Disk ARchive  2.4.17
hide_file.hpp
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1 /*********************************************************************/
2 // dar - disk archive - a backup/restoration program
3 // Copyright (C) 2002-2052 Denis Corbin
4 //
5 // This program is free software; you can redistribute it and/or
6 // modify it under the terms of the GNU General Public License
7 // as published by the Free Software Foundation; either version 2
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9 //
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13 // GNU General Public License for more details.
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19 // to contact the author : http://dar.linux.free.fr/email.html
20 /*********************************************************************/
21 
25 
26 #ifndef HIDE_FILE_HPP
27 #define HIDE_FILE_HPP
28 
29 #include "../my_config.h"
30 #include <vector>
31 #include "infinint.hpp"
32 #include "generic_file.hpp"
33 
34 using namespace libdar;
35 using namespace std;
36 
39 
40 class hide_file : public generic_file
41 {
42 public:
43  hide_file(generic_file &f);
44 
45  bool skip(const infinint & pos);
46  bool skip_to_eof();
47  bool skip_relative(S_I x);
48  infinint get_position();
49 
50 protected:
51  struct partie
52  {
53  infinint debut, longueur; // debut is the offset in ref file
54  infinint offset; // offset in the resulting file
55  };
56 
57  vector <partie> morceau;
58  generic_file *ref;
59 
60  U_I inherited_read(char *a, U_I size);
61  void inherited_write(const char *a, size_t size);
62  void inherited_sync_write() {};
63  void inherited_terminate() {};
64 
65  virtual void fill_morceau() = 0;
66  // the inherited classes have with this method
67  // to fill the "morceau" variable that defines
68  // the portions
69 
70 private:
71  U_I pos_index;
72  infinint pos_relicat;
73  bool is_init;
74 
75  void init();
76 };
77 
79 
80 
81 #endif
class generic_file is defined here as well as class fichierthe generic_file interface is widely used ...
STL namespace.
switch module to limitint (32 ou 64 bits integers) or infinint
this is the interface class from which all other data transfer classes inherit
the arbitrary large positive integer class
libdar namespace encapsulate all libdar symbols
Definition: archive.hpp:43