Sprout/sprout/uuid/md5_name_generator.hpp

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#ifndef SPROUT_UUID_MD5_NAME_GENERATOR_HPP
#define SPROUT_UUID_MD5_NAME_GENERATOR_HPP
#include <sprout/config.hpp>
#include <sprout/string.hpp>
#include <sprout/uuid/uuid.hpp>
#include <sprout/uuid/namespaces.hpp>
#include <sprout/checksum/md5.hpp>
namespace sprout {
namespace uuids {
//
// md5_name_generator
//
class md5_name_generator {
public:
typedef sprout::uuids::uuid result_type;
private:
typedef typename result_type::value_type value_type;
private:
sprout::md5 sum_;
private:
SPROUT_CONSTEXPR result_type sha_to_uuid_1(sprout::md5::value_type const& value) const {
return result_type{{
value[0],
value[1],
value[2],
value[3],
value[4],
value[5],
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static_cast<value_type>((value[6] & 0x3F) | 0x30),
value[7],
static_cast<value_type>((value[8] & 0xBF) | 0x80),
value[9],
value[10],
value[11],
value[12],
value[13],
value[14],
value[15]
}};
}
SPROUT_CONSTEXPR result_type sha_to_uuid(sprout::md5 const& sha) const {
return sha_to_uuid_1(sha.checksum());
}
public:
SPROUT_CONSTEXPR md5_name_generator()
: sum_(sprout::md5::const_type().process_range(sprout::uuids::uuid{{0}}))
{}
explicit SPROUT_CONSTEXPR md5_name_generator(sprout::uuids::uuid const& namespace_uuid)
: sum_(sprout::md5::const_type().process_range(namespace_uuid))
{}
template<typename Elem, std::size_t N, typename Traits>
SPROUT_CONSTEXPR result_type operator()(sprout::basic_string<Elem, N, Traits> const& name) const {
return sha_to_uuid(sum_.process_range(name));
}
SPROUT_CONSTEXPR result_type operator()(char const* name) const {
return sha_to_uuid(sum_.process_bytes(name, sprout::char_traits<char>::length(name)));
}
SPROUT_CONSTEXPR result_type operator()(wchar_t const* name) const {
return sha_to_uuid(sum_.process_bytes(name, sprout::char_traits<wchar_t>::length(name)));
}
SPROUT_CONSTEXPR result_type operator()(char16_t const* name) const {
return sha_to_uuid(sum_.process_bytes(name, sprout::char_traits<char16_t>::length(name)));
}
SPROUT_CONSTEXPR result_type operator()(char32_t const* name) const {
return sha_to_uuid(sum_.process_bytes(name, sprout::char_traits<char32_t>::length(name)));
}
};
//
// make_uuid3
//
template<typename Elem, std::size_t N, typename Traits>
inline SPROUT_CONSTEXPR sprout::uuids::uuid
make_uuid3(sprout::basic_string<Elem, N, Traits> const& name) {
return sprout::uuids::md5_name_generator()(name);
}
inline SPROUT_CONSTEXPR sprout::uuids::uuid
make_uuid3(char const* name) {
return sprout::uuids::md5_name_generator()(name);
}
inline SPROUT_CONSTEXPR sprout::uuids::uuid
make_uuid3(wchar_t const* name) {
return sprout::uuids::md5_name_generator()(name);
}
inline SPROUT_CONSTEXPR sprout::uuids::uuid
make_uuid3(char16_t const* name) {
return sprout::uuids::md5_name_generator()(name);
}
inline SPROUT_CONSTEXPR sprout::uuids::uuid
make_uuid3(char32_t const* name) {
return sprout::uuids::md5_name_generator()(name);
}
template<typename Elem, std::size_t N, typename Traits>
inline SPROUT_CONSTEXPR sprout::uuids::uuid
make_uuid3(sprout::uuids::uuid const& namespace_uuid, sprout::basic_string<Elem, N, Traits> const& name) {
return sprout::uuids::md5_name_generator(namespace_uuid)(name);
}
inline SPROUT_CONSTEXPR sprout::uuids::uuid
make_uuid3(sprout::uuids::uuid const& namespace_uuid, char const* name) {
return sprout::uuids::md5_name_generator(namespace_uuid)(name);
}
inline SPROUT_CONSTEXPR sprout::uuids::uuid
make_uuid3(sprout::uuids::uuid const& namespace_uuid, wchar_t const* name) {
return sprout::uuids::md5_name_generator(namespace_uuid)(name);
}
inline SPROUT_CONSTEXPR sprout::uuids::uuid
make_uuid3(sprout::uuids::uuid const& namespace_uuid, char16_t const* name) {
return sprout::uuids::md5_name_generator(namespace_uuid)(name);
}
inline SPROUT_CONSTEXPR sprout::uuids::uuid
make_uuid3(sprout::uuids::uuid const& namespace_uuid, char32_t const* name) {
return sprout::uuids::md5_name_generator(namespace_uuid)(name);
}
inline SPROUT_CONSTEXPR sprout::uuids::md5_name_generator
make_uuid3() {
return sprout::uuids::md5_name_generator();
}
inline SPROUT_CONSTEXPR sprout::uuids::md5_name_generator
make_uuid3(sprout::uuids::uuid const& namespace_uuid) {
return sprout::uuids::md5_name_generator(namespace_uuid);
}
//
// make_uuid3_dns
// make_uuid3_url
// make_uuid3_oid
// make_uuid3_x500
//
inline SPROUT_CONSTEXPR sprout::uuids::md5_name_generator
make_uuid3_dns() {
return sprout::uuids::md5_name_generator(sprout::uuids::namespace_dns_uuid());
}
inline SPROUT_CONSTEXPR sprout::uuids::md5_name_generator
make_uuid3_url() {
return sprout::uuids::md5_name_generator(sprout::uuids::namespace_url_uuid());
}
inline SPROUT_CONSTEXPR sprout::uuids::md5_name_generator
make_uuid3_oid() {
return sprout::uuids::md5_name_generator(sprout::uuids::namespace_oid_uuid());
}
inline SPROUT_CONSTEXPR sprout::uuids::md5_name_generator
make_uuid3_x500() {
return sprout::uuids::md5_name_generator(sprout::uuids::namespace_x500_uuid());
}
} // namespace uuids
} // namespace sprout
#endif // #ifndef SPROUT_UUID_MD5_NAME_GENERATOR_HPP