X-Git-Url: https://git.madduck.net/etc/taskwarrior.git/blobdiff_plain/aa462665e38384ef67fb9d2659c509184a34577a..252fcc58df50a2d70aaaaf90f119d7e76da78ce3:/tasklib/task.py diff --git a/tasklib/task.py b/tasklib/task.py index cb38c4e..4dab528 100644 --- a/tasklib/task.py +++ b/tasklib/task.py @@ -5,6 +5,7 @@ import json import logging import os import six +import sys import subprocess DATE_FORMAT = '%Y%m%dT%H%M%SZ' @@ -24,14 +25,111 @@ class TaskWarriorException(Exception): pass -class TaskResource(object): +class SerializingObject(object): + """ + Common ancestor for TaskResource & TaskFilter, since they both + need to serialize arguments. + """ + + def _deserialize(self, key, value): + hydrate_func = getattr(self, 'deserialize_{0}'.format(key), + lambda x: x if x != '' else None) + return hydrate_func(value) + + def _serialize(self, key, value): + dehydrate_func = getattr(self, 'serialize_{0}'.format(key), + lambda x: x if x is not None else '') + return dehydrate_func(value) + + def timestamp_serializer(self, date): + if not date: + return None + return date.strftime(DATE_FORMAT) + + def timestamp_deserializer(self, date_str): + if not date_str: + return None + return datetime.datetime.strptime(date_str, DATE_FORMAT) + + def serialize_entry(self, value): + return self.timestamp_serializer(value) + + def deserialize_entry(self, value): + return self.timestamp_deserializer(value) + + def serialize_modified(self, value): + return self.timestamp_serializer(value) + + def deserialize_modified(self, value): + return self.timestamp_deserializer(value) + + def serialize_due(self, value): + return self.timestamp_serializer(value) + + def deserialize_due(self, value): + return self.timestamp_deserializer(value) + + def serialize_scheduled(self, value): + return self.timestamp_serializer(value) + + def deserialize_scheduled(self, value): + return self.timestamp_deserializer(value) + + def serialize_until(self, value): + return self.timestamp_serializer(value) + + def deserialize_until(self, value): + return self.timestamp_deserializer(value) + + def serialize_wait(self, value): + return self.timestamp_serializer(value) + + def deserialize_wait(self, value): + return self.timestamp_deserializer(value) + + def deserialize_annotations(self, data): + return [TaskAnnotation(self, d) for d in data] if data else [] + + def serialize_tags(self, tags): + return ','.join(tags) if tags else '' + + def deserialize_tags(self, tags): + if isinstance(tags, six.string_types): + return tags.split(',') if tags else [] + return tags or [] + + def serialize_depends(self, cur_dependencies): + # Return the list of uuids + return ','.join(task['uuid'] for task in cur_dependencies) + + def deserialize_depends(self, raw_uuids): + raw_uuids = raw_uuids or '' # Convert None to empty string + uuids = raw_uuids.split(',') + return set(self.warrior.tasks.get(uuid=uuid) for uuid in uuids if uuid) + + +class TaskResource(SerializingObject): read_only_fields = [] def _load_data(self, data): - self._data = data + self._data = dict((key, self._deserialize(key, value)) + for key, value in data.items()) # We need to use a copy for original data, so that changes - # are not propagated - self._original_data = data.copy() + # are not propagated. + self._original_data = copy.deepcopy(self._data) + + def _update_data(self, data, update_original=False): + """ + Low level update of the internal _data dict. Data which are coming as + updates should already be serialized. If update_original is True, the + original_data dict is updated as well. + """ + self._data.update(dict((key, self._deserialize(key, value)) + for key, value in data.items())) + + if update_original: + self._original_data = copy.deepcopy(self._data) + def __getitem__(self, key): # This is a workaround to make TaskResource non-iterable @@ -42,22 +140,15 @@ class TaskResource(object): except ValueError: pass - return self._deserialize(key, self._data.get(key)) + if key not in self._data: + self._data[key] = self._deserialize(key, None) + + return self._data.get(key) def __setitem__(self, key, value): if key in self.read_only_fields: raise RuntimeError('Field \'%s\' is read-only' % key) - self._data[key] = self._serialize(key, value) - - def _deserialize(self, key, value): - hydrate_func = getattr(self, 'deserialize_{0}'.format(key), - lambda x: x) - return hydrate_func(value) - - def _serialize(self, key, value): - dehydrate_func = getattr(self, 'serialize_{0}'.format(key), - lambda x: x) - return dehydrate_func(value) + self._data[key] = value def __str__(self): s = six.text_type(self.