1// -*- C++ -*- 2//===------------------------- fstream ------------------------------------===// 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_FSTREAM 11#define _LIBCPP_FSTREAM 12 13/* 14 fstream synopsis 15 16template <class charT, class traits = char_traits<charT> > 17class basic_filebuf 18 : public basic_streambuf<charT, traits> 19{ 20public: 21 typedef charT char_type; 22 typedef traits traits_type; 23 typedef typename traits_type::int_type int_type; 24 typedef typename traits_type::pos_type pos_type; 25 typedef typename traits_type::off_type off_type; 26 27 // 27.9.1.2 Constructors/destructor: 28 basic_filebuf(); 29 basic_filebuf(basic_filebuf&& rhs); 30 virtual ~basic_filebuf(); 31 32 // 27.9.1.3 Assign/swap: 33 basic_filebuf& operator=(basic_filebuf&& rhs); 34 void swap(basic_filebuf& rhs); 35 36 // 27.9.1.4 Members: 37 bool is_open() const; 38 basic_filebuf* open(const char* s, ios_base::openmode mode); 39 basic_filebuf* open(const string& s, ios_base::openmode mode); 40 basic_filebuf* open(const filesystem::path& p, ios_base::openmode mode); // C++17 41 basic_filebuf* close(); 42 43protected: 44 // 27.9.1.5 Overridden virtual functions: 45 virtual streamsize showmanyc(); 46 virtual int_type underflow(); 47 virtual int_type uflow(); 48 virtual int_type pbackfail(int_type c = traits_type::eof()); 49 virtual int_type overflow (int_type c = traits_type::eof()); 50 virtual basic_streambuf<char_type, traits_type>* setbuf(char_type* s, streamsize n); 51 virtual pos_type seekoff(off_type off, ios_base::seekdir way, 52 ios_base::openmode which = ios_base::in | ios_base::out); 53 virtual pos_type seekpos(pos_type sp, 54 ios_base::openmode which = ios_base::in | ios_base::out); 55 virtual int sync(); 56 virtual void imbue(const locale& loc); 57}; 58 59template <class charT, class traits> 60 void 61 swap(basic_filebuf<charT, traits>& x, basic_filebuf<charT, traits>& y); 62 63typedef basic_filebuf<char> filebuf; 64typedef basic_filebuf<wchar_t> wfilebuf; 65 66template <class charT, class traits = char_traits<charT> > 67class basic_ifstream 68 : public basic_istream<charT,traits> 69{ 70public: 71 typedef charT char_type; 72 typedef traits traits_type; 73 typedef typename traits_type::int_type int_type; 74 typedef typename traits_type::pos_type pos_type; 75 typedef typename traits_type::off_type off_type; 76 77 basic_ifstream(); 78 explicit basic_ifstream(const char* s, ios_base::openmode mode = ios_base::in); 79 explicit basic_ifstream(const string& s, ios_base::openmode mode = ios_base::in); 80 explicit basic_ifstream(const filesystem::path& p, 81 ios_base::openmode mode = ios_base::in); // C++17 82 basic_ifstream(basic_ifstream&& rhs); 83 84 basic_ifstream& operator=(basic_ifstream&& rhs); 85 void swap(basic_ifstream& rhs); 86 87 basic_filebuf<char_type, traits_type>* rdbuf() const; 88 bool is_open() const; 89 void open(const char* s, ios_base::openmode mode = ios_base::in); 90 void open(const string& s, ios_base::openmode mode = ios_base::in); 91 void open(const filesystem::path& s, ios_base::openmode mode = ios_base::in); // C++17 92 93 void close(); 94}; 95 96template <class charT, class traits> 97 void 98 swap(basic_ifstream<charT, traits>& x, basic_ifstream<charT, traits>& y); 99 100typedef basic_ifstream<char> ifstream; 101typedef basic_ifstream<wchar_t> wifstream; 102 103template <class charT, class traits = char_traits<charT> > 104class basic_ofstream 105 : public basic_ostream<charT,traits> 106{ 107public: 108 typedef charT char_type; 109 typedef traits traits_type; 110 typedef typename traits_type::int_type int_type; 111 typedef typename traits_type::pos_type pos_type; 112 typedef typename traits_type::off_type off_type; 113 114 basic_ofstream(); 115 explicit basic_ofstream(const char* s, ios_base::openmode mode = ios_base::out); 116 explicit basic_ofstream(const string& s, ios_base::openmode mode = ios_base::out); 117 explicit basic_ofstream(const filesystem::path& p, 118 ios_base::openmode mode = ios_base::out); // C++17 119 basic_ofstream(basic_ofstream&& rhs); 120 121 basic_ofstream& operator=(basic_ofstream&& rhs); 122 void swap(basic_ofstream& rhs); 123 124 basic_filebuf<char_type, traits_type>* rdbuf() const; 125 bool is_open() const; 126 void open(const char* s, ios_base::openmode mode = ios_base::out); 127 void open(const string& s, ios_base::openmode mode = ios_base::out); 128 void open(const filesystem::path& p, 129 ios_base::openmode mode = ios_base::out); // C++17 130 131 void close(); 132}; 133 134template <class charT, class traits> 135 void 136 swap(basic_ofstream<charT, traits>& x, basic_ofstream<charT, traits>& y); 137 138typedef basic_ofstream<char> ofstream; 139typedef basic_ofstream<wchar_t> wofstream; 140 141template <class charT, class traits=char_traits<charT> > 142class basic_fstream 143 : public basic_iostream<charT,traits> 144{ 145public: 146 typedef charT char_type; 147 typedef traits traits_type; 148 typedef typename traits_type::int_type int_type; 149 typedef typename traits_type::pos_type pos_type; 150 typedef typename traits_type::off_type off_type; 151 152 basic_fstream(); 153 explicit basic_fstream(const char* s, ios_base::openmode mode = ios_base::in|ios_base::out); 154 explicit basic_fstream(const string& s, ios_base::openmode mode = ios_base::in|ios_base::out); 155 explicit basic_fstream(const filesystem::path& p, 156 ios_base::openmode mode = ios_base::in|ios_base::out); C++17 157 basic_fstream(basic_fstream&& rhs); 158 159 basic_fstream& operator=(basic_fstream&& rhs); 160 void swap(basic_fstream& rhs); 161 162 basic_filebuf<char_type, traits_type>* rdbuf() const; 163 bool is_open() const; 164 void open(const char* s, ios_base::openmode mode = ios_base::in|ios_base::out); 165 void open(const string& s, ios_base::openmode mode = ios_base::in|ios_base::out); 166 void open(const filesystem::path& s, 167 ios_base::openmode mode = ios_base::in|ios_base::out); // C++17 168 169 void close(); 170}; 171 172template <class charT, class traits> 173 void swap(basic_fstream<charT, traits>& x, basic_fstream<charT, traits>& y); 174 175typedef basic_fstream<char> fstream; 176typedef basic_fstream<wchar_t> wfstream; 177 178} // std 179 180*/ 181 182#include <__config> 183#include <ostream> 184#include <istream> 185#include <__locale> 186#include <cstdio> 187#include <cstdlib> 188#include <filesystem> 189 190#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 191#pragma GCC system_header 192#endif 193 194_LIBCPP_PUSH_MACROS 195#include <__undef_macros> 196 197 198_LIBCPP_BEGIN_NAMESPACE_STD 199 200template <class _CharT, class _Traits> 201class _LIBCPP_TEMPLATE_VIS basic_filebuf 202 : public basic_streambuf<_CharT, _Traits> 203{ 204public: 205 typedef _CharT char_type; 206 typedef _Traits traits_type; 207 typedef typename traits_type::int_type int_type; 208 typedef typename traits_type::pos_type pos_type; 209 typedef typename traits_type::off_type off_type; 210 typedef typename traits_type::state_type state_type; 211 212 // 27.9.1.2 Constructors/destructor: 213 basic_filebuf(); 214#ifndef _LIBCPP_CXX03_LANG 215 basic_filebuf(basic_filebuf&& __rhs); 216#endif 217 virtual ~basic_filebuf(); 218 219 // 27.9.1.3 Assign/swap: 220#ifndef _LIBCPP_CXX03_LANG 221 _LIBCPP_INLINE_VISIBILITY 222 basic_filebuf& operator=(basic_filebuf&& __rhs); 223#endif 224 void swap(basic_filebuf& __rhs); 225 226 // 27.9.1.4 Members: 227 _LIBCPP_INLINE_VISIBILITY 228 bool is_open() const; 229#ifndef _LIBCPP_HAS_NO_GLOBAL_FILESYSTEM_NAMESPACE 230 basic_filebuf* open(const char* __s, ios_base::openmode __mode); 231#ifdef _LIBCPP_HAS_OPEN_WITH_WCHAR 232 basic_filebuf* open(const wchar_t* __s, ios_base::openmode __mode); 233#endif 234 _LIBCPP_INLINE_VISIBILITY 235 basic_filebuf* open(const string& __s, ios_base::openmode __mode); 236 237#if _LIBCPP_STD_VER >= 17 238 _LIBCPP_AVAILABILITY_FILESYSTEM _LIBCPP_INLINE_VISIBILITY 239 basic_filebuf* open(const _VSTD_FS::path& __p, ios_base::openmode __mode) { 240 return open(__p.c_str(), __mode); 241 } 242#endif 243 _LIBCPP_INLINE_VISIBILITY 244 basic_filebuf* __open(int __fd, ios_base::openmode __mode); 245#endif 246 basic_filebuf* close(); 247 248 _LIBCPP_INLINE_VISIBILITY 249 inline static const char* 250 __make_mdstring(ios_base::openmode __mode) _NOEXCEPT; 251 252 protected: 253 // 27.9.1.5 Overridden virtual functions: 254 virtual int_type underflow(); 255 virtual int_type pbackfail(int_type __c = traits_type::eof()); 256 virtual int_type overflow (int_type __c = traits_type::eof()); 257 virtual basic_streambuf<char_type, traits_type>* setbuf(char_type* __s, streamsize __n); 258 virtual pos_type seekoff(off_type __off, ios_base::seekdir __way, 259 ios_base::openmode __wch = ios_base::in | ios_base::out); 260 virtual pos_type seekpos(pos_type __sp, 261 ios_base::openmode __wch = ios_base::in | ios_base::out); 262 virtual int sync(); 263 virtual void imbue(const locale& __loc); 264 265private: 266 char* __extbuf_; 267 const char* __extbufnext_; 268 const char* __extbufend_; 269 char __extbuf_min_[8]; 270 size_t __ebs_; 271 char_type* __intbuf_; 272 size_t __ibs_; 273 FILE* __file_; 274 const codecvt<char_type, char, state_type>* __cv_; 275 state_type __st_; 276 state_type __st_last_; 277 ios_base::openmode __om_; 278 ios_base::openmode __cm_; 279 bool __owns_eb_; 280 bool __owns_ib_; 281 bool __always_noconv_; 282 283 bool __read_mode(); 284 void __write_mode(); 285}; 286 287template <class _CharT, class _Traits> 288basic_filebuf<_CharT, _Traits>::basic_filebuf() 289 : __extbuf_(0), 290 __extbufnext_(0), 291 __extbufend_(0), 292 __ebs_(0), 293 __intbuf_(0), 294 __ibs_(0), 295 __file_(0), 296 __cv_(nullptr), 297 __st_(), 298 __st_last_(), 299 __om_(0), 300 __cm_(0), 301 __owns_eb_(false), 302 __owns_ib_(false), 303 __always_noconv_(false) 304{ 305 if (has_facet<codecvt<char_type, char, state_type> >(this->getloc())) 306 { 307 __cv_ = &use_facet<codecvt<char_type, char, state_type> >(this->getloc()); 308 __always_noconv_ = __cv_->always_noconv(); 309 } 310 setbuf(0, 4096); 311} 312 313#ifndef _LIBCPP_CXX03_LANG 314 315template <class _CharT, class _Traits> 316basic_filebuf<_CharT, _Traits>::basic_filebuf(basic_filebuf&& __rhs) 317 : basic_streambuf<_CharT, _Traits>(__rhs) 318{ 319 if (__rhs.__extbuf_ == __rhs.__extbuf_min_) 320 { 321 __extbuf_ = __extbuf_min_; 322 __extbufnext_ = __extbuf_ + (__rhs.__extbufnext_ - __rhs.__extbuf_); 323 __extbufend_ = __extbuf_ + (__rhs.__extbufend_ - __rhs.__extbuf_); 324 } 325 else 326 { 327 __extbuf_ = __rhs.__extbuf_; 328 __extbufnext_ = __rhs.__extbufnext_; 329 __extbufend_ = __rhs.__extbufend_; 330 } 331 __ebs_ = __rhs.__ebs_; 332 __intbuf_ = __rhs.__intbuf_; 333 __ibs_ = __rhs.__ibs_; 334 __file_ = __rhs.__file_; 335 __cv_ = __rhs.__cv_; 336 __st_ = __rhs.__st_; 337 __st_last_ = __rhs.__st_last_; 338 __om_ = __rhs.__om_; 339 __cm_ = __rhs.__cm_; 340 __owns_eb_ = __rhs.__owns_eb_; 341 __owns_ib_ = __rhs.__owns_ib_; 342 __always_noconv_ = __rhs.__always_noconv_; 343 if (__rhs.pbase()) 344 { 345 if (__rhs.pbase() == __rhs.__intbuf_) 346 this->setp(__intbuf_, __intbuf_ + (__rhs. epptr() - __rhs.pbase())); 347 else 348 this->setp((char_type*)__extbuf_, 349 (char_type*)__extbuf_ + (__rhs. epptr() - __rhs.pbase())); 350 this->__pbump(__rhs. pptr() - __rhs.pbase()); 351 } 352 else if (__rhs.eback()) 353 { 354 if (__rhs.eback() == __rhs.__intbuf_) 355 this->setg(__intbuf_, __intbuf_ + (__rhs.gptr() - __rhs.eback()), 356 __intbuf_ + (__rhs.egptr() - __rhs.eback())); 357 else 358 this->setg((char_type*)__extbuf_, 359 (char_type*)__extbuf_ + (__rhs.gptr() - __rhs.eback()), 360 (char_type*)__extbuf_ + (__rhs.egptr() - __rhs.eback())); 361 } 362 __rhs.__extbuf_ = 0; 363 __rhs.__extbufnext_ = 0; 364 __rhs.__extbufend_ = 0; 365 __rhs.__ebs_ = 0; 366 __rhs.__intbuf_ = 0; 367 __rhs.__ibs_ = 0; 368 __rhs.__file_ = 0; 369 __rhs.__st_ = state_type(); 370 __rhs.__st_last_ = state_type(); 371 __rhs.__om_ = 0; 372 __rhs.__cm_ = 0; 373 __rhs.__owns_eb_ = false; 374 __rhs.__owns_ib_ = false; 375 __rhs.setg(0, 0, 0); 376 __rhs.setp(0, 0); 377} 378 379template <class _CharT, class _Traits> 380inline 381basic_filebuf<_CharT, _Traits>& 382basic_filebuf<_CharT, _Traits>::operator=(basic_filebuf&& __rhs) 383{ 384 close(); 385 swap(__rhs); 386 return *this; 387} 388 389#endif // _LIBCPP_CXX03_LANG 390 391template <class _CharT, class _Traits> 392basic_filebuf<_CharT, _Traits>::~basic_filebuf() 393{ 394#ifndef _LIBCPP_NO_EXCEPTIONS 395 try 396 { 397#endif // _LIBCPP_NO_EXCEPTIONS 398 close(); 399#ifndef _LIBCPP_NO_EXCEPTIONS 400 } 401 catch (...) 402 { 403 } 404#endif // _LIBCPP_NO_EXCEPTIONS 405 if (__owns_eb_) 406 delete [] __extbuf_; 407 if (__owns_ib_) 408 delete [] __intbuf_; 409} 410 411template <class _CharT, class _Traits> 412void 413basic_filebuf<_CharT, _Traits>::swap(basic_filebuf& __rhs) 414{ 415 basic_streambuf<char_type, traits_type>::swap(__rhs); 416 if (__extbuf_ != __extbuf_min_ && __rhs.__extbuf_ != __rhs.__extbuf_min_) 417 { 418 _VSTD::swap(__extbuf_, __rhs.__extbuf_); 419 _VSTD::swap(__extbufnext_, __rhs.__extbufnext_); 420 _VSTD::swap(__extbufend_, __rhs.