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# include <__ostream/basic_ostream.h> 137# include <istream> 138# include <streambuf> 139# include <version> 140 141# if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 142# pragma GCC system_header 143# endif 144 145# if _LIBCPP_STD_VER < 26 || defined(_LIBCPP_ENABLE_CXX26_REMOVED_STRSTREAM) || defined(_LIBCPP_BUILDING_LIBRARY) 146 147_LIBCPP_PUSH_MACROS 148# include <__undef_macros> 149 150_LIBCPP_BEGIN_NAMESPACE_STD 151 152class _LIBCPP_DEPRECATED _LIBCPP_EXPORTED_FROM_ABI strstreambuf : public streambuf { 153public: 154# ifndef _LIBCPP_CXX03_LANG 155 _LIBCPP_HIDE_FROM_ABI strstreambuf() : strstreambuf(0) {} 156 explicit strstreambuf(streamsize __alsize); 157# else 158 explicit strstreambuf(streamsize __alsize = 0); 159# endif 160 strstreambuf(void* (*__palloc)(size_t), void (*__pfree)(void*)); 161 strstreambuf(char* __gnext, streamsize __n, char* __pbeg = nullptr); 162 strstreambuf(const char* __gnext, streamsize __n); 163 164 strstreambuf(signed char* __gnext, streamsize __n, signed char* __pbeg = nullptr); 165 strstreambuf(const signed char* __gnext, streamsize __n); 166 strstreambuf(unsigned char* __gnext, streamsize __n, unsigned char* __pbeg = nullptr); 167 strstreambuf(const unsigned char* __gnext, streamsize __n); 168 169# ifndef _LIBCPP_CXX03_LANG 170 _LIBCPP_HIDE_FROM_ABI strstreambuf(strstreambuf&& __rhs); 171 _LIBCPP_HIDE_FROM_ABI strstreambuf& operator=(strstreambuf&& __rhs); 172# endif // _LIBCPP_CXX03_LANG 173 174 ~strstreambuf() override; 175 176 void swap(strstreambuf& __rhs); 177 178 void freeze(bool __freezefl = true); 179 char* str(); 180 int pcount() const; 181 182protected: 183 int_type overflow(int_type __c = EOF) override; 184 int_type pbackfail(int_type __c = EOF) override; 185 int_type underflow() override; 186 pos_type 187 seekoff(off_type __off, ios_base::seekdir __way, ios_base::openmode __which = ios_base::in | ios_base::out) override; 188 pos_type seekpos(pos_type __sp, ios_base::openmode __which = ios_base::in | ios_base::out) override; 189 190private: 191 typedef unsigned __mode_type; 192 static const __mode_type __allocated = 0x01; 193 static const __mode_type __constant = 0x02; 194 static const __mode_type __dynamic = 0x04; 195 static const __mode_type __frozen = 0x08; 196 static const streamsize __default_alsize = 4096; 197 198 __mode_type __strmode_; 199 streamsize __alsize_; 200 void* (*__palloc_)(size_t); 201 void (*__pfree_)(void*); 202 203 void __init(char* __gnext, streamsize __n, char* __pbeg); 204}; 205 206# ifndef _LIBCPP_CXX03_LANG 207 208inline _LIBCPP_HIDE_FROM_ABI strstreambuf::strstreambuf(strstreambuf&& __rhs) 209 : streambuf(__rhs), 210 __strmode_(__rhs.__strmode_), 211 __alsize_(__rhs.__alsize_), 212 __palloc_(__rhs.__palloc_), 213 __pfree_(__rhs.__pfree_) { 214 __rhs.setg(nullptr, nullptr, nullptr); 215 __rhs.setp(nullptr, nullptr); 216} 217 218inline _LIBCPP_HIDE_FROM_ABI strstreambuf& strstreambuf::operator=(strstreambuf&& __rhs) { 219 if (eback() && (__strmode_ & __allocated) != 0 && (__strmode_ & __frozen) == 0) { 220 if (__pfree_) 221 __pfree_(eback()); 222 else 223 delete[] eback(); 224 } 225 streambuf::operator=(__rhs); 226 __strmode_ = __rhs.__strmode_; 227 __alsize_ = __rhs.__alsize_; 228 __palloc_ = __rhs.__palloc_; 229 __pfree_ = __rhs.__pfree_; 230 __rhs.setg(nullptr, nullptr, nullptr); 231 __rhs.setp(nullptr, nullptr); 232 return *this; 233} 234 235# endif // _LIBCPP_CXX03_LANG 236 237class _LIBCPP_DEPRECATED _LIBCPP_EXPORTED_FROM_ABI istrstream : public istream { 238public: 239 _LIBCPP_HIDE_FROM_ABI explicit istrstream(const char* __s) : istream(&__sb_), __sb_(__s, 0) {} 240 _LIBCPP_HIDE_FROM_ABI explicit istrstream(char* __s) : istream(&__sb_), __sb_(__s, 0) {} 241 _LIBCPP_HIDE_FROM_ABI istrstream(const char* __s, streamsize __n) : istream(&__sb_), __sb_(__s, __n) {} 242 _LIBCPP_HIDE_FROM_ABI istrstream(char* __s, streamsize __n) : istream(&__sb_), __sb_(__s, __n) {} 243 244# ifndef _LIBCPP_CXX03_LANG 245 _LIBCPP_HIDE_FROM_ABI istrstream(istrstream&& __rhs) // extension 246 : istream(std::move(static_cast<istream&>(__rhs))), __sb_(std::move(__rhs.