Re: [boost] Details on boost::serialization

Subject: Re: [boost] Details on boost::serialization
From: Robert Ramey (ramey_at_[hidden])
Date: 2009-08-03 13:02:08

Look into the documention for "no_header" switch on the
archive constructor.

Robert Ramey

Per Nordlöw wrote:
> I haven't found any documentation on the header bits of the archive
> formats supported by boost::serialization. These are added as default
> when I construct binary and text formats. I am especially interested
> in skipping these headers completely in my application, that is
> serializing a char
> should only result in one byte outputted to stream.
>
> Does the headers basic_binary_[io]archive.hpp play any roles in this
> case? I have tried to use them instead by I got some strange error
> messages so these are commented out here.
>
> Thanks in advance,
> Nordlöw
>
> Compileable sample code follows:
>
> #include <fstream>
>
> // #include <boost/archive/basic_text_iarchive.hpp>
> // #include <boost/archive/basic_text_oarchive.hpp>
>
> #include <boost/archive/text_iarchive.hpp>
> #include <boost/archive/text_oarchive.hpp>
>
> #include <boost/archive/binary_iarchive.hpp>
> #include <boost/archive/binary_oarchive.hpp>
>
> class gps_position
> {
> public:
>    gps_position() {};
>    gps_position(int d, size_t m, float s) : degrees(d), minutes(m),
> seconds(s) {}
> private:
>    friend class boost::serialization::access;
>    template<class Archive>
>    void serialize(Archive & ar, const unsigned int version) { ar &
> degrees & minutes & seconds; }
>    int degrees;
>    size_t minutes;
>    float seconds;
> };
>
> template<class OA, class IA>
> static void test(const gps_position & pos, const char * filename)
> {
>    std::ofstream ofs(filename); // create and open a character
> archive for output
>    {
>        OA oa(ofs);
>        oa << pos;
>    }
>
>    gps_position newg;
>    {
>        std::ifstream ifs(filename); // create and open an archive for
>        input IA ia(ifs);
>        ia >> newg;
>    }
> }
>
> int main() {
>    const gps_position p(35, 59, 24.567f);
>
>    // test<boost::archive::basic_text_oarchive,
>    //     boost::archive::basic_text_iarchive>(p,
> "boost_serialization_basic_text_archive");
>
>    test<boost::archive::text_oarchive,
>        boost::archive::text_iarchive>(p,
> "boost_serialization_text_archive");
>
>    test<boost::archive::binary_oarchive,
>        boost::archive::binary_iarchive>(p,
> "boost_serialization_binary_archive");
>
>    return 0;
> }
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