1 /* 2 * Copyright (c) 1999 3 * Silicon Graphics Computer Systems, Inc. 4 * 5 * Copyright (c) 1999 6 * Boris Fomitchev 7 * 8 * This material is provided "as is", with absolutely no warranty expressed 9 * or implied. Any use is at your own risk. 10 * 11 * Permission to use or copy this software for any purpose is hereby granted 12 * without fee, provided the above notices are retained on all copies. 13 * Permission to modify the code and to distribute modified code is granted, 14 * provided the above notices are retained, and a notice that the code was 15 * modified is included with the above copyright notice. 16 * 17 */ 18 // This header defines classes basic_filebuf, basic_ifstream, 19 // basic_ofstream, and basic_fstream. These classes represent 20 // streambufs and streams whose sources or destinations are files. 21 22 #ifndef _STLP_INTERNAL_FSTREAM_H 23 #define _STLP_INTERNAL_FSTREAM_H 24 25 #if defined(__sgi) && !defined(__GNUC__) && !defined(_STANDARD_C_PLUS_PLUS) 26 # error This header file requires the -LANG:std option 27 #endif 28 29 #ifndef _STLP_INTERNAL_STREAMBUF 30 # include <stl/_streambuf.h> 31 #endif 32 33 #ifndef _STLP_INTERNAL_ISTREAM 34 # include <stl/_istream.h> 35 #endif 36 37 #ifndef _STLP_INTERNAL_CODECVT_H 38 # include <stl/_codecvt.h> 39 #endif 40 41 #if !defined (_STLP_USE_UNIX_IO) && !defined(_STLP_USE_WIN32_IO) && \ 42 !defined (_STLP_USE_UNIX_EMULATION_IO) && !defined (_STLP_USE_STDIO_IO) 43 44 # if defined (_STLP_UNIX) || defined (__CYGWIN__) || defined (__amigaos__) || defined (__EMX__) 45 // open/close/read/write 46 # define _STLP_USE_UNIX_IO 47 # elif defined (_STLP_WIN32) 48 // CreateFile/ReadFile/WriteFile 49 # define _STLP_USE_WIN32_IO 50 # elif defined (_STLP_WIN16) || defined (_STLP_MAC) 51 // _open/_read/_write 52 # define _STLP_USE_UNIX_EMULATION_IO 53 # elif defined (__SYMBIAN32__) 54 //# define _STLP_USE_SYMBIAN_IO 55 # define _STLP_USE_UNIX_IO 56 # else 57 // fopen/fread/fwrite 58 # define _STLP_USE_STDIO_IO 59 # endif /* _STLP_UNIX */ 60 #endif /* mode selection */ 61 62 #if defined (_STLP_USE_SYMBIAN_IO) 63 # include <f32file.h> 64 #endif 65 66 #if defined (_STLP_USE_WIN32_IO) 67 typedef void* _STLP_fd; 68 #elif defined (_STLP_USE_UNIX_EMULATION_IO) || defined (_STLP_USE_STDIO_IO) || defined (_STLP_USE_UNIX_IO) 69 typedef int _STLP_fd; 70 #elif defined (_STLP_USE_SYMBIAN_IO) 71 typedef RFile _STLP_fd; 72 #else 73 # error "Configure i/o !" 74 #endif 75 76 _STLP_BEGIN_NAMESPACE 77 78 //---------------------------------------------------------------------- 79 // Class _Filebuf_base, a private base class to factor out the system- 80 // dependent code from basic_filebuf<>. 81 82 class _STLP_CLASS_DECLSPEC _Filebuf_base { 83 public: // Opening and closing files. 84 _Filebuf_base(); 85 ~_Filebuf_base(); 86 87 bool _M_open(const char*, ios_base::openmode, long __protection); 88 bool _M_open(const char*, ios_base::openmode); 89 bool _M_open(int __id, ios_base::openmode = ios_base::__default_mode); 90 #if defined (_STLP_USE_WIN32_IO) 91 bool _M_open(_STLP_fd __id, ios_base::openmode = ios_base::__default_mode); 92 #endif /* _STLP_USE_WIN32_IO */ 93 bool _M_close(); 94 95 public: // Low-level I/O, like Unix read/write 96 ptrdiff_t _M_read(char* __buf, ptrdiff_t __n); 97 streamoff _M_seek(streamoff __offset, ios_base::seekdir __dir); 98 streamoff _M_file_size(); 99 bool _M_write(char* __buf, ptrdiff_t __n); 100 101 public: // Memory-mapped I/O. 102 void* _M_mmap(streamoff __offset, streamoff __len); 103 void _M_unmap(void* __mmap_base, streamoff __len); 104 105 public: 106 // Returns a value n such that, if pos is the file pointer at the 107 // beginning of the range [first, last), pos + n is the file pointer at 108 // the end. On many operating systems n == __last - __first. 