X-Git-Url: https://git.madduck.net/etc/taskwarrior.git/blobdiff_plain/ae7397e43578a8adcff05714ea6aa5960af13145..cea2e5817b675cf2289a8fe632bc8909fed00d4f:/tasklib/task.py diff --git a/tasklib/task.py b/tasklib/task.py index ca21b2b..56cda19 100644 --- a/tasklib/task.py +++ b/tasklib/task.py @@ -28,6 +28,37 @@ class TaskWarriorException(Exception): pass +class ReadOnlyDictView(object): + """ + Provides simplified read-only view upon dict object. + """ + + def __init__(self, viewed_dict): + self.viewed_dict = viewed_dict + + def __getitem__(self, key): + return copy.deepcopy(self.viewed_dict.__getitem__(key)) + + def __contains__(self, k): + return self.viewed_dict.__contains__(k) + + def __iter__(self): + for value in self.viewed_dict: + yield copy.deepcopy(value) + + def __len__(self): + return len(self.viewed_dict) + + def get(self, key, default=None): + return copy.deepcopy(self.viewed_dict.get(key, default)) + + def items(self): + return [copy.deepcopy(v) for v in self.viewed_dict.items()] + + def values(self): + return [copy.deepcopy(v) for v in self.viewed_dict.values()] + + class SerializingObject(object): """ Common ancestor for TaskResource & TaskFilter, since they both @@ -44,6 +75,15 @@ class SerializingObject(object): not export empty-valued attributes) if the attribute is not iterable (e.g. list or set), in which case a empty iterable should be used. + + Normalizing methods should hold the following contract: + - They are used to validate and normalize the user input. + Any attribute value that comes from the user (during Task + initialization, assignign values to Task attributes, or + filtering by user-provided values of attributes) is first + validated and normalized using the normalize_{key} method. + - If validation or normalization fails, normalizer is expected + to raise ValueError. """ def _deserialize(self, key, value): @@ -63,6 +103,10 @@ class SerializingObject(object): or entered as a value of Task attribute. """ + # None value should not be converted by normalizer + if value is None: + return None + normalize_func = getattr(self, 'normalize_{0}'.format(key), lambda x: x) @@ -93,36 +137,72 @@ class SerializingObject(object): def deserialize_entry(self, value): return self.timestamp_deserializer(value) + def normalize_entry(self, value): + return self.datetime_normalizer(value) + def serialize_modified(self, value): return self.timestamp_serializer(value) def deserialize_modified(self, value): return self.timestamp_deserializer(value) + def normalize_modified(self, value): + return self.datetime_normalizer(value) + + def serialize_start(self, value): + return self.timestamp_serializer(value) + + def deserialize_start(self, value): + return self.timestamp_deserializer(value) + + def normalize_start(self, value): + return self.datetime_normalizer(value) + + def serialize_end(self, value): + return self.timestamp_serializer(value) + + def deserialize_end(self, value): + return self.timestamp_deserializer(value) + + def normalize_end(self, value): + return self.datetime_normalizer(value) + def serialize_due(self, value): return self.timestamp_serializer(value) def deserialize_due(self, value): return self.timestamp_deserializer(value) + def normalize_due(self, value): + return self.datetime_normalizer(value) + def serialize_scheduled(self, value): return self.timestamp_serializer(value) def deserialize_scheduled(self, value): return self.timestamp_deserializer(value) + def normalize_scheduled(self, value): + return self.datetime_normalizer(value) + def serialize_until(self, value): return self.timestamp_serializer(value) def deserialize_until(self, value): return self.timestamp_deserializer(value) + def normalize_until(self, value): + return self.datetime_normalizer(value) + def serialize_wait(self, value): return self.timestamp_serializer(value) def deserialize_wait(self, value): return self.timestamp_deserializer(value) + def normalize_wait(self, value): + return self.datetime_normalizer(value) + def serialize_annotations(self, value): value = value if value is not None else [] @@ -153,7 +233,7 @@ class SerializingObject(object): uuids = raw_uuids.split(',') return set(self.warrior.tasks.get(uuid=uuid) for uuid in uuids if uuid) - def normalize_datetime(self, value): + def datetime_normalizer(self, value): """ Normalizes date/datetime value (considered to come from user input) to localized datetime value. Following conversions happen: @@ -175,9 +255,16 @@ class SerializingObject(object): # If the value is already localized, there is no need to change # time zone at this point. Also None is a valid value too. localized = value - + return localized - + + def normalize_uuid(self, value): + # Enforce sane UUID + if not isinstance(value, six.string_types) or