def __call__(self, container):
import uuid
opf = container.opf
uid = str(uuid.uuid4())
opf.set('unique-identifier', uid)
m = container.opf_xpath('/opf:package/opf:metadata')
if not m:
m = [
container.opf.makeelement(OPF('metadata'),
nsmap={'dc': DC11_NS})
]
container.insert_into_xml(container.opf, m[0], 0)
m = m[0]
dc = m.makeelement(DC('identifier'), id=uid, nsmap={'opf': OPF2_NS})
dc.set(OPF('scheme'), 'uuid')
dc.text = uid
container.insert_into_xml(m, dc)
container.dirty(container.opf_name)
return True
def opf_get_or_create(self, name):
ans = self.opf_xpath('//opf:' + name)
if ans:
return ans[0]
self.dirty(self.opf_name)
package = self.opf_xpath('//opf:package')[0]
item = package.makeelement(OPF(name))
item.tail = '\n'
package.append(item)
return item
def create_cover_page(self, input_fmt):
templ = '''
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en">
<head><style>
html, body, img { height: 100vh; display: block; margin: 0; padding: 0; border-width: 0; }
img {
width: 100%%; height: 100%%;
object-fit: contain;
margin-left: auto; margin-right: auto;
max-width: 100vw; max-height: 100vh;
top: 50vh; transform: translateY(-50%%);
position: relative;
}
body.cover-fill img { object-fit: fill; }
</style></head><body><img src="%s"/></body></html>
'''
def generic_cover():
if self.book_metadata is not None:
from calibre.ebooks.covers import create_cover
mi = self.book_metadata
return create_cover(mi.title, mi.authors, mi.series,
mi.series_index)
return BLANK_JPEG
if input_fmt == 'epub':
def cover_path(action, data):
if action == 'write_image':
data.write(generic_cover())
raster_cover_name, titlepage_name = set_epub_cover(
self,
cover_path, (lambda *a: None),
options={'template': templ})
else:
raster_cover_name = find_cover_image(self, strict=True)
if raster_cover_name is None:
item = self.generate_item(name='cover.jpeg', id_prefix='cover')
raster_cover_name = self.href_to_name(item.get('href'),
self.opf_name)
with self.open(raster_cover_name, 'wb') as dest:
dest.write(generic_cover())
item = self.generate_item(name='titlepage.html',
id_prefix='titlepage')
titlepage_name = self.href_to_name(item.get('href'), self.opf_name)
raw = templ % prepare_string_for_xml(
self.name_to_href(raster_cover_name, titlepage_name), True)
with self.open(titlepage_name, 'wb') as f:
f.write(raw.encode('utf-8'))
spine = self.opf_xpath('//opf:spine')[0]
ref = spine.makeelement(OPF('itemref'), idref=item.get('id'))
self.insert_into_xml(spine, ref, index=0)
self.dirty(self.opf_name)
return raster_cover_name, titlepage_name
def mark_as_cover_azw3(container, name):
href = container.name_to_href(name, container.opf_name)
found = False
for item in container.opf_xpath('//opf:guide/opf:reference[@href and contains(@type, "cover")]'):
item.set('href', href)
found = True
if not found:
for guide in container.opf_xpath('//opf:guide'):
container.insert_into_xml(guide, guide.makeelement(
OPF('reference'), href=href, type='cover'))
container.dirty(container.opf_name)
def set_series(root, prefixes, refines, series, series_index):
for meta in XPath('./opf:metadata/opf:meta[@name="calibre:series" or @name="calibre:series_index"]')(root):
remove_element(meta, refines)
for meta in XPath('./opf:metadata/opf:meta[@property="belongs-to-collection"]')(root):
remove_element(meta, refines)
m = XPath('./opf:metadata')(root)[0]
if series:
d = m.makeelement(OPF('meta'), attrib={'property':'belongs-to-collection'})
d.text = series
m.append(d)
set_refines(d, refines, refdef('collection-type', 'series'), refdef('group-position', '%.2g' % series_index))
def author(item, props, val):
aus = None
file_as = props.get('file-as')
if file_as:
aus = file_as[0][-1]
else:
aus = item.get(OPF('file-as')) or None
seq = 0
ds = props.get('display-seq')
with suppress(Exception):
seq = int(ds[0][-1])
