Chris@16: // Boost uuid_io.hpp header file  ----------------------------------------------//
Chris@16: 
Chris@16: // Copyright 2009 Andy Tompkins.
Chris@16: // Distributed under the Boost Software License, Version 1.0. (See
Chris@16: // accompanying file LICENSE_1_0.txt or copy at
Chris@16: // http://www.boost.org/LICENSE_1_0.txt)
Chris@16: 
Chris@16: // Revision History
Chris@16: //  20 Mar 2009 - Initial Revision
Chris@16: //  28 Nov 2009 - disabled deprecated warnings for MSVC
Chris@16: 
Chris@16: #ifndef BOOST_UUID_IO_HPP
Chris@16: #define BOOST_UUID_IO_HPP
Chris@16: 
Chris@16: #include <boost/uuid/uuid.hpp>
Chris@16: #include <ios>
Chris@16: #include <ostream>
Chris@16: #include <istream>
Chris@16: #include <boost/io/ios_state.hpp>
Chris@16: #include <locale>
Chris@16: #include <algorithm>
Chris@16: 
Chris@16: #if defined(_MSC_VER)
Chris@16: #pragma warning(push) // Save warning settings.
Chris@16: #pragma warning(disable : 4996) // Disable deprecated std::ctype<char>::widen, std::copy
Chris@16: #endif
Chris@16: 
Chris@16: namespace boost {
Chris@16: namespace uuids {
Chris@16: 
Chris@16: template <typename ch, typename char_traits>
Chris@16:     std::basic_ostream<ch, char_traits>& operator<<(std::basic_ostream<ch, char_traits> &os, uuid const& u)
Chris@16: {
Chris@16:     io::ios_flags_saver flags_saver(os);
Chris@16:     io::basic_ios_fill_saver<ch, char_traits> fill_saver(os);
Chris@16: 
Chris@16:     const typename std::basic_ostream<ch, char_traits>::sentry ok(os);
Chris@16:     if (ok) {
Chris@16:         const std::streamsize width = os.width(0);
Chris@16:         const std::streamsize uuid_width = 36;
Chris@16:         const std::ios_base::fmtflags flags = os.flags();
Chris@16:         const typename std::basic_ios<ch, char_traits>::char_type fill = os.fill();
Chris@16:         if (flags & (std::ios_base::right | std::ios_base::internal)) {
Chris@16:             for (std::streamsize i=uuid_width; i<width; i++) {
Chris@16:                 os << fill;
Chris@16:             }
Chris@16:         }
Chris@16: 
Chris@16:         os << std::hex;
Chris@16:         os.fill(os.widen('0'));
Chris@16: 
Chris@16:         std::size_t i=0;
Chris@16:         for (uuid::const_iterator i_data = u.begin(); i_data!=u.end(); ++i_data, ++i) {
Chris@16:             os.width(2);
Chris@16:             os << static_cast<unsigned int>(*i_data);
Chris@16:             if (i == 3 || i == 5 || i == 7 || i == 9) {
Chris@16:                 os << os.widen('-');
Chris@16:             }
Chris@16:         }
Chris@16:         
Chris@16:         if (flags & std::ios_base::left) {
Chris@101:             for (std::streamsize s=uuid_width; s<width; s++) {
Chris@16:                 os << fill;
Chris@16:             }
Chris@16:         }
Chris@16:         
Chris@16:         os.width(0); //used the width so reset it
Chris@16:     }
Chris@16:     return os;
Chris@16: }
Chris@16: 
Chris@16: template <typename ch, typename char_traits>
Chris@16:     std::basic_istream<ch, char_traits>& operator>>(std::basic_istream<ch, char_traits> &is, uuid &u)
Chris@16: {
Chris@16:     const typename std::basic_istream<ch, char_traits>::sentry ok(is);
Chris@16:     if (ok) {
Chris@16:         unsigned char data[16];
Chris@16: 
Chris@16:         typedef std::ctype<ch> ctype_t;
Chris@16:         ctype_t const& ctype = std::use_facet<ctype_t>(is.getloc());
Chris@16: 
Chris@16:         ch xdigits[16];
Chris@16:         {
Chris@16:             char szdigits[] = "0123456789ABCDEF";
Chris@16:             ctype.widen(szdigits, szdigits+16, xdigits);
Chris@16:         }
Chris@16:         ch*const xdigits_end = xdigits+16;
Chris@16: 
Chris@16:         ch c;
Chris@16:         for (std::size_t i=0; i<u.size() && is; ++i) {
