boost/libs/locale/performance/perf_convert.cpp

//
//  Copyright (c) 2009-2011 Artyom Beilis (Tonkikh)
//
//  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 <iostream>
#include <string>
#include <set>

#include <boost/locale.hpp>

using namespace std;
using namespace boost::locale;

int main(int argc,char **argv)
{
    if(argc!=2) {
        std::cerr << "Usage backend locale" << std::endl;
        return 1;
    }
    /// Set global locale to requested

    /// Create a set that includes all strings sorted according to ABC order
    /// std::locale can be used as object for comparison
    std::vector<std::string> all;
    typedef std::set<std::string,std::locale> set_type;
    set_type all_strings;

    /// Read all strings into the set
    while(!cin.eof()) {
        std::string tmp;
        getline(cin,tmp);
        all.push_back(tmp);
    }

    {
        boost::locale::localization_backend_manager mgr = boost::locale::localization_backend_manager::global();
        mgr.select(argv[1]);
        generator gen(mgr);
        std::locale::global(gen(argv[2]));
        for(int i=0;i<10000;i++) {
            for(unsigned j=0;j<all.size();j++) {
                boost::locale::to_upper(all[j]);
                boost::locale::to_lower(all[j]);
                if(i==0) {
                    std::cout << boost::locale::to_upper(all[j]) << std::endl; 
                    std::cout << boost::locale::to_lower(all[j]) << std::endl; 
                }
            }
        }
    }

}
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