109 // In Unix, writing n characters always bumps the file position by n. 110 // In Windows text mode, however, it bumps the file position by n + m, 111 // where m is the number of newlines in the range. That's because an 112 // internal \n corresponds to an external two-character sequence. _M_get_offset(char * __first,char * __last)113 streamoff _M_get_offset(char* __first, char* __last) { 114 #if defined (_STLP_UNIX) || defined (_STLP_MAC) || defined (__SYMBIAN32__) 115 return __last - __first; 116 #else // defined (_STLP_WIN32) || defined (_STLP_WIN16) || defined (_STLP_DOS) || defined(N_PLAT_NLM) 117 return ( (_M_openmode & ios_base::binary) != 0 ) 118 ? (__last - __first) 119 : count(__first, __last, '\n') + (__last - __first); 120 #endif 121 } 122 123 // Returns true if we're in binary mode or if we're using an OS or file 124 // system where there is no distinction between text and binary mode. _M_in_binary_mode()125 bool _M_in_binary_mode() const { 126 #if defined (_STLP_UNIX) || defined (_STLP_MAC) || defined(__BEOS__) || defined (__amigaos__) || defined(__SYMBIAN32__) 127 return true; 128 #elif defined (_STLP_WIN32) || defined (_STLP_WIN16) || defined (_STLP_DOS) || defined (_STLP_VM) || defined (__EMX__) || defined(N_PLAT_NLM) 129 return (_M_openmode & ios_base::binary) != 0; 130 #else 131 # error "Port!" 132 #endif 133 } 134 135 static void _S_initialize(); 136 137 protected: // Static data members. 138 static size_t _M_page_size; 139 140 protected: // Data members. 141 _STLP_fd _M_file_id; 142 #if defined (_STLP_USE_STDIO_IO) 143 // for stdio, the whole FILE* is being kept here 144 FILE* _M_file; 145 #endif 146 #if defined (_STLP_USE_WIN32_IO) 147 _STLP_fd _M_view_id; 148 #endif 149 150 ios_base::openmode _M_openmode ; 151 unsigned char _M_is_open ; 152 unsigned char _M_should_close ; 153 unsigned char _M_regular_file ; 154 155 public : __page_size()156 static size_t _STLP_CALL __page_size() { return _M_page_size; } __o_mode()157 int __o_mode() const { return (int)_M_openmode; } __is_open()158 bool __is_open() const { return (_M_is_open !=0 ); } __should_close()159 bool __should_close() const { return (_M_should_close != 0); } __regular_file()160 bool __regular_file() const { return (_M_regular_file != 0); } __get_fd()161 _STLP_fd __get_fd() const { return _M_file_id; } 162 }; 163 164 //---------------------------------------------------------------------- 165 // Class basic_filebuf<>. 166 167 // Forward declaration of two helper classes. 168 template <class _Traits> class _Noconv_input; 169 _STLP_TEMPLATE_NULL 170 class _Noconv_input<char_traits<char> >; 171 172 template <class _Traits> class _Noconv_output; 173 _STLP_TEMPLATE_NULL 174 class _Noconv_output< char_traits<char> >; 175 176 // There is a specialized version of underflow, for basic_filebuf<char>, 177 // in fstream.cxx. 178 179 template <class _CharT, class _Traits> 180 class _Underflow; 181 182 _STLP_TEMPLATE_NULL class _Underflow< char, char_traits<char> >; 183 184 template <class _CharT, class _Traits> 185 class basic_filebuf : public basic_streambuf<_CharT, _Traits> { 186 public: // Types. 