1 //===----------------------------------------------------------------------===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8 
9 // REQUIRES: locale.en_US.UTF-8
10 
11 // <iomanip>
12 
13 // template <class charT> T9 get_time(struct tm* tmb, const charT* fmt);
14 
15 #include <iomanip>
16 #include <istream>
17 #include <cassert>
18 
19 #include "platform_support.h" // locale name macros
20 
21 template <class CharT>
22 struct testbuf
23     : public std::basic_streambuf<CharT>
24 {
25     typedef std::basic_string<CharT> string_type;
26     typedef std::basic_streambuf<CharT> base;
27 private:
28     string_type str_;
29 public:
30 
31     testbuf() {}
32     testbuf(const string_type& str)
33         : str_(str)
34     {
35         base::setg(const_cast<CharT*>(str_.data()),
36                    const_cast<CharT*>(str_.data()),
37                    const_cast<CharT*>(str_.data()) + str_.size());
38     }
39 };
40 
41 int main(int, char**)
42 {
43     {
44         testbuf<char> sb("  Sat Dec 31 23:55:59 2061");
45         std::istream is(&sb);
46         is.imbue(std::locale(LOCALE_en_US_UTF_8));
47         std::tm t = {};
48         is >> std::get_time(&t, "%a %b %d %H:%M:%S %Y");
49         assert(t.tm_sec == 59);
50         assert(t.tm_min == 55);
51         assert(t.tm_hour == 23);
52         assert(t.tm_mday == 31);
53         assert(t.tm_mon == 11);
54         assert(t.tm_year == 161);
55         assert(t.tm_wday == 6);
56         assert(is.eof());
57         assert(!is.fail());
58     }
59     {
60         testbuf<wchar_t> sb(L"  Sat Dec 31 23:55:59 2061");
61         std::wistream is(&sb);
62         is.imbue(std::locale(LOCALE_en_US_UTF_8));
63         std::tm t = {};
64         is >> std::get_time(&t, L"%a %b %d %H:%M:%S %Y");
65         assert(t.tm_sec == 59);
66         assert(t.tm_min == 55);
67         assert(t.tm_hour == 23);
68         assert(t.tm_mday == 31);
69         assert(t.tm_mon == 11);
70         assert(t.tm_year == 161);
71         assert(t.tm_wday == 6);
72         assert(is.eof());
73         assert(!is.fail());
74     }
75 
76   return 0;
77 }
78