libstdc++-v3/testsuite/27_io/basic_ostream/inserters_character/wchar_t/7.cc

   1 // 1999-08-16 bkoz
   2
   3 // Copyright (C) 1999-2024 Free Software Foundation, Inc.
   4 //
   5 // This file is part of the GNU ISO C++ Library.  This library is free
   6 // software; you can redistribute it and/or modify it under the
   7 // terms of the GNU General Public License as published by the
   8 // Free Software Foundation; either version 3, or (at your option)
   9 // any later version.
  10
  11 // This library is distributed in the hope that it will be useful,
  12 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 // GNU General Public License for more details.
  15
  16 // You should have received a copy of the GNU General Public License along
  17 // with this library; see the file COPYING3.  If not see
  18 // <http://www.gnu.org/licenses/>.
  19
  20 // 27.6.2.5.4 basic_ostream character inserters
  21
  22 #include <string>
  23 #include <ostream>
  24 #include <sstream>
  25 #include <locale>
  26 #include <testsuite_hooks.h>
  27
  28 // Global counter, needs to be reset after use.
  29 bool used;
  30
  31 class gnu_ctype : public std::ctype<wchar_t>
  32 {
  33 protected:
  34   char_type
  35   do_widen(char c) const
  36   {
  37     used = true;
  38     return std::ctype<wchar_t>::do_widen(c);
  39   }
  40
  41   const char*
  42   do_widen(const char* low, const char* high, char_type* dest) const
  43   {
  44     used = true;
  45     return std::ctype<wchar_t>::do_widen(low, high, dest);
  46   }
  47 };
  48
  49 // 27.6.2.5.4 - Character inserter template functions
  50 // [lib.ostream.inserters.character]
  51 void test07()
  52 {
  53   using namespace std;
  54
  55   const char* buffer = "SFPL 5th floor, outside carrol, the Asian side";
  56
  57   wostringstream oss;
  58   oss.imbue(locale(locale::classic(), new gnu_ctype));
  59
  60   // 1
  61   // template<class charT, class traits>
  62   // basic_ostream<charT,traits>& operator<<(basic_ostream<charT,traits>& out,
  63   //                                           const char* s);
  64   used = false;
  65   oss << buffer;
  66   VERIFY( used ); // Only required for char_type != char
  67   wstring str = oss.str();
  68   wchar_t c1 = oss.widen(buffer[0]);
  69   VERIFY( str[0] == c1 );
  70   wchar_t c2 = oss.widen(buffer[1]);
  71   VERIFY( str[1] == c2 );
  72
  73   // 2
  74   // template<class charT, class traits>
  75   // basic_ostream<charT,traits>& operator<<(basic_ostream<charT,traits>& out,
  76   //                                         char c);
  77   used = false;
  78   oss.str(wstring());
  79   oss << 'b';
  80   VERIFY( used ); // Only required for char_type != char
  81   str = oss.str();
  82   wchar_t c3 = oss.widen('b');
  83   VERIFY( str[0] == c3 );
  84 }
  85
  86 int main()
  87 {
  88   test07();
  89   return 0;
  90 }