1// -*- C++ -*- 2//===------------------------- fstream ------------------------------------===// 3// 4// The LLVM Compiler Infrastructure 5// 6// This file is dual licensed under the MIT and the University of Illinois Open 7// Source Licenses. See LICENSE.TXT for details. 8// 9//===----------------------------------------------------------------------===// 10 11#ifndef _LIBCPP_FSTREAM 12#define _LIBCPP_FSTREAM 13 14/* 15 fstream synopsis 16 17template <class charT, class traits = char_traits<charT> > 18class basic_filebuf 19 : public basic_streambuf<charT, traits> 20{ 21public: 22 typedef charT char_type; 23 typedef traits traits_type; 24 typedef typename traits_type::int_type int_type; 25 typedef typename traits_type::pos_type pos_type; 26 typedef typename traits_type::off_type off_type; 27 28 // 27.9.1.2 Constructors/destructor: 29 basic_filebuf(); 30 basic_filebuf(basic_filebuf&& rhs); 31 virtual ~basic_filebuf(); 32 33 // 27.9.1.3 Assign/swap: 34 basic_filebuf& operator=(basic_filebuf&& rhs); 35 void swap(basic_filebuf& rhs); 36 37 // 27.9.1.4 Members: 38 bool is_open() const; 39 basic_filebuf* open(const char* s, ios_base::openmode mode); 40 basic_filebuf* open(const string& s, ios_base::openmode mode); 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 basic_ifstream(basic_ifstream&& rhs); 81 82 basic_ifstream& operator=(basic_ifstream&& rhs); 83 void swap(basic_ifstream& rhs); 84 85 basic_filebuf<char_type, traits_type>* rdbuf() const; 86 bool is_open() const; 87 void open(const char* s, ios_base::openmode mode = ios_base::in); 88 void open(const string& s, ios_base::openmode mode = ios_base::in); 89 void close(); 90}; 91 92template <class charT, class traits> 93 void 94 swap(basic_ifstream<charT, traits>& x, basic_ifstream<charT, traits>& y); 95 96typedef basic_ifstream<char> ifstream; 97typedef basic_ifstream<wchar_t> wifstream; 98 99template <class charT, class traits = char_traits<charT> > 100class basic_ofstream 101 : public basic_ostream<charT,traits> 102{ 103public: 104 typedef charT char_type; 105 typedef traits traits_type; 106 typedef typename traits_type::int_type int_type; 107 typedef typename traits_type::pos_type pos_type; 108 typedef typename traits_type::off_type off_type; 109 110 basic_ofstream(); 111 explicit basic_ofstream(const char* s, ios_base::openmode mode = ios_base::out); 112 explicit basic_ofstream(const string& s, ios_base::openmode mode = ios_base::out); 113 basic_ofstream(basic_ofstream&& rhs); 114 115 basic_ofstream& operator=(basic_ofstream&& rhs); 116 void swap(basic_ofstream& rhs); 117 118 basic_filebuf<char_type, traits_type>* rdbuf() const; 119 bool is_open() const; 120 void open(const char* s, ios_base::openmode mode = ios_base::out); 121 void open(const string& s, ios_base::openmode mode = ios_base::out); 122 void close(); 123}; 124 125template <class charT, class traits> 126 void 127 swap(basic_ofstream<charT, traits>& x, basic_ofstream<charT, traits>& y); 128 129typedef basic_ofstream<char> ofstream; 130typedef basic_ofstream<wchar_t> wofstream; 131 132template <class charT, class traits=char_traits<charT> > 133class basic_fstream 134 : public basic_iostream<charT,traits> 135{ 136public: 137 typedef charT char_type; 138 typedef traits traits_type; 139 typedef typename traits_type::int_type int_type; 140 typedef typename traits_type::pos_type pos_type; 141 typedef typename traits_type::off_type off_type; 142 143 basic_fstream(); 144 explicit basic_fstream(const char* s, ios_base::openmode mode = ios_base::in|ios_base::out); 145 explicit basic_fstream(const string& s, ios_base::openmode mode = ios_base::in|ios_base::out); 146 basic_fstream(basic_fstream&& rhs); 147 148 basic_fstream& operator=(basic_fstream&& rhs); 149 void swap(basic_fstream& rhs); 150 151 basic_filebuf<char_type, traits_type>* rdbuf() const; 152 bool is_open() const; 153 void open(const char* s, ios_base::openmode mode = ios_base::in|ios_base::out); 154 void open(const string& s, ios_base::openmode mode = ios_base::in|ios_base::out); 155 void close(); 156}; 157 158template <class charT, class traits> 159 void swap(basic_fstream<charT, traits>& x, basic_fstream<charT, traits>& y); 160 161typedef basic_fstream<char> fstream; 162typedef basic_fstream<wchar_t> wfstream; 163 164} // std 165 166*/ 167 168#include <__config> 169#include <ostream> 170#include <istream> 171#include <__locale> 172#include <cstdio> 173 174#include <__undef_min_max> 175 176#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 177#pragma GCC system_header 178#endif 179 180_LIBCPP_BEGIN_NAMESPACE_STD 181 182template <class _CharT, class _Traits> 183class _LIBCPP_TYPE_VIS_ONLY basic_filebuf 184 : public basic_streambuf<_CharT, _Traits> 185{ 186public: 187 typedef _CharT char_type; 188 typedef _Traits traits_type; 189 typedef typename traits_type::int_type int_type; 190 typedef typename traits_type::pos_type pos_type; 191 typedef typename traits_type::off_type off_type; 192 typedef typename traits_type::state_type state_type; 193 194 // 27.9.1.2 Constructors/destructor: 195 basic_filebuf(); 196#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 