value == '': + raise ValueError("UUID must be a valid non-empty string, " + "not: {}".format(value)) + + return value class TaskResource(SerializingObject): @@ -221,11 +308,8 @@ class TaskResource(SerializingObject): if key in self.read_only_fields: raise RuntimeError('Field \'%s\' is read-only' % key) - # Localize any naive date/datetime to the detected timezone - if (isinstance(value, datetime.datetime) or - isinstance(value, datetime.date)): - value = self.normalize_datetime(value) - + # Normalize the user input before saving it + value = self._normalize(key, value) self._data[key] = value def __str__(self): @@ -319,7 +403,7 @@ class Task(TaskResource): pass @classmethod - def from_input(cls, input_file=sys.stdin, modify=None): + def from_input(cls, input_file=sys.stdin, modify=None, warrior=None): """ Creates a Task object, directly from the stdin, by reading one line. If modify=True, two lines are used, first line interpreted as the @@ -335,13 +419,18 @@ class Task(TaskResource): but defaults to sys.stdin. """ - # TaskWarrior instance is set to None - task = cls(None) - # Detect the hook type if not given directly name = os.path.basename(sys.argv[0]) modify = name.startswith('on-modify') if modify is None else modify + # Create the TaskWarrior instance if none passed + if warrior is None: + hook_parent_dir = os.path.dirname(os.path.dirname(sys.argv[0])) + warrior = TaskWarrior(data_location=hook_parent_dir) + + # TaskWarrior instance is set to None + task = cls(warrior) + # Load the data from the input task._load_data(json.loads(input_file.readline().strip())) @@ -369,6 +458,9 @@ class Task(TaskResource): for (key, value) in six.iteritems(kwargs)) self._original_data = copy.deepcopy(self._data) + # Provide read only access to the original data + self.original = ReadOnlyDictView(self._original_data) + def __unicode__(self): return self['description'] @@ -458,8 +550,24 @@ class Task(TaskResource): self.warrior.execute_command([self['uuid'], 'delete']) # Refresh the status again, so that we have updated info stored + self.refresh(only_fields=['status', 'start', 'end']) + + def start(self): + if not self.saved: + raise Task.NotSaved("Task needs to be saved before it can be started") + + # Refresh, and raise exception if task is already completed/deleted self.refresh(only_fields=['status']) + if self.completed: + raise Task.CompletedTask("Cannot start a completed task") + elif self.deleted: + raise Task.DeletedTask("Deleted task cannot be started") + + self.warrior.execute_command([self['uuid'], 'start']) + + # Refresh the status again, so that we have updated info stored + self.refresh(only_fields=['status', 'start']) def done(self): if not self.saved: @@ -476,7 +584,7 @@ class Task(TaskResource): self.warrior.execute_command([self['uuid'], 'done']) # Refresh the status again, so that we have updated info stored - self.refresh(only_fields=['status']) + self.refresh(only_fields=['status', 'start', 'end']) def save(self): if self.saved and not self.modified: @@ -593,12 +701,8 @@ class TaskFilter(SerializingObject): # convention in TW for empty values attribute_key = key.split('.')[0] - # Since this is user input, we need to normalize datetime - # objects - if (isinstance(value, datetime.datetime) or - isinstance(value, datetime.date)): - value = self.normalize_datetime(value) - + # Since this is user input, we need to normalize before we serialize + value = self._normalize(key, value) value = self._serialize(attribute_key, value) # If we are filtering by uuid:, do not use uuid keyword @@ -766,22 +870,30 @@ class TaskWarrior(object): stdout, stderr = [x.decode('utf-8') for x in p.communicate()] return stdout.strip('\n') - def execute_command(self, args, config_override={}): + def execute_command(self, args, config_override={}, allow_failure=True): command_args = self._get_command_args( args, config_override=config_override) logger.debug(' '.join(command_args)) p = subprocess.Popen(command_args, stdout=subprocess.PIPE, stderr=subprocess.PIPE) stdout, stderr = [x.decode('utf-8') for x in p.communicate()] - if p.returncode: + if p.returncode and allow_failure: if stderr.strip(): - error_msg = stderr.strip().splitlines()[-1] + error_msg = stderr.strip() else: error_msg = stdout.strip() raise TaskWarriorException(error_msg) return stdout.strip().split('\n') + def enforce_recurrence(self): + # Run arbitrary report command which will trigger generation + # of recurrent tasks. + # TODO: Make a version dependant enforcement once + # TW-1531 is handled + self.execute_command(['next'], allow_failure=False) + def filter_tasks(self, filter_obj): + self.enforce_recurrence() args = ['export', '--'] + filter_obj.get_filter_params() tasks = [] for line in self.execute_command(args):