1 //===----------------------------------------------------------------------===//
2 //
3 //                     The LLVM Compiler Infrastructure
4 //
5 // This file is dual licensed under the MIT and the University of Illinois Open
6 // Source Licenses. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9 
10 // <locale>
11 
12 // template <> class codecvt<wchar_t, char, mbstate_t>
13 
14 // result out(stateT& state,
15 //            const internT* from, const internT* from_end, const internT*& from_next,
16 //            externT* to, externT* to_end, externT*& to_next) const;
17 
18 #include <locale>
19 #include <string>
20 #include <vector>
21 #include <cassert>
22 
23 typedef std::codecvt<wchar_t, char, std::mbstate_t> F;
24 
25 int main()
26 {
27     std::locale l = std::locale::classic();
28     const F& f = std::use_facet<F>(l);
29     {
30         const std::basic_string<F::intern_type> from(L"some text");
31         std::vector<char> to(from.size()+1);
32         std::mbstate_t mbs = {0};
33         const F::intern_type* from_next = 0;
34         char* to_next = 0;
35         F::result r = f.out(mbs, from.data(), from.data() + from.size(), from_next,
36                                  to.data(), to.data() + to.size(), to_next);
37         assert(r == F::ok);
38         assert(from_next - from.data() == from.size());
39         assert(to_next - to.data() == from.size());
40         assert(to.data() == std::string("some text"));
41     }
42     {
43         std::basic_string<F::intern_type> from(L"some text");
44         from[4] = '\0';
45         std::vector<char> to(from.size()+1);
46         std::mbstate_t mbs = {0};
47         const F::intern_type* from_next = 0;
48         char* to_next = 0;
49         F::result r = f.out(mbs, from.data(), from.data() + from.size(), from_next,
50                                  to.data(), to.data() + to.size(), to_next);
51         assert(r == F::ok);
52         assert(from_next - from.data() == from.size());
53         assert(to_next - to.data() == from.size());
54         assert(memcmp(to.data(), "some\0text", from.size()) == 0);
55     }
56     {
57         std::basic_string<F::intern_type> from(L"some text");
58         std::vector<char> to(from.size()-1);
59         std::mbstate_t mbs = {0};
60         const F::intern_type* from_next = 0;
61         char* to_next = 0;
62         F::result r = f.out(mbs, from.data(), from.data() + from.size(), from_next,
63                                  to.data(), to.data() + to.size()-1, to_next);
64         assert(r == F::partial);
65         assert(from_next - from.data() == to.size()-1);
66         assert(to_next - to.data() == to.size()-1);
67         assert(to.data() == std::string("some te"));
68     }
69 }
70