backend: Allow single character config values

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

diff --git a/tasklib/backends.py b/tasklib/backends.py
index 0fe3f985f518462cd955796f7301987047d6e128..1e1b8c48dc945c9f9a85c5677c1af0c5b55ccd36 100644 (file)
--- a/tasklib/backends.py
+++ b/tasklib/backends.py
@@ -7,9 +7,8 @@ import os
 import re
 import six
 import subprocess
 import re
 import six
 import subprocess

-import copy

 
 

-from .task import Task, TaskQuerySet
+from .task import Task, TaskQuerySet, ReadOnlyDictView

 from .filters import TaskWarriorFilter
 from .serializing import local_zone
 
 from .filters import TaskWarriorFilter
 from .serializing import local_zone
 


@@ -17,6 +16,7 @@ DATE_FORMAT_CALC = '%Y-%m-%dT%H:%M:%S'
 
 logger = logging.getLogger(__name__)
 
 
 logger = logging.getLogger(__name__)
 

+

 class Backend(object):
 
     @abc.abstractproperty
 class Backend(object):
 
     @abc.abstractproperty


@@ -75,7 +75,7 @@ class Backend(object):
         Converts TW syntax datetime string to a localized datetime
         object. This method is not mandatory.
         """
         Converts TW syntax datetime string to a localized datetime
         object. This method is not mandatory.
         """

-        raise NotImplemented
+        raise NotImplementedError

 
 
 class TaskWarriorException(Exception):
 
 
 class TaskWarriorException(Exception):


@@ -102,8 +102,9 @@ class TaskWarrior(Backend):
         if not os.path.exists(self.taskrc_location):
             self.taskrc_location = '/'
 
         if not os.path.exists(self.taskrc_location):
             self.taskrc_location = '/'
 

+        self._config = None

         self.version = self._get_version()
         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
             'confirmation': 'no',
             'dependency.confirmation': 'no',  # See TW-1483 or taskrc man page
             'recurrence.confirmation': 'no',  # Necessary for modifying R tasks


@@ -121,24 +122,27 @@ class TaskWarrior(Backend):
             data_location = os.path.expanduser(data_location)
             if create and not os.path.exists(data_location):
                 os.makedirs(data_location)
             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)]
 
         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.append('rc.{0}={1}'.format(*item))

-        command_args.extend(map(six.text_type, args))
+        command_args.extend([
+            x.decode('utf-8') if isinstance(x, six.binary_type)
+            else six.text_type(x) for x in args
+        ])

         return command_args
 
     def _get_version(self):
         p = subprocess.Popen(
         return command_args
 
     def _get_version(self):
         p = subprocess.Popen(

-                ['task', '--version'],
-                stdout=subprocess.PIPE,
-                stderr=subprocess.PIPE)
+            ['task', '--version'],
+            stdout=subprocess.PIPE,
+            stderr=subprocess.PIPE)

         stdout, stderr = [x.decode('utf-8') for x in p.communicate()]
         return stdout.strip('\n')
 
         stdout, stderr = [x.decode('utf-8') for x in p.communicate()]
         return stdout.strip('\n')
 


@@ -155,10 +159,11 @@ class TaskWarrior(Backend):
             if serialized_value is '':
                 escaped_serialized_value = ''
             else:
             if serialized_value is '':
                 escaped_serialized_value = ''
             else:

-                escaped_serialized_value = six.u("'{0}'").format(serialized_value)
+                escaped_serialized_value = six.u("'{0}'").format(
+                    serialized_value)

 
 

-            format_default = lambda task: six.u("{0}:{1}").format(field,
-                                                      escaped_serialized_value)
+            format_default = lambda task: six.u("{0}:{1}").format(
+                field, escaped_serialized_value)

 
             format_func = getattr(self, 'format_{0}'.format(field),
                                   format_default)
 
             format_func = getattr(self, 'format_{0}'.format(field),
                                   format_default)


@@ -169,11 +174,17 @@ class TaskWarrior(Backend):
         if task.saved:
             for field in task._modified_fields:
                 add_field(field)
         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():
         # For new tasks, pass all fields that make sense
         else:
             for field in task._data.keys():

+                # We cannot set stuff that's read only (ID, UUID, ..)

                 if field in task.read_only_fields:
                     continue
                 if field in task.read_only_fields:
                     continue

+                # We do not want to do field deletion for new tasks
+                if task._data[field] is None:
+                    continue
+                # Otherwise we're fine

                 add_field(field)
 
         return args
                 add_field(field)
 
         return args


@@ -193,9 +204,9 @@ class TaskWarrior(Backend):
 
