Definition at line 52 of file stdio_filebuf.h.
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These are standard types. They permit a standardized way of referring to names of (or names dependant on) the template parameters, which are specific to the implementation. Reimplemented from std::basic_filebuf< _CharT, _Traits >. Definition at line 56 of file stdio_filebuf.h. |
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These are standard types. They permit a standardized way of referring to names of (or names dependant on) the template parameters, which are specific to the implementation. Reimplemented from std::basic_filebuf< _CharT, _Traits >. Definition at line 58 of file stdio_filebuf.h. |
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These are standard types. They permit a standardized way of referring to names of (or names dependant on) the template parameters, which are specific to the implementation. Reimplemented from std::basic_filebuf< _CharT, _Traits >. Definition at line 60 of file stdio_filebuf.h. |
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These are standard types. They permit a standardized way of referring to names of (or names dependant on) the template parameters, which are specific to the implementation. Reimplemented from std::basic_filebuf< _CharT, _Traits >. Definition at line 59 of file stdio_filebuf.h. |
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These are standard types. They permit a standardized way of referring to names of (or names dependant on) the template parameters, which are specific to the implementation. Reimplemented from std::basic_filebuf< _CharT, _Traits >. Definition at line 57 of file stdio_filebuf.h. |
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deferred initialization Definition at line 67 of file stdio_filebuf.h. |
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Definition at line 129 of file stdio_filebuf.h. References std::basic_filebuf< _CharT, _Traits >::_M_file, std::basic_filebuf< _CharT, _Traits >::_M_reading, std::basic_filebuf< _CharT, _Traits >::_M_set_buffer(), and std::basic_filebuf< _CharT, _Traits >::_M_writing. |
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FILE* . The FILE* will not be automatically closed when the stdio_filebuf is closed/destroyed.
Definition at line 145 of file stdio_filebuf.h. References std::basic_filebuf< _CharT, _Traits >::_M_file, std::basic_filebuf< _CharT, _Traits >::_M_reading, std::basic_filebuf< _CharT, _Traits >::_M_set_buffer(), and std::basic_filebuf< _CharT, _Traits >::_M_writing. |
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Closes the external data stream if the file descriptor constructor was used. Definition at line 124 of file stdio_filebuf.h. |
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Closes the currently associated file.
If a "put buffer area" exists, If any operations fail, this function also fails. Definition at line 130 of file fstream.tcc. References std::basic_filebuf< _CharT, _Traits >::_M_destroy_internal_buffer(), std::basic_filebuf< _CharT, _Traits >::_M_file, std::basic_filebuf< _CharT, _Traits >::_M_mode, std::basic_filebuf< _CharT, _Traits >::_M_pback_init, std::basic_filebuf< _CharT, _Traits >::_M_reading, std::basic_filebuf< _CharT, _Traits >::_M_set_buffer(), std::basic_filebuf< _CharT, _Traits >::_M_state_beg, std::basic_filebuf< _CharT, _Traits >::_M_state_cur, std::basic_filebuf< _CharT, _Traits >::_M_state_last, std::basic_filebuf< _CharT, _Traits >::_M_terminate_output(), std::basic_filebuf< _CharT, _Traits >::_M_writing, and std::__basic_file< char >::close(). |
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Access to the get area. These functions are only available to other protected functions, including derived classes.
Definition at line 478 of file streambuf. Referenced by std::basic_filebuf< _CharT, _Traits >::imbue(), std::basic_stringbuf< _CharT, _Traits, _Alloc >::overflow(), std::basic_stringbuf< _CharT, _Traits, _Alloc >::seekoff(), std::basic_filebuf< _CharT, _Traits >::seekoff(), std::basic_stringbuf< _CharT, _Traits, _Alloc >::seekpos(), std::basic_filebuf< _CharT, _Traits >::underflow(), and std::basic_filebuf< _CharT, _Traits >::xsgetn(). |
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Access to the get area. These functions are only available to other protected functions, including derived classes.
Definition at line 484 of file streambuf. Referenced by std::basic_stringbuf< _CharT, _Traits, _Alloc >::seekoff(), std::basic_filebuf< _CharT, _Traits >::seekoff(), std::basic_stringbuf< _CharT, _Traits, _Alloc >::seekpos(), std::basic_stringbuf< _CharT, _Traits, _Alloc >::underflow(), and std::basic_filebuf< _CharT, _Traits >::underflow(). |
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Definition at line 110 of file stdio_filebuf.h. |
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Definition at line 120 of file stdio_filebuf.h. |
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Moving the read position.