197 basic_filebuf(basic_filebuf&& __rhs); 198#endif 199 virtual ~basic_filebuf(); 200 201 // 27.9.1.3 Assign/swap: 202#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 203 basic_filebuf& operator=(basic_filebuf&& __rhs); 204#endif 205 void swap(basic_filebuf& __rhs); 206 207 // 27.9.1.4 Members: 208 bool is_open() const; 209 basic_filebuf* open(const char* __s, ios_base::openmode __mode); 210 basic_filebuf* open(const string& __s, ios_base::openmode __mode); 211 basic_filebuf* close(); 212 213protected: 214 // 27.9.1.5 Overridden virtual functions: 215 virtual int_type underflow(); 216 virtual int_type pbackfail(int_type __c = traits_type::eof()); 217 virtual int_type overflow (int_type __c = traits_type::eof()); 218 virtual basic_streambuf<char_type, traits_type>* setbuf(char_type* __s, streamsize __n); 219 virtual pos_type seekoff(off_type __off, ios_base::seekdir __way, 220 ios_base::openmode __wch = ios_base::in | ios_base::out); 221 virtual pos_type seekpos(pos_type __sp, 222 ios_base::openmode __wch = ios_base::in | ios_base::out); 223 virtual int sync(); 224 virtual void imbue(const locale& __loc); 225 226private: 227 char* __extbuf_; 228 const char* __extbufnext_; 229 const char* __extbufend_; 230 char __extbuf_min_[8]; 231 size_t __ebs_; 232 char_type* __intbuf_; 233 size_t __ibs_; 234 FILE* __file_; 235 const codecvt<char_type, char, state_type>* __cv_; 236 state_type __st_; 237 state_type __st_last_; 238 ios_base::openmode __om_; 239 ios_base::openmode __cm_; 240 bool __owns_eb_; 241 bool __owns_ib_; 242 bool __always_noconv_; 243 244 bool __read_mode(); 245 void __write_mode(); 246}; 247 248template <class _CharT, class _Traits> 249basic_filebuf<_CharT, _Traits>::basic_filebuf() 250 : __extbuf_(0), 251 __extbufnext_(0), 252 __extbufend_(0), 253 __ebs_(0), 254 __intbuf_(0), 255 __ibs_(0), 256 __file_(0), 257 __cv_(nullptr), 258 __st_(), 259 __st_last_(), 260 __om_(0), 261 __cm_(0), 262 __owns_eb_(false), 263 __owns_ib_(false), 264 __always_noconv_(false) 265{ 266 if (has_facet<codecvt<char_type, char, state_type> >(this->getloc())) 267 { 268 __cv_ = &use_facet<codecvt<char_type, char, state_type> >(this->getloc()); 269 __always_noconv_ = __cv_->always_noconv(); 270 } 271 setbuf(0, 4096); 272} 273 274#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 275 276template <class _CharT, class _Traits> 277basic_filebuf<_CharT, _Traits>::basic_filebuf(basic_filebuf&& __rhs) 278 : basic_streambuf<_CharT, _Traits>(__rhs) 279{ 280 if (__rhs.__extbuf_ == __rhs.__extbuf_min_) 281 { 282 __extbuf_ = __extbuf_min_; 283 __extbufnext_ = __extbuf_ + (__rhs.__extbufnext_ - __rhs.__extbuf_); 284 __extbufend_ = __extbuf_ + (__rhs.__extbufend_ - __rhs.__extbuf_); 285 } 286 else 287 { 288 __extbuf_ = __rhs.__extbuf_; 289 __extbufnext_ = __rhs.__extbufnext_; 290 __extbufend_ = __rhs.__extbufend_; 291 } 292 __ebs_ = __rhs.__ebs_; 293 __intbuf_ = __rhs.__intbuf_; 294 __ibs_ = __rhs.__ibs_; 295 __file_ = __rhs.__file_; 296 __cv_ = __rhs.__cv_; 297 __st_ = __rhs.__st_; 298 __st_last_ = __rhs.__st_last_; 299 __om_ = __rhs.__om_; 300 __cm_ = __rhs.__cm_; 301 __owns_eb_ = __rhs.__owns_eb_; 302 __owns_ib_ = __rhs.__owns_ib_; 303 __always_noconv_ = __rhs.__always_noconv_; 304 if (__rhs.pbase()) 305 { 306 if (__rhs.pbase() == __rhs.__intbuf_) 307 this->setp(__intbuf_, __intbuf_ + (__rhs. epptr() - __rhs.pbase())); 308 else 309 this->setp((char_type*)__extbuf_, 310 (char_type*)__extbuf_ + (__rhs. epptr() - __rhs.pbase())); 311 this->pbump(__rhs. pptr() - __rhs.pbase()); 312 } 313 else if (__rhs.eback()) 314 { 315 if (__rhs.eback() == __rhs.__intbuf_) 316 this->setg(__intbuf_, __intbuf_ + (__rhs.gptr() - __rhs.eback()), 317 __intbuf_ + (__rhs.egptr() - __rhs.eback())); 318 else 319 this->setg((char_type*)__extbuf_, 320 (char_type*)__extbuf_ + (__rhs.gptr() - __rhs.eback()), 321 (char_type*)__extbuf_ + (__rhs.egptr() - __rhs.eback())); 322 } 323 __rhs.__extbuf_ = 0; 324 __rhs.__extbufnext_ = 0; 325 __rhs.__extbufend_ = 0; 326 __rhs.__ebs_ = 0; 327 __rhs.__intbuf_ = 0; 328 __rhs.__ibs_ = 0; 329 __rhs.__file_ = 0; 330 __rhs.__st_ = state_type(); 331 __rhs.__st_last_ = state_type(); 332 __rhs.__om_ = 0; 333 __rhs.__cm_ = 0; 334 __rhs.__owns_eb_ = false; 335 __rhs.__owns_ib_ = false; 336 __rhs.setg(0, 0, 0); 337 __rhs.setp(0, 0); 338} 339 340template <class _CharT, class _Traits> 341inline _LIBCPP_INLINE_VISIBILITY 342basic_filebuf<_CharT, _Traits>& 343basic_filebuf<_CharT, _Traits>::operator=(basic_filebuf&& __rhs) 344{ 345 close(); 346 swap(__rhs); 347 return *this; 348} 349 350#endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES 351 352template <class _CharT, class _Traits> 353basic_filebuf<_CharT, _Traits>::~basic_filebuf() 354{ 355#ifndef _LIBCPP_NO_EXCEPTIONS 356 try 357 { 358#endif // _LIBCPP_NO_EXCEPTIONS 359 close(); 360#ifndef _LIBCPP_NO_EXCEPTIONS 361 } 362 catch (...) 363 { 364 } 365#endif // _LIBCPP_NO_EXCEPTIONS 366 if (__owns_eb_) 367 delete [] __extbuf_; 368 if (__owns_ib_) 369 delete [] __intbuf_; 370} 371 372template <class _CharT, class _Traits> 373void 374basic_filebuf<_CharT, _Traits>::swap(basic_filebuf& __rhs) 375{ 376 basic_streambuf<char_type, traits_type>::swap(__rhs); 377 if (__extbuf_ != __extbuf_min_ && __rhs.