__extbufend_); 421 } 422 else 423 { 424 ptrdiff_t __ln = __extbufnext_ - __extbuf_; 425 ptrdiff_t __le = __extbufend_ - __extbuf_; 426 ptrdiff_t __rn = __rhs.__extbufnext_ - __rhs.__extbuf_; 427 ptrdiff_t __re = __rhs.__extbufend_ - __rhs.__extbuf_; 428 if (__extbuf_ == __extbuf_min_ && __rhs.__extbuf_ != __rhs.__extbuf_min_) 429 { 430 __extbuf_ = __rhs.__extbuf_; 431 __rhs.__extbuf_ = __rhs.__extbuf_min_; 432 } 433 else if (__extbuf_ != __extbuf_min_ && __rhs.__extbuf_ == __rhs.__extbuf_min_) 434 { 435 __rhs.__extbuf_ = __extbuf_; 436 __extbuf_ = __extbuf_min_; 437 } 438 __extbufnext_ = __extbuf_ + __rn; 439 __extbufend_ = __extbuf_ + __re; 440 __rhs.__extbufnext_ = __rhs.__extbuf_ + __ln; 441 __rhs.__extbufend_ = __rhs.__extbuf_ + __le; 442 } 443 _VSTD::swap(__ebs_, __rhs.__ebs_); 444 _VSTD::swap(__intbuf_, __rhs.__intbuf_); 445 _VSTD::swap(__ibs_, __rhs.__ibs_); 446 _VSTD::swap(__file_, __rhs.__file_); 447 _VSTD::swap(__cv_, __rhs.__cv_); 448 _VSTD::swap(__st_, __rhs.__st_); 449 _VSTD::swap(__st_last_, __rhs.__st_last_); 450 _VSTD::swap(__om_, __rhs.__om_); 451 _VSTD::swap(__cm_, __rhs.__cm_); 452 _VSTD::swap(__owns_eb_, __rhs.__owns_eb_); 453 _VSTD::swap(__owns_ib_, __rhs.__owns_ib_); 454 _VSTD::swap(__always_noconv_, __rhs.__always_noconv_); 455 if (this->eback() == (char_type*)__rhs.__extbuf_min_) 456 { 457 ptrdiff_t __n = this->gptr() - this->eback(); 458 ptrdiff_t __e = this->egptr() - this->eback(); 459 this->setg((char_type*)__extbuf_min_, 460 (char_type*)__extbuf_min_ + __n, 461 (char_type*)__extbuf_min_ + __e); 462 } 463 else if (this->pbase() == (char_type*)__rhs.__extbuf_min_) 464 { 465 ptrdiff_t __n = this->pptr() - this->pbase(); 466 ptrdiff_t __e = this->epptr() - this->pbase(); 467 this->setp((char_type*)__extbuf_min_, 468 (char_type*)__extbuf_min_ + __e); 469 this->__pbump(__n); 470 } 471 if (__rhs.eback() == (char_type*)__extbuf_min_) 472 { 473 ptrdiff_t __n = __rhs.gptr() - __rhs.eback(); 474 ptrdiff_t __e = __rhs.egptr() - __rhs.eback(); 475 __rhs.setg((char_type*)__rhs.__extbuf_min_, 476 (char_type*)__rhs.__extbuf_min_ + __n, 477 (char_type*)__rhs.__extbuf_min_ + __e); 478 } 479 else if (__rhs.pbase() == (char_type*)__extbuf_min_) 480 { 481 ptrdiff_t __n = __rhs.pptr() - __rhs.pbase(); 482 ptrdiff_t __e = __rhs.epptr() - __rhs.pbase(); 483 __rhs.setp((char_type*)__rhs.__extbuf_min_, 484 (char_type*)__rhs.__extbuf_min_ + __e); 485 __rhs.__pbump(__n); 486 } 487} 488 489template <class _CharT, class _Traits> 490inline _LIBCPP_INLINE_VISIBILITY 491void 492swap(basic_filebuf<_CharT, _Traits>& __x, basic_filebuf<_CharT, _Traits>& __y) 493{ 494 __x.swap(__y); 495} 496 497template <class _CharT, class _Traits> 498inline 499bool 500basic_filebuf<_CharT, _Traits>::is_open() const 501{ 502 return __file_ != 0; 503} 504 505template <class _CharT, class _Traits> 506const char* basic_filebuf<_CharT, _Traits>::__make_mdstring( 507 ios_base::openmode __mode) _NOEXCEPT { 508 switch (__mode & ~ios_base::ate) { 509 case ios_base::out: 510 case ios_base::out | ios_base::trunc: 511 return "w" _LIBCPP_FOPEN_CLOEXEC_MODE; 512 case ios_base::out | ios_base::app: 513 case ios_base::app: 514 return "a" _LIBCPP_FOPEN_CLOEXEC_MODE; 515 case ios_base::in: 516 return "r" _LIBCPP_FOPEN_CLOEXEC_MODE; 517 case ios_base::in | ios_base::out: 518 return "r+" _LIBCPP_FOPEN_CLOEXEC_MODE; 519 case ios_base::in | ios_base::out | ios_base::trunc: 520 return "w+" _LIBCPP_FOPEN_CLOEXEC_MODE; 521 case ios_base::in | ios_base::out | ios_base::app: 522 case ios_base::in | ios_base::app: 523 return "a+" _LIBCPP_FOPEN_CLOEXEC_MODE; 524 case ios_base::out | ios_base::binary: 525 case ios_base::out | ios_base::trunc | ios_base::binary: 526 return "wb" _LIBCPP_FOPEN_CLOEXEC_MODE; 527 case ios_base::out | ios_base::app | ios_base::binary: 528 case ios_base::app | ios_base::binary: 529 return "ab" _LIBCPP_FOPEN_CLOEXEC_MODE; 530 case ios_base::in | ios_base::binary: 531 return "rb" _LIBCPP_FOPEN_CLOEXEC_MODE; 532 case ios_base::in | ios_base::out | ios_base::binary: 533 return "r+b" _LIBCPP_FOPEN_CLOEXEC_MODE; 534 case ios_base::in | ios_base::out | ios_base::trunc | ios_base::binary: 535 return "w+b" _LIBCPP_FOPEN_CLOEXEC_MODE; 536 case ios_base::in | ios_base::out | ios_base::app | ios_base::binary: 537 case ios_base::in | ios_base::app | ios_base::binary: 538 return "a+b" _LIBCPP_FOPEN_CLOEXEC_MODE; 539 default: 540 return nullptr; 541 } 542 _LIBCPP_UNREACHABLE(); 543} 544 545#ifndef _LIBCPP_HAS_NO_GLOBAL_FILESYSTEM_NAMESPACE 546template <class _CharT, class _Traits> 547basic_filebuf<_CharT, _Traits>* 548basic_filebuf<_CharT, _Traits>::open(const char* __s, ios_base::openmode __mode) 549{ 550 basic_filebuf<_CharT, _Traits>* __rt = 0; 551 if (__file_ == 0) 552 { 553 if (const char* __mdstr = __make_mdstring(__mode)) { 554 __rt = this; 555 __file_ = fopen(__s, __mdstr); 556 if (__file_) { 557 __om_ = __mode; 558 if (__mode & ios_base::ate) { 559 if (fseek(__file_, 0, SEEK_END)) { 560 fclose(__file_); 561 __file_ = 0; 562 __rt = 0; 563 } 564 } 565 } else 566 __rt = 0; 567 } 568 } 569 return __rt; 570} 571 572template <class _CharT, class _Traits> 573_LIBCPP_INLINE_VISIBILITY basic_filebuf<_CharT, _Traits>* 574basic_filebuf<_CharT, _Traits>::__open(int __fd, ios_base::openmode __mode) { 575 basic_filebuf<_CharT, _Traits>* __rt = 0; 576 if (__file_ == 0) { 577 if (const char* __mdstr = __make_mdstring(__mode)) { 578 __rt = this; 579 __file_ = fdopen(__fd, __mdstr); 580 if (__file_) { 581 __om_ = __mode; 582 if (__mode & ios_base::ate) { 583 if (fseek(__file_, 0, SEEK_END)) { 584 fclose(__file_); 585 __file_ = 0; 586 __rt = 0; 587 } 588 } 589 } else 590 __rt = 0; 591 } 592 } 593 return __rt; 594} 595 596#ifdef _LIBCPP_HAS_OPEN_WITH_WCHAR 597// This is basically the same as the char* overload except that it uses _wfopen 598// and long mode strings. 