libstdc++-v3/testsuite/22_locale/codecvt/char32_t.cc

   1 // { dg-do run { target c++11 } }
   2
   3 // 2014-04-24 Rüdiger Sonderfeld
   4
   5 // Copyright (C) 2015-2025 Free Software Foundation, Inc.
   6 //
   7 // This file is part of the GNU ISO C++ Library.  This library is free
   8 // software; you can redistribute it and/or modify it under the
   9 // terms of the GNU General Public License as published by the
  10 // Free Software Foundation; either version 3, or (at your option)
  11 // any later version.
  12
  13 // This library is distributed in the hope that it will be useful,
  14 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16 // GNU General Public License for more details.
  17
  18 // You should have received a copy of the GNU General Public License along
  19 // with this library; see the file COPYING3.  If not see
  20 // <http://www.gnu.org/licenses/>.
  21
  22 // [locale.codecvt], C++11 22.4.1.4.  specialization.
  23
  24 #include <locale>
  25 #include <cstring>
  26 #include <testsuite_hooks.h>
  27
  28 void
  29 test01()
  30 {
  31   using namespace std;
  32   typedef codecvt<char32_t, char, mbstate_t> codecvt_c32;
  33   locale loc_c = locale::classic();
  34   VERIFY(has_facet<codecvt_c32>(loc_c));
  35   const codecvt_c32* const cvt = &use_facet<codecvt_c32>(loc_c);
  36
  37   VERIFY(!cvt->always_noconv());
  38   VERIFY(cvt->max_length() == 4);
  39   VERIFY(cvt->encoding() == 0);
  40
  41 #ifndef _GLIBCXX_USE_CHAR8_T
  42   using char8_t = char;
  43 #endif
  44   const char8_t u8dat_[] = u8"H\U000000E4ll\U000000F6 \U0001F63F \U000056FD "
  45     u8"\U0000222B f(\U000003BA) exp(-2\U000003C0\U000003C9) d\U000003BA "
  46     u8"\U0001F6BF \U0001F6BF \U0001F648 \U00000413\U00000435\U0000043E"
  47     u8"\U00000433\U00000440\U00000430\U00000444\U00000438\U0000044F \U0000FB05";
  48   const char* const u8dat = (const char*)u8dat_;
  49   const char* const u8dat_end = (const char*)std::end(u8dat_);
  50
  51   const char32_t u32dat[] = U"H\U000000E4ll\U000000F6 \U0001F63F \U000056FD "
  52     U"\U0000222B f(\U000003BA) exp(-2\U000003C0\U000003C9) d\U000003BA "
  53     U"\U0001F6BF \U0001F6BF \U0001F648 \U00000413\U00000435\U0000043E"
  54     U"\U00000433\U00000440\U00000430\U00000444\U00000438\U0000044F \U0000FB05";
  55   const char32_t* const u32dat_end = std::end(u32dat);
  56
  57   {
  58     const size_t len = u32dat_end - u32dat + 1;
  59     char32_t* const buffer = new char32_t[len];
  60     char32_t* const buffer_end = buffer + len;
  61
  62     const char* from_next;
  63     char32_t* to_next;
  64
  65     codecvt_c32::state_type state01;
  66     state01 = {};
  67     codecvt_base::result res = cvt->in(state01, u8dat, u8dat_end, from_next,
  68                                        buffer, buffer_end, to_next);
  69
  70     VERIFY(res == codecvt_base::ok);
  71     VERIFY(from_next == u8dat_end);
  72     VERIFY(std::memcmp((void*)buffer, (void*)u32dat, sizeof(u32dat)) == 0);
  73
  74     delete[] buffer;
  75   }
  76
  77   {
  78     const size_t len = u8dat_end - u8dat + 1;
  79     char* const buffer = new char[len];
  80     char* const buffer_end = buffer + len;
  81
  82     const char32_t* from_next;
  83     char* to_next;
  84
  85     codecvt_c32::state_type state01;
  86     state01 = {};
  87     codecvt_base::result res = cvt->out(state01, u32dat, u32dat_end, from_next,
  88                                         buffer, buffer_end, to_next);
  89
  90     VERIFY(res == codecvt_base::ok);
  91     VERIFY(from_next == u32dat_end);
  92     VERIFY(std::memcmp((void*)buffer, (void*)u8dat_, sizeof(u8dat_)) == 0);
  93
  94     delete[] buffer;
  95   }
  96 }
  97
  98 int
  99 main()
 100 {
 101   test01();
 102 }