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

   1 // 1999-10-11 bkoz
   2
   3 // Copyright (C) 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2009, 2010
   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 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 // 27.5.2 template class basic_streambuf
  23
  24 #include <streambuf>
  25 #include <cwchar>
  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   bool
  40   check_pointers()
  41   {
  42     bool test __attribute__((unused)) = true;
  43     VERIFY( !this->eback() );
  44     VERIFY( !this->gptr() );
  45     VERIFY( !this->egptr() );
  46     VERIFY( !this->pbase() );
  47     VERIFY( !this->pptr() );
  48     VERIFY( !this->epptr() );
  49     return test;
  50   }
  51
  52   int_type
  53   pub_uflow()
  54   { return (this->uflow()); }
  55
  56   int_type
  57   pub_overflow(int_type __c = traits_type::eof())
  58   { return (this->overflow(__c)); }
  59
  60   int_type
  61   pub_pbackfail(int_type __c)
  62   { return (this->pbackfail(__c)); }
  63
  64   void
  65   pub_setg(wchar_t* beg, wchar_t* cur, wchar_t* end)
  66   { this->setg(beg, cur, end); }
  67
  68   void
  69   pub_setp(wchar_t* beg, wchar_t* end)
  70   { this->setp(beg, end); }
  71
  72 protected:
  73   int_type
  74   underflow()
  75   {
  76     int_type __retval = traits_type::eof();
  77     if (this->gptr() < this->egptr())
  78       __retval = traits_type::not_eof(0);
  79     return __retval;
  80   }
  81 };
  82
  83 void test02()
  84 {
  85   typedef testbuf::traits_type traits_type;
  86   typedef testbuf::int_type int_type;
  87
  88   bool test __attribute__((unused)) = true;
  89
  90   wchar_t lit01[] = L"chicago underground trio/possible cube on delmark";
  91   size_t i01 = traits_type::length(lit01);
  92
  93   testbuf buf01;
  94
  95   // 27.5.2.1 basic_streambuf ctors
  96   // default ctor initializes
  97   // - all pointer members to null pointers
  98   // - locale to current global locale
  99   VERIFY( buf01.check_pointers() );
 100   VERIFY( buf01.getloc() == std::locale() );
 101
 102   // 27.5.2.2.5 Put area
 103
 104   wchar_t carray01[i01];
 105   std::wmemset(carray01, 0, i01);
 106
 107   buf01.pub_setg(lit01, lit01, lit01 + i01);
 108   buf01.sgetn(carray01, 0);
 109   VERIFY( carray01[0] == 0 );
 110   buf01.sgetn(carray01, 1);
 111   VERIFY( carray01[0] == L'c' );
 112   buf01.sgetn(carray01 + 1, i01 - 1);
 113   VERIFY( carray01[0] == L'c' );
 114   VERIFY( carray01[1] == L'h' );
 115   VERIFY( carray01[i01 - 1] == L'k' );
 116 }
 117
 118 int main()
 119 {
 120   test02();
 121   return 0;
 122 }