599template <class _CharT, class _Traits> 600basic_filebuf<_CharT, _Traits>* 601basic_filebuf<_CharT, _Traits>::open(const wchar_t* __s, ios_base::openmode __mode) 602{ 603 basic_filebuf<_CharT, _Traits>* __rt = 0; 604 if (__file_ == 0) 605 { 606 __rt = this; 607 const wchar_t* __mdstr; 608 switch (__mode & ~ios_base::ate) 609 { 610 case ios_base::out: 611 case ios_base::out | ios_base::trunc: 612 __mdstr = L"w"; 613 break; 614 case ios_base::out | ios_base::app: 615 case ios_base::app: 616 __mdstr = L"a"; 617 break; 618 case ios_base::in: 619 __mdstr = L"r"; 620 break; 621 case ios_base::in | ios_base::out: 622 __mdstr = L"r+"; 623 break; 624 case ios_base::in | ios_base::out | ios_base::trunc: 625 __mdstr = L"w+"; 626 break; 627 case ios_base::in | ios_base::out | ios_base::app: 628 case ios_base::in | ios_base::app: 629 __mdstr = L"a+"; 630 break; 631 case ios_base::out | ios_base::binary: 632 case ios_base::out | ios_base::trunc | ios_base::binary: 633 __mdstr = L"wb"; 634 break; 635 case ios_base::out | ios_base::app | ios_base::binary: 636 case ios_base::app | ios_base::binary: 637 __mdstr = L"ab"; 638 break; 639 case ios_base::in | ios_base::binary: 640 __mdstr = L"rb"; 641 break; 642 case ios_base::in | ios_base::out | ios_base::binary: 643 __mdstr = L"r+b"; 644 break; 645 case ios_base::in | ios_base::out | ios_base::trunc | ios_base::binary: 646 __mdstr = L"w+b"; 647 break; 648 case ios_base::in | ios_base::out | ios_base::app | ios_base::binary: 649 case ios_base::in | ios_base::app | ios_base::binary: 650 __mdstr = L"a+b"; 651 break; 652 default: 653 __rt = 0; 654 break; 655 } 656 if (__rt) 657 { 658 __file_ = _wfopen(__s, __mdstr); 659 if (__file_) 660 { 661 __om_ = __mode; 662 if (__mode & ios_base::ate) 663 { 664 if (fseek(__file_, 0, SEEK_END)) 665 { 666 fclose(__file_); 667 __file_ = 0; 668 __rt = 0; 669 } 670 } 671 } 672 else 673 __rt = 0; 674 } 675 } 676 return __rt; 677} 678#endif 679 680template <class _CharT, class _Traits> 681inline 682basic_filebuf<_CharT, _Traits>* 683basic_filebuf<_CharT, _Traits>::open(const string& __s, ios_base::openmode __mode) 684{ 685 return open(__s.c_str(), __mode); 686} 687#endif 688 689template <class _CharT, class _Traits> 690basic_filebuf<_CharT, _Traits>* 691basic_filebuf<_CharT, _Traits>::close() 692{ 693 basic_filebuf<_CharT, _Traits>* __rt = 0; 694 if (__file_) 695 { 696 __rt = this; 697 unique_ptr<FILE, int(*)(FILE*)> __h(__file_, fclose); 698 if (sync()) 699 __rt = 0; 700 if (fclose(__h.release())) 701 __rt = 0; 702 __file_ = 0; 703 setbuf(0, 0); 704 } 705 return __rt; 706} 707 708template <class _CharT, class _Traits> 709typename basic_filebuf<_CharT, _Traits>::int_type 710basic_filebuf<_CharT, _Traits>::underflow() 711{ 712 if (__file_ == 0) 713 return traits_type::eof(); 714 bool __initial = __read_mode(); 715 char_type __1buf; 716 if (this->gptr() == 0) 717 this->setg(&__1buf, &__1buf+1, &__1buf+1); 718 const size_t __unget_sz = __initial ? 0 : min<size_t>((this->egptr() - this->eback()) / 2, 4); 719 int_type __c = traits_type::eof(); 720 if (this->gptr() == this->egptr()) 721 { 722 memmove(this->eback(), this->egptr() - __unget_sz, __unget_sz * sizeof(char_type)); 723 if (__always_noconv_) 724 { 725 size_t __nmemb = static_cast<size_t>(this->egptr() - this->eback() - __unget_sz); 726 __nmemb = fread(this->eback() + __unget_sz, 1, __nmemb, __file_); 727 if (__nmemb != 0) 728 { 729 this->setg(this->eback(), 730 this->eback() + __unget_sz, 731 this->eback() + __unget_sz + __nmemb); 732 __c = traits_type::to_int_type(*this->gptr()); 733 } 734 } 735 else 736 { 737 _LIBCPP_ASSERT ( !(__extbufnext_ == NULL && (__extbufend_ != __extbufnext_)), "underflow moving from NULL" ); 738 if (__extbufend_ != __extbufnext_) 739 memmove(__extbuf_, __extbufnext_, __extbufend_ - __extbufnext_); 740 __extbufnext_ = __extbuf_ + (__extbufend_ - __extbufnext_); 741 __extbufend_ = __extbuf_ + (__extbuf_ == __extbuf_min_ ? sizeof(__extbuf_min_) : __ebs_); 742 size_t __nmemb = _VSTD::min(static_cast<size_t>(__ibs_ - __unget_sz), 743 static_cast<size_t>(__extbufend_ - __extbufnext_)); 744 codecvt_base::result __r; 745 __st_last_ = __st_; 746 size_t __nr = fread((void*) const_cast<char *>(__extbufnext_), 1, __nmemb, __file_); 747 if (__nr != 0) 748 { 749 if (!__cv_) 750 __throw_bad_cast(); 751 752 __extbufend_ = __extbufnext_ + __nr; 753 char_type* __inext; 754 __r = __cv_->in(__st_, __extbuf_, __extbufend_, __extbufnext_, 755 this->eback() + __unget_sz, 756 this->eback() + __ibs_, __inext); 757 if (__r == codecvt_base::noconv) 758 { 759 this->setg((char_type*)__extbuf_, (char_type*)__extbuf_, 760 (char_type*)const_cast<char *>(__extbufend_)); 761 __c = traits_type::to_int_type(*this->gptr()); 762 } 763 else if (__inext != this->eback() + __unget_sz) 764 { 765 this->setg(this->eback(), this->eback() + __unget_sz, __inext); 766 __c = traits_type::to_int_type(*this->gptr()); 767 } 768 } 769 } 770 } 771 else 772 __c = traits_type::to_int_type(*this->gptr()); 773 if (this->eback() == &__1buf) 774 this->setg(0, 0, 0); 775 return __c; 776} 777 778template <class _CharT, class _Traits> 779typename basic_filebuf<_CharT, _Traits>::int_type 780basic_filebuf<_CharT, _Traits>::pbackfail(int_type __c) 781{ 782 if (__file_ && this->eback() < this->gptr()) 783 { 784 if (traits_type::eq_int_type(__c, traits_type::eof())) 785 { 786 this->gbump(-1); 787 return traits_type::not_eof(__c); 788 } 789 if ((__om_ & ios_base::out) || 790 traits_type::eq(traits_type::to_char_type(__c), this->gptr()[-1])) 791 { 792 this->gbump(-1); 793 *this->gptr() = traits_type::to_char_type(__c); 794 return __c; 795 } 796 } 797 return traits_type::eof(); 798} 799 800template <class _CharT, class _Traits> 801typename basic_filebuf<_CharT, _Traits>::int_type 802basic_filebuf<_CharT, _Traits>::overflow(int_type __c) 803{ 804 if (__file_ == 0) 805 return traits_type::eof(); 806 __write_mode(); 807 char_type __1buf; 808 char_type* __pb_save = this->pbase(); 809 char_type* __epb_save = this->epptr(); 810 if (!traits_type::eq_int_type(__c, traits_type::eof())) 811 { 812 if (this->pptr() == 0) 813 this->setp(&__1buf, &__1buf+1); 814 *this->pptr() = traits_type::to_char_type(__c); 815 this->pbump(1); 816 } 817 if (this->pptr() != this->pbase()) 818 { 819 if (__always_noconv_) 820 { 821 size_t __nmemb = static_cast<size_t>(this->pptr() - this->pbase()); 822 if (fwrite(this->pbase(), sizeof(char_type), __nmemb, __file_) != __nmemb) 823 return traits_type::eof(); 824 } 825 else 826 { 827 char* __extbe = __extbuf_; 828 codecvt_base::result __r; 829 do 830 { 831 if (!