libstdc++
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#include <stdio_sync_filebuf.h>
Public Types | |
typedef _CharT | char_type |
typedef traits_type::int_type | int_type |
typedef traits_type::off_type | off_type |
typedef traits_type::pos_type | pos_type |
typedef _Traits | traits_type |
Public Member Functions | |
stdio_sync_filebuf (std::__c_file *__f) | |
stdio_sync_filebuf (stdio_sync_filebuf &&__fb) noexcept | |
std::__c_file * | file () |
locale | getloc () const |
streamsize | in_avail () |
stdio_sync_filebuf & | operator= (stdio_sync_filebuf &&__fb) noexcept |
locale | pubimbue (const locale &__loc) |
int_type | sbumpc () |
int_type | sgetc () |
streamsize | sgetn (char_type *__s, streamsize __n) |
int_type | snextc () |
int_type | sputbackc (char_type __c) |
int_type | sputc (char_type __c) |
streamsize | sputn (const char_type *__s, streamsize __n) |
int_type | sungetc () |
void | swap (stdio_sync_filebuf &__fb) |
basic_streambuf * | pubsetbuf (char_type *__s, streamsize __n) |
pos_type | pubseekoff (off_type __off, ios_base::seekdir __way, ios_base::openmode __mode=ios_base::in|ios_base::out) |
pos_type | pubseekpos (pos_type __sp, ios_base::openmode __mode=ios_base::in|ios_base::out) |
int | pubsync () |
Protected Member Functions | |
void | __safe_gbump (streamsize __n) |
void | __safe_pbump (streamsize __n) |
void | gbump (int __n) |
virtual void | imbue (const locale &__loc) |
virtual int_type | overflow (int_type __c=traits_type::eof()) |
virtual int_type | pbackfail (int_type __c=traits_type::eof()) |
void | pbump (int __n) |
virtual pos_type | seekoff (off_type, ios_base::seekdir, ios_base::openmode=ios_base::in|ios_base::out) |
virtual std::streampos | seekoff (std::streamoff __off, std::ios_base::seekdir __dir, std::ios_base::openmode=std::ios_base::in|std::ios_base::out) |
virtual pos_type | seekpos (pos_type, ios_base::openmode=ios_base::in|ios_base::out) |
virtual std::streampos | seekpos (std::streampos __pos, std::ios_base::openmode __mode=std::ios_base::in|std::ios_base::out) |
virtual basic_streambuf< char_type, _Traits > * | setbuf (char_type *, streamsize) |
void | setg (char_type *__gbeg, char_type *__gnext, char_type *__gend) |
void | setp (char_type *__pbeg, char_type *__pend) |
virtual streamsize | showmanyc () |
void | swap (basic_streambuf &__sb) |
virtual int | sync () |
int_type | syncgetc () |
stdio_sync_filebuf< char >::int_type | syncgetc () |
stdio_sync_filebuf< wchar_t >::int_type | syncgetc () |
int_type | syncputc (int_type __c) |
stdio_sync_filebuf< char >::int_type | syncputc (int_type __c) |
stdio_sync_filebuf< wchar_t >::int_type | syncputc (int_type __c) |
int_type | syncungetc (int_type __c) |
stdio_sync_filebuf< char >::int_type | syncungetc (int_type __c) |
stdio_sync_filebuf< wchar_t >::int_type | syncungetc (int_type __c) |
virtual int_type | uflow () |
virtual int_type | underflow () |
std::streamsize | xsgetn (char *__s, std::streamsize __n) |
virtual std::streamsize | xsgetn (char_type *__s, std::streamsize __n) |
virtual streamsize | xsgetn (char_type *__s, streamsize __n) |
std::streamsize | xsgetn (wchar_t *__s, std::streamsize __n) |
std::streamsize | xsputn (const char *__s, std::streamsize __n) |
virtual std::streamsize | xsputn (const char_type *__s, std::streamsize __n) |
virtual streamsize | xsputn (const char_type *__s, streamsize __n) |
std::streamsize | xsputn (const wchar_t *__s, std::streamsize __n) |
char_type * | eback () const |
char_type * | gptr () const |
char_type * | egptr () const |
char_type * | pbase () const |
char_type * | pptr () const |
char_type * | epptr () const |
Protected Attributes | |
locale | _M_buf_locale |
char_type * | _M_in_beg |
char_type * | _M_in_cur |
char_type * | _M_in_end |
char_type * | _M_out_beg |
char_type * | _M_out_cur |
char_type * | _M_out_end |
Provides a layer of compatibility for C.
