Merged be.restructure, major internal reorganization.

Added a bunch of classes to make the commands, user interfaces, and
storage backends more abstract and distinct.  This should make it much
easier to extend and maintain BE.

Features:
 * Directory restructured:
   becommands/ -> libbe/commands
   submods sorted by functionality.
 * Lots of new classes:
   Option, Argument, Command
   InputOutput, StorageCallbacks, UserInterface
   Storage
 * Consolidated ID handling in libbe.util.id
 * Transitioned VCS backends for Python-based VCSs from subprocess
   calss to internal python calls.

Plus the user-visible changes:
 * New bugdir/bug/comment ID format replaces old bug:comment format.
 * Deprecated support for `be diff` on Arch and Darcs <= 2.3.1.  A new
   backend abstraction (Storage) makes the former implementation
   ungainly.
 * Improved command completion.
 * Removed commands close, open, email_bugs, 
 * Flipped some arguments
   `be assign BUG-ID [ASSIGNEE]` -> `be status ASSIGNED BUG-ID ...`
   `be severity BUG-ID SEVERITY` -> `be severity SEVERITY BUG-ID ...`
   `be status BUG-ID STATUS` -> `be status STATUS BUG-ID ...`

In the merge:
  * Added 'commit' to list of pagerless commands.
  * Updated doc/README.dev

See
#bea86499-824e-4e77-b085-2d581fa9ccab/1100c966-9671-4bc6-8b68-6d408a910da1#
for a discussion of why the changes were made and some of the
difficulties en-route.

1 files changed, 144 insertions, 0 deletions

diff --git a/libbe/command/set.py b/libbe/command/set.py
new file mode 100644
index 0000000..46a63b4
--- /dev/null
+++ b/libbe/command/set.py
@@ -0,0 +1,144 @@
+# Copyright (C) 2005-2009 Aaron Bentley and Panometrics, Inc.
+#                         Gianluca Montecchi <gian@grys.it>
+#                         Marien Zwart <marienz@gentoo.org>
+#                         Thomas Gerigk <tgerigk@gmx.de>
+#                         W. Trevor King <wking@drexel.edu>
+#
+# 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 2 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, write to the Free Software Foundation, Inc.,
+# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+
+
+import textwrap
+
+import libbe
+import libbe.bugdir
+import libbe.command
+import libbe.command.util
+from libbe.storage.util.settings_object import EMPTY
+
+
+class Set (libbe.command.Command):
+    """Change bug directory settings
+
+    >>> import sys
+    >>> import libbe.bugdir
+    >>> bd = libbe.bugdir.SimpleBugDir(memory=False)
+    >>> io = libbe.command.StringInputOutput()
+    >>> io.stdout = sys.stdout
+    >>> ui = libbe.command.UserInterface(io=io)
+    >>> ui.storage_callbacks.set_storage(bd.storage)
+    >>> cmd = Set(ui=ui)
+
+    >>> ret = ui.run(cmd, args=['target'])
+    None
+    >>> ret = ui.run(cmd, args=['target', 'abcdefg'])
+    >>> ret = ui.run(cmd, args=['target'])
+    abcdefg
+    >>> ret = ui.run(cmd, args=['target', 'none'])
+    >>> ret = ui.run(cmd, args=['target'])
+    None
+    >>> ui.cleanup()
+    >>> bd.cleanup()
+    """
+    name = 'set'
+
+    def __init__(self, *args, **kwargs):
+        libbe.command.Command.__init__(self, *args, **kwargs)
+        self.args.extend([
+                libbe.command.Argument(
+                    name='setting', metavar='SETTING', optional=True,
+                    completion_callback=complete_bugdir_settings),
+                libbe.command.Argument(
+                    name='value', metavar='VALUE', optional=True)
+                ])
+
+    def _run(self, **params):
+        bugdir = self._get_bugdir()
+        if params['setting'] == None:
+            keys = bugdir.settings_properties
+            keys.sort()
+            for key in keys:
+                print >> self.stdout, \
+                    '%16s: %s' % (key, _value_string(bugdir, key))
+            return 0
+        if params['setting'] not in bugdir.settings_properties:
+            msg = 'Invalid setting %s\n' % params['setting']
+            msg += 'Allowed settings:\n  '
+            msg += '\n  '.join(bugdir.settings_properties)
+            raise libbe.command.UserError(msg)
+        if params['value'] == None:
+            print _value_string(bugdir, params['setting'])
+        else:
+            if params['value'] == 'none':
+                params['value'] = EMPTY
+            old_setting = bugdir.settings.get(params['setting'])
+            attr = bugdir._setting_name_to_attr_name(params['setting'])
+            setattr(bugdir, attr, params['value'])
+        return 0
+
+    def _long_help(self):
+        return """
+Show or change per-tree settings.
+
+If name and value are supplied, the name is set to a new value.
+If no value is specified, the current value is printed.
+If no arguments are provided, all names and values are listed.
+
+To unset a setting, set it to "none".
+
+Allowed settings are:
+
+%s""" % ('\n'.join(get_bugdir_settings()),)
+
+def get_bugdir_settings():
+    settings = []
+    for s in libbe.bugdir.BugDir.settings_properties:
+        settings.append(s)
+    settings.sort()
+    documented_settings = []
+    for s in settings:
+        set = getattr(libbe.bugdir.BugDir, s)
+        dstr = set.__doc__.strip()
+        # per-setting comment adjustments
+        if s == 'vcs_name':
+            lines = dstr.split('\n')
+            while lines[0].startswith('This property defaults to') == False:
+                lines.pop(0)
+            assert len(lines) != None, \
+                'Unexpected vcs_name docstring:\n  "%s"' % dstr
+            lines.insert(
+                0, 'The name of the revision control system to use.\n')
+            dstr = '\n'.join(lines)
+        doc = textwrap.wrap(dstr, width=70, initial_indent='  ',
+                            subsequent_indent='  ')
+        documented_settings.append('%s\n%s' % (s, '\n'.join(doc)))
+    return documented_settings
+
+def _value_string(bugdir, setting):
+    val = bugdir.settings.get(setting, EMPTY)
+    if val == EMPTY:
+        default = getattr(bugdir, bugdir._setting_name_to_attr_name(setting))
+        if default not in [None, EMPTY]:
+            val = 'None (%s)' % default
+        else:
+            val = None
+    return str(val)
+
+def complete_bugdir_settings(command, argument, fragment=None):
+    """
+    List possible command completions for fragment.
+
+    Neither the command nor argument arguments are used.
+    """
+    return libbe.bugdir.BugDir.settings_properties