__cv_) 832 __throw_bad_cast(); 833 834 const char_type* __e; 835 __r = __cv_->out(__st_, this->pbase(), this->pptr(), __e, 836 __extbuf_, __extbuf_ + __ebs_, __extbe); 837 if (__e == this->pbase()) 838 return traits_type::eof(); 839 if (__r == codecvt_base::noconv) 840 { 841 size_t __nmemb = static_cast<size_t>(this->pptr() - this->pbase()); 842 if (fwrite(this->pbase(), 1, __nmemb, __file_) != __nmemb) 843 return traits_type::eof(); 844 } 845 else if (__r == codecvt_base::ok || __r == codecvt_base::partial) 846 { 847 size_t __nmemb = static_cast<size_t>(__extbe - __extbuf_); 848 if (fwrite(__extbuf_, 1, __nmemb, __file_) != __nmemb) 849 return traits_type::eof(); 850 if (__r == codecvt_base::partial) 851 { 852 this->setp(const_cast<char_type*>(__e), this->pptr()); 853 this->__pbump(this->epptr() - this->pbase()); 854 } 855 } 856 else 857 return traits_type::eof(); 858 } while (__r == codecvt_base::partial); 859 } 860 this->setp(__pb_save, __epb_save); 861 } 862 return traits_type::not_eof(__c); 863} 864 865template <class _CharT, class _Traits> 866basic_streambuf<_CharT, _Traits>* 867basic_filebuf<_CharT, _Traits>::setbuf(char_type* __s, streamsize __n) 868{ 869 this->setg(0, 0, 0); 870 this->setp(0, 0); 871 if (__owns_eb_) 872 delete [] __extbuf_; 873 if (__owns_ib_) 874 delete [] __intbuf_; 875 __ebs_ = __n; 876 if (__ebs_ > sizeof(__extbuf_min_)) 877 { 878 if (__always_noconv_ && __s) 879 { 880 __extbuf_ = (char*)__s; 881 __owns_eb_ = false; 882 } 883 else 884 { 885 __extbuf_ = new char[__ebs_]; 886 __owns_eb_ = true; 887 } 888 } 889 else 890 { 891 __extbuf_ = __extbuf_min_; 892 __ebs_ = sizeof(__extbuf_min_); 893 __owns_eb_ = false; 894 } 895 if (!__always_noconv_) 896 { 897 __ibs_ = max<streamsize>(__n, sizeof(__extbuf_min_)); 898 if (__s && __ibs_ >= sizeof(__extbuf_min_)) 899 { 900 __intbuf_ = __s; 901 __owns_ib_ = false; 902 } 903 else 904 { 905 __intbuf_ = new char_type[__ibs_]; 906 __owns_ib_ = true; 907 } 908 } 909 else 910 { 911 __ibs_ = 0; 912 __intbuf_ = 0; 913 __owns_ib_ = false; 914 } 915 return this; 916} 917 918template <class _CharT, class _Traits> 919typename basic_filebuf<_CharT, _Traits>::pos_type 920basic_filebuf<_CharT, _Traits>::seekoff(off_type __off, ios_base::seekdir __way, 921 ios_base::openmode) 922{ 923 if (!__cv_) 924 __throw_bad_cast(); 925 926 int __width = __cv_->encoding(); 927 if (__file_ == 0 || (__width <= 0 && __off != 0) || sync()) 928 return pos_type(off_type(-1)); 929 // __width > 0 || __off == 0 930 int __whence; 931 switch (__way) 932 { 933 case ios_base::beg: 934 __whence = SEEK_SET; 935 break; 936 case ios_base::cur: 937 __whence = SEEK_CUR; 938 break; 939 case ios_base::end: 940 __whence = SEEK_END; 941 break; 942 default: 943 return pos_type(off_type(-1)); 944 } 945#if defined(_LIBCPP_HAS_NO_OFF_T_FUNCTIONS) 946 if (fseek(__file_, __width > 0 ? __width * __off : 0, __whence)) 947 return pos_type(off_type(-1)); 948 pos_type __r = ftell(__file_); 949#else 950 if (fseeko(__file_, __width > 0 ? __width * __off : 0, __whence)) 951 return pos_type(off_type(-1)); 952 pos_type __r = ftello(__file_); 953#endif 954 __r.state(__st_); 955 return __r; 956} 957 958template <class _CharT, class _Traits> 959typename basic_filebuf<_CharT, _Traits>::pos_type 960basic_filebuf<_CharT, _Traits>::seekpos(pos_type __sp, ios_base::openmode) 961{ 962 if (__file_ == 0 || sync()) 963 return pos_type(off_type(-1)); 964#if defined(_LIBCPP_HAS_NO_OFF_T_FUNCTIONS) 965 if (fseek(__file_, __sp, SEEK_SET)) 966 return pos_type(off_type(-1)); 967#else 968 if (fseeko(__file_, __sp, SEEK_SET)) 969 return pos_type(off_type(-1)); 970#endif 971 __st_ = __sp.state(); 972 return __sp; 973} 974 975template <class _CharT, class _Traits> 976int 977basic_filebuf<_CharT, _Traits>::sync() 978{ 979 if (__file_ == 0) 980 return 0; 981 if (!__cv_) 982 __throw_bad_cast(); 983 984 if (__cm_ & ios_base::out) 985 { 986 if (this->pptr() != this->pbase()) 987 if (overflow() == traits_type::eof()) 988 return -1; 989 codecvt_base::result __r; 990 do 991 { 992 char* __extbe; 993 __r = __cv_->unshift(__st_, __extbuf_, __extbuf_ + __ebs_, __extbe); 994 size_t __nmemb = static_cast<size_t>(__extbe - __extbuf_); 995 if (fwrite(__extbuf_, 1, __nmemb, __file_) != __nmemb) 996 return -1; 997 } while (__r == codecvt_base::partial); 998 if (__r == codecvt_base::error) 999 return -1; 1000 if (fflush(__file_)) 1001 return -1; 1002 } 1003 else if (__cm_ & ios_base::in) 1004 { 1005 off_type __c; 1006 state_type __state = __st_last_; 1007 bool __update_st = false; 1008 if (__always_noconv_) 1009 __c = this->egptr() - this->gptr(); 1010 else 1011 { 1012 int __width = __cv_->encoding(); 1013 __c = __extbufend_ - __extbufnext_; 1014 if (__width > 0) 1015 __c += __width * (this->egptr() - this->gptr()); 1016 else 1017 { 1018 if (this->gptr() != this->egptr()) 1019 { 1020 const int __off = __cv_->length(__state, __extbuf_, 1021 __extbufnext_, 1022 this->gptr() - this->eback()); 1023 __c += __extbufnext_ - __extbuf_ - __off; 1024 __update_st = true; 1025 } 1026 } 1027 } 1028#if defined(_LIBCPP_HAS_NO_OFF_T_FUNCTIONS) 1029 if (fseek(__file_, -__c, SEEK_CUR)) 1030 return -1; 1031#else 1032 if (fseeko(__file_, -__c, SEEK_CUR)) 1033 return -1; 1034#endif 1035 if (__update_st) 1036 __st_ = __state; 1037 __extbufnext_ = __extbufend_ = __extbuf_; 1038 this->setg(0, 0, 0); 1039 __cm_ = 0; 1040 } 1041 return 0; 1042} 1043 1044template <class _CharT, class _Traits> 1045void 1046basic_filebuf<_CharT, _Traits>::imbue(const locale& __loc) 1047{ 1048 sync(); 1049 __cv_ = &use_facet<codecvt<char_type, char, state_type> >(__loc); 1050 bool __old_anc = __always_noconv_; 1051 __always_noconv_ = __cv_->always_noconv(); 1052 if (__old_anc != __always_noconv_) 1053 { 1054 this->setg(0, 0, 0); 1055 this->setp(0, 0); 1056 // invariant, char_type is char, else we couldn't get here 1057 if (__always_noconv_) // need to dump __intbuf_ 1058 { 1059 if (__owns_eb_) 1060 delete [] __extbuf_; 1061 __owns_eb_ = __owns_ib_; 1062 __ebs_ = __ibs_; 1063 __extbuf_ = (char*)__intbuf_; 1064 __ibs_ = 0; 1065 __intbuf_ = 0; 1066 __owns_ib_ = false; 1067 } 1068 else // need to obtain an __intbuf_. 1069 { // If __extbuf_ is user-supplied, use it, else new __intbuf_ 1070 if (!__owns_eb_ && __extbuf_ != __extbuf_min_) 1071 { 1072 __ibs_ = __ebs_; 1073 __intbuf_ = (char_type*)__extbuf_; 1074 __owns_ib_ = false; 1075 __extbuf_ = new char[__ebs_]; 1076 __owns_eb_ = true; 1077 } 1078 else 1079 { 1080 __ibs_ = __ebs_; 1081 __intbuf_ = new char_type[__ibs_]; 1082 __owns_ib_ = true; 1083 } 1084 } 1085 } 1086} 1087 1088template <class _CharT, class _Traits> 1089bool 1090basic_filebuf<_CharT, _Traits>::__read_mode() 1091{ 1092 if (!(__cm_ & ios_base::in)) 1093 { 1094 this->setp(0, 0); 1095 if (__always_noconv_) 1096 this->setg((char_type*)__extbuf_, 1097 (char_type*)__extbuf_ + __ebs_, 1098 (char_type*)__extbuf_ + __ebs_); 1099 else 1100 this->setg(__intbuf_, __intbuf_ + __ibs_, __intbuf_ + __ibs_); 1101 __cm_ = ios_base::in; 1102 return true; 1103 } 1104 return false; 1105} 1106 1107template <class _CharT, class _Traits> 1108void 1109basic_filebuf<_CharT, _Traits>::__write_mode() 1110{ 1111 if (!