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Edit File : shell.py \| Size : 9.61 KB
# shell.py # Shell CLI command. # # Copyright (C) 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 dnf.cli import commands from dnf.i18n import _, ucd import dnf.util import cmd import copy import dnf import logging import shlex import sys logger = logging.getLogger('dnf') # only demands we'd like to override class ShellDemandSheet(object): available_repos = True resolving = True root_user = True sack_activation = True class ShellCommand(commands.Command, cmd.Cmd): aliases = ('shell', 'sh') summary = _('run an interactive {prog} shell').format(prog=dnf.util.MAIN_PROG_UPPER) MAPPING = {'repo': 'repo', 'repository': 'repo', 'exit': 'quit', 'quit': 'quit', 'run': 'ts_run', 'ts': 'transaction', 'transaction': 'transaction', 'config': 'config', 'resolvedep': 'resolve', 'help': 'help' } def __init__(self, cli): commands.Command.__init__(self, cli) cmd.Cmd.__init__(self) self.prompt = '> ' @staticmethod def set_argparser(parser): parser.add_argument('script', nargs='?', metavar=_('SCRIPT'), help=_('Script to run in {prog} shell').format( prog=dnf.util.MAIN_PROG_UPPER)) def configure(self): # append to ShellDemandSheet missing demands from # dnf.cli.demand.DemandSheet with their default values. default_demands = self.cli.demands self.cli.demands = ShellDemandSheet() for attr in dir(default_demands): if attr.startswith('__'): continue try: getattr(self.cli.demands, attr) except AttributeError: setattr(self.cli.demands, attr, getattr(default_demands, attr)) def run(self): if self.opts.script: self._run_script(self.opts.script) else: self.cmdloop() def _clean(self): self.base._finalize_base() self.base._transaction = None self.base.fill_sack() def onecmd(self, line): if not line or line == '\n': return if line == 'EOF': line = 'quit' try: s_line = shlex.split(line) except: self._help() return # reset option parser before each command, keep usage information self.cli.optparser.__init__(reset_usage=False) opts = self.cli.optparser.parse_main_args(s_line) # Disable shell recursion. if opts.command == 'shell': return if opts.command in self.MAPPING: getattr(self, '_' + self.MAPPING[opts.command])(s_line[1::]) else: cmd_cls = self.cli.cli_commands.get(opts.command) if cmd_cls is not None: cmd = cmd_cls(self.cli) try: opts = self.cli.optparser.parse_command_args(cmd, s_line) except SystemExit: # argparse.ArgumentParser prints usage information and executes # sys.exit() on problems with parsing command line arguments return try: cmd.cli.demands = copy.deepcopy(self.cli.demands) cmd.configure() cmd.run() except dnf.exceptions.Error as e: logger.error(_("Error:") + " " + ucd(e)) return else: self._help() def _config(self, args=None): def print_or_set(key, val, conf): if val: setattr(conf, key, val) else: try: print('{}: {}'.format(key, getattr(conf, str(key)))) except: logger.warning(_('Unsupported key value.')) if not args or len(args) > 2: self._help('config') return key = args[0] val = args[1] if len(args) == 2 else None period = key.find('.') if period != -1: repo_name = key[:period] key = key[period+1:] repos = self.base.repos.get_matching(repo_name) for repo in repos: print_or_set(key, val, repo) if not repos: logger.warning(_('Could not find repository: %s'), repo_name) else: print_or_set(key, val, self.base.conf) def _help(self, args=None): """Output help information. :param args: the command to output help information about. If args is an empty, general help will be output. """ arg = args[0] if isinstance(args, list) and len(args) > 0 else args msg = None if arg: if arg == 'config': msg = _("""{} arg [value] arg: debuglevel, errorlevel, obsoletes, gpgcheck, assumeyes, exclude, repo_id.gpgcheck, repo_id.exclude If no value is given it prints the current value. If value is given it sets that value.""").format(arg) elif arg == 'help': msg = _("""{} [command] print help""").format(arg) elif arg in ['repo', 'repository']: msg = _("""{} arg [option] list: lists repositories and their status. option = [all \| id \| glob] enable: enable repositories. option = repository id disable: disable repositories. option = repository id""").format(arg) elif arg == 'resolvedep': msg = _("""{} resolve the transaction set""").format(arg) elif arg in ['transaction', 'ts']: msg = _("""{} arg list: lists the contents of the transaction reset: reset (zero-out) the transaction run: run the transaction""").format(arg) elif arg == 'run': msg = _("""{} run the transaction""").format(arg) elif arg in ['exit', 'quit']: msg = _("""{} exit the shell""").format(arg) if not msg: self.cli.optparser.print_help() msg = _("""Shell specific arguments: config set config options help print help repository (or repo) enable, disable or list repositories resolvedep resolve the transaction set transaction (or ts) list, reset or run the transaction set run resolve and run the transaction set exit (or quit) exit the shell""") print('\n' + msg) def _repo(self, args=None): cmd = args[0] if args else None if cmd in ['list', None]: self.onecmd('repolist ' + ' '.join(args[1:])) elif cmd in ['enable', 'disable']: repos = self.cli.base.repos fill_sack = False for repo in args[1::]: r = repos.get_matching(repo) if r: getattr(r, cmd)() fill_sack = True else: logger.critical(_("Error:") + " " + _("Unknown repo: '%s'"), self.base.output.term.bold(repo)) if fill_sack: self.base.fill_sack() # reset base._comps, as it has changed due to changing the repos self.base._comps = None else: self._help('repo') def _resolve(self, args=None): try: self.cli.base.resolve(self.cli.demands.allow_erasing) except dnf.exceptions.DepsolveError as e: print(e) def _run_script(self, file): try: with open(file, 'r') as fd: lines = fd.readlines() for line in lines: if not line.startswith('#'): self.onecmd(line) except IOError: logger.info(_('Error: Cannot open %s for reading'), self.base.output.term.bold(file)) sys.exit(1) def _transaction(self, args=None): cmd = args[0] if args else None if cmd == 'reset': self._clean() return self._resolve() if cmd in ['list', None]: if self.base._transaction: out = self.base.output.list_transaction(self.base._transaction) logger.info(out) elif cmd == 'run': try: self.base.do_transaction() except dnf.exceptions.Error as e: logger.error(_("Error:") + " " + ucd(e)) else: logger.info(_("Complete!")) self._clean() else: self._help('transaction') def _ts_run(self, args=None): self._transaction(['run']) def _quit(self, args=None): logger.info(_('Leaving Shell')) sys.exit(0) Back

