| 1 | #include <boost/uuid/uuid.hpp>
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| 2 | #include <boost/spirit/include/qi.hpp>
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| 3 | #include <boost/spirit/include/qi_uint.hpp>
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| 4 | #include <boost/spirit/include/phoenix_core.hpp>
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| 5 | #include <boost/spirit/include/phoenix_operator.hpp>
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| 6 |
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| 7 | namespace qi = boost::spirit::qi;
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| 8 | namespace px = boost::phoenix;
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| 9 |
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| 10 | static qi::uint_parser<uint8_t, 16, 2, 2> hx;
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| 11 |
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| 12 | boost::uuids::uuid from_string(const std::string& rep)
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| 13 | {
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| 14 | boost::uuids::uuid u;
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| 15 |
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| 16 | std::string::const_iterator rep_begin = rep.begin();
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| 17 | std::string::const_iterator rep_end = rep.end();
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| 18 |
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| 19 | const bool okay = boost::spirit::qi::parse( rep_begin, rep_end,
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| 20 | hx[ px::ref(u.data[0]) = qi::_1 ] >
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| 21 | hx[ px::ref(u.data[1]) = qi::_1 ] >
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| 22 | hx[ px::ref(u.data[2]) = qi::_1 ] >
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| 23 | hx[ px::ref(u.data[3]) = qi::_1 ] >
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| 24 | '-' >
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| 25 | hx[ px::ref(u.data[4]) = qi::_1 ] >
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| 26 | hx[ px::ref(u.data[5]) = qi::_1 ] >
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| 27 | '-' >
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| 28 | hx[ px::ref(u.data[6]) = qi::_1 ] >
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| 29 | hx[ px::ref(u.data[7]) = qi::_1 ] >
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| 30 | '-' >
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| 31 | hx[ px::ref(u.data[8]) = qi::_1 ] >
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| 32 | hx[ px::ref(u.data[9]) = qi::_1 ] > // enable this line (or any other line below) and you'll see the error
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| 33 | '-' >
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| 34 | // hx[ px::ref(u.data[10]) = qi::_1 ] >
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| 35 | // hx[ px::ref(u.data[11]) = qi::_1 ] >
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| 36 | // hx[ px::ref(u.data[12]) = qi::_1 ] >
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| 37 | // hx[ px::ref(u.data[13]) = qi::_1 ] >
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| 38 | // hx[ px::ref(u.data[14]) = qi::_1 ] >
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| 39 | hx[ px::ref(u.data[15]) = qi::_1 ]
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| 40 |
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| 41 | );
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| 42 |
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| 43 | if(!okay) throw std::runtime_error("cannot parse string \"" + rep + "\" as a UUID");
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| 44 | return u;
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| 45 | }
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| 46 |
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| 47 |
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| 48 | int main()
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| 49 | {
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| 50 | boost::uuids::uuid u = from_string("f0cbb6f6-3c39-42e0-bfac-5a34a2900f1d");
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| 51 | return u.data[0];
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| 52 | }
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