master
1// -*- C++ -*-
2//===----------------------------------------------------------------------===//
3//
4// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
5// See https://llvm.org/LICENSE.txt for license information.
6// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
7//
8//===----------------------------------------------------------------------===//
9
10#ifndef _LIBCPP_STRSTREAM
11#define _LIBCPP_STRSTREAM
12
13/*
14 strstream synopsis
15
16class strstreambuf // Removed in C++26
17 : public basic_streambuf<char>
18{
19public:
20 explicit strstreambuf(streamsize alsize_arg = 0); // before C++20
21 strstreambuf() : strstreambuf(0) {} // C++20
22 explicit strstreambuf(streamsize alsize_arg); // C++20
23
24 strstreambuf(void* (*palloc_arg)(size_t), void (*pfree_arg)(void*));
25 strstreambuf(char* gnext_arg, streamsize n, char* pbeg_arg = nullptr);
26 strstreambuf(const char* gnext_arg, streamsize n);
27
28 strstreambuf(signed char* gnext_arg, streamsize n, signed char* pbeg_arg = nullptr);
29 strstreambuf(const signed char* gnext_arg, streamsize n);
30 strstreambuf(unsigned char* gnext_arg, streamsize n, unsigned char* pbeg_arg = nullptr);
31 strstreambuf(const unsigned char* gnext_arg, streamsize n);
32
33 strstreambuf(strstreambuf&& rhs);
34 strstreambuf& operator=(strstreambuf&& rhs);
35
36 virtual ~strstreambuf();
37
38 void swap(strstreambuf& rhs);
39
40 void freeze(bool freezefl = true);
41 char* str();
42 int pcount() const;
43
44protected:
45 virtual int_type overflow (int_type c = EOF);
46 virtual int_type pbackfail(int_type c = EOF);
47 virtual int_type underflow();
48 virtual pos_type seekoff(off_type off, ios_base::seekdir way,
49 ios_base::openmode which = ios_base::in | ios_base::out);
50 virtual pos_type seekpos(pos_type sp,
51 ios_base::openmode which = ios_base::in | ios_base::out);
52 virtual streambuf* setbuf(char* s, streamsize n);
53
54private:
55 typedef T1 strstate; // exposition only
56 static const strstate allocated; // exposition only
57 static const strstate constant; // exposition only
58 static const strstate dynamic; // exposition only
59 static const strstate frozen; // exposition only
60 strstate strmode; // exposition only
61 streamsize alsize; // exposition only
62 void* (*palloc)(size_t); // exposition only
63 void (*pfree)(void*); // exposition only
64};
65
66class istrstream // Removed in C++26
67 : public basic_istream<char>
68{
69public:
70 explicit istrstream(const char* s);
71 explicit istrstream(char* s);
72 istrstream(const char* s, streamsize n);
73 istrstream(char* s, streamsize n);
74
75 virtual ~istrstream();
76
77 strstreambuf* rdbuf() const;
78 char *str();
79
80private:
81 strstreambuf sb; // exposition only
82};
83
84class ostrstream // Removed in C++26
85 : public basic_ostream<char>
86{
87public:
88 ostrstream();
89 ostrstream(char* s, int n, ios_base::openmode mode = ios_base::out);
90
91 virtual ~ostrstream();
92
93 strstreambuf* rdbuf() const;
94 void freeze(bool freezefl = true);
