X-Git-Url: https://git.madduck.net/etc/taskwarrior.git/blobdiff_plain/a8a458c71b1a1f6e23fb734da35c349b14f5c462..3928be287cd1cd84db996b41125435c62e03339e:/tasklib/backends.py?ds=inline

diff --git a/tasklib/backends.py b/tasklib/backends.py
index 00b2210..b2038be 100644
--- a/tasklib/backends.py
+++ b/tasklib/backends.py
@@ -1,4 +1,5 @@
 import abc
+import copy
 import datetime
 import json
 import logging
@@ -102,8 +103,9 @@ class TaskWarrior(Backend):
         if not os.path.exists(self.taskrc_location):
             self.taskrc_location = '/'
 
+        self._config = None
         self.version = self._get_version()
-        self.config = {
+        self.overrides = {
             'confirmation': 'no',
             'dependency.confirmation': 'no',  # See TW-1483 or taskrc man page
             'recurrence.confirmation': 'no',  # Necessary for modifying R tasks
@@ -121,15 +123,15 @@ class TaskWarrior(Backend):
             data_location = os.path.expanduser(data_location)
             if create and not os.path.exists(data_location):
                 os.makedirs(data_location)
-            self.config['data.location'] = data_location
+            self.overrides['data.location'] = data_location
 
         self.tasks = TaskQuerySet(self)
 
     def _get_command_args(self, args, config_override=None):
         command_args = ['task', 'rc:{0}'.format(self.taskrc_location)]
-        config = self.config.copy()
-        config.update(config_override or dict())
-        for item in config.items():
+        overrides = self.overrides.copy()
+        overrides.update(config_override or dict())
+        for item in overrides.items():
             command_args.append('rc.{0}={1}'.format(*item))
         command_args.extend(map(six.text_type, args))
         return command_args
@@ -228,7 +230,13 @@ class TaskWarrior(Backend):
 
     # Public interface
 
-    def get_config(self):
+    @property
+    def config(self):
+        # First, check if memoized information is available
+        if self._config:
+            return copy.deepcopy(self._config)
+
+        # If not, fetch the config using the 'show' command
         raw_output = self.execute_command(
             ['show'],
             config_override={'verbose': 'nothing'}
@@ -242,7 +250,10 @@ class TaskWarrior(Backend):
             if match:
                 config[match.group('key')] = match.group('value').strip()
 
-        return config
+        # Memoize the config dict
+        self._config = config
+
+        return copy.deepcopy(config)
 
     def execute_command(self, args, config_override=None, allow_failure=True,
                         return_all=False):