diff options
| author | bkoz <bkoz@138bc75d-0d04-0410-961f-82ee72b054a4> | 2006-12-07 09:35:57 +0000 |
|---|---|---|
| committer | bkoz <bkoz@138bc75d-0d04-0410-961f-82ee72b054a4> | 2006-12-07 09:35:57 +0000 |
| commit | 0fe3068e3b47285bb5c21d6b19cf76ededffc68f (patch) | |
| tree | 076de9fd1585847daacdaac6c30b78058cce3aa0 /libstdc++-v3/include/std/std_fstream.h | |
| parent | 2f603cf0eb135bf67ff0bb570452df725a43c9ce (diff) | |
| download | ppe42-gcc-0fe3068e3b47285bb5c21d6b19cf76ededffc68f.tar.gz ppe42-gcc-0fe3068e3b47285bb5c21d6b19cf76ededffc68f.zip | |
2006-12-06 Benjamin Kosnik <bkoz@redhat.com>
* include/Makefile.am (std_headers_rename): Remove.
(c_base_headers_rename): Remove.
(std_headers): Adjust to true names.
(c_base_headers): Adjust to true names.
(stamp-c_base, stamp_std, stamp_c_base_extra): Adjust.
* configure: Regenerate.
* include/Makefile.in: Regenerate.
* include/std/std_algorithm.h: To...
* include/std/std_bitset.h: To...
* include/std/std_complex.h: To...
* include/std/std_deque.h: To...
* include/std/std_fstream.h: To...
* include/std/std_functional.h: To...
* include/std/std_iomanip.h: To...
* include/std/std_iosfwd.h: To...
* include/std/std_ios.h: To...
* include/std/std_iostream.h: To...
* include/std/std_istream.h: To...
* include/std/std_iterator.h: To...
* include/std/std_limits.h: To...
* include/std/std_list.h: To...
* include/std/std_locale.h: To...
* include/std/std_map.h: To...
* include/std/std_memory.h: To...
* include/std/std_numeric.h: To...
* include/std/std_ostream.h: To...
* include/std/std_queue.h: To...
* include/std/std_set.h: To...
* include/std/std_sstream.h: To...
* include/std/std_stack.h: To...
* include/std/std_stdexcept.h: To...
* include/std/std_streambuf.h: To...
* include/std/std_string.h: To...
* include/std/std_utility.h: To...
* include/std/std_valarray.h: To...
* include/std/std_vector.h: To...
* include/std/algorithm: ...this.
* include/std/bitset: ...this.
* include/std/complex: ...this.
* include/std/deque: ...this.
* include/std/fstream: ...this.
* include/std/functional: ...this.
* include/std/iomanip: ...this.
* include/std/iosfwd: ...this.
* include/std/ios: ...this.
* include/std/iostream: ...this.
* include/std/istream: ...this.
* include/std/iterator: ...this.
* include/std/limits: ...this.
* include/std/list: ...this.
* include/std/locale: ...this.
* include/std/map: ...this.
* include/std/memory: ...this.
* include/std/numeric: ...this.
* include/std/ostream: ...this.
* include/std/queue: ...this.
* include/std/set: ...this.
* include/std/sstream: ...this.
* include/std/stack: ...this.
* include/std/stdexcept: ...this.
* include/std/streambuf: ...this.
* include/std/string: ...this.
* include/std/utility: ...this.
* include/std/valarray: ...this.
* include/std/vector: ...this.
* include/c_std/std_cassert.h: To...
* include/c_std/std_cctype.h: To...
* include/c_std/std_cerrno.h: To...
* include/c_std/std_cfloat.h: To...
* include/c_std/std_ciso646.h: To...
* include/c_std/std_climits.h: To...
* include/c_std/std_clocale.h: To...
* include/c_std/std_cmath.h: To...
* include/c_std/std_csetjmp.h: To...
* include/c_std/std_csignal.h: To...
* include/c_std/std_cstdarg.h: To...
* include/c_std/std_cstddef.h: To...
* include/c_std/std_cstdio.h: To...
