smartknob/proto/generate_protobuf.py
Scott Bezek acfc85f72b
Python software example (#106)
Add protobuf/cobs/crc32 framework code and a really basic python example
2023-02-04 12:34:12 -08:00

51 lines
1.8 KiB
Python

import os
import sys
if __name__ == '__main__':
if 'PIPENV_ACTIVE' not in os.environ:
sys.exit(f'This script should be run in a Pipenv.\n\nRun it as:\npipenv run python {os.path.basename(__file__)}')
from pathlib import Path
import shutil
import subprocess
def run():
SCRIPT_PATH = Path(__file__).absolute().parent
REPO_ROOT = SCRIPT_PATH.parent
proto_path = REPO_ROOT / 'proto'
nanopb_path = REPO_ROOT / 'thirdparty' / 'nanopb'
# Make sure nanopb submodule is available
if not os.path.isdir(nanopb_path):
print(f'Nanopb checkout not found! Make sure you have inited/updated the submodule located at {nanopb_path}', file=sys.stderr)
exit(1)
nanopb_generator_path = nanopb_path / 'generator' / 'nanopb_generator.py'
c_generated_output_path = REPO_ROOT / 'firmware' / 'src' / 'proto_gen'
proto_files = [f for f in os.listdir(proto_path) if f.endswith('.proto')]
assert len(proto_files) > 0, 'No proto files found!'
# Generate C files via nanopb
subprocess.check_call(['python3', nanopb_generator_path, '-D', c_generated_output_path] + proto_files, cwd=proto_path)
# Use nanopb's packaged protoc to generate python bindings
protoc_path = nanopb_path / 'generator' / 'protoc'
python_generated_output_path = REPO_ROOT / 'software' / 'python' / 'proto_gen'
python_generated_output_path.mkdir(parents=True, exist_ok=True)
subprocess.check_call([protoc_path, '--version'])
subprocess.check_call([
protoc_path,
'--python_out',
python_generated_output_path,
] + proto_files, cwd=proto_path)
# Copy nanopb's compiled options proto
shutil.copy2(nanopb_path / 'generator' / 'proto' / 'nanopb_pb2.py', python_generated_output_path)
if __name__ == '__main__':
run()