__extbuf_ != __rhs.__extbuf_min_) 378 { 379 _VSTD::swap(__extbuf_, __rhs.__extbuf_); 380 _VSTD::swap(__extbufnext_, __rhs.__extbufnext_); 381 _VSTD::swap(__extbufend_, __rhs.__extbufend_); 382 } 383 else 384 { 385 ptrdiff_t __ln = __extbufnext_ - __extbuf_; 386 ptrdiff_t __le = __extbufend_ - __extbuf_; 387 ptrdiff_t __rn = __rhs.__extbufnext_ - __rhs.__extbuf_; 388 ptrdiff_t __re = __rhs.__extbufend_ - __rhs.__extbuf_; 389 if (__extbuf_ == __extbuf_min_ && __rhs.__extbuf_ != __rhs.__extbuf_min_) 390 { 391 __extbuf_ = __rhs.__extbuf_; 392 __rhs.__extbuf_ = __rhs.__extbuf_min_; 393 } 394 else if (__extbuf_ != __extbuf_min_ && __rhs.__extbuf_ == __rhs.__extbuf_min_) 395 { 396 __rhs.__extbuf_ = __extbuf_; 397 __extbuf_ = __extbuf_min_; 398 } 399 __extbufnext_ = __extbuf_ + __rn; 400 __extbufend_ = __extbuf_ + __re; 401 __rhs.__extbufnext_ = __rhs.__extbuf_ + __ln; 402 __rhs.__extbufend_ = __rhs.__extbuf_ + __le; 403 } 404 _VSTD::swap(__ebs_, __rhs.__ebs_); 405 _VSTD::swap(__intbuf_, __rhs.__intbuf_); 406 _VSTD::swap(__ibs_, __rhs.__ibs_); 407 _VSTD::swap(__file_, __rhs.__file_); 408 _VSTD::swap(__cv_, __rhs.__cv_); 409 _VSTD::swap(__st_, __rhs.__st_); 410 _VSTD::swap(__st_last_, __rhs.__st_last_); 411 _VSTD::swap(__om_, __rhs.__om_); 412 _VSTD::swap(__cm_, __rhs.__cm_); 413 _VSTD::swap(__owns_eb_, __rhs.__owns_eb_); 414 _VSTD::swap(__owns_ib_, __rhs.__owns_ib_); 415 _VSTD::swap(__always_noconv_, __rhs.__always_noconv_); 416 if (this->eback() == (char_type*)__rhs.__extbuf_min_) 417 { 418 ptrdiff_t __n = this->gptr() - this->eback(); 419 ptrdiff_t __e = this->egptr() - this->eback(); 420 this->setg((char_type*)__extbuf_min_, 421 (char_type*)__extbuf_min_ + __n, 422 (char_type*)__extbuf_min_ + __e); 423 } 424 else if (this->pbase() == (char_type*)__rhs.__extbuf_min_) 425 { 426 ptrdiff_t __n = this->pptr() - this->pbase(); 427 ptrdiff_t __e = this->epptr() - this->pbase(); 428 this->setp((char_type*)__extbuf_min_, 429 (char_type*)__extbuf_min_ + __e); 430 this->pbump(__n); 431 } 432 if (__rhs.eback() == (char_type*)__extbuf_min_) 433 { 434 ptrdiff_t __n = __rhs.gptr() - __rhs.eback(); 435 ptrdiff_t __e = __rhs.egptr() - __rhs.eback(); 436 __rhs.setg((char_type*)__rhs.__extbuf_min_, 437 (char_type*)__rhs.__extbuf_min_ + __n, 438 (char_type*)__rhs.__extbuf_min_ + __e); 439 } 440 else if (__rhs.pbase() == (char_type*)__extbuf_min_) 441 { 442 ptrdiff_t __n = __rhs.pptr() - __rhs.pbase(); 443 ptrdiff_t __e = __rhs.epptr() - __rhs.pbase(); 444 __rhs.setp((char_type*)__rhs.__extbuf_min_, 445 (char_type*)__rhs.__extbuf_min_ + __e); 446 __rhs.pbump(__n); 447 } 448} 449 450template <class _CharT, class _Traits> 451inline _LIBCPP_INLINE_VISIBILITY 452void 453swap(basic_filebuf<_CharT, _Traits>& __x, basic_filebuf<_CharT, _Traits>& __y) 454{ 455 __x.swap(__y); 456} 457 458template <class _CharT, class _Traits> 459inline _LIBCPP_INLINE_VISIBILITY 460bool 461basic_filebuf<_CharT, _Traits>::is_open() const 462{ 463 return __file_ != 0; 464} 465 466template <class _CharT, class _Traits> 467basic_filebuf<_CharT, _Traits>* 468basic_filebuf<_CharT, _Traits>::open(const char* __s, ios_base::openmode __mode) 469{ 470 basic_filebuf<_CharT, _Traits>* __rt = 0; 471 if (__file_ == 0) 472 { 473 __rt = this; 474 const char* __mdstr; 475 switch (__mode & ~ios_base::ate) 476 { 477 case ios_base::out: 478 case ios_base::out | ios_base::trunc: 479 __mdstr = "w"; 480 break; 481 case ios_base::out | ios_base::app: 482 case ios_base::app: 483 __mdstr = "a"; 484 break; 485 case ios_base::in: 486 __mdstr = "r"; 487 break; 488 case ios_base::in | ios_base::out: 489 __mdstr = "r+"; 490 break; 491 case ios_base::in | ios_base::out | ios_base::trunc: 492 __mdstr = "w+"; 493 break; 494 case ios_base::in | ios_base::out | ios_base::app: 495 case ios_base::in | ios_base::app: 496 __mdstr = "a+"; 497 break; 498 case ios_base::out | ios_base::binary: 499 case ios_base::out | ios_base::trunc | ios_base::binary: 500 __mdstr = "wb"; 501 break; 502 case ios_base::out | ios_base::app | ios_base::binary: 503 case ios_base::app | ios_base::binary: 504 __mdstr = "ab"; 505 break; 506 case ios_base::in | ios_base::binary: 507 __mdstr = "rb"; 508 break; 509 case ios_base::in | ios_base::out | ios_base::binary: 510 __mdstr = "r+b"; 511 break; 512 case ios_base::in | ios_base::out | ios_base::trunc | ios_base::binary: 513 __mdstr = "w+b"; 514 break; 515 case ios_base::in | ios_base::out | ios_base::app | ios_base::binary: 516 case ios_base::in | ios_base::app | ios_base::binary: 517 __mdstr = "a+b"; 518 break; 519 default: 520 __rt = 0; 521 break; 522 } 523 if (__rt) 524 { 525 __file_ = fopen(__s, __mdstr); 526 if (__file_) 527 { 528 __om_ = __mode; 529 if (__mode & ios_base::ate) 530 { 531 if (fseek(__file_, 0, SEEK_END)) 532 { 533 fclose(__file_); 534 __file_ = 0; 535 __rt = 0; 536 } 537 } 538 } 539 else 540 __rt = 0; 541 } 542 } 543 return __rt; 544} 545 546template <class _CharT, class _Traits> 547inline _LIBCPP_INLINE_VISIBILITY 548basic_filebuf<_CharT, _Traits>* 