* include/c_std/std_cstdlib.h: To...
* include/c_std/std_cstring.h: To...
* include/c_std/std_ctime.h: To...
* include/c_std/std_cwchar.h: To...
* include/c_std/std_cwctype.h: To...
* include/c_std/cassert: ...this.
* include/c_std/cctype: ...this.
* include/c_std/cerrno: ...this.
* include/c_std/cfloat: ...this.
* include/c_std/ciso646: ...this.
* include/c_std/climits: ...this.
* include/c_std/clocale: ...this.
* include/c_std/cmath: ...this.
* include/c_std/csetjmp: ...this.
* include/c_std/csignal: ...this.
* include/c_std/cstdarg: ...this.
* include/c_std/cstddef: ...this.
* include/c_std/cstdio: ...this.
* include/c_std/cstdlib: ...this.
* include/c_std/cstring: ...this.
* include/c_std/ctime: ...this.
* include/c_std/cwchar: ...this.
* include/c_std/cwctype: ...this.
* include/c/std_cassert.h: To...
* include/c/std_cctype.h: To...
* include/c/std_cerrno.h: To...
* include/c/std_cfloat.h: To...
* include/c/std_ciso646.h: To...
* include/c/std_climits.h: To...
* include/c/std_clocale.h: To...
* include/c/std_cmath.h: To...
* include/c/std_csetjmp.h: To...
* include/c/std_csignal.h: To...
* include/c/std_cstdarg.h: To...
* include/c/std_cstddef.h: To...
* include/c/std_cstdio.h: To...
* include/c/std_cstdlib.h: To...
* include/c/std_cstring.h: To...
* include/c/std_ctime.h: To...
* include/c/std_cwchar.h: To...
* include/c/std_cwctype.h: To...
* include/c/cassert: ...this.
* include/c/cctype: ...this.
* include/c/cerrno: ...this.
* include/c/cfloat: ...this.
* include/c/ciso646: ...this.
* include/c/climits: ...this.
* include/c/clocale: ...this.
* include/c/cmath: ...this.
* include/c/csetjmp: ...this.
* include/c/csignal: ...this.
* include/c/cstdarg: ...this.
* include/c/cstddef: ...this.
* include/c/cstdio: ...this.
* include/c/cstdlib: ...this.
* include/c/cstring: ...this.
* include/c/ctime: ...this.
* include/c/cwchar: ...this.
* include/c/cwctype: ...this.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@119611 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'libstdc++-v3/include/std/std_fstream.h')
| -rw-r--r-- | libstdc++-v3/include/std/std_fstream.h | 786 |
1 files changed, 0 insertions, 786 deletions
diff --git a/libstdc++-v3/include/std/std_fstream.h b/libstdc++-v3/include/std/std_fstream.h deleted file mode 100644 index f664f2de9f4..00000000000 --- a/libstdc++-v3/include/std/std_fstream.h +++ /dev/null @@ -1,786 +0,0 @@ -// File based streams -*- C++ -*- - -// Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005 -// Free Software Foundation, Inc. -// -// This file is part of the GNU ISO C++ Library. This library is free -// software; you can redistribute it and/or modify it under the -// terms of the GNU General Public License as published by the -// Free Software Foundation; either version 2, or (at your option) -// any later version. - -// This library is distributed in the hope that it will be useful, -// but WITHOUT ANY WARRANTY; without even the implied warranty of -// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -// GNU General Public License for more details. - -// You should have received a copy of the GNU General Public License along -// with this library; see the file COPYING. If not, write to the Free -// Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, -// USA. - -// As a special exception, you may use this file as part of a free software -// library without restriction. Specifically, if other files instantiate -// templates or use macros or inline functions from this file, or you compile -// this file and link it with other files to produce an executable, this -// file does not by itself cause the resulting executable to be covered by -// the GNU General Public License. This exception does not however -// invalidate any other reasons why the executable file might be covered by -// the GNU General Public License. - -/** @file fstream - * This is a Standard C++ Library header. - */ - -// -// ISO C++ 14882: 27.8 File-based