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#include <__config> 133#include <__ostream/basic_ostream.h> 134#include <istream> 135#include <streambuf> 136#include <version> 137 138#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 139# pragma GCC system_header 140#endif 141 142#if _LIBCPP_STD_VER < 26 || defined(_LIBCPP_ENABLE_CXX26_REMOVED_STRSTREAM) || defined(_LIBCPP_BUILDING_LIBRARY) 143 144_LIBCPP_PUSH_MACROS 145# include <__undef_macros> 146 147_LIBCPP_BEGIN_NAMESPACE_STD 148 149class _LIBCPP_DEPRECATED _LIBCPP_EXPORTED_FROM_ABI strstreambuf : public streambuf { 150public: 151# ifndef _LIBCPP_CXX03_LANG 152 _LIBCPP_HIDE_FROM_ABI strstreambuf() : strstreambuf(0) {} 153 explicit strstreambuf(streamsize __alsize); 154# else 155 explicit strstreambuf(streamsize __alsize = 0); 156# endif 157 strstreambuf(void* (*__palloc)(size_t), void (*__pfree)(void*)); 158 strstreambuf(char* __gnext, streamsize __n, char* __pbeg = nullptr); 159 strstreambuf(const char* __gnext, streamsize __n); 160 161 strstreambuf(signed char* __gnext, streamsize __n, signed char* __pbeg = nullptr); 162 strstreambuf(const signed char* __gnext, streamsize __n); 163 strstreambuf(unsigned char* __gnext, streamsize __n, unsigned char* __pbeg = nullptr); 164 strstreambuf(const unsigned char* __gnext, streamsize __n); 165 166# ifndef _LIBCPP_CXX03_LANG 167 _LIBCPP_HIDE_FROM_ABI strstreambuf(strstreambuf&& __rhs); 168 _LIBCPP_HIDE_FROM_ABI strstreambuf& operator=(strstreambuf&& __rhs); 169# endif // _LIBCPP_CXX03_LANG 170 171 ~strstreambuf() override; 172 173 void swap(strstreambuf& __rhs); 174 175 void freeze(bool __freezefl = true); 176 char* str(); 177 int pcount() const; 178 179protected: 180 int_type overflow(int_type __c = EOF) override; 181 int_type pbackfail(int_type __c = EOF) override; 182 int_type underflow() override; 183 pos_type 184 seekoff(off_type __off, ios_base::seekdir __way, ios_base::openmode __which = ios_base::in | ios_base::out) override; 185 pos_type seekpos(pos_type __sp, ios_base::openmode __which = ios_base::in | ios_base::out) override; 186 187private: 188 typedef unsigned __mode_type; 189 static const __mode_type __allocated = 0x01; 190 static const __mode_type __constant = 0x02; 191 static const __mode_type __dynamic = 0x04; 192 static const __mode_type __frozen = 0x08; 193 static const streamsize __default_alsize = 4096; 194 195 __mode_type __strmode_; 196 streamsize __alsize_; 197 void* (*__palloc_)(size_t); 198 void (*__pfree_)(void*); 199 200 void __init(char* __gnext, streamsize __n, char* __pbeg); 201}; 202 203# ifndef _LIBCPP_CXX03_LANG 204 205inline _LIBCPP_HIDE_FROM_ABI strstreambuf::strstreambuf(strstreambuf&& __rhs) 206 : streambuf(__rhs), 207 __strmode_(__rhs.__strmode_), 208 __alsize_(__rhs.__alsize_), 209 __palloc_(__rhs.__palloc_), 210 __pfree_(__rhs.__pfree_) { 211 __rhs.setg(nullptr, nullptr, nullptr); 212 __rhs.setp(nullptr, nullptr); 213} 214 215inline _LIBCPP_HIDE_FROM_ABI strstreambuf& strstreambuf::operator=(strstreambuf&& __rhs) { 216 if (eback() && (__strmode_ & __allocated) != 0 && (__strmode_ & __frozen) == 0) { 217 if (__pfree_) 218 __pfree_(eback()); 219 else 220 delete[] eback(); 221 } 222 streambuf::operator=(__rhs); 223 __strmode_ = __rhs.__strmode_; 224 __alsize_ = __rhs.__alsize_; 225 __palloc_ = __rhs.__palloc_; 226 __pfree_ = __rhs.__pfree_; 227 __rhs.setg(nullptr, nullptr, nullptr); 228 __rhs.setp(nullptr, nullptr); 229 return *this; 230} 231 232# endif // _LIBCPP_CXX03_LANG 233 234class _LIBCPP_DEPRECATED _LIBCPP_EXPORTED_FROM_ABI istrstream : public istream { 235public: 236 _LIBCPP_HIDE_FROM_ABI explicit istrstream(const char* __s) : istream(&__sb_), __sb_(__s, 0) {} 237 _LIBCPP_HIDE_FROM_ABI explicit istrstream(char* __s) : istream(&__sb_), __sb_(__s, 0) {} 238 _LIBCPP_HIDE_FROM_ABI istrstream(const char* __s, streamsize __n) : istream(&__sb_), __sb_(__s, __n) {} 239 _LIBCPP_HIDE_FROM_ABI istrstream(char* __s, streamsize __n) : istream(&__sb_), __sb_(__s, __n) {} 240 241# ifndef _LIBCPP_CXX03_LANG 242 _LIBCPP_HIDE_FROM_ABI istrstream(istrstream&& __rhs) // extension 243 : istream(std::move(static_cast<istream&>(__rhs))), __sb_(std::move(__rhs.