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"; 512 case ios_base::out | ios_base::app: 513 case ios_base::app: 514 return "a"; 515 case ios_base::in: 516 return "r"; 517 case ios_base::in | ios_base::out: 518 return "r+"; 519 case ios_base::in | ios_base::out | ios_base::trunc: 520 return "w+"; 521 case ios_base::in | ios_base::out | ios_base::app: 522 case ios_base::in | ios_base::app: 523 return "a+"; 524 case ios_base::out | ios_base::binary: 525 case ios_base::out | ios_base::trunc | ios_base::binary: 526 return "wb"; 527 case ios_base::out | ios_base::app | ios_base::binary: 528 case ios_base::app | ios_base::binary: 529 return "ab"; 530 case ios_base::in | ios_base::binary: 531 return "rb"; 532 case ios_base::in | ios_base::out | ios_base::binary: 533 return "r+b"; 534 case ios_base::in | ios_base::out | ios_base::trunc | ios_base::binary: 535 return "w+b"; 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"; 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()) == 0) 701 __file_ = 0; 702 else 703 __rt = 0; 704 setbuf(0, 0); 705 } 706 return __rt; 707} 708 709template <class _CharT, class _Traits> 710typename basic_filebuf<_CharT, _Traits>::int_type 711basic_filebuf<_CharT, _Traits>::underflow() 712{ 713 if (__file_ == 0) 714 return traits_type::eof(); 715 bool __initial = __read_mode(); 716 char_type __1buf; 717 if (this->gptr() == 0) 718 this->setg(&__1buf, &__1buf+1, &__1buf+1); 719 const size_t __unget_sz = __initial ? 0 : min<size_t>((this->egptr() - this->eback()) / 2, 4); 720 int_type __c = traits_type::eof(); 721 if (this->gptr() == this->egptr()) 722 { 723 memmove(this->eback(), this->egptr() - __unget_sz, __unget_sz * sizeof(char_type)); 724 if (__always_noconv_) 725 { 726 size_t __nmemb = static_cast<size_t>(this->egptr() - this->eback() - __unget_sz); 727 __nmemb = fread(this->eback() + __unget_sz, 1, __nmemb, __file_); 728 if (__nmemb != 0) 729 { 730 this->setg(this->eback(), 731 this->eback() + __unget_sz, 732 this->eback() + __unget_sz + __nmemb); 733 __c = traits_type::to_int_type(*this->gptr()); 734 } 735 } 736 else 737 { 738 _LIBCPP_ASSERT ( !(__extbufnext_ == NULL && (__extbufend_ != __extbufnext_)), "underflow moving from NULL" ); 739 if (__extbufend_ != __extbufnext_) 740 memmove(__extbuf_, __extbufnext_, __extbufend_ - __extbufnext_); 741 __extbufnext_ = __extbuf_ + (__extbufend_ - __extbufnext_); 742 __extbufend_ = __extbuf_ + (__extbuf_ == __extbuf_min_ ? sizeof(__extbuf_min_) : __ebs_); 743 size_t __nmemb = _VSTD::min(static_cast<size_t>(__ibs_ - __unget_sz), 744 static_cast<size_t>(__extbufend_ - __extbufnext_)); 745 codecvt_base::result __r; 746 __st_last_ = __st_; 747 size_t __nr = fread((void*) const_cast<char *>(__extbufnext_), 1, __nmemb, __file_); 748 if (__nr != 0) 749 { 750 if (!__cv_) 751 __throw_bad_cast(); 752 753 __extbufend_ = __extbufnext_ + __nr; 754 char_type* __inext; 755 __r = __cv_->in(__st_, __extbuf_, __extbufend_, __extbufnext_, 756 this->eback() + __unget_sz, 757 this->eback() + __ibs_, __inext); 758 if (__r == codecvt_base::noconv) 759 { 760 this->setg((char_type*)__extbuf_, (char_type*)__extbuf_, 761 (char_type*)const_cast<char *>(__extbufend_)); 762 __c = traits_type::to_int_type(*this->gptr()); 763 } 764 else if (__inext != this->eback() + __unget_sz) 765 { 766 this->setg(this->eback(), this->eback() + __unget_sz, __inext); 767 __c = traits_type::to_int_type(*this->gptr()); 768 } 769 } 770 } 771 } 772 else 773 __c = traits_type::to_int_type(*this->gptr()); 774 if (this->eback() == &__1buf) 775 this->setg(0, 0, 0); 776 return __c; 777} 778 779template <class _CharT, class _Traits> 780typename basic_filebuf<_CharT, _Traits>::int_type 781basic_filebuf<_CharT, _Traits>::pbackfail(int_type __c) 782{ 783 if (__file_ && this->eback() < this->gptr()) 784 { 785 if (traits_type::eq_int_type(__c, traits_type::eof())) 786 { 787 this->gbump(-1); 788 return traits_type::not_eof(__c); 789 } 790 if ((__om_ & ios_base::out) || 791 traits_type::eq(traits_type::to_char_type(__c), this->gptr()[-1])) 