549basic_filebuf<_CharT, _Traits>::open(const string& __s, ios_base::openmode __mode) 550{ 551 return open(__s.c_str(), __mode); 552} 553 554template <class _CharT, class _Traits> 555basic_filebuf<_CharT, _Traits>* 556basic_filebuf<_CharT, _Traits>::close() 557{ 558 basic_filebuf<_CharT, _Traits>* __rt = 0; 559 if (__file_) 560 { 561 __rt = this; 562 unique_ptr<FILE, int(*)(FILE*)> __h(__file_, fclose); 563 if (sync()) 564 __rt = 0; 565 if (fclose(__h.release()) == 0) 566 __file_ = 0; 567 else 568 __rt = 0; 569 } 570 return __rt; 571} 572 573template <class _CharT, class _Traits> 574typename basic_filebuf<_CharT, _Traits>::int_type 575basic_filebuf<_CharT, _Traits>::underflow() 576{ 577 if (__file_ == 0) 578 return traits_type::eof(); 579 bool __initial = __read_mode(); 580 char_type __1buf; 581 if (this->gptr() == 0) 582 this->setg(&__1buf, &__1buf+1, &__1buf+1); 583 const size_t __unget_sz = __initial ? 0 : min<size_t>((this->egptr() - this->eback()) / 2, 4); 584 int_type __c = traits_type::eof(); 585 if (this->gptr() == this->egptr()) 586 { 587 memmove(this->eback(), this->egptr() - __unget_sz, __unget_sz * sizeof(char_type)); 588 if (__always_noconv_) 589 { 590 size_t __nmemb = static_cast<size_t>(this->egptr() - this->eback() - __unget_sz); 591 __nmemb = fread(this->eback() + __unget_sz, 1, __nmemb, __file_); 592 if (__nmemb != 0) 593 { 594 this->setg(this->eback(), 595 this->eback() + __unget_sz, 596 this->eback() + __unget_sz + __nmemb); 597 __c = traits_type::to_int_type(*this->gptr()); 598 } 599 } 600 else 601 { 602 memmove(__extbuf_, __extbufnext_, __extbufend_ - __extbufnext_); 603 __extbufnext_ = __extbuf_ + (__extbufend_ - __extbufnext_); 604 __extbufend_ = __extbuf_ + (__extbuf_ == __extbuf_min_ ? sizeof(__extbuf_min_) : __ebs_); 605 size_t __nmemb = _VSTD::min(static_cast<size_t>(__ibs_ - __unget_sz), 606 static_cast<size_t>(__extbufend_ - __extbufnext_)); 607 codecvt_base::result __r; 608 __st_last_ = __st_; 609 size_t __nr = fread((void*)__extbufnext_, 1, __nmemb, __file_); 610 if (__nr != 0) 611 { 612#ifndef _LIBCPP_NO_EXCEPTIONS 613 if (!__cv_) 614 throw bad_cast(); 615#endif 616 __extbufend_ = __extbufnext_ + __nr; 617 char_type* __inext; 618 __r = __cv_->in(__st_, __extbuf_, __extbufend_, __extbufnext_, 619 this->eback() + __unget_sz, 620 this->eback() + __ibs_, __inext); 621 if (__r == codecvt_base::noconv) 622 { 623 this->setg((char_type*)__extbuf_, (char_type*)__extbuf_, (char_type*)__extbufend_); 624 __c = traits_type::to_int_type(*this->gptr()); 625 } 626 else if (__inext != this->eback() + __unget_sz) 627 { 628 this->setg(this->eback(), this->eback() + __unget_sz, __inext); 629 __c = traits_type::to_int_type(*this->gptr()); 630 } 631 } 632 } 633 } 634 else 635 __c = traits_type::to_int_type(*this->gptr()); 636 if (this->eback() == &__1buf) 637 this->setg(0, 0, 0); 638 return __c; 639} 640 641template <class _CharT, class _Traits> 642typename basic_filebuf<_CharT, _Traits>::int_type 643basic_filebuf<_CharT, _Traits>::pbackfail(int_type __c) 644{ 645 if (__file_ && this->eback() < this->gptr()) 646 { 647 if (traits_type::eq_int_type(__c, traits_type::eof())) 648 { 649 this->gbump(-1); 650 return traits_type::not_eof(__c); 651 } 652 if ((__om_ & ios_base::out) || 653 traits_type::eq(traits_type::to_char_type(__c), this->gptr()[-1])) 654 { 655 this->gbump(-1); 656 *this->gptr() = traits_type::to_char_type(__c); 657 return __c; 658 } 659 } 660 return traits_type::eof(); 661} 662 663template <class _CharT, class _Traits> 664typename basic_filebuf<_CharT, _Traits>::int_type 665basic_filebuf<_CharT, _Traits>::overflow(int_type __c) 666{ 667 if (__file_ == 0) 668 return traits_type::eof(); 669 __write_mode(); 670 char_type __1buf; 671 char_type* __pb_save = this->pbase(); 672 char_type* __epb_save = this->epptr(); 673 if (!traits_type::eq_int_type(__c, traits_type::eof())) 674 { 675 if (this->pptr() == 0) 676 this->setp(&__1buf, &__1buf+1); 677 *this->pptr() = traits_type::to_char_type(__c); 678 this->pbump(1); 679 } 680 if (this->pptr() != this->pbase()) 681 { 682 if (__always_noconv_) 683 { 684 size_t __nmemb = static_cast<size_t>(this->pptr() - this->pbase()); 685 if (fwrite(this->pbase(), sizeof(char_type), __nmemb, __file_) != __nmemb) 686 return traits_type::eof(); 687 } 688 else 689 { 690 char* __extbe = __extbuf_; 691 codecvt_base::result __r; 692 do 693 { 694#ifndef _LIBCPP_NO_EXCEPTIONS 695 if (!