Re: [Boost-users] serialization question

From: Bill Lear (rael_at_[hidden])
Date: 2007-04-13 22:32:44

On Saturday, April 14, 2007 at 02:44:38 (+0200) Aljaz writes:
>> Here is how you can do the former, when saving:
>>
>>        std::ofstream ofs(file_name);
>>        boost::iostreams::filtering_ostream out;
>>        boost::iostreams::zlib_params 
>> zp(boost::iostreams::zlib::best_speed);
>>        out.push(boost::iostreams::zlib_compressor(zp));
>>        out.push(ofs);
>>        Archive oa(out);
>>        oa << BOOST_SERIALIZATION_NVP(message_request);
>
>Hey
>
>I tried doing
>
> std::stringstream ofs;
> boost::iostreams::filtering_ostream out;
> boost::iostreams::zlib_params zp(boost::iostreams::zlib::best_speed);
> out.push(boost::iostreams::zlib_compressor(zp));
> out.push(ofs);
> ofs << "some test";
>
>but it seems like it doesnt work when I run the program the size of 
>ofs.str().size() is 0.
>
>What am I doing wrong?

Well, for one, using a broken c++ library, apparently.  If you do

stringstream ofs;
ofs << "some test";

then, none of the other stuff you did makes any difference.  If you can't
get the above to work, you're in big trouble.  Here is a program that
works:

#include <sstream>
#include <iostream>

using namespace std;

int main() {
    stringstream ofs;
    ofs << "some test";
    cout << ofs.str().size() << endl;
}

Bill