This GNU extension provides extensions for working with standard C FILE*'s. It must be instantiated by the user with the type of character used in the file stream, e.g., stdio_filebuf<char>.
Definition at line 56 of file stdio_sync_filebuf.h.
typedef _CharT __gnu_cxx::stdio_sync_filebuf< _CharT, _Traits >::char_type |
Definition at line 60 of file stdio_sync_filebuf.h.
typedef traits_type::int_type __gnu_cxx::stdio_sync_filebuf< _CharT, _Traits >::int_type |
Definition at line 62 of file stdio_sync_filebuf.h.
typedef traits_type::off_type __gnu_cxx::stdio_sync_filebuf< _CharT, _Traits >::off_type |
Definition at line 64 of file stdio_sync_filebuf.h.
typedef traits_type::pos_type __gnu_cxx::stdio_sync_filebuf< _CharT, _Traits >::pos_type |
Definition at line 63 of file stdio_sync_filebuf.h.
typedef _Traits __gnu_cxx::stdio_sync_filebuf< _CharT, _Traits >::traits_type |
Definition at line 61 of file stdio_sync_filebuf.h.
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inlineexplicit |
Definition at line 78 of file stdio_sync_filebuf.h.
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inlinenoexcept |
Definition at line 83 of file stdio_sync_filebuf.h.
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inlineprotectedinherited |
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inlineprotectedinherited |
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inlineprotectedinherited |
Access to the get area.
These functions are only available to other protected functions, including derived classes.
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inlineprotectedinherited |
Access to the get area.
These functions are only available to other protected functions, including derived classes.
Definition at line 493 of file streambuf.
Referenced by std::wbuffer_convert< _Codecvt, _Elem, _Tr >::underflow().
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inlineprotectedinherited |
Access to the put area.
These functions are only available to other protected functions, including derived classes.
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inline |
This function can be used to access the underlying C file pointer. Note that there is no way for the library to track what you do with the file, so be careful.
Definition at line 117 of file stdio_sync_filebuf.h.
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inlineprotectedinherited |
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inlineinherited |
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inlineprotectedinherited |
Access to the get area.
These functions are only available to other protected functions, including derived classes.
Definition at line 490 of file streambuf.
Referenced by std::wbuffer_convert< _Codecvt, _Elem, _Tr >::underflow().
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inlineprotectedvirtualinherited |
Changes translations.
__loc | A new locale. |
Translations done during I/O which depend on the current locale are changed by this call. The standard adds, Between invocations of this function a class derived from streambuf can safely cache results of calls to locale functions and to members of facets so obtained.
Reimplemented in std::basic_filebuf< _CharT, _Traits >, std::basic_filebuf< _CharT, encoding_char_traits< _CharT > >, std::basic_filebuf< _CharT, std::char_traits< _CharT > >, and std::basic_filebuf< char_type, traits_type >.
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inlineinherited |
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inlinenoexcept |
Definition at line 92 of file stdio_sync_filebuf.h.
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inlineprotectedvirtual |
Consumes data from the buffer; writes to the controlled sequence.
__c | An additional character to consume. |
Informally, this function is called when the output buffer is full (or does not exist, as buffering need not actually be done). If a buffer exists, it is consumed, with some effect on the controlled sequence. (Typically, the buffer is written out to the sequence verbatim.) In either case, the character c is also written out, if __c is not eof()
.
For a formal definition 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 170 of file stdio_sync_filebuf.h.
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inlineprotectedvirtual |
Tries to back up the input sequence.
__c | The character to be inserted back into the sequence. |
gptr()
, eback()
, and pptr()
are the same as for underflow()
.Reimplemented from std::basic_streambuf< _CharT, _Traits >.
Definition at line 145 of file stdio_sync_filebuf.h.
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inlineprotectedinherited |
Access to the put area.
These functions are only available to other protected functions, including derived classes.
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inlineprotectedinherited |
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inlineprotectedinherited |
Access to the put area.
These functions are only available to other protected functions, including derived classes.
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inlineinherited |
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inlineinherited |
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inlineinherited |
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inlineinherited |
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inlineinherited |
Calls virtual sync function.
Definition at line 276 of file streambuf.
Referenced by std::wbuffer_convert< _Codecvt, _Elem, _Tr >::sync(), and std::basic_istream< _CharT, _Traits >::sync().
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inlineinherited |
Getting the next character.
If the input read position is available, returns that character and increments the read pointer, otherwise calls and returns uflow()
.