(__cm_ & ios_base::out)) 1112 { 1113 this->setg(0, 0, 0); 1114 if (__ebs_ > sizeof(__extbuf_min_)) 1115 { 1116 if (__always_noconv_) 1117 this->setp((char_type*)__extbuf_, 1118 (char_type*)__extbuf_ + (__ebs_ - 1)); 1119 else 1120 this->setp(__intbuf_, __intbuf_ + (__ibs_ - 1)); 1121 } 1122 else 1123 this->setp(0, 0); 1124 __cm_ = ios_base::out; 1125 } 1126} 1127 1128// basic_ifstream 1129 1130template <class _CharT, class _Traits> 1131class _LIBCPP_TEMPLATE_VIS basic_ifstream 1132 : public basic_istream<_CharT, _Traits> 1133{ 1134public: 1135 typedef _CharT char_type; 1136 typedef _Traits traits_type; 1137 typedef typename traits_type::int_type int_type; 1138 typedef typename traits_type::pos_type pos_type; 1139 typedef typename traits_type::off_type off_type; 1140 1141 _LIBCPP_INLINE_VISIBILITY 1142 basic_ifstream(); 1143#ifndef _LIBCPP_HAS_NO_GLOBAL_FILESYSTEM_NAMESPACE 1144 _LIBCPP_INLINE_VISIBILITY 1145 explicit basic_ifstream(const char* __s, ios_base::openmode __mode = ios_base::in); 1146#ifdef _LIBCPP_HAS_OPEN_WITH_WCHAR 1147 _LIBCPP_INLINE_VISIBILITY 1148 explicit basic_ifstream(const wchar_t* __s, ios_base::openmode __mode = ios_base::in); 1149#endif 1150 _LIBCPP_INLINE_VISIBILITY 1151 explicit basic_ifstream(const string& __s, ios_base::openmode __mode = ios_base::in); 1152#if _LIBCPP_STD_VER >= 17 1153 _LIBCPP_AVAILABILITY_FILESYSTEM _LIBCPP_INLINE_VISIBILITY 1154 explicit basic_ifstream(const filesystem::path& __p, ios_base::openmode __mode = ios_base::in) 1155 : basic_ifstream(__p.c_str(), __mode) {} 1156#endif // _LIBCPP_STD_VER >= 17 1157#endif 1158#ifndef _LIBCPP_CXX03_LANG 1159 _LIBCPP_INLINE_VISIBILITY 1160 basic_ifstream(basic_ifstream&& __rhs); 1161 1162 _LIBCPP_INLINE_VISIBILITY 1163 basic_ifstream& operator=(basic_ifstream&& __rhs); 1164#endif 1165 _LIBCPP_INLINE_VISIBILITY 1166 void swap(basic_ifstream& __rhs); 1167 1168 _LIBCPP_INLINE_VISIBILITY 1169 basic_filebuf<char_type, traits_type>* rdbuf() const; 1170 _LIBCPP_INLINE_VISIBILITY 1171 bool is_open() const; 1172#ifndef _LIBCPP_HAS_NO_GLOBAL_FILESYSTEM_NAMESPACE 1173 void open(const char* __s, ios_base::openmode __mode = ios_base::in); 1174#ifdef _LIBCPP_HAS_OPEN_WITH_WCHAR 1175 void open(const wchar_t* __s, ios_base::openmode __mode = ios_base::in); 1176#endif 1177 void open(const string& __s, ios_base::openmode __mode = ios_base::in); 1178#if _LIBCPP_STD_VER >= 17 1179 _LIBCPP_AVAILABILITY_FILESYSTEM _LIBCPP_INLINE_VISIBILITY 1180 void open(const filesystem::path& __p, 1181 ios_base::openmode __mode = ios_base::in) { 1182 return open(__p.c_str(), __mode); 1183 } 1184#endif // _LIBCPP_STD_VER >= 17 1185 1186 _LIBCPP_INLINE_VISIBILITY 1187 void __open(int __fd, ios_base::openmode __mode); 1188#endif 1189 _LIBCPP_INLINE_VISIBILITY 1190 void close(); 1191 1192private: 1193 basic_filebuf<char_type, traits_type> __sb_; 1194}; 1195 1196template <class _CharT, class _Traits> 1197inline 1198basic_ifstream<_CharT, _Traits>::basic_ifstream() 1199 : basic_istream<char_type, traits_type>(&__sb_) 1200{ 1201} 1202 1203#ifndef _LIBCPP_HAS_NO_GLOBAL_FILESYSTEM_NAMESPACE 1204template <class _CharT, class _Traits> 1205inline 1206basic_ifstream<_CharT, _Traits>::basic_ifstream(const char* __s, ios_base::openmode __mode) 1207 : basic_istream<char_type, traits_type>(&__sb_) 1208{ 1209 if (__sb_.open(__s, __mode | ios_base::in) == 0) 1210 this->setstate(ios_base::failbit); 1211} 1212 1213#ifdef _LIBCPP_HAS_OPEN_WITH_WCHAR 1214template <class _CharT, class _Traits> 1215inline 1216basic_ifstream<_CharT, _Traits>::basic_ifstream(const wchar_t* __s, ios_base::openmode __mode) 1217 : basic_istream<char_type, traits_type>(&__sb_) 1218{ 1219 if (__sb_.open(__s, __mode | ios_base::in) == 0) 1220 this->setstate(ios_base::failbit); 1221} 1222#endif 1223 1224template <class _CharT, class _Traits> 1225inline 1226basic_ifstream<_CharT, _Traits>::basic_ifstream(const string& __s, ios_base::openmode __mode) 1227 : basic_istream<char_type, traits_type>(&__sb_) 1228{ 1229 if (__sb_.open(__s, __mode | ios_base::in) == 0) 1230 this->setstate(ios_base::failbit); 1231} 1232#endif 1233 1234#ifndef _LIBCPP_CXX03_LANG 1235 1236template <class _CharT, class _Traits> 1237inline 1238basic_ifstream<_CharT, _Traits>::basic_ifstream(basic_ifstream&& __rhs) 1239 : basic_istream<char_type, traits_type>(_VSTD::move(__rhs)), 1240 __sb_(_VSTD::move(__rhs.__sb_)) 1241{ 1242 this->set_rdbuf(&__sb_); 1243} 1244 1245template <class _CharT, class _Traits> 1246inline 1247basic_ifstream<_CharT, _Traits>& 1248basic_ifstream<_CharT, _Traits>::operator=(basic_ifstream&& __rhs) 1249{ 1250 basic_istream<char_type, traits_type>::operator=(_VSTD::move(__rhs)); 1251 __sb_ = _VSTD::move(__rhs.__sb_); 1252 return *this; 1253} 1254 1255#endif // _LIBCPP_CXX03_LANG 1256 1257template <class _CharT, class _Traits> 1258inline 1259void 1260basic_ifstream<_CharT, _Traits>::swap(basic_ifstream& __rhs) 1261{ 1262 basic_istream<char_type, traits_type>::swap(__rhs); 1263 __sb_.swap(__rhs.__sb_); 1264} 1265 1266template <class _CharT, class _Traits> 1267inline _LIBCPP_INLINE_VISIBILITY 1268void 1269swap(basic_ifstream<_CharT, _Traits>& __x, basic_ifstream<_CharT, _Traits>& __y) 1270{ 1271 __x.swap(__y); 1272} 1273 1274template <class _CharT, class _Traits> 1275inline 1276basic_filebuf<_CharT, _Traits>* 1277basic_ifstream<_CharT, _Traits>::rdbuf() const 1278{ 1279 return const_cast<basic_filebuf<char_type, traits_type>*>(&__sb_); 1280} 1281 1282template <class _CharT, class _Traits> 1283inline 1284bool 1285basic_ifstream<_CharT, _Traits>::is_open() const 1286{ 1287 return __sb_.is_open(); 1288} 1289 1290#ifndef _LIBCPP_HAS_NO_GLOBAL_FILESYSTEM_NAMESPACE 1291template <class _CharT, class _Traits> 1292void 1293basic_ifstream<_CharT, _Traits>::open(const char* __s, ios_base::openmode __mode) 1294{ 1295 if (__sb_.open(__s, __mode | ios_base::in)) 1296 this->clear(); 1297 else 1298 this->setstate(ios_base::failbit); 1299} 1300 1301#ifdef _LIBCPP_HAS_OPEN_WITH_WCHAR 1302template <class _CharT, class _Traits> 1303void 1304basic_ifstream<_CharT, _Traits>::open(const wchar_t* __s, ios_base::openmode __mode) 1305{ 1306 if (__sb_.open(__s, __mode | ios_base::in)) 1307 this->clear(); 1308 else 1309 this->setstate(ios_base::failbit); 1310} 1311#endif 1312 1313template <class _CharT, class _Traits> 1314void 1315basic_ifstream<_CharT, _Traits>::open(const string& __s, ios_base::openmode __mode) 1316{ 1317 if (__sb_.open(__s, __mode | ios_base::in)) 1318 this->clear(); 1319 else 1320 this->setstate(ios_base::failbit); 1321} 1322 1323template <class _CharT, class _Traits> 1324void basic_ifstream<_CharT, _Traits>::__open(int __fd, 1325 ios_base::openmode __mode) { 1326 if (__sb_.