792 { 793 this->gbump(-1); 794 *this->gptr() = traits_type::to_char_type(__c); 795 return __c; 796 } 797 } 798 return traits_type::eof(); 799} 800 801template <class _CharT, class _Traits> 802typename basic_filebuf<_CharT, _Traits>::int_type 803basic_filebuf<_CharT, _Traits>::overflow(int_type __c) 804{ 805 if (__file_ == 0) 806 return traits_type::eof(); 807 __write_mode(); 808 char_type __1buf; 809 char_type* __pb_save = this->pbase(); 810 char_type* __epb_save = this->epptr(); 811 if (!traits_type::eq_int_type(__c, traits_type::eof())) 812 { 813 if (this->pptr() == 0) 814 this->setp(&__1buf, &__1buf+1); 815 *this->pptr() = traits_type::to_char_type(__c); 816 this->pbump(1); 817 } 818 if (this->pptr() != this->pbase()) 819 { 820 if (__always_noconv_) 821 { 822 size_t __nmemb = static_cast<size_t>(this->pptr() - this->pbase()); 823 if (fwrite(this->pbase(), sizeof(char_type), __nmemb, __file_) != __nmemb) 824 return traits_type::eof(); 825 } 826 else 827 { 828 char* __extbe = __extbuf_; 829 codecvt_base::result __r; 830 do 831 { 832 if (!__cv_) 833 __throw_bad_cast(); 834 835 const char_type* __e; 836 __r = __cv_->out(__st_, this->pbase(), this->pptr(), __e, 837 __extbuf_, __extbuf_ + __ebs_, __extbe); 838 if (__e == this->pbase()) 839 return traits_type::eof(); 840 if (__r == codecvt_base::noconv) 841 { 842 size_t __nmemb = static_cast<size_t>(this->pptr() - this->pbase()); 843 if (fwrite(this->pbase(), 1, __nmemb, __file_) != __nmemb) 844 return traits_type::eof(); 845 } 846 else if (__r == codecvt_base::ok || __r == codecvt_base::partial) 847 { 848 size_t __nmemb = static_cast<size_t>(__extbe - __extbuf_); 849 if (fwrite(__extbuf_, 1, __nmemb, __file_) != __nmemb) 850 return traits_type::eof(); 851 if (__r == codecvt_base::partial) 852 { 853 this->setp(const_cast<char_type*>(__e), this->pptr()); 854 this->__pbump(this->epptr() - this->pbase()); 855 } 856 } 857 else 858 return traits_type::eof(); 859 } while (__r == codecvt_base::partial); 860 } 861 this->setp(__pb_save, __epb_save); 862 } 863 return traits_type::not_eof(__c); 864} 865 866template <class _CharT, class _Traits> 867basic_streambuf<_CharT, _Traits>* 868basic_filebuf<_CharT, _Traits>::setbuf(char_type* __s, streamsize __n) 869{ 870 this->setg(0, 0, 0); 871 this->setp(0, 0); 872 if (__owns_eb_) 873 delete [] __extbuf_; 874 if (__owns_ib_) 875 delete [] __intbuf_; 876 __ebs_ = __n; 877 if (__ebs_ > sizeof(__extbuf_min_)) 878 { 879 if (__always_noconv_ && __s) 880 { 881 __extbuf_ = (char*)__s; 882 __owns_eb_ = false; 883 } 884 else 885 { 886 __extbuf_ = new char[__ebs_]; 887 __owns_eb_ = true; 888 } 889 } 890 else 891 { 892 __extbuf_ = __extbuf_min_; 893 __ebs_ = sizeof(__extbuf_min_); 894 __owns_eb_ = false; 895 } 896 if (!__always_noconv_) 897 { 898 __ibs_ = max<streamsize>(__n, sizeof(__extbuf_min_)); 899 if (__s && __ibs_ >= sizeof(__extbuf_min_)) 900 { 901 __intbuf_ = __s; 902 __owns_ib_ = false; 903 } 904 else 905 { 906 __intbuf_ = new char_type[__ibs_]; 907 __owns_ib_ = true; 908 } 909 } 910 else 911 { 912 __ibs_ = 0; 913 __intbuf_ = 0; 914 __owns_ib_ = false; 915 } 916 return this; 917} 918 919template <class _CharT, class _Traits> 920typename basic_filebuf<_CharT, _Traits>::pos_type 921basic_filebuf<_CharT, _Traits>::seekoff(off_type __off, ios_base::seekdir __way, 922 ios_base::openmode) 923{ 924 if (!__cv_) 925 __throw_bad_cast(); 926 927 int __width = __cv_->encoding(); 928 if (__file_ == 0 || (__width <= 0 && __off != 0) || sync()) 929 return pos_type(off_type(-1)); 930 // __width > 0 || __off == 0 931 int __whence; 932 switch (__way) 933 { 934 case ios_base::beg: 935 __whence = SEEK_SET; 936 break; 937 case ios_base::cur: 938 __whence = SEEK_CUR; 939 break; 940 case ios_base::end: 941 __whence = SEEK_END; 942 break; 943 default: 944 return pos_type(off_type(-1)); 945 } 946#if defined(_LIBCPP_HAS_NO_OFF_T_FUNCTIONS) 947 if (fseek(__file_, __width > 0 ? __width * __off : 0, __whence)) 948 return pos_type(off_type(-1)); 949 pos_type __r = ftell(__file_); 950#else 951 if (fseeko(__file_, __width > 0 ? __width * __off : 0, __whence)) 952 return pos_type(off_type(-1)); 953 pos_type __r = ftello(__file_); 954#endif 955 __r.state(__st_); 956 return __r; 957} 958 959template <class _CharT, class _Traits> 960typename basic_filebuf<_CharT, _Traits>::pos_type 961basic_filebuf<_CharT, _Traits>::seekpos(pos_type __sp, ios_base::openmode) 962{ 963 if (__file_ == 0 || sync()) 964 return pos_type(off_type(-1)); 965#if defined(_LIBCPP_HAS_NO_OFF_T_FUNCTIONS) 966 if (fseek(__file_, __sp, SEEK_SET)) 967 return pos_type(off_type(-1)); 968#else 969 if (fseeko(__file_, __sp, SEEK_SET)) 970 return pos_type(off_type(-1)); 971#endif 972 __st_ = __sp.state(); 973 return __sp; 974} 975 976template <class _CharT, class _Traits> 977int 978basic_filebuf<_CharT, _Traits>::sync() 979{ 980 if (__file_ == 0) 981 return 0; 982 if (!__cv_) 983 __throw_bad_cast(); 984 985 if (__cm_ & ios_base::out) 986 { 987 if (this->pptr() != this->pbase()) 988 if (overflow() == traits_type::eof()) 989 return -1; 990 codecvt_base::result __r; 991 do 992 { 993 char* __extbe; 994 __r = __cv_->unshift(__st_, __extbuf_, __extbuf_ + __ebs_, __extbe); 995 size_t __nmemb = static_cast<size_t>(__extbe - __extbuf_); 996 if (fwrite(__extbuf_, 1, __nmemb, __file_) != __nmemb) 997 return -1; 998 } while (__r == codecvt_base::partial); 999 if (__r == codecvt_base::error) 1000 return -1; 1001 if (fflush(__file_)) 1002 return -1; 1003 } 1004 else if (__cm_ & ios_base::in) 1005 { 1006 off_type __c; 1007 state_type __state = __st_last_; 1008 bool __update_st = false; 1009 if (__always_noconv_) 1010 __c = this->egptr() - this->gptr(); 1011 else 1012 { 1013 int __width = __cv_->encoding(); 1014 __c = __extbufend_ - __extbufnext_; 1015 if (__width > 0) 1016 __c += __width * (this->egptr() - this->gptr()); 1017 else 1018 { 1019 if (this->gptr() != this->egptr()) 1020 { 1021 const int __off = __cv_->length(__state, __extbuf_, 1022 __extbufnext_, 1023 this->gptr() - this->eback()); 1024 __c += __extbufnext_ - __extbuf_ - __off; 1025 __update_st = true; 1026 } 1027 } 1028 } 1029#if defined(_LIBCPP_HAS_NO_OFF_T_FUNCTIONS) 1030 if (fseek(__file_, -__c, SEEK_CUR)) 1031 return -1; 1032#else 1033 if (fseeko(__file_, -__c, SEEK_CUR)) 1034 return -1; 1035#endif 1036 if (__update_st) 1037 __st_ = __state; 1038 __extbufnext_ = __extbufend_ = __extbuf_; 1039 this->setg(0, 0, 0); 1040 __cm_ = 0; 1041 } 1042 return 0; 1043} 1044 1045template <class _CharT, class _Traits> 1046void 1047basic_filebuf<_CharT, _Traits>::imbue(const locale& __loc) 1048{ 1049 sync(); 1050 __cv_ = &use_facet<codecvt<char_type, char, state_type> >(__loc); 1051 bool __old_anc = __always_noconv_; 1052 __always_noconv_ = __cv_->always_noconv(); 1053 if (__old_anc != __always_noconv_) 1054 { 1055 this->setg(0, 0, 0); 1056 this->setp(0, 0); 1057 // invariant, char_type is char, else we couldn't get here 1058 if (__always_noconv_) // need to dump __intbuf_ 1059 { 1060 if (__owns_eb_) 1061 delete [] __extbuf_; 1062 __owns_eb_ = __owns_ib_; 1063 __ebs_ = __ibs_; 1064 __extbuf_ = (char*)__intbuf_; 1065 __ibs_ = 0; 1066 __intbuf_ = 0; 1067 __owns_ib_ = false; 1068 } 1069 else // need to obtain an __intbuf_. 1070 { // If __extbuf_ is user-supplied, use it, else new __intbuf_ 1071 if (!__owns_eb_ && __extbuf_ != __extbuf_min_) 1072 { 1073 __ibs_ = __ebs_; 1074 __intbuf_ = (char_type*)__extbuf_; 1075 __owns_ib_ = false; 1076 __extbuf_ = new char[__ebs_]; 1077 __owns_eb_ = true; 1078 } 1079 else 1080 { 1081 __ibs_ = __ebs_; 1082 __intbuf_ = new char_type[__ibs_]; 1083 __owns_ib_ = true; 1084 } 1085 } 1086 } 1087} 1088 1089template <class _CharT, class _Traits> 1090bool 1091basic_filebuf<_CharT, _Traits>::__read_mode() 1092{ 1093 if (!(__cm_ & ios_base::in)) 1094 { 1095 this->setp(0, 0); 1096 if (__always_noconv_) 1097 this->setg((char_type*)__extbuf_, 1098 (char_type*)__extbuf_ + __ebs_, 1099 (char_type*)__extbuf_ + __ebs_); 1100 else 1101 this->setg(__intbuf_, __intbuf_ + __ibs_, __intbuf_ + __ibs_); 1102 __cm_ = ios_base::in; 1103 return true; 1104 } 1105 return false; 1106} 1107 1108template <class _CharT, class _Traits> 1109void 1110basic_filebuf<_CharT, _Traits>::__write_mode() 1111{ 1112 if (!