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option_parser.py
# optparse.py # CLI options parser. # # Copyright (C) 2014-2016 Red Hat, Inc. # # This copyrighted material is made available to anyone wishing to use, # modify, copy, or redistribute it subject to the terms and conditions of # the GNU General Public License v.2, or (at your option) any later version. # This program is distributed in the hope that it will be useful, but WITHOUT # ANY WARRANTY expressed or implied, including the implied warranties 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. Any Red Hat trademarks that are incorporated in the # source code or documentation are not subject to the GNU General Public # License and may only be used or replicated with the express permission of # Red Hat, Inc. # from __future__ import unicode_literals from dnf.i18n import _ from dnf.util import _parse_specs import argparse import dnf.exceptions import dnf.util import dnf.rpm import dnf.yum.misc import logging import os.path import re import sys logger = logging.getLogger("dnf") class MultilineHelpFormatter(argparse.HelpFormatter): def _split_lines(self, text, width): if '\n' in text: return text.splitlines() return super(MultilineHelpFormatter, self)._split_lines(text, width) class OptionParser(argparse.ArgumentParser): """ArgumentParser like class to do things the "yum way".""" def __init__(self, reset_usage=True): super(OptionParser, self).__init__(add_help=False, formatter_class=MultilineHelpFormatter) self.command_positional_parser = None self.command_group = None self._add_general_options() if reset_usage: self._cmd_usage = {} # names, summary for dnf commands, to build usage self._cmd_groups = set() # cmd groups added (main, plugin) def error(self, msg): """Output an error message, and exit the program. This method overrides standard argparser's error so that error output goes to the logger. :param msg: the error message to output """ self.print_usage() logger.critical(_("Command line error: %s"), msg) sys.exit(1) class _RepoCallback(argparse.Action): def __call__(self, parser, namespace, values, opt_str): operation = 'disable' if opt_str == '--disablerepo' else 'enable' l = getattr(namespace, self.dest) l.extend((x, operation) for x in re.split(r'\s*[,\s]\s*', values)) class _RepoCallbackEnable(argparse.Action): def __call__(self, parser, namespace, values, opt_str): namespace.repos_ed.append((values[0], 'enable')) setattr(namespace, 'reponame', values) class _SplitCallback(argparse._AppendAction): """ Split all strings in seq, at "," and whitespace. Returns a new list. """ SPLITTER = r'\s*[,\s]\s*' def __call__(self, parser, namespace, values, opt_str): first = True for val in re.split(self.SPLITTER, values): if first or val: # Empty values are sometimes used to clear existing content of the option. # Only the first value in the parsed string can be empty. Other empty values # are ignored. super(OptionParser._SplitCallback, self).__call__(parser, namespace, val, opt_str) first = False class _SplitExtendDictCallback(argparse.Action): """ Split string at "," or whitespace to (key, value). Extends dict with {key: value}.""" def __call__(self, parser, namespace, values, opt_str): try: key, val = values.split(',') if not key or not val: raise ValueError except ValueError: msg = _('bad format: %s') % values raise argparse.ArgumentError(self, msg) dct = getattr(namespace, self.dest) dct[key] = val class _SetoptsCallback(argparse.Action): """ Parse setopts arguments and put them into main_<setopts> and repo_<setopts>.""" def __call__(self, parser, namespace, values, opt_str): vals = values.split('=') if len(vals) > 2: logger.warning(_("Setopt argument has multiple values: %s"), values) return if len(vals) < 2: logger.warning(_("Setopt argument has no value: %s"), values) return k, v = vals period = k.rfind('.') if period != -1: repo = k[:period] k = k[period+1:] if hasattr(namespace, 'repo_setopts'): repoopts = namespace.repo_setopts else: repoopts = {} repoopts.setdefault(repo, {}).setdefault(k, []).append(v) setattr(namespace, 'repo_' + self.dest, repoopts) else: if hasattr(namespace, 'main_setopts'): mainopts = namespace.main_setopts else: mainopts = {} mainopts.setdefault(k, []).append(v) setattr(namespace, 'main_' + self.dest, mainopts) class ParseSpecGroupFileCallback(argparse.Action): def __call__(self, parser, namespace, values, opt_str): _parse_specs(namespace, values) class PkgNarrowCallback(argparse.Action): def __init__(self, *args, **kwargs): self.pkgnarrow = {} try: for k in ['choices', 'default']: self.pkgnarrow[k] = kwargs[k] del kwargs[k] except KeyError as e: raise TypeError("%s() missing mandatory argument %s" % (self.