1// Backward-compat support -*- C++ -*-
2
3// Copyright (C) 2001-2014 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// Under Section 7 of GPL version 3, you are granted additional
17// permissions described in the GCC Runtime Library Exception, version
18// 3.1, as published by the Free Software Foundation.
19
20// You should have received a copy of the GNU General Public License and
21// a copy of the GCC Runtime Library Exception along with this program;
22// see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
23// <http://www.gnu.org/licenses/>.
24
25/*
26 * Copyright (c) 1998
27 * Silicon Graphics Computer Systems, Inc.
28 *
29 * Permission to use, copy, modify, distribute and sell this software
30 * and its documentation for any purpose is hereby granted without fee,
31 * provided that the above copyright notice appear in all copies and
32 * that both that copyright notice and this permission notice appear
33 * in supporting documentation.  Silicon Graphics makes no
34 * representations about the suitability of this software for any
35 * purpose.  It is provided "as is" without express or implied warranty.
36 */
37
38// WARNING: The classes defined in this header are DEPRECATED.  This
39// header is defined in section D.7.1 of the C++ standard, and it
40// MAY BE REMOVED in a future standard revision.  One should use the
41// header <sstream> instead.
42
43/** @file backward/strstream
44 *  This is an internal header file, included by other library headers.
45 *  Do not attempt to use it directly. @headername{sstream}
46 */
47
48#ifndef _BACKWARD_STRSTREAM
49#define _BACKWARD_STRSTREAM
50
51#include "backward_warning.h"
52#include <iosfwd>
53#include <ios>
54#include <istream>
55#include <ostream>
56#include <string>
57
58namespace std _GLIBCXX_VISIBILITY(default)
59{
60_GLIBCXX_BEGIN_NAMESPACE_VERSION
61
62  // Class strstreambuf, a streambuf class that manages an array of char.
63  // Note that this class is not a template.
64  class strstreambuf : public basic_streambuf<char, char_traits<char> >
65  {
66  public:
67    // Types.
68    typedef char_traits<char>              _Traits;
69    typedef basic_streambuf<char, _Traits> _Base;
70
71  public:
72    // Constructor, destructor
73    explicit strstreambuf(streamsize __initial_capacity = 0);
74    strstreambuf(void* (*__alloc)(size_t), void (*__free)(void*));
75
76    strstreambuf(char* __get, streamsize __n, char* __put = 0) throw ();
77    strstreambuf(signed char* __get, streamsize __n, signed char* __put = 0) throw ();
78    strstreambuf(unsigned char* __get, streamsize __n, unsigned char* __put=0) throw ();
79
80    strstreambuf(const char* __get, streamsize __n) throw ();
81    strstreambuf(const signed char* __get, streamsize __n) throw ();
82    strstreambuf(const unsigned char* __get, streamsize __n) throw ();
83
84    virtual ~strstreambuf();
85
86  public:
87    void freeze(bool = true) throw ();
88    char* str() throw ();
89    _GLIBCXX_PURE int pcount() const throw ();
90
91  protected:
92    virtual int_type overflow(int_type __c  = _Traits::eof());
93    virtual int_type pbackfail(int_type __c = _Traits::eof());
94    virtual int_type underflow();
95    virtual _Base* setbuf(char* __buf, streamsize __n);
96    virtual pos_type seekoff(off_type __off, ios_base::seekdir __dir,
97			     ios_base::openmode __mode
98			     = ios_base::in | ios_base::out);
99    virtual pos_type seekpos(pos_type __pos, ios_base::openmode __mode
100			     = ios_base::in | ios_base::out);
101
102  private:
103    strstreambuf&
104    operator=(const strstreambuf&);
105
106    strstreambuf(const strstreambuf&);
107
108    // Dynamic allocation, possibly using _M_alloc_fun and _M_free_fun.
109    char* _M_alloc(size_t);
110    void  _M_free(char*);
111
112    // Helper function used in constructors.
113    void _M_setup(char* __get, char* __put, streamsize __n) throw ();
114
115  private:
116    // Data members.
117    void* (*_M_alloc_fun)(size_t);
118    void  (*_M_free_fun)(void*);
119
120    bool _M_dynamic  : 1;
121    bool _M_frozen   : 1;
122    bool _M_constant : 1;
123  };
124
125  // Class istrstream, an istream that manages a strstreambuf.
126  class istrstream : public basic_istream<char>
127  {
128  public:
129    explicit istrstream(char*);
130    explicit istrstream(const char*);
131    istrstream(char* , streamsize);
132    istrstream(const char*, streamsize);
133    virtual ~istrstream();
134
135    _GLIBCXX_CONST strstreambuf* rdbuf() const throw ();
136    char* str() throw ();
137
138  private:
139    strstreambuf _M_buf;
140  };
141
142  // Class ostrstream
143  class ostrstream : public basic_ostream<char>
144  {
145  public:
146    ostrstream();
147    ostrstream(char*, int, ios_base::openmode = ios_base::out);
148    virtual ~ostrstream();
149
150    _GLIBCXX_CONST strstreambuf* rdbuf() const throw ();
151    void freeze(bool = true) throw();
152    char* str() throw ();
153    _GLIBCXX_PURE int pcount() const throw ();
154
155  private:
156    strstreambuf _M_buf;
157  };
158
159  // Class strstream
160  class strstream : public basic_iostream<char>
161  {
162  public:
163    typedef char                        char_type;
164    typedef char_traits<char>::int_type int_type;
165    typedef char_traits<char>::pos_type pos_type;
166    typedef char_traits<char>::off_type off_type;
167
168    strstream();
169    strstream(char*, int, ios_base::openmode = ios_base::in | ios_base::out);
170    virtual ~strstream();
171
172    _GLIBCXX_CONST strstreambuf* rdbuf() const throw ();
173    void freeze(bool = true) throw ();
174    _GLIBCXX_PURE int pcount() const throw ();
175    char* str() throw ();
176
177  private:
178    strstreambuf _M_buf;
179  };
180
181_GLIBCXX_END_NAMESPACE_VERSION
182} // namespace
183
184#endif
185