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novel.py
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novel.py
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import threading
import re
from bs4 import BeautifulSoup
import requests
from global_variable import HAS_QT, HEADERS
if HAS_QT:
from global_variable import SENDER
class Novel():
"""
get novel information for creating epub file
Attributes:
volume_name: A string represent the volume name
volume_number: A string represent the volume number
volume_author: A string represent the author
volume_illustrator: A string represent the illustrator
volume_introduction: A string represent the introduction
volume_cover_url: A string represent the cover_url
chapter_links: A string represent the chapter links
output_dir: A stirng represent the epub save path
cover_path: A string represent the cover path
book_name: A string represent the book name
chapter: A list represent the chapter
base_path: A string represent the epub temp path
"""
def __init__(self, url, single_thread):
self.url = url
self.single_thread = single_thread
self.chapters = []
self.volume_name = ''
self.volume_number = ''
self.author = ''
self.illustrator = ''
self.introduction = ''
self.cover_url = ''
self.chapters_links = []
self.base_path = ''
@staticmethod
def parse_page(url):
"""
parse page with BeautifulSoup
Args:
url: A string represent the url to be parsed
Return:
A BeatifulSoup element
"""
r = requests.get(url, headers=HEADERS)
r.encoding = 'utf-8'
return BeautifulSoup(r.text)
@staticmethod
def find_chapter_links(soup):
"""
extract chapter links from page
Args:
soup: A parsed page
Returns:
a list contains the book's chapter links
"""
temp_chapter_links = soup.select(
'body div.content div.container div.row-fluid div.span9 div.well div.row-fluid ul.lk-chapter-list li')
find_chapter_links = re.compile(r'<a href="(.*)">')
chapter_links = []
for i in temp_chapter_links:
chapter_links.append(find_chapter_links.search(str(i)).group(1))
return chapter_links
def find_volume_name_number(self, soup):
name_and_number = str(soup.select('h1.ft-24 strong'))[1:-1].replace('</strong>', '').split('\n')
self.volume_name = name_and_number[1].strip()
self.volume_number = name_and_number[2].strip()
self.print_info('Volume_name:' + self.volume_name + ',Volume_number:' + self.volume_number)
@property
def book_name(self):
return self.volume_name + ' ' + self.volume_number
def find_author_illustrator(self, soup):
temp_author_name = soup.select('table.lk-book-detail td')
find_author_name = re.compile(r'target="_blank">(.*)</a></td>')
find_illustrator_name = re.compile(r'<td>(.*)</td>')
self.author = find_author_name.search(str(temp_author_name[3])).group(1)
self.illustrator = find_illustrator_name.search(str(temp_author_name[5])).group(1)
self.print_info('Author:' + self.author + '\nillustrator:' + self.illustrator)
def find_introduction(self, soup):
temp_introduction = soup.select(
'html body div.content div.container div.row-fluid div.span9 div.well div.row-fluid div.span10 p')
find_introduction = re.compile(r'<p style="width:42em; text-indent: 2em;">(.*)</p>')
self.introduction = find_introduction.search(str(temp_introduction).replace('\n', '')).group(1)
def find_cover_url(self, soup):
temp_cover_url = soup.select(
'div.container div.row-fluid div.span9 div.well div.row-fluid div.span2 div.lk-book-cover a')
find_cover_url = re.compile(r'<img src="(.*)"/>')
self.cover_url = 'http://lknovel.lightnovel.cn' + find_cover_url.search(str(temp_cover_url)).group(1)
def extract_epub_info(self):
"""
extract volume's basic info
Args:
soup: A parsed page
Return:
A dict contains the volume's info
"""
soup = self.parse_page(self.url)
self.find_volume_name_number(soup)
self.find_author_illustrator(soup)
self.find_introduction(soup)
self.find_cover_url(soup)
self.chapters_links = self.find_chapter_links(soup)
@staticmethod
def get_new_chapter_name(soup):
"""
get the formal chapter name
Args:
soup: A parsed page
Returns:
A string contain the chapter name
"""
chapter_name = soup.select('h3.ft-20')[0].get_text()
new_chapter_name = chapter_name[:chapter_name.index('章') + 1] + ' ' + chapter_name[chapter_name.index('章') + 1:]
return new_chapter_name
@staticmethod
def print_info(info):
try:
print(info)
if HAS_QT:
SENDER.sigChangeStatus.emit(info)
except UnicodeDecodeError as e:
print('Ignored:', e)
@staticmethod
def get_content(soup):
"""
extract contents from each page
Args:
soup: parsed page
Return:
A list contain paragraphs of one chapter
"""
content = []
temp_chapter_content = soup.select('div.lk-view-line')
find_picture_url = re.compile(r'data-cover="(.*)" src="')
for line in temp_chapter_content:
if 'lk-view-img' not in str(line):
content.append(line.get_text().strip())
else:
picture_url = find_picture_url.search(str(line)).group(1)
content.append(picture_url)
return content
def add_chapter(self, chapter):
"""
add chapter
chapter structure：a tuple (chapter number,chapter name,content)
"""
self.chapters.append(chapter)
def extract_chapter(self, url, number):
"""
add each chapter's content to the Epub instance
Args:
url: A string represent the chapter url to be added
epub: A Epub instance
number: A int represent the chapter's number
"""
try:
soup = self.parse_page(url)
new_chapter_name = self.get_new_chapter_name(soup)
self.print_info(new_chapter_name)
content = self.get_content(soup)
self.add_chapter((number, new_chapter_name, content))
except Exception as e:
if HAS_QT:
SENDER.sigWarningMessage.emit('错误', str(e) + '\nat:' + url)
SENDER.sigButton.emit()
print(self.url)
raise e
def get_chapter_content(self):
"""
start extract every chapter in epub
Args:
epub: The Epub instance to be created
"""
th = []
if not self.single_thread:
for i, link in enumerate(self.chapters_links):
t = threading.Thread(target=self.extract_chapter, args=(link, i))
t.start()
th.append(t)
for t in th:
t.join()
else:
for i, link in enumerate(self.chapters_links):
self.extract_chapter(link, i)
def get_novel_information(self):
"""get novel information"""
self.extract_epub_info()
self.get_chapter_content()
self.print_info('novel信息获取完成')
def novel_information(self):
return {'chapter': self.chapters, 'volume_name': self.volume_name, 'volume_number': self.volume_number,
'book_name': self.book_name, 'author': self.author,
'illustrator': self.illustrator, 'introduction': self.introduction, 'cover_url': self.cover_url}