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diff --git a/interfaces/email/interactive/becommands/set.py b/interfaces/email/interactive/becommands/set.py
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+# Copyright (C) 2005-2009 Aaron Bentley and Panometrics, Inc.
+# Chris Ball <cjb@laptop.org>
+# 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.
+"""Change tree settings"""
+import textwrap
+from libbe import cmdutil, bugdir, vcs, settings_object
+__desc__ = __doc__
+
+def _value_string(bd, setting):
+ val = bd.settings.get(setting, settings_object.EMPTY)
+ if val == settings_object.EMPTY:
+ default = getattr(bd, bd._setting_name_to_attr_name(setting))
+ if default not in [None, settings_object.EMPTY]:
+ val = "None (%s)" % default
+ else:
+ val = None
+ return str(val)
+
+def execute(args, manipulate_encodings=True):
+ """
+ >>> import os
+ >>> bd = bugdir.SimpleBugDir()
+ >>> os.chdir(bd.root)
+ >>> execute(["target"], manipulate_encodings=False)
+ None
+ >>> execute(["target", "tomorrow"], manipulate_encodings=False)
+ >>> execute(["target"], manipulate_encodings=False)
+ tomorrow
+ >>> execute(["target", "none"], manipulate_encodings=False)
+ >>> execute(["target"], manipulate_encodings=False)
+ None
+ >>> bd.cleanup()
+ """
+ parser = get_parser()
+ options, args = parser.parse_args(args)
+ complete(options, args, parser)
+ if len(args) > 2:
+ raise cmdutil.UsageError, "Too many arguments"
+ bd = bugdir.BugDir(from_disk=True,
+ manipulate_encodings=manipulate_encodings)
+ if len(args) == 0:
+ keys = bd.settings_properties
+ keys.sort()
+ for key in keys:
+ print "%16s: %s" % (key, _value_string(bd, key))
+ elif len(args) == 1:
+ print _value_string(bd, args[0])
+ else:
+ if args[1] == "none":
+ setattr(bd, args[0], settings_object.EMPTY)
+ else:
+ if args[0] not in bd.settings_properties:
+ msg = "Invalid setting %s\n" % args[0]
+ msg += 'Allowed settings:\n '
+ msg += '\n '.join(bd.settings_properties)
+ raise cmdutil.UserError(msg)
+ old_setting = bd.settings.get(args[0])
+ setattr(bd, args[0], args[1])
+
+def get_parser():
+ parser = cmdutil.CmdOptionParser("be set [NAME] [VALUE]")
+ return parser
+
+def get_bugdir_settings():
+ settings = []
+ for s in bugdir.BugDir.settings_properties:
+ settings.append(s)
+ settings.sort()
+ documented_settings = []
+ for s in settings:
+ set = getattr(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
+
+longhelp="""
+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 help():
+ return get_parser().help_str() + longhelp
+
+def complete(options, args, parser):
+ for option, value in cmdutil.option_value_pairs(options, parser):
+ if value == "--complete":
+ # no argument-options at the moment, so this is future-proofing
+ raise cmdutil.GetCompletions()
+ for pos,value in enumerate(args):
+ if value == "--complete":
+ if pos == 0: # first positional argument is a setting name
+ props = bugdir.BugDir.settings_properties
+ raise cmdutil.GetCompletions(props)
+ raise cmdutil.GetCompletions() # no positional arguments for list