# Copyright 2007, Red Hat, Inc
# James Bowes <jbowes@redhat.com>
# Steve 'Ashcrow' Milner <smilner@redhat.com>
#
# This software may be freely redistributed under the terms of the GNU
# general public license.
#
# 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., 675 Mass Ave, Cambridge, MA 02139, USA.

"""
Abitrary command execution module for func.
"""

import func_module
import sub_process

class Command(func_module.FuncModule):

    version = "0.0.1"
    api_version = "0.0.1"
    description = "Works with shell commands."

    def run(self, command):
        """
        Runs a command, returning the return code, stdout, and stderr as a tuple.
        NOT FOR USE WITH INTERACTIVE COMMANDS.
        """

        cmdref = sub_process.Popen(command.split(), stdout=sub_process.PIPE,
                                   stderr=sub_process.PIPE, shell=False)
        data = cmdref.communicate()
        return (cmdref.returncode, data[0], data[1])

    def exists(self, command):
        """
        Checks to see if a command exists on the target system(s).
        """
        import os

        if os.access(command, os.X_OK):
            return True
        return False