Current File : //proc/thread-self/root/usr/lib/calibre/calibre/gui2/store/stores/mobileread/cache_update_thread.py
# -*- coding: utf-8 -*-
from __future__ import absolute_import, division, print_function, unicode_literals
__license__ = 'GPL 3'
__copyright__ = '2011, John Schember <john@nachtimwald.com>'
__docformat__ = 'restructuredtext en'
import time
from contextlib import closing
from threading import Thread
from lxml import html
from qt.core import (pyqtSignal, QObject)
from calibre import browser
from calibre.gui2.store.search_result import SearchResult
class CacheUpdateThread(Thread, QObject):
total_changed = pyqtSignal(int)
update_progress = pyqtSignal(int)
update_details = pyqtSignal(type(u''))
def __init__(self, config, seralize_books_function, timeout):
Thread.__init__(self)
QObject.__init__(self)
self.daemon = True
self.config = config
self.seralize_books = seralize_books_function
self.timeout = timeout
self._run = True
def abort(self):
self._run = False
def run(self):
url = 'https://www.mobileread.com/forums/ebooks.php?do=getlist&type=html'
self.update_details.emit(_('Checking last download date.'))
last_download = self.config.get('last_download', None)
# Don't update the book list if our cache is less than one week old.
if last_download and (time.time() - last_download) < 604800:
return
self.update_details.emit(_('Downloading book list from MobileRead.'))
# Download the book list HTML file from MobileRead.
br = browser()
raw_data = None
try:
with closing(br.open(url, timeout=self.timeout)) as f:
raw_data = f.read()
except:
return
if not raw_data or not self._run:
return
self.update_details.emit(_('Processing books.'))
# Turn books listed in the HTML file into SearchResults's.
books = []
try:
data = html.fromstring(raw_data)
raw_books = data.xpath('//ul/li')
self.total_changed.emit(len(raw_books))
for i, book_data in enumerate(raw_books):
self.update_details.emit(
_('%(num)s of %(tot)s books processed.') % dict(
num=i, tot=len(raw_books)))
book = SearchResult()
book.detail_item = ''.join(book_data.xpath('.//a/@href'))
book.formats = ''.join(book_data.xpath('.//i/text()'))
book.formats = book.formats.strip()
text = ''.join(book_data.xpath('.//a/text()'))
if ':' in text:
book.author, q, text = text.partition(':')
book.author = book.author.strip()
book.title = text.strip()
books.append(book)
if not self._run:
books = []
break
else:
self.update_progress.emit(i)
except:
pass
# Save the book list and it's create time.
if books:
self.config['book_list'] = self.seralize_books(books)
self.config['last_download'] = time.time()
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