libstdc++-v3/testsuite/22_locale/codecvt/length/wchar_t/3.cc

   1 // 2003-02-06  Petur Runolfsson  <peturr02@ru.is>
   2
   3 // Copyright (C) 2003 Free Software Foundation
   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 2, 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 COPYING.  If not, write to the Free
  18 // Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
  19 // USA.
  20
  21 // 22.2.1.5 - Template class codecvt [lib.locale.codecvt]
  22
  23 #include <locale>
  24 #include <testsuite_hooks.h>
  25
  26 // Need to explicitly set the state(mbstate_t) to zero.
  27 // How to do this is not specified by the ISO C99 standard, so we
  28 // might need to add some operators to make the intuiative case
  29 // work:
  30 //   w_codecvt::state_type state00;
  31 //   state00 = 0;
  32 // or, can use this explicit "C" initialization:
  33 //   w_codecvt::state_type state01 = {0, 0};
  34 // .. except Ulrich says: Use memset. Always use memset. Feel the force...
  35 void
  36 zero_state(std::mbstate_t& state)
  37 { std::memset(&state, 0, sizeof(std::mbstate_t)); }
  38
  39 // Required instantiation
  40 // codecvt<wchar_t, char, mbstate_t>
  41 void test03()
  42 {
  43   using namespace std;
  44   typedef codecvt<wchar_t, char, mbstate_t>     w_codecvt;
  45   typedef char                                  ext_type;
  46
  47   bool test __attribute__((unused)) = true;
  48   const ext_type*       e_lit =
  49     "\x1\x2\x3\x4\x5\x6\x7\x8\x9\xa\xb\xc\xd\xe\xf\x10\x11\x12\x13"
  50     "\x14\x15\x16\x17\x18\x19\x1a\x1b\x1c\x1d\x1e\x1f\x20!\"#$%&"
  51     "'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\]^_`"
  52     "abcdefghijklmnopqrstuvwxyz{|}~\x7f\x80\x81\x82\x83\x84\x85\x86"
  53     "\x87\x88\x89\x8a\x8b\x8c\x8d\x8e\x8f\x90\x91\x92\x93\x94\x95"
  54     "\x96\x97\x98\x99\x9a\x9b\x9c\x9d\x9e\x9f\xa0\xa1\xa2\xa3\xa4"
  55     "\xa5\xa6\xa7\xa8\xa9\xaa\xab\xac\xad\xae\xaf\xb0\xb1\xb2\xb3"
  56     "\xb4\xb5\xb6\xb7\xb8\xb9\xba\xbb\xbc\xbd\xbe\xbf\xc0\xc1\xc2"
  57     "\xc3\xc4\xc5\xc6\xc7\xc8\xc9\xca\xcb\xcc\xcd\xce\xcf\xd0\xd1"
  58     "\xd2\xd3\xd4\xd5\xd6\xd7\xd8\xd9\xda\xdb\xdc\xdd\xde\xdf\xe0"
  59     "\xe1\xe2\xe3\xe4\xe5\xe6\xe7\xe8\xe9\xea\xeb\xec\xed\xee\xef"
  60     "\xf0\xf1\xf2\xf3\xf4\xf5\xf6\xf7\xf8\xf9\xfa\xfb\xfc\xfd\xfe"
  61     "\xff";
  62   int                   size = strlen(e_lit);
  63
  64   locale loc = __gnu_test::try_named_locale("en_US.ISO-8859-15");
  65   locale::global(loc);
  66   const w_codecvt*      cvt = &use_facet<w_codecvt>(loc);
  67
  68   w_codecvt::state_type state01;
  69   zero_state(state01);
  70   int i = cvt->length(state01, e_lit, e_lit + size, 5);
  71   VERIFY( i == 5 );
  72
  73   w_codecvt::state_type state02;
  74   zero_state(state02);
  75   int j = cvt->length(state02, e_lit, e_lit + size, size);
  76   VERIFY( j == size );
  77
  78   w_codecvt::state_type state03;
  79   zero_state(state03);
  80   int k = cvt->length(state03, e_lit, e_lit + size, size * 2);
  81   VERIFY( k == size );
  82 }
  83
  84 int main ()
  85 {
  86   test03();
  87   return 0;
  88 }