mirror of
https://github.com/denoland/rusty_v8.git
synced 2024-12-26 09:13:46 -05:00
64 lines
1.9 KiB
Python
Executable file
64 lines
1.9 KiB
Python
Executable file
#!/usr/bin/env python
|
|
# Copyright (c) 2012 The Chromium Authors. All rights reserved.
|
|
# Use of this source code is governed by a BSD-style license that can be
|
|
# found in the LICENSE file.
|
|
|
|
from __future__ import print_function
|
|
import argparse
|
|
import os
|
|
import sys
|
|
import time
|
|
|
|
try:
|
|
from urllib2 import HTTPError, URLError, urlopen
|
|
except ImportError: # For Py3 compatibility
|
|
from urllib.error import HTTPError, URLError
|
|
from urllib.request import urlopen
|
|
|
|
|
|
def DownloadUrl(url, output_file):
|
|
"""Download url into output_file."""
|
|
CHUNK_SIZE = 4096
|
|
num_retries = 3
|
|
retry_wait_s = 5 # Doubled at each retry.
|
|
|
|
while True:
|
|
try:
|
|
sys.stdout.write('Downloading %s...' % url)
|
|
sys.stdout.flush()
|
|
response = urlopen(url)
|
|
bytes_done = 0
|
|
while True:
|
|
chunk = response.read(CHUNK_SIZE)
|
|
if not chunk:
|
|
break
|
|
output_file.write(chunk)
|
|
bytes_done += len(chunk)
|
|
if bytes_done == 0:
|
|
raise URLError("empty response")
|
|
print(' Done.')
|
|
return
|
|
except URLError as e:
|
|
sys.stdout.write('\n')
|
|
print(e)
|
|
if num_retries == 0 or isinstance(e, HTTPError) and e.code == 404:
|
|
raise e
|
|
num_retries -= 1
|
|
print('Retrying in %d s ...' % retry_wait_s)
|
|
sys.stdout.flush()
|
|
time.sleep(retry_wait_s)
|
|
retry_wait_s *= 2
|
|
|
|
|
|
def main():
|
|
parser = argparse.ArgumentParser(description='Download a file')
|
|
parser.add_argument('--filename', help='where to put the file')
|
|
parser.add_argument('--url', help='what url to download')
|
|
args = parser.parse_args()
|
|
with open(args.filename, "wb") as f:
|
|
DownloadUrl(args.url, f)
|
|
return 0
|
|
|
|
|
|
if __name__ == '__main__':
|
|
sys.exit(main())
|