streams -// - -#ifndef _GLIBCXX_FSTREAM -#define _GLIBCXX_FSTREAM 1 - -#pragma GCC system_header - -#include <istream> -#include <ostream> -#include <locale> // For codecvt -#include <cstdio> // For SEEK_SET, SEEK_CUR, SEEK_END, BUFSIZ -#include <bits/basic_file.h> -#include <bits/gthr.h> - -_GLIBCXX_BEGIN_NAMESPACE(std) - - // [27.8.1.1] template class basic_filebuf - /** - * @brief The actual work of input and output (for files). - * - * This class associates both its input and output sequence with an - * external disk file, and maintains a joint file position for both - * sequences. Many of its sematics are described in terms of similar - * behavior in the Standard C Library's @c FILE streams. - */ - // Requirements on traits_type, specific to this class: - // traits_type::pos_type must be fpos<traits_type::state_type> - // traits_type::off_type must be streamoff - // traits_type::state_type must be Assignable and DefaultConstructable, - // and traits_type::state_type() must be the initial state for codecvt. - template<typename _CharT, typename _Traits> - class basic_filebuf : public basic_streambuf<_CharT, _Traits> - { - public: - // Types: - typedef _CharT char_type; - typedef _Traits traits_type; - typedef typename traits_type::int_type int_type; - typedef typename traits_type::pos_type pos_type; - typedef typename traits_type::off_type off_type; - - typedef basic_streambuf<char_type, traits_type> __streambuf_type; - typedef basic_filebuf<char_type, traits_type> __filebuf_type; - typedef __basic_file<char> __file_type; - typedef typename traits_type::state_type __state_type; - typedef codecvt<char_type, char, __state_type> __codecvt_type; - - friend class ios_base; // For sync_with_stdio. - - protected: - // Data Members: - // MT lock inherited from libio or other low-level io library. - __c_lock _M_lock; - - // External buffer. - __file_type _M_file; - - /** - * @if maint - * Place to stash in || out || in | out settings for current filebuf. - * @endif - */ - ios_base::openmode _M_mode; - - // Beginning state type for codecvt. - __state_type _M_state_beg; - - // During output, the state that corresponds to pptr(), - // during input, the state that corresponds to egptr() and - // _M_ext_next. - __state_type _M_state_cur; - - // Not used for output. During input, the state that corresponds - // to eback() and _M_ext_buf. - __state_type _M_state_last; - - /** - * @if maint - * Pointer to the beginning of internal buffer. - * @endif - */ - char_type* _M_buf; - - /** - * @if maint - * Actual size of internal buffer. This number is equal to the size - * of the put area + 1 position, reserved for the overflow char of - * a full area. - * @endif - */ - size_t _M_buf_size; - - // Set iff _M_buf is allocated memory from _M_allocate_internal_buffer. - bool _M_buf_allocated; - - /** - * @if maint - * _M_reading == false && _M_writing == false for 'uncommitted' mode; - * _M_reading == true for 'read' mode; - * _M_writing == true for 'write' mode; - * - * NB: _M_reading == true && _M_writing == true is unused. - * @endif - */ - bool _M_reading; - bool _M_writing; - - //@{ - /** - * @if maint - * Necessary bits for putback buffer management. - * - * @note pbacks of over one character are not currently supported. - * @endif - */ - char_type _M_pback; - char_type* _M_pback_cur_save; - char_type* _M_pback_end_save; - bool _M_pback_init; - //@} - - // Cached codecvt facet. - const __codecvt_type* _M_codecvt; - - /** - * @if maint - * Buffer for external characters. Used for input when - * codecvt::always_noconv() == false. When valid, this corresponds - * to eback(). - * @endif - */ - char* _M_ext_buf; - - /** - * @if maint - * Size of buffer held by _M_ext_buf. - * @endif - */ - streamsize _M_ext_buf_size; - - /** - * @if maint - * Pointers into the buffer held by _M_ext_buf that delimit a - * subsequence of bytes that have been read but not yet converted. - * When valid, _M_ext_next corresponds to egptr(). - * @endif - */ - const char* _M_ext_next; - char* _M_ext_end; - - /** - * @if maint - * Initializes pback buffers, and moves normal buffers to safety. - * Assumptions: - * _M_in_cur has already been moved back - * @endif - */ - void - _M_create_pback() - { - if (!