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#/usr/bin/python2
import urllib2
import random
import Image
import os.path
import re
class Comic(object):
def __init__(self, comicurl, filenformat, updateurl, updatere):
self.comicurl = comicurl
self.filenformat = filenformat
self.updateurl = updateurl
self.updatere = updatere
self.last = 0
def update_last(self):
opener = urllib2.build_opener()
opener.addheaders = [('User-agent', 'Mozilla/5.0 (Windows NT 6.3; WOW64; Trident/7.0; rv:11.0) like Gecko')]
url = opener.open(self.updateurl)
data = url.read()
url.close()
result = re.search(self.updatere, data).group('link') # search for last image link
if(not result.startswith('http')):
result = self.comicurl + result
self.last = int(re.search(r'(?P<id>\d+)\.(?i)(jpg|png|gif|bmp)$', result).group('id')) # get file name's content before '.'
def get_link(self, number = -1):
opener = urllib2.build_opener() # for a UA
opener.addheaders = [('User-agent', 'Mozilla/5.0 (Windows NT 6.3; WOW64; Trident/7.0; rv:11.0) like Gecko')]
if(number == -1):
urlstr = self.randomurl
else:
urlstr = self.comicurl + (self.filenformat % number)
filere = re.compile(r'.*?[^\s/]+\.(?i)(jpg|png|gif|bmp)$')
if(filere.match(urlstr)):
return urlstr
url = opener.open(urlstr)
data = url.read() # download web page
url.close()
result = re.search(self.updatere, data) # search for image link
if(result):
return result.group('link')
else:
print "Please check your regular expression: no matches found"
return None
def display_random(self):
# urlstr: url
# picstr: random number; appended to url
# pref: prefix for file name; e.g. Comics/xkcd/
# srcre: regular expression in case url + picstr is not a direct link
urlstr = self.get_link(random.randrange(0, self.last)) # get direct image download link by RE
fname = "Comics/" + self.comicurl.replace("http://", "").replace("/", "") + int(re.search(r'(?P<id>\d+)\.(?i)(jpg|png|gif|bmp)$', result).group('id'))
opener = urllib2.build_opener() # for a UA
opener.addheaders = [('User-agent', 'Mozilla/5.0 (Windows NT 6.3; WOW64; Trident/7.0; rv:11.0) like Gecko')]
directory = "Comics/"
if not os.path.exists(directory): # create subdirectory if needed
os.makedirs(directory)
if not os.path.isfile(fname):
# download picture and open if not done yet
url = opener.open(urlstr)
data = url.read()
url.close()
pic = open(fname, 'w')
pic.write(data)
pic.close()
Image.open(fname).show()
ruthe = Comic("http://ruthe.de/cartoons/", "strip_%d.jpg", "http://ruthe.de", r'<img src="(?P<link>.*?)" alt="Cartoon" border="0" />')
ruthe.update_last()
ruthe.display_random()
xkcd = Comic("xkcd.com", "imgs.%s.com/comics/", r'Permanent link to this comic: (?P<link>.*?)')
xkcd.update_last()
xkcd.display_random("/1/")
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