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Epub.py
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from datetime import datetime
from shutil import copyfile
from instance import *
import urllib.request
import zipfile
import codecs
import time
import msg
import os
import re
image_get_retry = 10
image_download_display_delay = 1
last_image_dl_start_time = None
def str_mid(string: str, left: str, right: str, start=None, end=None):
pos1 = string.find(left, start, end)
if pos1 > -1:
pos2 = string.find(right, pos1 + len(left), end)
if pos2 > -1:
return string[pos1 + len(left): pos2]
return ''
def get_all_files(dir_path: str):
result = list()
for _name in os.listdir(dir_path):
if os.path.isdir(dir_path + '/' + _name):
result.extend(get_all_files(dir_path + '/' + _name))
else:
result.append(dir_path + '/' + _name)
return result
def text_to_html_element_escape(text: str):
return text.replace('&', '&').replace('<', '<').replace('>', '>')
def html_element_to_text_unescape(element: str):
return element.replace('&', '&').replace('<', '<').replace('>', '>')
def backup_copy_add_suffix_if_exists_add_index(file_path: str, suffix: str):
# fix_illegal_book_name_dir
backup_dir = os.path.join(Vars.cfg.data['backup_dir'], re.sub('^(.+)\\.\\s*$', '\\1．',
os.path.splitext(os.path.basename(file_path))[0]))
file_basename = os.path.splitext(os.path.basename(file_path))[0] + ' ' + suffix
file_ext = os.path.splitext(file_path)[1]
if not os.path.isdir(backup_dir):
os.makedirs(backup_dir)
if os.path.exists(file_path):
if os.path.exists(os.path.join(backup_dir, file_basename) + file_ext):
index = 1
while os.path.exists(os.path.join(backup_dir, file_basename) + ' ' + str(index) + file_ext):
index += 1
copyfile(file_path, os.path.join(backup_dir, file_basename) + ' ' + str(index) + file_ext)
else:
copyfile(file_path, os.path.join(backup_dir, file_basename) + file_ext)
else:
# 出現錯誤
print("error: file dose not exists: " + file_path)
def download_progress_reporthook(count, block_size, total_size):
# this prints the image downloading progress
# this is to show that the script is working
# the timer is "not thread" safe, but working as intended
# the timer is reset every time when a new download is triggered
# it will print the progress if it's taking too long
global last_image_dl_start_time
if count == 0:
last_image_dl_start_time = time.time()
return
duration = time.time() - last_image_dl_start_time
if duration < image_download_display_delay:
return
progress_size = int(count * block_size)
percent = int(progress_size * 100 / total_size)
print("\rDownloading Image... %d%%, %d KB" % (percent, progress_size / 1024), end='')
class EpubFile:
_filepath = ''
tempdir = ''
_content_opf = ''
_content_opf_manifest = ''
_content_opf_spine = ''
_chapter_format_manifest = ''
_image_format_manifest = ''
_chapter_format_spine = ''
_toc_ncx = ''
_toc_ncx_navMap = ''
_chapter_format_navMap = ''
_chapter_format = ''
def __init__(self, filepath: str, tempdir: str, book_id: str, book_title: str, book_author: str, use_old_epub=True):
self._filepath = filepath
self.tempdir = tempdir
if not os.path.isdir(tempdir):
os.makedirs(tempdir)
_template = zipfile.ZipFile(os.path.abspath(os.path.join(os.path.dirname(__file__), 'template.epub')))
self.cover_template = bytes(_template.read('OEBPS/Text/cover.xhtml')).decode()
self._content_opf = bytes(_template.read('OEBPS/content.opf')).decode()
self._chapter_format_manifest = str_mid(self._content_opf, '${chapter_format_manifest}={{{', '}}}')