95 char* str();
96 int pcount() const;
97
98private:
99 strstreambuf sb; // exposition only
100};
101
102class strstream // Removed in C++26
103 : public basic_iostream<char>
104{
105public:
106 // Types
107 typedef char char_type;
108 typedef char_traits<char>::int_type int_type;
109 typedef char_traits<char>::pos_type pos_type;
110 typedef char_traits<char>::off_type off_type;
111
112 // constructors/destructor
113 strstream();
114 strstream(char* s, int n, ios_base::openmode mode = ios_base::in | ios_base::out);
115
116 virtual ~strstream();
117
118 // Members:
119 strstreambuf* rdbuf() const;
120 void freeze(bool freezefl = true);
121 int pcount() const;
122 char* str();
123
124private:
125 strstreambuf sb; // exposition only
126};
127
128} // std
129
130*/
131
132#if __cplusplus < 201103L && defined(_LIBCPP_USE_FROZEN_CXX03_HEADERS)
133# include <__cxx03/strstream>
134#else
135# include <__config>
136
137# if _LIBCPP_HAS_LOCALIZATION
138
139# include <__ostream/basic_ostream.h>
140# include <istream>
141# include <streambuf>
142# include <version>
143
144# if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
145# pragma GCC system_header
146# endif
147
148# if _LIBCPP_STD_VER < 26 || defined(_LIBCPP_ENABLE_CXX26_REMOVED_STRSTREAM) || defined(_LIBCPP_BUILDING_LIBRARY)
149
150_LIBCPP_PUSH_MACROS
151# include <__undef_macros>
152
153_LIBCPP_BEGIN_NAMESPACE_STD
154
155class _LIBCPP_DEPRECATED _LIBCPP_EXPORTED_FROM_ABI strstreambuf : public streambuf {
156public:
157# ifndef _LIBCPP_CXX03_LANG
158 _LIBCPP_HIDE_FROM_ABI strstreambuf() : strstreambuf(0) {}
159 explicit strstreambuf(streamsize __alsize);
160# else
161 explicit strstreambuf(streamsize __alsize = 0);
162# endif
163 strstreambuf(void* (*__palloc)(size_t), void (*__pfree)(void*));
164 strstreambuf(char* __gnext, streamsize __n, char* __pbeg = nullptr);
165 strstreambuf(const char* __gnext, streamsize __n);
166
167 strstreambuf(signed char* __gnext, streamsize __n, signed char* __pbeg = nullptr);
168 strstreambuf(const signed char* __gnext, streamsize __n);
169 strstreambuf(unsigned char* __gnext, streamsize __n, unsigned char* __pbeg = nullptr);
170 strstreambuf(const unsigned char* __gnext, streamsize __n);
171
172# ifndef _LIBCPP_CXX03_LANG
173 _LIBCPP_HIDE_FROM_ABI strstreambuf(strstreambuf&& __rhs);
174 _LIBCPP_HIDE_FROM_ABI strstreambuf& operator=(strstreambuf&& __rhs);
175# endif // _LIBCPP_CXX03_LANG
176
177 ~strstreambuf() override;
178
179 void swap(strstreambuf& __rhs);
180
181 void freeze(bool __freezefl = true);
182 char* str();
183 int pcount() const;
184
185protected:
186 int_type overflow(int_type __c = EOF) override;
187 int_type pbackfail(int_type __c = EOF) override;
188 int_type underflow() override;
189 pos_type
190 seekoff(off_type __off, ios_base::seekdir __way, ios_base::openmode __which = ios_base::in | ios_base::out) override;
191 pos_type seekpos(pos_type __sp, ios_base::openmode __which = ios_base::in | ios_base::out) override;
192
193private:
