text: import io
  import os
  import urllib.request
  import re
  import sys
  import math
  if len(sys.argv)<2:
  	sys.exit("no id")
  else:
  	cid=sys.argv[1]
  if cid.isdigit()==False:
  	sys.exit("id not a number")
  t=urllib.request.urlopen("http://www.6comic.com/comic/readmanga_"+cid+".html?ch=1-1").read().decode('BIG5')
  cname = re.search('<title>(.+?)</title>', t)
  if cname is None:
  	sys.exit('comic name is not found')
  else:
  	cname = str.rstrip(cname.group(1).split('-')[0])[:-2]
  	cname = str.rstrip(re.sub('\\|\/|\:|\*|\?|\"|<|>|\|', ' ', cname))	# Fix filename incorrect
  m=re.search("var chs=(\d+)",t)
  ch1=1
  ch2=m.group(1)
  if len(sys.argv)>=3:
  	m=re.search("^(\d+)-(\d+)$",sys.argv[2])
  	if m!=None:
  		ch1=m.group(1)
  		ch2=m.group(2)
  	elif sys.argv[2].isdigit():
  		ch1=ch2=sys.argv[2]
  	else:
  		sys.exit("ch not a number")
  print("download id="+cname+" ch="+str(ch1)+"-"+str(ch2))
  m=re.search("var cs='(.+?)';",t)
  code=m.group(1)
  hashc=code[0:3]
  if os.path.isdir("downloads")==False:
  	os.mkdir("downloads")
  if os.path.isdir("downloads/"+cname)==False:
  	os.mkdir("downloads/"+cname)
  for i in range(int(ch1),int(ch2)+1):
  	prestr=hashc+str(i)
  	prestr=prestr[-4:]
  	startid=code.find(prestr)
  	if startid==-1:
  		print("ch "+str(i)+" not found.")
  		continue
  	if os.path.isdir("downloads/"+cname+"/"+str(i))==False:
  		os.mkdir("downloads/"+cname+"/"+str(i))
  	domain=code[startid+5:startid+6]
  	folder=code[startid+6:startid+7]
  	m=re.search("(\d+)$",code[startid+7:startid+10])
  	page=m.group(1)
  	for j in range(1,int(page)+1):
  		print("downloading ch="+str(i)+" page="+str(j))
  		k=(j-1)%100+1;
  		startid2=startid+10+(k-1)%10*3+math.floor((k-1)/10)
  		imghash=code[startid2:startid2+3]
  		url="http://img"+domain+".6comic.com:99/"+folder+"/"+cid+"/"+str(i)+"/"+(str(j).zfill(3))+"_"+imghash+".jpg"
  		img=urllib.request.urlopen(url).read()
  		f=open("downloads/"+cname+"/"+str(i)+"/"+str(j)+".jpg","wb")
  		f.write(img)
  		f.close()
  