1#!/usr/bin/env python 2# -*- coding: utf-8 -*- 3 4""" 5This file is part of cpe package. 6 7This module allows to create an empty component of CPE name. 8 9Copyright (C) 2013 Alejandro Galindo García, Roberto Abdelkader Martínez Pérez 10 11This program is free software: you can redistribute it and/or modify 12it under the terms of the GNU Lesser General Public License as published by 13the Free Software Foundation, either version 3 of the License, or 14(at your option) any later version. 15 16This program is distributed in the hope that it will be useful, 17but WITHOUT ANY WARRANTY; without even the implied warranty of 18MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 19GNU Lesser General Public License for more details. 20 21You should have received a copy of the GNU Lesser General Public License 22along with this program. If not, see <http://www.gnu.org/licenses/>. 23 24For any problems using the cpe package, or general questions and 25feedback about it, please contact: 26 27- Alejandro Galindo García: galindo.garcia.alejandro@gmail.com 28- Roberto Abdelkader Martínez Pérez: robertomartinezp@gmail.com 29""" 30 31from .cpecomp_logical import CPEComponentLogical 32 33 34class CPEComponentEmpty(CPEComponentLogical): 35 """ 36 Represents an empty component of CPE name, 37 compatible with the components of all versions of CPE specification. 38 39 For example, in version 1.1 of CPE specification, an empty component 40 is version attribute in CPE name cpe:/microsft:windows::sp2. 41 """ 42 43 #################### 44 # OBJECT METHODS # 45 #################### 46 47 def __eq__(self, other): 48 """ 49 Returns True if other (first element of operation) and 50 self (second element of operation) are equal components, 51 false otherwise. 52 53 :param CPEComponent other: component to compare 54 :returns: True if other == self, False otherwise 55 :rtype: boolean 56 """ 57 58 from .cpecomp_anyvalue import CPEComponentAnyValue 59 from .cpecomp_undefined import CPEComponentUndefined 60 61 return (isinstance(other, CPEComponentEmpty) or 62 isinstance(other, CPEComponentUndefined) or 63 isinstance(other, CPEComponentAnyValue)) 64 65 def __init__(self): 66 """ 67 Initializes the component. 68 """ 69 70 super(CPEComponentEmpty, self).__init__( 71 CPEComponentLogical._VALUE_INT_EMPTY) 72 73 def __str__(self): 74 """ 75 Returns a human-readable representation of CPE component. 76 77 :returns: Representation of CPE component as string 78 :rtype: string 79 """ 80 81 return "<EMPTY>" 82 83 84if __name__ == "__main__": 85 import doctest 86 doctest.testmod() 87 doctest.testfile('../tests/testfile_cpecomp_empty.txt') 88