1 // Boost uuid_io.hpp header file ----------------------------------------------//
3 // Copyright 2009 Andy Tompkins.
4 // Distributed under the Boost Software License, Version 1.0. (See
5 // accompanying file LICENSE_1_0.txt or copy at
6 // http://www.boost.org/LICENSE_1_0.txt)
9 // 20 Mar 2009 - Initial Revision
10 // 28 Nov 2009 - disabled deprecated warnings for MSVC
12 #ifndef BOOST_UUID_IO_HPP
13 #define BOOST_UUID_IO_HPP
15 #include <boost/uuid/uuid.hpp>
19 #include <boost/io/ios_state.hpp>
24 #pragma warning(push) // Save warning settings.
25 #pragma warning(disable : 4996) // Disable deprecated std::ctype<char>::widen, std::copy
31 template <typename ch, typename char_traits>
32 std::basic_ostream<ch, char_traits>& operator<<(std::basic_ostream<ch, char_traits> &os, uuid const& u)
34 io::ios_flags_saver flags_saver(os);
35 io::basic_ios_fill_saver<ch, char_traits> fill_saver(os);
37 const typename std::basic_ostream<ch, char_traits>::sentry ok(os);
39 const std::streamsize width = os.width(0);
40 const std::streamsize uuid_width = 36;
41 const std::ios_base::fmtflags flags = os.flags();
42 const typename std::basic_ios<ch, char_traits>::char_type fill = os.fill();
43 if (flags & (std::ios_base::right | std::ios_base::internal)) {
44 for (std::streamsize i=uuid_width; i<width; i++) {
49 os << std::hex << std::right;
50 os.fill(os.widen('0'));
53 for (uuid::const_iterator i_data = u.begin(); i_data!=u.end(); ++i_data, ++i) {
55 os << static_cast<unsigned int>(*i_data);
56 if (i == 3 || i == 5 || i == 7 || i == 9) {
61 if (flags & std::ios_base::left) {
62 for (std::streamsize s=uuid_width; s<width; s++) {
67 os.width(0); //used the width so reset it
72 template <typename ch, typename char_traits>
73 std::basic_istream<ch, char_traits>& operator>>(std::basic_istream<ch, char_traits> &is, uuid &u)
75 const typename std::basic_istream<ch, char_traits>::sentry ok(is);
77 unsigned char data[16];
79 typedef std::ctype<ch> ctype_t;
80 ctype_t const& ctype = std::use_facet<ctype_t>(is.getloc());
84 char szdigits[] = "0123456789ABCDEF";
85 ctype.widen(szdigits, szdigits+16, xdigits);
87 ch*const xdigits_end = xdigits+16;
90 for (std::size_t i=0; i<u.size() && is; ++i) {
94 ch* f = std::find(xdigits, xdigits_end, c);
95 if (f == xdigits_end) {
96 is.setstate(std::ios_base::failbit);
100 unsigned char byte = static_cast<unsigned char>(std::distance(&xdigits[0], f));
103 c = ctype.toupper(c);
104 f = std::find(xdigits, xdigits_end, c);
105 if (f == xdigits_end) {
106 is.setstate(std::ios_base::failbit);
111 byte |= static_cast<unsigned char>(std::distance(&xdigits[0], f));
116 if (i == 3 || i == 5 || i == 7 || i == 9) {
118 if (c != is.widen('-')) is.setstate(std::ios_base::failbit);
124 std::copy(data, data+16, u.begin());
131 inline char to_char(size_t i) {
133 return static_cast<char>('0' + i);
135 return static_cast<char>('a' + (i-10));
139 inline wchar_t to_wchar(size_t i) {
141 return static_cast<wchar_t>(L'0' + i);
143 return static_cast<wchar_t>(L'a' + (i-10));
147 } // namespace detail
149 inline std::string to_string(uuid const& u)
155 for (uuid::const_iterator it_data = u.begin(); it_data!=u.end(); ++it_data, ++i) {
156 const size_t hi = ((*it_data) >> 4) & 0x0F;
157 result += detail::to_char(hi);
159 const size_t lo = (*it_data) & 0x0F;
160 result += detail::to_char(lo);
162 if (i == 3 || i == 5 || i == 7 || i == 9) {
169 #ifndef BOOST_NO_STD_WSTRING
170 inline std::wstring to_wstring(uuid const& u)
176 for (uuid::const_iterator it_data = u.begin(); it_data!=u.end(); ++it_data, ++i) {
177 const size_t hi = ((*it_data) >> 4) & 0x0F;
178 result += detail::to_wchar(hi);
180 const size_t lo = (*it_data) & 0x0F;
181 result += detail::to_wchar(lo);
183 if (i == 3 || i == 5 || i == 7 || i == 9) {
192 }} //namespace boost::uuids
194 #if defined(_MSC_VER)
195 #pragma warning(pop) // Restore warnings to previous state.
198 #endif // BOOST_UUID_IO_HPP