_M_pback_init) - { - _M_pback_cur_save = this->gptr(); - _M_pback_end_save = this->egptr(); - this->setg(&_M_pback, &_M_pback, &_M_pback + 1); - _M_pback_init = true; - } - } - - /** - * @if maint - * Deactivates pback buffer contents, and restores normal buffer. - * Assumptions: - * The pback buffer has only moved forward. - * @endif - */ - void - _M_destroy_pback() throw() - { - if (_M_pback_init) - { - // Length _M_in_cur moved in the pback buffer. - _M_pback_cur_save += this->gptr() != this->eback(); - this->setg(_M_buf, _M_pback_cur_save, _M_pback_end_save); - _M_pback_init = false; - } - } - - public: - // Constructors/destructor: - /** - * @brief Does not open any files. - * - * The default constructor initializes the parent class using its - * own default ctor. - */ - basic_filebuf(); - - /** - * @brief The destructor closes the file first. - */ - virtual - ~basic_filebuf() - { this->close(); } - - // Members: - /** - * @brief Returns true if the external file is open. - */ - bool - is_open() const throw() - { return _M_file.is_open(); } - - /** - * @brief Opens an external file. - * @param s The name of the file. - * @param mode The open mode flags. - * @return @c this on success, NULL on failure - * - * If a file is already open, this function immediately fails. - * Otherwise it tries to open the file named @a s using the flags - * given in @a mode. - * - * [Table 92 gives the relation between openmode combinations and the - * equivalent fopen() flags, but the table has not been copied yet.] - */ - __filebuf_type* - open(const char* __s, ios_base::openmode __mode); - - /** - * @brief Closes the currently associated file. - * @return @c this on success, NULL on failure - * - * If no file is currently open, this function immediately fails. - * - * If a "put buffer area" exists, @c overflow(eof) is called to flush - * all the characters. The file is then closed. - * - * If any operations fail, this function also fails. - */ - __filebuf_type* - close() throw(); - - protected: - void - _M_allocate_internal_buffer(); - - void - _M_destroy_internal_buffer() throw(); - - // [27.8.1.4] overridden virtual functions - virtual streamsize - showmanyc(); - - // Stroustrup, 1998, p. 628 - // underflow() and uflow() functions are called to get the next - // charater from the real input source when the buffer is empty. - // Buffered input uses underflow() - - virtual int_type - underflow(); - - virtual int_type - pbackfail(int_type __c = _Traits::eof()); - - // Stroustrup, 1998, p 648 - // The overflow() function is called to transfer characters to the - // real output destination when the buffer is full. A call to - // overflow(c) outputs the contents of the buffer plus the - // character c. - // 27.5.2.4.5 - // Consume some sequence of the characters in the pending sequence. - virtual int_type - overflow(int_type __c = _Traits::eof()); - - // Convert internal byte sequence to external, char-based - // sequence via codecvt. - bool - _M_convert_to_external(char_type*, streamsize); - - /** - * @brief Manipulates the buffer. - * @param s Pointer to a buffer area. - * @param n Size of @a s. - * @return @c this - * - * If no file has been opened, and both @a s and @a n are zero, then - * the stream becomes unbuffered. Otherwise, @c s is used as a - * buffer; see - * http://gcc.gnu.org/onlinedocs/libstdc++/27_io/howto.html#2 - * for more. - */ - virtual __streambuf_type* - setbuf(char_type* __s, streamsize __n); - - virtual pos_type - seekoff(off_type __off, ios_base::seekdir __way, - ios_base::openmode __mode = ios_base::in | ios_base::out); - - virtual pos_type - seekpos(pos_type __pos, - ios_base::openmode __mode = ios_base::in | ios_base::out); - - // Common code for seekoff and seekpos - pos_type - _M_seek(off_type __off, ios_base::seekdir __way, __state_type __state); - - virtual int - sync(); - - virtual void - imbue(const locale& __loc); - - virtual streamsize - xsgetn(char_type* __s, streamsize __n); - - virtual streamsize - xsputn(const char_type* __s, streamsize __n); - - // Flushes output buffer, then writes unshift sequence. - bool - _M_terminate_output(); - - /** - * @if maint - * This function sets the pointers of the internal buffer, both get - * and put areas. Typically: - * - * __off == egptr() - eback() upon underflow/uflow ('read' mode); - * __off == 0 upon overflow ('write' mode); - * __off == -1 upon open, setbuf, seekoff/pos ('uncommitted' mode). - * - * NB: epptr() - pbase() == _M_buf_size - 1, since _M_buf_size - * reflects the actual allocated memory and the last cell is reserved - * for the overflow char of a full put area. - * @endif - */ - void - _M_set_buffer(streamsize __off) - { - const bool __testin = _M_mode & ios_base::in; - const bool __testout = _M_mode & ios_base::out; - - if (__testin && __off > 0) - this->setg(_M_buf, _M_buf, _M_buf + __off); - else - this->setg(_M_buf, _M_buf, _M_buf); - - if (__testout && __off == 0 && _M_buf_size > 1 ) - this->setp(_M_buf, _M_buf + _M_buf_size - 1); - else - this->setp(NULL, NULL); - } - }; - - // [27.8.1.5] Template class basic_ifstream - /** - * @brief Controlling input for files. - * - * This class supports reading from named files, using the inherited - * functions from std::basic_istream. To control the associated - * sequence, an instance of std::basic_filebuf is used, which this page - * refers to as @c sb. - */ - template<typename _CharT, typename _Traits> - class basic_ifstream : public basic_istream<_CharT, _Traits> - { - public: - // Types: - typedef _CharT char_type; - typedef _Traits traits_type; - typedef typename traits_type::int_type int_type; - typedef typename traits_type::pos_type pos_type; - typedef typename traits_type::off_type off_type; - - // Non-standard types: - typedef basic_filebuf<char_type, traits_type> __filebuf_type; - typedef basic_istream<char_type, traits_type> __istream_type; - - private: - __filebuf_type _M_filebuf; - - public: - // Constructors/Destructors: - /** - * @brief Default constructor. - * - * Initializes @c sb using its default constructor, and passes - * @c &sb to the base class initializer. Does not open any files - * (you haven't given it a filename to open). - */ - basic_ifstream() : __istream_type(), _M_filebuf() - { this->init(&_M_filebuf); } - - /** - * @brief Create an input file stream. - * @param s Null terminated string specifying the filename. - * @param mode Open file in specified mode (see std::ios_base). - * - * @c ios_base::in is automatically included in @a mode. - * - * Tip: When using std::string to hold the filename, you must use - * .c_str() before passing it to this constructor. - */ - explicit - basic_ifstream(const char* __s, ios_base::openmode __mode = ios_base::in) - : __istream_type(), _M_filebuf() - { - this->init(&_M_filebuf); - this->open(__s, __mode); - } - - /** - * @brief The destructor does nothing. - * - * The file is closed by the filebuf object, not the formatting - * stream. - */ - ~basic_ifstream() - { } - - // Members: - /** - * @brief Accessing the underlying buffer. - * @return The current basic_filebuf buffer. - * - * This hides both signatures of std::basic_ios::rdbuf(). - */ - __filebuf_type* - rdbuf() const - { return const_cast<__filebuf_type*>(&_M_filebuf); } - - /** - * @brief Wrapper to test for an open file. - * @return @c rdbuf()->is_open() - */ - bool - is_open() - { return _M_filebuf.is_open(); } - - // _GLIBCXX_RESOLVE_LIB_DEFECTS - // 365. Lack of const-qualification in clause 27 - bool - is_open() const - { return _M_filebuf.is_open(); } - - /** - * @brief Opens an external file. - * @param s The name of the file. - * @param mode The open mode flags. - * - * Calls @c std::basic_filebuf::open(s,mode|in). If that function - * fails, @c failbit is set in the stream's error state. - * - * Tip: When using std::string to hold the filename, you must use - * .c_str() before passing it to this constructor. - */ - void - open(const char* __s, ios_base::openmode __mode = ios_base::in) - { - if (!