__unicode__()) @@ -76,18 +167,17 @@ class TaskAnnotation(TaskResource): self.task = task self._load_data(data) - def deserialize_entry(self, data): - return datetime.datetime.strptime(data, DATE_FORMAT) if data else None - - def serialize_entry(self, date): - return date.strftime(DATE_FORMAT) if date else '' - def remove(self): self.task.remove_annotation(self) def __unicode__(self): return self['description'] + def __eq__(self, other): + # consider 2 annotations equal if they belong to the same task, and + # their data dics are the same + return self.task == other.task and self._data == other._data + __repr__ = __unicode__ @@ -116,9 +206,41 @@ class Task(TaskResource): """ pass - def __init__(self, warrior, data={}, **kwargs): + @classmethod + def from_input(cls, modify=False): + """ + Creates a Task object, directly from the stdin, by reading one line. + If modify=True, two lines are used, first line interpreted as the + original state of the Task object, and second line as its new, + modified value. This is consistent with the TaskWarrior's hook + system. + + Object created by this method should not be saved, deleted + or refreshed, as t could create a infinite loop. For this + reason, TaskWarrior instance is set to None. + """ + + # TaskWarrior instance is set to None + task = cls(None) + + # Load the data from the input + task._load_data(json.loads(sys.stdin.readline().strip())) + + # If this is a on-modify event, we are provided with additional + # line of input, which provides updated data + if modify: + task._update_data(json.loads(sys.stdin.readline().strip())) + + return task + + def __init__(self, warrior, **kwargs): self.warrior = warrior + # Check that user is not able to set read-only value in __init__ + for key in kwargs.keys(): + if key in self.read_only_fields: + raise RuntimeError('Field \'%s\' is read-only' % key) + # We serialize the data in kwargs so that users of the library # do not have to pass different data formats via __setitem__ and # __init__ methods, that would be confusing @@ -127,10 +249,6 @@ class Task(TaskResource): self._load_data(dict((key, self._serialize(key, value)) for (key, value) in six.iteritems(kwargs))) - # We keep data for backwards compatibility - # TODO: Should we keep this using unserialized access to _data dict? - self._data.update(data) - def __unicode__(self): return self['description'] @@ -158,6 +276,10 @@ class Task(TaskResource): if self._data.get(key) != self._original_data.get(key): yield key + @property + def _is_modified(self): + return bool(list(self._modified_fields)) + @property def completed(self): return self['status'] == six.text_type('completed') @@ -178,16 +300,6 @@ class Task(TaskResource): def saved(self): return self['uuid'] is not None or self['id'] is not None - def serialize_due(self, date): - if not date: - return None - return date.strftime(DATE_FORMAT) - - def deserialize_due(self, date_str): - if not date_str: - return None - return datetime.datetime.strptime(date_str, DATE_FORMAT) - def serialize_depends(self, cur_dependencies): # Check that all the tasks are saved for task in cur_dependencies: @@ -195,13 +307,7 @@ class Task(TaskResource): raise Task.NotSaved('Task \'%s\' needs to be saved before ' 'it can be set as dependency.' % task) - # Return the list of uuids - return ','.join(task['uuid'] for task in cur_dependencies) - - def deserialize_depends(self, raw_uuids): - raw_uuids = raw_uuids or '' # Convert None to empty string - uuids = raw_uuids.split(',') - return set(self.warrior.tasks.get(uuid=uuid) for uuid in uuids if uuid) + return super(Task, self).serialize_depends(cur_dependencies) def format_depends(self): # We need to generate added and removed dependencies list, @@ -211,28 +317,24 @@ class Task(TaskResource): # to keep a list of all depedencies in the _data dictionary, # not just currently added/removed ones - old_dependencies_raw = self._original_data.get('depends','') - old_dependencies = self.deserialize_depends(old_dependencies_raw) + old_dependencies = self._original_data.get('depends', set()) added = self['depends'] - old_dependencies removed = old_dependencies - self['depends'] # Removed dependencies need to be prefixed with '-' - return ','.join( + return 'depends:' + ','.join( [t['uuid'] for t in added] + ['-' + t['uuid'] for t in removed] ) - def deserialize_annotations(self, data): - return [TaskAnnotation(self, d) for d in data] if data else [] - - def deserialize_tags(self, tags): - if isinstance(tags, basestring): - return tags.split(',') if tags else [] - return tags - - def serialize_tags(self, tags): - return ','.join(tags) if tags else '' + def format_description(self): + # Task version older than 2.4.0 ignores first word of the + # task description if description: prefix is used + if