VirtualMailManager/cli/main.py
author martin f. krafft <madduck@madduck.net>
Mon, 09 Apr 2012 18:10:56 +0200
branchv0.6.x
changeset 504 f180ead60568
parent 420 d4a341248500
child 568 14abdd04ddf5
permissions -rw-r--r--
First version of a CatchallAlias class I based the CatchallAlias class in catchall.py heavily on the Alias class, but by copy, not deriving. The two are functionally related, but the implementations are too different because CatchallAliases have no localpart.
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# -*- coding: UTF-8 -*-
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# Copyright 2007 - 2011, Pascal Volk
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# See COPYING for distribution information.
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"""
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    VirtualMailManager.cli.main
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    ~~~~~~~~~~~~~~~~~~~~~~~~~~~
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    VirtualMailManager's command line interface.
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"""
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from ConfigParser import NoOptionError, NoSectionError
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from VirtualMailManager import ENCODING, errors
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from VirtualMailManager.config import BadOptionError, ConfigValueError
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from VirtualMailManager.cli import w_err
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from VirtualMailManager.cli.handler import CliHandler
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from VirtualMailManager.constants import DATABASE_ERROR, EX_MISSING_ARGS, \
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     EX_SUCCESS, EX_UNKNOWN_COMMAND, EX_USER_INTERRUPT, INVALID_ARGUMENT
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from VirtualMailManager.cli.subcommands import RunContext, cmd_map, \
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     update_cmd_map, usage
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_ = lambda msg: msg
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def _get_handler():
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    """Try to get a CliHandler. Exit the program when an error occurs."""
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    try:
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        handler = CliHandler()
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    except (errors.NotRootError, errors.PermissionError, errors.VMMError,
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            errors.ConfigError), err:
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        w_err(err.code, _(u'Error: %s') % err.msg)
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    else:
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        handler.cfg_install()
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        return handler
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def run(argv):
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    update_cmd_map()
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    if len(argv) < 2:
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        usage(EX_MISSING_ARGS, _(u"You must specify a subcommand at least."))
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    sub_cmd = argv[1].lower()
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    if sub_cmd in cmd_map:
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        cmd_func = cmd_map[sub_cmd].func
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    else:
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        for cmd in cmd_map.itervalues():
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            if cmd.alias == sub_cmd:
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                cmd_func = cmd.func
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                sub_cmd = cmd.name
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                break
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        else:
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            usage(EX_UNKNOWN_COMMAND, _(u"Unknown subcommand: '%s'") % sub_cmd)
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    handler = _get_handler()
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    run_ctx = RunContext(argv, handler, sub_cmd)
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    try:
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        cmd_func(run_ctx)
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    except (EOFError, KeyboardInterrupt):
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        # TP: We have to cry, because root has killed/interrupted vmm
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        # with Ctrl+C or Ctrl+D.
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        w_err(EX_USER_INTERRUPT, '', _(u'Ouch!'), '')
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    except errors.VMMError, err:
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        if err.code != DATABASE_ERROR:
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            w_err(err.code, _(u'Error: %s') % err.msg)
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        w_err(err.code, unicode(err.msg, ENCODING, 'replace'))
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    except (BadOptionError, ConfigValueError), err:
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        w_err(INVALID_ARGUMENT, _(u'Error: %s') % err)
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    except NoSectionError, err:
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        w_err(INVALID_ARGUMENT,
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              _(u"Error: Unknown section: '%s'") % err.section)
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    except NoOptionError, err:
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        w_err(INVALID_ARGUMENT,
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              _(u"Error: No option '%(option)s' in section: '%(section)s'") %
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              {'option': err.option, 'section': err.section})
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    if handler.has_warnings():
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        w_err(0, _(u'Warnings:'), *handler.get_warnings())
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    return EX_SUCCESS
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del _