def read_pdb_metadata(filename, metadata=None):
if metadata is None:
metadata = Metadata(None)
read_file_metadata(filename, metadata)
with closing(open(filename, "rb")) as stream:
metadata.pdb = _parse_pdb_header(stream)
return metadata
def read_opf_metadata (filename, metadata=None):
if metadata is None:
metadata = Metadata(OPF2)
read_file_metadata(filename, metadata)
with closing(open(filename, 'r')) as stream:
metadata.opf = parse_opf_xml(stream.read())
return metadata
def read_ztxt_metadata(filename, metadata=None):
if metadata is None:
metadata = Metadata(PDB_GUTENPALM)
read_pdb_metadata(filename, metadata)
offset, length = metadata.pdb.records[0]
with closing(open(filename, "rb")) as stream:
stream.seek(offset)
raw = stream.read(length)
metadata.ztxt = _parse_ztxt_header(raw)
return metadata
def read_plucker_metadata(filename, metadata=None):
if metadata is None:
metadata = Metadata(PDB_PLUCKER)
read_pdb_metadata(filename, metadata)
offset, length = metadata.pdb.records[0]
with closing(open(filename, "rb")) as stream:
stream.seek(offset)
raw = stream.read(length)
metadata.plucker = _parse_plucker_header(raw)
return metadata
def read_mobi_metadata (filename, metadata=None):
if metadata is None:
metadata = Metadata(MOBI)
read_pdb_metadata(filename, metadata)
if metadata.pdb.num_records < 2:
# No mobi header record !?
return metadata
offset, length = metadata.pdb.records[0]
with closing(open(filename, 'rb')) as stream:
stream.seek(offset)
raw = stream.read(length)
metadata.mobi = _parse_mobi_header(raw)
return metadata
def read_epub_metadata (filename, metadata=None):
if metadata is None:
metadata = Metadata(EPUB2)
read_file_metadata(filename, metadata)
reader = zip_reader(filename)
try:
container = _parse_container_xml(reader(CONTAINER_PATH))
except KeyError:
raise EPubException('missing OCF container.xml')
try:
metadata.opf = parse_opf_xml(reader(container[OPF2.mimetype]))
except KeyError:
raise EPubException('missing OPF package file')
return metadata
def read_ereader_metadata(filename, metadata=None):
if metadata is None:
metadata = Metadata(PDB_EREADER)
read_pdb_metadata(filename, metadata)
offset, length = metadata.pdb.records[0]
with closing(open(filename, "rb")) as stream:
stream.seek(offset)
raw = stream.read(length)
header_size = len(raw)
if header_size == 132:
metadata.ereader = _parse_ereader_header132(raw)
elif header_size in (116, 202):
metadata.ereader = _parse_ereader_header202(raw)
else:
raise EReaderException("Size mismatch. eReader header record size %s bytes is not supported" % header_size)
return metadata
def read_file_metadata (filename, metadata=None):
if metadata is None:
metadata = Metadata(None)
metadata.file_status = os.stat(filename)
return metadata
