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 17 template <class charT, class traits = char_traits<charT> > 18 class basic_filebuf 19 : public basic_streambuf<charT, traits> 20 { 21 public: 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 43 protected: 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 59 template <class charT, class traits> 60 void 61 swap(basic_filebuf<charT, traits>& x, basic_filebuf<charT, traits>& y); 62 63 typedef basic_filebuf<char> filebuf; 64 typedef basic_filebuf<wchar_t> wfilebuf; 65 66 template <class charT, class traits = char_traits<charT> > 67 class basic_ifstream 68 : public basic_istream<charT,traits> 69 { 70 public: 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 92 template <class charT, class traits> 93 void 94 swap(basic_ifstream<charT, traits>& x, basic_ifstream<charT, traits>& y); 95 96 typedef basic_ifstream<char> ifstream; 97 typedef basic_ifstream<wchar_t> wifstream; 98 99 template <class charT, class traits = char_traits<charT> > 100 class basic_ofstream 101 : public basic_ostream<charT,traits> 102 { 103 public: 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 }; 124 125 template <class charT, class traits> 126 void 127 swap(basic_ofstream<charT, traits>& x, basic_ofstream<charT, traits>& y); 128 129 typedef basic_ofstream<char> ofstream; 130 typedef basic_ofstream<wchar_t> wofstream; 131 132 template <class charT, class traits=char_traits<charT> > 133 class basic_fstream 134 : public basic_iostream<charT,traits> 135 { 136 public: 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 }; 157 158 template <class charT, class traits> 159 void swap(basic_fstream<charT, traits>& x, basic_fstream<charT, traits>& y); 160 161 typedef basic_fstream<char> fstream; 162 typedef 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 181 182 template <class _CharT, class _Traits> 183 class _LIBCPP_VISIBLE basic_filebuf 184 : public basic_streambuf<_CharT, _Traits> 185 { 186 public: 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(); 212 213 protected: 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); 225 226 private: 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 }; 247 248 template <class _CharT, class _Traits> 249 basic_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 275 276 template <class _CharT, class _Traits> 277 basic_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 } 339 340 template <class _CharT, class _Traits> 341 inline _LIBCPP_INLINE_VISIBILITY 342 basic_filebuf<_CharT, _Traits>& 343 basic_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 351 352 template <class _CharT, class _Traits> 353 basic_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 } 371 372 template <class _CharT, class _Traits> 373 void 374 basic_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 } 449 450 template <class _CharT, class _Traits> 451 inline _LIBCPP_INLINE_VISIBILITY 452 void 453 swap(basic_filebuf<_CharT, _Traits>& __x, basic_filebuf<_CharT, _Traits>& __y) 454 { 455 __x.swap(__y); 456 } 457 458 template <class _CharT, class _Traits> 459 inline _LIBCPP_INLINE_VISIBILITY 460 bool 461 basic_filebuf<_CharT, _Traits>::is_open() const 462 { 463 return __file_ != 0; 464 } 465 466 template <class _CharT, class _Traits> 467 