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1 | // Boost uuid_io.hpp header file ----------------------------------------------// |
2 | ||
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) | |
7 | ||
8 | // Revision History | |
9 | // 20 Mar 2009 - Initial Revision | |
10 | // 28 Nov 2009 - disabled deprecated warnings for MSVC | |
11 | ||
12 | #ifndef BOOST_UUID_IO_HPP | |
13 | #define BOOST_UUID_IO_HPP | |
14 | ||
15 | #include <boost/uuid/uuid.hpp> | |
16 | #include <ios> | |
17 | #include <ostream> | |
18 | #include <istream> | |
19 | #include <boost/io/ios_state.hpp> | |
20 | #include <locale> | |
21 | #include <algorithm> | |
22 | ||
23 | #if defined(_MSC_VER) | |
24 | #pragma warning(push) // Save warning settings. | |
25 | #pragma warning(disable : 4996) // Disable deprecated std::ctype<char>::widen, std::copy | |
26 | #endif | |
27 | ||
28 | namespace boost { | |
29 | namespace uuids { | |
30 | ||
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) | |
33 | { | |
34 | io::ios_flags_saver flags_saver(os); | |
35 | io::basic_ios_fill_saver<ch, char_traits> fill_saver(os); | |
36 | ||
37 | const typename std::basic_ostream<ch, char_traits>::sentry ok(os); | |
38 | if (ok) { | |
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++) { | |
45 | os << fill; | |
46 | } | |
47 | } | |
48 | ||
49 | os << std::hex << std::right; | |
50 | os.fill(os.widen('0')); | |
51 | ||
52 | std::size_t i=0; | |
53 | for (uuid::const_iterator i_data = u.begin(); i_data!=u.end(); ++i_data, ++i) { | |
54 | os.width(2); | |
55 | os << static_cast<unsigned int>(*i_data); | |
56 | if (i == 3 || i == 5 || i == 7 || i == 9) { | |
57 | os << os.widen('-'); | |
58 | } | |
59 | } | |
60 | ||
61 | if (flags & std::ios_base::left) { | |
62 | for (std::streamsize s=uuid_width; s<width; s++) { | |
63 | os << fill; | |
64 | } | |
65 | } | |
66 | ||
67 | os.width(0); //used the width so reset it | |
68 | } | |
69 | return os; | |
70 | } | |
71 | ||
72 | template <typename ch, typename char_traits> | |
73 | std::basic_istream<ch, char_traits>& operator>>(std::basic_istream<ch, char_traits> &is, uuid &u) | |
74 | { | |
75 | const typename std::basic_istream<ch, char_traits>::sentry ok(is); | |
76 | if (ok) { | |
77 | unsigned char data[16]; | |
78 | ||
79 | typedef std::ctype<ch> ctype_t; | |
80 | ctype_t const& ctype = std::use_facet<ctype_t>(is.getloc()); | |
81 | ||
82 | ch xdigits[16]; | |
83 | { | |
84 | char szdigits[] = "0123456789ABCDEF"; | |
85 | ctype.widen(szdigits, szdigits+16, xdigits); | |
86 | } | |
87 | ch*const xdigits_end = xdigits+16; | |
88 | ||
89 | ch c; | |
90 | for (std::size_t i=0; i<u.size() && is; ++i) { | |
91 | is >> c; | |
92 | c = ctype.toupper(c); | |
93 | ||
94 | ch* f = std::find(xdigits, xdigits_end, c); | |
95 | if (f == xdigits_end) { | |
96 | is.setstate(std::ios_base::failbit); | |
97 | break; | |
98 | } | |
99 | ||
100 | unsigned char byte = static_cast<unsigned char>(std::distance(&xdigits[0], f)); | |
101 | ||
102 | is >> c; | |
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); | |
107 | break; | |
108 | } | |
109 | ||
110 | byte <<= 4; | |
111 | byte |= static_cast<unsigned char>(std::distance(&xdigits[0], f)); | |
112 | ||
113 | data[i] = byte; | |
114 | ||
115 | if (is) { | |
116 | if (i == 3 || i == 5 || i == 7 || i == 9) { | |
117 | is >> c; | |
118 | if (c != is.widen('-')) is.setstate(std::ios_base::failbit); | |
119 | } | |
120 | } | |
121 | } | |
122 | ||
123 | if (is) { | |
124 | std::copy(data, data+16, u.begin()); | |
125 | } | |
126 | } | |
127 | return is; | |
128 | } | |
129 | ||
130 | namespace detail { | |
131 | inline char to_char(size_t i) { | |
132 | if (i <= 9) { | |
133 | return static_cast<char>('0' + i); | |
134 | } else { | |
135 | return static_cast<char>('a' + (i-10)); | |
136 | } | |
137 | } | |
138 | ||
139 | inline wchar_t to_wchar(size_t i) { | |
140 | if (i <= 9) { | |
141 | return static_cast<wchar_t>(L'0' + i); | |
142 | } else { | |
143 | return static_cast<wchar_t>(L'a' + (i-10)); | |
144 | } | |
145 | } | |
146 | ||
147 | } // namespace detail | |
148 | ||
149 | inline std::string to_string(uuid const& u) | |
150 | { | |
151 | std::string result; | |
152 | result.reserve(36); | |
153 | ||
154 | std::size_t i=0; | |
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); | |
158 | ||
159 | const size_t lo = (*it_data) & 0x0F; | |
160 | result += detail::to_char(lo); | |
161 | ||
162 | if (i == 3 || i == 5 || i == 7 || i == 9) { | |
163 | result += '-'; | |
164 | } | |
165 | } | |
166 | return result; | |
167 | } | |
168 | ||
169 | #ifndef BOOST_NO_STD_WSTRING | |
170 | inline std::wstring to_wstring(uuid const& u) | |
171 | { | |
172 | std::wstring result; | |
173 | result.reserve(36); | |
174 | ||
175 | std::size_t i=0; | |
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); | |
179 | ||
180 | const size_t lo = (*it_data) & 0x0F; | |
181 | result += detail::to_wchar(lo); | |
182 | ||
183 | if (i == 3 || i == 5 || i == 7 || i == 9) { | |
184 | result += L'-'; | |
185 | } | |
186 | } | |
187 | return result; | |
188 | } | |
189 | ||
190 | #endif | |
191 | ||
192 | }} //namespace boost::uuids | |
193 | ||
194 | #if defined(_MSC_VER) | |
195 | #pragma warning(pop) // Restore warnings to previous state. | |
196 | #endif | |
197 | ||
198 | #endif // BOOST_UUID_IO_HPP |