__sb_)) { 244 istream::set_rdbuf(&__sb_); 245 } 246 247 _LIBCPP_HIDE_FROM_ABI istrstream& operator=(istrstream&& __rhs) { 248 __sb_ = std::move(__rhs.__sb_); 249 istream::operator=(std::move(__rhs)); 250 return *this; 251 } 252# endif // _LIBCPP_CXX03_LANG 253 254 ~istrstream() override; 255 256 _LIBCPP_HIDE_FROM_ABI void swap(istrstream& __rhs) { 257 istream::swap(__rhs); 258 __sb_.swap(__rhs.__sb_); 259 } 260 261 _LIBCPP_HIDE_FROM_ABI strstreambuf* rdbuf() const { return const_cast<strstreambuf*>(&__sb_); } 262 _LIBCPP_HIDE_FROM_ABI char* str() { return __sb_.str(); } 263 264private: 265 strstreambuf __sb_; 266}; 267 268class _LIBCPP_DEPRECATED _LIBCPP_EXPORTED_FROM_ABI ostrstream : public ostream { 269public: 270 _LIBCPP_HIDE_FROM_ABI ostrstream() : ostream(&__sb_) {} 271 _LIBCPP_HIDE_FROM_ABI ostrstream(char* __s, int __n, ios_base::openmode __mode = ios_base::out) 272 : ostream(&__sb_), __sb_(__s, __n, __s + (__mode & ios::app ? std::strlen(__s) : 0)) {} 273 274# ifndef _LIBCPP_CXX03_LANG 275 _LIBCPP_HIDE_FROM_ABI ostrstream(ostrstream&& __rhs) // extension 276 : ostream(std::move(static_cast<ostream&>(__rhs))), __sb_(std::move(__rhs.__sb_)) { 277 ostream::set_rdbuf(&__sb_); 278 } 279 280 _LIBCPP_HIDE_FROM_ABI ostrstream& operator=(ostrstream&& __rhs) { 281 __sb_ = std::move(__rhs.__sb_); 282 ostream::operator=(std::move(__rhs)); 283 return *this; 284 } 285# endif // _LIBCPP_CXX03_LANG 286 287 ~ostrstream() override; 288 289 _LIBCPP_HIDE_FROM_ABI void swap(ostrstream& __rhs) { 290 ostream::swap(__rhs); 291 __sb_.swap(__rhs.__sb_); 292 } 293 294 _LIBCPP_HIDE_FROM_ABI strstreambuf* rdbuf() const { return const_cast<strstreambuf*>(&__sb_); } 295 _LIBCPP_HIDE_FROM_ABI void freeze(bool __freezefl = true) { __sb_.freeze(__freezefl); } 296 _LIBCPP_HIDE_FROM_ABI char* str() { return __sb_.str(); } 297 _LIBCPP_HIDE_FROM_ABI int pcount() const { return __sb_.pcount(); } 298 299private: 300 strstreambuf __sb_; // exposition only 301}; 302 303class _LIBCPP_DEPRECATED _LIBCPP_EXPORTED_FROM_ABI strstream : public iostream { 304public: 305 // Types 306 typedef char char_type; 307 typedef char_traits<char>::int_type int_type; 308 typedef char_traits<char>::pos_type pos_type; 309 typedef char_traits<char>::off_type off_type; 310 311 // constructors/destructor 312 _LIBCPP_HIDE_FROM_ABI strstream() : iostream(&__sb_) {} 313 _LIBCPP_HIDE_FROM_ABI strstream(char* __s, int __n, ios_base::openmode __mode = ios_base::in | ios_base::out) 314 : iostream(&__sb_), __sb_(__s, __n, __s + (__mode & ios::app ? std::strlen(__s) : 0)) {} 315 316# ifndef _LIBCPP_CXX03_LANG 317 _LIBCPP_HIDE_FROM_ABI strstream(strstream&& __rhs) // extension 318 : iostream(std::move(static_cast<iostream&>(__rhs))), __sb_(std::move(__rhs.__sb_)) { 319 iostream::set_rdbuf(&__sb_); 320 } 321 322 _LIBCPP_HIDE_FROM_ABI strstream& operator=(strstream&& __rhs) { 323 __sb_ = std::move(__rhs.__sb_); 324 iostream::operator=(std::move(__rhs)); 325 return *this; 326 } 327# endif // _LIBCPP_CXX03_LANG 328 329 ~strstream() override; 330 331 _LIBCPP_HIDE_FROM_ABI void swap(strstream& __rhs) { 332 iostream::swap(__rhs); 333 __sb_.swap(__rhs.__sb_); 334 } 335 336 // Members: 337 _LIBCPP_HIDE_FROM_ABI strstreambuf* rdbuf() const { return const_cast<strstreambuf*>(&__sb_); } 338 _LIBCPP_HIDE_FROM_ABI void freeze(bool __freezefl = true) { __sb_.freeze(__freezefl); } 339 _LIBCPP_HIDE_FROM_ABI int pcount() const { return __sb_.pcount(); } 340 _LIBCPP_HIDE_FROM_ABI char* str() { return __sb_.str(); } 341 342private: 343 strstreambuf __sb_; // exposition only 344}; 345 346_LIBCPP_END_NAMESPACE_STD 347 348_LIBCPP_POP_MACROS 349 350#endif // _LIBCPP_STD_VER < 26 || defined(_LIBCPP_ENABLE_CXX26_REMOVED_STRSTREAM) || defined(_LIBCPP_BUILDING_LIBRARY) 351 352#endif // _LIBCPP_STRSTREAM 353