self._image_format_manifest = str_mid(self._content_opf, '${image_format_manifest}={{{', '}}}')
self._chapter_format_spine = str_mid(self._content_opf, '${chapter_format_spine}={{{', '}}}')
self._toc_ncx = bytes(_template.read('OEBPS/toc.ncx')).decode()
self._chapter_format_navMap = str_mid(self._toc_ncx, '${chapter_format_navMap}={{{', '}}}')
self._chapter_format = bytes(_template.read('OEBPS/Text/${chapter_format}.xhtml')).decode()
if os.path.isfile(filepath) and use_old_epub:
try:
with zipfile.ZipFile(self._filepath, 'r', zipfile.ZIP_DEFLATED) as _file:
try:
self._content_opf = bytes(_file.read('OEBPS/content.opf')).decode()
self._toc_ncx = bytes(_file.read('OEBPS/toc.ncx')).decode()
_file.extractall(self.tempdir)
except (KeyError, NameError, IOError):
self._content_opf = bytes(_template.read('OEBPS/content.opf')).decode()
self._toc_ncx = bytes(_template.read('OEBPS/toc.ncx')).decode()
finally:
self._content_opf_manifest = str_mid(self._content_opf, '<manifest>', '</manifest>')
self._content_opf_spine = str_mid(self._content_opf, '<spine toc="ncx">', '</spine>')
self._toc_ncx_navMap = str_mid(self._toc_ncx, '<navMap>', '</navMap>')
_init = False
except zipfile.BadZipFile:
_init = True
else:
_init = True
if _init:
for _name in _template.namelist():
if _name.find('$') == -1:
if not os.path.exists(tempdir + '/' + _name):
_template.extract(_name, self.tempdir)
self._content_opf = re.sub(r'\${.*?}={{{[\S\s]*?}}}[\r\n]*', '', self._content_opf)
self._toc_ncx = re.sub(r'\${.*?}={{{[\S\s]*?}}}[\r\n]*', '', self._toc_ncx)
self._content_opf_manifest = str_mid(self._content_opf, '<manifest>', '</manifest>')
self._content_opf_spine = str_mid(self._content_opf, '<spine toc="ncx">', '</spine>')
self._toc_ncx_navMap = str_mid(self._toc_ncx, '<navMap>', '</navMap>')
self._content_opf = self._content_opf.replace('${book_id}', book_id)
self._content_opf = self._content_opf.replace('${book_title}', text_to_html_element_escape(book_title))
self._content_opf = self._content_opf.replace('${book_author}', text_to_html_element_escape(book_author))
self._toc_ncx = self._toc_ncx.replace('${book_id}', book_id)
self._toc_ncx = self._toc_ncx.replace('${book_title}', text_to_html_element_escape(book_title))
self._toc_ncx = self._toc_ncx.replace('${book_author}', text_to_html_element_escape(book_author))
_template.close()
def _add_manifest_chapter(self, chapter_id: str):
if self._content_opf_manifest.find('id="' + chapter_id + '.xhtml"') == -1:
_before = self._content_opf_manifest
self._content_opf_manifest += self._chapter_format_manifest.replace('${chapter_id}', chapter_id) + '\r\n'
self._content_opf = self._content_opf.replace(
'<manifest>' + _before + '</manifest>',
'<manifest>' + self._content_opf_manifest + '</manifest>', 1)
def _add_manifest_image(self, filename: str):
if self._content_opf_manifest.find('id="' + filename + '"') == -1:
_before = self._content_opf_manifest
if filename.endswith('.png'):
_media_type = 'image/png'
else:
_media_type = 'image/jpeg'
self._content_opf_manifest += self._image_format_manifest.replace('${filename}', filename) \
.replace('${media_type}', _media_type) + '\r\n'
self._content_opf = self._content_opf.replace(
'<manifest>' + _before + '</manifest>',
'<manifest>' + self._content_opf_manifest + '</manifest>', 1)
def _add_spine(self, chapter_id: str):
# noinspection SpellCheckingInspection
if self._content_opf_spine.find('idref="' + chapter_id + '.xhtml"') == -1:
_before = self._content_opf_spine