Definition at line 494 of file streambuf. Referenced by std::basic_stringbuf< _CharT, _Traits, _Alloc >::seekpos(), and std::basic_filebuf< _CharT, _Traits >::xsgetn(). |
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Locale access.
loc is returned. Otherwise the global locale in effect at the time of construction is returned.
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Access to the get area. These functions are only available to other protected functions, including derived classes.
Definition at line 481 of file streambuf. Referenced by std::basic_filebuf< _CharT, _Traits >::pbackfail(), std::basic_stringbuf< _CharT, _Traits, _Alloc >::seekoff(), and std::basic_filebuf< _CharT, _Traits >::showmanyc(). |
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Looking ahead into the stream.
showmanyc() .
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Returns true if the external file is open.
Definition at line 248 of file fstream. References std::__basic_file< char >::is_open(). |
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Opens an external file.
Table 92, adapted here, gives the relation between openmode combinations and the equivalent fopen() flags. (NB: lines in|out|app and binary|in|out|app per DR 596) +---------------------------------------------------------+ | ios_base Flag combination stdio equivalent | |binary in out trunc app | +---------------------------------------------------------+ | + "w" | | + + "a" | | + + "w" | | + "r" | | + + "r+" | | + + + "w+" | | + + + "a+" | +---------------------------------------------------------+ | + + "wb" | | + + + "ab" | | + + + "wb" | | + + "rb" | | + + + "r+b" | | + + + + "w+b" | | + + + + "a+b" | +---------------------------------------------------------+ Definition at line 96 of file fstream.tcc. References std::basic_filebuf< _CharT, _Traits >::_M_allocate_internal_buffer(), std::basic_filebuf< _CharT, _Traits >::_M_file, std::basic_filebuf< _CharT, _Traits >::_M_mode, std::basic_filebuf< _CharT, _Traits >::_M_reading, std::basic_filebuf< _CharT, _Traits >::_M_set_buffer(), std::basic_filebuf< _CharT, _Traits >::_M_state_beg, std::basic_filebuf< _CharT, _Traits >::_M_state_cur, std::basic_filebuf< _CharT, _Traits >::_M_state_last, std::basic_filebuf< _CharT, _Traits >::_M_writing, std::ios_base::ate, std::ios_base::end, and std::__basic_file< char >::open(). |
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Consumes data from the buffer; writes to the controlled sequence.
eof() .For a formal definiton of this function, see a good text such as Langer & Kreft, or [27.5.2.4.5]/3-7. A functioning output streambuf can be created by overriding only this function (no buffer area will be used).
Reimplemented from std::basic_streambuf< _CharT, _Traits >. Definition at line 392 of file fstream.tcc. References std::basic_filebuf< _CharT, _Traits >::_M_buf_size, std::basic_filebuf< _CharT, _Traits >::_M_convert_to_external(), std::basic_filebuf< _CharT, _Traits >::_M_mode, std::basic_filebuf< _CharT, _Traits >::_M_reading, std::basic_filebuf< _CharT, _Traits >::_M_set_buffer(), std::basic_filebuf< _CharT, _Traits >::_M_writing, std::ios_base::out, std::basic_streambuf< _CharT, _Traits >::pbase(), std::basic_streambuf< _CharT, _Traits >::pbump(), and std::basic_streambuf< _CharT, _Traits >::pptr(). |
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Tries to back up the input sequence.
Reimplemented from std::basic_streambuf< _CharT, _Traits >. Definition at line 340 of file fstream.tcc. References std::basic_filebuf< _CharT, _Traits >::_M_mode, std::basic_filebuf< _CharT, _Traits >::_M_pback_init, std::basic_filebuf< _CharT, _Traits >::_M_writing, std::ios_base::cur, std::basic_streambuf< _CharT, _Traits >::gptr(), and std::ios_base::in. |
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Access to the put area. These functions are only available to other protected functions, including derived classes.
Definition at line 525 of file streambuf. Referenced by std::basic_stringbuf< _CharT, _Traits, _Alloc >::overflow(), std::basic_filebuf< _CharT, _Traits >::overflow(), std::basic_stringbuf< _CharT, _Traits, _Alloc >::seekoff(), std::basic_stringbuf< _CharT, _Traits, _Alloc >::seekpos(), and std::basic_filebuf< _CharT, _Traits >::xsputn(). |
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Moving the write position.
Definition at line 541 of file streambuf. Referenced by std::basic_stringbuf< _CharT, _Traits, _Alloc >::overflow(), std::basic_filebuf< _CharT, _Traits >::overflow(), std::basic_stringbuf< _CharT, _Traits, _Alloc >::seekpos(), and std::basic_streambuf< _CharT, _Traits >::xsputn(). |
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Entry point for imbue().
