mirror/example/factories/person_boostfs.cpp

This example shows how to use a factory created by the factory generator with a filesystem-based plugin to generically construct instances of classes with non default constructors, from strings read from files in a directory hierarchy.

Copyright 2006-2011 Matus Chochlik. Distributed under the Boost Software License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)

#include <mirror/mirror.hpp>
#include <mirror/stream.hpp>
#include <mirror/utils/boostfs_factory.hpp>
#include <iostream>
#include <stdexcept>

#include "./person.hpp"

int main(int argc, const char* argv[])
{
    try
    {
        using namespace mirror;
        MIRROR_USING_NAMESPACE(test);
        //
        namespace fs = boost::filesystem;
        boostfs_factory_input in;
        boostfs_factory_maker::factory<test::person>::type f = in.data();
        //
        fs::path root(argc > 1 ? argv[1] : ".");
        auto    i = fs::directory_iterator(root),
            e = fs::directory_iterator();
        int n = 0;
        while(i != e)
        {
            if(fs::is_directory(*i))
            {
                in.set(fs::path(*i));
                // make a person from the data
                test::person pers(f());
                std::cout <<
                    // and write it to std output
                    stream::to_json::from(
                        pers,
                        [&n](std::ostream& out)
                        { out << "person_" << n; }
                    ) << std::endl;
                test::person p(f());
                ++n;
            }
            ++i;
        }
    }
    catch(const std::exception& error)
    {
        std::cerr << "Error: " << error.what() << std::endl;
    }
    //
    return 0;
}