self._content_opf_spine += self._chapter_format_spine.replace('${chapter_id}', chapter_id) + '\r\n'
self._content_opf = self._content_opf.replace(
'<spine toc="ncx">' + _before + '</spine>',
'<spine toc="ncx">' + self._content_opf_spine + '</spine>', 1)
def add_nav_map(self, chapter_index: str, chapter_id: str, chapter_title: str):
if self._toc_ncx_navMap.find('id="' + chapter_id) == -1:
_before = self._toc_ncx_navMap
self._toc_ncx_navMap += self._chapter_format_navMap.replace('${chapter_id}', chapter_id) \
.replace('${chapter_index}', chapter_index) \
.replace('${chapter_title}', chapter_title) + '\r\n'
self._toc_ncx = self._toc_ncx.replace(
'<navMap>' + _before + '</navMap>',
'<navMap>' + self._toc_ncx_navMap + '</navMap>', 1)
def _save(self):
with codecs.open(self.tempdir + '/OEBPS/content.opf', 'w', 'utf-8') as _file:
_file.write(self._content_opf)
with codecs.open(self.tempdir + '/OEBPS/toc.ncx', 'w', 'utf-8') as _file:
_file.write(self._toc_ncx)
def set_cover(self, url: str):
image_path = self.tempdir + '/OEBPS/Images/' + url[url.rfind('/') + 1:]
if os.path.exists(image_path):
if os.path.getsize(image_path) != 0:
return
for retry in range(image_get_retry):
try:
urllib.request.urlretrieve(url, image_path, download_progress_reporthook)
copyfile(image_path, self.tempdir + '/OEBPS/Images/cover.jpg')
return
except OSError as e:
if retry != image_get_retry - 1:
print(msg.m('cover_dl_rt') + str(retry + 1) + ' / ' + str(image_get_retry) + ', ' + str(e) + '\n' +
url)
time.sleep(0.5 * retry)
else:
print(msg.m('cover_dl_f') + str(e) + '\n' + url)
with open(image_path, 'wb'):
pass
def export(self):
self._save()
with zipfile.ZipFile(self._filepath, 'w', zipfile.ZIP_DEFLATED) as _file:
_result = get_all_files(self.tempdir)
counter = 0
print()
for _name in _result:
_file.write(_name, _name.replace(self.tempdir + '/', ''))
counter += 1
print('\r' + str(counter) + ' / ' + str(len(_result)), end='')
print()
def add_image(self, filename: str, url: str):
image_path = self.tempdir + '/OEBPS/Images/' + filename
if os.path.exists(image_path):
if os.path.getsize(image_path) != 0:
return
for retry in range(image_get_retry):
try:
urllib.request.urlretrieve(url, image_path, download_progress_reporthook)
return
except OSError as e:
if retry != image_get_retry - 1:
print(msg.m('image_dl_rt') + str(retry + 1) + ' / ' + str(image_get_retry) + ', ' + str(e) + '\n' +
url)
time.sleep(0.5 * retry)
else:
print(msg.m('image_dl_f') + str(e) + '\n' + url)
with open(image_path, 'wb'):
pass
def add_chapter(self, chapter_id: str, division_name: str, chapter_title: str, chapter_content: str,
division_index, chapter_order):
f_name = division_index.rjust(4, "0") + '-' + str(chapter_order).rjust(6, "0") + '-' + chapter_id
_data = self._chapter_format.replace(
'<title>${chapter_title}</title>', '<title>' + text_to_html_element_escape(division_name) + ' : ' +
text_to_html_element_escape(chapter_title) + '</title>') \
.replace('${chapter_content}', '<h3>' + text_to_html_element_escape(chapter_title) + '</h3>\r\n' +
chapter_content)
# 改動插圖連結辨識方式，以適應另一種連結的結構
for _img in re.findall(r'<img .*src="http.*?>', _data):
_img = _img.replace('>', ' />')
_src = str_mid(_img, 'src="', '"')
if _src.rfind('/') == -1:
continue
filename = _src[_src.rfind('/') + 1:]
self.add_image(filename, _src)
_data = _data.replace(_src, '../Images/' + filename)
_data = re.sub(
f"(<img *src=[\"\']\\.\\./Images/{filename}[\"\'] *alt=[\"\'][^\"^\']+[\"\'] *)(?!( ))(?!(/>))[/>]?",
"\\1/>", _data)
_data = re.sub(
