def get(self, binary=False):
if self.__splitting is not None:
(string, itemsize, count, index) = self.__splitting
else:
queue = self.__queue
# we would use .delete_head_nowait() but it returns a crashy wrapper instead of a sensible value like None. So implement a test (which is safe as long as we're the only reader)
message = safe_delete_head_nowait(queue)
if not message:
return None
string = message.to_string()
itemsize = int(message.arg1())
count = int(message.arg2())
index = 0
assert index < count
# update state
if index == count - 1:
self.__splitting = None
else:
self.__splitting = (string, itemsize, count, index + 1)
# extract value
# TODO: this should be a separate concern, refactor
item_string = string[itemsize * index:itemsize * (index + 1)]
if binary:
# In binary mode, pack info with already-binary data.
value = struct.pack(self.__type.get_info_format(), *self.__igetter()) + item_string
else:
# In python-value mode, unpack binary data.
unpacker = array.array(self.__type.get_array_format())
unpacker.fromstring(item_string)
value = (self.__igetter(), unpacker.tolist())
return value
def get(self, binary=False):
if self.__splitting is not None:
(string, itemsize, count, index) = self.__splitting
else:
queue = self.__queue
# we would use .delete_head_nowait() but it returns a crashy wrapper instead of a sensible value like None. So implement a test (which is safe as long as we're the only reader)
message = safe_delete_head_nowait(queue)
if not message:
return None
string = message.to_string()
itemsize = int(message.arg1())
count = int(message.arg2())
index = 0
assert index < count
# update state
if index == count - 1:
self.__splitting = None
else:
self.__splitting = (string, itemsize, count, index + 1)
# extract value
# TODO: this should be a separate concern, refactor
item_string = string[itemsize * index:itemsize * (index + 1)]
if binary:
# In binary mode, pack info with already-binary data.
value = struct.pack(self.__type.get_info_format(), *
self.__igetter()) + item_string
else:
# In python-value mode, unpack binary data.
unpacker = array.array(self.__type.get_array_format())
unpacker.fromstring(item_string)
value = (self.__igetter(), unpacker.tolist())
return value
def get_text(self):
message = safe_delete_head_nowait(self.__char_queue)
if message:
textstring = self.__text
textstring += message.to_string().decode('us-ascii')
# TODO: Make the buffer longer and arrange so partial updates rather than the entire buffer can be sent to clients.
self.__text = textstring[-100:]
return self.__text
def get_text(self):
message = safe_delete_head_nowait(self.__char_queue)
if message:
textstring = self.__text
textstring += message.to_string().decode('us-ascii')
# TODO: Make the buffer longer and arrange so partial updates rather than the entire buffer can be sent to clients.
self.__text = textstring[-100:]
return self.__text
def _poll_from_poller(self, fire):
"""Extract all items currently in the queue and deliver them."""
got_info = False
latest_info = None
while True:
message = safe_delete_head_nowait(self.__queue)
if not message:
break
if not got_info:
got_info = True
latest_info = self.__info_getter()
self._deliver_message(message, latest_info, fire)