Current File : //usr/lib/calibre/calibre/ebooks/oeb/polish/opf.py
#!/usr/bin/env python3
__license__ = 'GPL v3'
__copyright__ = '2014, Kovid Goyal <kovid at kovidgoyal.net>'
from lxml import etree
from calibre.ebooks.oeb.polish.container import OPF_NAMESPACES
from calibre.utils.localization import canonicalize_lang
def get_book_language(container):
for lang in container.opf_xpath('//dc:language'):
raw = lang.text
if raw:
code = canonicalize_lang(raw.split(',')[0].strip())
if code:
return code
def set_guide_item(container, item_type, title, name, frag=None):
ref_tag = '{%s}reference' % OPF_NAMESPACES['opf']
href = None
if name:
href = container.name_to_href(name, container.opf_name)
if frag:
href += '#' + frag
guides = container.opf_xpath('//opf:guide')
if not guides and href:
g = container.opf.makeelement('{%s}guide' % OPF_NAMESPACES['opf'], nsmap={'opf':OPF_NAMESPACES['opf']})
container.insert_into_xml(container.opf, g)
guides = [g]
for guide in guides:
matches = []
for child in guide.iterchildren(etree.Element):
if child.tag == ref_tag and child.get('type', '').lower() == item_type.lower():
matches.append(child)
if not matches and href:
r = guide.makeelement(ref_tag, type=item_type, nsmap={'opf':OPF_NAMESPACES['opf']})
container.insert_into_xml(guide, r)
matches.append(r)
for m in matches:
if href:
m.set('title', title), m.set('href', href), m.set('type', item_type)
else:
container.remove_from_xml(m)
container.dirty(container.opf_name)
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