basic_filebuf<_CharT, _Traits>* 468 basic_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 } 545 546 template <class _CharT, class _Traits> 547 inline _LIBCPP_INLINE_VISIBILITY 548 basic_filebuf<_CharT, _Traits>* 549 basic_filebuf<_CharT, _Traits>::open(const string& __s, ios_base::openmode __mode) 550 { 551 return open(__s.c_str(), __mode); 552 } 553 554 template <class _CharT, class _Traits> 555 basic_filebuf<_CharT, _Traits>* 556 basic_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 } 572 573 template <class _CharT, class _Traits> 574 typename basic_filebuf<_CharT, _Traits>::int_type 575 basic_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 } 640 641 template <class _CharT, class _Traits> 642 typename basic_filebuf<_CharT, _Traits>::int_type 643 basic_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 } 662 663 template <class _CharT, class _Traits> 664 typename basic_filebuf<_CharT, _Traits>::int_type 665 basic_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 } 728 729 template <class _CharT, class _Traits> 730 basic_streambuf<_CharT, _Traits>* 731 basic_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 } 781 782 template <class _CharT, class _Traits> 783 typename basic_filebuf<_CharT, _Traits>::pos_type 784 basic_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 (fseeko(__file_, __width > 0 ? __width * __off : 0, __whence)) 811 return pos_type(off_type(-1)); 812 pos_type __r = ftello(__file_); 813 __r.state(__st_); 814 return __r; 815 } 816 817 template <class _CharT, class _Traits> 818 typename basic_filebuf<_CharT, _Traits>::pos_type 819 basic_filebuf<_CharT, _Traits>::seekpos(pos_type __sp, ios_base::openmode) 820 { 821 if (__file_ == 0 || sync()) 822 return pos_type(off_type(-1)); 823 if (fseeko(__file_, __sp, SEEK_SET)) 824 return pos_type(off_type(-1)); 825 __st_ = __sp.state(); 826 return __sp; 827 } 828 829 template <class _CharT, class _Traits> 830 int 831 basic_filebuf<_CharT, _Traits>::sync() 832 { 833 if (__file_ == 0) 834 return 0; 835 #ifndef _LIBCPP_NO_EXCEPTIONS 836 if (!__cv_) 837 throw bad_cast(); 838 #endif 839 if (__cm_ & ios_base::out) 840 { 841 if (this->pptr() != this->pbase()) 842 if (overflow() == traits_type::eof()) 843 return -1; 844 codecvt_base::result __r; 845 do 846 { 847 char* __extbe; 848 __r = __cv_->unshift(__st_, __extbuf_, __extbuf_ + __ebs_, __extbe); 849 size_t __nmemb = static_cast<size_t>(__extbe - __extbuf_); 850 if (fwrite(__extbuf_, 1, __nmemb, __file_) != __nmemb) 851 return -1; 852 } while (__r == codecvt_base::partial); 853 if (__r == codecvt_base::error) 854 return -1; 855 if (fflush(__file_)) 856 return -1; 857 } 858 else if (__cm_ & ios_base::in) 859 { 860 off_type __c; 861 state_type __state = __st_last_; 862 bool __update_st = false; 863 if (__always_noconv_) 864 __c = this->egptr() - this->gptr(); 865 else 866 { 867 int __width = __cv_->encoding(); 868 __c = __extbufend_ - __extbufnext_; 869 if (__width > 0) 870 __c += __width * (this->egptr() - this->gptr()); 871 else 872 { 873 if (this->gptr() != this->egptr()) 874 { 875 const int __off = __cv_->length(__state, __extbuf_, 876 __extbufnext_, 877 this->gptr() - this->eback()); 878 __c += __extbufnext_ - __extbuf_ - __off; 879 __update_st = true; 880 } 881 } 882 } 883 if (fseeko(__file_, -__c, SEEK_CUR)) 884 return -1; 885 if (__update_st) 886 __st_ = __state; 887 __extbufnext_ = __extbufend_ = __extbuf_; 888 this->setg(0, 0, 0); 889 __cm_ = 0; 890 } 891 return 0; 892 } 893 894 template <class _CharT, class _Traits> 895 void 896 basic_filebuf<_CharT, _Traits>::imbue(const locale& __loc) 897 { 898 sync(); 899 __cv_ = &use_facet<codecvt<char_type, char, state_type> >(__loc); 900 bool __old_anc = __always_noconv_; 901 __always_noconv_ = __cv_->always_noconv(); 902 if (__old_anc != __always_noconv_) 903 { 904 this->setg(0, 0, 0); 905 this->setp(0, 0); 906 // invariant, char_type is char, else we couldn't get here 907 if (__always_noconv_) // need to dump __intbuf_ 908 { 909 if (__owns_eb_) 910 delete [] __extbuf_; 911 __owns_eb_ = __owns_ib_; 912 __ebs_ = __ibs_; 913 __extbuf_ = (char*)__intbuf_; 914 __ibs_ = 0; 915 __intbuf_ = 0; 916 __owns_ib_ = false; 917 } 918 else // need to obtain an __intbuf_. 919 { // If __extbuf_ is user-supplied, use it, else new __intbuf_ 920 if (!__owns_eb_ && __extbuf_ != __extbuf_min_) 921 { 922 __ibs_ = __ebs_; 923 __intbuf_ = (char_type*)__extbuf_; 924 __owns_ib_ = false; 925 __extbuf_ = new char[__ebs_]; 926 __owns_eb_ = true; 927 } 928 else 929 { 930 __ibs_ = __ebs_; 931 __intbuf_ = new char_type[__ibs_]; 932 __owns_ib_ = true; 933 } 934 } 935 } 936 } 937 938 template <class _CharT, class _Traits> 939 bool 940 basic_filebuf<_CharT, _Traits>::__read_mode() 941 { 942 if (!(__cm_ & ios_base::in)) 943 { 944 this->setp(0, 0); 945 if (__always_noconv_) 946 this->setg((char_type*)__extbuf_, 947 (char_type*)__extbuf_ + __ebs_, 948 (char_type*)__extbuf_ + __ebs_); 949 else 950 this->setg(__intbuf_, __intbuf_ + __ibs_, __intbuf_ + __ibs_); 951 __cm_ = ios_base::in; 952 return true; 953 } 954 return false; 955 } 956 957 template <class _CharT, class _Traits> 958 void 959 basic_filebuf<_CharT, _Traits>::__write_mode() 960 { 961 if (!(__cm_ & ios_base::out)) 962 { 963 this->setg(0, 0, 0); 964 if (__ebs_ > sizeof(__extbuf_min_)) 965 { 966 if (__always_noconv_) 967 this->setp((char_type*)__extbuf_, 968 (char_type*)__extbuf_ + (__ebs_ - 1)); 969 else 970 this->setp(__intbuf_, __intbuf_ + (__ibs_ - 1)); 971 } 972 else 973 this->setp(0, 0); 974 __cm_ = ios_base::out; 975 } 976 } 977 978 // basic_ifstream 979 980 template <class _CharT, class _Traits> 981 class _LIBCPP_VISIBLE basic_ifstream 982 : public basic_istream<_CharT, _Traits> 983 { 984 public: 985 typedef _CharT char_type; 986 typedef _Traits traits_type; 987 typedef typename traits_type::int_type int_type; 988 typedef typename traits_type::pos_type pos_type; 989 typedef typename traits_type::off_type off_type; 990 991 basic_ifstream(); 992 explicit basic_ifstream(const char* __s, ios_base::openmode __mode = ios_base::in); 993 explicit basic_ifstream(const string& __s, ios_base::openmode __mode = ios_base::in); 994 #ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 995 basic_ifstream(basic_ifstream&& __rhs); 996 #endif 997 998 #ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 999 basic_ifstream& operator=(basic_ifstream&& __rhs); 1000 #endif 1001 void swap(basic_ifstream& __rhs); 1002 1003 basic_filebuf<char_type, traits_type>* rdbuf() const; 1004 bool is_open() const; 1005 void