+from __future__ import print_function
+import copy
+import datetime
import json
+import logging
import os
+import six
import subprocess
-import tempfile
-import uuid
-
+DATE_FORMAT = '%Y%m%dT%H%M%SZ'
+REPR_OUTPUT_SIZE = 10
PENDING = 'pending'
+COMPLETED = 'completed'
+
+VERSION_2_1_0 = six.u('2.1.0')
+VERSION_2_2_0 = six.u('2.2.0')
+VERSION_2_3_0 = six.u('2.3.0')
+VERSION_2_4_0 = six.u('2.4.0')
+
+logger = logging.getLogger(__name__)
class TaskWarriorException(Exception):
pass
-class Task(object):
+class TaskResource(object):
+ read_only_fields = []
- def __init__(self, warrior, data={}):
- self.warrior = warrior
+ def _load_data(self, data):
self._data = data
+ # We need to use a copy for original data, so that changes
+ # are not propagated
+ self._original_data = data.copy()
def __getitem__(self, key):
- return self._data.get(key)
+ # This is a workaround to make TaskResource non-iterable
+ # over simple index-based iteration
+ try:
+ int(key)
+ raise StopIteration
+ except ValueError:
+ pass
+
+ return self._deserialize(key, 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)
+
+ def __str__(self):
+ s = six.text_type(self.__unicode__())
+ if not six.PY3:
+ s = s.encode('utf-8')
+ return s
+
+ def __repr__(self):
+ return str(self)
+
+
+class TaskAnnotation(TaskResource):
+ read_only_fields = ['entry', 'description']
+
+ def __init__(self, task, data={}):
+ self.task = task
+ self._load_data(data)
+
+ def deserialize_entry(self, data):
+ return datetime.datetime.strptime(data, DATE_FORMAT) if data else None
- def __setitem__(self, key, val):
- self._data[key] = val
+ 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._data.get('description')
+ return self['description']
+
+ __repr__ = __unicode__
+
+
+class Task(TaskResource):
+ read_only_fields = ['id', 'entry', 'urgency', 'uuid', 'modified']
+
+ class DoesNotExist(Exception):
+ pass
+
+ class CompletedTask(Exception):
+ """
+ Raised when the operation cannot be performed on the completed task.
+ """
+ pass
- def regenerate_uuid(self):
- self['uuid'] = str(uuid.uuid4())
+ class DeletedTask(Exception):
+ """
+ Raised when the operation cannot be performed on the deleted task.
+ """
+ pass
+
+ class NotSaved(Exception):
+ """
+ Raised when the operation cannot be performed on the task, because
+ it has not been saved to TaskWarrior yet.
+ """
+ pass
+
+ def __init__(self, warrior, data={}, **kwargs):
+ self.warrior = warrior
+
+ # 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
+
+ # Rather unfortunate syntax due to python2.6 comaptiblity
+ 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']
+
+ def __eq__(self, other):
+ if self['uuid'] and other['uuid']:
+ # For saved Tasks, just define equality by equality of uuids
+ return self['uuid'] == other['uuid']
+ else:
+ # If the tasks are not saved, compare the actual instances
+ return id(self) == id(other)
+
+
+ def __hash__(self):
+ if self['uuid']:
+ # For saved Tasks, just define equality by equality of uuids
+ return self['uuid'].__hash__()
+ else:
+ # If the tasks are not saved, return hash of instance id
+ return id(self).__hash__()
+
+ @property
+ def _modified_fields(self):
+ writable_fields = set(self._data.keys()) - set(self.read_only_fields)
+ for key in writable_fields:
+ if self._data.get(key) != self._original_data.get(key):
+ yield key
+
+ @property
+ def completed(self):
+ return self['status'] == six.text_type('completed')
+
+ @property
+ def deleted(self):
+ return self['status'] == six.text_type('deleted')
+
+ @property
+ def waiting(self):
+ return self['status'] == six.text_type('waiting')
+
+ @property
+ def pending(self):
+ return self['status'] == six.text_type('pending')
+
+ @property
+ 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:
+ if not task.saved:
+ 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)
+
+ def format_depends(self):
+ # We need to generate added and removed dependencies list,
+ # since Taskwarrior does not accept redefining dependencies.
