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tools.py

#    Back In Time
#    Copyright (C) 2008-2009 Oprea Dan
#
#    This program is free software; you can redistribute it and/or modify
#    it under the terms of the GNU General Public License as published by
#    the Free Software Foundation; either version 2 of the License, or
#    (at your option) any later version.
#
#    This program is distributed in the hope that it will be useful,
#    but WITHOUT ANY WARRANTY; without even the implied warranty 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.


import os.path
import os


def read_file( path, default_value = None ):
      ret_val = default_value 

      try:
            file = open( path )
            ret_val = file.read()
            file.close()
      except:
            pass

      return ret_val


def read_file_lines( path, default_value = None ):
      ret_val = default_value 

      try:
            file = open( path )
            ret_val = file.readlines()
            file.close()
      except:
            pass

      return ret_val


def read_command_output( cmd ):
      ret_val = ''

      try:
            pipe = os.popen( cmd )
            ret_val = pipe.read().strip()
            pipe.close() 
      except:
            return ''

      return ret_val


def check_command( cmd ):
      cmd = cmd.strip()

      if len( cmd ) < 1:
            return False

      if os.path.isfile( cmd ):
            return True

      cmd = read_command_output( "which \"%s\"" % cmd )

      if len( cmd ) < 1:
            return False

      if os.path.isfile( cmd ):
            return True

      return False



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