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> T10 put_time(const struct tm* tmb, const charT* fmt); 14 15 #include <iomanip> 16 #include <ostream> 17 #include <cassert> 18 19 #include "platform_support.h" // locale name macros 20 21 template <class CharT> 22 class testbuf 23 : public std::basic_streambuf<CharT> 24 { 25 typedef std::basic_streambuf<CharT> base; 26 std::basic_string<CharT> str_; 27 public: 28 testbuf() 29 { 30 } 31 32 std::basic_string<CharT> str() const 33 {return std::basic_string<CharT>(base::pbase(), base::pptr());} 34 35 protected: 36 37 virtual typename base::int_type 38 overflow(typename base::int_type ch = base::traits_type::eof()) 39 { 40 if (ch != base::traits_type::eof()) 41 { 42 int n = static_cast<int>(str_.size()); 43 str_.push_back(static_cast<CharT>(ch)); 44 str_.resize(str_.capacity()); 45 base::setp(const_cast<CharT*>(str_.data()), 46 const_cast<CharT*>(str_.data() + str_.size())); 47 base::pbump(n+1); 48 } 49 return ch; 50 } 51 }; 52 53 int main() 54 { 55 { 56 testbuf<char> sb; 57 std::ostream os(&sb); 58 os.imbue(std::locale(LOCALE_en_US_UTF_8)); 59 std::tm t = {}; 60 t.tm_sec = 59; 61 t.tm_min = 55; 62 t.tm_hour = 23; 63 t.tm_mday = 31; 64 t.tm_mon = 11; 65 t.tm_year = 161; 66 t.tm_wday = 6; 67 t.tm_isdst = 0; 68 os << std::put_time(&t, "%a %b %d %H:%M:%S %Y"); 69 assert(sb.str() == "Sat Dec 31 23:55:59 2061"); 70 } 71 { 72 testbuf<wchar_t> sb; 73 std::wostream os(&sb); 74 os.imbue(std::locale(LOCALE_en_US_UTF_8)); 75 std::tm t = {}; 76 t.tm_sec = 59; 77 t.tm_min = 55; 78 t.tm_hour = 23; 79 t.tm_mday = 31; 80 t.tm_mon = 11; 81 t.tm_year = 161; 82 t.tm_wday = 6; 83 os << std::put_time(&t, L"%a %b %d %H:%M:%S %Y"); 84 assert(sb.str() == L"Sat Dec 31 23:55:59 2061"); 85 } 86 } 87