187 typedef _CharT char_type; 188 typedef typename _Traits::int_type int_type; 189 typedef typename _Traits::pos_type pos_type; 190 typedef typename _Traits::off_type off_type; 191 typedef _Traits traits_type; 192 193 typedef typename _Traits::state_type _State_type; 194 typedef basic_streambuf<_CharT, _Traits> _Base; 195 typedef basic_filebuf<_CharT, _Traits> _Self; 196 197 public: // Constructors, destructor. 198 basic_filebuf(); 199 ~basic_filebuf(); 200 201 public: // Opening and closing files. is_open()202 bool is_open() const { return _M_base.__is_open(); } 203 open(const char * __s,ios_base::openmode __m)204 _Self* open(const char* __s, ios_base::openmode __m) { 205 return _M_base._M_open(__s, __m) ? this : 0; 206 } 207 208 #if !defined (_STLP_NO_EXTENSIONS) 209 // These two version of open() and file descriptor getter are extensions. open(const char * __s,ios_base::openmode __m,long __protection)210 _Self* open(const char* __s, ios_base::openmode __m, 211 long __protection) { 212 return _M_base._M_open(__s, __m, __protection) ? this : 0; 213 } 214 fd()215 _STLP_fd fd() const { return _M_base.__get_fd(); } 216 217 _Self* open(int __id, ios_base::openmode _Init_mode = ios_base::__default_mode) { 218 return this->_M_open(__id, _Init_mode); 219 } 220 221 # if defined (_STLP_USE_WIN32_IO) 222 _Self* open(_STLP_fd __id, ios_base::openmode _Init_mode = ios_base::__default_mode) { 223 return _M_base._M_open(__id, _Init_mode) ? this : 0; 224 } 225 # endif /* _STLP_USE_WIN32_IO */ 226 227 #endif 228 229 _Self* _M_open(int __id, ios_base::openmode _Init_mode = ios_base::__default_mode) { 230 return _M_base._M_open(__id, _Init_mode) ? this : 0; 231 } 232 233 _Self* close(); 234 235 protected: // Virtual functions from basic_streambuf. 236 virtual streamsize showmanyc(); 237 virtual int_type underflow(); 238 239 virtual int_type pbackfail(int_type = traits_type::eof()); 240 virtual int_type overflow(int_type = traits_type::eof()); 241 242 virtual basic_streambuf<_CharT, _Traits>* setbuf(char_type*, streamsize); 243 virtual pos_type seekoff(off_type, ios_base::seekdir, 244 ios_base::openmode = ios_base::in | ios_base::out); 245 virtual pos_type seekpos(pos_type, 246 ios_base::openmode = ios_base::in | ios_base::out); 247 248 virtual int sync(); 249 virtual void imbue(const locale&); 250 251 private: // Helper functions. 252 253 // Precondition: we are currently in putback input mode. Effect: 254 // switches back to ordinary input mode. _M_exit_putback_mode()255 void _M_exit_putback_mode() { 256 this->setg(_M_saved_eback, _M_saved_gptr, _M_saved_egptr); 257 _M_in_putback_mode = false; 258 } 259 bool _M_switch_to_input_mode(); 260 void _M_exit_input_mode(); 261 bool _M_switch_to_output_mode(); 262 263 int_type _M_input_error(); 264 int_type _M_underflow_aux(); 265 // friend class _Noconv_input<_Traits>; 266 // friend class _Noconv_output<_Traits>; 267 friend class _Underflow<_CharT, _Traits>; 268 269 int_type _M_output_error(); 270 bool _M_unshift(); 271 272 bool _M_allocate_buffers(_CharT* __buf, streamsize __n); 273 bool _M_allocate_buffers(); 274 void _M_deallocate_buffers(); 275 _M_seek_return(off_type __off,_State_type __state)276 pos_type _M_seek_return(off_type __off, _State_type __state) { 277 if (__off != -1) { 278 if (_M_in_input_mode) 279 _M_exit_input_mode(); 280 _M_in_input_mode = false; 281 _M_in_output_mode = false; 282 _M_in_putback_mode = false; 283 _M_in_error_mode = false; 284 this->setg(0, 0, 0); 285 this->setp(0, 0); 286 } 287 288 pos_type __result(__off); 289 __result.state(__state); 290 return __result; 291 } 292 293 bool _M_seek_init(bool __do_unshift); 294 295 void _M_setup_codecvt(const locale&, bool __on_imbue = true); 296 297 private: // Data members used in all modes. 298 299 _Filebuf_base _M_base; 300 301 private: // Locale-related information. 302 303 unsigned char _M_constant_width; 304 unsigned char _M_always_noconv; 305 306 // private: // Mode flags. 307 unsigned char _M_int_buf_dynamic; // True if internal buffer is heap allocated, 308 // false if it was supplied by the user. 309 unsigned char _M_in_input_mode; 310 unsigned char _M_in_output_mode; 311 unsigned char _M_in_error_mode; 312 unsigned char _M_in_putback_mode; 313 314 // Internal buffer: characters seen by the filebuf's clients. 315 _CharT* _M_int_buf; 316 _CharT* _M_int_buf_EOS; 317 318 // External buffer: characters corresponding to the external file. 319 char* _M_ext_buf; 320 char* _M_ext_buf_EOS; 321 322 // The range [_M_ext_buf, _M_ext_buf_converted) contains the external 323 // characters corresponding to the sequence in the internal buffer. The 324 // range [_M_ext_buf_converted, _M_ext_buf_end) contains characters that 325 // have been read into the external buffer but have not been converted 326 // to an internal sequence. 327 char* _M_ext_buf_converted; 328 char* _M_ext_buf_end; 329 330 // State corresponding to beginning of internal buffer. 331 _State_type _M_state; 332 333 private: // Data members used only in input mode. 334 335 // Similar to _M_state except that it corresponds to 336 // the end of the internal buffer instead of the beginning. 337 _State_type _M_end_state; 338 339 // This is a null pointer unless we are in mmap input mode. 340 void* _M_mmap_base; 341 streamoff _M_mmap_len; 342 343 private: // Data members used only in putback mode. 344 _CharT* _M_saved_eback; 345 _CharT* _M_saved_gptr; 346 _CharT* _M_saved_egptr; 347 348 typedef codecvt<_CharT, char, _State_type> _Codecvt; 349 const _Codecvt* _M_codecvt; 350 351 int _M_width; // Width of the encoding (if constant), else 1 352 int _M_max_width; // Largest possible width of single character. 353 354 355 enum { _S_pback_buf_size = 8 }; 356 _CharT _M_pback_buf[_S_pback_buf_size]; 357 358 // for _Noconv_output 359 public: _M_write(char * __buf,ptrdiff_t __n)360 bool _M_write(char* __buf, ptrdiff_t __n) {return _M_base._M_write(__buf, __n); } 361 362 public: 363 int_type _M_do_noconv_input()364 _M_do_noconv_input() { 365 _M_ext_buf_converted = _M_ext_buf_end; 366 /* this-> */ _Base::setg((char_type*)_M_ext_buf, (char_type*)_M_ext_buf, (char_type*)_M_ext_buf_end); 367 return traits_type::to_int_type(*_M_ext_buf); 368 } 369 }; 370 371 #if defined (_STLP_USE_TEMPLATE_EXPORT) 372 _STLP_EXPORT_TEMPLATE_CLASS basic_filebuf<char, char_traits<char> >; 373 # if ! defined (_STLP_NO_WCHAR_T) 374 _STLP_EXPORT_TEMPLATE_CLASS basic_filebuf<wchar_t, char_traits<wchar_t> >; 375 # endif 376 #endif /* _STLP_USE_TEMPLATE_EXPORT */ 377 378 // public: 379 // helper class. 