libstdc++-v3/testsuite/22_locale/codecvt/char32_t-char8_t.cc

   1 // { dg-do run { target c++11 } }
   2 // { dg-require-cstdint "" }
   3 // { dg-options "-fchar8_t" }
   4
   5 // 2014-04-24 Rüdiger Sonderfeld
   6
   7 // Copyright (C) 2015-2025 Free Software Foundation, Inc.
   8 //
   9 // This file is part of the GNU ISO C++ Library.  This library is free
  10 // software; you can redistribute it and/or modify it under the
  11 // terms of the GNU General Public License as published by the
  12 // Free Software Foundation; either version 3, or (at your option)
  13 // any later version.
  14
  15 // This library is distributed in the hope that it will be useful,
  16 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  17 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18 // GNU General Public License for more details.
  19
  20 // You should have received a copy of the GNU General Public License along
  21 // with this library; see the file COPYING3.  If not see
  22 // <http://www.gnu.org/licenses/>.
  23
  24 // [locale.codecvt], C++11 22.4.1.4.  specialization.
  25
  26 #include <locale>
  27 #include <cstring>
  28 #include <testsuite_hooks.h>
  29
  30 void
  31 test01()
  32 {
  33   using namespace std;
  34   typedef codecvt<char32_t, char8_t, mbstate_t> codecvt_c32;
  35   locale loc_c = locale::classic();
  36   VERIFY(has_facet<codecvt_c32>(loc_c));
  37   const codecvt_c32* const cvt = &use_facet<codecvt_c32>(loc_c);
  38
  39   VERIFY(!cvt->always_noconv());
  40   VERIFY(cvt->max_length() == 4);
  41   VERIFY(cvt->encoding() == 0);
  42
  43   const char8_t u8dat[] = u8"H\U000000E4ll\U000000F6 \U0001F63F \U000056FD "
  44     u8"\U0000222B f(\U000003BA) exp(-2\U000003C0\U000003C9) d\U000003BA "
  45     u8"\U0001F6BF \U0001F6BF \U0001F648 \U00000413\U00000435\U0000043E"
  46     u8"\U00000433\U00000440\U00000430\U00000444\U00000438\U0000044F \U0000FB05";
  47   const char8_t* const u8dat_end = std::end(u8dat);
  48
  49   const char32_t u32dat[] = U"H\U000000E4ll\U000000F6 \U0001F63F \U000056FD "
  50     U"\U0000222B f(\U000003BA) exp(-2\U000003C0\U000003C9) d\U000003BA "
  51     U"\U0001F6BF \U0001F6BF \U0001F648 \U00000413\U00000435\U0000043E"
  52     U"\U00000433\U00000440\U00000430\U00000444\U00000438\U0000044F \U0000FB05";
  53   const char32_t* const u32dat_end = std::end(u32dat);
  54
  55   {
  56     const size_t len = u32dat_end - u32dat + 1;
  57     char32_t* const buffer = new char32_t[len];
  58     char32_t* const buffer_end = buffer + len;
  59
  60     const char8_t* from_next;
  61     char32_t* to_next;
  62
  63     codecvt_c32::state_type state01;
  64     state01 = {};
  65     codecvt_base::result res = cvt->in(state01, u8dat, u8dat_end, from_next,
  66                                        buffer, buffer_end, to_next);
  67
  68     VERIFY(res == codecvt_base::ok);
  69     VERIFY(from_next == u8dat_end);
  70     VERIFY(std::memcmp((void*)buffer, (void*)u32dat, sizeof(u32dat)) == 0);
  71
  72     delete[] buffer;
  73   }
  74
  75   {
  76     const size_t len = u8dat_end - u8dat + 1;
  77     char8_t* const buffer = new char8_t[len];
  78     char8_t* const buffer_end = buffer + len;
  79
  80     const char32_t* from_next;
  81     char8_t* to_next;
  82
  83     codecvt_c32::state_type state01;
  84     state01 = {};
  85     codecvt_base::result res = cvt->out(state01, u32dat, u32dat_end, from_next,
  86                                         buffer, buffer_end, to_next);
  87
  88     VERIFY(res == codecvt_base::ok);
  89     VERIFY(from_next == u32dat_end);
  90     VERIFY(std::memcmp((void*)buffer, (void*)u8dat, sizeof(u8dat)) == 0);
  91
  92     delete[] buffer;
  93   }
  94 }
  95
  96 int
  97 main()
  98 {
  99   test01();
 100 }