Current File : //usr/lib/calibre/calibre/ebooks/oeb/polish/create.py
#!/usr/bin/env python3
__license__ = 'GPL v3'
__copyright__ = '2013, Kovid Goyal <kovid at kovidgoyal.net>'
import sys, os
from lxml import etree
from calibre import prepare_string_for_xml, CurrentDir
from calibre.ptempfile import TemporaryDirectory
from calibre.ebooks.oeb.base import serialize
from calibre.ebooks.metadata import authors_to_string
from calibre.ebooks.metadata.opf2 import metadata_to_opf
from calibre.ebooks.oeb.polish.parsing import parse
from calibre.ebooks.oeb.polish.container import OPF_NAMESPACES, opf_to_azw3, Container
from calibre.ebooks.oeb.polish.utils import guess_type
from calibre.ebooks.oeb.polish.pretty import pretty_xml_tree, pretty_html_tree
from calibre.ebooks.oeb.polish.toc import TOC, create_ncx
from calibre.utils.localization import lang_as_iso639_1
from calibre.utils.logging import DevNull
from calibre.utils.zipfile import ZipFile, ZIP_STORED
from polyglot.builtins import as_bytes
valid_empty_formats = {'epub', 'txt', 'docx', 'azw3', 'md'}
def create_toc(mi, opf, html_name, lang):
uuid = ''
for u in opf.xpath('//*[@id="uuid_id"]'):
uuid = u.text
toc = TOC()
toc.add(_('Start'), html_name)
return create_ncx(toc, lambda x:x, mi.title, lang, uuid)
def create_book(mi, path, fmt='epub', opf_name='metadata.opf', html_name='start.xhtml', toc_name='toc.ncx'):
''' Create an empty book in the specified format at the specified location. '''
if fmt not in valid_empty_formats:
raise ValueError('Cannot create empty book in the %s format' % fmt)
if fmt == 'txt':
with open(path, 'wb') as f:
if not mi.is_null('title'):
f.write(as_bytes(mi.title))
return
if fmt == 'md':
with open(path, 'w', encoding='utf-8') as f:
if not mi.is_null('title'):
print('#', mi.title, file=f)
return
if fmt == 'docx':
from calibre.ebooks.conversion.plumber import Plumber
from calibre.ebooks.docx.writer.container import DOCX
from calibre.utils.logging import default_log
p = Plumber('a.docx', 'b.docx', default_log)
p.setup_options()
# Use the word default of one inch page margins
for x in 'left right top bottom'.split():
setattr(p.opts, 'margin_' + x, 72)
DOCX(p.opts, default_log).write(path, mi, create_empty_document=True)
return
path = os.path.abspath(path)
lang = 'und'
opf = metadata_to_opf(mi, as_string=False)
for l in opf.xpath('//*[local-name()="language"]'):
if l.text:
lang = l.text
break
lang = lang_as_iso639_1(lang) or lang
opfns = OPF_NAMESPACES['opf']
m = opf.makeelement('{%s}manifest' % opfns)
opf.insert(1, m)
i = m.makeelement('{%s}item' % opfns, href=html_name, id='start')
i.set('media-type', guess_type('a.xhtml'))
m.append(i)
i = m.makeelement('{%s}item' % opfns, href=toc_name, id='ncx')
i.set('media-type', guess_type(toc_name))
m.append(i)
s = opf.makeelement('{%s}spine' % opfns, toc="ncx")
opf.insert(2, s)
i = s.makeelement('{%s}itemref' % opfns, idref='start')
s.append(i)
CONTAINER = '''\
<?xml version="1.0"?>
<container version="1.0" xmlns="urn:oasis:names:tc:opendocument:xmlns:container">
<rootfiles>
<rootfile full-path="{}" media-type="application/oebps-package+xml"/>
</rootfiles>
</container>
'''.format(prepare_string_for_xml(opf_name, True)).encode('utf-8')
HTML = P('templates/new_book.html', data=True).decode('utf-8').replace(
'_LANGUAGE_', prepare_string_for_xml(lang, True)
).replace(
'_TITLE_', prepare_string_for_xml(mi.title)
).replace(
'_AUTHORS_', prepare_string_for_xml(authors_to_string(mi.authors))
).encode('utf-8')
h = parse(HTML)
pretty_html_tree(None, h)
HTML = serialize(h, 'text/html')
ncx = etree.tostring(create_toc(mi, opf, html_name, lang), encoding='utf-8', xml_declaration=True, pretty_print=True)
pretty_xml_tree(opf)
opf = etree.tostring(opf, encoding='utf-8', xml_declaration=True, pretty_print=True)
if fmt == 'azw3':
with TemporaryDirectory('create-azw3') as tdir, CurrentDir(tdir):
for name, data in ((opf_name, opf), (html_name, HTML), (toc_name, ncx)):
with open(name, 'wb') as f:
f.write(data)
c = Container(os.path.dirname(os.path.abspath(opf_name)), opf_name, DevNull())
opf_to_azw3(opf_name, path, c)
else:
with ZipFile(path, 'w', compression=ZIP_STORED) as zf:
zf.writestr('mimetype', b'application/epub+zip', compression=ZIP_STORED)
zf.writestr('META-INF/', b'', 0o755)
zf.writestr('META-INF/container.xml', CONTAINER)
zf.writestr(opf_name, opf)
zf.writestr(html_name, HTML)
zf.writestr(toc_name, ncx)
if __name__ == '__main__':
from calibre.ebooks.metadata.book.base import Metadata
mi = Metadata('Test book', authors=('Kovid Goyal',))
path = sys.argv[-1]
ext = path.rpartition('.')[-1].lower()
if ext not in valid_empty_formats:
print('Unsupported format:', ext)
raise SystemExit(1)
create_book(mi, path, fmt=ext)
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