def try_append(self, item):
if item.kind == 'content':
data = [ b'\xdd' ]
data.append(valuecodecs.make_varuint(len(item.cid)))
data.append(valuecodecs.make_varuint(len(item.checksum)))
if item.cid.startswith(item.checksum):
data.append(item.cid)
else:
if not item.checksum.startswith(item.cid):
raise InvalidDataError('cid and checksum mismatch')
data.append(item.checksum)
data.append(valuecodecs.make_uint32(item.first))
if hasattr(item, 'last'):
self._logger.warn('deprecated', 'item.last')
# The "last" data item in the file is obsoleted, so just
# fill it with the first seen time instead.
data.append(valuecodecs.make_uint32(item.first))
if hasattr(item, 'updates'):
self._logger.warn('deprecated', 'item.updates')
data = b''.join(data)
if (self._blockdatasize is not None and
self._datasize + len(data) > self._blockdatasize):
return False
self.modified = True
self._items.append((data, item))
self._datasize += len(data)
return True
raise InvalidDataError('Unknown item type: ' + item.kind)
def try_append(self, item):
if item.kind == 'directory':
if item.extra_data:
data = [ b'\x92' ]
else:
data = [ b'\x90' ]
data.append(valuecodecs.make_varuint(item.dirid))
data.append(valuecodecs.make_varuint(item.parent))
data.append(valuecodecs.make_varuint(len(item.name)))
data.append(item.name)
if item.extra_data:
data.append(valuecodecs.make_varuint(item.extra_data))
data = b''.join(data)
elif item.kind.startswith('file'):
if item.kind == 'file':
if item.extra_data:
data = [ b'\x93' ]
else:
data = [ b'\x91' ]
else:
data = [ b'\x94' ]
data.append(valuecodecs.make_varuint(item.parent))
data.append(valuecodecs.make_varuint(len(item.name)))
data.append(item.name)
data.append(valuecodecs.make_varuint(len(item.cid)))
data.append(item.cid)
data.append(valuecodecs.make_varuint(item.size))
year = item.mtime_year
second = item.mtime_second
ns = item.mtime_ns
if year < 1000 or year > 9999:
raise InvalidDataError(
'Unreasonable last-modified year: ' + str(year))
if second < 0 or second > 31622399:
# Not checking for December 32 in non-leap years
raise InvalidDataError(
'Unreasonable last-modifed second of year: ' + str(second))
if ns < 0 or ns > 999999999:
raise InvalidDataError(
'Unreasonable last-modified nanosecond: ' + str(ns))
mtime = bytes((
item.mtime_year & 0xff, (item.mtime_year >> 8),
item.mtime_second & 0xff, (item.mtime_second >> 8) & 0xff,
(item.mtime_second >> 16) & 0xff,
((item.mtime_second >> 17) & 0x80) + (item.mtime_ns & 0x3f),
(item.mtime_ns >> 6) & 0xff, (item.mtime_ns >> 14) & 0xff,
item.mtime_ns >> 22))
data.append(mtime)
if item.kind != 'file':
filetypechar = self._filetypechars.get(item.kind)
if filetypechar is None:
raise AssertionError('Unknown file type: ' + item.kind)
data.append(filetypechar)
if item.kind != 'file' or item.extra_data:
data.append(valuecodecs.make_varuint(item.extra_data))
data = b''.join(data)
elif item.kind == 'key-value':
assert b':' not in item.key
data = [ ]
data.append(valuecodecs.make_varuint(item.kvid))
data.append(item.key)
data.append(b':')
data.append(item.value)
data = b''.join(data)
data = b'\x21' + valuecodecs.make_varuint(len(data)) + data
elif item.kind == 'extradef':
data = [ ]
data.append(valuecodecs.make_varuint(item.xid))
for kvid in item.kvids:
data.append(valuecodecs.make_varuint(kvid))
data = b''.join(data)
data = b'\x22' + valuecodecs.make_varuint(len(data)) + data
else:
raise InvalidDataError('Unknown item type: ' + item.kind)
if (self._blockdatasize is not None and
self._datasize + len(data) > self._blockdatasize):
return False
self.modified = True
self._items.append((data, item))
self._datasize += len(data)
return True
