intial commit

scripts/read_version.py

@@ -0,0 +1,44 @@
+#!/usr/bin/env python3
+"""Read bump-my-version's current_version from a local file or Git ref."""
+
+from __future__ import annotations
+
+import argparse
+import subprocess
+import tomllib
+
+
+def parse_args() -> argparse.Namespace:
+	parser = argparse.ArgumentParser()
+	parser.add_argument("config_file")
+	parser.add_argument("--ref")
+	return parser.parse_args()
+
+
+def main() -> None:
+	args = parse_args()
+	try:
+		if args.ref:
+			content = subprocess.check_output(
+				["git", "show", f"{args.ref}:{args.config_file}"],
+			)
+		else:
+			with open(args.config_file, "rb") as config_file:
+				content = config_file.read()
+	except (OSError, subprocess.CalledProcessError) as error:
+		raise SystemExit(f"Could not load {args.config_file}: {error}") from error
+
+	try:
+		version = tomllib.loads(content.decode())["tool"]["bumpversion"]["current_version"]
+	except (KeyError, TypeError, UnicodeDecodeError, tomllib.TOMLDecodeError) as error:
+		raise SystemExit(
+			f"Could not read tool.bumpversion.current_version from {args.config_file}: {error}"
+		) from error
+
+	if not isinstance(version, str):
+		raise SystemExit("tool.bumpversion.current_version must be a string")
+	print(version)
+
+
+if __name__ == "__main__":
+	main()