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from bs4 import BeautifulSoup
import requests
import os
import shutil


# Taken from http://stackoverflow.com/questions/23793987/python-write-file-to-directory-doesnt-exist
# Taken from http://stackoverflow.com/a/600612/119527
def mkdir_p(path):
    try:
        os.makedirs(path)
    except OSError as exc:  # Python >2.5
        if os.path.isdir(path):
            pass
        else:
            raise


def safe_open_w(path):
    ''' Open "path" for writing, creating any parent directories as needed.
    '''
    mkdir_p(os.path.dirname(path))
    return open(path, 'w+b')


URL = 'http://readsnk.com/'

r = requests.get(URL)
responseBody = r.text

soup = BeautifulSoup(responseBody, 'html.parser')
chapterList = soup.find('ul', {'class': 'chapters-list'}).find_all('a')

for chapter in chapterList:
    chapterLink = chapter['href']
    chapterNumber = chapterLink.partition('chapter-')[2][:-1]

    r = requests.get(chapterLink)
    chapterBody = r.text

    soup = BeautifulSoup(chapterBody, 'html.parser')
    imageList = soup.find_all('img', {'class': 'pages__img'})

    counterImage = 1

    for image in imageList:
        imageLink = image['src'].rstrip()
        imageNumber = '/' + str(format(counterImage, '03'))
        # ext = '.' + imageLink.split('.')[-1]
        ext = '.jpg'
        imageLocation = 'SNK/' + chapterNumber + imageNumber + ext

        # print imageLocation

        try:
            r = requests.get(imageLink, stream=True)
            if r.status_code == 200:
                with safe_open_w(imageLocation) as f:
                    r.raw.decode_content = True
                    shutil.copyfileobj(r.raw, f)
        except:
            pass

        counterImage += 1