Synnefo » ./kamaki

#!/usr/bin/env python

# Copyright 2012 GRNET S.A. All rights reserved.

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from kamaki.cli.command_tree import CommandTree

from kamaki.cli.argument import IntArgument, ValueArgument

from kamaki.cli.argument import ArgumentParseManager

from kamaki.cli.history import History

from kamaki.cli import command

from kamaki.cli.commands import _command_init

from kamaki.cli import _exec_cmd, _print_error_message

from kamaki.cli.errors import CLIError, raiseCLIError

from kamaki.cli.utils import split_input

from kamaki.clients import ClientError

history_cmds = CommandTree('history', 'Command history')

_commands = [history_cmds]

class _init_history(_command_init):

    def main(self):

        self.history = History(self.config.get('history', 'file'))

@command(history_cmds)

class history_show(_init_history):

    """Show history [containing terms...]"""

    def __init__(self, arguments={}):

        super(self.__class__, self).__init__(arguments)

        self.arguments['limit'] =\

            IntArgument('number of lines to show', '-n', default=0)

        self.arguments['match'] =\

            ValueArgument('show lines that match all given terms', '--match')

    def main(self):

        super(self.__class__, self).main()

        ret = self.history.get(match_terms=self.get_argument('match'),

            limit=self.get_argument('limit'))

        print(''.join(ret))

@command(history_cmds)

class history_clean(_init_history):

    """Clean up history"""

    def main(self):

        super(self.__class__, self).main()

        self.history.clean()

@command(history_cmds)

class history_load(_init_history):

    """Re-call a previously called command"""

    _cmd_tree = None

    def __init__(self, arguments={}, cmd_tree=None):

        super(self.__class__, self).__init__(arguments)

        self._cmd_tree = cmd_tree

    def _run_from_line(self, line):

        terms = split_input(line)

        cmd, args = self._cmd_tree.find_best_match(terms)

        if not cmd.is_command:

            return

        try:

            instance = cmd.get_class()(self.arguments)

            instance.config = self.config

            prs = ArgumentParseManager(cmd.path.split(),

                dict(instance.arguments))

            prs.syntax = '%s %s' % (cmd.path.replace('_', ' '),

                cmd.get_class().syntax)

            prs.parse(args)

            _exec_cmd(instance, prs.unparsed, prs.parser.print_help)

        except (CLIError, ClientError) as err:

            _print_error_message(err)

        except Exception as e:

            print('Execution of [ %s ] failed' % line)

            print('\t%s' % e)

    def _get_cmd_ids(self, cmd_ids):

        cmd_id_list = []

        for cmd_str in cmd_ids:

            num1, sep, num2 = cmd_str.partition('-')

            try:

                if sep:

                    for i in range(int(num1), int(num2) + 1):

                        cmd_id_list.append(i)

                else:

                    cmd_id_list.append(int(cmd_str))

            except ValueError:

                raiseCLIError('Invalid history id %s' % cmd_str)

        return cmd_id_list

    def main(self, *command_ids):

        super(self.__class__, self).main()

        cmd_list = self._get_cmd_ids(command_ids)

        for cmd_id in cmd_list:

            r = self.history.retrieve(cmd_id)

            print(r[:-1])

            if self._cmd_tree:

                r = r[len('kamaki '):-1] if r.startswith('kamaki ') else r[:-1]

                self._run_from_line(r)