self.warrior.version < VERSION_2_4_0: + return self._data['description'] + else: + return "description:'{0}'".format(self._data['description'] or '') def delete(self): if not self.saved: @@ -244,9 +346,7 @@ class Task(TaskResource): if self.deleted: raise Task.DeletedTask("Task was already deleted") - self.warrior.execute_command([self['uuid'], 'delete'], config_override={ - 'confirmation': 'no', - }) + self.warrior.execute_command([self['uuid'], 'delete']) # Refresh the status again, so that we have updated info stored self.refresh(only_fields=['status']) @@ -270,6 +370,9 @@ class Task(TaskResource): self.refresh(only_fields=['status']) def save(self): + if self.saved and not self._is_modified: + return + args = [self['uuid'], 'modify'] if self.saved else ['add'] args.extend(self._get_modified_fields_as_args()) output = self.warrior.execute_command(args) @@ -299,7 +402,7 @@ class Task(TaskResource): def remove_annotation(self, annotation): if not self.saved: - raise Task.NotSaved("Task needs to be saved to add annotation") + raise Task.NotSaved("Task needs to be saved to remove annotation") if isinstance(annotation, TaskAnnotation): annotation = annotation['description'] @@ -311,15 +414,16 @@ class Task(TaskResource): args = [] def add_field(field): - # Task version older than 2.4.0 ignores first word of the - # task description if description: prefix is used - if self.warrior.version < VERSION_2_4_0 and field == 'description': - args.append(self._data[field]) - elif field == 'depends': - args.append('{0}:{1}'.format(field, self.format_depends())) - else: - # Use empty string to substitute for None value - args.append('{0}:{1}'.format(field, self._data[field] or '')) + # Add the output of format_field method to args list (defaults to + # field:value) + serialized_value = self._serialize(field, self._data[field]) or '' + format_default = lambda: "{0}:{1}".format( + field, + "'{0}'".format(serialized_value) if serialized_value else '' + ) + format_func = getattr(self, 'format_{0}'.format(field), + format_default) + args.append(format_func()) # If we're modifying saved task, simply pass on all modified fields if self.saved: @@ -347,17 +451,19 @@ class Task(TaskResource): if only_fields: to_update = dict( [(k, new_data.get(k)) for k in only_fields]) - self._data.update(to_update) - self._original_data.update(to_update) + self._update_data(to_update, update_original=True) else: - self._data = new_data - # We need to create a clone for original_data though - # Shallow copy is alright, since data dict uses only - # primitive data types - self._original_data = new_data.copy() + self._load_data(new_data) + + def export_data(self): + """ + Exports current data contained in the Task as JSON + """ + # We need to remove spaces for TW-1504, use custom separators + return json.dumps(self._data, separators=(',',':')) -class TaskFilter(object): +class TaskFilter(SerializingObject): """ A set of parameters to filter the task list with. """ @@ -373,14 +479,23 @@ class TaskFilter(object): # Replace the value with empty string, since that is the # convention in TW for empty values - value = value if value is not None else '' + attribute_key = key.split('.')[0] + value = self._serialize(attribute_key, value) # If we are filtering by uuid:, do not use uuid keyword # due to TW-1452 bug if key == 'uuid': self.filter_params.insert(0, value) else: - self.filter_params.append('{0}:{1}'.format(key, value)) + # Surround value with aphostrophes unless it's a empty string + value = "'%s'" % value if value else '' + + # We enforce equality match by using 'is' (or 'none') modifier + # Without using this syntax, filter fails due to TW-1479 + modifier = '.is' if value else '.none' + key = key + modifier if '.' not in key else key + + self.filter_params.append("{0}:{1}".format(key, value)) def get_filter_params(self): return [f for f in self.filter_params if f] @@ -508,6 +623,8 @@ class TaskWarrior(object): os.makedirs(data_location) self.config = { 'data.location': os.path.expanduser(data_location), + 'confirmation': 'no', + 'dependency.confirmation': 'no', # See TW-1483 or taskrc man page } self.tasks = TaskQuerySet(self) self.version = self._get_version() @@ -551,7 +668,9 @@ class TaskWarrior(object): if line: data = line.strip(',') try: - tasks.append(Task(self, json.loads(data))) + filtered_task = Task(self) + filtered_task._load_data(json.loads(data)) + tasks.append(filtered_task) except ValueError: raise TaskWarriorException('Invalid JSON: %s' % data) return tasks @@ -563,6 +682,4 @@ class TaskWarrior(object): }) def undo(self): - self.execute_command(['undo'], config_override={ - 'confirmation': 'no', - }) + self.execute_command(['undo'])