(__cm_ & ios_base::out)) 1113 { 1114 this->setg(0, 0, 0); 1115 if (__ebs_ > sizeof(__extbuf_min_)) 1116 { 1117 if (__always_noconv_) 1118 this->setp((char_type*)__extbuf_, 1119 (char_type*)__extbuf_ + (__ebs_ - 1)); 1120 else 1121 this->setp(__intbuf_, __intbuf_ + (__ibs_ - 1)); 1122 } 1123 else 1124 this->setp(0, 0); 1125 __cm_ = ios_base::out; 1126 } 1127} 1128 1129// basic_ifstream 1130 1131template <class _CharT, class _Traits> 1132class _LIBCPP_TEMPLATE_VIS basic_ifstream 1133 : public basic_istream<_CharT, _Traits> 1134{ 1135public: 1136 typedef _CharT char_type; 1137 typedef _Traits traits_type; 1138 typedef typename traits_type::int_type int_type; 1139 typedef typename traits_type::pos_type pos_type; 1140 typedef typename traits_type::off_type off_type; 1141 1142 _LIBCPP_INLINE_VISIBILITY 1143 basic_ifstream(); 1144#ifndef _LIBCPP_HAS_NO_GLOBAL_FILESYSTEM_NAMESPACE 1145 _LIBCPP_INLINE_VISIBILITY 1146 explicit basic_ifstream(const char* __s, ios_base::openmode __mode = ios_base::in); 1147#ifdef _LIBCPP_HAS_OPEN_WITH_WCHAR 1148 _LIBCPP_INLINE_VISIBILITY 1149 explicit basic_ifstream(const wchar_t* __s, ios_base::openmode __mode = ios_base::in); 1150#endif 1151 _LIBCPP_INLINE_VISIBILITY 1152 explicit basic_ifstream(const string& __s, ios_base::openmode __mode = ios_base::in); 1153#if _LIBCPP_STD_VER >= 17 1154 _LIBCPP_AVAILABILITY_FILESYSTEM _LIBCPP_INLINE_VISIBILITY 1155 explicit basic_ifstream(const filesystem::path& __p, ios_base::openmode __mode = ios_base::in) 1156 : basic_ifstream(__p.c_str(), __mode) {} 1157#endif // _LIBCPP_STD_VER >= 17 1158#endif 1159#ifndef _LIBCPP_CXX03_LANG 1160 _LIBCPP_INLINE_VISIBILITY 1161 basic_ifstream(basic_ifstream&& __rhs); 1162 1163 _LIBCPP_INLINE_VISIBILITY 1164 basic_ifstream& operator=(basic_ifstream&& __rhs); 1165#endif 1166 _LIBCPP_INLINE_VISIBILITY 1167 void swap(basic_ifstream& __rhs); 1168 1169 _LIBCPP_INLINE_VISIBILITY 1170 basic_filebuf<char_type, traits_type>* rdbuf() const; 1171 _LIBCPP_INLINE_VISIBILITY 1172 bool is_open() const; 1173#ifndef _LIBCPP_HAS_NO_GLOBAL_FILESYSTEM_NAMESPACE 1174 void open(const char* __s, ios_base::openmode __mode = ios_base::in); 1175#ifdef _LIBCPP_HAS_OPEN_WITH_WCHAR 1176 void open(const wchar_t* __s, ios_base::openmode __mode = ios_base::in); 1177#endif 1178 void open(const string& __s, ios_base::openmode __mode = ios_base::in); 1179#if _LIBCPP_STD_VER >= 17 1180 _LIBCPP_AVAILABILITY_FILESYSTEM _LIBCPP_INLINE_VISIBILITY 1181 void open(const filesystem::path& __p, 1182 ios_base::openmode __mode = ios_base::in) { 1183 return open(__p.c_str(), __mode); 1184 } 1185#endif // _LIBCPP_STD_VER >= 17 1186 1187 _LIBCPP_INLINE_VISIBILITY 1188 void __open(int __fd, ios_base::openmode __mode); 1189#endif 1190 _LIBCPP_INLINE_VISIBILITY 1191 void close(); 1192 1193private: 1194 basic_filebuf<char_type, traits_type> __sb_; 1195}; 1196 1197template <class _CharT, class _Traits> 1198inline 1199basic_ifstream<_CharT, _Traits>::basic_ifstream() 1200 : basic_istream<char_type, traits_type>(&__sb_) 1201{ 1202} 1203 1204#ifndef _LIBCPP_HAS_NO_GLOBAL_FILESYSTEM_NAMESPACE 1205template <class _CharT, class _Traits> 1206inline 1207basic_ifstream<_CharT, _Traits>::basic_ifstream(const char* __s, ios_base::openmode __mode) 1208 : basic_istream<char_type, traits_type>(&__sb_) 1209{ 1210 if (__sb_.open(__s, __mode | ios_base::in) == 0) 1211 this->setstate(ios_base::failbit); 1212} 1213 1214#ifdef _LIBCPP_HAS_OPEN_WITH_WCHAR 1215template <class _CharT, class _Traits> 1216inline 1217basic_ifstream<_CharT, _Traits>::basic_ifstream(const wchar_t* __s, ios_base::openmode __mode) 1218 : basic_istream<char_type, traits_type>(&__sb_) 1219{ 1220 if (__sb_.open(__s, __mode | ios_base::in) == 0) 1221 this->setstate(ios_base::failbit); 1222} 1223#endif 1224 1225template <class _CharT, class _Traits> 1226inline 1227basic_ifstream<_CharT, _Traits>::basic_ifstream(const string& __s, ios_base::openmode __mode) 1228 : basic_istream<char_type, traits_type>(&__sb_) 1229{ 1230 if (__sb_.open(__s, __mode | ios_base::in) == 0) 1231 this->setstate(ios_base::failbit); 1232} 1233#endif 1234 1235#ifndef _LIBCPP_CXX03_LANG 1236 1237template <class _CharT, class _Traits> 1238inline 1239basic_ifstream<_CharT, _Traits>::basic_ifstream(basic_ifstream&& __rhs) 1240 : basic_istream<char_type, traits_type>(_VSTD::move(__rhs)), 1241 __sb_(_VSTD::move(__rhs.