PackageSpecification.h

   1 /*
   2  * Copyright (c) 2002, Robert Collins.
   3  *
   4  *     This program is free software; you can redistribute it and/or modify
   5  *     it under the terms of the GNU General Public License as published by
   6  *     the Free Software Foundation; either version 2 of the License, or
   7  *     (at your option) any later version.
   8  *
   9  *     A copy of the GNU General Public License can be found at
  10  *     http://www.gnu.org/
  11  *
  12  * Written by Robert Collins  <rbtcollins@hotmail.com>
  13  *
  14  */
  15
  16 #ifndef SETUP_PACKAGESPECIFICATION_H
  17 #define SETUP_PACKAGESPECIFICATION_H
  18
  19 /* To parse this file */
  20 #include "String++.h"
  21 #include <iosfwd>
  22 class packageversion;
  23
  24 /* Describe a package - i.e. we need version 5 of apt */
  25
  26 class PackageSpecification
  27 {
  28 public:
  29   PackageSpecification () : _packageName (), _operator(0) {}
  30   PackageSpecification (String const &packageName);
  31   ~PackageSpecification () {}
  32
  33   class _operators;
  34
  35   String const& packageName() const;
  36   void setOperator (_operators const &);
  37   void setVersion (String const &);
  38
  39   bool satisfies (packageversion const &) const;
  40   String serialise () const;
  41
  42   PackageSpecification &operator= (PackageSpecification const &);
  43
  44   friend std::ostream &operator << (std::ostream &, PackageSpecification const &);
  45
  46   class _operators
  47     {
  48     public:
  49       _operators ():_value (0) {};
  50       _operators (int aInt) {
  51         _value = aInt;
  52         if (_value < 0 ||  _value > 4)
  53           _value = 0;
  54       }
  55       _operators & operator ++ ();
  56       bool operator == (_operators const &rhs) { return _value == rhs._value; }
  57       bool operator != (_operators const &rhs) { return _value != rhs._value; }
  58       const char *caption () const;
  59       bool satisfies (String const &lhs, String const &rhs) const;
  60     private:
  61       int _value;
  62     };
  63   static const _operators Equals;
  64   static const _operators LessThan;
  65   static const _operators MoreThan;
  66   static const _operators LessThanEquals;
  67   static const _operators MoreThanEquals;
  68
  69 private:
  70   String _packageName; /* foobar */
  71   _operators const * _operator; /* >= */
  72   String _version;       /* 1.20 */
  73 };
  74
  75 std::ostream &
  76 operator << (std::ostream &os, PackageSpecification const &);
  77
  78 #endif /* SETUP_PACKAGESPECIFICATION_H */