Merge pull request #25 from tbabej/deserialized-data-dict

[etc/taskwarrior.git] / tasklib / task.py

diff --git a/tasklib/task.py b/tasklib/task.py
index 1bd3ce7030271709e937e01dc4447610bc916f76..f61fb056591c3afb22486ad62a30f78c586c8918 100644 (file)
--- a/tasklib/task.py
+++ b/tasklib/task.py
@@ -24,15 +24,98 @@ class TaskWarriorException(Exception):
     pass
 
 
     pass
 
 

-class TaskResource(object):
+class SerializingObject(object):
+    """
+    Common ancestor for TaskResource & TaskFilter, since they both
+    need to serialize arguments.
+    """
+
+    def _deserialize(self, key, value):
+        hydrate_func = getattr(self, 'deserialize_{0}'.format(key),
+                               lambda x: x if x != '' else None)
+        return hydrate_func(value)
+
+    def _serialize(self, key, value):
+        dehydrate_func = getattr(self, 'serialize_{0}'.format(key),
+                                 lambda x: x if x is not None else '')
+        return dehydrate_func(value)
+
+    def timestamp_serializer(self, date):
+        if not date:
+            return None
+        return date.strftime(DATE_FORMAT)
+
+    def timestamp_deserializer(self, date_str):
+        if not date_str:
+            return None
+        return datetime.datetime.strptime(date_str, DATE_FORMAT)
+
+    def serialize_entry(self, value):
+        return self.timestamp_serializer(value)
+
+    def deserialize_entry(self, value):
+        return self.timestamp_deserializer(value)
+
+    def serialize_modified(self, value):
+        return self.timestamp_serializer(value)
+
+    def deserialize_modified(self, value):
+        return self.timestamp_deserializer(value)
+
+    def serialize_due(self, value):
+        return self.timestamp_serializer(value)
+
+    def deserialize_due(self, value):
+        return self.timestamp_deserializer(value)
+
+    def serialize_scheduled(self, value):
+        return self.timestamp_serializer(value)
+
+    def deserialize_scheduled(self, value):
+        return self.timestamp_deserializer(value)
+
+    def serialize_until(self, value):
+        return self.timestamp_serializer(value)
+
+    def deserialize_until(self, value):
+        return self.timestamp_deserializer(value)
+
+    def serialize_wait(self, value):
+        return self.timestamp_serializer(value)
+
+    def deserialize_wait(self, value):
+        return self.timestamp_deserializer(value)
+
+    def deserialize_annotations(self, data):
+        return [TaskAnnotation(self, d) for d in data] if data else []
+
+    def serialize_tags(self, tags):
+        return ','.join(tags) if tags else ''
+
+    def deserialize_tags(self, tags):
+        if isinstance(tags, six.string_types):
+            return tags.split(',') if tags else []
+        return tags or []
+
+    def serialize_depends(self, cur_dependencies):
+        # 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)
+
+
+class TaskResource(SerializingObject):

     read_only_fields = []
 
     def _load_data(self, data):
     read_only_fields = []
 
     def _load_data(self, data):

-        self._data = data
+        self._data = dict((key, self._deserialize(key, value))
+                          for key, value in data.items())

         # We need to use a copy for original data, so that changes
         # We need to use a copy for original data, so that changes

-        # are not propagated. Shallow copy is alright, since data dict uses only
-        # primitive data types
-        self._original_data = data.copy()
+        # are not propagated.
+        self._original_data = copy.deepcopy(self._data)

 
     def _update_data(self, data, update_original=False):
         """
 
     def _update_data(self, data, update_original=False):
         """


@@ -40,11 +123,12 @@ class TaskResource(object):
         updates should already be serialized. If update_original is True, the
         original_data dict is updated as well.
         """
         updates should already be serialized. If update_original is True, the
         original_data dict is updated as well.
         """

-
-        self._data.update(data)
+        self._data.update(dict((key, self._deserialize(key, value))
+                               for key, value in data.items()))

 
         if update_original:
 
         if update_original:

-            self._original_data.update(data)
+            self._original_data = copy.deepcopy(self._data)
+

 
     def __getitem__(self, key):
         # This is a workaround to make TaskResource non-iterable
 
     def __getitem__(self, key):
         # This is a workaround to make TaskResource non-iterable


