+from __future__ import print_function
import copy
import datetime
import json
import logging
import os
+import six
import subprocess
DATE_FORMAT = '%Y%m%dT%H%M%SZ'
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__)
pass
-class Task(object):
+class TaskResource(object):
+ read_only_fields = []
+
+ 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):
+ # 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 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']
+
+ __repr__ = __unicode__
+
+
+class Task(TaskResource):
+ read_only_fields = ['id', 'entry', 'urgency', 'uuid', 'modified']
class DoesNotExist(Exception):
pass
- def __init__(self, warrior, data={}):
+ class CompletedTask(Exception):
+ """
+ Raised when the operation cannot be performed on the completed task.
+ """
+ pass
+
+ 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
- self._data = data
- self._modified_fields = set()
+
+ # 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)
+ self._original_data.update(data)
def __unicode__(self):
return self['description']
- def __getitem__(self, key):
- hydrate_func = getattr(self, 'deserialize_{0}'.format(key),
- lambda x: x)
- return hydrate_func(self._data.get(key))
+ 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')
- 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)
+ @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):
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 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)
- 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
+ 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 ','.join(tags) if tags else ''
def delete(self):
- self.warrior.execute_command([self['id'], 'delete'], config_override={
+ 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.execute_command([self['id'], 'done'])
+ if not self.saved:
+ raise Task.NotSaved("Task needs to be saved before it can be completed")
+
+ # Refresh, and raise exception if task is already completed/deleted
+ self.refresh(only_fields=['status'])
+
+ 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'])
+
+ # Refresh the status again, so that we have updated info stored
+ self.refresh(only_fields=['status'])
def save(self):
- args = [self['id'], 'modify'] if self['id'] else ['add']
+ 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._modified_fields.clear()
+ 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 = []
- for field in self._modified_fields:
- args.append('{}:{}'.format(field, self._data[field]))
+
+ 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
- __repr__ = __unicode__
+ 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):
def add_filter_param(self, key, value):
key = key.replace('__', '.')
- self.filter_params.append('{0}:{1}'.format(key, value))
+
+ # 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]
class TaskWarrior(object):
def __init__(self, data_location='~/.task', create=True):
data_location = os.path.expanduser(data_location)
- if not os.path.exists(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 _get_command_args(self, args, config_override={}):
command_args = ['task', 'rc:/']
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 = p.communicate()
+ stdout, stderr = [x.decode('utf-8') for x in p.communicate()]
if p.returncode:
- error_msg = stderr.strip().splitlines()[-1]
+ if stderr.strip():
+ error_msg = stderr.strip().splitlines()[-1]
+ else:
+ error_msg = stdout.strip()
raise TaskWarriorException(error_msg)
return stdout.strip().split('\n')
tasks = []
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 merge_with(self, path, push=False):
projects / etc / taskwarrior.git / blobdiff