1// 1999-10-11 bkoz
2
3// Copyright (C) 1999-2015 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 <cstring>
25#include <testsuite_hooks.h>
26
27class testbuf : public std::streambuf
28{
29public:
30
31  // Typedefs:
32  typedef std::streambuf::traits_type traits_type;
33  typedef std::streambuf::char_type char_type;
34
35  testbuf(): std::streambuf()
36  { }
37
38  bool
39  check_pointers()
40  {
41    bool test __attribute__((unused)) = true;
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    return test;
49  }
50
51  int_type
52  pub_uflow()
53  { return (this->uflow()); }
54
55  int_type
56  pub_overflow(int_type __c = traits_type::eof())
57  { return (this->overflow(__c)); }
58
59  int_type
60  pub_pbackfail(int_type __c)
61  { return (this->pbackfail(__c)); }
62
63  void
64  pub_setg(char* beg, char* cur, char *end)
65  { this->setg(beg, cur, end); }
66
67  void
68  pub_setp(char* beg, char* end)
69  { this->setp(beg, end); }
70
71protected:
72  int_type
73  underflow()
74  {
75    int_type __retval = traits_type::eof();
76    if (this->gptr() < this->egptr())
77      __retval = traits_type::not_eof(0);
78    return __retval;
79  }
80};
81
82void test02()
83{
84  typedef testbuf::traits_type traits_type;
85  typedef testbuf::int_type int_type;
86
87  bool test __attribute__((unused)) = true;
88
89  char lit01[] = "chicago underground trio/possible cube on delmark";
90  size_t i01 = traits_type::length(lit01);
91
92  testbuf buf01;
93
94  // 27.5.2.1 basic_streambuf ctors
95  // default ctor initializes
96  // - all pointer members to null pointers
97  // - locale to current global locale
98  VERIFY( buf01.check_pointers() );
99  VERIFY( buf01.getloc() == std::locale() );
100
101  // 27.5.2.2.5 Put area
102
103  char carray01[i01];
104  std::memset(carray01, 0, i01);
105
106  buf01.pub_setg(lit01, lit01, lit01 + i01);
107  buf01.sgetn(carray01, 0);
108  VERIFY( carray01[0] == 0 );
109  buf01.sgetn(carray01, 1);
110  VERIFY( carray01[0] == 'c' );
111  buf01.sgetn(carray01 + 1, i01 - 1);
112  VERIFY( carray01[0] == 'c' );
113  VERIFY( carray01[1] == 'h' );
114  VERIFY( carray01[i01 - 1] == 'k' );
115}
116
117int main()
118{
119  test02();
120  return 0;
121}
122