def _download_file(self, url, filename):
"Download url to filename in workdir."
pathname = os.path.join(self.workdir, filename)
if self.dsc.verify_file(pathname):
Logger.debug('Using existing %s', filename)
return True
size = [
entry['size'] for entry in self.dsc['Files']
if entry['name'] == filename
]
assert len(size) == 1
size = int(size[0])
parsed = urlparse(url)
if not self.quiet:
Logger.normal('Downloading %s from %s (%0.3f MiB)', filename,
parsed.hostname, size / 1024.0 / 1024)
if parsed.scheme == 'file':
in_ = open(parsed.path, 'rb')
else:
try:
in_ = self.url_opener.open(url)
except URLError:
return False
downloaded = 0
bar_width = 60
try:
with open(pathname, 'wb') as out:
while True:
block = in_.read(10240)
if block == b'':
break
downloaded += len(block)
out.write(block)
if not self.quiet:
percent = downloaded * 100 // size
bar = '=' * int(round(downloaded * bar_width / size))
bar = (bar + '>' + ' ' * bar_width)[:bar_width]
Logger.stdout.write('[%s] %#3i%%\r' % (bar, percent))
Logger.stdout.flush()
in_.close()
finally:
if not self.quiet:
Logger.stdout.write(' ' * (bar_width + 7) + '\r')
Logger.stdout.flush()
if not self.dsc.verify_file(pathname):
Logger.error('Checksum for %s does not match.', filename)
return False
return True
def component(self):
"Cached archive component, in available"
if not self._component:
Logger.debug('Determining component from Launchpad')
self._component = self.lp_spph.getComponent()
return self._component