f"(<img *alt=[\"\'][^\"^\']+[\"\'] *src=[\"\']\\.\\./Images/{filename}[\"\'] *)(?!( ))(?!(/>))[/>]?",
"\\1/>", _data)
with codecs.open(self.tempdir + '/OEBPS/Text/' + f_name + '.xhtml', 'w', 'utf-8') as _file:
_file.write(_data)
def download_book_write_chapter(self, division_chapter_list):
order_count = 2
with codecs.open(os.path.splitext(self._filepath)[0] + ".txt", 'w', 'utf-8') as _file:
with codecs.open(self.tempdir + '/OEBPS/Text/cover.xhtml', 'r', 'utf-8') as _cover_xhtml:
cover = str(_cover_xhtml.read())
cover = str_mid(cover, '<h1>', '</body>')
cover = cover.replace('</h1>', '').replace('<h2>', '').replace('</h2>', '').replace('<h3>', ''). \
replace('</h3>', '').replace('<p>', '').replace('</p>', '')
cover = html_element_to_text_unescape(cover)
_file.write(cover + '\r\n')
for filename in sorted(os.listdir(self.tempdir + '/OEBPS/Text/')):
if filename.find('$') > -1 or filename == 'cover.xhtml':
continue
f_name = os.path.splitext(filename)[0]
self._add_manifest_chapter(f_name)
self._add_spine(f_name)
with codecs.open(self.tempdir + '/OEBPS/Text/' + filename, 'r', 'utf-8') as _file_xhtml:
_data_chapter = re.sub(r'<h3>.*?</h3>', '', _file_xhtml.read())
division_and_chapter_file = str_mid(_data_chapter, "<title>", "</title>")
if division_and_chapter_file == '':
division_name = ''
chapter_title = ''
for division_list_name in division_chapter_list:
for chapter in division_chapter_list[division_list_name]:
if chapter['chapter_id'] == os.path.splitext(filename)[0].split("-")[2]:
division_name = division_list_name
chapter_title = chapter['chapter_title']
break
else:
continue
break
if division_name == '' and chapter_title == '':
division_and_chapter_file = text_to_html_element_escape(filename)
else:
division_and_chapter_file = text_to_html_element_escape(division_name + ' : ' + chapter_title)
self.add_nav_map(str(order_count), f_name, division_and_chapter_file)
for _a in re.findall(r'<a href=.*?>章节链接</a>', _data_chapter):
_data_chapter = _data_chapter.replace(_a, '章节链接:' + str_mid(_a, '<a href="', '"'))
for _img in re.findall(r'<img src=.*?>', _data_chapter):
_data_chapter = _data_chapter.replace(_img, '图片:"' + str_mid(_img, "alt='", "'") + '",' + '位置:"'
+ str_mid(_img, '<img src="', '"').replace('../', '') + '"')
_data_chapter = re.sub(r'</?[\S\s]*?>', '', _data_chapter)
_data_chapter = re.sub(r'[\r\n]+', '\r\n\r\n', _data_chapter)
_data_chapter = html_element_to_text_unescape(_data_chapter)
_file.write(_data_chapter)
order_count += 1
for filename in sorted(os.listdir(self.tempdir + '/OEBPS/Images/')):
self._add_manifest_image(filename)
self.export()
self.make_backup()
def make_backup(self):
if Vars.cfg.data['do_backup']:
date = str(datetime.now().date())
backup_copy_add_suffix_if_exists_add_index(self._filepath, date)
backup_copy_add_suffix_if_exists_add_index(os.path.splitext(self._filepath)[0] + '.txt', date)
def make_cover_text(self, book_name: str, author_name: str, book_description: str, update_time: str, book_id: str):
text = '<h1>' + text_to_html_element_escape(book_name) + '</h1>\r\n<h2>作者: ' + \
text_to_html_element_escape(author_name) + '</h2>\r\n<h3>更新時間: ' + update_time + \
'</h3>\r\n<h3>Book ID: ' + book_id + '</h3>\r\n<h3>簡介:</h3>\r\n<p>' + \
re.sub('\r\n', '</p>\r\n<p>', text_to_html_element_escape(book_description) + '</p>')
text = re.sub('</body>\r\n</html>', text + '\r\n</body>\r\n</html>', self.cover_template)
with codecs.open(self.tempdir + '/OEBPS/Text/cover.xhtml', 'w', 'utf-8') as _file:
_file.write(text)