__class__.__name__, e)) kwargs['default'] = [] super(OptionParser.PkgNarrowCallback, self).__init__(*args, **kwargs) def __call__(self, parser, namespace, values, opt_str): dest_action = self.dest + '_action' if not values or values[0] not in self.pkgnarrow['choices']: narrow = self.pkgnarrow['default'] else: narrow = values.pop(0) setattr(namespace, dest_action, narrow) setattr(namespace, self.dest, values) class ForceArchAction(argparse.Action): def __call__(self, parser, namespace, values, opt_str): namespace.ignorearch = True namespace.arch = values def _add_general_options(self): """ Standard options known to all dnf subcommands. """ # All defaults need to be a None, so we can always tell whether the user # has set something or whether we are getting a default. general_grp = self.add_argument_group(_('General {prog} options'.format( prog=dnf.util.MAIN_PROG_UPPER))) general_grp.add_argument("-c", "--config", dest="config_file_path", default=None, metavar='[config file]', help=_("config file location")) general_grp.add_argument("-q", "--quiet", dest="quiet", action="store_true", default=None, help=_("quiet operation")) general_grp.add_argument("-v", "--verbose", action="store_true", default=None, help=_("verbose operation")) general_grp.add_argument("--version", action="store_true", default=None, help=_("show {prog} version and exit").format( prog=dnf.util.MAIN_PROG_UPPER)) general_grp.add_argument("--installroot", help=_("set install root"), metavar='[path]') general_grp.add_argument("--nodocs", action="store_const", const=['nodocs'], dest='tsflags', help=_("do not install documentations")) general_grp.add_argument("--noplugins", action="store_false", default=None, dest='plugins', help=_("disable all plugins")) general_grp.add_argument("--enableplugin", dest="enableplugin", default=[], action=self._SplitCallback, help=_("enable plugins by name"), metavar='[plugin]') general_grp.add_argument("--disableplugin", dest="disableplugin", default=[], action=self._SplitCallback, help=_("disable plugins by name"), metavar='[plugin]') general_grp.add_argument("--releasever", default=None, help=_("override the value of $releasever" " in config and repo files")) general_grp.add_argument("--setopt", dest="setopts", default=[], action=self._SetoptsCallback, help=_("set arbitrary config and repo options")) general_grp.add_argument("--skip-broken", dest="skip_broken", action="store_true", default=None, help=_("resolve depsolve problems by skipping packages")) general_grp.add_argument('-h', '--help', '--help-cmd', action="store_true", dest='help', help=_("show command help")) general_grp.add_argument('--allowerasing', action='store_true', default=None, help=_('allow erasing of installed packages to ' 'resolve dependencies')) best_group = general_grp.add_mutually_exclusive_group() best_group.add_argument("-b", "--best", action="store_true", dest='best', default=None, help=_("try the best available package versions in transactions.")) best_group.add_argument("--nobest", action="store_false", dest='best', help=_("do not limit the transaction to the best candidate")) general_grp.add_argument("-C", "--cacheonly", dest="cacheonly", action="store_true", default=None, help=_("run entirely from system cache, " "don't update cache")) general_grp.add_argument("-R", "--randomwait", dest="sleeptime", type=int, default=None, metavar='[minutes]', help=_("maximum command wait time")) general_grp.add_argument("-d", "--debuglevel", dest="debuglevel", metavar='[debug level]', default=None, help=_("debugging output level"), type=int) general_grp.add_argument("--debugsolver", action="store_true", default=None, help=_("dumps detailed solving results into" " files")) general_grp.add_argument("--showduplicates", dest="showdupesfromrepos", action="store_true", default=None, help=_("show