__sb_)) 1242{ 1243 this->set_rdbuf(&__sb_); 1244} 1245 1246template <class _CharT, class _Traits> 1247inline 1248basic_ifstream<_CharT, _Traits>& 1249basic_ifstream<_CharT, _Traits>::operator=(basic_ifstream&& __rhs) 1250{ 1251 basic_istream<char_type, traits_type>::operator=(_VSTD::move(__rhs)); 1252 __sb_ = _VSTD::move(__rhs.__sb_); 1253 return *this; 1254} 1255 1256#endif // _LIBCPP_CXX03_LANG 1257 1258template <class _CharT, class _Traits> 1259inline 1260void 1261basic_ifstream<_CharT, _Traits>::swap(basic_ifstream& __rhs) 1262{ 1263 basic_istream<char_type, traits_type>::swap(__rhs); 1264 __sb_.swap(__rhs.__sb_); 1265} 1266 1267template <class _CharT, class _Traits> 1268inline _LIBCPP_INLINE_VISIBILITY 1269void 1270swap(basic_ifstream<_CharT, _Traits>& __x, basic_ifstream<_CharT, _Traits>& __y) 1271{ 1272 __x.swap(__y); 1273} 1274 1275template <class _CharT, class _Traits> 1276inline 1277basic_filebuf<_CharT, _Traits>* 1278basic_ifstream<_CharT, _Traits>::rdbuf() const 1279{ 1280 return const_cast<basic_filebuf<char_type, traits_type>*>(&__sb_); 1281} 1282 1283template <class _CharT, class _Traits> 1284inline 1285bool 1286basic_ifstream<_CharT, _Traits>::is_open() const 1287{ 1288 return __sb_.is_open(); 1289} 1290 1291#ifndef _LIBCPP_HAS_NO_GLOBAL_FILESYSTEM_NAMESPACE 1292template <class _CharT, class _Traits> 1293void 1294basic_ifstream<_CharT, _Traits>::open(const char* __s, ios_base::openmode __mode) 1295{ 1296 if (__sb_.open(__s, __mode | ios_base::in)) 1297 this->clear(); 1298 else 1299 this->setstate(ios_base::failbit); 1300} 1301 1302#ifdef _LIBCPP_HAS_OPEN_WITH_WCHAR 1303template <class _CharT, class _Traits> 1304void 1305basic_ifstream<_CharT, _Traits>::open(const wchar_t* __s, ios_base::openmode __mode) 1306{ 1307 if (__sb_.open(__s, __mode | ios_base::in)) 1308 this->clear(); 1309 else 1310 this->setstate(ios_base::failbit); 1311} 1312#endif 1313 1314template <class _CharT, class _Traits> 1315void 1316basic_ifstream<_CharT, _Traits>::open(const string& __s, ios_base::openmode __mode) 1317{ 1318 if (__sb_.open(__s, __mode | ios_base::in)) 1319 this->clear(); 1320 else 1321 this->setstate(ios_base::failbit); 1322} 1323 1324template <class _CharT, class _Traits> 1325void basic_ifstream<_CharT, _Traits>::__open(int __fd, 1326 ios_base::openmode __mode) { 1327 if (__sb_.__open(__fd, __mode | ios_base::in)) 1328 this->clear(); 1329 else 1330 this->setstate(ios_base::failbit); 1331} 1332#endif 1333 1334template <class _CharT, class _Traits> 1335inline 1336void 1337basic_ifstream<_CharT, _Traits>::close() 1338{ 1339 if (__sb_.close() == 0) 1340 this->setstate(ios_base::failbit); 1341} 1342 1343// basic_ofstream 1344 1345template <class _CharT, class _Traits> 1346class _LIBCPP_TEMPLATE_VIS basic_ofstream 1347 : public basic_ostream<_CharT, _Traits> 1348{ 1349public: 1350 typedef _CharT char_type; 1351 typedef _Traits traits_type; 1352 typedef typename traits_type::int_type int_type; 1353 typedef typename traits_type::pos_type pos_type; 1354 typedef typename traits_type::off_type off_type; 1355 1356 _LIBCPP_INLINE_VISIBILITY 1357 basic_ofstream(); 1358 _LIBCPP_INLINE_VISIBILITY 1359 explicit basic_ofstream(const char* __s, ios_base::openmode __mode = ios_base::out); 1360#ifdef _LIBCPP_HAS_OPEN_WITH_WCHAR 1361 _LIBCPP_INLINE_VISIBILITY 1362 explicit basic_ofstream(const wchar_t* __s, ios_base::openmode __mode = ios_base::out); 1363#endif 1364 _LIBCPP_INLINE_VISIBILITY 1365 explicit basic_ofstream(const string& __s, ios_base::openmode __mode = ios_base::out); 1366 1367#if _LIBCPP_STD_VER >= 17 1368 _LIBCPP_AVAILABILITY_FILESYSTEM _LIBCPP_INLINE_VISIBILITY 1369 explicit basic_ofstream(const filesystem::path& __p, ios_base::openmode __mode = ios_base::out) 1370 : basic_ofstream(__p.c_str(), __mode) {} 1371#endif // _LIBCPP_STD_VER >= 17 1372 1373#ifndef _LIBCPP_CXX03_LANG 1374 _LIBCPP_INLINE_VISIBILITY 1375 basic_ofstream(basic_ofstream&& __rhs); 1376 1377 _LIBCPP_INLINE_VISIBILITY 1378 basic_ofstream& operator=(basic_ofstream&& __rhs); 1379#endif 1380 _LIBCPP_INLINE_VISIBILITY 1381 void swap(basic_ofstream& __rhs); 1382 1383 _LIBCPP_INLINE_VISIBILITY 1384 basic_filebuf<char_type, traits_type>* rdbuf() const; 1385 _LIBCPP_INLINE_VISIBILITY 1386 bool is_open() const; 1387#ifndef _LIBCPP_HAS_NO_GLOBAL_FILESYSTEM_NAMESPACE 1388 void open(const char* __s, ios_base::openmode __mode = ios_base::out); 1389#ifdef _LIBCPP_HAS_OPEN_WITH_WCHAR 1390 void open(const wchar_t* __s, ios_base::openmode __mode = ios_base::out); 1391#endif 1392 void open(const string& __s, ios_base::openmode __mode = ios_base::out); 1393 1394#if _LIBCPP_STD_VER >= 17 1395 _LIBCPP_AVAILABILITY_FILESYSTEM _LIBCPP_INLINE_VISIBILITY 1396 void open(const filesystem::path& __p, ios_base::openmode __mode = ios_base::out) 1397 { return open(__p.c_str(), __mode); } 1398#endif // _LIBCPP_STD_VER >= 17 1399 1400 _LIBCPP_INLINE_VISIBILITY 1401 void __open(int __fd, ios_base::openmode __mode); 1402#endif 1403 _LIBCPP_INLINE_VISIBILITY 1404 void close(); 1405 1406private: 1407 basic_filebuf<char_type, traits_type> __sb_; 1408}; 1409 1410template <class _CharT, class _Traits> 1411inline 1412basic_ofstream<_CharT, _Traits>::basic_ofstream() 1413 : basic_ostream<char_type, traits_type>(&__sb_) 1414{ 1415} 1416 1417#ifndef _LIBCPP_HAS_NO_GLOBAL_FILESYSTEM_NAMESPACE 1418template <class _CharT, class _Traits> 1419inline 1420basic_ofstream<_CharT, _Traits>::basic_ofstream(const char* __s, ios_base::openmode __mode) 1421 : basic_ostream<char_type, traits_type>(&__sb_) 1422{ 1423 if (__sb_.open(__s, __mode | ios_base::out) == 0) 1424 this->setstate(ios_base::failbit); 1425} 1426 1427#ifdef _LIBCPP_HAS_OPEN_WITH_WCHAR 1428template <class _CharT, class _Traits> 1429inline 1430basic_ofstream<_CharT, _Traits>::basic_ofstream(const wchar_t* __s, ios_base::openmode __mode) 1431 : basic_ostream<char_type, traits_type>(&__sb_) 1432{ 1433 if (__sb_.open(__s, __mode | ios_base::out) == 0) 1434 this->setstate(ios_base::failbit); 1435} 1436#endif 1437 1438template <class _CharT, class _Traits> 1439inline 1440basic_ofstream<_CharT, _Traits>::basic_ofstream(const string& __s, ios_base::openmode __mode) 1441 : basic_ostream<char_type, traits_type>(&__sb_) 1442{ 1443 if (__sb_.open(__s, __mode | ios_base::out) == 0) 1444 this->setstate(ios_base::failbit); 1445} 1446#endif 1447 1448#ifndef _LIBCPP_CXX03_LANG 1449 1450template <class _CharT, class _Traits> 1451inline 1452basic_ofstream<_CharT, _Traits>::basic_ofstream(basic_ofstream&& __rhs) 1453 : basic_ostream<char_type, traits_type>(_VSTD::move(__rhs)), 1454 __sb_(_VSTD::move(__rhs.__sb_)) 1455{ 1456 this->set_rdbuf(&__sb_); 1457} 1458 1459template <class _CharT, class _Traits> 1460inline 1461basic_ofstream<_CharT, _Traits>& 1462basic_ofstream<_CharT, _Traits>::operator=(basic_ofstream&& __rhs) 1463{ 1464 basic_ostream<char_type, traits_type>::operator=(_VSTD::move(__rhs)); 1465 __sb_ = _VSTD::move(__rhs.__sb_); 1466 return *this; 1467} 1468 1469#endif // _LIBCPP_CXX03_LANG 1470 1471template <class _CharT, class _Traits> 1472inline 1473void 1474basic_ofstream<_CharT, _Traits>::swap(basic_ofstream& __rhs) 1475{ 1476 basic_ostream<char_type, traits_type>::swap(__rhs); 1477 __sb_.swap(__rhs.