380 template <class _CharT> 381 struct _Filebuf_Tmp_Buf { 382 _CharT* _M_ptr; _Filebuf_Tmp_Buf_Filebuf_Tmp_Buf383 _Filebuf_Tmp_Buf(ptrdiff_t __n) : _M_ptr(0) { _M_ptr = _CHECK_PTR(new _CharT[__n]); } ~_Filebuf_Tmp_Buf_Filebuf_Tmp_Buf384 ~_Filebuf_Tmp_Buf() { delete[] _M_ptr; } 385 }; 386 387 388 // 389 // This class had to be designed very carefully to work 390 // with Visual C++. 391 // 392 template <class _Traits> 393 class _Noconv_output { 394 public: 395 typedef typename _Traits::char_type char_type; _M_doit(basic_filebuf<char_type,_Traits> *,char_type *,char_type *)396 static bool _STLP_CALL _M_doit(basic_filebuf<char_type, _Traits >*, 397 char_type*, char_type*) 398 { return false; } 399 }; 400 401 _STLP_TEMPLATE_NULL 402 class _STLP_CLASS_DECLSPEC _Noconv_output< char_traits<char> > { 403 public: 404 static bool _STLP_CALL _M_doit(basic_filebuf<char,char_traits<char>> * __buf,char * __first,char * __last)405 _M_doit(basic_filebuf<char, char_traits<char> >* __buf, 406 char* __first, char* __last) { 407 ptrdiff_t __n = __last - __first; 408 return (__buf->_M_write(__first, __n)); 409 } 410 }; 411 412 //---------------------------------------------------------------------- 413 // basic_filebuf<> helper functions. 414 415 416 //---------------------------------------- 417 // Helper functions for switching between modes. 418 419 // 420 // This class had to be designed very carefully to work 421 // with Visual C++. 422 // 423 template <class _Traits> 424 class _Noconv_input { 425 public: 426 typedef typename _Traits::int_type int_type; 427 typedef typename _Traits::char_type char_type; 428 429 static inline int_type _STLP_CALL _M_doit(basic_filebuf<char_type,_Traits> *)430 _M_doit(basic_filebuf<char_type, _Traits>*) 431 { return _Traits::eof(); } 432 }; 433 434 _STLP_TEMPLATE_NULL 435 class _Noconv_input<char_traits<char> > { 436 public: 437 static inline int _STLP_CALL _M_doit(basic_filebuf<char,char_traits<char>> * __buf)438 _M_doit(basic_filebuf<char, char_traits<char> >* __buf) { 439 return __buf->_M_do_noconv_input(); 440 } 441 }; 442 443 // underflow() may be called for one of two reasons. (1) We've 444 // been going through the special putback buffer, and we need to move back 445 // to the regular internal buffer. (2) We've exhausted the internal buffer, 446 // and we need to replentish it. 447 template <class _CharT, class _Traits> 448 class _Underflow { 449 public: 450 typedef typename _Traits::int_type int_type; 451 typedef _Traits traits_type; 452 453 static int_type _STLP_CALL _M_doit(basic_filebuf<_CharT, _Traits>* __this); 454 }; 455 456 457 // Specialization of underflow: if the character type is char, maybe 458 // we can use mmap instead of read. 459 _STLP_TEMPLATE_NULL 460 class _STLP_CLASS_DECLSPEC _Underflow< char, char_traits<char> > { 461 public: 462 typedef char_traits<char>::int_type int_type; 463 typedef char_traits<char> traits_type; 464 static int _STLP_CALL _M_doit(basic_filebuf<char, traits_type >* __this); 465 }; 466 467 // There is a specialized version of underflow, for basic_filebuf<char>, 468 // in fstream.cxx. 469 470 template <class _CharT, class _Traits> 471 _STLP_TYPENAME_ON_RETURN_TYPE _Underflow<_CharT, _Traits>::int_type // _STLP_CALL _M_doit(basic_filebuf<_CharT,_Traits> * __this)472 _Underflow<_CharT, _Traits>::_M_doit(basic_filebuf<_CharT, _Traits>* __this) { 473 if (!__this->_M_in_input_mode) { 474 if (!