__sb_)) { 247 istream::set_rdbuf(&__sb_); 248 } 249 250 _LIBCPP_HIDE_FROM_ABI istrstream& operator=(istrstream&& __rhs) { 251 __sb_ = std::move(__rhs.__sb_); 252 istream::operator=(std::move(__rhs)); 253 return *this; 254 } 255# endif // _LIBCPP_CXX03_LANG 256 257 ~istrstream() override; 258 259 _LIBCPP_HIDE_FROM_ABI void swap(istrstream& __rhs) { 260 istream::swap(__rhs); 261 __sb_.swap(__rhs.__sb_); 262 } 263 264 _LIBCPP_HIDE_FROM_ABI strstreambuf* rdbuf() const { return const_cast<strstreambuf*>(&__sb_); } 265 _LIBCPP_HIDE_FROM_ABI char* str() { return __sb_.str(); } 266 267private: 268 strstreambuf __sb_; 269}; 270 271class _LIBCPP_DEPRECATED _LIBCPP_EXPORTED_FROM_ABI ostrstream : public ostream { 272public: 273 _LIBCPP_HIDE_FROM_ABI ostrstream() : ostream(&__sb_) {} 274 _LIBCPP_HIDE_FROM_ABI ostrstream(char* __s, int __n, ios_base::openmode __mode = ios_base::out) 275 : ostream(&__sb_), __sb_(__s, __n, __s + (__mode & ios::app ? std::strlen(__s) : 0)) {} 276 277# ifndef _LIBCPP_CXX03_LANG 278 _LIBCPP_HIDE_FROM_ABI ostrstream(ostrstream&& __rhs) // extension 279 : ostream(std::move(static_cast<ostream&>(__rhs))), __sb_(std::move(__rhs.__sb_)) { 280 ostream::set_rdbuf(&__sb_); 281 } 282 283 _LIBCPP_HIDE_FROM_ABI ostrstream& operator=(ostrstream&& __rhs) { 284 __sb_ = std::move(__rhs.__sb_); 285 ostream::operator=(std::move(__rhs)); 286 return *this; 287 } 288# endif // _LIBCPP_CXX03_LANG 289 290 ~ostrstream() override; 291 292 _LIBCPP_HIDE_FROM_ABI void swap(ostrstream& __rhs) { 293 ostream::swap(__rhs); 294 __sb_.swap(__rhs.__sb_); 295 } 296 297 _LIBCPP_HIDE_FROM_ABI strstreambuf* rdbuf() const { return const_cast<strstreambuf*>(&__sb_); } 298 _LIBCPP_HIDE_FROM_ABI void freeze(bool __freezefl = true) { __sb_.freeze(__freezefl); } 299 _LIBCPP_HIDE_FROM_ABI char* str() { return __sb_.str(); } 300 _LIBCPP_HIDE_FROM_ABI int pcount() const { return __sb_.pcount(); } 301 302private: 303 strstreambuf __sb_; // exposition only 304}; 305 306class _LIBCPP_DEPRECATED _LIBCPP_EXPORTED_FROM_ABI strstream : public iostream { 307public: 308 // Types 309 typedef char char_type; 310 typedef char_traits<char>::int_type int_type; 311 typedef char_traits<char>::pos_type pos_type; 312 typedef char_traits<char>::off_type off_type; 313 314 // constructors/destructor 315 _LIBCPP_HIDE_FROM_ABI strstream() : iostream(&__sb_) {} 316 _LIBCPP_HIDE_FROM_ABI strstream(char* __s, int __n, ios_base::openmode __mode = ios_base::in | ios_base::out) 317 : iostream(&__sb_), __sb_(__s, __n, __s + (__mode & ios::app ? std::strlen(__s) : 0)) {} 318 319# ifndef _LIBCPP_CXX03_LANG 320 _LIBCPP_HIDE_FROM_ABI strstream(strstream&& __rhs) // extension 321 : iostream(std::move(static_cast<iostream&>(__rhs))), __sb_(std::move(__rhs.__sb_)) { 322 iostream::set_rdbuf(&__sb_); 323 } 324 325 _LIBCPP_HIDE_FROM_ABI strstream& operator=(strstream&& __rhs) { 326 __sb_ = std::move(__rhs.__sb_); 327 iostream::operator=(std::move(__rhs)); 328 return *this; 329 } 330# endif // _LIBCPP_CXX03_LANG 331 332 ~strstream() override; 333 334 _LIBCPP_HIDE_FROM_ABI void swap(strstream& __rhs) { 335 iostream::swap(__rhs); 336 __sb_.swap(__rhs.__sb_); 337 } 338 339 // Members: 340 _LIBCPP_HIDE_FROM_ABI strstreambuf* rdbuf() const { return const_cast<strstreambuf*>(&__sb_); } 341 _LIBCPP_HIDE_FROM_ABI void freeze(bool __freezefl = true) { __sb_.freeze(__freezefl); } 342 _LIBCPP_HIDE_FROM_ABI int pcount() const { return __sb_.pcount(); } 343 _LIBCPP_HIDE_FROM_ABI char* str() { return __sb_.str(); } 344 345private: 346 strstreambuf __sb_; // exposition only 347}; 348 349_LIBCPP_END_NAMESPACE_STD 350 351_LIBCPP_POP_MACROS 352 353# endif // _LIBCPP_STD_VER < 26 || defined(_LIBCPP_ENABLE_CXX26_REMOVED_STRSTREAM) || defined(_LIBCPP_BUILDING_LIBRARY) 354#endif // __cplusplus < 201103L && defined(_LIBCPP_USE_FROZEN_CXX03_HEADERS) 355 356#endif // _LIBCPP_STRSTREAM 357