delete-if-too-large

#!/usr/bin/env python3

# Copyright (C) 2022 Apple Inc. All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
# 1. Redistributions of source code must retain the above copyright
#    notice, this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright
#    notice, this list of conditions and the following disclaimer in the
#    documentation and/or other materials provided with the distribution.
#
# THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
# THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
# PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
# BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
# THE POSSIBILITY OF SUCH DAMAGE.

import sys
import os
import subprocess
from pathlib import Path

def main():
     for directory in sys.argv[1:]:
        print(f'Considering directory {directory} for deletion')
        directoryPath = Path(directory).resolve()

        if not directoryPath.exists():
            print(f'{directory} does not exist')
            return 1

        if not directoryPath.is_dir():
            print(f'{directory} is not a directory')
            return 1

        tenGigabytesInKiloBytes = 1024 * 1024  * 10
        
        # directorySize will be in kilobytes.
        directorySize = int(subprocess.check_output(['sudo', 'du', '-sk', directoryPath]).decode().strip().split()[0])

        if directorySize >= tenGigabytesInKiloBytes:
            print(f'{directory} is {directorySize}K in size. Deleting') 
            subprocess.call(['sudo', 'rm','-rf', directoryPath])
            print(f'Deleted {directory}')
        else:
            print(f'{directory} is {directorySize}K in size. Doing nothing') 


if __name__ == '__main__':
    sys.exit(main())