194 typedef unsigned __mode_type;
195 static const __mode_type __allocated = 0x01;
196 static const __mode_type __constant = 0x02;
197 static const __mode_type __dynamic = 0x04;
198 static const __mode_type __frozen = 0x08;
199 static const streamsize __default_alsize = 4096;
200
201 __mode_type __strmode_;
202 streamsize __alsize_;
203 void* (*__palloc_)(size_t);
204 void (*__pfree_)(void*);
205
206 void __init(char* __gnext, streamsize __n, char* __pbeg);
207};
208
209# ifndef _LIBCPP_CXX03_LANG
210
211inline _LIBCPP_HIDE_FROM_ABI strstreambuf::strstreambuf(strstreambuf&& __rhs)
212 : streambuf(__rhs),
213 __strmode_(__rhs.__strmode_),
214 __alsize_(__rhs.__alsize_),
215 __palloc_(__rhs.__palloc_),
216 __pfree_(__rhs.__pfree_) {
217 __rhs.setg(nullptr, nullptr, nullptr);
218 __rhs.setp(nullptr, nullptr);
219}
220
221inline _LIBCPP_HIDE_FROM_ABI strstreambuf& strstreambuf::operator=(strstreambuf&& __rhs) {
222 if (eback() && (__strmode_ & __allocated) != 0 && (__strmode_ & __frozen) == 0) {
223 if (__pfree_)
224 __pfree_(eback());
225 else
226 delete[] eback();
227 }
228 streambuf::operator=(__rhs);
229 __strmode_ = __rhs.__strmode_;
230 __alsize_ = __rhs.__alsize_;
231 __palloc_ = __rhs.__palloc_;
232 __pfree_ = __rhs.__pfree_;
233 __rhs.setg(nullptr, nullptr, nullptr);
234 __rhs.setp(nullptr, nullptr);
235 return *this;
236}
237
238# endif // _LIBCPP_CXX03_LANG
239
240class _LIBCPP_DEPRECATED _LIBCPP_EXPORTED_FROM_ABI istrstream : public istream {
241public:
242 _LIBCPP_HIDE_FROM_ABI explicit istrstream(const char* __s) : istream(&__sb_), __sb_(__s, 0) {}
243 _LIBCPP_HIDE_FROM_ABI explicit istrstream(char* __s) : istream(&__sb_), __sb_(__s, 0) {}
244 _LIBCPP_HIDE_FROM_ABI istrstream(const char* __s, streamsize __n) : istream(&__sb_), __sb_(__s, __n) {}
245 _LIBCPP_HIDE_FROM_ABI istrstream(char* __s, streamsize __n) : istream(&__sb_), __sb_(__s, __n) {}
246
247# ifndef _LIBCPP_CXX03_LANG
248 _LIBCPP_HIDE_FROM_ABI istrstream(istrstream&& __rhs) // extension
249 : istream(std::move(static_cast<istream&>(__rhs))), __sb_(std::move(__rhs.__sb_)) {
250 istream::set_rdbuf(&__sb_);
251 }
252
253 _LIBCPP_HIDE_FROM_ABI istrstream& operator=(istrstream&& __rhs) {
254 __sb_ = std::move(__rhs.__sb_);
255 istream::operator=(std::move(__rhs));
256 return *this;
257 }
258# endif // _LIBCPP_CXX03_LANG
259
260 ~istrstream() override;
261
262 _LIBCPP_HIDE_FROM_ABI void swap(istrstream& __rhs) {
263 istream::swap(__rhs);
264 __sb_.swap(__rhs.__sb_);
265 }
266
267 _LIBCPP_HIDE_FROM_ABI strstreambuf* rdbuf() const { return const_cast<strstreambuf*>(&__sb_); }
268 _LIBCPP_HIDE_FROM_ABI char* str() { return __sb_.str(); }
269
270private:
271 strstreambuf __sb_;
272};
273
274class _LIBCPP_DEPRECATED _LIBCPP_EXPORTED_FROM_ABI ostrstream : public ostream {
275public:
276 _LIBCPP_HIDE_FROM_ABI ostrstream() : ostream(&__sb_) {}
277 _LIBCPP_HIDE_FROM_ABI ostrstream(char* __s, int __n, ios_base::openmode __mode = ios_base::out)