__open(__fd, __mode | ios_base::in)) 1327 this->clear(); 1328 else 1329 this->setstate(ios_base::failbit); 1330} 1331#endif 1332 1333template <class _CharT, class _Traits> 1334inline 1335void 1336basic_ifstream<_CharT, _Traits>::close() 1337{ 1338 if (__sb_.close() == 0) 1339 this->setstate(ios_base::failbit); 1340} 1341 1342// basic_ofstream 1343 1344template <class _CharT, class _Traits> 1345class _LIBCPP_TEMPLATE_VIS basic_ofstream 1346 : public basic_ostream<_CharT, _Traits> 1347{ 1348public: 1349 typedef _CharT char_type; 1350 typedef _Traits traits_type; 1351 typedef typename traits_type::int_type int_type; 1352 typedef typename traits_type::pos_type pos_type; 1353 typedef typename traits_type::off_type off_type; 1354 1355 _LIBCPP_INLINE_VISIBILITY 1356 basic_ofstream(); 1357 _LIBCPP_INLINE_VISIBILITY 1358 explicit basic_ofstream(const char* __s, ios_base::openmode __mode = ios_base::out); 1359#ifdef _LIBCPP_HAS_OPEN_WITH_WCHAR 1360 _LIBCPP_INLINE_VISIBILITY 1361 explicit basic_ofstream(const wchar_t* __s, ios_base::openmode __mode = ios_base::out); 1362#endif 1363 _LIBCPP_INLINE_VISIBILITY 1364 explicit basic_ofstream(const string& __s, ios_base::openmode __mode = ios_base::out); 1365 1366#if _LIBCPP_STD_VER >= 17 1367 _LIBCPP_AVAILABILITY_FILESYSTEM _LIBCPP_INLINE_VISIBILITY 1368 explicit basic_ofstream(const filesystem::path& __p, ios_base::openmode __mode = ios_base::out) 1369 : basic_ofstream(__p.c_str(), __mode) {} 1370#endif // _LIBCPP_STD_VER >= 17 1371 1372#ifndef _LIBCPP_CXX03_LANG 1373 _LIBCPP_INLINE_VISIBILITY 1374 basic_ofstream(basic_ofstream&& __rhs); 1375 1376 _LIBCPP_INLINE_VISIBILITY 1377 basic_ofstream& operator=(basic_ofstream&& __rhs); 1378#endif 1379 _LIBCPP_INLINE_VISIBILITY 1380 void swap(basic_ofstream& __rhs); 1381 1382 _LIBCPP_INLINE_VISIBILITY 1383 basic_filebuf<char_type, traits_type>* rdbuf() const; 1384 _LIBCPP_INLINE_VISIBILITY 1385 bool is_open() const; 1386#ifndef _LIBCPP_HAS_NO_GLOBAL_FILESYSTEM_NAMESPACE 1387 void open(const char* __s, ios_base::openmode __mode = ios_base::out); 1388#ifdef _LIBCPP_HAS_OPEN_WITH_WCHAR 1389 void open(const wchar_t* __s, ios_base::openmode __mode = ios_base::out); 1390#endif 1391 void open(const string& __s, ios_base::openmode __mode = ios_base::out); 1392 1393#if _LIBCPP_STD_VER >= 17 1394 _LIBCPP_AVAILABILITY_FILESYSTEM _LIBCPP_INLINE_VISIBILITY 1395 void open(const filesystem::path& __p, ios_base::openmode __mode = ios_base::out) 1396 { return open(__p.c_str(), __mode); } 1397#endif // _LIBCPP_STD_VER >= 17 1398 1399 _LIBCPP_INLINE_VISIBILITY 1400 void __open(int __fd, ios_base::openmode __mode); 1401#endif 1402 _LIBCPP_INLINE_VISIBILITY 1403 void close(); 1404 1405private: 1406 basic_filebuf<char_type, traits_type> __sb_; 1407}; 1408 1409template <class _CharT, class _Traits> 1410inline 1411basic_ofstream<_CharT, _Traits>::basic_ofstream() 1412 : basic_ostream<char_type, traits_type>(&__sb_) 1413{ 1414} 1415 1416#ifndef _LIBCPP_HAS_NO_GLOBAL_FILESYSTEM_NAMESPACE 1417template <class _CharT, class _Traits> 1418inline 1419basic_ofstream<_CharT, _Traits>::basic_ofstream(const char* __s, ios_base::openmode __mode) 1420 : basic_ostream<char_type, traits_type>(&__sb_) 1421{ 1422 if (__sb_.open(__s, __mode | ios_base::out) == 0) 1423 this->setstate(ios_base::failbit); 1424} 1425 1426#ifdef _LIBCPP_HAS_OPEN_WITH_WCHAR 1427template <class _CharT, class _Traits> 1428inline 1429basic_ofstream<_CharT, _Traits>::basic_ofstream(const wchar_t* __s, ios_base::openmode __mode) 1430 : basic_ostream<char_type, traits_type>(&__sb_) 1431{ 1432 if (__sb_.open(__s, __mode | ios_base::out) == 0) 1433 this->setstate(ios_base::failbit); 1434} 1435#endif 1436 1437template <class _CharT, class _Traits> 1438inline 1439basic_ofstream<_CharT, _Traits>::basic_ofstream(const string& __s, ios_base::openmode __mode) 1440 : basic_ostream<char_type, traits_type>(&__sb_) 1441{ 1442 if (__sb_.open(__s, __mode | ios_base::out) == 0) 1443 this->setstate(ios_base::failbit); 1444} 1445#endif 1446 1447#ifndef _LIBCPP_CXX03_LANG 1448 1449template <class _CharT, class _Traits> 1450inline 1451basic_ofstream<_CharT, _Traits>::basic_ofstream(basic_ofstream&& __rhs) 1452 : basic_ostream<char_type, traits_type>(_VSTD::move(__rhs)), 1453 __sb_(_VSTD::move(__rhs.__sb_)) 1454{ 1455 this->set_rdbuf(&__sb_); 1456} 1457 1458template <class _CharT, class _Traits> 1459inline 1460basic_ofstream<_CharT, _Traits>& 1461basic_ofstream<_CharT, _Traits>::operator=(basic_ofstream&& __rhs) 1462{ 1463 basic_ostream<char_type, traits_type>::operator=(_VSTD::move(__rhs)); 1464 __sb_ = _VSTD::move(__rhs.__sb_); 1465 return *this; 1466} 1467 1468#endif // _LIBCPP_CXX03_LANG 1469 1470template <class _CharT, class _Traits> 1471inline 1472void 1473basic_ofstream<_CharT, _Traits>::swap(basic_ofstream& __rhs) 1474{ 1475 basic_ostream<char_type, traits_type>::swap(__rhs); 1476 __sb_.swap(__rhs.__sb_); 1477} 1478 1479template <class _CharT, class _Traits> 1480inline _LIBCPP_INLINE_VISIBILITY 1481void 1482swap(basic_ofstream<_CharT, _Traits>& __x, basic_ofstream<_CharT, _Traits>& __y) 1483{ 1484 __x.swap(__y); 1485} 1486 1487template <class _CharT, class _Traits> 1488inline 1489basic_filebuf<_CharT, _Traits>* 1490basic_ofstream<_CharT, _Traits>::rdbuf() const 1491{ 1492 return const_cast<basic_filebuf<char_type, traits_type>*>(&__sb_); 1493} 1494 1495template <class _CharT, class _Traits> 1496inline 1497bool 1498basic_ofstream<_CharT, _Traits>::is_open() const 1499{ 1500 return __sb_.is_open(); 1501} 1502 1503#ifndef _LIBCPP_HAS_NO_GLOBAL_FILESYSTEM_NAMESPACE 1504template <class _CharT, class _Traits> 1505void 1506basic_ofstream<_CharT, _Traits>::open(const char* __s, ios_base::openmode __mode) 1507{ 1508 if (__sb_.open(__s, __mode | ios_base::out)) 1509 this->clear(); 1510 else 1511 this->setstate(ios_base::failbit); 1512} 1513 1514#ifdef _LIBCPP_HAS_OPEN_WITH_WCHAR 1515template <class _CharT, class _Traits> 1516void 1517basic_ofstream<_CharT, _Traits>::open(const wchar_t* __s, ios_base::openmode __mode) 1518{ 1519 if (__sb_.open(__s, __mode | ios_base::out)) 1520 this->clear(); 1521 else 1522 this->setstate(ios_base::failbit); 1523} 1524#endif 1525 1526template <class _CharT, class _Traits> 1527void 1528basic_ofstream<_CharT, _Traits>::open(const string& __s, ios_base::openmode __mode) 1529{ 1530 if (__sb_.open(__s, __mode | ios_base::out)) 1531 this->clear(); 1532 else 1533 this->setstate(ios_base::failbit); 1534} 1535 1536template <class _CharT, class _Traits> 1537void basic_ofstream<_CharT, _Traits>::__open(int __fd, 1538 ios_base::openmode __mode) { 1539 if (__sb_.