c_string.hpp

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#ifndef SILICIUM_C_STRING_HPP
#define SILICIUM_C_STRING_HPP

#include <cassert>
#include <silicium/is_handle.hpp>

namespace Si
{
    template <class Char>
    struct basic_c_string
    {
        typedef Char char_type;

        basic_c_string() BOOST_NOEXCEPT
            : m_begin(nullptr)
        {
        }

        explicit basic_c_string(char_type const *begin)
            : m_begin(begin)
        {
            assert(m_begin);
        }

        template <size_t N>
        basic_c_string(char_type const (&literal)[N])
            : m_begin(&literal[0])
        {
        }

        SILICIUM_USE_RESULT
        bool is_set() const BOOST_NOEXCEPT
        {
            return m_begin != nullptr;
        }

        SILICIUM_USE_RESULT
        bool empty() const BOOST_NOEXCEPT
        {
            assert(is_set());
            return (*m_begin == '\0');
        }

        SILICIUM_USE_RESULT
        char_type const *c_str() const BOOST_NOEXCEPT
        {
            assert(is_set());
            return m_begin;
        }

    private:

        char_type const *m_begin;
    };

    typedef basic_c_string<char> c_string;
    typedef basic_c_string<wchar_t> cw_string;

    BOOST_STATIC_ASSERT(is_handle<c_string>::value);
    BOOST_STATIC_ASSERT(is_handle<cw_string>::value);

    typedef
#ifdef _WIN32
        cw_string
#else
        c_string
#endif
        os_c_string;

    typedef os_c_string native_path_string;

#ifdef _WIN32
#   define SILICIUM_SYSTEM_LITERAL(x) L ## x
#else
#   define SILICIUM_SYSTEM_LITERAL(x) x
#endif
}

#endif