mirror of
https://github.com/bolero-MURAKAMI/Sprout
synced 2024-11-12 21:09:01 +00:00
184 lines
6.9 KiB
C++
184 lines
6.9 KiB
C++
#ifndef SPROUT_UUID_UUID_IO_HPP
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#define SPROUT_UUID_UUID_IO_HPP
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#include <cstddef>
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#include <algorithm>
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#include <iterator>
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#include <ios>
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#include <ostream>
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#include <istream>
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#include <locale>
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#include <sprout/config.hpp>
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#include <sprout/string.hpp>
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#include <sprout/uuid/uuid.hpp>
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#include <sprout/uuid/detail/table.hpp>
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#include <sprout/detail/io/ios_state.hpp>
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namespace sprout {
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namespace uuids {
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//
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// operator>>
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//
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template<typename Elem, typename Traits>
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std::basic_istream<Elem, Traits>& operator>>(std::basic_istream<Elem, Traits>& lhs, sprout::uuids::uuid& rhs) {
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typedef typename std::basic_ios<Elem, Traits>::char_type char_type;
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typename std::basic_istream<Elem, Traits>::sentry const ok(lhs);
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typedef std::ctype<Elem> ctype_type;
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if (ok) {
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sprout::uuids::uuid::value_type data[16];
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ctype_type const& ctype = std::use_facet<ctype_type>(lhs.getloc());
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char_type xdigits[16];
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{
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char const szdigits[] = "0123456789ABCDEF";
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ctype.widen(szdigits, szdigits + 16, xdigits);
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}
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char_type const* const xdigits_end = xdigits + 16;
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char_type c;
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for (sprout::uuids::uuid::size_type i = 0, last = rhs.size(); i < last && lhs; ++i) {
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lhs >> c;
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c = ctype.toupper(c);
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char_type const* f = std::find(xdigits, xdigits_end, c);
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if (f == xdigits_end) {
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lhs.setstate(std::ios_base::failbit);
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break;
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}
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sprout::uuids::uuid::value_type byte = static_cast<sprout::uuids::uuid::value_type>(std::distance(&xdigits[0], f));
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lhs >> c;
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c = ctype.toupper(c);
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f = std::find(xdigits, xdigits_end, c);
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if (f == xdigits_end) {
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lhs.setstate(std::ios_base::failbit);
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break;
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}
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byte <<= 4;
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byte |= static_cast<sprout::uuids::uuid::value_type>(std::distance(&xdigits[0], f));
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data[i] = byte;
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if (lhs) {
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if (i == 3 || i == 5 || i == 7 || i == 9) {
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lhs >> c;
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if (c != lhs.widen('-')) {
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lhs.setstate(std::ios_base::failbit);
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break;
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}
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}
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}
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}
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if (lhs) {
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std::copy(data, data + 16, rhs.begin());
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}
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}
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return lhs;
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}
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//
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// operator<<
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//
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template<typename Elem, typename Traits>
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std::basic_ostream<Elem, Traits>& operator<<(std::basic_ostream<Elem, Traits>& lhs, sprout::uuids::uuid const& rhs) {
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sprout::detail::io::ios_flags_saver flags_saver(lhs);
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sprout::detail::io::basic_ios_fill_saver<Elem, Traits> fill_saver(lhs);
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typename std::basic_ostream<Elem, Traits>::sentry const ok(lhs);
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if (ok) {
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std::streamsize const width = lhs.width(0);
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std::streamsize const uuid_width = 36;
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std::ios_base::fmtflags const flags = lhs.flags();
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typename std::basic_ios<Elem, Traits>::char_type const fill = lhs.fill();
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if (flags & (std::ios_base::right | std::ios_base::internal)) {
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for (std::streamsize i = uuid_width; i < width; ++i) {
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lhs << fill;
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}
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}
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lhs << std::hex;
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lhs.fill(lhs.widen('0'));
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std::size_t i = 0;
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for (sprout::uuids::uuid::const_iterator i_data = rhs.begin(), i_last = rhs.end(); i_data != i_last; ++i_data, ++i) {
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lhs.width(2);
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lhs << static_cast<unsigned>(*i_data);
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if (i == 3 || i == 5 || i == 7 || i == 9) {
