import abc
+import json
import os
import re
import subprocess
+from tasklib.task import TaskFilter
VERSION_2_1_0 = six.u('2.1.0')
VERSION_2_2_0 = six.u('2.2.0')
class Backend(object):
+ filter_class = TaskFilter
+
@abc.abstractmethod
def filter_tasks(self, filter_obj):
"""Returns a list of Task objects matching the given filter"""
def stop_task(self, task):
pass
+ @abc.abstractmethod
+ 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
+class TaskWarriorException(Exception):
+ pass
+
+
class TaskWarrior(object):
def __init__(self, data_location=None, create=True, taskrc_location='~/.taskrc'):
self.taskrc_location = os.path.expanduser(taskrc_location)
if self.version < VERSION_2_4_2:
self.execute_command(['next'], allow_failure=False)
+ 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 undo(self):
+ self.execute_command(['undo'])
+
+ # Backend interface implementation
+
def filter_tasks(self, filter_obj):
self.enforce_recurrence()
args = ['export', '--'] + filter_obj.get_filter_params()
raise TaskWarriorException('Invalid JSON: %s' % data)
return tasks
- 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 save_task(self, task):
+ """Save a task into TaskWarrior database using add/modify call"""
- def undo(self):
- self.execute_command(['undo'])
+ args = [task['uuid'], 'modify'] if task.saved else ['add']
+ args.extend(task._get_modified_fields_as_args())
+ output = self.execute_command(args)
+
+ # Parse out the new ID, if the task is being added for the first time
+ if not task.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
+ identifier = id_lines[0].split(' ')[2].rstrip('.')
+
+ # Identifier can be either ID or UUID for completed tasks
+ try:
+ task._data['id'] = int(identifier)
+ except ValueError:
+ task._data['uuid'] = identifier
+
+ # Refreshing is very important here, as not only modification time
+ # is updated, but arbitrary attribute may have changed due hooks
+ # altering the data before saving
+ task.refresh(after_save=True)
+
+ def delete_task(self, task):
+ self.execute_command([task['uuid'], 'delete'])
+
+ def start_task(self, task):
+ self.execute_command([task['uuid'], 'start'])
+
+ def stop_task(self, task):
+ self.execute_command([task['uuid'], 'stop'])
+
+ def complete_task(self, task):
+ # Older versions of TW do not stop active task at completion
+ if self.version < VERSION_2_4_0 and task.active:
+ task.stop()
+
+ self.execute_command([task['uuid'], 'done'])
+
+ 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