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#include <fstream>
#include <ios>
#include <iostream>
#include <boost/integer_traits.hpp>
#include <boost/archive/binary_iarchive.hpp>
void usage(const char * program_name){
std::cout << "usage:";
std::cout << program_name << " filename" << std::endl;
}
int main(int argc, char *argv[]){
if(argc != 2){
std::cout << "invalid number of arguments" << std::endl;
usage(argv[0]);
return 1;
}
std::filebuf fb;
fb.open(
argv[1],
std::ios_base::binary | std::ios_base::in | std::ios_base::out
);
if(!fb.is_open()){
std::cout << argv[1] << " failed to open" << std::endl;
return 1;
}
boost::archive::binary_iarchive ia(fb);
boost::archive::library_version_type lvt = ia.get_library_version();
if(boost::archive::library_version_type(6) != lvt){
std::cout << "library version not equal to six" << std::endl;
return 1;
}
lvt = boost::archive::library_version_type(7);
fb.pubseekpos(26, std::ios_base::out);
fb.sputn(reinterpret_cast<const char *>(& lvt), sizeof(lvt));
fb.close();
}
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