electron/script/lib/util.py

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import atexit
import shutil
import tarfile
import tempfile
import urllib2
def download(text, url, filename):
directory = tempfile.mkdtemp(prefix='atom-shell-')
atexit.register(shutil.rmtree, directory)
web_file = urllib2.urlopen(url)
file_size = int(web_file.info().getheaders("Content-Length")[0])
downloaded_size = 0
block_size = 128
with open(os.path.join(directory, filename), 'w+') as local_file:
while True:
buf = web_file.read(block_size)
if not buf:
break
downloaded_size += len(buf)
local_file.write(buf)
percent = downloaded_size * 100. / file_size
status = "\r%s %10d [%3.1f%%]" % (text, downloaded_size, percent)
print status,
print
return directory
def extract_tarball(tarball_path, member, path):
with tarfile.open(tarball_path) as tarball:
tarball.extract(member, path)
def safe_unlink(path):
try:
os.unlink(path)
except OSError as e:
if e.errno != errno.ENOENT:
raise
def safe_mkdir(path):
try:
os.makedirs(path)
except OSError as e:
if e.errno != errno.EEXIST:
raise