duplicates, in repos, " "in list/search commands")) general_grp.add_argument("-e", "--errorlevel", default=None, type=int, help=_("error output level")) general_grp.add_argument("--obsoletes", default=None, dest="obsoletes", action="store_true", help=_("enables {prog}'s obsoletes processing logic " "for upgrade or display capabilities that " "the package obsoletes for info, list and " "repoquery").format(prog=dnf.util.MAIN_PROG)) general_grp.add_argument("--rpmverbosity", default=None, help=_("debugging output level for rpm"), metavar='[debug level name]') general_grp.add_argument("-y", "--assumeyes", action="store_true", default=None, help=_("automatically answer yes" " for all questions")) general_grp.add_argument("--assumeno", action="store_true", default=None, help=_("automatically answer no" " for all questions")) general_grp.add_argument("--enablerepo", action=self._RepoCallback, dest='repos_ed', default=[], metavar='[repo]', help=_("Enable additional repositories. List option. " "Supports globs, can be specified multiple times.")) repo_group = general_grp.add_mutually_exclusive_group() repo_group.add_argument("--disablerepo", action=self._RepoCallback, dest='repos_ed', default=[], metavar='[repo]', help=_("Disable repositories. List option. " "Supports globs, can be specified multiple times.")) repo_group.add_argument('--repo', '--repoid', metavar='[repo]', dest='repo', action=self._SplitCallback, default=[], help=_('enable just specific repositories by an id or a glob, ' 'can be specified multiple times')) enable_group = general_grp.add_mutually_exclusive_group() enable_group.add_argument("--enable", default=False, dest="set_enabled", action="store_true", help=_("enable repos with config-manager " "command (automatically saves)")) enable_group.add_argument("--disable", default=False, dest="set_disabled", action="store_true", help=_("disable repos with config-manager " "command (automatically saves)")) general_grp.add_argument("-x", "--exclude", "--excludepkgs", default=[], dest='excludepkgs', action=self._SplitCallback, help=_("exclude packages by name or glob"), metavar='[package]') general_grp.add_argument("--disableexcludes", "--disableexcludepkgs", default=[], dest="disable_excludes", action=self._SplitCallback, help=_("disable excludepkgs"), metavar='[repo]') general_grp.add_argument("--repofrompath", default={}, action=self._SplitExtendDictCallback, metavar='[repo,path]', help=_("label and path to an additional repository to use (same " "path as in a baseurl), can be specified multiple times.")) general_grp.add_argument("--noautoremove", action="store_false", default=None, dest='clean_requirements_on_remove', help=_("disable removal of dependencies that are no longer used")) general_grp.add_argument("--nogpgcheck", action="store_false", default=None, dest='gpgcheck', help=_("disable gpg signature checking (if RPM policy allows)")) general_grp.add_argument("--color", dest="color", default=None, help=_("control whether color is used")) general_grp.add_argument("--refresh", dest="freshest_metadata", action="store_true", help=_("set metadata as expired before running" " the command")) general_grp.add_argument("-4", dest="ip_resolve", default=None, help=_("resolve to IPv4 addresses only"), action="store_const", const='ipv4') general_grp.add_argument("-6", dest="ip_resolve", default=None, help=_("resolve to IPv6 addresses only"), action="store_const", const='ipv6') general_grp.add_argument("--destdir", "--downloaddir", dest="destdir", default=None, help=_("set directory to copy packages to")) general_grp.add_argument("--downloadonly", dest="downloadonly", action="store_true", default=False, help=_("only download packages")) general_grp.add_argument("--comment", dest="comment", default=None, help=_("add a comment to transaction")) # Updateinfo options... general_grp.add_argument("--bugfix", action="store_true", help=_("Include bugfix relevant packages, " "in updates")) general_grp.add_argument("--enhancement", action="store_true", help=_("Include enhancement relevant packages," " in updates")) general_grp.add_argument("--newpackage", action="store_true", help=_("Include newpackage relevant