Disk ARchive  2.6.2
Full featured and portable backup and archiving tool
hide_file.hpp
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2 // dar - disk archive - a backup/restoration program
3 // Copyright (C) 2002-2019 Denis Corbin
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21 
25 
26 #ifndef HIDE_FILE_HPP
27 #define HIDE_FILE_HPP
28 
29 #include "../my_config.h"
30 #include <vector>
31 #include "libdar.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  hide_file(const hide_file & ref) = default;
45  hide_file & operator = (const hide_file & ref) = default;
46  ~hide_file() = default;
47 
48  virtual bool skippable(skippability direction, const infinint & amount) override { return true; };
49  virtual bool skip(const infinint & pos) override;
50  virtual bool skip_to_eof() override;
51  virtual bool skip_relative(S_I x) override;
52  virtual infinint get_position() const override;
53 
54 protected:
55  struct partie
56  {
57  infinint debut, longueur; // debut is the offset in ref file
58  infinint offset; // offset in the resulting file
59  };
60 
61  vector <partie> morceau;
62  generic_file *ref;
63 
64  virtual void inherited_read_ahead(const infinint & amount) override { ref->read_ahead(amount); };
65  virtual U_I inherited_read(char *a, U_I size) override;
66  virtual void inherited_write(const char *a, size_t size) override;
67  virtual void inherited_sync_write() override {};
68  virtual void inherited_flush_read() override {};
69  virtual void inherited_terminate() override {};
70 
71  virtual void fill_morceau() = 0;
72  // the inherited classes have with this method
73  // to fill the "morceau" variable that defines
74  // the portions
75 
76 private:
77  U_I pos_index;
78  infinint pos_relicat;
79  bool is_init;
80 
81  void init() const;
82 };
83 
85 
86 
87 #endif
class generic_file is defined here as well as class fichierthe generic_file interface is widely used ...
STL namespace.
void read_ahead(const infinint &amount)
this is the interface class from which all other data transfer classes inherit
the main file of the libdar API definitions
the arbitrary large positive integer class
libdar namespace encapsulate all libdar symbols
Definition: archive.hpp:46