compident.h
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1 /*
2  * Copyright (C) 2003-2005 Tommi Maekitalo
3  *
4  * This library is free software; you can redistribute it and/or
5  * modify it under the terms of the GNU Lesser General Public
6  * License as published by the Free Software Foundation; either
7  * version 2.1 of the License, or (at your option) any later version.
8  *
9  * As a special exception, you may use this file as part of a free
10  * software library without restriction. Specifically, if other files
11  * instantiate templates or use macros or inline functions from this
12  * file, or you compile this file and link it with other files to
13  * produce an executable, this file does not by itself cause the
14  * resulting executable to be covered by the GNU General Public
15  * License. This exception does not however invalidate any other
16  * reasons why the executable file might be covered by the GNU Library
17  * General Public License.
18  *
19  * This library is distributed in the hope that it will be useful,
20  * but WITHOUT ANY WARRANTY; without even the implied warranty of
21  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
22  * Lesser General Public License for more details.
23  *
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25  * License along with this library; if not, write to the Free Software
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27  */
28 
29 
30 #ifndef TNT_COMPIDENT_H
31 #define TNT_COMPIDENT_H
32 
33 #include <string>
34 #include <iostream>
35 
36 namespace tnt
37 {
42 struct Compident
43 {
44  std::string libname;
45  std::string compname;
46 
47 private:
48  mutable std::string compident;
49 
50 public:
51 
52  bool operator< (const Compident& ci) const
53  {
54  return libname < ci.libname
55  || (libname == ci.libname && compname < ci.compname);
56  }
57 
58  Compident() { }
59 
61  Compident(const std::string& l, const std::string& n)
62  : libname(l),
63  compname(n)
64  { }
65 
68  explicit Compident(const std::string& ident);
69 
71  const std::string& toString() const
72  { return libname.empty() ? compname : (compident.empty() ? (compident = compname + '@' + libname) : compident); }
73 
74  bool empty() const
75  { return libname.empty() && compname.empty(); }
76  void clear()
77  { libname.clear(); compname.clear(); }
78 };
79 
80 inline std::ostream& operator<< (std::ostream& out, const Compident& comp)
81 { return out << comp.toString(); }
82 
83 }
84 
85 #endif // TNT_COMPIDENT_H