__open(__fd, __mode | ios_base::out)) 1540 this->clear(); 1541 else 1542 this->setstate(ios_base::failbit); 1543} 1544#endif 1545 1546template <class _CharT, class _Traits> 1547inline 1548void 1549basic_ofstream<_CharT, _Traits>::close() 1550{ 1551 if (__sb_.close() == 0) 1552 this->setstate(ios_base::failbit); 1553} 1554 1555// basic_fstream 1556 1557template <class _CharT, class _Traits> 1558class _LIBCPP_TEMPLATE_VIS basic_fstream 1559 : public basic_iostream<_CharT, _Traits> 1560{ 1561public: 1562 typedef _CharT char_type; 1563 typedef _Traits traits_type; 1564 typedef typename traits_type::int_type int_type; 1565 typedef typename traits_type::pos_type pos_type; 1566 typedef typename traits_type::off_type off_type; 1567 1568 _LIBCPP_INLINE_VISIBILITY 1569 basic_fstream(); 1570#ifndef _LIBCPP_HAS_NO_GLOBAL_FILESYSTEM_NAMESPACE 1571 _LIBCPP_INLINE_VISIBILITY 1572 explicit basic_fstream(const char* __s, ios_base::openmode __mode = ios_base::in | ios_base::out); 1573#ifdef _LIBCPP_HAS_OPEN_WITH_WCHAR 1574 _LIBCPP_INLINE_VISIBILITY 1575 explicit basic_fstream(const wchar_t* __s, ios_base::openmode __mode = ios_base::in | ios_base::out); 1576#endif 1577 _LIBCPP_INLINE_VISIBILITY 1578 explicit basic_fstream(const string& __s, ios_base::openmode __mode = ios_base::in | ios_base::out); 1579 1580#if _LIBCPP_STD_VER >= 17 1581 _LIBCPP_AVAILABILITY_FILESYSTEM _LIBCPP_INLINE_VISIBILITY 1582 explicit basic_fstream(const filesystem::path& __p, ios_base::openmode __mode = ios_base::in | ios_base::out) 1583 : basic_fstream(__p.c_str(), __mode) {} 1584#endif // _LIBCPP_STD_VER >= 17 1585 1586#endif 1587#ifndef _LIBCPP_CXX03_LANG 1588 _LIBCPP_INLINE_VISIBILITY 1589 basic_fstream(basic_fstream&& __rhs); 1590 1591 _LIBCPP_INLINE_VISIBILITY 1592 basic_fstream& operator=(basic_fstream&& __rhs); 1593#endif 1594 _LIBCPP_INLINE_VISIBILITY 1595 void swap(basic_fstream& __rhs); 1596 1597 _LIBCPP_INLINE_VISIBILITY 1598 basic_filebuf<char_type, traits_type>* rdbuf() const; 1599 _LIBCPP_INLINE_VISIBILITY 1600 bool is_open() const; 1601#ifndef _LIBCPP_HAS_NO_GLOBAL_FILESYSTEM_NAMESPACE 1602 void open(const char* __s, ios_base::openmode __mode = ios_base::in | ios_base::out); 1603#ifdef _LIBCPP_HAS_OPEN_WITH_WCHAR 1604 void open(const wchar_t* __s, ios_base::openmode __mode = ios_base::in | ios_base::out); 1605#endif 1606 void open(const string& __s, ios_base::openmode __mode = ios_base::in | ios_base::out); 1607 1608#if _LIBCPP_STD_VER >= 17 1609 _LIBCPP_AVAILABILITY_FILESYSTEM _LIBCPP_INLINE_VISIBILITY 1610 void open(const filesystem::path& __p, ios_base::openmode __mode = ios_base::in|ios_base::out) 1611 { return open(__p.c_str(), __mode); } 1612#endif // _LIBCPP_STD_VER >= 17 1613 1614#endif 1615 _LIBCPP_INLINE_VISIBILITY 1616 void close(); 1617 1618private: 1619 basic_filebuf<char_type, traits_type> __sb_; 1620}; 1621 1622template <class _CharT, class _Traits> 1623inline 1624basic_fstream<_CharT, _Traits>::basic_fstream() 1625 : basic_iostream<char_type, traits_type>(&__sb_) 1626{ 1627} 1628 1629#ifndef _LIBCPP_HAS_NO_GLOBAL_FILESYSTEM_NAMESPACE 1630template <class _CharT, class _Traits> 1631inline 1632basic_fstream<_CharT, _Traits>::basic_fstream(const char* __s, ios_base::openmode __mode) 1633 : basic_iostream<char_type, traits_type>(&__sb_) 1634{ 1635 if (__sb_.open(__s, __mode) == 0) 1636 this->setstate(ios_base::failbit); 1637} 1638 1639#ifdef _LIBCPP_HAS_OPEN_WITH_WCHAR 1640template <class _CharT, class _Traits> 1641inline 1642basic_fstream<_CharT, _Traits>::basic_fstream(const wchar_t* __s, ios_base::openmode __mode) 1643 : basic_iostream<char_type, traits_type>(&__sb_) 1644{ 1645 if (__sb_.open(__s, __mode) == 0) 1646 this->setstate(ios_base::failbit); 1647} 1648#endif 1649 1650template <class _CharT, class _Traits> 1651inline 1652basic_fstream<_CharT, _Traits>::basic_fstream(const string& __s, ios_base::openmode __mode) 1653 : basic_iostream<char_type, traits_type>(&__sb_) 1654{ 1655 if (__sb_.open(__s, __mode) == 0) 1656 this->setstate(ios_base::failbit); 1657} 1658#endif 1659 1660#ifndef _LIBCPP_CXX03_LANG 1661 1662template <class _CharT, class _Traits> 1663inline 1664basic_fstream<_CharT, _Traits>::basic_fstream(basic_fstream&& __rhs) 1665 : basic_iostream<char_type, traits_type>(_VSTD::move(__rhs)), 1666 __sb_(_VSTD::move(__rhs.__sb_)) 1667{ 1668 this->set_rdbuf(&__sb_); 1669} 1670 1671template <class _CharT, class _Traits> 1672inline 1673basic_fstream<_CharT, _Traits>& 1674basic_fstream<_CharT, _Traits>::operator=(basic_fstream&& __rhs) 1675{ 1676 basic_iostream<char_type, traits_type>::operator=(_VSTD::move(__rhs)); 1677 __sb_ = _VSTD::move(__rhs.__sb_); 1678 return *this; 1679} 1680 1681#endif // _LIBCPP_CXX03_LANG 1682 1683template <class _CharT, class _Traits> 1684inline 1685void 1686basic_fstream<_CharT, _Traits>::swap(basic_fstream& __rhs) 1687{ 1688 basic_iostream<char_type, traits_type>::swap(__rhs); 1689 __sb_.swap(__rhs.__sb_); 1690} 1691 1692template <class _CharT, class _Traits> 1693inline _LIBCPP_INLINE_VISIBILITY 1694void 1695swap(basic_fstream<_CharT, _Traits>& __x, basic_fstream<_CharT, _Traits>& __y) 1696{ 1697 __x.swap(__y); 1698} 1699 1700template <class _CharT, class _Traits> 1701inline 1702basic_filebuf<_CharT, _Traits>* 1703basic_fstream<_CharT, _Traits>::rdbuf() const 1704{ 1705 return const_cast<basic_filebuf<char_type, traits_type>*>(&__sb_); 1706} 1707 1708template <class _CharT, class _Traits> 1709inline 1710bool 1711basic_fstream<_CharT, _Traits>::is_open() const 1712{ 1713 return __sb_.is_open(); 1714} 1715 1716#ifndef _LIBCPP_HAS_NO_GLOBAL_FILESYSTEM_NAMESPACE 1717template <class _CharT, class _Traits> 1718void 1719basic_fstream<_CharT, _Traits>::open(const char* __s, ios_base::openmode __mode) 1720{ 1721 if (__sb_.open(__s, __mode)) 1722 this->clear(); 1723 else 1724 this->setstate(ios_base::failbit); 1725} 1726 1727#ifdef _LIBCPP_HAS_OPEN_WITH_WCHAR 1728template <class _CharT, class _Traits> 1729void 1730basic_fstream<_CharT, _Traits>::open(const wchar_t* __s, ios_base::openmode __mode) 1731{ 1732 if (__sb_.open(__s, __mode)) 1733 this->clear(); 1734 else 1735 this->setstate(ios_base::failbit); 1736} 1737#endif 1738 1739template <class _CharT, class _Traits> 1740void 1741basic_fstream<_CharT, _Traits>::open(const string& __s, ios_base::openmode __mode) 1742{ 1743 if (__sb_.open(__s, __mode)) 1744 this->clear(); 1745 else 1746 this->setstate(ios_base::failbit); 1747} 1748#endif 1749 1750template <class _CharT, class _Traits> 1751inline 1752void 1753basic_fstream<_CharT, _Traits>::close() 1754{ 1755 if (__sb_.close() == 0) 1756 this->setstate(ios_base::failbit); 1757} 1758 1759_LIBCPP_END_NAMESPACE_STD 1760 1761_LIBCPP_POP_MACROS 1762 1763#endif // _LIBCPP_FSTREAM 1764