Edit File : shell.py | Size : 9.61 KB

# shell.py
# Shell CLI command.
#
# Copyright (C) 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 dnf.cli import commands
from dnf.i18n import _, ucd

import dnf.util
import cmd
import copy
import dnf
import logging
import shlex
import sys

logger = logging.getLogger('dnf')

# only demands we'd like to override
class ShellDemandSheet(object):
    available_repos = True
    resolving = True
    root_user = True
    sack_activation = True

class ShellCommand(commands.Command, cmd.Cmd):

aliases = ('shell', 'sh')
    summary = _('run an interactive {prog} shell').format(prog=dnf.util.MAIN_PROG_UPPER)

MAPPING = {'repo': 'repo',
               'repository': 'repo',
               'exit': 'quit',
               'quit': 'quit',
               'run': 'ts_run',
               'ts': 'transaction',
               'transaction': 'transaction',
               'config': 'config',
               'resolvedep': 'resolve',
               'help': 'help'
               }

def __init__(self, cli):
        commands.Command.__init__(self, cli)
        cmd.Cmd.__init__(self)
        self.prompt = '> '

@staticmethod
    def set_argparser(parser):
        parser.add_argument('script', nargs='?', metavar=_('SCRIPT'),
                            help=_('Script to run in {prog} shell').format(
                                prog=dnf.util.MAIN_PROG_UPPER))

def configure(self):
        # append to ShellDemandSheet missing demands from
        # dnf.cli.demand.DemandSheet with their default values.
        default_demands = self.cli.demands
        self.cli.demands = ShellDemandSheet()
        for attr in dir(default_demands):
            if attr.startswith('__'):
                continue
            try:
                getattr(self.cli.demands, attr)
            except AttributeError:
                setattr(self.cli.demands, attr, getattr(default_demands, attr))

def run(self):
        if self.opts.script:
            self._run_script(self.opts.script)
        else:
            self.cmdloop()

def _clean(self):
        self.base._finalize_base()
        self.base._transaction = None
        self.base.fill_sack()

def onecmd(self, line):
        if not line or line == '\n':
            return
        if line == 'EOF':
            line = 'quit'
        try:
            s_line = shlex.split(line)
        except:
            self._help()
            return
        # reset option parser before each command, keep usage information
        self.cli.optparser.__init__(reset_usage=False)
        opts = self.cli.optparser.parse_main_args(s_line)
        # Disable shell recursion.
        if opts.command == 'shell':
            return
        if opts.command in self.MAPPING:
            getattr(self, '_' + self.MAPPING[opts.command])(s_line[1::])
        else:
            cmd_cls = self.cli.cli_commands.get(opts.command)
            if cmd_cls is not None:
                cmd = cmd_cls(self.cli)
                try:
                    opts = self.cli.optparser.parse_command_args(cmd, s_line)
                except SystemExit:
                    # argparse.ArgumentParser prints usage information and executes
                    # sys.exit() on problems with parsing command line arguments
                    return
                try:
                    cmd.cli.demands = copy.deepcopy(self.cli.demands)
                    cmd.configure()
                    cmd.run()
                except dnf.exceptions.Error as e:
                    logger.error(_("Error:") + " " + ucd(e))
                    return
            else:
                self._help()

def _config(self, args=None):
        def print_or_set(key, val, conf):
            if val:
                setattr(conf, key, val)
            else:
                try:
                    print('{}: {}'.format(key, getattr(conf, str(key))))
                except:
                    logger.warning(_('Unsupported key value.'))