open(const char* __s, ios_base::openmode __mode = ios_base::in); 1006 void open(const string& __s, ios_base::openmode __mode = ios_base::in); 1007 void close(); 1008 1009 private: 1010 basic_filebuf<char_type, traits_type> __sb_; 1011 }; 1012 1013 template <class _CharT, class _Traits> 1014 inline _LIBCPP_INLINE_VISIBILITY 1015 basic_ifstream<_CharT, _Traits>::basic_ifstream() 1016 : basic_istream<char_type, traits_type>(&__sb_) 1017 { 1018 } 1019 1020 template <class _CharT, class _Traits> 1021 inline _LIBCPP_INLINE_VISIBILITY 1022 basic_ifstream<_CharT, _Traits>::basic_ifstream(const char* __s, ios_base::openmode __mode) 1023 : basic_istream<char_type, traits_type>(&__sb_) 1024 { 1025 if (__sb_.open(__s, __mode | ios_base::in) == 0) 1026 this->setstate(ios_base::failbit); 1027 } 1028 1029 template <class _CharT, class _Traits> 1030 inline _LIBCPP_INLINE_VISIBILITY 1031 basic_ifstream<_CharT, _Traits>::basic_ifstream(const string& __s, ios_base::openmode __mode) 1032 : basic_istream<char_type, traits_type>(&__sb_) 1033 { 1034 if (__sb_.open(__s, __mode | ios_base::in) == 0) 1035 this->setstate(ios_base::failbit); 1036 } 1037 1038 #ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 1039 1040 template <class _CharT, class _Traits> 1041 inline _LIBCPP_INLINE_VISIBILITY 1042 basic_ifstream<_CharT, _Traits>::basic_ifstream(basic_ifstream&& __rhs) 1043 : basic_istream<char_type, traits_type>(_VSTD::move(__rhs)), 1044 __sb_(_VSTD::move(__rhs.__sb_)) 1045 { 1046 this->set_rdbuf(&__sb_); 1047 } 1048 1049 template <class _CharT, class _Traits> 1050 inline _LIBCPP_INLINE_VISIBILITY 1051 basic_ifstream<_CharT, _Traits>& 1052 basic_ifstream<_CharT, _Traits>::operator=(basic_ifstream&& __rhs) 1053 { 1054 basic_istream<char_type, traits_type>::operator=(_VSTD::move(__rhs)); 1055 __sb_ = _VSTD::move(__rhs.__sb_); 1056 return *this; 1057 } 1058 1059 #endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES 1060 1061 template <class _CharT, class _Traits> 1062 inline _LIBCPP_INLINE_VISIBILITY 1063 void 1064 basic_ifstream<_CharT, _Traits>::swap(basic_ifstream& __rhs) 1065 { 1066 basic_istream<char_type, traits_type>::swap(__rhs); 1067 __sb_.swap(__rhs.__sb_); 1068 } 1069 1070 template <class _CharT, class _Traits> 1071 inline _LIBCPP_INLINE_VISIBILITY 1072 void 1073 swap(basic_ifstream<_CharT, _Traits>& __x, basic_ifstream<_CharT, _Traits>& __y) 1074 { 1075 __x.swap(__y); 1076 } 1077 1078 template <class _CharT, class _Traits> 1079 inline _LIBCPP_INLINE_VISIBILITY 1080 basic_filebuf<_CharT, _Traits>* 1081 basic_ifstream<_CharT, _Traits>::rdbuf() const 1082 { 1083 return const_cast<basic_filebuf<char_type, traits_type>*>(&__sb_); 1084 } 1085 1086 template <class _CharT, class _Traits> 1087 inline _LIBCPP_INLINE_VISIBILITY 1088 bool 1089 basic_ifstream<_CharT, _Traits>::is_open() const 1090 { 1091 return __sb_.is_open(); 1092 } 1093 1094 template <class _CharT, class _Traits> 1095 void 1096 basic_ifstream<_CharT, _Traits>::open(const char* __s, ios_base::openmode __mode) 1097 { 1098 if (__sb_.open(__s, __mode | ios_base::in)) 1099 this->clear(); 1100 else 1101 this->setstate(ios_base::failbit); 1102 } 1103 1104 template <class _CharT, class _Traits> 1105 void 1106 basic_ifstream<_CharT, _Traits>::open(const