return Author(normalize_whitespace(val), normalize_whitespace(aus), seq)
def create_timestamp(root, prefixes, m, val):
if not is_date_undefined(val):
ensure_prefix(root, prefixes, 'calibre', CALIBRE_PREFIX)
ensure_prefix(root, prefixes, 'dcterms')
val = w3cdtf(val)
d = m.makeelement(OPF('meta'),
attrib={
'property': 'calibre:timestamp',
'scheme': 'dcterms:W3CDTF'
})
d.text = val
m.append(d)
def convert_metadata(self, oeb):
from lxml import etree
from calibre.ebooks.oeb.base import OPF, OPF2_NS
from calibre.ebooks.metadata.opf2 import OPF as ReadOPF
from io import BytesIO
package = etree.Element(OPF('package'),
attrib={'version': '2.0'},
nsmap={None: OPF2_NS})
oeb.metadata.to_opf2(package)
self.mi = ReadOPF(BytesIO(etree.tostring(package, encoding='utf-8')),
populate_spine=False,
try_to_guess_cover=False).to_book_metadata()
def set_refines(elem, existing_refines, *new_refines):
eid = ensure_id(elem)
remove_refines(elem, existing_refines)
for ref in reversed(new_refines):
prop, val, scheme = ref
r = elem.makeelement(OPF('meta'))
r.set('refines', '#' + eid), r.set('property', prop)
r.text = val.strip()
if scheme:
r.set('scheme', scheme)
p = elem.getparent()
p.insert(p.index(elem) + 1, r)
def __call__(self, container):
from calibre.ebooks.oeb.base import OPF
rmap = {v: k for k, v in container.manifest_id_map.iteritems()}
if self.name in rmap:
manifest_id = rmap[self.name]
else:
manifest_id = container.add_name_to_manifest(self.name)
spine = container.opf_xpath('//opf:spine')[0]
si = spine.makeelement(OPF('itemref'), idref=manifest_id)
container.insert_into_xml(spine, si)
container.dirty(container.opf_name)
return True
def set_authors(root, prefixes, refines, authors):
ensure_prefix(root, prefixes, 'marc')
for item in XPath('./opf:metadata/dc:creator')(root):
props = properties_for_id_with_scheme(item.get('id'), prefixes, refines)
opf_role = item.get(OPF('role'))
if (is_relators_role(props, 'aut')) or (opf_role and opf_role.lower() != 'aut'):
continue
remove_element(item, refines)
metadata = XPath('./opf:metadata')(root)[0]
for author in authors:
a = metadata.makeelement(DC('creator'))
aid = ensure_id(a)
a.text = author.name
metadata.append(a)
m = metadata.makeelement(OPF('meta'), attrib={'refines':'#'+aid, 'property':'role', 'scheme':'marc:relators'})
m.text = 'aut'
metadata.append(m)
if author.sort:
m = metadata.makeelement(OPF('meta'), attrib={'refines':'#'+aid, 'property':'file-as'})
m.text = author.sort
metadata.append(m)
def convert(self, oeb_book, output_path, input_plugin, opts, log):
from calibre.gui2 import must_use_qt, load_builtin_fonts
from calibre.ebooks.oeb.transforms.split import Split
# Turn off hinting in WebKit (requires a patched build of QtWebKit)
os.environ['CALIBRE_WEBKIT_NO_HINTING'] = '1'
self.filtered_font_warnings = set()
self.stored_page_margins = getattr(opts, '_stored_page_margins', {})
try:
# split on page breaks, as the JS code to convert page breaks to
# column breaks will not work because of QWebSettings.LocalContentCanAccessFileUrls
Split()(oeb_book, opts)
must_use_qt()
load_builtin_fonts()
self.oeb = oeb_book
self.input_plugin, self.opts, self.log = input_plugin, opts, log
self.output_path = output_path
from calibre.ebooks.oeb.base import OPF, OPF2_NS
from lxml import etree
from io import BytesIO
package = etree.Element(OPF('package'),
attrib={
'version': '2.0',
'unique-identifier': 'dummy'
},
nsmap={None: OPF2_NS})
from calibre.ebooks.metadata.opf2 import OPF
self.oeb.metadata.to_opf2(package)
self.metadata = OPF(BytesIO(
etree.tostring(package))).to_book_metadata()
self.cover_data = None
if input_plugin.is_image_collection:
log.debug('Converting input as an image collection...')
self.convert_images(input_plugin.get_images())
else:
log.debug('Converting input as a text based book...')