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Locale access.
loc is returned. Otherwise the global locale in effect at the time of construction is returned.
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Locale access.
loc is returned. Otherwise the global locale in effect at the time of construction is returned.
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Entry points for derived buffer functions.
The public versions of |
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Locale access.
loc is returned. Otherwise the global locale in effect at the time of construction is returned.
Definition at line 268 of file streambuf. Referenced by std::basic_istream< _CharT, _Traits >::sync(). |
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Getting the next character.
uflow() .
Definition at line 313 of file streambuf. Referenced by std::basic_istream< _CharT, _Traits >::getline(), std::basic_istream< _CharT, _Traits >::ignore(), std::istreambuf_iterator< _CharT, _Traits >::operator++(), and std::operator>>(). |
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Alters the stream positions. Each derived class provides its own appropriate behavior.
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Alters the stream positions. Each derived class provides its own appropriate behavior.
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Manipulates the buffer.
s is used as a buffer; see http://gcc.gnu.org/onlinedocs/libstdc++/27_io/howto.html#2 for more.
Reimplemented from std::basic_streambuf< _CharT, _Traits >. Definition at line 641 of file fstream.tcc. References std::basic_filebuf< _CharT, _Traits >::_M_buf, and std::basic_filebuf< _CharT, _Traits >::_M_buf_size. |
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Setting the three read area pointers.
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Setting the three write area pointers.
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Getting the next character.
underflow() . Does not move the read position after fetching the character.
Definition at line 335 of file streambuf. Referenced by std::__copy_streambufs_eof(), std::basic_istream< _CharT, _Traits >::get(), std::basic_istream< _CharT, _Traits >::getline(), std::basic_istream< _CharT, _Traits >::ignore(), and std::basic_istream< _CharT, _Traits >::sentry::sentry(). |
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Entry point for xsgetn.
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Investigating the data available.
underflow() will not return traits::eof() until at least that number of characters have been supplied. If showmanyc() returns -1, then calls to underflow() or uflow() will fail." [27.5.2.4.3]/1
Reimplemented from std::basic_streambuf< _CharT, _Traits >. Definition at line 165 of file fstream.tcc. References std::__check_facet(), std::basic_filebuf< _CharT, _Traits >::_M_codecvt, std::basic_filebuf< _CharT, _Traits >::_M_file, std::basic_filebuf< _CharT, _Traits >::_M_mode, std::ios_base::binary, std::basic_streambuf< _CharT, _Traits >::gptr(), std::ios_base::in, and std::__basic_file< char >::showmanyc(). |
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Getting the next character.
sbumpc() , and if that function returns traits::eof() , so does this function. Otherwise, sgetc() .
Definition at line 295 of file streambuf. Referenced by std::__copy_streambufs_eof(), std::basic_istream< _CharT, _Traits >::get(), std::basic_istream< _CharT, _Traits >::getline(), std::basic_istream< _CharT, _Traits >::ignore(), and std::basic_istream< _CharT, _Traits >::sentry::sentry(). |
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Pushing characters back into the input stream.
Definition at line 368 of file streambuf. Referenced by std::operator>>(), and std::basic_istream< _CharT, _Traits >::putback(). |
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Entry point for all single-character output functions.
If a write position is available for the output sequence (i.e., the buffer is not full), stores c in that position, increments the position, and returns Definition at line 420 of file streambuf. Referenced by std::__copy_streambufs_eof(), std::basic_istream< _CharT, _Traits >::get(), and std::ostreambuf_iterator< _CharT, _Traits >::operator=(). |
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Entry point for all single-character output functions.
Returns xsputn(s,n). The effect is to write s[0] through s[n-1] to the output sequence, if possible. |
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Tosses a character. Advances the read pointer, ignoring the character that would have been read. See http://gcc.gnu.org/ml/libstdc++/2002-05/msg00168.html
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Moving backwards in the input stream.
Definition at line 393 of file streambuf. Referenced by std::basic_istream< _CharT, _Traits >::unget(). |
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Synchronizes the buffer arrays with the controlled sequences.
Reimplemented from std::basic_streambuf< _CharT, _Traits >. Definition at line 820 of file fstream.tcc. References std::basic_streambuf< _CharT, _Traits >::pptr(). |
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Fetches more data from the controlled sequence.
underflow() , and in fact is required to call that function. It also returns the new character, like underflow() does. However, this function also moves the read position forward by one.
