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backends: Move TaskWarrior class into the backends file
[etc/taskwarrior.git] / tasklib / task.py
index ed89653eab7e593a396bcaa6720cc2266e859599..d4fc9b2d2a941fa13dea8955158951d5feef18d7 100644 (file)
@@ -5,26 +5,18 @@ import json
 import logging
 import os
 import pytz
-import re
 import six
 import sys
-import subprocess
 import tzlocal
 
+from backends import TaskWarrior
+
 DATE_FORMAT = '%Y%m%dT%H%M%SZ'
 DATE_FORMAT_CALC = '%Y-%m-%dT%H:%M:%S'
 REPR_OUTPUT_SIZE = 10
 PENDING = 'pending'
 COMPLETED = 'completed'
 
-VERSION_2_1_0 = six.u('2.1.0')
-VERSION_2_2_0 = six.u('2.2.0')
-VERSION_2_3_0 = six.u('2.3.0')
-VERSION_2_4_0 = six.u('2.4.0')
-VERSION_2_4_1 = six.u('2.4.1')
-VERSION_2_4_2 = six.u('2.4.2')
-VERSION_2_4_3 = six.u('2.4.3')
-
 logger = logging.getLogger(__name__)
 local_zone = tzlocal.get_localzone()
 
@@ -392,9 +384,9 @@ class TaskResource(SerializingObject):
 class TaskAnnotation(TaskResource):
     read_only_fields = ['entry', 'description']
 
-    def __init__(self, task, data={}):
+    def __init__(self, task, data=None):
         self.task = task
-        self._load_data(data)
+        self._load_data(data or dict())
         super(TaskAnnotation, self).__init__(task.warrior)
 
     def remove(self):
@@ -744,7 +736,7 @@ class Task(TaskResource):
 
         return args
 
-    def refresh(self, only_fields=[], after_save=False):
+    def refresh(self, only_fields=None, after_save=False):
         # Raise error when trying to refresh a task that has not been saved
         if not self.saved:
             raise Task.NotSaved("Task needs to be saved to be refreshed")
@@ -761,7 +753,7 @@ class Task(TaskResource):
         # 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.warrior.version < six.text_type(u'2.4.5')
+        if (not valid(output) and self.warrior.version < VERSION_2_4_5
                 and after_save):
 
             # Make a copy, removing ID and UUID. It's most likely invalid
@@ -798,8 +790,8 @@ class TaskFilter(SerializingObject):
     A set of parameters to filter the task list with.
     """
 
-    def __init__(self, warrior, filter_params=[]):
-        self.filter_params = filter_params
+    def __init__(self, warrior, filter_params=None):
+        self.filter_params = filter_params or []
         super(TaskFilter, self).__init__(warrior)
 
     def add_filter(self, filter_str):
@@ -826,8 +818,10 @@ class TaskFilter(SerializingObject):
 
             # 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
+            # which is, however, fixed in 2.4.5
+            if self.warrior.version < VERSION_2_4_5:
+                modifier = '.is' if value else '.none'
+                key = key + modifier if '.' not in key else key
 
             self.filter_params.append(six.u("{0}:{1}").format(key, value))
 
@@ -948,124 +942,3 @@ class TaskQuerySet(object):
         raise ValueError(
             'get() returned more than one Task -- it returned {0}! '
             'Lookup parameters were {1}'.format(num, kwargs))
-
-
-class TaskWarrior(object):
-    def __init__(self, data_location=None, create=True, taskrc_location='~/.taskrc'):
-        self.taskrc_location = os.path.expanduser(taskrc_location)
-
-        # If taskrc does not exist, pass / to use defaults and avoid creating
-        # dummy .taskrc file by TaskWarrior
-        if not os.path.exists(self.taskrc_location):
-            self.taskrc_location = '/'
-
-        self.version = self._get_version()
-        self.config = {
-            'confirmation': 'no',
-            'dependency.confirmation': 'no',  # See TW-1483 or taskrc man page
-            'recurrence.confirmation': 'no',  # Necessary for modifying R tasks
-
-            # Defaults to on since 2.4.5, we expect off during parsing
-            'json.array': 'off',
-
-            # 2.4.3 onwards supports 0 as infite bulk, otherwise set just
-            # arbitrary big number which is likely to be large enough
-            'bulk': 0 if self.version >= VERSION_2_4_3 else 100000,
-        }
-
-        # Set data.location override if passed via kwarg
-        if data_location is not None:
-            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.tasks = TaskQuerySet(self)
-
-    def _get_command_args(self, args, config_override={}):
-        command_args = ['task', 'rc:{0}'.format(self.taskrc_location)]
-        config = self.config.copy()
-        config.update(config_override)
-        for item in config.items():
-            command_args.append('rc.{0}={1}'.format(*item))
-        command_args.extend(map(six.text_type, args))
-        return command_args
-
-    def _get_version(self):
-        p = subprocess.Popen(
-                ['task', '--version'],
-                stdout=subprocess.PIPE,
-                stderr=subprocess.PIPE)
-        stdout, stderr = [x.decode('utf-8') for x in p.communicate()]
-        return stdout.strip('\n')
-
-    def get_config(self):
-        raw_output = self.execute_command(
-                ['show'],
-                config_override={'verbose': 'nothing'}
-            )
-
-        config = dict()
-        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()
-
-        return config
-
-    def execute_command(self, args, config_override={}, allow_failure=True,
-                        return_all=False):
-        command_args = self._get_command_args(
-            args, config_override=config_override)
-        logger.debug(' '.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()]
-        if p.returncode and allow_failure:
-            if stderr.strip():
-                error_msg = stderr.strip()
-            else:
-                error_msg = stdout.strip()
-            raise TaskWarriorException(error_msg)
-
-        # Return all whole triplet only if explicitly asked for
-        if not return_all:
-            return stdout.rstrip().split('\n')
-        else:
-            return (stdout.rstrip().split('\n'),
-                    stderr.rstrip().split('\n'),
-                    p.returncode)
-
-    def enforce_recurrence(self):
-        # Run arbitrary report command which will trigger generation
-        # of recurrent tasks.
-
-        # Only necessary for TW up to 2.4.1, fixed in 2.4.2.
-        if self.version < VERSION_2_4_2:
-            self.execute_command(['next'], allow_failure=False)
-
-    def filter_tasks(self, filter_obj):
-        self.enforce_recurrence()
-        args = ['export', '--'] + filter_obj.get_filter_params()
-        tasks = []
-        for line in self.execute_command(args):
-            if line:
-                data = line.strip(',')
-                try:
-                    filtered_task = Task(self)
-                    filtered_task._load_data(json.loads(data))
-                    tasks.append(filtered_task)
-                except ValueError:
-                    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 undo(self):
-        self.execute_command(['undo'])