def __init__(self, path, serializer=None):
if serializer is None:
serializer = UnicodeSerializer() # by default, just write to file as utf-8 encoded strings
self._path = path
self._ser = serializer
# open or create the corresponding file
self._f_read = open_or_create(path, 'r') # for reading only
self._f_write = open_or_create(path, 'a') # for appending. Stream positioned at end of file.
# create metadata
self._offsets = FileSequenceOffsets(self) # note: this must come before metadata
self._meta = FileSequenceMetaData(self)
def __init__(self, path):
self._path = path
self._f = open_or_create(self._path, 'r+')
s = self._f.read()
if len(s) == 0:
self._d = {}
else:
self._d = json.loads(s)
def __init__(self, path, serializer=None):
if serializer is None:
serializer = UnicodeSerializer(
) # by default, just write to file as utf-8 encoded strings
self._path = path
self._ser = serializer
# open or create the corresponding file
self._f_read = open_or_create(path, 'r') # for reading only
self._f_write = open_or_create(
path, 'a') # for appending. Stream positioned at end of file.
# create metadata
self._offsets = FileSequenceOffsets(
self) # note: this must come before metadata
self._meta = FileSequenceMetaData(self)
def __init__(self, path):
self._path = path
self._f = open_or_create(self._path, 'r+')
s = self._f.read()
if len(s) == 0:
self._d = {}
else:
self._d = json.loads(s)
def __init__(self, file_seq):
offsets_path = file_seq.path + '.offsets'
file_existed = os.path.isfile(offsets_path) # check if file already existed
self._f_write = open_or_create(offsets_path, 'a') # open for appending only
if file_existed:
# load offsets from file into memory
with open(offsets_path, 'r') as f:
self._offsets = [int(line) for line in f] # int cast strips newline automatically
else:
# build offsets (in-memory and on-file)
self._offsets = []
current_offset = 0
for line in file_seq.iter_raw_lines():
self.append(current_offset)
current_offset += len(line)
self._offsets_path = offsets_path
def __init__(self, file_seq):
offsets_path = file_seq.path + '.offsets'
file_existed = os.path.isfile(
offsets_path) # check if file already existed
self._f_write = open_or_create(offsets_path,
'a') # open for appending only
if file_existed:
# load offsets from file into memory
with open(offsets_path, 'r') as f:
self._offsets = [int(line) for line in f
] # int cast strips newline automatically
else:
# build offsets (in-memory and on-file)
self._offsets = []
current_offset = 0
for line in file_seq.iter_raw_lines():
self.append(current_offset)
current_offset += len(line)
self._offsets_path = offsets_path