"""Copy a Dart package into a directory suitable for release."""
import argparse
import os
import shutil
import sys
def main():
parser = argparse.ArgumentParser(description='Copy a Dart package')
parser.add_argument('--source', type=str, help='Source directory assembled by dart_pkg.py')
parser.add_argument('--dest', type=str, help='Destination directory for the package')
args = parser.parse_args()
if os.path.exists(args.dest):
shutil.rmtree(args.dest)
shutil.copytree(args.source, args.dest, ignore=shutil.ignore_patterns('packages'))
if __name__ == '__main__':
sys.exit(main())