__this->_M_switch_to_input_mode()) 475 return traits_type::eof(); 476 } 477 else if (__this->_M_in_putback_mode) { 478 __this->_M_exit_putback_mode(); 479 if (__this->gptr() != __this->egptr()) { 480 int_type __c = traits_type::to_int_type(*__this->gptr()); 481 return __c; 482 } 483 } 484 485 return __this->_M_underflow_aux(); 486 } 487 488 #if defined (_STLP_USE_TEMPLATE_EXPORT) && !defined (_STLP_NO_WCHAR_T) 489 _STLP_EXPORT_TEMPLATE_CLASS _Underflow<wchar_t, char_traits<wchar_t> >; 490 #endif 491 492 //---------------------------------------------------------------------- 493 // Class basic_ifstream<> 494 495 template <class _CharT, class _Traits> 496 class basic_ifstream : public basic_istream<_CharT, _Traits> { 497 public: // Types 498 typedef _CharT char_type; 499 typedef typename _Traits::int_type int_type; 500 typedef typename _Traits::pos_type pos_type; 501 typedef typename _Traits::off_type off_type; 502 typedef _Traits traits_type; 503 504 typedef basic_ios<_CharT, _Traits> _Basic_ios; 505 typedef basic_istream<_CharT, _Traits> _Base; 506 typedef basic_filebuf<_CharT, _Traits> _Buf; 507 508 public: // Constructors, destructor. 509 basic_ifstream()510 basic_ifstream() : 511 basic_ios<_CharT, _Traits>(), basic_istream<_CharT, _Traits>(0), _M_buf() { 512 this->init(&_M_buf); 513 } 514 515 explicit basic_ifstream(const char* __s, ios_base::openmode __mod = ios_base::in) : 516 basic_ios<_CharT, _Traits>(), basic_istream<_CharT, _Traits>(0), 517 _M_buf() { 518 this->init(&_M_buf); 519 if (!_M_buf.open(__s, __mod | ios_base::in)) 520 this->setstate(ios_base::failbit); 521 } 522 523 #if !defined (_STLP_NO_EXTENSIONS) 524 explicit basic_ifstream(int __id, ios_base::openmode __mod = ios_base::in) : 525 basic_ios<_CharT, _Traits>(), basic_istream<_CharT, _Traits>(0), _M_buf() { 526 this->init(&_M_buf); 527 if (!_M_buf.open(__id, __mod | ios_base::in)) 528 this->setstate(ios_base::failbit); 529 } basic_ifstream(const char * __s,ios_base::openmode __m,long __protection)530 basic_ifstream(const char* __s, ios_base::openmode __m, 531 long __protection) : 532 basic_ios<_CharT, _Traits>(), basic_istream<_CharT, _Traits>(0), _M_buf() { 533 this->init(&_M_buf); 534 if (!_M_buf.open(__s, __m | ios_base::in, __protection)) 535 this->setstate(ios_base::failbit); 536 } 537 538 # if defined (_STLP_USE_WIN32_IO) 539 explicit basic_ifstream(_STLP_fd __id, ios_base::openmode __mod = ios_base::in) : 540 basic_ios<_CharT, _Traits>(), basic_istream<_CharT, _Traits>(0), _M_buf() { 541 this->init(&_M_buf); 542 if (!_M_buf.open(__id, __mod | ios_base::in)) 543 this->setstate(ios_base::failbit); 544 } 545 # endif /* _STLP_USE_WIN32_IO */ 546 #endif 547 ~basic_ifstream()548 ~basic_ifstream() {} 549 550 public: // File and buffer operations. rdbuf()551 basic_filebuf<_CharT, _Traits>* rdbuf() const 552 { return __CONST_CAST(_Buf*,&_M_buf); } 553 is_open()554 bool is_open() { 555 return this->rdbuf()->is_open(); 556 } 557 558 void open(const char* __s, ios_base::openmode __mod = ios_base::in) { 559 if (!this->rdbuf()->open(__s, __mod | ios_base::in)) 560 this->setstate(ios_base::failbit); 561 } 562 close()563 void close() { 564 if (!this->rdbuf()->close()) 565 this->setstate(ios_base::failbit); 566 } 567 568 private: 569 basic_filebuf<_CharT, _Traits> _M_buf; 570 }; 571 572 573 //---------------------------------------------------------------------- 