         # Removed dependencies need to be prefixed with '-'
         return 'depends:' + ','.join(
 
         # Removed dependencies need to be prefixed with '-'
         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 format_description(self, task):
         # Task version older than 2.4.0 ignores first word of the
 
     def format_description(self, task):
         # Task version older than 2.4.0 ignores first word of the


@@ -227,27 +238,37 @@ class TaskWarrior(Backend):
 
     # Public interface
 
 
     # Public interface
 

-    def get_config(self):
+    @property
+    def config(self):
+        # First, check if memoized information is available
+        if self._config:
+            return self._config
+
+        # If not, fetch the config using the 'show' command

         raw_output = self.execute_command(
         raw_output = self.execute_command(

-                ['show'],
-                config_override={'verbose': 'nothing'}
-            )
+            ['show'],
+            config_override={'verbose': 'nothing'}
+        )

 
         config = dict()
 
         config = dict()

-        config_regex = re.compile(r'^(?P<key>[^\s]+)\s+(?P<value>[^\s].+$)')
+        config_regex = re.compile(r'^(?P<key>[^\s]+)\s+(?P<value>[^\s].*$)')

 
         for line in raw_output:
             match = config_regex.match(line)
             if match:
                 config[match.group('key')] = match.group('value').strip()
 
 
         for line in raw_output:
             match = config_regex.match(line)
             if match:
                 config[match.group('key')] = match.group('value').strip()
 

-        return config
+        # Memoize the config dict
+        self._config = ReadOnlyDictView(config)
+
+        return self._config

 
     def execute_command(self, args, config_override=None, allow_failure=True,
                         return_all=False):
         command_args = self._get_command_args(
             args, config_override=config_override)
 
     def execute_command(self, args, config_override=None, allow_failure=True,
                         return_all=False):
         command_args = self._get_command_args(
             args, config_override=config_override)

-        logger.debug(' '.join(command_args))
+        logger.debug(u' '.join(command_args))
+

         p = subprocess.Popen(command_args, stdout=subprocess.PIPE,
                              stderr=subprocess.PIPE)
         stdout, stderr = [x.decode('utf-8') for x in p.communicate()]
         p = subprocess.Popen(command_args, stdout=subprocess.PIPE,
                              stderr=subprocess.PIPE)
         stdout, stderr = [x.decode('utf-8') for x in p.communicate()]


@@ -256,6 +277,7 @@ class TaskWarrior(Backend):
                 error_msg = stderr.strip()
             else:
                 error_msg = stdout.strip()
                 error_msg = stderr.strip()
             else:
                 error_msg = stdout.strip()

+            error_msg += u'\nCommand used: ' + u' '.join(command_args)

             raise TaskWarriorException(error_msg)
 
         # Return all whole triplet only if explicitly asked for
             raise TaskWarriorException(error_msg)
 
         # Return all whole triplet only if explicitly asked for


@@ -287,7 +309,7 @@ class TaskWarrior(Backend):
 
     def filter_tasks(self, filter_obj):
         self.enforce_recurrence()
 
     def filter_tasks(self, filter_obj):
         self.enforce_recurrence()

-        args = ['export', '--'] + filter_obj.get_filter_params()
+        args = ['export'] + filter_obj.get_filter_params()

         tasks = []
         for line in self.execute_command(args):
             if line:
         tasks = []
         for line in self.execute_command(args):
             if line:


@@ -312,8 +334,10 @@ class TaskWarrior(Backend):
             id_lines = [l for l in output if l.startswith('Created task ')]
 
             # Complain loudly if it seems that more tasks were created
             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:
+            # Should not happen.
+            # Expected output: Created task 1.
+            #                  Created task 1 (recurrence template).
+            if len(id_lines) != 1 or len(id_lines[0].split(' ')) not in (3, 5):

                 raise TaskWarriorException("Unexpected output when creating "
                                            "task: %s" % '\n'.join(id_lines))
 
                 raise TaskWarriorException("Unexpected output when creating "
                                            "task: %s" % '\n'.join(id_lines))
 


@@ -381,15 +405,15 @@ class TaskWarrior(Backend):
             for key, value in data.items():
                 taskfilter.add_filter_param(key, value)
 
             for key, value in data.items():
                 taskfilter.add_filter_param(key, value)
 

-            output = self.execute_command(['export', '--'] +
-                taskfilter.get_filter_params())
+            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(
 
         # 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)
+                    task['uuid'] or task['id'], task['description'], output)

             )
 
         return json.loads(output[0])
             )
 
         return json.loads(output[0])