def get_metadata(stream, extract_cover=True):
""" Return metadata as a L{MetaInfo} object """
mi = MetaInformation(_('Unknown'), [_('Unknown')])
snbFile = SNBFile()
try:
if not hasattr(stream, 'write'):
snbFile.Parse(io.BytesIO(stream), True)
else:
stream.seek(0)
snbFile.Parse(stream, True)
meta = snbFile.GetFileStream('snbf/book.snbf')
if meta is not None:
meta = etree.fromstring(meta)
mi.title = meta.find('.//head/name').text
mi.authors = [meta.find('.//head/author').text]
mi.language = meta.find('.//head/language').text.lower().replace('_', '-')
mi.publisher = meta.find('.//head/publisher').text
if extract_cover:
cover = meta.find('.//head/cover')
if cover is not None and cover.text is not None:
root, ext = os.path.splitext(cover.text)
if ext == '.jpeg':
ext = '.jpg'
mi.cover_data = (ext[-3:], snbFile.GetFileStream('snbc/images/' + cover.text))
except Exception:
import traceback
traceback.print_exc()
return mi
def convert(self, stream, options, file_ext, log, accelerators):
import uuid
from calibre.ebooks.oeb.base import DirContainer
from calibre.ebooks.snb.snbfile import SNBFile
from calibre.utils.xml_parse import safe_xml_fromstring
log.debug("Parsing SNB file...")
snbFile = SNBFile()
try:
snbFile.Parse(stream)
except:
raise ValueError("Invalid SNB file")
if not snbFile.IsValid():
log.debug("Invalid SNB file")
raise ValueError("Invalid SNB file")
log.debug("Handle meta data ...")
from calibre.ebooks.conversion.plumber import create_oebbook
oeb = create_oebbook(log,
None,
options,
encoding=options.input_encoding,
populate=False)
meta = snbFile.GetFileStream('snbf/book.snbf')
if meta is not None:
meta = safe_xml_fromstring(meta)
l = {
'title': './/head/name',
'creator': './/head/author',
'language': './/head/language',
'generator': './/head/generator',
'publisher': './/head/publisher',
'cover': './/head/cover',
}
d = {}
for item in l:
node = meta.find(l[item])
if node is not None:
d[item] = node.text if node.text is not None else ''
else:
d[item] = ''
oeb.metadata.add('title', d['title'])
oeb.metadata.add('creator', d['creator'], attrib={'role': 'aut'})
oeb.metadata.add('language',
d['language'].lower().replace('_', '-'))
oeb.metadata.add('generator', d['generator'])
oeb.metadata.add('publisher', d['publisher'])
if d['cover'] != '':
oeb.guide.add('cover', 'Cover', d['cover'])
bookid = unicode_type(uuid.uuid4())
oeb.metadata.add('identifier', bookid, id='uuid_id', scheme='uuid')
for ident in oeb.metadata.identifier:
if 'id' in ident.attrib:
oeb.uid = oeb.metadata.identifier[0]
break
with TemporaryDirectory('_snb2oeb', keep=True) as tdir:
log.debug('Process TOC ...')
toc = snbFile.GetFileStream('snbf/toc.snbf')
oeb.container = DirContainer(tdir, log)
if toc is not None:
toc = safe_xml_fromstring(toc)
i = 1
for ch in toc.find('.//body'):
chapterName = ch.text
chapterSrc = ch.get('src')
fname = 'ch_%d.htm' % i
data = snbFile.GetFileStream('snbc/' + chapterSrc)
if data is None:
continue
snbc = safe_xml_fromstring(data)
lines = []
for line in snbc.find('.//body'):
if line.tag == 'text':
lines.append('<p>%s</p>' % html_encode(line.text))
elif line.tag == 'img':
lines.append('<p><img src="%s" /></p>' %
html_encode(line.text))
with open(os.path.join(tdir, fname), 'wb') as f:
f.write((HTML_TEMPLATE %
(chapterName, '\n'.join(lines))).encode(
'utf-8', 'replace'))
oeb.toc.add(ch.text, fname)
id, href = oeb.manifest.generate(
id='html', href=ascii_filename(fname))
item = oeb.manifest.add(id, href, 'text/html')
item.html_input_href = fname
oeb.spine.add(item, True)
i = i + 1
imageFiles = snbFile.OutputImageFiles(tdir)
for f, m in imageFiles:
id, href = oeb.manifest.generate(id='image',
href=ascii_filename(f))
item = oeb.manifest.add(id, href, m)
item.html_input_href = f
return oeb