@@ -55,22 +139,15 @@ class TaskResource(object):
         except ValueError:
             pass
 
         except ValueError:
             pass
 

-        return self._deserialize(key, self._data.get(key))
+        if key not in self._data:
+            self._data[key] = self._deserialize(key, None)
+
+        return self._data.get(key)

 
     def __setitem__(self, key, value):
         if key in self.read_only_fields:
             raise RuntimeError('Field \'%s\' is read-only' % 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)
+        self._data[key] = value

 
     def __str__(self):
         s = six.text_type(self.__unicode__())
 
     def __str__(self):
         s = six.text_type(self.__unicode__())


@@ -89,18 +166,17 @@ class TaskAnnotation(TaskResource):
         self.task = task
         self._load_data(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']
 
     def remove(self):
         self.task.remove_annotation(self)
 
     def __unicode__(self):
         return self['description']
 

+    def __eq__(self, other):
+        # consider 2 annotations equal if they belong to the same task, and
+        # their data dics are the same
+        return self.task == other.task and self._data == other._data
+

     __repr__ = __unicode__
 
 
     __repr__ = __unicode__
 
 


@@ -132,6 +208,11 @@ class Task(TaskResource):
     def __init__(self, warrior, **kwargs):
         self.warrior = warrior
 
     def __init__(self, warrior, **kwargs):
         self.warrior = warrior
 

+        # Check that user is not able to set read-only value in __init__
+        for key in kwargs.keys():
+            if key in self.read_only_fields:
+                raise RuntimeError('Field \'%s\' is read-only' % key)
+

         # 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
         # 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


@@ -164,9 +245,21 @@ class Task(TaskResource):
     def _modified_fields(self):
         writable_fields = set(self._data.keys()) - set(self.read_only_fields)
         for key in writable_fields:
     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):
+            new_value = self._data.get(key)
+            old_value = self._original_data.get(key)
+
+            # Make sure not to mark data removal as modified field if the
+            # field originally had some empty value
+            if key in self._data and not new_value and not old_value:
+                continue
+
+            if new_value != old_value:

                 yield key
 
                 yield key
 

+    @property
+    def _is_modified(self):
+        return bool(list(self._modified_fields))
+

     @property
     def completed(self):
         return self['status'] == six.text_type('completed')
     @property
     def completed(self):
         return self['status'] == six.text_type('completed')


@@ -187,16 +280,6 @@ class Task(TaskResource):
     def saved(self):
         return self['uuid'] is not None or self['id'] is not None
 
     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:
     def serialize_depends(self, cur_dependencies):
         # Check that all the tasks are saved
         for task in cur_dependencies:


@@ -204,13 +287,7 @@ class Task(TaskResource):
                 raise Task.NotSaved('Task \'%s\' needs to be saved before '
                                     'it can be set as dependency.' % task)
 
                 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)
+        return super(Task, self).serialize_depends(cur_dependencies)

 
     def format_depends(self):
         # We need to generate added and removed dependencies list,
 
     def format_depends(self):
         # We need to generate added and removed dependencies list,


@@ -220,28 +297,24 @@ class Task(TaskResource):
         # to keep a list of all depedencies in the _data dictionary,
         # not just currently added/removed ones
 
         # 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)
+        old_dependencies = self._original_data.get('depends', set())

 
         added = self['depends'] - old_dependencies
         removed = old_dependencies - self['depends']
 
         # Removed dependencies need to be prefixed with '-'
 
         added = self['depends'] - old_dependencies
         removed = old_dependencies - self['depends']
 
         # Removed dependencies need to be prefixed with '-'

-        return ','.join(
+        return 'depends:' + ','.join(

                 [t['uuid'] for t in added] +
                 ['-' + t['uuid'] for t in removed]
             )
 
                 [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 format_description(self):
+        # 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:
+            return self._data['description']
+        else:
+            return "description:'{0}'".format(self._data['description'] or '')

 
     def delete(self):
         if not self.saved:
 
     def delete(self):
         if not self.saved:


@@ -253,9 +326,7 @@ class Task(TaskResource):
         if self.deleted:
             raise Task.DeletedTask("Task was already deleted")
 
         if self.deleted:
             raise Task.DeletedTask("Task was already deleted")
 