_M_filebuf.open(__s, __mode | ios_base::in)) - this->setstate(ios_base::failbit); - else - // _GLIBCXX_RESOLVE_LIB_DEFECTS - // 409. Closing an fstream should clear error state - this->clear(); - } - - /** - * @brief Close the file. - * - * Calls @c std::basic_filebuf::close(). If that function - * fails, @c failbit is set in the stream's error state. - */ - void - close() - { - if (!_M_filebuf.close()) - this->setstate(ios_base::failbit); - } - }; - - - // [27.8.1.8] Template class basic_ofstream - /** - * @brief Controlling output for files. - * - * This class supports reading from named files, using the inherited - * functions from std::basic_ostream. To control the associated - * sequence, an instance of std::basic_filebuf is used, which this page - * refers to as @c sb. - */ - template<typename _CharT, typename _Traits> - class basic_ofstream : public basic_ostream<_CharT,_Traits> - { - public: - // Types: - typedef _CharT char_type; - typedef _Traits traits_type; - typedef typename traits_type::int_type int_type; - typedef typename traits_type::pos_type pos_type; - typedef typename traits_type::off_type off_type; - - // Non-standard types: - typedef basic_filebuf<char_type, traits_type> __filebuf_type; - typedef basic_ostream<char_type, traits_type> __ostream_type; - - private: - __filebuf_type _M_filebuf; - - public: - // Constructors: - /** - * @brief Default constructor. - * - * Initializes @c sb using its default constructor, and passes - * @c &sb to the base class initializer. Does not open any files - * (you haven't given it a filename to open). - */ - basic_ofstream(): __ostream_type(), _M_filebuf() - { this->init(&_M_filebuf); } - - /** - * @brief Create an output file stream. - * @param s Null terminated string specifying the filename. - * @param mode Open file in specified mode (see std::ios_base). - * - * @c ios_base::out|ios_base::trunc is automatically included in - * @a mode. - * - * Tip: When using std::string to hold the filename, you must use - * .c_str() before passing it to this constructor. - */ - explicit - basic_ofstream(const char* __s, - ios_base::openmode __mode = ios_base::out|ios_base::trunc) - : __ostream_type(), _M_filebuf() - { - this->init(&_M_filebuf); - this->open(__s, __mode); - } - - /** - * @brief The destructor does nothing. - * - * The file is closed by the filebuf object, not the formatting - * stream. - */ - ~basic_ofstream() - { } - - // Members: - /** - * @brief Accessing the underlying buffer. - * @return The current basic_filebuf buffer. - * - * This hides both signatures of std::basic_ios::rdbuf(). - */ - __filebuf_type* - rdbuf() const - { return const_cast<__filebuf_type*>(&_M_filebuf); } - - /** - * @brief Wrapper to test for an open file. - * @return @c rdbuf()->is_open() - */ - bool - is_open() - { return _M_filebuf.is_open(); } - - // _GLIBCXX_RESOLVE_LIB_DEFECTS - // 365. Lack of const-qualification in clause 27 - bool - is_open() const - { return _M_filebuf.is_open(); } - - /** - * @brief Opens an external file. - * @param s The name of the file. - * @param mode The open mode flags. - * - * Calls @c std::basic_filebuf::open(s,mode|out|trunc). If that - * function fails, @c failbit is set in the stream's error state. - * - * Tip: When using std::string to hold the filename, you must use - * .c_str() before passing it to this constructor. - */ - void - open(const char* __s, - ios_base::openmode __mode = ios_base::out | ios_base::trunc) - { - if (!