1 // Backward-compat support -*- C++ -*-
3 // Copyright (C) 2001-2022 Free Software Foundation, Inc.
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)
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.
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.
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/>.
27 * Silicon Graphics Computer Systems, Inc.
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.
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.
44 * This is a Standard C++ Library header.
47 #ifndef _BACKWARD_STRSTREAM
48 #define _BACKWARD_STRSTREAM
50 #include <backward/backward_warning.h>
56 namespace std _GLIBCXX_VISIBILITY(default)
58 _GLIBCXX_BEGIN_NAMESPACE_VERSION
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> >
66 typedef char_traits<char> _Traits;
67 typedef basic_streambuf<char, _Traits> _Base;
70 // Constructor, destructor
71 #if __cplusplus >= 201103L
72 strstreambuf() : strstreambuf(0) { }
73 explicit strstreambuf(streamsize __initial_capacity);
75 explicit strstreambuf(streamsize __initial_capacity = 0);
77 strstreambuf(void* (*__alloc)(size_t), void (*__free)(void*));
79 strstreambuf(char* __get, streamsize __n, char* __put = 0) throw ();
80 strstreambuf(signed char* __get, streamsize __n, signed char* __put = 0) throw ();
81 strstreambuf(unsigned char* __get, streamsize __n, unsigned char* __put=0) throw ();
83 strstreambuf(const char* __get, streamsize __n) throw ();
84 strstreambuf(const signed char* __get, streamsize __n) throw ();
85 strstreambuf(const unsigned char* __get, streamsize __n) throw ();
87 virtual ~strstreambuf();
89 #if __cplusplus >= 201103L
90 strstreambuf(strstreambuf&& __rhs) noexcept
91 : _Base(__rhs), _M_alloc_fun(__rhs._M_alloc_fun),
92 _M_free_fun(__rhs._M_free_fun), _M_dynamic(__rhs._M_dynamic),
93 _M_frozen(__rhs._M_frozen), _M_constant(__rhs._M_constant)
95 __rhs.setg(nullptr, nullptr, nullptr);
96 __rhs.setp(nullptr, nullptr);
100 operator=(strstreambuf&& __rhs) noexcept
102 if (_M_dynamic && !_M_frozen)
104 _Base::operator=(static_cast<const _Base&>(__rhs));
105 _M_alloc_fun = __rhs._M_alloc_fun;
106 _M_free_fun = __rhs._M_free_fun;
107 _M_dynamic = __rhs._M_dynamic;
108 _M_frozen = __rhs._M_frozen;
109 _M_constant = __rhs._M_constant;
110 __rhs.setg(nullptr, nullptr, nullptr);
111 __rhs.setp(nullptr, nullptr);
117 void freeze(bool = true) throw ();
118 char* str() throw ();
119 _GLIBCXX_PURE int pcount() const throw ();
122 virtual int_type overflow(int_type __c = _Traits::eof());
123 virtual int_type pbackfail(int_type __c = _Traits::eof());
124 virtual int_type underflow();
125 virtual _Base* setbuf(char* __buf, streamsize __n);
126 virtual pos_type seekoff(off_type __off, ios_base::seekdir __dir,
127 ios_base::openmode __mode
128 = ios_base::in | ios_base::out);
129 virtual pos_type seekpos(pos_type __pos, ios_base::openmode __mode
130 = ios_base::in | ios_base::out);
133 #if __cplusplus < 201103L
135 operator=(const strstreambuf&);
137 strstreambuf(const strstreambuf&);
140 // Dynamic allocation, possibly using _M_alloc_fun and _M_free_fun.
141 char* _M_alloc(size_t);
144 // Helper function used in constructors.
145 void _M_setup(char* __get, char* __put, streamsize __n) throw ();
148 void* (*_M_alloc_fun)(size_t);
149 void (*_M_free_fun)(void*);
153 bool _M_constant : 1;
156 // Class istrstream, an istream that manages a strstreambuf.
157 class istrstream : public basic_istream<char>
160 explicit istrstream(char*);
161 explicit istrstream(const char*);
162 istrstream(char* , streamsize);
163 istrstream(const char*, streamsize);
164 virtual ~istrstream();
166 #if __cplusplus >= 201103L
167 istrstream(istrstream&& __rhs)
168 : istream(std::move(__rhs)), _M_buf(std::move(__rhs._M_buf))
169 { set_rdbuf(&_M_buf); }
171 istrstream& operator=(istrstream&&) = default;
174 _GLIBCXX_CONST strstreambuf* rdbuf() const throw ();
175 char* str() throw ();
182 class ostrstream : public basic_ostream<char>
186 ostrstream(char*, int, ios_base::openmode = ios_base::out);
187 virtual ~ostrstream();
189 #if __cplusplus >= 201103L
190 ostrstream(ostrstream&& __rhs)
191 : ostream(std::move(__rhs)), _M_buf(std::move(__rhs._M_buf))
192 { set_rdbuf(&_M_buf); }
194 ostrstream& operator=(ostrstream&&) = default;
197 _GLIBCXX_CONST strstreambuf* rdbuf() const throw ();
198 void freeze(bool = true) throw();
199 char* str() throw ();
200 _GLIBCXX_PURE int pcount() const throw ();
207 class strstream : public basic_iostream<char>
210 typedef char char_type;
211 typedef char_traits<char>::int_type int_type;
212 typedef char_traits<char>::pos_type pos_type;
213 typedef char_traits<char>::off_type off_type;
216 strstream(char*, int, ios_base::openmode = ios_base::in | ios_base::out);
217 virtual ~strstream();
219 #if __cplusplus >= 201103L
220 strstream(strstream&& __rhs)
221 : iostream(std::move(__rhs)), _M_buf(std::move(__rhs._M_buf))
222 { set_rdbuf(&_M_buf); }
224 strstream& operator=(strstream&&) = default;
227 _GLIBCXX_CONST strstreambuf* rdbuf() const throw ();
228 void freeze(bool = true) throw ();
229 _GLIBCXX_PURE int pcount() const throw ();
230 char* str() throw ();
236 _GLIBCXX_END_NAMESPACE_VERSION