#import urllib
import urllib2
import os

link = "http://forum.tinycorelinux.net/Themes/tinycore/images/smflogo.png"
fname="smflogo.png"

print "opening url:", link
#site = urllib.urlopen(link)
#meta = site.info()
#site.close()
#length=int(meta.getheaders("Content-Length")[0])
#print "Content-Length:", length

if os.path.exists(fname):
    start=os.path.getsize(fname)
    hf=open(fname,"a")
else:
    start=0
    hf=open(fname,"w")
print "start:",start
step=(1024*8)-1

end=start+step


req = urllib2.Request(link)
f = urllib2.urlopen(req)
meta= f.info()
length=int(meta.getheaders("Content-Length")[0])
f.close()


if end > length:
    end= length


while(start<length):
    try:
        req = urllib2.Request(link)
        print start,"-",end,
        req.headers['Range'] = 'bytes=%s-%s' % (start, end)
        f = urllib2.urlopen(req)
        data=f.read()
        f.close()
        hf.write(data)
        start=end+1
        end=start+step
        if end>=length:
            end=length
        print start,"/",length,"%:",(start/(length*1.000))*100
    except Exception as e:
        print "failed",e

hf.close()