import abc
+import json
import os
import re
import subprocess
+from tasklib.filters import TaskWarriorFilter
+from tasklib.serializing import local_zone
+
+DATE_FORMAT_CALC = '%Y-%m-%dT%H:%M:%S'
VERSION_2_1_0 = six.u('2.1.0')
VERSION_2_2_0 = six.u('2.2.0')
class Backend(object):
+ @abc.abstractproperty
+ def filter_class(self):
+ """Returns the TaskFilter class used by this backend"""
+ pass
+
@abc.abstractmethod
def filter_tasks(self, filter_obj):
"""Returns a list of Task objects matching the given filter"""
def complete_task(self, task):
pass
+ @abc.abstractmethod
+ def refresh_task(self, task, after_save=False):
+ """
+ Refreshes the given task. Returns new data dict with serialized
+ attributes.
+ """
+ pass
+
+ @abc.abstractmethod
+ def annotate_task(self, task, annotation):
+ pass
+
+ @abc.abstractmethod
+ def denotate_task(self, task, annotation):
+ pass
+
@abc.abstractmethod
def sync(self):
"""Syncs the backend database with the taskd server"""
pass
+ def convert_datetime_string(self, value):
+ """
+ Converts TW syntax datetime string to a localized datetime
+ object. This method is not mandatory.
+ """
+ raise NotImplemented
+
class TaskWarriorException(Exception):
pass
stdout, stderr = [x.decode('utf-8') for x in p.communicate()]
return stdout.strip('\n')
+ def _get_modified_task_fields_as_args(self, task):
+ args = []
+
+ def add_field(field):
+ # Add the output of format_field method to args list (defaults to
+ # field:value)
+ serialized_value = task._serialize(field, task._data[field])
+
+ # Empty values should not be enclosed in quotation marks, see
+ # TW-1510
+ if serialized_value is '':
+ escaped_serialized_value = ''
+ else:
+ escaped_serialized_value = six.u("'{0}'").format(serialized_value)
+
+ format_default = lambda: six.u("{0}:{1}").format(field,
+ escaped_serialized_value)
+
+ format_func = getattr(self, 'format_{0}'.format(field),
+ format_default)
+
+ args.append(format_func(task))
+
+ # If we're modifying saved task, simply pass on all modified fields
+ if task.saved:
+ for field in task._modified_fields:
+ add_field(field)
+ # For new tasks, pass all fields that make sense
+ else:
+ for field in task._data.keys():
+ if field in task.read_only_fields:
+ continue
+ add_field(field)
+
+ return args
+
+ def format_depends(self, task):
+ # 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 = task._original_data.get('depends', set())
+
+ added = self['depends'] - old_dependencies
+ removed = old_dependencies - self['depends']
+
+ # Removed dependencies need to be prefixed with '-'
+ return 'depends:' + ','.join(
+ [t['uuid'] for t in added] +
+ ['-' + t['uuid'] for t in removed]
+ )
+
+ def format_description(self, task):
+ # Task version older than 2.4.0 ignores first word of the
+ # task description if description: prefix is used
+ if self.version < VERSION_2_4_0:
+ return task._data['description']
+ else:
+ return six.u("description:'{0}'").format(task._data['description'] or '')
+
+ def convert_datetime_string(self, value):
+
+ if self.version >= VERSION_2_4_0:
+ # For strings, use 'task calc' to evaluate the string to datetime
+ # available since TW 2.4.0
+ args = value.split()
+ result = self.execute_command(['calc'] + args)
+ naive = datetime.datetime.strptime(result[0], DATE_FORMAT_CALC)
+ localized = local_zone.localize(naive)
+ else:
+ raise ValueError("Provided value could not be converted to "
+ "datetime, its type is not supported: {}"
+ .format(type(value)))
+
+ @property
+ def filter_class(self):
+ return TaskWarriorFilter
+
+ # Public interface
+
def get_config(self):
raw_output = self.execute_command(
['show'],
"""Save a task into TaskWarrior database using add/modify call"""
args = [task['uuid'], 'modify'] if task.saved else ['add']
- args.extend(task._get_modified_fields_as_args())
+ args.extend(self._get_modified_task_fields_as_args(task))
output = self.execute_command(args)
# Parse out the new ID, if the task is being added for the first time
self.execute_command([task['uuid'], 'done'])
+ def annotate_task(self, task, annotation):
+ args = [task['uuid'], 'annotate', annotation]
+ self.execute_command(args)
+
+ def denotate_task(self, task, annotation):
+ args = [task['uuid'], 'denotate', annotation]
+ self.execute_command(args)
+
+ def refresh_task(self, task, after_save=False):
+ # 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 = [task['uuid'] or task['id'], 'export']
+ output = self.execute_command(args)
+
+ def valid(output):
+ return len(output) == 1 and output[0].startswith('{')
+
+ # For older TW versions attempt to uniquely locate the task
+ # using the data we have if it has been just saved.
+ # This can happen when adding a completed task on older TW versions.
+ if (not valid(output) and self.version < VERSION_2_4_5
+ and after_save):
+
+ # Make a copy, removing ID and UUID. It's most likely invalid
+ # (ID 0) if it failed to match a unique task.
+ data = copy.deepcopy(task._data)
+ data.pop('id', None)
+ data.pop('uuid', None)
+
+ taskfilter = self.filter_class(self)
+ for key, value in data.items():
+ taskfilter.add_filter_param(key, value)
+
+ output = self.execute_command(['export', '--'] +
+ taskfilter.get_filter_params())
+
+ # If more than 1 task has been matched still, raise an exception
+ if not valid(output):
+ raise TaskWarriorException(
+ "Unique identifiers {0} with description: {1} matches "
+ "multiple tasks: {2}".format(
+ task['uuid'] or task['id'], task['description'], output)
+ )
+
+ return json.loads(output[0])
+
+ def sync(self):
+ self.execute_command(['sync'])
projects / etc / taskwarrior.git / blobdiff