minor = 0
		revision = 0
	elif type == 'minor':
		minor += 1
		revision = 0
	elif type == 'revision':
		revision += 1
	elif type == 'build':
		if build is None:
			print(f"ERROR: version {version_string} is not a development build")
			return
		build += 1
	elif type == 'release':
		if build is None:
			print(f"ERROR: version {version_string} is not a development build")
			return
		build = None
	else:
		print(f"BUG: Invalid command {type}")
		return
		
	if build is None:
		version_string = f"{major}.{minor}.{revision}"
	else:
		version_string = f"{major}.{minor}.{revision}-{release}.{build}"

	with open(VERSION_FILE, 'w') as f:
		f.write(version_string)
	print(version_string)

		

if __name__ == '__main__':
	main()