self.convert_text(oeb_book)
finally:
os.environ.pop('CALIBRE_WEBKIT_NO_HINTING', None)
def mark_as_cover_epub(container, name):
mmap = {v: k for k, v in iteritems(container.manifest_id_map)}
if name not in mmap:
raise ValueError('Cannot mark %s as cover as it is not in manifest' %
name)
mid = mmap[name]
ver = container.opf_version_parsed
# Remove all entries from the opf that identify a raster image as cover
for meta in container.opf_xpath('//opf:meta[@name="cover" and @content]'):
container.remove_from_xml(meta)
for ref in container.opf_xpath(
'//opf:guide/opf:reference[@href and @type]'):
if ref.get('type').lower() not in COVER_TYPES:
continue
rname = container.href_to_name(ref.get('href'), container.opf_name)
mt = container.mime_map.get(rname, None)
if is_raster_image(mt):
container.remove_from_xml(ref)
if ver.major < 3:
# Add reference to image in <metadata>
for metadata in container.opf_xpath('//opf:metadata'):
m = metadata.makeelement(OPF('meta'), name='cover', content=mid)
container.insert_into_xml(metadata, m)
# If no entry for cover exists in guide, insert one that points to this
# image
if not container.opf_xpath('//opf:guide/opf:reference[@type="cover"]'):
for guide in get_guides(container):
container.insert_into_xml(
guide,
guide.makeelement(OPF('reference'),
type='cover',
href=container.name_to_href(
name, container.opf_name)))
else:
container.apply_unique_properties(name, 'cover-image')
container.dirty(container.opf_name)
def add_file(self, name, data, media_type=None):
''' Add a file to this container. Entries for the file are
automatically created in the OPF manifest and spine
(if the file is a text document) '''
if self.has_name(name):
raise ValueError('A file with the name %s already exists' % name)
if '..' in name:
raise ValueError('Names are not allowed to have .. in them')
href = self.name_to_href(name, self.opf_name)
all_hrefs = {x.get('href') for x in self.opf_xpath('//opf:manifest/opf:item[@href]')}
if href in all_hrefs:
raise ValueError('An item with the href %s already exists in the manifest' % href)
path = self.name_to_abspath(name)
base = os.path.dirname(path)
if not os.path.exists(base):
os.makedirs(base)
with open(path, 'wb') as f:
f.write(data)
mt = media_type or self.guess_type(name)
self.name_path_map[name] = path
self.mime_map[name] = mt
if name in self.names_that_need_not_be_manifested:
return
all_ids = {x.get('id') for x in self.opf_xpath('//*[@id]')}
c = 0
item_id = 'id'
while item_id in all_ids:
c += 1
item_id = 'id' + '%d'%c
manifest = self.opf_xpath('//opf:manifest')[0]
item = manifest.makeelement(OPF('item'),
id=item_id, href=href)
item.set('media-type', mt)
self.insert_into_xml(manifest, item)
self.dirty(self.opf_name)
if mt in OEB_DOCS:
spine = self.opf_xpath('//opf:spine')[0]
si = manifest.makeelement(OPF('itemref'), idref=item_id)
self.insert_into_xml(spine, si)
def writer(root, prefixes, refines, val):
if remove2:
for meta in XPath('./opf:metadata/opf:meta[@name="calibre:%s"]' % name)(root):
remove_element(meta, refines)
for meta in XPath('./opf:metadata/opf:meta[@property]')(root):
prop = expand_prefix(meta.get('property'), prefixes)
if prop.lower() == pq:
remove_element(meta, refines)
if val:
ensure_prefix(root, prefixes, 'calibre', CALIBRE_PREFIX)
m = XPath('./opf:metadata')(root)[0]
d = m.makeelement(OPF('meta'), attrib={'property':'calibre:%s' % name})
d.text = serialize(val)
m.append(d)
def read_book_producers(root, prefixes, refines):
ans = []
for item in XPath('./opf:metadata/dc:contributor')(root):