_M_filebuf.open(__s, __mode | ios_base::out)) - this->setstate(ios_base::failbit); - else - // _GLIBCXX_RESOLVE_LIB_DEFECTS - // 409. Closing an fstream should clear error state - this->clear(); - } - - /** - * @brief Close the file. - * - * Calls @c std::basic_filebuf::close(). If that function - * fails, @c failbit is set in the stream's error state. - */ - void - close() - { - if (!_M_filebuf.close()) - this->setstate(ios_base::failbit); - } - }; - - - // [27.8.1.11] Template class basic_fstream - /** - * @brief Controlling intput and output for files. - * - * This class supports reading from and writing to named files, using - * the inherited functions from std::basic_iostream. To control the - * associated sequence, an instance of std::basic_filebuf is used, which - * this page refers to as @c sb. - */ - template<typename _CharT, typename _Traits> - class basic_fstream : public basic_iostream<_CharT, _Traits> - { - public: - // Types: - typedef _CharT char_type; - typedef _Traits traits_type; - typedef typename traits_type::int_type int_type; - typedef typename traits_type::pos_type pos_type; - typedef typename traits_type::off_type off_type; - - // Non-standard types: - typedef basic_filebuf<char_type, traits_type> __filebuf_type; - typedef basic_ios<char_type, traits_type> __ios_type; - typedef basic_iostream<char_type, traits_type> __iostream_type; - - private: - __filebuf_type _M_filebuf; - - public: - // Constructors/destructor: - /** - * @brief Default constructor. - * - * Initializes @c sb using its default constructor, and passes - * @c &sb to the base class initializer. Does not open any files - * (you haven't given it a filename to open). - */ - basic_fstream() - : __iostream_type(), _M_filebuf() - { this->init(&_M_filebuf); } - - /** - * @brief Create an input/output file stream. - * @param s Null terminated string specifying the filename. - * @param mode Open file in specified mode (see std::ios_base). - * - * Tip: When using std::string to hold the filename, you must use - * .c_str() before passing it to this constructor. - */ - explicit - basic_fstream(const char* __s, - ios_base::openmode __mode = ios_base::in | ios_base::out) - : __iostream_type(NULL), _M_filebuf() - { - this->init(&_M_filebuf); - this->open(__s, __mode); - } - - /** - * @brief The destructor does nothing. - * - * The file is closed by the filebuf object, not the formatting - * stream. - */ - ~basic_fstream() - { } - - // Members: - /** - * @brief Accessing the underlying buffer. - * @return The current basic_filebuf buffer. - * - * This hides both signatures of std::basic_ios::rdbuf(). - */ - __filebuf_type* - rdbuf() const - { return const_cast<__filebuf_type*>(&_M_filebuf); } - - /** - * @brief Wrapper to test for an open file. - * @return @c rdbuf()->is_open() - */ - bool - is_open() - { return _M_filebuf.is_open(); } - - // _GLIBCXX_RESOLVE_LIB_DEFECTS - // 365. Lack of const-qualification in clause 27 - bool - is_open() const - { return _M_filebuf.is_open(); } - - /** - * @brief Opens an external file. - * @param s The name of the file. - * @param mode The open mode flags. - * - * Calls @c std::basic_filebuf::open(s,mode). If that - * function fails, @c failbit is set in the stream's error state. - * - * Tip: When using std::string to hold the filename, you must use - * .c_str() before passing it to this constructor. - */ - void - open(const char* __s, - ios_base::openmode __mode = ios_base::in | ios_base::out) - { - if (!_M_filebuf.open(__s, __mode)) - this->setstate(ios_base::failbit); - else - // _GLIBCXX_RESOLVE_LIB_DEFECTS - // 409. Closing an fstream should clear error state - this->clear(); - } - - /** - * @brief Close the file. - * - * Calls @c std::basic_filebuf::close(). If that function - * fails, @c failbit is set in the stream's error state. - */ - void - close() - { - if (!_M_filebuf.close()) - this->setstate(ios_base::failbit); - } - }; - -_GLIBCXX_END_NAMESPACE - -#ifndef _GLIBCXX_EXPORT_TEMPLATE -# include <bits/fstream.tcc> -#endif - -#endif /* _GLIBCXX_FSTREAM */ |

