Add douban metadate provider
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xlivevil
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# -*- coding: utf-8 -*-
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# This file is part of the Calibre-Web (https://github.com/janeczku/calibre-web)
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# Copyright (C) 2022 xlivevil
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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import re
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from concurrent import futures
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from typing import List, Optional
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import requests
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from html2text import HTML2Text
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from lxml import etree
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from cps import logger
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from cps.services.Metadata import Metadata, MetaRecord, MetaSourceInfo
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log = logger.create()
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def html2text(html: str) -> str:
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h2t = HTML2Text()
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h2t.body_width = 0
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h2t.single_line_break = True
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h2t.emphasis_mark = "*"
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return h2t.handle(html)
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class Douban(Metadata):
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__name__ = "豆瓣"
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__id__ = "douban"
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DESCRIPTION = "豆瓣"
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META_URL = "https://book.douban.com/"
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SEARCH_URL = "https://www.douban.com/j/search"
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ID_PATTERN = re.compile(r"sid: (?P<id>\d+),")
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AUTHORS_PATTERN = re.compile(r"作者|译者")
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PUBLISHER_PATTERN = re.compile(r"出版社")
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SUBTITLE_PATTERN = re.compile(r"副标题")
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PUBLISHED_DATE_PATTERN = re.compile(r"出版年")
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SERIES_PATTERN = re.compile(r"丛书")
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IDENTIFIERS_PATTERN = re.compile(r"ISBN|统一书号")
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TITTLE_XPATH = "//span[@property='v:itemreviewed']"
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COVER_XPATH = "//a[@class='nbg']"
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INFO_XPATH = "//*[@id='info']//span[@class='pl']"
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TAGS_XPATH = "//a[contains(@class, 'tag')]"
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DESCRIPTION_XPATH = "//div[@id='link-report']//div[@class='intro']"
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RATING_XPATH = "//div[@class='rating_self clearfix']/strong"
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session = requests.Session()
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session.headers = {
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'user-agent':
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'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/98.0.4758.102 Safari/537.36 Edg/98.0.1108.56',
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}
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def search(
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self, query: str, generic_cover: str = "", locale: str = "en"
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) -> Optional[List[MetaRecord]]:
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if self.active:
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log.debug(f"starting search {query} on douban")
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if title_tokens := list(
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self.get_title_tokens(query, strip_joiners=False)
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):
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query = "+".join(title_tokens)
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try:
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r = self.session.get(
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self.SEARCH_URL, params={"cat": 1001, "q": query}
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)
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r.raise_for_status()
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except Exception as e:
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log.warning(e)
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return None
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results = r.json()
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if results["total"] == 0:
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return val
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book_id_list = [
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self.ID_PATTERN.search(item).group("id")
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for item in results["items"][:10] if self.ID_PATTERN.search(item)
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]
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with futures.ThreadPoolExecutor(max_workers=5) as executor:
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fut = [
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executor.submit(self._parse_single_book, book_id, generic_cover)
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for book_id in book_id_list
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]
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val = [
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future.result()
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for future in futures.as_completed(fut) if future.result()
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]
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return val
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def _parse_single_book(
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self, id: str, generic_cover: str = ""
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) -> Optional[MetaRecord]:
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url = f"https://book.douban.com/subject/{id}/"
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try:
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r = self.session.get(url)
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r.raise_for_status()
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except Exception as e:
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log.warning(e)
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return None
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match = MetaRecord(
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id=id,
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title="",
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authors=[],
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url=url,
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source=MetaSourceInfo(
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id=self.__id__,
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description=self.DESCRIPTION,
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link=self.META_URL,
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),
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)
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html = etree.HTML(r.content.decode("utf8"))
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match.title = html.xpath(self.TITTLE_XPATH)[0].text
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match.cover = html.xpath(self.COVER_XPATH)[0].attrib["href"] or generic_cover
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try:
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rating_num = float(html.xpath(self.RATING_XPATH)[0].text.strip())
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except ValueError:
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rating_num = 0
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match.rating = int(-1 * rating_num // 2 * -1) if rating_num else 0
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tag_elements = html.xpath(self.TAGS_XPATH)
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if len(tag_elements):
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match.tags = [tag_element.text for tag_element in tag_elements]
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description_element = html.xpath(self.DESCRIPTION_XPATH)
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if len(description_element):
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match.description = html2text(etree.tostring(
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description_element[-1], encoding="utf8").decode("utf8"))
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info = html.xpath(self.INFO_XPATH)
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for element in info:
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text = element.text
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if self.AUTHORS_PATTERN.search(text):
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next = element.getnext()
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while next is not None and next.tag != "br":
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match.authors.append(next.text)
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next = next.getnext()
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elif self.PUBLISHER_PATTERN.search(text):
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match.publisher = element.tail.strip()
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elif self.SUBTITLE_PATTERN.search(text):
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match.title = f'{match.title}:' + element.tail.strip()
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elif self.PUBLISHED_DATE_PATTERN.search(text):
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match.publishedDate = element.tail.strip()
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elif self.SUBTITLE_PATTERN.search(text):
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match.series = element.getnext().text
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elif i_type := self.IDENTIFIERS_PATTERN.search(text):
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match.identifiers[i_type.group()] = element.tail.strip()
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return match
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