Definition at line 321 of file streambuf.
Referenced by std::basic_istream< char >::getline(), std::istreambuf_iterator< _CharT, _Traits >::operator++(), and std::istreambuf_iterator< _CharT, _Traits >::operator++().
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inlineprotectedvirtualinherited |
Alters the stream positions.
Each derived class provides its own appropriate behavior.
pos_type
that represents an invalid stream position. Reimplemented in std::basic_filebuf< _CharT, _Traits >, std::basic_filebuf< _CharT, encoding_char_traits< _CharT > >, std::basic_filebuf< _CharT, std::char_traits< _CharT > >, std::basic_filebuf< char_type, traits_type >, and std::basic_stringbuf< _CharT, _Traits, _Alloc >.
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inlineprotectedvirtual |
Definition at line 193 of file stdio_sync_filebuf.h.
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inlineprotectedvirtualinherited |
Alters the stream positions.
Each derived class provides its own appropriate behavior.
pos_type
that represents an invalid stream position. Reimplemented in std::basic_filebuf< _CharT, _Traits >, std::basic_filebuf< _CharT, encoding_char_traits< _CharT > >, std::basic_filebuf< _CharT, std::char_traits< _CharT > >, std::basic_filebuf< char_type, traits_type >, and std::basic_stringbuf< _CharT, _Traits, _Alloc >.
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inlineprotectedvirtual |
Definition at line 215 of file stdio_sync_filebuf.h.
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inlineprotectedvirtualinherited |
Manipulates the buffer.
Each derived class provides its own appropriate behavior. See the next-to-last paragraph of https://gcc.gnu.org/onlinedocs/libstdc++/manual/streambufs.html#io.streambuf.buffering for more on this function.
this
. Reimplemented in std::basic_filebuf< _CharT, _Traits >, std::basic_filebuf< _CharT, encoding_char_traits< _CharT > >, std::basic_filebuf< _CharT, std::char_traits< _CharT > >, std::basic_filebuf< char_type, traits_type >, and std::basic_stringbuf< _CharT, _Traits, _Alloc >.
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inlineprotectedinherited |
Setting the three read area pointers.
__gbeg | A pointer. |
__gnext | A pointer. |
__gend | A pointer. |
eback()
, __gnext == gptr()
, and __gend == egptr()
Definition at line 514 of file streambuf.
Referenced by std::wbuffer_convert< _Codecvt, _Elem, _Tr >::wbuffer_convert().
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inlineprotectedinherited |
Setting the three write area pointers.
__pbeg | A pointer. |
__pend | A pointer. |
pbase()
, __pbeg == pptr()
, and __pend == epptr()
Definition at line 560 of file streambuf.
Referenced by std::wbuffer_convert< _Codecvt, _Elem, _Tr >::wbuffer_convert().
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inlineinherited |
Getting the next character.
If the input read position is available, returns that character, otherwise calls and returns underflow()
. Does not move the read position after fetching the character.
Definition at line 343 of file streambuf.
Referenced by std::basic_istream< _CharT, _Traits >::sentry::sentry(), std::basic_istream< _CharT, _Traits >::get(), std::basic_istream< _CharT, _Traits >::get(), std::basic_istream< char >::getline(), std::basic_istream< _CharT, _Traits >::ignore(), std::istreambuf_iterator< _CharT, _Traits >::operator++(), std::istreambuf_iterator< _CharT, _Traits >::operator++(), and std::basic_istream< char >::seekg().
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inlineinherited |
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inlineprotectedvirtualinherited |
Investigating the data available.
If it returns a positive value, then successive calls to 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
eof()
but that they will return immediately. showmanyc
are es-how-many-see, not show-manic. Reimplemented in std::basic_filebuf< _CharT, _Traits >, std::basic_filebuf< _CharT, encoding_char_traits< _CharT > >, std::basic_filebuf< _CharT, std::char_traits< _CharT > >, std::basic_filebuf< char_type, traits_type >, and std::basic_stringbuf< _CharT, _Traits, _Alloc >.
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inlineinherited |
Getting the next character.
Calls sbumpc()
, and if that function returns traits::eof()
, so does this function. Otherwise, sgetc()
.
Definition at line 303 of file streambuf.
Referenced by std::basic_istream< _CharT, _Traits >::sentry::sentry(), std::basic_istream< _CharT, _Traits >::get(), std::basic_istream< char >::getline(), std::basic_istream< char >::putback(), and std::basic_istream< char >::seekg().