val = (item.text or '').strip()
if val:
props = properties_for_id_with_scheme(item.get('id'), prefixes, refines)
role = props.get('role')
opf_role = item.get(OPF('role'))
if role:
if is_relators_role(props, 'bkp'):
ans.append(normalize_whitespace(val))
elif opf_role and opf_role.lower() == 'bkp':
ans.append(normalize_whitespace(val))
return ans
def set_rating(root, prefixes, refines, val):
pq = '%s:rating' % CALIBRE_PREFIX
for meta in XPath('./opf:metadata/opf:meta[@name="calibre:rating"]')(root):
remove_element(meta, refines)
for meta in XPath('./opf:metadata/opf:meta[@property]')(root):
prop = expand_prefix(meta.get('property'), prefixes)
if prop.lower() == pq:
remove_element(meta, refines)
if val:
ensure_prefix(root, prefixes, 'calibre', CALIBRE_PREFIX)
m = XPath('./opf:metadata')(root)[0]
d = m.makeelement(OPF('meta'), attrib={'property':'calibre:rating'})
d.text = '%.2g' % val
m.append(d)
def set_timestamp(root, prefixes, refines, val):
ensure_prefix(root, prefixes, 'calibre', CALIBRE_PREFIX)
ensure_prefix(root, prefixes, 'dcterms')
pq = '%s:timestamp' % CALIBRE_PREFIX
for meta in XPath('./opf:metadata/opf:meta')(root):
prop = expand_prefix(meta.get('property'), prefixes)
if prop.lower() == pq or meta.get('name') == 'calibre:timestamp':
remove_element(meta, refines)
if not is_date_undefined(val):
val = isoformat(val)
m = XPath('./opf:metadata')(root)[0]
d = m.makeelement(OPF('meta'), attrib={'property':'calibre:timestamp', 'scheme':'dcterms:W3CDTF'})
d.text = val
m.append(d)
def set_book_producers(root, prefixes, refines, producers):
for item in XPath('./opf:metadata/dc:contributor')(root):
props = properties_for_id_with_scheme(item.get('id'), prefixes,
refines)
opf_role = item.get(OPF('role'))
if (opf_role and opf_role.lower() != 'bkp') or (
props.get('role') and not is_relators_role(props, 'bkp')):
continue
remove_element(item, refines)
metadata = XPath('./opf:metadata')(root)[0]
for bkp in producers:
a = metadata.makeelement(DC('contributor'))
aid = ensure_id(a)
a.text = bkp
metadata.append(a)
m = metadata.makeelement(OPF('meta'),
attrib={
'refines': '#' + aid,
'property': 'role',
'scheme': 'marc:relators'
})
m.text = 'bkp'
metadata.append(m)
def add_name_to_manifest(self, name):
all_ids = {x.get('id') for x in self.opf_xpath('//*[@id]')}
c = 0
item_id = 'id'
while item_id in all_ids:
c += 1
item_id = 'id' + '%d' % c
manifest = self.opf_xpath('//opf:manifest')[0]
href = self.name_to_href(name, self.opf_name)
item = manifest.makeelement(OPF('item'), id=item_id, href=href)
item.set('media-type', self.mime_map[name])
self.insert_into_xml(manifest, item)
self.dirty(self.opf_name)
return item_id
def convert(self, oeb_book, output_path, input_plugin, opts, log):
self.stored_page_margins = getattr(opts, '_stored_page_margins', {})
self.oeb = oeb_book
self.input_plugin, self.opts, self.log = input_plugin, opts, log
self.output_path = output_path
from calibre.ebooks.oeb.base import OPF, OPF2_NS
from lxml import etree
from io import BytesIO
package = etree.Element(OPF('package'),
attrib={'version': '2.0', 'unique-identifier': 'dummy'},
nsmap={None: OPF2_NS})
from calibre.ebooks.metadata.opf2 import OPF
self.oeb.metadata.to_opf2(package)
self.metadata = OPF(BytesIO(etree.tostring(package))).to_book_metadata()
self.cover_data = None
if input_plugin.is_image_collection:
log.debug('Converting input as an image collection...')
self.convert_images(input_plugin.get_images())
else:
log.debug('Converting input as a text based book...')
