121 lines
3.0 KiB
Python
121 lines
3.0 KiB
Python
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# This file is part of EbookLib.
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# Copyright (c) 2013 Aleksandar Erkalovic <aerkalov@gmail.com>
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#
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# EbookLib is free software: you can redistribute it and/or modify
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# it under the terms of the GNU Affero 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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# EbookLib 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 Affero General Public License for more details.
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#
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# You should have received a copy of the GNU Affero General Public License
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# along with EbookLib. If not, see <http://www.gnu.org/licenses/>.
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import io
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import mimetypes
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from lxml import etree
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mimetype_initialised = False
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def debug(obj):
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import pprint
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pp = pprint.PrettyPrinter(indent=4)
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pp.pprint(obj)
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def parse_string(s):
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try:
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tree = etree.parse(io.BytesIO(s.encode('utf-8')))
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except:
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tree = etree.parse(io.BytesIO(s))
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return tree
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def parse_html_string(s):
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from lxml import html
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utf8_parser = html.HTMLParser(encoding='utf-8')
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html_tree = html.document_fromstring(s, parser=utf8_parser)
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return html_tree
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def guess_type(extenstion):
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global mimetype_initialised
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if not mimetype_initialised:
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mimetypes.init()
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mimetypes.add_type('application/xhtml+xml', '.xhtml')
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mimetype_initialised = True
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return mimetypes.guess_type(extenstion)
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def create_pagebreak(pageref, label=None, html=True):
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from ebooklib.epub import NAMESPACES
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pageref_attributes = {
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'{%s}type' % NAMESPACES['EPUB']: 'pagebreak',
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'title': u'{}'.format(pageref),
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'id': u'{}'.format(pageref),
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}
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pageref_elem = etree.Element('span', pageref_attributes, nsmap={'epub': NAMESPACES['EPUB']})
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if label:
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pageref_elem.text = label
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if html:
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return etree.tostring(pageref_elem, encoding='unicode')
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return pageref_elem
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def get_headers(elem):
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for n in range(1, 7):
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headers = elem.xpath('./h{}'.format(n))
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if len(headers) > 0:
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text = headers[0].text_content().strip()
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if len(text) > 0:
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return text
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return None
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def get_pages(item):
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body = parse_html_string(item.get_body_content())
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pages = []
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for elem in body.iter():
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if 'epub:type' in elem.attrib:
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if elem.get('id') is not None:
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_text = None
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if elem.text is not None and elem.text.strip() != '':
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_text = elem.text.strip()
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if _text is None:
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_text = elem.get('aria-label')
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if _text is None:
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_text = get_headers(elem)
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pages.append((item.get_name(), elem.get('id'), _text or elem.get('id')))
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return pages
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def get_pages_for_items(items):
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pages_from_docs = [get_pages(item) for item in items]
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return [item for pages in pages_from_docs for item in pages]
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