ceph/src/boost/libs/serialization/example/fix_six.cpp

   1 #include <fstream>
   2 #include <ios>
   3 #include <iostream>
   4 #include <boost/integer_traits.hpp>
   5 #include <boost/archive/binary_iarchive.hpp>
   6
   7 void usage(const char * program_name){
   8     std::cout << "usage:";
   9     std::cout << program_name << " filename" << std::endl;
  10 }
  11
  12 int main(int argc, char *argv[]){
  13     if(argc != 2){
  14         std::cout << "invalid number of arguments" << std::endl;
  15         usage(argv[0]);
  16         return 1;
  17     }
  18     std::filebuf fb;
  19     fb.open(
  20         argv[1],
  21         std::ios_base::binary | std::ios_base::in | std::ios_base::out
  22     );
  23     if(!fb.is_open()){
  24         std::cout << argv[1] <<  " failed to open" << std::endl;
  25         return 1;
  26     }
  27     boost::archive::binary_iarchive ia(fb);
  28     boost::archive::library_version_type lvt = ia.get_library_version();
  29     if(boost::archive::library_version_type(6) != lvt){
  30         std::cout << "library version not equal to six" << std::endl;
  31         return 1;
  32     }
  33     lvt = boost::archive::library_version_type(7);
  34     fb.pubseekpos(26, std::ios_base::out);
  35     fb.sputn(reinterpret_cast<const char *>(& lvt), sizeof(lvt));
  36     fb.close();
  37 }