103 lines
2.8 KiB
Python
Executable file
103 lines
2.8 KiB
Python
Executable file
#!/usr/bin/env python
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import argparse
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import contextlib
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import errno
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import os
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import shutil
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import subprocess
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import sys
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import tempfile
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import urllib2
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import zipfile
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SOURCE_ROOT = os.path.abspath(os.path.dirname(os.path.dirname(__file__)))
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class ProgramError(Exception):
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pass
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def main():
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try:
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args = parse_args()
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commit = head_commit()
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download_if_needed(args.path, args.url, commit, force=args.force)
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except ProgramError as e:
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return e.message
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def parse_args():
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parser = argparse.ArgumentParser(description='Download and extract '
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'atom-shell')
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parser.add_argument('-f', '--force', action='store_true',
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help='Overwrite destination if it already exists.')
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parser.add_argument('url', help='The base URL from which to download '
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'(i.e., the URL you passed to script/upload)')
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parser.add_argument('path', help='The path to extract to')
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return parser.parse_args()
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def head_commit():
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args = [
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'git',
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'--git-dir',
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os.path.join(SOURCE_ROOT, '.git'),
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'rev-parse',
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'HEAD',
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]
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return subprocess.check_output(args).strip()
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def download_if_needed(destination, base_url, commit, force):
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version_file = os.path.join(destination, '.version')
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existing_version = ''
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try:
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with open(version_file, 'r') as f:
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existing_version = f.readline().strip()
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except IOError as e:
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if e.errno != errno.ENOENT:
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raise
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if existing_version == commit:
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return
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if force:
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rm_rf(destination)
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elif os.path.exists(destination):
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raise ProgramError('Error: {0} already exists. Pass --force if you '
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'want to overwrite it.'.format(destination))
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sys.stderr.write('Downloading atom-shell {0}...\n'.format(commit))
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sys.stderr.flush()
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download_and_extract(destination, '{0}/{1}/atom-shell.zip'.format(base_url, commit))
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with open(version_file, 'w') as f:
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f.write('{0}\n'.format(commit))
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def download_and_extract(destination, url):
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print url
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with tempfile.TemporaryFile() as t:
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with contextlib.closing(urllib2.urlopen(url)) as u:
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while True:
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chunk = u.read(1024*1024)
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if not len(chunk):
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break
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sys.stderr.write('.')
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sys.stderr.flush()
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t.write(chunk)
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sys.stderr.write('\nExtracting...\n')
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sys.stderr.flush()
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with zipfile.ZipFile(t) as z:
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z.extractall(destination)
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def rm_rf(path):
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try:
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shutil.rmtree(path)
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except OSError as e:
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if e.errno != errno.ENOENT:
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raise
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if __name__ == '__main__':
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sys.exit(main())
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