self.convert_text(oeb_book)
def set_last_modified(root, prefixes, refines, val=None):
pq = '%s:modified' % reserved_prefixes['dcterms']
val = w3cdtf(val or utcnow())
for meta in XPath('./opf:metadata/opf:meta[@property]')(root):
prop = expand_prefix(meta.get('property'), prefixes)
if prop.lower() == pq:
iid = meta.get('id')
if not iid or not refines[iid]:
break
else:
ensure_prefix(root, prefixes, 'dcterms')
m = XPath('./opf:metadata')(root)[0]
meta = m.makeelement(OPF('meta'), attrib={'property':'dcterms:modified', 'scheme':'dcterms:W3CDTF'})
m.append(meta)
meta.text = val
def fix_opf(self, container):
spine_names = {n for n, l in container.spine_names}
spine = container.opf_xpath('//opf:spine')[0]
rmap = {v: k for k, v in iteritems(container.manifest_id_map)}
# Add unreferenced text files to the spine
for name, mt in iteritems(container.mime_map):
if mt in OEB_DOCS and name not in spine_names:
spine_names.add(name)
container.insert_into_xml(
spine, spine.makeelement(OPF('itemref'), idref=rmap[name]))
# Remove duplicate entries from spine
seen = set()
for item, name, linear in container.spine_iter:
if name in seen:
container.remove_from_xml(item)
seen.add(name)
# Remove the <guide> which is not needed in EPUB 3
for guide in container.opf_xpath('//*[local-name()="guide"]'):
guide.getparent().remove(guide)
# Ensure that the cover-image property is set
cover_id = rmap['_static/' + self.config.epub_cover[0]]
for item in container.opf_xpath(
'//opf:item[@id="{}"]'.format(cover_id)):
item.set('properties', 'cover-image')
for item in container.opf_xpath(
'//opf:item[@href="epub-cover.xhtml"]'):
item.set('properties', 'svg calibre:title-page')
for item in container.opf_xpath('//opf:package'):
prefix = item.get('prefix') or ''
if prefix:
prefix += ' '
item.set('prefix', prefix + 'calibre: https://calibre-ebook.com')
# Remove any <meta cover> tag as it is not needed in epub 3
for meta in container.opf_xpath('//opf:meta[@name="cover"]'):
meta.getparent().remove(meta)
# Remove unreferenced files
for error in check_links(container):
if error.__class__ is UnreferencedResource:
container.remove_item(error.name)
# Pretty print the OPF
pretty_opf(container.parsed(container.opf_name))
container.dirty(container.opf_name)
def mark_as_titlepage(container, name, move_to_start=True):
if move_to_start:
for item, q, linear in container.spine_iter:
if name == q:
break
if not linear:
item.set('linear', 'yes')
if item.getparent().index(item) > 0:
container.insert_into_xml(item.getparent(), item, 0)
for ref in container.opf_xpath('//opf:guide/opf:reference[@type="cover"]'):
ref.getparent().remove(ref)
for guide in get_guides(container):
container.insert_into_xml(guide, guide.makeelement(
OPF('reference'), type='cover', href=container.name_to_href(name, container.opf_name)))
container.dirty(container.opf_name)
def read_authors(root, prefixes, refines):
roled_authors, unroled_authors = [], []
editors_map = {}
def author(item, props, val):
aus = None
file_as = props.get('file-as')
if file_as:
aus = file_as[0][-1]
else:
aus = item.get(OPF('file-as')) or None
seq = 0
ds = props.get('display-seq')
with suppress(Exception):
seq = int(ds[0][-1])
return Author(normalize_whitespace(val), normalize_whitespace(aus),
seq)
for item in XPath('./opf:metadata/dc:creator')(root):
val = (item.text or '').strip()
if val:
props = properties_for_id_with_scheme(item.get('id'), prefixes,
refines)
role = props.get('role')
opf_role = item.get(OPF('role'))
if role:
if is_relators_role(props, 'aut'):
roled_authors.append(author(item, props, val))
if is_relators_role(props, 'edt'):
# See https://bugs.launchpad.net/calibre/+bug/1950579
a = author(item, props, val)
editors_map[a.name] = a
elif opf_role:
if opf_role.lower() == 'aut':
roled_authors.append(author(item, props, val))
else:
unroled_authors.append(author(item, props, val))
if roled_authors or unroled_authors:
ans = uniq(roled_authors or unroled_authors)
else:
ans = uniq(editors_map.values())
ans.sort(key=attrgetter('seq'))
return ans
def set_azw3_cover(container, cover_path, report):
name = None
found = True
for gi in container.opf_xpath('//opf:guide/opf:reference[@href and contains(@type, "cover")]'):
href = gi.get('href')
name = container.href_to_name(href, container.opf_name)
container.remove_from_xml(gi)
if name is None or not container.has_name(name):
item = container.generate_item(name='cover.jpeg', id_prefix='cover')
name = container.href_to_name(item.get('href'), container.opf_name)
found = False
href = container.name_to_href(name, container.opf_name)
guide = container.opf_xpath('//opf:guide')[0]
container.insert_into_xml(guide, guide.makeelement(
OPF('reference'), href=href, type='cover'))
with open(cover_path, 'rb') as src, container.open(name, 'wb') as dest:
shutil.copyfileobj(src, dest)
container.dirty(container.opf_name)
report('Cover updated' if found else 'Cover inserted')
def convert_text(self, oeb_book):
from calibre.ebooks.metadata.opf2 import OPF
from calibre.ebooks.pdf.render.from_html import PDFWriter
self.log.debug('Serializing oeb input to disk for processing...')
