Implement support for Amazon ebooks
This commit is contained in:
BasioMeusPuga
164
parsers/epub.py
164
parsers/epub.py
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#!/usr/bin/env python3
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# This file is a part of Lector, a Qt based ebook reader
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# Copyright (C) 2017 BasioMeusPuga
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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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# 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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# 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 os
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import re
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import zipfile
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import collections
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from urllib.parse import unquote
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import ebooklib.epub
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class ParseEPUB:
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def __init__(self, filename, temp_dir, file_md5):
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# TODO
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# Maybe also include book description
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self.filename = filename
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self.book = None
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self.temp_dir = temp_dir
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self.file_md5 = file_md5
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def read_book(self):
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try:
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self.book = ebooklib.epub.read_epub(self.filename)
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except (KeyError, AttributeError, FileNotFoundError):
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print('Cannot parse ' + self.filename)
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return
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def get_title(self):
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return self.book.title.strip()
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def get_author(self):
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try:
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return self.book.metadata['http://purl.org/dc/elements/1.1/']['creator'][0][0]
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except KeyError:
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return
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def get_year(self):
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try:
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return self.book.metadata['http://purl.org/dc/elements/1.1/']['date'][0][0][:4]
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except KeyError:
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return
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def get_cover_image(self):
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# Get cover image
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# This seems hack-ish, but that's never stopped me before
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image_path = None
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try:
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cover = self.book.metadata['http://www.idpf.org/2007/opf']['cover'][0][1]['content']
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cover_item = self.book.get_item_with_id(cover)
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if cover_item:
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return cover_item.get_content()
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except KeyError:
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pass
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# In case no cover_item is returned, we look for a cover in the guide
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for i in self.book.guide:
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try:
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if (i['title'].lower in ['cover', 'cover-image', 'coverimage'] or
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i['type'] == 'coverimagestandard'):
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image_path = i['href']
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break
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except KeyError:
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pass
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# If that fails, we find the first image referenced in the book
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if not image_path:
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for i in self.book.items:
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if i.media_type == 'application/xhtml+xml':
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_regex = re.search(r"src=\"(.*)\"\/", i.content.decode('utf-8'))
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if _regex:
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image_path = _regex[1]
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break
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if image_path:
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for i in self.book.get_items_of_type(ebooklib.ITEM_IMAGE):
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if os.path.basename(i.file_name) == os.path.basename(image_path):
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return i.get_content()
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# And if that too fails, we get the first image referenced in the file
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for i in self.book.items:
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if i.media_type == 'image/jpeg' or i.media_type == 'image/png':
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return i.get_content()
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def get_isbn(self):
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try:
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identifier = self.book.metadata['http://purl.org/dc/elements/1.1/']['identifier']
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for i in identifier:
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identifier_provider = i[1]['{http://www.idpf.org/2007/opf}scheme']
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if identifier_provider.lower() == 'isbn':
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isbn = i[0]
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return isbn
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except KeyError:
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return
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def get_tags(self):
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try:
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subject = self.book.metadata['http://purl.org/dc/elements/1.1/']['subject']
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tags = [i[0] for i in subject]
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return tags
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except KeyError:
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return
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def get_contents(self):
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extract_path = os.path.join(self.temp_dir, self.file_md5)
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zipfile.ZipFile(self.filename).extractall(extract_path)
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contents = collections.OrderedDict()
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def flatten_section(toc_element):
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output_list = []
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for i in toc_element:
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if isinstance(i, (tuple, list)):
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output_list.extend(flatten_section(i))
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else:
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output_list.append(i)
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return output_list
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for i in self.book.toc:
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if isinstance(i, (tuple, list)):
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flattened = flatten_section(i)
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for j in flattened:
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title = j.title
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href = unquote(j.href)
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try:
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content = self.book.get_item_with_href(href).get_content()
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contents[title] = content.decode()
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except AttributeError:
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pass
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else:
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title = i.title
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href = unquote(i.href)
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try:
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content = self.book.get_item_with_href(href).get_content()
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if content:
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contents[title] = content.decode()
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else:
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raise AttributeError
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except AttributeError:
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contents[title] = 'Parse Error'
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# Special settings that have to be returned with the file
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# Referenced in sorter.py
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file_settings = {
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'images_only': False}
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return contents, file_settings
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