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lhs << lhs.widen('-');
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}
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}
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if (flags & std::ios_base::left) {
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for (std::streamsize i = uuid_width; i < width; ++i) {
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lhs << fill;
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}
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}
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lhs.width(0);
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}
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return lhs;
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}
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//
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// to_string_of
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//
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template<typename Elem, typename Traits = sprout::char_traits<Elem> >
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inline SPROUT_CONSTEXPR sprout::basic_string<Elem, 36, Traits> to_string_of(sprout::uuids::uuid const& u) {
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return sprout::basic_string<Elem, 36, Traits>{
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{
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sprout::uuids::detail::digits<Elem>::table[(u[0] >> 4) & 0x0F],
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sprout::uuids::detail::digits<Elem>::table[(u[0]) & 0x0F],
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sprout::uuids::detail::digits<Elem>::table[(u[1] >> 4) & 0x0F],
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sprout::uuids::detail::digits<Elem>::table[(u[1]) & 0x0F],
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sprout::uuids::detail::digits<Elem>::table[(u[2] >> 4) & 0x0F],
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sprout::uuids::detail::digits<Elem>::table[(u[2]) & 0x0F],
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sprout::uuids::detail::digits<Elem>::table[(u[3] >> 4) & 0x0F],
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sprout::uuids::detail::digits<Elem>::table[(u[3]) & 0x0F],
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sprout::uuids::detail::digits<Elem>::dash,
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sprout::uuids::detail::digits<Elem>::table[(u[4] >> 4) & 0x0F],
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sprout::uuids::detail::digits<Elem>::table[(u[4]) & 0x0F],
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sprout::uuids::detail::digits<Elem>::table[(u[5] >> 4) & 0x0F],
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sprout::uuids::detail::digits<Elem>::table[(u[5]) & 0x0F],
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sprout::uuids::detail::digits<Elem>::dash,
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sprout::uuids::detail::digits<Elem>::table[(u[6] >> 4) & 0x0F],
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sprout::uuids::detail::digits<Elem>::table[(u[6]) & 0x0F],
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sprout::uuids::detail::digits<Elem>::table[(u[7] >> 4) & 0x0F],
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sprout::uuids::detail::digits<Elem>::table[(u[7]) & 0x0F],
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sprout::uuids::detail::digits<Elem>::dash,
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sprout::uuids::detail::digits<Elem>::table[(u[8] >> 4) & 0x0F],
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sprout::uuids::detail::digits<Elem>::table[(u[8]) & 0x0F],
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sprout::uuids::detail::digits<Elem>::table[(u[9] >> 4) & 0x0F],
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sprout::uuids::detail::digits<Elem>::table[(u[9]) & 0x0F],
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sprout::uuids::detail::digits<Elem>::dash,
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sprout::uuids::detail::digits<Elem>::table[(u[10] >> 4) & 0x0F],
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sprout::uuids::detail::digits<Elem>::table[(u[10]) & 0x0F],
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sprout::uuids::detail::digits<Elem>::table[(u[11] >> 4) & 0x0F],
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sprout::uuids::detail::digits<Elem>::table[(u[11]) & 0x0F],
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sprout::uuids::detail::digits<Elem>::table[(u[12] >> 4) & 0x0F],
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sprout::uuids::detail::digits<Elem>::table[(u[12]) & 0x0F],
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sprout::uuids::detail::digits<Elem>::table[(u[13] >> 4) & 0x0F],
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sprout::uuids::detail::digits<Elem>::table[(u[13]) & 0x0F],
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sprout::uuids::detail::digits<Elem>::table[(u[14] >> 4) & 0x0F],
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sprout::uuids::detail::digits<Elem>::table[(u[14]) & 0x0F],
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sprout::uuids::detail::digits<Elem>::table[(u[15] >> 4) & 0x0F],
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sprout::uuids::detail::digits<Elem>::table[(u[15]) & 0x0F]
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},
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36
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};
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}
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//
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// to_string
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//
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inline SPROUT_CONSTEXPR sprout::basic_string<char, 36> to_string(sprout::uuids::uuid const& u) {
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return sprout::uuids::to_string_of<char>(u);
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}
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//
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// to_wstring
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//
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inline SPROUT_CONSTEXPR sprout::basic_string<wchar_t, 36> to_wstring(sprout::uuids::uuid const& u) {
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return sprout::uuids::to_string_of<wchar_t>(u);
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}
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//
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// to_u16string
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//
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inline SPROUT_CONSTEXPR sprout::basic_string<char16_t, 36> to_u16string(sprout::uuids::uuid const& u) {
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return sprout::uuids::to_string_of<char16_t>(u);
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}
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//
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// to_u32string
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//
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inline SPROUT_CONSTEXPR sprout::basic_string<char32_t, 36> to_u32string(sprout::uuids::uuid const& u) {
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return sprout::uuids::to_string_of<char32_t>(u);
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}
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} // namespace uuids
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} // namespace sprout
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#endif // #ifndef SPROUT_UUID_UUID_IO_HPP
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