+
+ # This cannot be part of serialize_depends, since we need
+ # 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)
+
+ added = self['depends'] - old_dependencies
+ removed = old_dependencies - self['depends']
+
+ # Removed dependencies need to be prefixed with '-'
+ return ','.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 delete(self):
- self.warrior.delete_task(self['uuid'])
+ if not self.saved:
+ raise Task.NotSaved("Task needs to be saved before it can be deleted")
+
+ # Refresh the status, and raise exception if the task is deleted
+ self.refresh(only_fields=['status'])
+
+ if self.deleted:
+ raise Task.DeletedTask("Task was already deleted")
+
+ self.warrior.execute_command([self['uuid'], 'delete'], config_override={
+ 'confirmation': 'no',
+ })
+
+ # Refresh the status again, so that we have updated info stored
+ self.refresh(only_fields=['status'])
+
def done(self):
- self.warrior.complete_task(self['uuid'])
+ if not self.saved:
+ raise Task.NotSaved("Task needs to be saved before it can be completed")
- 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])
+ # Refresh, and raise exception if task is already completed/deleted
+ self.refresh(only_fields=['status'])
- __repr__ = __unicode__
+ if self.completed:
+ raise Task.CompletedTask("Cannot complete a completed task")
+ elif self.deleted:
+ raise Task.DeletedTask("Deleted task cannot be completed")
+ self.warrior.execute_command([self['uuid'], 'done'])
-class TaskWarrior(object):
- DEFAULT_FILTERS = {
- 'status': 'pending',
- }
+ # Refresh the status again, so that we have updated info stored
+ self.refresh(only_fields=['status'])
+
+ def save(self):
+ args = [self['uuid'], 'modify'] if self.saved else ['add']
+ args.extend(self._get_modified_fields_as_args())
+ output = self.warrior.execute_command(args)
+
+ # Parse out the new ID, if the task is being added for the first time
+ if not self.saved:
+ id_lines = [l for l in output if l.startswith('Created task ')]
+
+ # Complain loudly if it seems that more tasks were created
+ # Should not happen
+ if len(id_lines) != 1 or len(id_lines[0].split(' ')) != 3:
+ raise TaskWarriorException("Unexpected output when creating "
+ "task: %s" % '\n'.join(id_lines))
+
+ # Circumvent the ID storage, since ID is considered read-only
+ self._data['id'] = int(id_lines[0].split(' ')[2].rstrip('.'))
+
+ self.refresh()
+
+ def add_annotation(self, annotation):
+ if not self.saved:
+ raise Task.NotSaved("Task needs to be saved to add annotation")
+
+ args = [self['uuid'], 'annotate', annotation]
+ self.warrior.execute_command(args)
+ self.refresh(only_fields=['annotations'])
+
+ def remove_annotation(self, annotation):
+ if not self.saved:
+ raise Task.NotSaved("Task needs to be saved to add annotation")
+
+ if isinstance(annotation, TaskAnnotation):
+ annotation = annotation['description']
+ args = [self['uuid'], 'denotate', annotation]
+ self.warrior.execute_command(args)
+ self.refresh(only_fields=['annotations'])
+
+ def _get_modified_fields_as_args(self):
+ 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 ''))
+
+ # If we're modifying saved task, simply pass on all modified fields
+ if self.saved:
+ for field in self._modified_fields:
+ add_field(field)
+ # For new tasks, pass all fields that make sense
+ else:
+ for field in self._data.keys():
+ if field in self.read_only_fields:
+ continue
+ add_field(field)
+
+ return args
+
+ def refresh(self, only_fields=[]):
+ # Raise error when trying to refresh a task that has not been saved
+ if not self.saved:
+ raise Task.NotSaved("Task needs to be saved to be refreshed")
+
+ # We need to use ID as backup for uuid here for the refreshes
+ # of newly saved tasks. Any other place in the code is fine
+ # with using UUID only.
+ args = [self['uuid'] or self['id'], 'export']
+ new_data = json.loads(self.warrior.execute_command(args)[0])
+ 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)
+ 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()
+
+
+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('__', '.')
+
+ # Replace the value with empty string, since that is the
+ # convention in TW for empty values
+ value = value if value is not None else ''
+
+ # 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))
+
+ 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)
+ self.version = self._get_version()
- 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 _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 _get_version(self):
+ p = subprocess.Popen(
+ ['task', '--version'],
+ stdout=subprocess.PIPE,
+ stderr=subprocess.PIPE)
+ stdout, stderr = [x.decode('utf-8') for x in p.communicate()]
+ return stdout.strip('\n')
+
+ 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('utf-8') 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 _format_filter_kwarg(self, kwarg):
- key, val = kwarg[0], kwarg[1]
- if key in ['tag', 'tags']:
- key = 'tags.equal'
- key = key.replace('__', '.')
- return '{0}:{1}'.format(key, val)
-
- def get_tasks(self, **filter_kwargs):
- filters = self.DEFAULT_FILTERS
- filters.update(filter_kwargs)
- filter_commands = ' '.join(map(self._format_filter_kwarg,
- filters.items()))
- command = '{0} export'.format(filter_commands)
+ 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',
+ })
projects / etc / taskwarrior.git / blobdiff