Merge branch 'edit'

Feature is not ready yet, but since it's a part of issue #2 I already went
ahead and pushed the first part.

topydo/cli/Main.py

@@ -74,6 +74,7 @@ from topydo.lib.DeleteCommand import DeleteCommand
 from topydo.lib.DepCommand import DepCommand
 from topydo.lib.DepriCommand import DepriCommand
 from topydo.lib.DoCommand import DoCommand
+from topydo.lib.EditCommand import EditCommand
 from topydo.lib.ListCommand import ListCommand
 from topydo.lib.ListContextCommand import ListContextCommand
 from topydo.lib.ListProjectCommand import ListProjectCommand
@@ -173,6 +174,7 @@ class CLIApplication(object):
           'dep': DepCommand,
           'depri': DepriCommand,
           'do': DoCommand,
+          'edit': EditCommand,
           'ls': ListCommand,
           'lscon': ListContextCommand,
           'listcon': ListContextCommand,

topydo/lib/EditCommand.py

+# Topydo - A todo.txt client written in Python.
+# Copyright (C) 2014 Bram Schoenmakers <me@bramschoenmakers.nl>
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+import os
+from subprocess import call
+
+from topydo.lib.Command import Command
+from topydo.lib.Config import config
+
+class EditCommand(Command):
+    def __init__(self, p_todolist, *p_args):
+        super(EditCommand, self).__init__([], None)
+
+    def execute(self):
+        editor = os.environ['EDITOR'] or 'vi'
+        todo = config().todotxt()
+
+        return call([editor, todo]) == 0