string& __s, ios_base::openmode __mode) 1107 { 1108 if (__sb_.open(__s, __mode | ios_base::in)) 1109 this->clear(); 1110 else 1111 this->setstate(ios_base::failbit); 1112 } 1113 1114 template <class _CharT, class _Traits> 1115 inline _LIBCPP_INLINE_VISIBILITY 1116 void 1117 basic_ifstream<_CharT, _Traits>::close() 1118 { 1119 if (__sb_.close() == 0) 1120 this->setstate(ios_base::failbit); 1121 } 1122 1123 // basic_ofstream 1124 1125 template <class _CharT, class _Traits> 1126 class _LIBCPP_VISIBLE basic_ofstream 1127 : public basic_ostream<_CharT, _Traits> 1128 { 1129 public: 1130 typedef _CharT char_type; 1131 typedef _Traits traits_type; 1132 typedef typename traits_type::int_type int_type; 1133 typedef typename traits_type::pos_type pos_type; 1134 typedef typename traits_type::off_type off_type; 1135 1136 basic_ofstream(); 1137 explicit basic_ofstream(const char* __s, ios_base::openmode __mode = ios_base::out); 1138 explicit basic_ofstream(const string& __s, ios_base::openmode __mode = ios_base::out); 1139 #ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 1140 basic_ofstream(basic_ofstream&& __rhs); 1141 #endif 1142 1143 #ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 1144 basic_ofstream& operator=(basic_ofstream&& __rhs); 1145 #endif 1146 void swap(basic_ofstream& __rhs); 1147 1148 basic_filebuf<char_type, traits_type>* rdbuf() const; 1149 bool is_open() const; 1150 void open(const char* __s, ios_base::openmode __mode = ios_base::out); 1151 void open(const string& __s, ios_base::openmode __mode = ios_base::out); 1152 void close(); 1153 1154 private: 1155 basic_filebuf<char_type, traits_type> __sb_; 1156 }; 1157 1158 template <class _CharT, class _Traits> 1159 inline _LIBCPP_INLINE_VISIBILITY 1160 basic_ofstream<_CharT, _Traits>::basic_ofstream() 1161 : basic_ostream<char_type, traits_type>(&__sb_) 1162 { 1163 } 1164 1165 template <class _CharT, class _Traits> 1166 inline _LIBCPP_INLINE_VISIBILITY 1167 basic_ofstream<_CharT, _Traits>::basic_ofstream(const char* __s, ios_base::openmode __mode) 1168 : basic_ostream<char_type, traits_type>(&__sb_) 1169 { 1170 if (__sb_.open(__s, __mode | ios_base::out) == 0) 1171 this->setstate(ios_base::failbit); 1172 } 1173 1174 template <class _CharT, class _Traits> 1175 inline _LIBCPP_INLINE_VISIBILITY 1176 basic_ofstream<_CharT, _Traits>::basic_ofstream(const string& __s, ios_base::openmode __mode) 1177 : basic_ostream<char_type, traits_type>(&__sb_) 1178 { 1179 if (__sb_.open(__s, __mode | ios_base::out) == 0) 1180 this->setstate(ios_base::failbit); 1181 } 1182 1183 #ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 1184 1185 template <class _CharT, class _Traits> 1186 inline _LIBCPP_INLINE_VISIBILITY 1187 basic_ofstream<_CharT, _Traits>::basic_ofstream(basic_ofstream&& __rhs) 1188 : basic_ostream<char_type, traits_type>(_VSTD::move(__rhs)), 1189 __sb_(_VSTD::move(__rhs.__sb_)) 1190 { 1191 this->set_rdbuf(&__sb_); 1192 } 1193 1194 template <class _CharT, class _Traits> 1195 inline _LIBCPP_INLINE_VISIBILITY 1196 basic_ofstream<_CharT, _Traits>& 1197 basic_ofstream<_CharT, _Traits>::operator=(basic_ofstream&& __rhs) 1198 { 1199 basic_ostream<char_type, traits_type>::operator=(_VSTD::move(__rhs)); 1200 __sb_ = _VSTD::move(__rhs.