#!/usr/bin/env python
# -*- coding: utf-8 -*-
#
# fetchvc.py fetch resources from verycd
#
# author: observer
# email: jingchaohu@gmail.com
# blog: http://obmem.com
# last edit @ 2009.12.23
import os

def ensure_dir(f):
    d = os.path.dirname(f)
    if not os.path.exists(d):
        os.makedirs(d)
	
def clear_idcache(id):
	#clear idcache:
	try:
		l1 = str(long(id)%10)
		l2 = str(long(id)/10%100)
		l3 = str(long(id)/1000)
		cachefile = path + '/idcache/%s/%s/%s.html'%(l1,l2,l3)
		if os.path.exists(cachefile):
			os.remove(cachefile)
	except:
		pass

def cache_image(links):
	if not links:
		return
	for l in links:
		#http://image-7.verycd.com/asdlkfjasdlfjsadkf()/thumb.jpg
		try:
			print '___caching',l	
			f = re.compile(r'http://[^/]*').sub(r'',l)
			f = f.replace('/','')
			ensure_dir(path+'/imgcache/1')
			ensure_dir(path+'/imgcache/%s/1'%f[0])
			ensure_dir(path+'/imgcache/%s/%s/1'%(f[0],f[1:3]))
			f = path + '/imgcache/%s/%s/'%(f[0],f[1:3])+f
			if (not os.path.exists(f)) or (os.path.getsize(f) == 0):
				open(f,'w').write(urllib.urlopen(l).read())
		except:
			pass