libstdc++-v3/testsuite/22_locale/codecvt/utf8.cc

   1 // Copyright (C) 2015-2019 Free Software Foundation, Inc.
   2 //
   3 // This file is part of the GNU ISO C++ Library.  This library is free
   4 // software; you can redistribute it and/or modify it under the
   5 // terms of the GNU General Public License as published by the
   6 // Free Software Foundation; either version 3, or (at your option)
   7 // any later version.
   8
   9 // This library is distributed in the hope that it will be useful,
  10 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 // GNU General Public License for more details.
  13
  14 // You should have received a copy of the GNU General Public License along
  15 // with this library; see the file COPYING3.  If not see
  16 // <http://www.gnu.org/licenses/>.
  17
  18 // { dg-do run { target c++11 } }
  19
  20 #include <locale>
  21 #include <iterator>
  22 #include <string>
  23 #include <testsuite_hooks.h>
  24
  25 const char expected[] = u8"£¥€";
  26 const std::size_t expected_len = std::char_traits<char>::length(expected);
  27
  28 template<typename C>
  29 void test(const C* from)
  30 {
  31   auto len = std::char_traits<C>::length(from);
  32   std::mbstate_t state{};
  33   char buf[16] = { };
  34   using test_type = std::codecvt<C, char, std::mbstate_t>;
  35   const test_type& cvt = std::use_facet<test_type>(std::locale::classic());
  36   auto from_end = from + len;
  37   auto from_next = from;
  38   auto buf_end = std::end(buf);
  39   auto buf_next = buf;
  40   auto res = cvt.out(state, from, from_end, from_next, buf, buf_end, buf_next);
  41   VERIFY( res == std::codecvt_base::ok );
  42   VERIFY( from_next == from_end );
  43   VERIFY( (buf_next - buf) == expected_len );
  44   VERIFY( 0 == std::char_traits<char>::compare(buf, expected, expected_len) );
  45
  46   C buf2[16];
  47   auto exp_end = expected + expected_len;
  48   auto exp_next = expected;
  49   auto buf2_end = std::end(buf2);
  50   auto buf2_next = buf2;
  51   res = cvt.in(state, expected, exp_end, exp_next, buf2, buf2_end, buf2_next);
  52   VERIFY( res == std::codecvt_base::ok );
  53   VERIFY( exp_next == exp_end );
  54   VERIFY( (buf2_next - buf2) == len );
  55   VERIFY( 0 == std::char_traits<C>::compare(buf2, from, len) );
  56 }
  57
  58 void
  59 test01()
  60 {
  61   test(u"£¥€");
  62 }
  63
  64 void
  65 test02()
  66 {
  67   test(U"£¥€");
  68 }
  69
  70 int
  71 main()
  72 {
  73   test01();
  74   test02();
  75 }