X-Git-Url: https://git.madduck.net/etc/taskwarrior.git/blobdiff_plain/e17985e0d4a7ce2eb83c580c71e2f7c1af7f093b..96046e8c80143ff19d73e0296f989842cc0d4c93:/tasklib/task.py?ds=inline diff --git a/tasklib/task.py b/tasklib/task.py index f74e0d2..9246e1f 100644 --- a/tasklib/task.py +++ b/tasklib/task.py @@ -1,11 +1,16 @@ +import copy +import datetime import json +import logging import os import subprocess -import tempfile -import uuid - +DATE_FORMAT = '%Y%m%dT%H%M%SZ' +REPR_OUTPUT_SIZE = 10 PENDING = 'pending' +COMPLETED = 'completed' + +logger = logging.getLogger(__name__) class TaskWarriorException(Exception): @@ -14,90 +19,267 @@ class TaskWarriorException(Exception): class Task(object): + class DoesNotExist(Exception): + pass + def __init__(self, warrior, data={}): self.warrior = warrior self._data = data + self._modified_fields = set() + + def __unicode__(self): + return self['description'] def __getitem__(self, key): - return self._data.get(key) + hydrate_func = getattr(self, 'deserialize_{0}'.format(key), + lambda x: x) + return hydrate_func(self._data.get(key)) - def __setitem__(self, key, val): - self._data[key] = val + def __setitem__(self, key, value): + dehydrate_func = getattr(self, 'serialize_{0}'.format(key), + lambda x: x) + self._data[key] = dehydrate_func(value) + self._modified_fields.add(key) - def __unicode__(self): - return self._data.get('description') + def serialize_due(self, date): + return date.strftime(DATE_FORMAT) - def regenerate_uuid(self): - self['uuid'] = str(uuid.uuid4()) + def deserialize_due(self, date_str): + if not date_str: + return None + return datetime.datetime.strptime(date_str, DATE_FORMAT) + + def serialize_annotations(self, annotations): + ann_list = list(annotations) + for ann in ann_list: + ann['entry'] = ann['entry'].strftime(DATE_FORMAT) + return ann_list + + def deserialize_annotations(self, annotations): + ann_list = list(annotations) + for ann in ann_list: + ann['entry'] = datetime.datetime.strptime( + ann['entry'], DATE_FORMAT) + return ann_list + + 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 delete(self): - self.warrior.delete_task(self['uuid']) + self.warrior.execute_command([self['id'], 'delete'], config_override={ + 'confirmation': 'no', + }) def done(self): - self.warrior.complete_task(self['uuid']) + self.warrior.execute_command([self['id'], 'done']) + + def save(self): + args = [self['id'], 'modify'] if self['id'] else ['add'] + args.extend(self._get_modified_fields_as_args()) + self.warrior.execute_command(args) + self._modified_fields.clear() - def save(self, delete_first=True): - if self['uuid'] and delete_first: - self.delete() - if not self['uuid'] or delete_first: - self.regenerate_uuid() - self.warrior.import_tasks([self._data]) + def _get_modified_fields_as_args(self): + args = [] + for field in self._modified_fields: + args.append('{}:{}'.format(field, self._data[field])) + return args __repr__ = __unicode__ -class TaskWarrior(object): +class TaskFilter(object): + """ + A set of parameters to filter the task list with. + """ + + def __init__(self, filter_params=[]): + self.filter_params = filter_params + + def add_filter(self, filter_str): + self.filter_params.append(filter_str) + + def add_filter_param(self, key, value): + key = key.replace('__', '.') + self.filter_params.append('{0}:{1}'.format(key, value)) + + def get_filter_params(self): + return [f for f in self.filter_params if f] + + def clone(self): + c = self.__class__() + c.filter_params = list(self.filter_params) + return c + + +class TaskQuerySet(object): + """ + Represents a lazy lookup for a task objects. + """ + + def __init__(self, warrior=None, filter_obj=None): + self.warrior = warrior + self._result_cache = None + self.filter_obj = filter_obj or TaskFilter() + def __deepcopy__(self, memo): + """ + Deep copy of a QuerySet doesn't populate the cache + """ + obj = self.__class__() + for k, v in self.__dict__.items(): + if k in ('_iter', '_result_cache'): + obj.__dict__[k] = None + else: + obj.__dict__[k] = copy.deepcopy(v, memo) + return obj + + def __repr__(self): + data = list(self[:REPR_OUTPUT_SIZE + 1]) + if len(data) > REPR_OUTPUT_SIZE: + data[-1] = "...(remaining elements truncated)..." + return repr(data) + + def __len__(self): + if self._result_cache is None: + self._result_cache = list(self) + return len(self._result_cache) + + def __iter__(self): + if self._result_cache is None: + self._result_cache = self._execute() + return iter(self._result_cache) + + def __getitem__(self, k): + if self._result_cache is None: + self._result_cache = list(self) + return self._result_cache.