self.get_cover_data()
self.process_fonts()
with TemporaryDirectory('_pdf_out') as oeb_dir:
from calibre.customize.ui import plugin_for_output_format
oeb_output = plugin_for_output_format('oeb')
oeb_output.convert(oeb_book, oeb_dir, self.input_plugin, self.opts, self.log)
opfpath = glob.glob(os.path.join(oeb_dir, '*.opf'))[0]
opf = OPF(opfpath, os.path.dirname(opfpath))
self.write(PDFWriter, [s.path for s in opf.spine], getattr(opf,
'toc', None))
def writer(root, prefixes, refines, ival=None):
uid = root.get('unique-identifier')
package_identifier = None
for ident in XPath('./opf:metadata/dc:identifier')(root):
is_package_id = uid is not None and uid == ident.get('id')
if is_package_id:
package_identifier = ident
val = (ident.text or '').strip()
if (val.startswith(name + ':') or ident.get(OPF('scheme')) == name) and not is_package_id:
remove_element(ident, refines)
metadata = XPath('./opf:metadata')(root)[0]
if ival:
ident = metadata.makeelement(DC('identifier'))
ident.text = '%s:%s' % (name, ival)
if package_identifier is None:
metadata.append(ident)
else:
p = package_identifier.getparent()
p.insert(p.index(package_identifier), ident)
def generate_item(self, name, id_prefix=None, media_type=None):
'''Add an item to the manifest with href derived from the given
name. Ensures uniqueness of href and id automatically. Returns
generated item.'''
id_prefix = id_prefix or 'id'
media_type = media_type or guess_type(name)
href = self.name_to_href(name, self.opf_name)
base, ext = href.rpartition('.')[0::2]
all_ids = {x.get('id') for x in self.opf_xpath('//*[@id]')}
c = 0
item_id = id_prefix
while item_id in all_ids:
c += 1
item_id = id_prefix + '%d' % c
all_names = {
x.get('href')
for x in self.opf_xpath('//opf:manifest/opf:item[@href]')
}
def exists(h):
return self.exists(self.href_to_name(h, self.opf_name))
c = 0
while href in all_names or exists(href):
c += 1
href = '%s_%d.%s' % (base, c, ext)
manifest = self.opf_xpath('//opf:manifest')[0]
item = manifest.makeelement(OPF('item'), id=item_id, href=href)
item.set('media-type', media_type)
self.insert_into_xml(manifest, item)
self.dirty(self.opf_name)
name = self.href_to_name(href, self.opf_name)
self.name_path_map[name] = path = self.name_to_abspath(name)
self.mime_map[name] = media_type
# Ensure that the file corresponding to the newly created item exists
# otherwise cloned containers will fail when they try to get the number
# of links to the file
base = os.path.dirname(path)
if not os.path.exists(base):
os.makedirs(base)
open(path, 'wb').close()
return item
def convert_text(self, oeb_book):
from calibre.ebooks.metadata.opf2 import OPF
from calibre.ebooks.pdf.render.from_html import PDFWriter
self.log.debug('Serializing oeb input to disk for processing...')
self.get_cover_data()
self.process_fonts()
if self.opts.pdf_use_document_margins and self.stored_page_margins:
import json
for href, margins in iteritems(self.stored_page_margins):
item = oeb_book.manifest.hrefs.get(href)
if item is not None:
root = item.data
if hasattr(root, 'xpath') and margins:
root.set('data-calibre-pdf-output-page-margins',
json.dumps(margins))
# Remove javascript
for item in self.oeb.spine:
root = item.data
if hasattr(root, 'xpath'):
for script in root.xpath('//*[local-name()="script"]'):
script.text = None
script.attrib.clear()
for elem in root.iter('*'):
for attr in tuple(elem.attrib):
if attr.startswith('on'):
elem.set(attr, '')
with TemporaryDirectory('_pdf_out') as oeb_dir:
from calibre.customize.ui import plugin_for_output_format
oeb_output = plugin_for_output_format('oeb')
oeb_output.convert(oeb_book, oeb_dir, self.input_plugin, self.opts,
self.log)
opfpath = glob.glob(os.path.join(oeb_dir, '*.opf'))[0]
opf = OPF(opfpath, os.path.dirname(opfpath))
self.write(PDFWriter, [s.path for s in opf.spine],
getattr(opf, 'toc', None))