278 : ostream(&__sb_), __sb_(__s, __n, __s + (__mode & ios::app ? std::strlen(__s) : 0)) {}
279
280# ifndef _LIBCPP_CXX03_LANG
281 _LIBCPP_HIDE_FROM_ABI ostrstream(ostrstream&& __rhs) // extension
282 : ostream(std::move(static_cast<ostream&>(__rhs))), __sb_(std::move(__rhs.__sb_)) {
283 ostream::set_rdbuf(&__sb_);
284 }
285
286 _LIBCPP_HIDE_FROM_ABI ostrstream& operator=(ostrstream&& __rhs) {
287 __sb_ = std::move(__rhs.__sb_);
288 ostream::operator=(std::move(__rhs));
289 return *this;
290 }
291# endif // _LIBCPP_CXX03_LANG
292
293 ~ostrstream() override;
294
295 _LIBCPP_HIDE_FROM_ABI void swap(ostrstream& __rhs) {
296 ostream::swap(__rhs);
297 __sb_.swap(__rhs.__sb_);
298 }
299
300 _LIBCPP_HIDE_FROM_ABI strstreambuf* rdbuf() const { return const_cast<strstreambuf*>(&__sb_); }
301 _LIBCPP_HIDE_FROM_ABI void freeze(bool __freezefl = true) { __sb_.freeze(__freezefl); }
302 _LIBCPP_HIDE_FROM_ABI char* str() { return __sb_.str(); }
303 _LIBCPP_HIDE_FROM_ABI int pcount() const { return __sb_.pcount(); }
304
305private:
306 strstreambuf __sb_; // exposition only
307};
308
309class _LIBCPP_DEPRECATED _LIBCPP_EXPORTED_FROM_ABI strstream : public iostream {
310public:
311 // Types
312 typedef char char_type;
313 typedef char_traits<char>::int_type int_type;
314 typedef char_traits<char>::pos_type pos_type;
315 typedef char_traits<char>::off_type off_type;
316
317 // constructors/destructor
318 _LIBCPP_HIDE_FROM_ABI strstream() : iostream(&__sb_) {}
319 _LIBCPP_HIDE_FROM_ABI strstream(char* __s, int __n, ios_base::openmode __mode = ios_base::in | ios_base::out)
320 : iostream(&__sb_), __sb_(__s, __n, __s + (__mode & ios::app ? std::strlen(__s) : 0)) {}
321
322# ifndef _LIBCPP_CXX03_LANG
323 _LIBCPP_HIDE_FROM_ABI strstream(strstream&& __rhs) // extension
324 : iostream(std::move(static_cast<iostream&>(__rhs))), __sb_(std::move(__rhs.__sb_)) {
325 iostream::set_rdbuf(&__sb_);
326 }
327
328 _LIBCPP_HIDE_FROM_ABI strstream& operator=(strstream&& __rhs) {
329 __sb_ = std::move(__rhs.__sb_);
330 iostream::operator=(std::move(__rhs));
331 return *this;
332 }
333# endif // _LIBCPP_CXX03_LANG
334
335 ~strstream() override;
336
337 _LIBCPP_HIDE_FROM_ABI void swap(strstream& __rhs) {
338 iostream::swap(__rhs);
339 __sb_.swap(__rhs.__sb_);
340 }
341
342 // Members:
343 _LIBCPP_HIDE_FROM_ABI strstreambuf* rdbuf() const { return const_cast<strstreambuf*>(&__sb_); }
344 _LIBCPP_HIDE_FROM_ABI void freeze(bool __freezefl = true) { __sb_.freeze(__freezefl); }
345 _LIBCPP_HIDE_FROM_ABI int pcount() const { return __sb_.pcount(); }
346 _LIBCPP_HIDE_FROM_ABI char* str() { return __sb_.str(); }
347
348private:
349 strstreambuf __sb_; // exposition only
350};
351
352_LIBCPP_END_NAMESPACE_STD
353
354_LIBCPP_POP_MACROS
355
356# endif // _LIBCPP_STD_VER < 26 || defined(_LIBCPP_ENABLE_CXX26_REMOVED_STRSTREAM) ||
357 // defined(_LIBCPP_BUILDING_LIBRARY)
358
359# endif // _LIBCPP_HAS_LOCALIZATION
360
361#endif // __cplusplus < 201103L && defined(_LIBCPP_USE_FROZEN_CXX03_HEADERS)
362
363#endif // _LIBCPP_STRSTREAM