-        self.warrior.execute_command([self['uuid'], 'delete'], config_override={
-            'confirmation': 'no',
-        })
+        self.warrior.execute_command([self['uuid'], 'delete'])

 
         # Refresh the status again, so that we have updated info stored
         self.refresh(only_fields=['status'])
 
         # Refresh the status again, so that we have updated info stored
         self.refresh(only_fields=['status'])


@@ -279,6 +350,9 @@ class Task(TaskResource):
         self.refresh(only_fields=['status'])
 
     def save(self):
         self.refresh(only_fields=['status'])
 
     def save(self):

+        if self.saved and not self._is_modified:
+            return
+

         args = [self['uuid'], 'modify'] if self.saved else ['add']
         args.extend(self._get_modified_fields_as_args())
         output = self.warrior.execute_command(args)
         args = [self['uuid'], 'modify'] if self.saved else ['add']
         args.extend(self._get_modified_fields_as_args())
         output = self.warrior.execute_command(args)


@@ -308,7 +382,7 @@ class Task(TaskResource):
 
     def remove_annotation(self, annotation):
         if not self.saved:
 
     def remove_annotation(self, annotation):
         if not self.saved:

-            raise Task.NotSaved("Task needs to be saved to add annotation")
+            raise Task.NotSaved("Task needs to be saved to remove annotation")

 
         if isinstance(annotation, TaskAnnotation):
             annotation = annotation['description']
 
         if isinstance(annotation, TaskAnnotation):
             annotation = annotation['description']


@@ -320,15 +394,16 @@ class Task(TaskResource):
         args = []
 
         def add_field(field):
         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 ''))
+            # Add the output of format_field method to args list (defaults to
+            # field:value)
+            serialized_value = self._serialize(field, self._data[field]) or ''
+            format_default = lambda: "{0}:{1}".format(
+                field,
+                "'{0}'".format(serialized_value) if serialized_value else ''
+            )
+            format_func = getattr(self, 'format_{0}'.format(field),
+                                  format_default)
+            args.append(format_func())

 
         # If we're modifying saved task, simply pass on all modified fields
         if self.saved:
 
         # If we're modifying saved task, simply pass on all modified fields
         if self.saved:


@@ -361,7 +436,7 @@ class Task(TaskResource):
             self._load_data(new_data)
 
 
             self._load_data(new_data)
 
 

-class TaskFilter(object):
+class TaskFilter(SerializingObject):

     """
     A set of parameters to filter the task list with.
     """
     """
     A set of parameters to filter the task list with.
     """


@@ -377,14 +452,23 @@ class TaskFilter(object):
 
         # Replace the value with empty string, since that is the
         # convention in TW for empty values
 
         # Replace the value with empty string, since that is the
         # convention in TW for empty values

-        value = value if value is not None else ''
+        attribute_key = key.split('.')[0]
+        value = self._serialize(attribute_key, value)

 
         # 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:
 
         # 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))
+            # Surround value with aphostrophes unless it's a empty string
+            value = "'%s'" % value if value else ''
+
+            # We enforce equality match by using 'is' (or 'none') modifier
+            # Without using this syntax, filter fails due to TW-1479
+            modifier = '.is' if value else '.none'
+            key = key + modifier if '.' not in key else key
+
+            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 get_filter_params(self):
         return [f for f in self.filter_params if f]


@@ -512,6 +596,8 @@ class TaskWarrior(object):
             os.makedirs(data_location)
         self.config = {
             'data.location': os.path.expanduser(data_location),
             os.makedirs(data_location)
         self.config = {
             'data.location': os.path.expanduser(data_location),

+            'confirmation': 'no',
+            'dependency.confirmation': 'no', # See TW-1483 or taskrc man page

         }
         self.tasks = TaskQuerySet(self)
         self.version = self._get_version()
         }
         self.tasks = TaskQuerySet(self)
         self.version = self._get_version()


@@ -569,6 +655,4 @@ class TaskWarrior(object):
         })
 
     def undo(self):
         })
 
     def undo(self):

-        self.execute_command(['undo'], config_override={
-            'confirmation': 'no',
-        })
+        self.execute_command(['undo'])