ci_map.h

#pragma once
 
#include <boost/algorithm/string/predicate.hpp>
#include <boost/functional/hash.hpp>
#include <unordered_map>
 
namespace crow
{
    /// Hashing function for ci_map (unordered_multimap).
    struct ci_hash
    {
        size_t operator()(const std::string& key) const
        {
            std::size_t seed = 0;
            std::locale locale;
 
            for(auto c : key)
            {
                boost::hash_combine(seed, std::toupper(c, locale));
            }
 
            return seed;
        }
    };
 
    /// Equals function for ci_map (unordered_multimap).
    struct ci_key_eq
    {
        bool operator()(const std::string& l, const std::string& r) const
        {
            return boost::iequals(l, r);
        }
    };
 
    using ci_map = std::unordered_multimap<std::string, std::string, ci_hash, ci_key_eq>;
}