mirror of
https://github.com/RicterZ/nhentai.git
synced 2025-04-20 11:01:17 +02:00
106 lines
3.7 KiB
Python
106 lines
3.7 KiB
Python
# coding: utf-
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from __future__ import unicode_literals, print_function
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from future.builtins import str as text
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import os
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import requests
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import threadpool
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try:
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from urllib.parse import urlparse
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except ImportError:
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from urlparse import urlparse
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from nhentai.logger import logger
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from nhentai.parser import request
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from nhentai.utils import Singleton
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requests.packages.urllib3.disable_warnings()
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class NhentaiImageNotExistException(Exception):
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pass
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class Downloader(Singleton):
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def __init__(self, path='', thread=1, timeout=30):
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if not isinstance(thread, (int, )) or thread < 1 or thread > 15:
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raise ValueError('Invalid threads count')
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self.path = str(path)
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self.thread_count = thread
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self.threads = []
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self.timeout = timeout
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def _download(self, url, folder='', filename='', retried=0):
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logger.info('Start downloading: {0} ...'.format(url))
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filename = filename if filename else os.path.basename(urlparse(url).path)
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base_filename, extension = os.path.splitext(filename)
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try:
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if os.path.exists(os.path.join(folder, base_filename.zfill(3) + extension)):
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logger.warning('File: {0} existed, ignore.'.format(os.path.join(folder, base_filename.zfill(3) +
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extension)))
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return 1, url
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with open(os.path.join(folder, base_filename.zfill(3) + extension), "wb") as f:
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response = request('get', url, stream=True, timeout=self.timeout)
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if response.status_code != 200:
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raise NhentaiImageNotExistException
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length = response.headers.get('content-length')
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if length is None:
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f.write(response.content)
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else:
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for chunk in response.iter_content(2048):
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f.write(chunk)
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except (requests.HTTPError, requests.Timeout) as e:
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if retried < 3:
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logger.warning('Warning: {0}, retrying({1}) ...'.format(str(e), retried))
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return 0, self._download(url=url, folder=folder, filename=filename, retried=retried+1)
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else:
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return 0, None
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except NhentaiImageNotExistException as e:
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os.remove(os.path.join(folder, base_filename.zfill(3) + extension))
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return -1, url
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except Exception as e:
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logger.critical(str(e))
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return 0, None
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return 1, url
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def _download_callback(self, request, result):
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result, data = result
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if result == 0:
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logger.warning('fatal errors occurred, ignored')
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# exit(1)
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elif result == -1:
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logger.warning('url {} return status code 404'.format(data))
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else:
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logger.log(15, '{0} download successfully'.format(data))
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def download(self, queue, folder=''):
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if not isinstance(folder, text):
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folder = str(folder)
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if self.path:
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folder = os.path.join(self.path, folder)
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if not os.path.exists(folder):
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logger.warn('Path \'{0}\' not exist.'.format(folder))
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try:
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os.makedirs(folder)
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except EnvironmentError as e:
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logger.critical('{0}'.format(str(e)))
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exit(1)
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else:
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logger.warn('Path \'{0}\' already exist.'.format(folder))
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queue = [([url], {'folder': folder}) for url in queue]
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self.thread_pool = threadpool.ThreadPool(self.thread_count)
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requests_ = threadpool.makeRequests(self._download, queue, self._download_callback)
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[self.thread_pool.putRequest(req) for req in requests_]
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self.thread_pool.wait()
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