__cv_) 696 throw bad_cast(); 697#endif 698 const char_type* __e; 699 __r = __cv_->out(__st_, this->pbase(), this->pptr(), __e, 700 __extbuf_, __extbuf_ + __ebs_, __extbe); 701 if (__e == this->pbase()) 702 return traits_type::eof(); 703 if (__r == codecvt_base::noconv) 704 { 705 size_t __nmemb = static_cast<size_t>(this->pptr() - this->pbase()); 706 if (fwrite(this->pbase(), 1, __nmemb, __file_) != __nmemb) 707 return traits_type::eof(); 708 } 709 else if (__r == codecvt_base::ok || __r == codecvt_base::partial) 710 { 711 size_t __nmemb = static_cast<size_t>(__extbe - __extbuf_); 712 if (fwrite(__extbuf_, 1, __nmemb, __file_) != __nmemb) 713 return traits_type::eof(); 714 if (__r == codecvt_base::partial) 715 { 716 this->setp((char_type*)__e, this->pptr()); 717 this->pbump(this->epptr() - this->pbase()); 718 } 719 } 720 else 721 return traits_type::eof(); 722 } while (__r == codecvt_base::partial); 723 } 724 this->setp(__pb_save, __epb_save); 725 } 726 return traits_type::not_eof(__c); 727} 728 729template <class _CharT, class _Traits> 730basic_streambuf<_CharT, _Traits>* 731basic_filebuf<_CharT, _Traits>::setbuf(char_type* __s, streamsize __n) 732{ 733 this->setg(0, 0, 0); 734 this->setp(0, 0); 735 if (__owns_eb_) 736 delete [] __extbuf_; 737 if (__owns_ib_) 738 delete [] __intbuf_; 739 __ebs_ = __n; 740 if (__ebs_ > sizeof(__extbuf_min_)) 741 { 742 if (__always_noconv_ && __s) 743 { 744 __extbuf_ = (char*)__s; 745 __owns_eb_ = false; 746 } 747 else 748 { 749 __extbuf_ = new char[__ebs_]; 750 __owns_eb_ = true; 751 } 752 } 753 else 754 { 755 __extbuf_ = __extbuf_min_; 756 __ebs_ = sizeof(__extbuf_min_); 757 __owns_eb_ = false; 758 } 759 if (!__always_noconv_) 760 { 761 __ibs_ = max<streamsize>(__n, sizeof(__extbuf_min_)); 762 if (__s && __ibs_ >= sizeof(__extbuf_min_)) 763 { 764 __intbuf_ = __s; 765 __owns_ib_ = false; 766 } 767 else 768 { 769 __intbuf_ = new char_type[__ibs_]; 770 __owns_ib_ = true; 771 } 772 } 773 else 774 { 775 __ibs_ = 0; 776 __intbuf_ = 0; 777 __owns_ib_ = false; 778 } 779 return this; 780} 781 782template <class _CharT, class _Traits> 783typename basic_filebuf<_CharT, _Traits>::pos_type 784basic_filebuf<_CharT, _Traits>::seekoff(off_type __off, ios_base::seekdir __way, 785 ios_base::openmode) 786{ 787#ifndef _LIBCPP_NO_EXCEPTIONS 788 if (!__cv_) 789 throw bad_cast(); 790#endif 791 int __width = __cv_->encoding(); 792 if (__file_ == 0 || (__width <= 0 && __off != 0) || sync()) 793 return pos_type(off_type(-1)); 794 // __width > 0 || __off == 0 795 int __whence; 796 switch (__way) 797 { 798 case ios_base::beg: 799 __whence = SEEK_SET; 800 break; 801 case ios_base::cur: 802 __whence = SEEK_CUR; 803 break; 804 case ios_base::end: 805 __whence = SEEK_END; 806 break; 807 default: 808 return pos_type(off_type(-1)); 809 } 810#if _WIN32 811 if (fseek(__file_, __width > 0 ? __width * __off : 0, __whence)) 812 return pos_type(off_type(-1)); 813 pos_type __r = ftell(__file_); 814#else 815 if (fseeko(__file_, __width > 0 ? __width * __off : 0, __whence)) 816 return pos_type(off_type(-1)); 817 pos_type __r = ftello(__file_); 818#endif 819 __r.state(__st_); 820 return __r; 821} 822 823template <class _CharT, class _Traits> 824typename basic_filebuf<_CharT, _Traits>::pos_type 825basic_filebuf<_CharT, _Traits>::seekpos(pos_type __sp, ios_base::openmode) 826{ 827 if (__file_ == 0 || sync()) 828 return pos_type(off_type(-1)); 829#if _WIN32 830 if (fseek(__file_, __sp, SEEK_SET)) 831 return pos_type(off_type(-1)); 832#else 833 if (fseeko(__file_, __sp, SEEK_SET)) 834 return pos_type(off_type(-1)); 835#endif 836 __st_ = __sp.state(); 837 return __sp; 838} 839 840template <class _CharT, class _Traits> 841int 842basic_filebuf<_CharT, _Traits>::sync() 843{ 844 if (__file_ == 0) 845 return 0; 846#ifndef _LIBCPP_NO_EXCEPTIONS 847 if (!__cv_) 848 throw bad_cast(); 849#endif 850 if (__cm_ & ios_base::out) 851 { 852 if (this->pptr() != this->pbase()) 853 if (overflow() == traits_type::eof()) 854 return -1; 855 codecvt_base::result __r; 856 do 857 { 858 char* __extbe; 859 __r = __cv_->unshift(__st_, __extbuf_, __extbuf_ + __ebs_, __extbe); 860 size_t __nmemb = static_cast<size_t>(__extbe - __extbuf_); 861 if (fwrite(__extbuf_, 1, __nmemb, __file_) != __nmemb) 862 return -1; 863 } while (__r == codecvt_base::partial); 864 if (__r == codecvt_base::error) 865 return -1; 866 if (fflush(__file_)) 867 return -1; 868 } 869 else if (__cm_ & ios_base::in) 870 { 871 off_type __c; 872 state_type __state = __st_last_; 873 bool __update_st = false; 874 if (__always_noconv_) 875 __c = this->egptr() - this->gptr(); 876 else 877 { 878 int __width = __cv_->encoding(); 879 __c = __extbufend_ - __extbufnext_; 880 if (__width > 0) 881 __c += __width * (this->egptr() - this->gptr()); 882 else 883 { 884 if (this->gptr() != this->egptr()) 885 { 886 const int __off = __cv_->length(__state, __extbuf_, 887 __extbufnext_, 888 this->gptr() - this->eback()); 889 __c += __extbufnext_ - __extbuf_ - __off; 890 __update_st = true; 891 } 892 } 893 } 894#if _WIN32 895 if (fseek(__file_, -__c, SEEK_CUR)) 896 return -1; 897#else 898 if (fseeko(__file_, -__c, SEEK_CUR)) 899 return -1; 900#endif 901 if (__update_st) 902 __st_ = __state; 903 __extbufnext_ = __extbufend_ = __extbuf_; 904 this->setg(0, 0, 0); 905 __cm_ = 0; 906 } 907 return 0; 908} 909 910template <class _CharT, class _Traits> 911void 912basic_filebuf<_CharT, _Traits>::imbue(const locale& __loc) 913{ 914 sync(); 915 __cv_ = &use_facet<codecvt<char_type, char, state_type> >(__loc); 916 bool __old_anc = __always_noconv_; 917 __always_noconv_ = __cv_->always_noconv(); 918 if (__old_anc != __always_noconv_) 919 { 920 this->setg(0, 0, 0); 921 this->setp(0, 0); 922 // invariant, char_type is char, else we couldn't get here 923 if (__always_noconv_) // need to dump __intbuf_ 924 { 925 if (__owns_eb_) 926 delete [] __extbuf_; 927 __owns_eb_ = __owns_ib_; 928 __ebs_ = __ibs_; 929 __extbuf_ = (char*)__intbuf_; 930 __ibs_ = 0; 931 __intbuf_ = 0; 932 __owns_ib_ = false; 933 } 934 else // need to obtain an __intbuf_. 