574 // Class basic_ofstream<> 575 576 template <class _CharT, class _Traits> 577 class basic_ofstream : public basic_ostream<_CharT, _Traits> { 578 public: // Types 579 typedef _CharT char_type; 580 typedef typename _Traits::int_type int_type; 581 typedef typename _Traits::pos_type pos_type; 582 typedef typename _Traits::off_type off_type; 583 typedef _Traits traits_type; 584 585 typedef basic_ios<_CharT, _Traits> _Basic_ios; 586 typedef basic_ostream<_CharT, _Traits> _Base; 587 typedef basic_filebuf<_CharT, _Traits> _Buf; 588 589 public: // Constructors, destructor. basic_ofstream()590 basic_ofstream() : 591 basic_ios<_CharT, _Traits>(), 592 basic_ostream<_CharT, _Traits>(0), _M_buf() { 593 this->init(&_M_buf); 594 } 595 explicit basic_ofstream(const char* __s, ios_base::openmode __mod = ios_base::out) 596 : basic_ios<_CharT, _Traits>(), basic_ostream<_CharT, _Traits>(0), _M_buf() { 597 this->init(&_M_buf); 598 if (!_M_buf.open(__s, __mod | ios_base::out)) 599 this->setstate(ios_base::failbit); 600 } 601 602 #if !defined (_STLP_NO_EXTENSIONS) 603 explicit basic_ofstream(int __id, ios_base::openmode __mod = ios_base::out) 604 : basic_ios<_CharT, _Traits>(), basic_ostream<_CharT, _Traits>(0), 605 _M_buf() { 606 this->init(&_M_buf); 607 if (!_M_buf.open(__id, __mod | ios_base::out)) 608 this->setstate(ios_base::failbit); 609 } basic_ofstream(const char * __s,ios_base::openmode __m,long __protection)610 basic_ofstream(const char* __s, ios_base::openmode __m, long __protection) : 611 basic_ios<_CharT, _Traits>(), basic_ostream<_CharT, _Traits>(0), _M_buf() { 612 this->init(&_M_buf); 613 if (!_M_buf.open(__s, __m | ios_base::out, __protection)) 614 this->setstate(ios_base::failbit); 615 } 616 # if defined (_STLP_USE_WIN32_IO) 617 explicit basic_ofstream(_STLP_fd __id, ios_base::openmode __mod = ios_base::out) 618 : basic_ios<_CharT, _Traits>(), basic_ostream<_CharT, _Traits>(0), 619 _M_buf() { 620 this->init(&_M_buf); 621 if (!_M_buf.open(__id, __mod | ios_base::out)) 622 this->setstate(ios_base::failbit); 623 } 624 # endif /* _STLP_USE_WIN32_IO */ 625 #endif 626 ~basic_ofstream()627 ~basic_ofstream() {} 628 629 public: // File and buffer operations. rdbuf()630 basic_filebuf<_CharT, _Traits>* rdbuf() const 631 { return __CONST_CAST(_Buf*,&_M_buf); } 632 is_open()633 bool is_open() { 634 return this->rdbuf()->is_open(); 635 } 636 637 void open(const char* __s, ios_base::openmode __mod= ios_base::out) { 638 if (!this->rdbuf()->open(__s, __mod | ios_base::out)) 639 this->setstate(ios_base::failbit); 640 } 641 close()642 void close() { 643 if (!this->rdbuf()->close()) 644 this->setstate(ios_base::failbit); 645 } 646 647 private: 648 basic_filebuf<_CharT, _Traits> _M_buf; 649 }; 650 651 652 //---------------------------------------------------------------------- 653 // Class basic_fstream<> 654 655 template <class _CharT, class _Traits> 656 class basic_fstream : public basic_iostream<_CharT, _Traits> { 657 public: // Types 658 typedef _CharT char_type; 659 typedef typename _Traits::int_type int_type; 660 typedef typename _Traits::pos_type pos_type; 661 typedef typename _Traits::off_type off_type; 662 typedef _Traits traits_type; 663 664 typedef basic_ios<_CharT, _Traits> _Basic_ios; 665 typedef basic_iostream<_CharT, _Traits> _Base; 666 typedef basic_filebuf<_CharT, _Traits> _Buf; 667 668 public: // Constructors, destructor. 