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epub_maker.py
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import os
import re
import shutil
import zipfile
import random
import requests
import requests_cache
requests_cache.install_cache('img_cache')
def rewrite_file(file_path):
f = open(file_path, 'r', encoding='utf-8')
file_content = f.read()
f.close()
f = open(file_path, 'w', encoding='utf-8')
return file_content, f
def copy_file(src_path, dst_path):
with open(src_path, 'r', encoding='utf-8') as f:
content = f.read()
return content, open(dst_path, 'w', encoding='utf-8')
def get_random_hex(length):
hex_str = '0123456789abcdef'
return ''.join([random.choice(hex_str) for _ in range(length)])
src_re = re.compile(r'src="([^"]+)"')
def get_src_from_text(text):
src = src_re.findall(text)
return src[0] if src else None
play_order_re = re.compile(r'playOrder="([^"]+)"')
def get_all_play_order(text):
return play_order_re.findall(text)
class EpubMaker:
work_dir = ''
template_dir = 'EpubTemplate/'
def __init__(self, work_dir, title, author, push_date=None, source=None, enable_download_img=True):
self.work_dir = work_dir
self.title = title
self.author = author
self.push_date = push_date
self.source = source
self.play_order = 0
self.enable_download_img = enable_download_img
self.make_work_dir()
def make_work_dir(self):
if os.path.exists(self.work_dir):
self.init_play_order()
return
shutil.copytree(self.template_dir, self.work_dir)
self.init_coverpage()
self.init_fb_ncx()
self.init_fb_opf()
self.init_play_order()
def zip_dir_to_epub(self, path, file_name):
zip_handler = zipfile.ZipFile('result/{name}.epub'.format(name=file_name), 'w', zipfile.ZIP_DEFLATED)
for root, dirs, files in os.walk(path):
for file in files:
zip_handler.write(os.path.join(root, file), os.path.join(root.replace(self.work_dir, ''), file))
def init_coverpage(self):
file_content, f = rewrite_file(self.work_dir + 'OPS/coverpage.html')
file_content = file_content.replace('{Title}', self.title)
file_content = file_content.replace('{Author}', '作者：%s' % self.author)
file_content = file_content.replace('{PushTime}', '发表时间：%s' % self.push_date)
file_content = file_content.replace('{Source}', self.source)
f.write(file_content)
f.close()
def init_fb_ncx(self):
fc, f = rewrite_file(self.work_dir + 'OPS/fb.ncx')
# 51037e82-03ff-11dd-9fbb-0018f369440e
uid = '%s-%s-%s-%s-%s' % \
(get_random_hex(8), get_random_hex(4), get_random_hex(4), get_random_hex(4), get_random_hex(12))
fc = fc.replace('{Uid}', uid)
fc = fc.replace('{Title}', self.title)
fc = fc.replace('{Author}', self.author)
f.write(fc)
f.close()
def init_fb_opf(self):
fc, f = rewrite_file(self.work_dir + 'OPS/fb.opf')
fc = fc.replace('{Title}', self.title)
fc = fc.replace('{Author}', self.author)
fc = fc.replace('{PushDate}', self.push_date)
fc = fc.replace('{Source}', self.source)
f.write(fc)
f.close()
def init_play_order(self):
with open(self.work_dir + 'OPS/fb.ncx', encoding='utf-8') as f:
content = f.read()
po_list = get_all_play_order(content)
self.play_order = max([int(po) for po in po_list])
def add_chapter(self, chapter_name, content, file_name=None):
if not file_name:
file_name = self.play_order
is_need_update_index = \
not os.path.exists(self.work_dir + 'OPS/{file_name}.html'.format(file_name=file_name))
fc, f = copy_file(self.template_dir + 'OPS/chapter.html',
self.work_dir + 'OPS/{file_name}.html'.format(file_name=file_name))
body_html = ''
p_content = ''
lines = content.split('\n')
for line in lines:
if self.enable_download_img and line.startswith('<img'):
src = get_src_from_text(line)
img_src = self.download_img(src)
p_content += '<img src="{img_src}" class="manga">'.format(img_src=img_src)
elif line.startswith('<br'):
body_html += '<p>{content}</p>\n'.format(content=p_content)
p_content = ''
else:
p_content += line
if len(p_content) > 0:
body_html += '<p>{content}</p>\n'.format(content=p_content)
fc = fc.replace('{Title}', chapter_name)
fc = fc.replace('<!-- title -->', '<h2>{title}</h2>'.format(title=chapter_name))
fc = fc.replace('{MainContent}', body_html)
f.write(fc)
f.close()
if is_need_update_index:
self.add_index(chapter_name, file_name)
def add_index(self, chapter_name, file_name):
nav_point_html = '''
<navPoint id="chapter{play_order}" playOrder="{play_order}">
<navLabel><text>{chapter_name}</text></navLabel>
<content src="{file_name}.html"/>
</navPoint>\n\n
<!--ANOTHER NAVPOINT-->\n
'''.format(play_order=self.play_order, file_name=file_name, chapter_name=chapter_name)
fc, f = rewrite_file(self.work_dir + 'OPS/fb.ncx')
f.write(fc.replace('<!--ANOTHER NAVPOINT-->', nav_point_html))
f.close()
item_html = """
<item id="chapter{play_order}" href="{file_name}.html" media-type="application/xhtml+xml"/>\n\n<!-- ANOTHER ITEM -->
""".format(play_order=self.play_order, file_name=file_name)
itemref_html = """
<itemref idref="chapter{play_order}" linear="yes"/>\n\n<!-- ANOTHER ITEMREF -->
""".format(play_order=self.play_order)
fc, f = rewrite_file(self.work_dir + 'OPS/fb.opf')
fc = fc.replace('<!-- ANOTHER ITEM -->', item_html)
fc = fc.replace('<!-- ANOTHER ITEMREF -->', itemref_html)
f.write(fc)
f.close()
self.play_order += 1
def download_img(self, img_url):
p = requests.get(img_url)
img_name, img_type = re.findall(r'(\w+)\.(jpg|png|gif|jpeg)', img_url)[0]
img_path = self.work_dir + 'OPS/images/' + img_name + '.' + img_type
with open(img_path, 'wb') as f:
f.write(p.content)
return 'images/' + img_name + '.' + img_type
def make_epub_file(self, file_name=None):
epub_name = file_name if file_name else '{author} - {title}'.format(author=self.author, title=self.title)
self.zip_dir_to_epub(self.work_dir, epub_name)