__sb_); 1201 return *this; 1202 } 1203 1204 #endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES 1205 1206 template <class _CharT, class _Traits> 1207 inline _LIBCPP_INLINE_VISIBILITY 1208 void 1209 basic_ofstream<_CharT, _Traits>::swap(basic_ofstream& __rhs) 1210 { 1211 basic_ostream<char_type, traits_type>::swap(__rhs); 1212 __sb_.swap(__rhs.__sb_); 1213 } 1214 1215 template <class _CharT, class _Traits> 1216 inline _LIBCPP_INLINE_VISIBILITY 1217 void 1218 swap(basic_ofstream<_CharT, _Traits>& __x, basic_ofstream<_CharT, _Traits>& __y) 1219 { 1220 __x.swap(__y); 1221 } 1222 1223 template <class _CharT, class _Traits> 1224 inline _LIBCPP_INLINE_VISIBILITY 1225 basic_filebuf<_CharT, _Traits>* 1226 basic_ofstream<_CharT, _Traits>::rdbuf() const 1227 { 1228 return const_cast<basic_filebuf<char_type, traits_type>*>(&__sb_); 1229 } 1230 1231 template <class _CharT, class _Traits> 1232 inline _LIBCPP_INLINE_VISIBILITY 1233 bool 1234 basic_ofstream<_CharT, _Traits>::is_open() const 1235 { 1236 return __sb_.is_open(); 1237 } 1238 1239 template <class _CharT, class _Traits> 1240 void 1241 basic_ofstream<_CharT, _Traits>::open(const char* __s, ios_base::openmode __mode) 1242 { 1243 if (__sb_.open(__s, __mode | ios_base::out)) 1244 this->clear(); 1245 else 1246 this->setstate(ios_base::failbit); 1247 } 1248 1249 template <class _CharT, class _Traits> 1250 void 1251 basic_ofstream<_CharT, _Traits>::open(const string& __s, ios_base::openmode __mode) 1252 { 1253 if (__sb_.open(__s, __mode | ios_base::out)) 1254 this->clear(); 1255 else 1256 this->setstate(ios_base::failbit); 1257 } 1258 1259 template <class _CharT, class _Traits> 1260 inline _LIBCPP_INLINE_VISIBILITY 1261 void 1262 basic_ofstream<_CharT, _Traits>::close() 1263 { 1264 if (__sb_.close() == 0) 1265 this->setstate(ios_base::failbit); 1266 } 1267 1268 // basic_fstream 1269 1270 template <class _CharT, class _Traits> 1271 class _LIBCPP_VISIBLE basic_fstream 1272 : public basic_iostream<_CharT, _Traits> 1273 { 1274 public: 1275 typedef _CharT char_type; 1276 typedef _Traits traits_type; 1277 typedef typename traits_type::int_type int_type; 1278 typedef typename traits_type::pos_type pos_type; 1279 typedef typename traits_type::off_type off_type; 1280 1281 basic_fstream(); 1282 explicit basic_fstream(const char* __s, ios_base::openmode __mode = ios_base::in | ios_base::out); 1283 explicit basic_fstream(const string& __s, ios_base::openmode __mode = ios_base::in | ios_base::out); 1284 #ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 1285 basic_fstream(basic_fstream&& __rhs); 1286 #endif 1287 1288 #ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 1289 basic_fstream& operator=(basic_fstream&& __rhs); 1290 #endif 1291 void swap(basic_fstream& __rhs); 1292 1293 basic_filebuf<char_type, traits_type>* rdbuf() const; 1294 bool is_open() const; 1295 void open(const char* __s, ios_base::openmode __mode = ios_base::in | ios_base::out); 1296 void open(const string& __s, ios_base::openmode __mode = ios_base::in | ios_base::out); 1297 void close(); 1298 1299 private: 1300 basic_filebuf<char_type, traits_type> __sb_; 1301 }; 1302 1303 template <class _CharT, class _Traits> 1304 inline _LIBCPP_INLINE_VISIBILITY 1305 basic_fstream<_CharT, _Traits>::basic_fstream() 1306 : basic_iostream<char_type, traits_type>(&__sb_) 1307 { 1308 } 1309 1310 template <class _CharT, class _Traits> 1311 inline _LIBCPP_INLINE_VISIBILITY 1312 basic_fstream<_CharT, _Traits>::basic_fstream(const char* __s, ios_base::openmode __mode) 1313 : basic_iostream<char_type, traits_type>(&__sb_) 1314 { 1315 if (__sb_.open(__s, __mode) == 0) 1316 this->setstate(ios_base::failbit); 1317 } 1318 1319 template <class _CharT, class _Traits> 1320 inline _LIBCPP_INLINE_VISIBILITY 1321 basic_fstream<_CharT, _Traits>::basic_fstream(const string& __s, ios_base::openmode __mode) 1322 : basic_iostream<char_type, traits_type>(&__sb_) 1323 { 1324 if (__sb_.open(__s, __mode) == 0) 1325 this->setstate(ios_base::failbit); 1326 } 1327 1328 #ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 1329 1330 template <class _CharT, class _Traits> 1331 inline _LIBCPP_INLINE_VISIBILITY 1332 basic_fstream<_CharT, _Traits>::basic_fstream(basic_fstream&& __rhs) 1333 : basic_iostream<char_type, traits_type>(_VSTD::move(__rhs)), 1334 __sb_(_VSTD::move(__rhs.__sb_)) 1335 { 1336 this->set_rdbuf(&__sb_); 1337 } 1338 1339 template <class _CharT, class _Traits> 1340 inline _LIBCPP_INLINE_VISIBILITY 1341 basic_fstream<_CharT, _Traits>& 1342 basic_fstream<_CharT, _Traits>::operator=(basic_fstream&& __rhs) 1343 { 1344 basic_iostream<char_type, traits_type>::operator=(_VSTD::move(__rhs)); 1345 __sb_ = _VSTD::move(__rhs.__sb_); 1346 return *this; 1347 } 1348 1349 #endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES 1350 1351 template <class _CharT, class _Traits> 1352 inline _LIBCPP_INLINE_VISIBILITY 1353 void 1354 basic_fstream<_CharT, _Traits>::swap(basic_fstream& __rhs) 1355 { 1356 basic_iostream<char_type, traits_type>::swap(__rhs); 1357 __sb_.swap(__rhs.__sb_); 1358 } 1359 1360 template <class _CharT, class _Traits> 1361 inline _LIBCPP_INLINE_VISIBILITY 1362 void 1363 swap(basic_fstream<_CharT, _Traits>& __x, basic_fstream<_CharT, _Traits>& __y) 1364 { 1365 __x.swap(__y); 1366 } 1367 1368 template <class _CharT, class _Traits> 1369 inline _LIBCPP_INLINE_VISIBILITY 1370 basic_filebuf<_CharT, _Traits>* 1371 basic_fstream<_CharT, _Traits>::rdbuf() const 1372 { 1373 return const_cast<basic_filebuf<char_type, traits_type>*>(&__sb_); 1374 } 1375 1376 template <class _CharT, class _Traits> 1377 inline _LIBCPP_INLINE_VISIBILITY 1378 bool 1379 basic_fstream<_CharT, _Traits>::is_open() const 1380 { 1381 return __sb_.is_open(); 1382 } 1383 1384 template <class _CharT, class _Traits> 1385 void 1386 basic_fstream<_CharT, _Traits>::open(const char* __s, ios_base::openmode __mode) 1387 { 1388 if (__sb_.open(__s, __mode)) 1389 this->clear(); 1390 else 1391 this->setstate(ios_base::failbit); 1392 } 1393 1394 template <class _CharT, class _Traits> 1395 void 1396 basic_fstream<_CharT, _Traits>::open(const string& __s, ios_base::openmode __mode) 1397 { 1398 if (__sb_.open(__s, __mode)) 1399 this->clear(); 1400 else 1401 this->setstate(ios_base::failbit); 1402 } 1403 1404 template <class _CharT, class _Traits> 1405 inline _LIBCPP_INLINE_VISIBILITY 1406 void 1407 basic_fstream<_CharT, _Traits>::close() 1408 { 1409 if (__sb_.close() == 0) 1410 this->setstate(ios_base::failbit); 1411 } 1412 1413 _LIBCPP_END_NAMESPACE_STD 1414 1415 #endif // _LIBCPP_FSTREAM 1416
