1// Backward-compat support -*- C++ -*-
2
3// Copyright (C) 2001, 2002, 2004, 2005 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 2, 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 COPYING.  If not, write to the Free
18// Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
19// USA.
20
21// As a special exception, you may use this file as part of a free software
22// library without restriction.  Specifically, if other files instantiate
23// templates or use macros or inline functions from this file, or you compile
24// this file and link it with other files to produce an executable, this
25// file does not by itself cause the resulting executable to be covered by
26// the GNU General Public License.  This exception does not however
27// invalidate any other reasons why the executable file might be covered by
28// the GNU General Public License.
29
30/*
31 * Copyright (c) 1998
32 * Silicon Graphics Computer Systems, Inc.
33 *
34 * Permission to use, copy, modify, distribute and sell this software
35 * and its documentation for any purpose is hereby granted without fee,
36 * provided that the above copyright notice appear in all copies and
37 * that both that copyright notice and this permission notice appear
38 * in supporting documentation.  Silicon Graphics makes no
39 * representations about the suitability of this software for any
40 * purpose.  It is provided "as is" without express or implied warranty.
41 */
42
43// WARNING: The classes defined in this header are DEPRECATED.  This
44// header is defined in section D.7.1 of the C++ standard, and it
45// MAY BE REMOVED in a future standard revision.  You should use the
46// header <sstream> instead.
47
48#ifndef __SGI_STL_STRSTREAM
49#define __SGI_STL_STRSTREAM
50
51#include "backward_warning.h"
52#include <iosfwd>
53#include <ios>
54#include <istream>
55#include <ostream>
56#include <string>
57
58_GLIBCXX_BEGIN_NAMESPACE(std)
59
60  // Class strstreambuf, a streambuf class that manages an array of char.
61  // Note that this class is not a template.
62  class strstreambuf : public basic_streambuf<char, char_traits<char> >
63  {
64  public:
65    // Types.
66    typedef char_traits<char>              _Traits;
67    typedef basic_streambuf<char, _Traits> _Base;
68
69  public:
70    // Constructor, destructor
71    explicit strstreambuf(streamsize __initial_capacity = 0);
72    strstreambuf(void* (*__alloc)(size_t), void (*__free)(void*));
73
74    strstreambuf(char* __get, streamsize __n, char* __put = 0);
75    strstreambuf(signed char* __get, streamsize __n, signed char* __put = 0);
76    strstreambuf(unsigned char* __get, streamsize __n, unsigned char* __put=0);
77
78    strstreambuf(const char* __get, streamsize __n);
79    strstreambuf(const signed char* __get, streamsize __n);
80    strstreambuf(const unsigned char* __get, streamsize __n);
81
82    virtual ~strstreambuf();
83
84  public:
85    void freeze(bool = true);
86    char* str();
87    int pcount() const;
88
89  protected:
90    virtual int_type overflow(int_type __c  = _Traits::eof());
91    virtual int_type pbackfail(int_type __c = _Traits::eof());
92    virtual int_type underflow();
93    virtual _Base* setbuf(char* __buf, streamsize __n);
94    virtual pos_type seekoff(off_type __off, ios_base::seekdir __dir,
95			     ios_base::openmode __mode
96			     = ios_base::in | ios_base::out);
97    virtual pos_type seekpos(pos_type __pos, ios_base::openmode __mode
98			     = ios_base::in | ios_base::out);
99
100  private:
101    strstreambuf&
102    operator=(const strstreambuf&);
103
104    strstreambuf(const strstreambuf&);
105
106    // Dynamic allocation, possibly using _M_alloc_fun and _M_free_fun.
107    char* _M_alloc(size_t);
108    void  _M_free(char*);
109
110    // Helper function used in constructors.
111    void _M_setup(char* __get, char* __put, streamsize __n);
112
113  private:
114    // Data members.
115    void* (*_M_alloc_fun)(size_t);
116    void  (*_M_free_fun)(void*);
117
118    bool _M_dynamic  : 1;
119    bool _M_frozen   : 1;
120    bool _M_constant : 1;
121  };
122
123  // Class istrstream, an istream that manages a strstreambuf.
124  class istrstream : public basic_istream<char>
125  {
126  public:
127    explicit istrstream(char*);
128    explicit istrstream(const char*);
129    istrstream(char* , streamsize);
130    istrstream(const char*, streamsize);
131    virtual ~istrstream();
132
133    strstreambuf* rdbuf() const;
134    char* str();
135
136  private:
137    strstreambuf _M_buf;
138  };
139
140  // Class ostrstream
141  class ostrstream : public basic_ostream<char>
142  {
143  public:
144    ostrstream();
145    ostrstream(char*, int, ios_base::openmode = ios_base::out);
146    virtual ~ostrstream();
147
148    strstreambuf* rdbuf() const;
149    void freeze(bool = true);
150    char* str();
151    int pcount() const;
152
153  private:
154    strstreambuf _M_buf;
155  };
156
157  // Class strstream
158  class strstream : public basic_iostream<char>
159  {
160  public:
161    typedef char                        char_type;
162    typedef char_traits<char>::int_type int_type;
163    typedef char_traits<char>::pos_type pos_type;
164    typedef char_traits<char>::off_type off_type;
165
166    strstream();
167    strstream(char*, int, ios_base::openmode = ios_base::in | ios_base::out);
168    virtual ~strstream();
169
170    strstreambuf* rdbuf() const;
171    void freeze(bool = true);
172    int pcount() const;
173    char* str();
174
175  private:
176    strstreambuf _M_buf;
177  };
178
179_GLIBCXX_END_NAMESPACE
180
181#endif
182