935 { // If __extbuf_ is user-supplied, use it, else new __intbuf_ 936 if (!__owns_eb_ && __extbuf_ != __extbuf_min_) 937 { 938 __ibs_ = __ebs_; 939 __intbuf_ = (char_type*)__extbuf_; 940 __owns_ib_ = false; 941 __extbuf_ = new char[__ebs_]; 942 __owns_eb_ = true; 943 } 944 else 945 { 946 __ibs_ = __ebs_; 947 __intbuf_ = new char_type[__ibs_]; 948 __owns_ib_ = true; 949 } 950 } 951 } 952} 953 954template <class _CharT, class _Traits> 955bool 956basic_filebuf<_CharT, _Traits>::__read_mode() 957{ 958 if (!(__cm_ & ios_base::in)) 959 { 960 this->setp(0, 0); 961 if (__always_noconv_) 962 this->setg((char_type*)__extbuf_, 963 (char_type*)__extbuf_ + __ebs_, 964 (char_type*)__extbuf_ + __ebs_); 965 else 966 this->setg(__intbuf_, __intbuf_ + __ibs_, __intbuf_ + __ibs_); 967 __cm_ = ios_base::in; 968 return true; 969 } 970 return false; 971} 972 973template <class _CharT, class _Traits> 974void 975basic_filebuf<_CharT, _Traits>::__write_mode() 976{ 977 if (!(__cm_ & ios_base::out)) 978 { 979 this->setg(0, 0, 0); 980 if (__ebs_ > sizeof(__extbuf_min_)) 981 { 982 if (__always_noconv_) 983 this->setp((char_type*)__extbuf_, 984 (char_type*)__extbuf_ + (__ebs_ - 1)); 985 else 986 this->setp(__intbuf_, __intbuf_ + (__ibs_ - 1)); 987 } 988 else 989 this->setp(0, 0); 990 __cm_ = ios_base::out; 991 } 992} 993 994// basic_ifstream 995 996template <class _CharT, class _Traits> 997class _LIBCPP_TYPE_VIS_ONLY basic_ifstream 998 : public basic_istream<_CharT, _Traits> 999{ 1000public: 1001 typedef _CharT char_type; 1002 typedef _Traits traits_type; 1003 typedef typename traits_type::int_type int_type; 1004 typedef typename traits_type::pos_type pos_type; 1005 typedef typename traits_type::off_type off_type; 1006 1007 basic_ifstream(); 1008 explicit basic_ifstream(const char* __s, ios_base::openmode __mode = ios_base::in); 1009 explicit basic_ifstream(const string& __s, ios_base::openmode __mode = ios_base::in); 1010#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 1011 basic_ifstream(basic_ifstream&& __rhs); 1012#endif 1013 1014#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 1015 basic_ifstream& operator=(basic_ifstream&& __rhs); 1016#endif 1017 void swap(basic_ifstream& __rhs); 1018 1019 basic_filebuf<char_type, traits_type>* rdbuf() const; 1020 bool is_open() const; 1021 void open(const char* __s, ios_base::openmode __mode = ios_base::in); 1022 void open(const string& __s, ios_base::openmode __mode = ios_base::in); 1023 void close(); 1024 1025private: 1026 basic_filebuf<char_type, traits_type> __sb_; 1027}; 1028 1029template <class _CharT, class _Traits> 1030inline _LIBCPP_INLINE_VISIBILITY 1031basic_ifstream<_CharT, _Traits>::basic_ifstream() 1032 : basic_istream<char_type, traits_type>(&__sb_) 1033{ 1034} 1035 1036template <class _CharT, class _Traits> 1037inline _LIBCPP_INLINE_VISIBILITY 1038basic_ifstream<_CharT, _Traits>::basic_ifstream(const char* __s, ios_base::openmode __mode) 1039 : basic_istream<char_type, traits_type>(&__sb_) 1040{ 1041 if (__sb_.open(__s, __mode | ios_base::in) == 0) 1042 this->setstate(ios_base::failbit); 1043} 1044 1045template <class _CharT, class _Traits> 1046inline _LIBCPP_INLINE_VISIBILITY 1047basic_ifstream<_CharT, _Traits>::basic_ifstream(const string& __s, ios_base::openmode __mode) 1048 : basic_istream<char_type, traits_type>(&__sb_) 1049{ 1050 if (__sb_.open(__s, __mode | ios_base::in) == 0) 1051 this->setstate(ios_base::failbit); 1052} 1053 1054#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 1055 1056template <class _CharT, class _Traits> 1057inline _LIBCPP_INLINE_VISIBILITY 1058basic_ifstream<_CharT, _Traits>::basic_ifstream(basic_ifstream&& __rhs) 1059 : basic_istream<char_type, traits_type>(_VSTD::move(__rhs)), 1060 __sb_(_VSTD::move(__rhs.__sb_)) 1061{ 1062 this->set_rdbuf(&__sb_); 1063} 1064 1065template <class _CharT, class _Traits> 1066inline _LIBCPP_INLINE_VISIBILITY 1067basic_ifstream<_CharT, _Traits>& 1068basic_ifstream<_CharT, _Traits>::operator=(basic_ifstream&& __rhs) 1069{ 1070 basic_istream<char_type, traits_type>::operator=(_VSTD::move(__rhs)); 1071 __sb_ = _VSTD::move(__rhs.__sb_); 1072 return *this; 1073} 1074 1075#endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES 1076 1077template <class _CharT, class _Traits> 1078inline _LIBCPP_INLINE_VISIBILITY 1079void 1080basic_ifstream<_CharT, _Traits>::swap(basic_ifstream& __rhs) 1081{ 1082 basic_istream<char_type, traits_type>::swap(__rhs); 1083 __sb_.swap(__rhs.