if not args or len(args) > 2:
            self._help('config')
            return

key = args[0]
        val = args[1] if len(args) == 2 else None
        period = key.find('.')
        if period != -1:
            repo_name = key[:period]
            key = key[period+1:]
            repos = self.base.repos.get_matching(repo_name)
            for repo in repos:
                print_or_set(key, val, repo)
            if not repos:
                logger.warning(_('Could not find repository: %s'),
                               repo_name)
        else:
            print_or_set(key, val, self.base.conf)

def _help(self, args=None):
        """Output help information.

:param args: the command to output help information about. If
           *args* is an empty, general help will be output.
        """
        arg = args[0] if isinstance(args, list) and len(args) > 0 else args
        msg = None

if arg:
            if arg == 'config':
                msg = _("""{} arg [value]
  arg: debuglevel, errorlevel, obsoletes, gpgcheck, assumeyes, exclude,
        repo_id.gpgcheck, repo_id.exclude
    If no value is given it prints the current value.
    If value is given it sets that value.""").format(arg)

elif arg == 'help':
                msg = _("""{} [command]
    print help""").format(arg)

elif arg in ['repo', 'repository']:
                msg = _("""{} arg [option]
  list: lists repositories and their status. option = [all | id | glob]
  enable: enable repositories. option = repository id
  disable: disable repositories. option = repository id""").format(arg)

elif arg == 'resolvedep':
                msg = _("""{}
    resolve the transaction set""").format(arg)

elif arg in ['transaction', 'ts']:
                msg = _("""{} arg
  list: lists the contents of the transaction
  reset: reset (zero-out) the transaction
  run: run the transaction""").format(arg)

elif arg == 'run':
                msg = _("""{}
    run the transaction""").format(arg)

elif arg in ['exit', 'quit']:
                msg = _("""{}
    exit the shell""").format(arg)

if not msg:
            self.cli.optparser.print_help()
            msg = _("""Shell specific arguments:

config                   set config options
help                     print help
repository (or repo)     enable, disable or list repositories
resolvedep               resolve the transaction set
transaction (or ts)      list, reset or run the transaction set
run                      resolve and run the transaction set
exit (or quit)           exit the shell""")

print('\n' + msg)

def _repo(self, args=None):
        cmd = args[0] if args else None

if cmd in ['list', None]:
            self.onecmd('repolist ' + ' '.join(args[1:]))

elif cmd in ['enable', 'disable']:
            repos = self.cli.base.repos
            fill_sack = False
            for repo in args[1::]:
                r = repos.get_matching(repo)
                if r:
                    getattr(r, cmd)()
                    fill_sack = True
                else:
                    logger.critical(_("Error:") + " " + _("Unknown repo: '%s'"),
                                    self.base.output.term.bold(repo))
            if fill_sack:
                self.base.fill_sack()

# reset base._comps, as it has changed due to changing the repos
            self.base._comps = None

else:
            self._help('repo')

def _resolve(self, args=None):
        try:
            self.cli.base.resolve(self.cli.demands.allow_erasing)
        except dnf.exceptions.DepsolveError as e:
            print(e)

def _run_script(self, file):
        try:
            with open(file, 'r') as fd:
                lines = fd.readlines()
                for line in lines:
                    if not line.startswith('#'):
                        self.onecmd(line)
        except IOError:
            logger.info(_('Error: Cannot open %s for reading'), self.base.output.term.bold(file))
            sys.exit(1)

def _transaction(self, args=None):
        cmd = args[0] if args else None

if cmd == 'reset':
            self._clean()
            return

self._resolve()
        if cmd in ['list', None]:
            if self.base._transaction:
                out = self.base.output.list_transaction(self.base._transaction)
                logger.info(out)

elif cmd == 'run':
            try:
                self.base.do_transaction()
            except dnf.exceptions.Error as e:
                logger.error(_("Error:") + " " + ucd(e))
            else:
                logger.info(_("Complete!"))
            self._clean()

else:
            self._help('transaction')

def _ts_run(self, args=None):
        self._transaction(['run'])

def _quit(self, args=None):
        logger.info(_('Leaving Shell'))
        sys.exit(0)

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