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authorBarry Warsaw2013-03-19 17:34:45 -0700
committerBarry Warsaw2013-03-19 17:34:45 -0700
commit39f0557eb67fec37b3cfea848592ed8c50fd4be9 (patch)
treee902dad22cef8e39235564b454ac81eeaeaa4f8a /src/mailman/commands/cli_conf.py
parentd1e83500b9cbd44eaafc8c1fa59272b8e2946930 (diff)
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+# Copyright (C) 2013 by the Free Software Foundation, Inc.
+#
+# This file is part of GNU Mailman.
+#
+# GNU Mailman 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.
+#
+# GNU Mailman 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
+# GNU Mailman. If not, see <http://www.gnu.org/licenses/>.
+
+"""Print the mailman configuration."""
+
+from __future__ import absolute_import, print_function, unicode_literals
+
+__metaclass__ = type
+__all__ = [
+ 'Conf'
+ ]
+
+
+import sys
+
+from contextlib import closing
+from lazr.config._config import Section
+from zope.interface import implementer
+
+from mailman.config import config
+from mailman.core.i18n import _
+from mailman.interfaces.command import ICLISubCommand
+
+
+
+@implementer(ICLISubCommand)
+class Conf:
+ """Print the mailman configuration."""
+
+ name = 'conf'
+
+ def add(self, parser, command_parser):
+ """See `ICLISubCommand`."""
+
+ self.parser = parser
+ command_parser.add_argument(
+ '-o', '--output',
+ action='store', help=_("""\
+ File to send the output to. If not given, or if '-' is given,
+ standard output is used."""))
+ command_parser.add_argument(
+ '-s', '--section',
+ action='store', help=_("""\
+ Section to use for the lookup. If no key is given, all the
+ key-value pairs of the given section will be displayed.
+ """))
+ command_parser.add_argument(
+ '-k', '--key',
+ action='store', help=_("""\
+ Key to use for the lookup. If no section is given, all the
+ key-values pair from any section matching the given key will be
+ displayed.
+ """))
+
+ def _get_value(self, section, key):
+ return getattr(getattr(config, section), key)
+
+ def _print_full_syntax(self, section, key, value, output):
+ print('[{}] {}: {}'.format(section, key, value), file=output)
+
+ def _show_key_error(self, section, key):
+ self.parser.error('Section {}: No such key: {}'.format(section, key))
+
+ def _show_section_error(self, section):
+ self.parser.error('No such section: {}'.format(section))
+
+ def _print_values_for_section(self, section, output):
+ current_section = getattr(config, section)
+ for key in current_section:
+ self._print_full_syntax(section, key,
+ self._get_value(section, key), output)
+
+ def _section_exists(self, section):
+ # Not all of the attributes in config are actual sections, so we have
+ # to check the section's type.
+ return (hasattr(config, section) and
+ isinstance(getattr(config, section), Section))
+
+ def _inner_process(self, args, output):
+ # Process the command, ignoring the closing of the output file.
+ section = args.section
+ key = args.key
+ # Case 1: Both section and key are given, so we can directly look up
+ # the value.
+ if section is not None and key is not None:
+ if not self._section_exists(section):
+ self._show_section_error(section)
+ elif not hasattr(getattr(config, section), key):
+ self._show_key_error(section, key)
+ else:
+ print(self._get_value(section, key), file=output)
+ # Case 2: Section is given, key is not given.
+ elif section is not None and key is None:
+ if self._section_exists(section):
+ self._print_values_for_section(section, output)
+ else:
+ self._show_section_error(section)
+ # Case 3: Section is not given, key is given.
+ elif section is None and key is not None:
+ for current_section in config.schema._section_schemas:
+ # We have to ensure that the current section actually exists
+ # and that it contains the given key.
+ if (self._section_exists(current_section) and
+ hasattr(getattr(config, current_section), key)):
+ # Then...
+ self._print_full_syntax(
+ current_section, key,
+ self._get_value(current_section, key),
+ output)
+ # Case 4: Neither section nor key are given, just display all the
+ # sections and their corresponding key/value pairs.
+ elif section is None and key is None:
+ for current_section in config.schema._section_schemas:
+ # However, we have to make sure that the current sections and
+ # key which are being looked up actually exist before trying
+ # to print them.
+ if self._section_exists(current_section):
+ self._print_values_for_section(current_section, output)
+
+ def process(self, args):
+ """See `ICLISubCommand`."""
+ if args.output is None or args.output == '-':
+ self._inner_process(args, sys.stdout)
+ else:
+ with closing(open(args.output, 'w')) as output:
+ self._inner_process(args, output)