+import copy
import json
import os
import subprocess
import uuid
+REPR_OUTPUT_SIZE = 10
PENDING = 'pending'
class Task(object):
+ class DoesNotExist(Exception):
+ pass
+
def __init__(self, warrior, data={}):
self.warrior = warrior
self._data = data
__repr__ = __unicode__
+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, param, value):
+ self.filter_params += ((param, value),)
+
+ def get_filter_params(self):
+ return self.filter_params
+
+ def clone(self):
+ c = self.__class__()
+ c.filter_params = tuple(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._execute_filter(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 filter(self, **kwargs):
+ """
+ Returns a new TaskQuerySet with the given filters added.
+ """
+ clone = self._clone()
+ for param, value in kwargs.items():
+ clone.filter_obj.add_filter(param, 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):
+ DEFAULT_FILTERS = {
+ 'status': 'pending',
+ }
def __init__(self, data_location='~/.task', create=True):
if not os.path.exists(data_location):
self.config = {
'data.location': os.path.expanduser(data_location),
}
+ self.tasks = TaskQuerySet(self)
def _generate_command(self, command):
args = ['task', 'rc:/']
args.append(command)
return ' '.join(args)
- def _execute(self, command):
+ def _execute_command(self, command):
p = subprocess.Popen(self._generate_command(command), shell=True,
stdout=subprocess.PIPE, stderr=subprocess.PIPE)
stdout, stderr = p.communicate()
raise TaskWarriorException(stderr.strip())
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 _format_filter_kwarg(self, kwarg):
+ key, val = kwarg[0], kwarg[1]
+ key = key.replace('__', '.')
+ return '{0}:{1}'.format(key, val)
+
+ def _execute_filter(self, filter_obj):
+ filter_commands = ' '.join(map(self._format_filter_kwarg,
+ filter_obj.get_filter_params()))
+ command = '{0} export'.format(filter_commands)
tasks = []
- for line in self._execute(command):
+ for line in self._execute_command(command):
if line:
tasks.append(Task(self, json.loads(line.strip(','))))
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))
+ self._execute_command(' '.join(args))
def delete_task(self, task_id):
- self._execute('{0} rc.confirmation:no delete'.format(task_id))
+ self._execute_command('{0} rc.confirmation:no delete'.format(task_id))
def complete_task(self, task_id):
- self._execute('{0} done'.format(task_id))
+ self._execute_command('{0} done'.format(task_id))
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))
+ self._execute_command('import {0}'.format(path))
projects / etc / taskwarrior.git / blobdiff