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inlineinherited |
Pushing characters back into the input stream.
__c | The character to push back. |
Similar to sungetc(), but __c is pushed onto the stream instead of the previous character. If successful, the next character fetched from the input stream will be __c.
Definition at line 377 of file streambuf.
Referenced by std::basic_istream< _CharT, _Traits >::putback().
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inlineinherited |
Entry point for all single-character output functions.
__c | A character to output. |
One of two public 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 traits::to_int_type(__c)
. If a write position is not available, returns overflow(__c)
.
Definition at line 429 of file streambuf.
Referenced by std::ostreambuf_iterator< _CharT, _Traits >::operator=(), and std::wbuffer_convert< _Codecvt, _Elem, _Tr >::overflow().
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inlineinherited |
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inlineinherited |
Moving backwards in the input stream.
If a putback position is available, this function decrements the input pointer and returns that character. Otherwise, calls and returns pbackfail(). The effect is to unget the last character gotten.
Definition at line 402 of file streambuf.
Referenced by std::basic_istream< _CharT, _Traits >::unget().
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inlineprotectedinherited |
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inline |
Definition at line 101 of file stdio_sync_filebuf.h.
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inlineprotectedvirtual |
Synchronizes the buffer arrays with the controlled sequences.
Each derived class provides its own appropriate behavior, including the definition of failure.
Reimplemented from std::basic_streambuf< _CharT, _Traits >.
Definition at line 189 of file stdio_sync_filebuf.h.
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inlineprotected |
Definition at line 223 of file stdio_sync_filebuf.h.
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inlineprotected |
Definition at line 256 of file stdio_sync_filebuf.h.
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inlineprotected |
Definition at line 233 of file stdio_sync_filebuf.h.
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inlineprotected |
Definition at line 266 of file stdio_sync_filebuf.h.
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inlineprotected |
Definition at line 228 of file stdio_sync_filebuf.h.
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inlineprotected |
Definition at line 261 of file stdio_sync_filebuf.h.
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inlineprotectedvirtual |
Fetches more data from the controlled sequence.
Informally, this function does the same thing as 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 from std::basic_streambuf< _CharT, _Traits >.
Definition at line 137 of file stdio_sync_filebuf.h.
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inlineprotectedvirtual |
Fetches more data from the controlled sequence.
Informally, this function is called when the input buffer is exhausted (or does not exist, as buffering need not actually be done). If a buffer exists, it is refilled. In either case, the next available character is returned, or traits::eof()
to indicate a null pending sequence.
For a formal definition 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 https://gcc.gnu.org/onlinedocs/libstdc++/manual/streambufs.html
Reimplemented from std::basic_streambuf< _CharT, _Traits >.
Definition at line 130 of file stdio_sync_filebuf.h.
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inlineprotected |
Definition at line 238 of file stdio_sync_filebuf.h.
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protectedvirtualinherited |
Multiple character extraction.
__s | A buffer area. |
__n | Maximum number of characters to assign. |
Fills __s[0] through __s[__n-1] with characters from the input sequence, as if by 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 in std::basic_filebuf< _CharT, _Traits >, std::basic_filebuf< _CharT, encoding_char_traits< _CharT > >, std::basic_filebuf< _CharT, std::char_traits< _CharT > >, and std::basic_filebuf< char_type, traits_type >.
Definition at line 45 of file streambuf.tcc.
References std::min().
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inlineprotected |
Definition at line 271 of file stdio_sync_filebuf.h.
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inlineprotected |
Definition at line 250 of file stdio_sync_filebuf.h.
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protectedvirtualinherited |
Multiple character insertion.
__s | A buffer area. |
__n | Maximum number of characters to write. |
Writes __s[0] through __s[__n-1] to the output sequence, as if by 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 in std::basic_filebuf< _CharT, _Traits >, std::basic_filebuf< _CharT, encoding_char_traits< _CharT > >, std::basic_filebuf< _CharT, std::char_traits< _CharT > >, and std::basic_filebuf< char_type, traits_type >.
Definition at line 79 of file streambuf.tcc.
References std::min().
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inlineprotected |
Definition at line 293 of file stdio_sync_filebuf.h.
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protectedinherited |
Current locale setting.
Definition at line 197 of file streambuf.
Referenced by std::basic_filebuf< _CharT, _Traits >::basic_filebuf().
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protectedinherited |
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protectedinherited |
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protectedinherited |
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protectedinherited |
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protectedinherited |
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protectedinherited |