__sb_); 1478} 1479 1480template <class _CharT, class _Traits> 1481inline _LIBCPP_INLINE_VISIBILITY 1482void 1483swap(basic_ofstream<_CharT, _Traits>& __x, basic_ofstream<_CharT, _Traits>& __y) 1484{ 1485 __x.swap(__y); 1486} 1487 1488template <class _CharT, class _Traits> 1489inline 1490basic_filebuf<_CharT, _Traits>* 1491basic_ofstream<_CharT, _Traits>::rdbuf() const 1492{ 1493 return const_cast<basic_filebuf<char_type, traits_type>*>(&__sb_); 1494} 1495 1496template <class _CharT, class _Traits> 1497inline 1498bool 1499basic_ofstream<_CharT, _Traits>::is_open() const 1500{ 1501 return __sb_.is_open(); 1502} 1503 1504#ifndef _LIBCPP_HAS_NO_GLOBAL_FILESYSTEM_NAMESPACE 1505template <class _CharT, class _Traits> 1506void 1507basic_ofstream<_CharT, _Traits>::open(const char* __s, ios_base::openmode __mode) 1508{ 1509 if (__sb_.open(__s, __mode | ios_base::out)) 1510 this->clear(); 1511 else 1512 this->setstate(ios_base::failbit); 1513} 1514 1515#ifdef _LIBCPP_HAS_OPEN_WITH_WCHAR 1516template <class _CharT, class _Traits> 1517void 1518basic_ofstream<_CharT, _Traits>::open(const wchar_t* __s, ios_base::openmode __mode) 1519{ 1520 if (__sb_.open(__s, __mode | ios_base::out)) 1521 this->clear(); 1522 else 1523 this->setstate(ios_base::failbit); 1524} 1525#endif 1526 1527template <class _CharT, class _Traits> 1528void 1529basic_ofstream<_CharT, _Traits>::open(const string& __s, ios_base::openmode __mode) 1530{ 1531 if (__sb_.open(__s, __mode | ios_base::out)) 1532 this->clear(); 1533 else 1534 this->setstate(ios_base::failbit); 1535} 1536 1537template <class _CharT, class _Traits> 1538void basic_ofstream<_CharT, _Traits>::__open(int __fd, 1539 ios_base::openmode __mode) { 1540 if (__sb_.__open(__fd, __mode | ios_base::out)) 1541 this->clear(); 1542 else 1543 this->setstate(ios_base::failbit); 1544} 1545#endif 1546 1547template <class _CharT, class _Traits> 1548inline 1549void 1550basic_ofstream<_CharT, _Traits>::close() 1551{ 1552 if (__sb_.close() == 0) 1553 this->setstate(ios_base::failbit); 1554} 1555 1556// basic_fstream 1557 1558template <class _CharT, class _Traits> 1559class _LIBCPP_TEMPLATE_VIS basic_fstream 1560 : public basic_iostream<_CharT, _Traits> 1561{ 1562public: 1563 typedef _CharT char_type; 1564 typedef _Traits traits_type; 1565 typedef typename traits_type::int_type int_type; 1566 typedef typename traits_type::pos_type pos_type; 1567 typedef typename traits_type::off_type off_type; 1568 1569 _LIBCPP_INLINE_VISIBILITY 1570 basic_fstream(); 1571#ifndef _LIBCPP_HAS_NO_GLOBAL_FILESYSTEM_NAMESPACE 1572 _LIBCPP_INLINE_VISIBILITY 1573 explicit basic_fstream(const char* __s, ios_base::openmode __mode = ios_base::in | ios_base::out); 1574#ifdef _LIBCPP_HAS_OPEN_WITH_WCHAR 1575 _LIBCPP_INLINE_VISIBILITY 1576 explicit basic_fstream(const wchar_t* __s, ios_base::openmode __mode = ios_base::in | ios_base::out); 1577#endif 1578 _LIBCPP_INLINE_VISIBILITY 1579 explicit basic_fstream(const string& __s, ios_base::openmode __mode = ios_base::in | ios_base::out); 1580 1581#if _LIBCPP_STD_VER >= 17 1582 _LIBCPP_AVAILABILITY_FILESYSTEM _LIBCPP_INLINE_VISIBILITY 1583 explicit basic_fstream(const filesystem::path& __p, ios_base::openmode __mode = ios_base::in | ios_base::out) 1584 : basic_fstream(__p.c_str(), __mode) {} 1585#endif // _LIBCPP_STD_VER >= 17 1586 1587#endif 1588#ifndef _LIBCPP_CXX03_LANG 1589 _LIBCPP_INLINE_VISIBILITY 1590 basic_fstream(basic_fstream&& __rhs); 1591 1592 _LIBCPP_INLINE_VISIBILITY 1593 basic_fstream& operator=(basic_fstream&& __rhs); 1594#endif 1595 _LIBCPP_INLINE_VISIBILITY 1596 void swap(basic_fstream& __rhs); 1597 1598 _LIBCPP_INLINE_VISIBILITY 1599 basic_filebuf<char_type, traits_type>* rdbuf() const; 1600 _LIBCPP_INLINE_VISIBILITY 1601 bool is_open() const; 1602#ifndef _LIBCPP_HAS_NO_GLOBAL_FILESYSTEM_NAMESPACE 1603 void open(const char* __s, ios_base::openmode __mode = ios_base::in | ios_base::out); 1604#ifdef _LIBCPP_HAS_OPEN_WITH_WCHAR 1605 void open(const wchar_t* __s, ios_base::openmode __mode = ios_base::in | ios_base::out); 1606#endif 1607 void open(const string& __s, ios_base::openmode __mode = ios_base::in | ios_base::out); 1608 1609#if _LIBCPP_STD_VER >= 17 1610 _LIBCPP_AVAILABILITY_FILESYSTEM _LIBCPP_INLINE_VISIBILITY 1611 void open(const filesystem::path& __p, ios_base::openmode __mode = ios_base::in|ios_base::out) 1612 { return open(__p.c_str(), __mode); } 1613#endif // _LIBCPP_STD_VER >= 17 1614 1615#endif 1616 _LIBCPP_INLINE_VISIBILITY 1617 void close(); 1618 1619private: 1620 basic_filebuf<char_type, traits_type> __sb_; 1621}; 1622 1623template <class _CharT, class _Traits> 1624inline 1625basic_fstream<_CharT, _Traits>::basic_fstream() 1626 : basic_iostream<char_type, traits_type>(&__sb_) 1627{ 1628} 1629 1630#ifndef _LIBCPP_HAS_NO_GLOBAL_FILESYSTEM_NAMESPACE 1631template <class _CharT, class _Traits> 1632inline 1633basic_fstream<_CharT, _Traits>::basic_fstream(const char* __s, ios_base::openmode __mode) 1634 : basic_iostream<char_type, traits_type>(&__sb_) 1635{ 1636 if (__sb_.open(__s, __mode) == 0) 1637 this->setstate(ios_base::failbit); 1638} 1639 1640#ifdef _LIBCPP_HAS_OPEN_WITH_WCHAR 1641template <class _CharT, class _Traits> 1642inline 1643basic_fstream<_CharT, _Traits>::basic_fstream(const wchar_t* __s, ios_base::openmode __mode) 1644 : basic_iostream<char_type, traits_type>(&__sb_) 1645{ 1646 if (__sb_.open(__s, __mode) == 0) 1647 this->setstate(ios_base::failbit); 1648} 1649#endif 1650 1651template <class _CharT, class _Traits> 1652inline 1653basic_fstream<_CharT, _Traits>::basic_fstream(const string& __s, ios_base::openmode __mode) 1654 : basic_iostream<char_type, traits_type>(&__sb_) 1655{ 1656 if (__sb_.open(__s, __mode) == 0) 1657 this->setstate(ios_base::failbit); 1658} 1659#endif 1660 1661#ifndef _LIBCPP_CXX03_LANG 1662 1663template <class _CharT, class _Traits> 1664inline 1665basic_fstream<_CharT, _Traits>::basic_fstream(basic_fstream&& __rhs) 1666 : basic_iostream<char_type, traits_type>(_VSTD::move(__rhs)), 1667 __sb_(_VSTD::move(__rhs.__sb_)) 1668{ 1669 this->set_rdbuf(&__sb_); 1670} 1671 1672template <class _CharT, class _Traits> 1673inline 1674basic_fstream<_CharT, _Traits>& 1675basic_fstream<_CharT, _Traits>::operator=(basic_fstream&& __rhs) 1676{ 1677 basic_iostream<char_type, traits_type>::operator=(_VSTD::move(__rhs)); 1678 __sb_ = _VSTD::move(__rhs.__sb_); 1679 return *this; 1680} 1681 1682#endif // _LIBCPP_CXX03_LANG 1683 1684template <class _CharT, class _Traits> 1685inline 1686void 1687basic_fstream<_CharT, _Traits>::swap(basic_fstream& __rhs) 1688{ 1689 basic_iostream<char_type, traits_type>::swap(__rhs); 1690 __sb_.swap(__rhs.__sb_); 1691} 1692 1693template <class _CharT, class _Traits> 1694inline _LIBCPP_INLINE_VISIBILITY 1695void 1696swap(basic_fstream<_CharT, _Traits>& __x, basic_fstream<_CharT, _Traits>& __y) 1697{ 1698 __x.swap(__y); 1699} 1700 1701template <class _CharT, class _Traits> 1702inline 1703basic_filebuf<_CharT, _Traits>* 1704basic_fstream<_CharT, _Traits>::rdbuf() const 1705{ 1706 return const_cast<basic_filebuf<char_type, traits_type>*>(&__sb_); 1707} 1708 1709template <class _CharT, class _Traits> 1710inline 1711bool 1712basic_fstream<_CharT, _Traits>::is_open() const 1713{ 1714 return __sb_.is_open(); 1715} 1716 1717#ifndef _LIBCPP_HAS_NO_GLOBAL_FILESYSTEM_NAMESPACE 1718template <class _CharT, class _Traits> 1719void 1720basic_fstream<_CharT, _Traits>::open(const char* __s, ios_base::openmode __mode) 1721{ 1722 if (__sb_.open(__s, __mode)) 1723 this->clear(); 1724 else 1725 this->setstate(ios_base::failbit); 1726} 1727 1728#ifdef _LIBCPP_HAS_OPEN_WITH_WCHAR 1729template <class _CharT, class _Traits> 1730void 1731basic_fstream<_CharT, _Traits>::open(const wchar_t* __s, ios_base::openmode __mode) 1732{ 1733 if (__sb_.open(__s, __mode)) 1734 this->clear(); 1735 else 1736 this->setstate(ios_base::failbit); 1737} 1738#endif 1739 1740template <class _CharT, class _Traits> 1741void 1742basic_fstream<_CharT, _Traits>::open(const string& __s, ios_base::openmode __mode) 1743{ 1744 if (__sb_.open(__s, __mode)) 1745 this->clear(); 1746 else 1747 this->setstate(ios_base::failbit); 1748} 1749#endif 1750 1751template <class _CharT, class _Traits> 1752inline 1753void 1754basic_fstream<_CharT, _Traits>::close() 1755{ 1756 if (__sb_.close() == 0) 1757 this->setstate(ios_base::failbit); 1758} 1759 1760_LIBCPP_END_NAMESPACE_STD 1761 1762_LIBCPP_POP_MACROS 1763 1764#endif // _LIBCPP_FSTREAM 1765