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# file: /usr/lib/python2.5/site-packages/urlgrabber/customgrabber.py
import grabber, sys, os
import subprocess
import urllib2
def get_filesize(url):
usock = urllib2.urlopen(url)
size = usock.info().get('Content-Length')
if size is None:
size = 0
return float(size)
class AxelGrabber(grabber.URLGrabber):
def urlgrab(self, url, filename=None, **kwargs):
"""grab the file at and make a local copy at
If filename is none, the basename of the url is used.
urlgrab returns the filename of the local file, which may be
different from the passed-in filename if copy_local == 0.
"""
opts = self.opts.derive(**kwargs)
(url,parts) = opts.urlparser.parse(url, opts)
(scheme, host, path, parm, query, frag) = parts
def retryfunc(opts, url, filename):
fsize = get_filesize(url)
if (fsize/1024) < 100:
parts = 1
elif (fsize/1024) < 500:
parts = 2
elif (fsize/1024/1024) < 1:
parts = 3
elif (fsize/1024/1024) < 5:
parts = 4
elif (fsize/1024/1024) < 10:
parts = 6
elif (fsize/1024/1024) < 15:
parts = 8
else:
parts = 10
if os.path.exists(filename):
if not os.path.exists("%s.st" % filename):
os.unlink(filename)
p = subprocess.Popen(['/usr/bin/axel','-n','%s' % parts,'-a','-o',filename,url],stdout=sys.stdout,stderr=sys.stderr)
o = p.wait()
if o:
raise grabber.URLGrabError(-1)
return filename
return self._retry(opts, retryfunc, url, filename)
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