mirror of
https://github.com/RicterZ/nhentai.git
synced 2025-04-19 18:31:24 +02:00
156 lines
4.8 KiB
Python
156 lines
4.8 KiB
Python
# coding: utf-
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import multiprocessing
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import signal
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from future.builtins import str as text
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import sys
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import os
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import requests
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import time
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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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semaphore = multiprocessing.Semaphore(1)
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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='', size=5, timeout=30, delay=0):
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self.size = size
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self.path = str(path)
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self.timeout = timeout
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self.delay = delay
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def download_(self, url, folder='', filename='', retried=0):
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if self.delay:
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time.sleep(self.delay)
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logger.info('Starting to download {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} exists, ignoring'.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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response = None
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with open(os.path.join(folder, base_filename.zfill(3) + extension), "wb") as f:
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i = 0
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while i < 10:
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try:
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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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except NHentaiImageNotExistException as e:
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raise e
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except Exception as e:
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i += 1
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if not i < 10:
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logger.critical(str(e))
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return 0, None
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continue
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break
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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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import traceback
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traceback.print_stack()
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logger.critical(str(e))
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return 0, None
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except KeyboardInterrupt:
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return -3, None
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return 1, url
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def _download_callback(self, 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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elif result == -2:
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logger.warning('Ctrl-C pressed, exiting sub processes ...')
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elif result == -3:
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# workers wont be run, just pass
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pass
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else:
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logger.log(15, '{0} downloaded 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}\' does not exist, creating.'.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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else:
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logger.warn('Path \'{0}\' already exist.'.format(folder))
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queue = [(self, url, folder) for url in queue]
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pool = multiprocessing.Pool(self.size, init_worker)
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[pool.apply_async(download_wrapper, args=item) for item in queue]
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pool.close()
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pool.join()
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def download_wrapper(obj, url, folder=''):
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if sys.platform == 'darwin' or semaphore.get_value():
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return Downloader.download_(obj, url=url, folder=folder)
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else:
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return -3, None
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def init_worker():
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signal.signal(signal.SIGINT, subprocess_signal)
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def subprocess_signal(signal, frame):
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if semaphore.acquire(timeout=1):
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logger.warning('Ctrl-C pressed, exiting sub processes ...')
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raise KeyboardInterrupt
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