libstdc++-v3/testsuite/22_locale/codecvt/out/char/1.cc

   1 // 2000-08-17 Benjamin Kosnik <bkoz@cygnus.com>
   2
   3 // Copyright (C) 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2009
   4 // Free Software Foundation
   5 //
   6 // This file is part of the GNU ISO C++ Library.  This library is free
   7 // software; you can redistribute it and/or modify it under the
   8 // terms of the GNU General Public License as published by the
   9 // Free Software Foundation; either version 3, or (at your option)
  10 // any later version.
  11
  12 // This library is distributed in the hope that it will be useful,
  13 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 // GNU General Public License for more details.
  16
  17 // You should have received a copy of the GNU General Public License along
  18 // with this library; see the file COPYING3.  If not see
  19 // <http://www.gnu.org/licenses/>.
  20
  21 // 22.2.1.5 - Template class codecvt [lib.locale.codecvt]
  22
  23 #include <locale>
  24 #include <cstring>
  25 #include <testsuite_hooks.h>
  26
  27 // Required instantiation, degenerate conversion.
  28 // codecvt<char, char, mbstate_t>
  29 void test01()
  30 {
  31   using namespace std;
  32   typedef codecvt_base::result                  result;
  33   typedef codecvt<char, char, mbstate_t>        c_codecvt;
  34
  35   bool test __attribute__((unused)) = true;
  36   const char*           c_lit = "black pearl jasmine tea";
  37   const char*           from_next;
  38   int                   size = 23;
  39   char*                 c_arr = new char[size];
  40   char*                 c_ref = new char[size];
  41   char*                 to_next;
  42
  43   locale                loc = locale::classic();
  44   c_codecvt::state_type state;
  45   const c_codecvt*      cvt = &use_facet<c_codecvt>(loc);
  46
  47   // According to the resolution of DR19 (see also libstd++/9168), in
  48   // case of degenerate conversion ('noconv'), "there are no changes to
  49   // the values in [to, to_limit)."
  50   memset(c_ref, 'X', size);
  51
  52   // out
  53   memset(c_arr, 'X', size);
  54   result r2 = cvt->out(state, c_lit, c_lit + size, from_next,
  55                        c_arr, c_arr + size, to_next);
  56   VERIFY( r2 == codecvt_base::noconv );
  57   VERIFY( !memcmp(c_arr, c_ref, size) );
  58   VERIFY( from_next == c_lit );
  59   VERIFY( to_next == c_arr );
  60
  61   delete [] c_arr;
  62   delete [] c_ref;
  63 }
  64
  65 int main ()
  66 {
  67   test01();
  68   return 0;
  69 }