Chris@16:             is >> c;
Chris@16:             c = ctype.toupper(c);
Chris@16: 
Chris@16:             ch* f = std::find(xdigits, xdigits_end, c);
Chris@16:             if (f == xdigits_end) {
Chris@16:                 is.setstate(std::ios_base::failbit);
Chris@16:                 break;
Chris@16:             }
Chris@16: 
Chris@16:             unsigned char byte = static_cast<unsigned char>(std::distance(&xdigits[0], f));
Chris@16: 
Chris@16:             is >> c;
Chris@16:             c = ctype.toupper(c);
Chris@16:             f = std::find(xdigits, xdigits_end, c);
Chris@16:             if (f == xdigits_end) {
Chris@16:                 is.setstate(std::ios_base::failbit);
Chris@16:                 break;
Chris@16:             }
Chris@16: 
Chris@16:             byte <<= 4;
Chris@16:             byte |= static_cast<unsigned char>(std::distance(&xdigits[0], f));
Chris@16: 
Chris@16:             data[i] = byte;
Chris@16: 
Chris@16:             if (is) {
Chris@16:                 if (i == 3 || i == 5 || i == 7 || i == 9) {
Chris@16:                     is >> c;
Chris@16:                     if (c != is.widen('-')) is.setstate(std::ios_base::failbit);
Chris@16:                 }
Chris@16:             }
Chris@16:         }
Chris@16: 
Chris@16:         if (is) {
Chris@16:             std::copy(data, data+16, u.begin());
Chris@16:         }
Chris@16:     }
Chris@16:     return is;
Chris@16: }
Chris@16: 
Chris@16: namespace detail {
Chris@16: inline char to_char(size_t i) {
Chris@16:     if (i <= 9) {
Chris@16:         return static_cast<char>('0' + i);
Chris@16:     } else {
Chris@16:         return static_cast<char>('a' + (i-10));
Chris@16:     }
Chris@16: }
Chris@16: 
Chris@16: inline wchar_t to_wchar(size_t i) {
Chris@16:     if (i <= 9) {
Chris@16:         return static_cast<wchar_t>(L'0' + i);
Chris@16:     } else {
Chris@16:         return static_cast<wchar_t>(L'a' + (i-10));
Chris@16:     }
Chris@16: }
Chris@16: 
Chris@16: } // namespace detail
Chris@16: 
Chris@16: inline std::string to_string(uuid const& u)
Chris@16: {
Chris@16:     std::string result;
Chris@16:     result.reserve(36);
Chris@16: 
Chris@16:     std::size_t i=0;
Chris@16:     for (uuid::const_iterator it_data = u.begin(); it_data!=u.end(); ++it_data, ++i) {
Chris@16:         const size_t hi = ((*it_data) >> 4) & 0x0F;
Chris@16:         result += detail::to_char(hi);
Chris@16: 
Chris@16:         const size_t lo = (*it_data) & 0x0F;
Chris@16:         result += detail::to_char(lo);
Chris@16: 
Chris@16:         if (i == 3 || i == 5 || i == 7 || i == 9) {
Chris@16:             result += '-';
Chris@16:         }
Chris@16:     }
Chris@16:     return result;
Chris@16: }
Chris@16: 
Chris@16: #ifndef BOOST_NO_STD_WSTRING
Chris@16: inline std::wstring to_wstring(uuid const& u)
Chris@16: {
Chris@16:     std::wstring result;
Chris@16:     result.reserve(36);
Chris@16: 
Chris@16:     std::size_t i=0;
Chris@16:     for (uuid::const_iterator it_data = u.begin(); it_data!=u.end(); ++it_data, ++i) {
Chris@16:         const size_t hi = ((*it_data) >> 4) & 0x0F;
Chris@16:         result += detail::to_wchar(hi);
Chris@16: 
Chris@16:         const size_t lo = (*it_data) & 0x0F;
Chris@16:         result += detail::to_wchar(lo);
Chris@16: 
Chris@16:         if (i == 3 || i == 5 || i == 7 || i == 9) {
Chris@16:             result += L'-';
Chris@16:         }
Chris@16:     }
Chris@16:     return result;
Chris@16: }
Chris@16: 
Chris@16: #endif
Chris@16: 
Chris@16: }} //namespace boost::uuids
Chris@16: 
Chris@16: #if defined(_MSC_VER)
Chris@16: #pragma warning(pop) // Restore warnings to previous state.
Chris@16: #endif
Chris@16: 
Chris@16: #endif // BOOST_UUID_IO_HPP