Reimplemented in __gnu_cxx::stdio_sync_filebuf< _CharT, _Traits >. |
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Fetches more data from the controlled sequence.
traits::eof() to indicate a null pending sequence.For a formal definiton of the pending sequence, see a good text such as Langer & Kreft, or [27.5.2.4.3]/7-14. A functioning input streambuf can be created by overriding only this function (no buffer area will be used). For an example, see http://gcc.gnu.org/onlinedocs/libstdc++/27_io/howto.html#6
Reimplemented from std::basic_streambuf< _CharT, _Traits >. Definition at line 191 of file fstream.tcc. References std::__check_facet(), __N, std::basic_filebuf< _CharT, _Traits >::_M_buf_size, std::basic_filebuf< _CharT, _Traits >::_M_codecvt, std::basic_filebuf< _CharT, _Traits >::_M_destroy_pback(), std::basic_filebuf< _CharT, _Traits >::_M_ext_buf, std::basic_filebuf< _CharT, _Traits >::_M_ext_buf_size, std::basic_filebuf< _CharT, _Traits >::_M_ext_end, std::basic_filebuf< _CharT, _Traits >::_M_ext_next, std::basic_filebuf< _CharT, _Traits >::_M_file, std::basic_filebuf< _CharT, _Traits >::_M_mode, std::basic_filebuf< _CharT, _Traits >::_M_reading, std::basic_filebuf< _CharT, _Traits >::_M_set_buffer(), std::basic_filebuf< _CharT, _Traits >::_M_state_cur, std::basic_filebuf< _CharT, _Traits >::_M_state_last, std::basic_filebuf< _CharT, _Traits >::_M_writing, std::basic_streambuf< _CharT, _Traits >::eback(), std::basic_streambuf< _CharT, _Traits >::egptr(), std::__codecvt_abstract_base< _InternT, _ExternT, _StateT >::encoding(), std::__codecvt_abstract_base< _InternT, _ExternT, _StateT >::in(), std::ios_base::in, std::__codecvt_abstract_base< _InternT, _ExternT, _StateT >::max_length(), std::min(), and std::__basic_file< char >::xsgetn(). |
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Multiple character extraction.
sbumpc() . Stops when either n characters have been copied, or when traits::eof() would be copied.It is expected that derived classes provide a more efficient implementation by overriding this definition. Reimplemented from std::basic_streambuf< _CharT, _Traits >. Definition at line 511 of file fstream.tcc. References std::basic_filebuf< _CharT, _Traits >::_M_destroy_pback(), std::basic_filebuf< _CharT, _Traits >::_M_pback_init, std::basic_streambuf< _CharT, _Traits >::eback(), and std::basic_streambuf< _CharT, _Traits >::gbump(). |
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Multiple character insertion.
sputc() . Stops when either n characters have been copied, or when sputc() would return traits::eof() .It is expected that derived classes provide a more efficient implementation by overriding this definition. Reimplemented from std::basic_streambuf< _CharT, _Traits >. Definition at line 594 of file fstream.tcc. References std::__check_facet(), std::basic_filebuf< _CharT, _Traits >::_M_buf_size, std::basic_filebuf< _CharT, _Traits >::_M_codecvt, std::basic_filebuf< _CharT, _Traits >::_M_file, std::basic_filebuf< _CharT, _Traits >::_M_mode, std::basic_filebuf< _CharT, _Traits >::_M_reading, std::basic_filebuf< _CharT, _Traits >::_M_set_buffer(), std::basic_filebuf< _CharT, _Traits >::_M_writing, std::basic_streambuf< _CharT, _Traits >::epptr(), std::min(), std::ios_base::out, std::basic_streambuf< _CharT, _Traits >::pbase(), std::basic_streambuf< _CharT, _Traits >::pptr(), std::basic_streambuf< _CharT, _Traits >::xsputn(), and std::__basic_file< char >::xsputn_2(). |
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Locale access.
loc is returned. Otherwise the global locale in effect at the time of construction is returned.
Definition at line 207 of file streambuf. Referenced by std::basic_filebuf< _CharT, _Traits >::basic_filebuf(). |
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Locale access.
loc is returned. Otherwise the global locale in effect at the time of construction is returned.
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Locale access.
loc is returned. Otherwise the global locale in effect at the time of construction is returned.
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Locale access.
loc is returned. Otherwise the global locale in effect at the time of construction is returned.
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Locale access.
loc is returned. Otherwise the global locale in effect at the time of construction is returned.
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Locale access.
loc is returned. Otherwise the global locale in effect at the time of construction is returned.
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Locale access.
loc is returned. Otherwise the global locale in effect at the time of construction is returned.
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