Dogcows Code - chaz/yoink/blob - src/stlplus/persistence/persistent_shortcuts.tpp

   1 ////////////////////////////////////////////////////////////////////////////////
   2
   3 //   Author:    Andy Rushton
   4 //   Copyright: (c) Southampton University 1999-2004
   5 //              (c) Andy Rushton           2004-2009
   6 //   License:   BSD License, see ../docs/license.html
   7
   8 ////////////////////////////////////////////////////////////////////////////////
   9 #include <sstream>
  10 #include <fstream>
  11
  12 namespace stlplus
  13 {
  14
  15   ////////////////////////////////////////////////////////////////////////////////
  16
  17   template<typename T, class D>
  18   void dump_to_device(const T& source, std::ostream& result, D dump_fn,
  19                       dump_context::installer installer)
  20     throw(persistent_dump_failed)
  21   {
  22     dump_context context(result);
  23     context.register_all(installer);
  24     dump_fn(context, source);
  25   }
  26
  27   template<typename T, class R>
  28   void restore_from_device(std::istream& source, T& result, R restore_fn,
  29                            restore_context::installer installer)
  30     throw(persistent_restore_failed)
  31   {
  32     restore_context context(source);
  33     context.register_all(installer);
  34     restore_fn(context, result);
  35   }
  36
  37   ////////////////////////////////////////////////////////////////////////////////
  38
  39   template<typename T, class D>
  40   void dump_to_string(const T& source, std::string& result, D dump_fn,
  41                       dump_context::installer installer)
  42     throw(persistent_dump_failed)
  43   {
  44     std::ostringstream output(std::ios_base::out | std::ios_base::binary);
  45     dump_to_device<T,D>(source, output, dump_fn, installer);
  46     result = output.str();
  47   }
  48
  49   template<typename T, class R>
  50   void restore_from_string(const std::string& source, T& result, R restore_fn,
  51                            restore_context::installer installer)
  52     throw(persistent_restore_failed)
  53   {
  54     std::istringstream input(source, std::ios_base::in | std::ios_base::binary);
  55     restore_from_device<T,R>(input, result, restore_fn, installer);
  56   }
  57
  58   ////////////////////////////////////////////////////////////////////////////////
  59
  60   template<typename T, class D>
  61   void dump_to_file(const T& source, const std::string& filename, D dump_fn,
  62                     dump_context::installer installer)
  63     throw(persistent_dump_failed)
  64   {
  65     std::ofstream output(filename.c_str(), std::ios_base::out | std::ios_base::binary);
  66     dump_to_device<T,D>(source, output, dump_fn, installer);
  67   }
  68
  69   template<typename T, class R>
  70   void restore_from_file(const std::string& filename, T& result, R restore_fn,
  71                          restore_context::installer installer)
  72     throw(persistent_restore_failed)
  73   {
  74     std::ifstream input(filename.c_str(), std::ios_base::in | std::ios_base::binary);
  75     restore_from_device<T,R>(input, result, restore_fn, installer);
  76   }
  77
  78   ////////////////////////////////////////////////////////////////////////////////
  79
  80 } // end namespace stlplus