__sb_); 1084} 1085 1086template <class _CharT, class _Traits> 1087inline _LIBCPP_INLINE_VISIBILITY 1088void 1089swap(basic_ifstream<_CharT, _Traits>& __x, basic_ifstream<_CharT, _Traits>& __y) 1090{ 1091 __x.swap(__y); 1092} 1093 1094template <class _CharT, class _Traits> 1095inline _LIBCPP_INLINE_VISIBILITY 1096basic_filebuf<_CharT, _Traits>* 1097basic_ifstream<_CharT, _Traits>::rdbuf() const 1098{ 1099 return const_cast<basic_filebuf<char_type, traits_type>*>(&__sb_); 1100} 1101 1102template <class _CharT, class _Traits> 1103inline _LIBCPP_INLINE_VISIBILITY 1104bool 1105basic_ifstream<_CharT, _Traits>::is_open() const 1106{ 1107 return __sb_.is_open(); 1108} 1109 1110template <class _CharT, class _Traits> 1111void 1112basic_ifstream<_CharT, _Traits>::open(const char* __s, ios_base::openmode __mode) 1113{ 1114 if (__sb_.open(__s, __mode | ios_base::in)) 1115 this->clear(); 1116 else 1117 this->setstate(ios_base::failbit); 1118} 1119 1120template <class _CharT, class _Traits> 1121void 1122basic_ifstream<_CharT, _Traits>::open(const string& __s, ios_base::openmode __mode) 1123{ 1124 if (__sb_.open(__s, __mode | ios_base::in)) 1125 this->clear(); 1126 else 1127 this->setstate(ios_base::failbit); 1128} 1129 1130template <class _CharT, class _Traits> 1131inline _LIBCPP_INLINE_VISIBILITY 1132void 1133basic_ifstream<_CharT, _Traits>::close() 1134{ 1135 if (__sb_.close() == 0) 1136 this->setstate(ios_base::failbit); 1137} 1138 1139// basic_ofstream 1140 1141template <class _CharT, class _Traits> 1142class _LIBCPP_TYPE_VIS_ONLY basic_ofstream 1143 : public basic_ostream<_CharT, _Traits> 1144{ 1145public: 1146 typedef _CharT char_type; 1147 typedef _Traits traits_type; 1148 typedef typename traits_type::int_type int_type; 1149 typedef typename traits_type::pos_type pos_type; 1150 typedef typename traits_type::off_type off_type; 1151 1152 basic_ofstream(); 1153 explicit basic_ofstream(const char* __s, ios_base::openmode __mode = ios_base::out); 1154 explicit basic_ofstream(const string& __s, ios_base::openmode __mode = ios_base::out); 1155#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 1156 basic_ofstream(basic_ofstream&& __rhs); 1157#endif 1158 1159#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 1160 basic_ofstream& operator=(basic_ofstream&& __rhs); 1161#endif 1162 void swap(basic_ofstream& __rhs); 1163 1164 basic_filebuf<char_type, traits_type>* rdbuf() const; 1165 bool is_open() const; 1166 void open(const char* __s, ios_base::openmode __mode = ios_base::out); 1167 void open(const string& __s, ios_base::openmode __mode = ios_base::out); 1168 void close(); 1169 1170private: 1171 basic_filebuf<char_type, traits_type> __sb_; 1172}; 1173 1174template <class _CharT, class _Traits> 1175inline _LIBCPP_INLINE_VISIBILITY 1176basic_ofstream<_CharT, _Traits>::basic_ofstream() 1177 : basic_ostream<char_type, traits_type>(&__sb_) 1178{ 1179} 1180 1181template <class _CharT, class _Traits> 1182inline _LIBCPP_INLINE_VISIBILITY 1183basic_ofstream<_CharT, _Traits>::basic_ofstream(const char* __s, ios_base::openmode __mode) 1184 : basic_ostream<char_type, traits_type>(&__sb_) 1185{ 1186 if (__sb_.open(__s, __mode | ios_base::out) == 0) 1187 this->setstate(ios_base::failbit); 1188} 1189 1190template <class _CharT, class _Traits> 1191inline _LIBCPP_INLINE_VISIBILITY 1192basic_ofstream<_CharT, _Traits>::basic_ofstream(const string& __s, ios_base::openmode __mode) 1193 : basic_ostream<char_type, traits_type>(&__sb_) 1194{ 1195 if (__sb_.open(__s, __mode | ios_base::out) == 0) 1196 this->setstate(ios_base::failbit); 1197} 1198 1199#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 1200 1201template <class _CharT, class _Traits> 1202inline _LIBCPP_INLINE_VISIBILITY 1203basic_ofstream<_CharT, _Traits>::basic_ofstream(basic_ofstream&& __rhs) 1204 : basic_ostream<char_type, traits_type>(_VSTD::move(__rhs)), 1205 __sb_(_VSTD::move(__rhs.__sb_)) 1206{ 1207 this->set_rdbuf(&__sb_); 1208} 1209 1210template <class _CharT, class _Traits> 1211inline _LIBCPP_INLINE_VISIBILITY 1212basic_ofstream<_CharT, _Traits>& 1213basic_ofstream<_CharT, _Traits>::operator=(basic_ofstream&& __rhs) 1214{ 1215 basic_ostream<char_type, traits_type>::operator=(_VSTD::move(__rhs)); 1216 __sb_ = _VSTD::move(__rhs.__sb_); 1217 return *this; 1218} 1219 1220#endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES 1221 1222template <class _CharT, class _Traits> 1223inline _LIBCPP_INLINE_VISIBILITY 1224void 1225basic_ofstream<_CharT, _Traits>::swap(basic_ofstream& __rhs) 1226{ 1227 basic_ostream<char_type, traits_type>::swap(__rhs); 1228 __sb_.swap(__rhs.__sb_); 1229} 1230 1231template <class _CharT, class _Traits> 1232inline _LIBCPP_INLINE_VISIBILITY 1233void 1234swap(basic_ofstream<_CharT, _Traits>& __x, basic_ofstream<_CharT, _Traits>& __y) 1235{ 1236 __x.swap(__y); 1237} 1238 1239template <class _CharT, class _Traits> 1240inline _LIBCPP_INLINE_VISIBILITY 1241basic_filebuf<_CharT, _Traits>* 1242basic_ofstream<_CharT, _Traits>::rdbuf() const 1243{ 1244 return const_cast<basic_filebuf<char_type, traits_type>*>(&__sb_); 1245} 1246 1247template <class _CharT, class _Traits> 1248inline _LIBCPP_INLINE_VISIBILITY 1249bool 1250basic_ofstream<_CharT, _Traits>::is_open() const 1251{ 1252 return __sb_.is_open(); 1253} 1254 1255template <class _CharT, class _Traits> 1256void 1257basic_ofstream<_CharT, _Traits>::open(const char* __s, ios_base::openmode __mode) 1258{ 1259 if (__sb_.open(__s, __mode | ios_base::out)) 1260 this->clear(); 1261 else 1262 this->setstate(ios_base::failbit); 1263} 1264 1265template <class _CharT, class _Traits> 1266void 1267basic_ofstream<_CharT, _Traits>::open(const string& __s, ios_base::openmode __mode) 1268{ 1269 if (__sb_.open(__s, __mode | ios_base::out)) 1270 this->clear(); 1271 else 1272 this->setstate(ios_base::failbit); 1273} 1274 1275template <class _CharT, class _Traits> 1276inline _LIBCPP_INLINE_VISIBILITY 1277void 1278basic_ofstream<_CharT, _Traits>::close() 1279{ 1280 if (__sb_.close() == 0) 1281 this->setstate(ios_base::failbit); 1282} 1283 1284// basic_fstream 1285 1286template <class _CharT, class _Traits> 1287class _LIBCPP_TYPE_VIS_ONLY basic_fstream 1288 : public basic_iostream<_CharT, _Traits> 1289{ 1290public: 1291 typedef _CharT char_type; 1292 typedef _Traits traits_type; 1293 typedef typename traits_type::int_type int_type; 1294 typedef typename traits_type::pos_type pos_type; 1295 typedef typename traits_type::off_type off_type; 1296 1297 basic_fstream(); 1298 explicit basic_fstream(const char* __s, ios_base::openmode __mode = ios_base::in | ios_base::out); 1299 explicit basic_fstream(const string& __s, ios_base::openmode __mode = ios_base::in | ios_base::out); 1300#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 1301 basic_fstream(basic_fstream&& __rhs); 1302#endif 1303 1304#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 1305 basic_fstream& operator=(basic_fstream&& __rhs); 1306#endif 1307 void swap(basic_fstream& __rhs); 1308 1309 basic_filebuf<char_type, traits_type>* rdbuf() const; 1310 bool is_open() const; 1311 void open(const char* __s, ios_base::openmode __mode = ios_base::in | ios_base::out); 1312 void open(const string& __s, ios_base::openmode __mode = ios_base::in | ios_base::out); 1313 void close(); 1314 1315private: 1316 basic_filebuf<char_type, traits_type> __sb_; 1317}; 1318 1319template <class _CharT, class _Traits> 1320inline _LIBCPP_INLINE_VISIBILITY 1321basic_fstream<_CharT, _Traits>::basic_fstream() 1322 : basic_iostream<char_type, traits_type>(&__sb_) 1323{ 1324} 1325 1326template <class _CharT, class _Traits> 1327inline _LIBCPP_INLINE_VISIBILITY 1328basic_fstream<_CharT, _Traits>::basic_fstream(const char* __s, ios_base::openmode __mode) 1329 : basic_iostream<char_type, traits_type>(&__sb_) 1330{ 1331 if (__sb_.open(__s, __mode) == 0) 1332 this->setstate(ios_base::failbit); 1333} 1334 1335template <class _CharT, class _Traits> 1336inline _LIBCPP_INLINE_VISIBILITY 1337basic_fstream<_CharT, _Traits>::basic_fstream(const string& __s, ios_base::openmode __mode) 1338 : basic_iostream<char_type, traits_type>(&__sb_) 1339{ 1340 if (__sb_.open(__s, __mode) == 0) 1341 this->setstate(ios_base::failbit); 1342} 1343 1344#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 1345 1346template <class _CharT, class _Traits> 1347inline _LIBCPP_INLINE_VISIBILITY 1348basic_fstream<_CharT, _Traits>::basic_fstream(basic_fstream&& __rhs) 1349 : basic_iostream<char_type, traits_type>(_VSTD::move(__rhs)), 1350 __sb_(_VSTD::move(__rhs.__sb_)) 1351{ 1352 this->set_rdbuf(&__sb_); 1353} 1354 1355template <class _CharT, class _Traits> 1356inline _LIBCPP_INLINE_VISIBILITY 1357basic_fstream<_CharT, _Traits>& 1358basic_fstream<_CharT, _Traits>::operator=(basic_fstream&& __rhs) 1359{ 1360 basic_iostream<char_type, traits_type>::operator=(_VSTD::move(__rhs)); 1361 __sb_ = _VSTD::move(__rhs.__sb_); 1362 return *this; 1363} 1364 1365#endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES 1366 1367template <class _CharT, class _Traits> 1368inline _LIBCPP_INLINE_VISIBILITY 1369void 1370basic_fstream<_CharT, _Traits>::swap(basic_fstream& __rhs) 1371{ 1372 basic_iostream<char_type, traits_type>::swap(__rhs); 1373 __sb_.swap(__rhs.__sb_); 1374} 1375 1376template <class _CharT, class _Traits> 1377inline _LIBCPP_INLINE_VISIBILITY 1378void 1379swap(basic_fstream<_CharT, _Traits>& __x, basic_fstream<_CharT, _Traits>& __y) 1380{ 1381 __x.swap(__y); 1382} 1383 1384template <class _CharT, class _Traits> 1385inline _LIBCPP_INLINE_VISIBILITY 1386basic_filebuf<_CharT, _Traits>* 1387basic_fstream<_CharT, _Traits>::rdbuf() const 1388{ 1389 return const_cast<basic_filebuf<char_type, traits_type>*>(&__sb_); 1390} 1391 1392template <class _CharT, class _Traits> 1393inline _LIBCPP_INLINE_VISIBILITY 1394bool 1395basic_fstream<_CharT, _Traits>::is_open() const 1396{ 1397 return __sb_.is_open(); 1398} 1399 1400template <class _CharT, class _Traits> 1401void 1402basic_fstream<_CharT, _Traits>::open(const char* __s, ios_base::openmode __mode) 1403{ 1404 if (__sb_.open(__s, __mode)) 1405 this->clear(); 1406 else 1407 this->setstate(ios_base::failbit); 1408} 1409 1410template <class _CharT, class _Traits> 1411void 1412basic_fstream<_CharT, _Traits>::open(const string& __s, ios_base::openmode __mode) 1413{ 1414 if (__sb_.open(__s, __mode)) 1415 this->clear(); 1416 else 1417 this->setstate(ios_base::failbit); 1418} 1419 1420template <class _CharT, class _Traits> 1421inline _LIBCPP_INLINE_VISIBILITY 1422void 1423basic_fstream<_CharT, _Traits>::close() 1424{ 1425 if (__sb_.close() == 0) 1426 this->setstate(ios_base::failbit); 1427} 1428 1429_LIBCPP_END_NAMESPACE_STD 1430 1431#endif // _LIBCPP_FSTREAM 1432