packages," " in updates")) general_grp.add_argument("--security", action="store_true", help=_("Include security relevant packages, " "in updates")) general_grp.add_argument("--advisory", "--advisories", dest="advisory", default=[], action=self._SplitCallback, help=_("Include packages needed to fix the " "given advisory, in updates")) general_grp.add_argument("--bz", "--bzs", default=[], dest="bugzilla", action=self._SplitCallback, help=_( "Include packages needed to fix the given BZ, in updates")) general_grp.add_argument("--cve", "--cves", default=[], dest="cves", action=self._SplitCallback, help=_("Include packages needed to fix the given CVE, in updates")) general_grp.add_argument( "--sec-severity", "--secseverity", choices=['Critical', 'Important', 'Moderate', 'Low'], default=[], dest="severity", action=self._SplitCallback, help=_( "Include security relevant packages matching the severity, " "in updates")) general_grp.add_argument("--forcearch", metavar="ARCH", dest=argparse.SUPPRESS, action=self.ForceArchAction, choices=sorted(dnf.rpm._BASEARCH_MAP.keys()), help=_("Force the use of an architecture")) general_grp.add_argument('command', nargs='?', help=argparse.SUPPRESS) def _add_cmd_usage(self, cmd, group): """ store usage info about a single dnf command.""" summary = dnf.i18n.ucd(cmd.summary) name = dnf.i18n.ucd(cmd.aliases[0]) if not name in self._cmd_usage: self._cmd_usage[name] = (group, summary) self._cmd_groups.add(group) def add_commands(self, cli_cmds, group): """ store name & summary for dnf commands The stored information is used build usage information grouped by build-in & plugin commands. """ for cmd in set(cli_cmds.values()): self._add_cmd_usage(cmd, group) def get_usage(self): """ get the usage information to show the user. """ desc = {'main': _('List of Main Commands:'), 'plugin': _('List of Plugin Commands:')} usage = '%s [options] COMMAND\n' % dnf.util.MAIN_PROG for grp in ['main', 'plugin']: if not grp in self._cmd_groups: # dont add plugin usage, if we dont have plugins continue usage += "\n%s\n\n" % desc[grp] for name in sorted(self._cmd_usage.keys()): group, summary = self._cmd_usage[name] if group == grp: usage += "%-25s %s\n" % (name, summary) return usage def _add_command_options(self, command): self.prog = "%s %s" % (dnf.util.MAIN_PROG, command._basecmd) self.description = command.summary self.command_positional_parser = argparse.ArgumentParser(self.prog, add_help=False) self.command_positional_parser.print_usage = self.print_usage self.command_positional_parser._positionals.title = None self.command_group = self.add_argument_group( '{} command-specific options'.format(command._basecmd.capitalize())) self.command_group.add_argument = self.cmd_add_argument self.command_group._command = command._basecmd command.set_argparser(self.command_group) def cmd_add_argument(self, *args, **kwargs): if all([(arg[0] in self.prefix_chars) for arg in args]): return type(self.command_group).add_argument(self.command_group, *args, **kwargs) else: return self.command_positional_parser.add_argument(*args, **kwargs) def _check_encoding(self, args): for arg in args: try: arg.encode('utf-8') except UnicodeEncodeError as e: raise dnf.exceptions.ConfigError( _("Cannot encode argument '%s': %s") % (arg, str(e))) def parse_main_args(self, args): self._check_encoding(args) namespace, _unused_args = self.parse_known_args(args) return namespace def parse_command_args(self, command, args): self._add_command_options(command) namespace, unused_args = self.parse_known_args(args) namespace = self.command_positional_parser.parse_args(unused_args, namespace) command.opts = namespace return command.opts def print_usage(self, file_=None): if self.command_positional_parser: self._actions += self.command_positional_parser._actions super(OptionParser, self).print_usage(file_) def print_help(self, command=None): # pylint: disable=W0212 if command: if not self.command_group or self.command_group._command != command._basecmd: self._add_command_options(command) self._actions += self.command_positional_parser._actions self._action_groups.append(self.command_positional_parser._positionals) else: self.usage = self.get_usage() super(OptionParser, self).print_help()