669 basic_fstream()670 basic_fstream() 671 : basic_ios<_CharT, _Traits>(), basic_iostream<_CharT, _Traits>(0), _M_buf() { 672 this->init(&_M_buf); 673 } 674 675 explicit basic_fstream(const char* __s, 676 ios_base::openmode __mod = ios_base::in | ios_base::out) : 677 basic_ios<_CharT, _Traits>(), basic_iostream<_CharT, _Traits>(0), _M_buf() { 678 this->init(&_M_buf); 679 if (!_M_buf.open(__s, __mod)) 680 this->setstate(ios_base::failbit); 681 } 682 683 #if !defined (_STLP_NO_EXTENSIONS) 684 explicit basic_fstream(int __id, 685 ios_base::openmode __mod = ios_base::in | ios_base::out) : 686 basic_ios<_CharT, _Traits>(), basic_iostream<_CharT, _Traits>(0), _M_buf() { 687 this->init(&_M_buf); 688 if (!_M_buf.open(__id, __mod)) 689 this->setstate(ios_base::failbit); 690 } basic_fstream(const char * __s,ios_base::openmode __m,long __protection)691 basic_fstream(const char* __s, ios_base::openmode __m, long __protection) : 692 basic_ios<_CharT, _Traits>(), basic_iostream<_CharT, _Traits>(0), _M_buf() { 693 this->init(&_M_buf); 694 if (!_M_buf.open(__s, __m, __protection)) 695 this->setstate(ios_base::failbit); 696 } 697 # if defined (_STLP_USE_WIN32_IO) 698 explicit basic_fstream(_STLP_fd __id, 699 ios_base::openmode __mod = ios_base::in | ios_base::out) : 700 basic_ios<_CharT, _Traits>(), basic_iostream<_CharT, _Traits>(0), _M_buf() { 701 this->init(&_M_buf); 702 if (!_M_buf.open(__id, __mod)) 703 this->setstate(ios_base::failbit); 704 } 705 # endif /* _STLP_USE_WIN32_IO */ 706 #endif ~basic_fstream()707 ~basic_fstream() {} 708 709 public: // File and buffer operations. 710 rdbuf()711 basic_filebuf<_CharT, _Traits>* rdbuf() const 712 { return __CONST_CAST(_Buf*,&_M_buf); } 713 is_open()714 bool is_open() { 715 return this->rdbuf()->is_open(); 716 } 717 718 void open(const char* __s, 719 ios_base::openmode __mod = 720 ios_base::in | ios_base::out) { 721 if (!this->rdbuf()->open(__s, __mod)) 722 this->setstate(ios_base::failbit); 723 } 724 close()725 void close() { 726 if (!this->rdbuf()->close()) 727 this->setstate(ios_base::failbit); 728 } 729 730 private: 731 basic_filebuf<_CharT, _Traits> _M_buf; 732 733 #if defined (_STLP_MSVC) && (_STLP_MSVC >= 1300 && _STLP_MSVC <= 1310) 734 typedef basic_fstream<_CharT, _Traits> _Self; 735 //explicitely defined as private to avoid warnings: 736 basic_fstream(_Self const&); 737 _Self& operator = (_Self const&); 738 #endif 739 }; 740 741 _STLP_END_NAMESPACE 742 743 #if defined (_STLP_EXPOSE_STREAM_IMPLEMENTATION) && !defined (_STLP_LINK_TIME_INSTANTIATION) 744 # include <stl/_fstream.c> 745 #endif 746 747 _STLP_BEGIN_NAMESPACE 748 749 #if defined (_STLP_USE_TEMPLATE_EXPORT) 750 _STLP_EXPORT_TEMPLATE_CLASS basic_ifstream<char, char_traits<char> >; 751 _STLP_EXPORT_TEMPLATE_CLASS basic_ofstream<char, char_traits<char> >; 752 _STLP_EXPORT_TEMPLATE_CLASS basic_fstream<char, char_traits<char> >; 753 # if ! defined (_STLP_NO_WCHAR_T) 754 _STLP_EXPORT_TEMPLATE_CLASS basic_ifstream<wchar_t, char_traits<wchar_t> >; 755 _STLP_EXPORT_TEMPLATE_CLASS basic_ofstream<wchar_t, char_traits<wchar_t> >; 756 _STLP_EXPORT_TEMPLATE_CLASS basic_fstream<wchar_t, char_traits<wchar_t> >; 757 # endif 758 #endif /* _STLP_USE_TEMPLATE_EXPORT */ 759 760 _STLP_END_NAMESPACE 761 762 #endif /* _STLP_FSTREAM */ 763 764 765 // Local Variables: 766 // mode:C++ 767 // End: 768