gomp-20050608-branch/libstdc++-v3/testsuite/27_io/basic_stringbuf/seekpos/wchar_t/1.cc

   1 // 981208 bkoz test functionality of basic_stringbuf for char_type == wchar_t
   2
   3 // Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004
   4 // Free Software Foundation, Inc.
   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 2, 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 COPYING.  If not, write to the Free
  19 // Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
  20 // USA.
  21
  22 #include <sstream>
  23 #include <testsuite_hooks.h>
  24
  25 std::wstring str_01(L"mykonos. . . or what?");
  26 std::wstringbuf strb_01(str_01);
  27
  28 // test overloaded virtual functions
  29 void test04()
  30 {
  31   bool test __attribute__((unused)) = true;
  32   std::wstring          str_tmp;
  33   typedef std::wstringbuf::int_type int_type;
  34   typedef std::wstringbuf::pos_type pos_type;
  35   typedef std::wstringbuf::off_type off_type;
  36
  37   int_type c1 = strb_01.sbumpc();
  38   int_type c2;
  39   int_type c3 = strb_01.sbumpc();
  40
  41   pos_type pt_1(off_type(-1));
  42   pos_type pt_2(off_type(0));
  43   off_type off_1 = 0;
  44   off_type off_2 = 0;
  45
  46   // BUFFER MANAGEMENT & POSITIONING
  47
  48   // seekpos
  49   // pubseekpos(pos_type sp, ios_base::openmode)
  50   // alters the stream position to sp
  51   strb_01.str(str_01); //in|out ("mykonos. . . or what?");
  52
  53   //IN|OUT
  54   //beg
  55   pt_1 = strb_01.pubseekoff(2, std::ios_base::beg);
  56   off_1 = off_type(pt_1);
  57   VERIFY( off_1 >= 0 );
  58   pt_1 = strb_01.pubseekoff(0, std::ios_base::cur, std::ios_base::out);
  59   off_1 = off_type(pt_1);
  60   c1 = strb_01.snextc(); //current in pointer +1
  61   VERIFY( c1 == L'o' );
  62   c2 = strb_01.sputc(L'x');  //test current out pointer
  63   str_tmp = std::wstring(L"myxonos. . . or what?");
  64   VERIFY( strb_01.str() == str_tmp );
  65   strb_01.pubsync(); //resets pointers
  66   pt_2 = strb_01.pubseekpos(pt_1, std::ios_base::in|std::ios_base::out);
  67   off_2 = off_type(pt_2);
  68   VERIFY( off_1 == off_2 );
  69   c3 = strb_01.snextc(); //current in pointer +1
  70   VERIFY( c1 == c3 );
  71   c2 = strb_01.sputc(L'x');  //test current out pointer
  72   str_tmp = std::wstring(L"myxonos. . . or what?");
  73   VERIFY( strb_01.str() == str_tmp );
  74 }
  75
  76 int main()
  77 {
  78   test04();
  79   return 0;
  80 }
  81
  82
  83
  84 // more candy!!!