libstdc++-v3/testsuite/27_io/basic_streambuf/sputn/wchar_t/1.cc

   1 // 1999-10-11 bkoz
   2
   3 // Copyright (C) 1999-2023 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
  21 // 27.5.2 template class basic_streambuf
  22
  23 #include <streambuf>
  24 #include <cwchar>
  25 #include <cstring>
  26 #include <testsuite_hooks.h>
  27
  28 class testbuf : public std::wstreambuf
  29 {
  30 public:
  31
  32   // Typedefs:
  33   typedef std::wstreambuf::traits_type traits_type;
  34   typedef std::wstreambuf::char_type char_type;
  35
  36   testbuf(): std::wstreambuf()
  37   { }
  38
  39   void
  40   check_pointers()
  41   {
  42     VERIFY( !this->eback() );
  43     VERIFY( !this->gptr() );
  44     VERIFY( !this->egptr() );
  45     VERIFY( !this->pbase() );
  46     VERIFY( !this->pptr() );
  47     VERIFY( !this->epptr() );
  48   }
  49
  50   int_type
  51   pub_uflow()
  52   { return (this->uflow()); }
  53
  54   int_type
  55   pub_overflow(int_type __c = traits_type::eof())
  56   { return (this->overflow(__c)); }
  57
  58   int_type
  59   pub_pbackfail(int_type __c)
  60   { return (this->pbackfail(__c)); }
  61
  62   void
  63   pub_setg(wchar_t* beg, wchar_t* cur, wchar_t* end)
  64   { this->setg(beg, cur, end); }
  65
  66   void
  67   pub_setp(wchar_t* beg, wchar_t* end)
  68   { this->setp(beg, end); }
  69
  70 protected:
  71   int_type
  72   underflow()
  73   {
  74     int_type __retval = traits_type::eof();
  75     if (this->gptr() < this->egptr())
  76       __retval = traits_type::not_eof(0);
  77     return __retval;
  78   }
  79 };
  80
  81 void test01()
  82 {
  83   typedef testbuf::traits_type traits_type;
  84   typedef testbuf::int_type int_type;
  85
  86   testbuf buf01;
  87
  88   // sputn/xsputn
  89   wchar_t lit02[] = L"isotope 217: the unstable molecule on thrill jockey";
  90   const int i02 = std::wcslen(lit02);
  91
  92   wchar_t carray[i02 + 1];
  93   std::wmemset(carray, 0, i02 + 1);
  94
  95   buf01.pub_setp(carray, (carray + i02));
  96   buf01.sputn(lit02, 0);
  97   VERIFY( carray[0] == 0 );
  98   VERIFY( lit02[0] == L'i' );
  99   buf01.sputn(lit02, 1);
 100   VERIFY( lit02[0] == carray[0] );
 101   VERIFY( lit02[1] == L's' );
 102   VERIFY( carray[1] == 0 );
 103   buf01.sputn(lit02 + 1, 10);
 104   VERIFY( std::memcmp(lit02, carray, 10) == 0 );
 105   buf01.sputn(lit02 + 11, 20);
 106   VERIFY( std::memcmp(lit02, carray, 30) == 0 );
 107 }
 108
 109 int main()
 110 {
 111   test01();
 112   return 0;
 113 }