73567db4fb
Change search API Change to Return an empty list when an error occurs Change the way to get tags Fix series and publisher perse error Rename a variable with the same name as the built-in
259 lines
8.7 KiB
Python
259 lines
8.7 KiB
Python
# -*- 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_JSON_URL = "https://www.douban.com/j/search"
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SEARCH_URL = "https://www.douban.com/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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CRITERIA_PATTERN = re.compile("criteria = '(.+)'")
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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(self,
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query: str,
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generic_cover: str = "",
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locale: str = "en") -> List[MetaRecord]:
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val = []
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if self.active:
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log.debug(f"start searching {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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query = "+".join(title_tokens)
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book_id_list = self._get_book_id_list_from_html(query)
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if not book_id_list:
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log.debug("No search results in Douban")
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return []
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with futures.ThreadPoolExecutor(
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max_workers=5, thread_name_prefix='douban') as executor:
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fut = [
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executor.submit(self._parse_single_book, book_id,
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generic_cover) for book_id in book_id_list
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]
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val = [
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future.result() for future in futures.as_completed(fut)
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if future.result()
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]
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return val
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def _get_book_id_list_from_html(self, query: str) -> List[str]:
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try:
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r = self.session.get(self.SEARCH_URL,
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params={
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"cat": 1001,
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"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 []
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html = etree.HTML(r.content.decode("utf8"))
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result_list = html.xpath(self.COVER_XPATH)
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return [
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self.ID_PATTERN.search(item.get("onclick")).group("id")
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for item in result_list[:10]
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if self.ID_PATTERN.search(item.get("onclick"))
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]
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def _get_book_id_list_from_json(self, query: str) -> List[str]:
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try:
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r = self.session.get(self.SEARCH_JSON_URL,
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params={
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"cat": 1001,
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"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 []
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results = r.json()
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if results["total"] == 0:
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return []
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return [
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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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def _parse_single_book(self,
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id: str,
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generic_cover: str = "") -> Optional[MetaRecord]:
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url = f"https://book.douban.com/subject/{id}/"
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log.debug(f"start parsing {url}")
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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(
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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 Exception:
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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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else:
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match.tags = self._get_tags(html.text)
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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(
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etree.tostring(description_element[-1]).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 = element.getnext()
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while next_element is not None and next_element.tag != "br":
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match.authors.append(next_element.text)
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next_element = next_element.getnext()
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elif self.PUBLISHER_PATTERN.search(text):
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if publisher := element.tail.strip():
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match.publisher = publisher
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else:
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match.publisher = element.getnext().text
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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 = self._clean_date(element.tail.strip())
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elif self.SERIES_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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def _clean_date(self, date: str) -> str:
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"""
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Clean up the date string to be in the format YYYY-MM-DD
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Examples of possible patterns:
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'2014-7-16', '1988年4月', '1995-04', '2021-8', '2020-12-1', '1996年',
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'1972', '2004/11/01', '1959年3月北京第1版第1印'
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"""
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year = date[:4]
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moon = "01"
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day = "01"
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if len(date) > 5:
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digit = []
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ls = []
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for i in range(5, len(date)):
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if date[i].isdigit():
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digit.append(date[i])
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elif digit:
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ls.append("".join(digit) if len(digit) ==
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2 else f"0{digit[0]}")
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digit = []
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if digit:
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ls.append("".join(digit) if len(digit) ==
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2 else f"0{digit[0]}")
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moon = ls[0]
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if len(ls) > 1:
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day = ls[1]
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return f"{year}-{moon}-{day}"
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def _get_tags(self, text: str) -> List[str]:
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tags = []
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if criteria := self.CRITERIA_PATTERN.search(text):
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tags.extend(
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item.replace('7:', '') for item in criteria.group().split('|')
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if item.startswith('7:'))
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return tags
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