__getitem__(k) + + def __bool__(self): + if self._result_cache is not None: + return bool(self._result_cache) + try: + next(iter(self)) + except StopIteration: + return False + return True + + def __nonzero__(self): + return type(self).__bool__(self) + + def _clone(self, klass=None, **kwargs): + if klass is None: + klass = self.__class__ + filter_obj = self.filter_obj.clone() + c = klass(warrior=self.warrior, filter_obj=filter_obj) + c.__dict__.update(kwargs) + return c + + def _execute(self): + """ + Fetch the tasks which match the current filters. + """ + return self.warrior.filter_tasks(self.filter_obj) + + def all(self): + """ + Returns a new TaskQuerySet that is a copy of the current one. + """ + return self._clone() + + def pending(self): + return self.filter(status=PENDING) + + def completed(self): + return self.filter(status=COMPLETED) + + def filter(self, *args, **kwargs): + """ + Returns a new TaskQuerySet with the given filters added. + """ + clone = self._clone() + for f in args: + clone.filter_obj.add_filter(f) + for key, value in kwargs.items(): + clone.filter_obj.add_filter_param(key, value) + return clone + + def get(self, **kwargs): + """ + Performs the query and returns a single object matching the given + keyword arguments. + """ + clone = self.filter(**kwargs) + num = len(clone) + if num == 1: + return clone._result_cache[0] + if not num: + raise Task.DoesNotExist( + 'Task matching query does not exist. ' + 'Lookup parameters were {0}'.format(kwargs)) + raise ValueError( + 'get() returned more than one Task -- it returned {0}! ' + 'Lookup parameters were {1}'.format(num, kwargs)) + + +class TaskWarrior(object): def __init__(self, data_location='~/.task', create=True): - if not os.path.exists(data_location): + data_location = os.path.expanduser(data_location) + if create and not os.path.exists(data_location): os.makedirs(data_location) self.config = { 'data.location': os.path.expanduser(data_location), } + self.tasks = TaskQuerySet(self) + + def _get_command_args(self, args, config_override={}): + command_args = ['task', 'rc:/'] + config = self.config.copy() + config.update(config_override) + for item in config.items(): + command_args.append('rc.{0}={1}'.format(*item)) + command_args.extend(map(str, args)) + return command_args - def _generate_command(self, command): - args = ['task', 'rc:/'] - for item in self.config.items(): - args.append('rc.{0}={1}'.format(*item)) - args.append(command) - return ' '.join(args) - - def _execute(self, command): - p = subprocess.Popen(self._generate_command(command), shell=True, - stdout=subprocess.PIPE, stderr=subprocess.PIPE) - stdout, stderr = p.communicate() + def execute_command(self, args, config_override={}): + 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() for x in p.communicate()] if p.returncode: - raise TaskWarriorException(stderr.strip()) + if stderr.strip(): + error_msg = stderr.strip().splitlines()[-1] + else: + error_msg = stdout.strip() + raise TaskWarriorException(error_msg) return stdout.strip().split('\n') - def get_tasks(self, project=None, status=PENDING): - command = 'export status:{0}'.format(status) - if project is not None: - command += ' project:{0}'.format(project) + def filter_tasks(self, filter_obj): + args = ['export', '--'] + filter_obj.get_filter_params() tasks = [] - for line in self._execute(command): + for line in self.execute_command(args): if line: - tasks.append(Task(self, json.loads(line.strip(',')))) + data = line.strip(',') + try: + tasks.append(Task(self, json.loads(data))) + except ValueError: + raise TaskWarriorException('Invalid JSON: %s' % data) return tasks - def get_task(self, task_id): - command = '{0} export'.format(task_id) - return Task(self, json.loads(self._execute(command)[0])) - - def add_task(self, description, project=None): - args = ['add', description] - if project is not None: - args.append('project:{0}'.format(project)) - self._execute(' '.join(args)) - - def delete_task(self, task_id): - self._execute('{0} rc.confirmation:no delete'.format(task_id)) - - def complete_task(self, task_id): - self._execute('{0} done'.format(task_id)) + def merge_with(self, path, push=False): + path = path.rstrip('/') + '/' + self.execute_command(['merge', path], config_override={ + 'merge.autopush': 'yes' if push else 'no', + }) - def import_tasks(self, tasks): - fd, path = tempfile.mkstemp() - with open(path, 'w') as f: - f.write(json.dumps(tasks)) - self._execute('import {0}'.format(path)) + def undo(self): + self.execute_command(['undo'], config_override={ + 'confirmation': 'no', + })