Inheritance diagram for std::basic_stringbuf< _CharT, _Traits, _Alloc >:
Public Types | |
typedef _CharT | char_type |
typedef _Traits | traits_type |
typedef traits_type::int_type | int_type |
typedef traits_type::pos_type | pos_type |
typedef traits_type::off_type | off_type |
Public Member Functions | |
basic_stringbuf (ios_base::openmode __mode=ios_base::in|ios_base::out) | |
Starts with an empty string buffer. | |
basic_stringbuf (const __string_type &__str, ios_base::openmode __mode=ios_base::in|ios_base::out) | |
Starts with an existing string buffer. | |
__string_type | str () const |
Copying out the string buffer. | |
void | str (const __string_type &__s) |
Setting a new buffer. | |
locale | pubimbue (const locale &__loc) |
Entry point for imbue(). | |
locale | getloc () const |
Locale access. | |
streamsize | in_avail () |
Looking ahead into the stream. | |
int_type | snextc () |
Getting the next character. | |
int_type | sbumpc () |
Getting the next character. | |
int_type | sgetc () |
Getting the next character. | |
streamsize | sgetn (char_type *__s, streamsize __n) |
Entry point for xsgetn. | |
int_type | sputbackc (char_type __c) |
Pushing characters back into the input stream. | |
int_type | sungetc () |
Moving backwards in the input stream. | |
int_type | sputc (char_type __c) |
Entry point for all single-character output functions. | |
streamsize | sputn (const char_type *__s, streamsize __n) |
Entry point for all single-character output functions. | |
void | stossc () |
Tosses a character. | |
__streambuf_type * | pubsetbuf (char_type *__s, streamsize __n) |
Entry points for derived buffer functions. | |
pos_type | pubseekoff (off_type __off, ios_base::seekdir __way, ios_base::openmode __mode=ios_base::in|ios_base::out) |
Entry points for derived buffer functions. | |
pos_type | pubseekpos (pos_type __sp, ios_base::openmode __mode=ios_base::in|ios_base::out) |
Entry points for derived buffer functions. | |
int | pubsync () |
Entry points for derived buffer functions. | |
Protected Member Functions | |
virtual int_type | underflow () |
Fetches more data from the controlled sequence. | |
virtual int_type | pbackfail (int_type __c=traits_type::eof()) |
Tries to back up the input sequence. | |
virtual int_type | overflow (int_type __c=traits_type::eof()) |
Consumes data from the buffer; writes to the controlled sequence. | |
virtual __streambuf_type * | setbuf (char_type *__s, streamsize __n) |
Manipulates the buffer. | |
virtual pos_type | seekoff (off_type __off, ios_base::seekdir __way, ios_base::openmode __mode=ios_base::in|ios_base::out) |
Alters the stream positions. | |
virtual pos_type | seekpos (pos_type __sp, ios_base::openmode __mode=ios_base::in|ios_base::out) |
Alters the stream positions. | |
void | gbump (int __n) |
Moving the read position. | |
void | setg (char_type *__gbeg, char_type *__gnext, char_type *__gend) |
Setting the three read area pointers. | |
void | pbump (int __n) |
Moving the write position. | |
void | setp (char_type *__pbeg, char_type *__pend) |
Setting the three write area pointers. | |
virtual void | imbue (const locale &__loc) |
Changes translations. | |
virtual int | sync () |
Synchronizes the buffer arrays with the controlled sequences. | |
virtual streamsize | showmanyc () |
Investigating the data available. | |
virtual streamsize | xsgetn (char_type *__s, streamsize __n) |
Multiple character extraction. | |
virtual int_type | uflow () |
Fetches more data from the controlled sequence. | |
virtual streamsize | xsputn (const char_type *__s, streamsize __n) |
Multiple character insertion. | |
char_type * | eback () const |
Access to the get area. | |
char_type * | gptr () const |
Access to the get area. | |
char_type * | egptr () const |
Access to the get area. | |
char_type * | pbase () const |
Access to the put area. | |
char_type * | pptr () const |
Access to the put area. | |
char_type * | epptr () const |
Access to the put area. |
This class associates either or both of its input and output sequences with a sequence of characters, which can be initialized from, or made available as, a std::basic_string
. (Paraphrased from [27.7.1]/1.)
For this class, open modes (of type ios_base::openmode
) have in
set if the input sequence can be read, and out
set if the output sequence can be written.
Definition at line 62 of file sstream.
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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_streambuf< _CharT, _Traits >. Definition at line 66 of file sstream. Referenced by std::basic_stringbuf< _CharT, _Traits, _Alloc >::seekoff(), and std::basic_stringbuf< _CharT, _Traits, _Alloc >::seekpos(). |
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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_streambuf< _CharT, _Traits >. Definition at line 72 of file sstream. Referenced by std::basic_stringbuf< _CharT, _Traits, _Alloc >::overflow(), and std::basic_stringbuf< _CharT, _Traits, _Alloc >::pbackfail(). |
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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_streambuf< _CharT, _Traits >. Definition at line 74 of file sstream. Referenced by std::basic_stringbuf< _CharT, _Traits, _Alloc >::seekoff(), and std::basic_stringbuf< _CharT, _Traits, _Alloc >::seekpos(). |
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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_streambuf< _CharT, _Traits >. Definition at line 73 of file sstream. Referenced by std::basic_stringbuf< _CharT, _Traits, _Alloc >::seekoff(), and std::basic_stringbuf< _CharT, _Traits, _Alloc >::seekpos(). |
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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_streambuf< _CharT, _Traits >. |
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Starts with an empty string buffer.
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Starts with an existing string buffer.
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Access to the get area. These functions are only available to other protected functions, including derived classes.
Definition at line 598 of file streambuf. Referenced by std::basic_filebuf< _CharT, _Traits >::imbue(), and std::basic_stringbuf< _CharT, _Traits, _Alloc >::seekpos(). |
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Access to the get area. These functions are only available to other protected functions, including derived classes.
Definition at line 604 of file streambuf. Referenced by std::basic_streambuf< char, char_traits< char > >::in_avail(), std::basic_stringbuf< _CharT, _Traits, _Alloc >::seekoff(), and std::basic_stringbuf< _CharT, _Traits, _Alloc >::seekpos(). |
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Access to the put area. These functions are only available to other protected functions, including derived classes.
Definition at line 653 of file streambuf. Referenced by std::basic_stringbuf< _CharT, _Traits, _Alloc >::seekoff(). |
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Moving the read position.
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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 601 of file streambuf. Referenced by std::basic_filebuf< _CharT, _Traits >::imbue(), std::basic_streambuf< char, char_traits< char > >::in_avail(), std::basic_streambuf< _CharT, _Traits >::sbumpc(), and std::basic_stringbuf< _CharT, _Traits, _Alloc >::seekoff(). |
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Changes translations.
Reimplemented in std::basic_filebuf< _CharT, _Traits >. Definition at line 695 of file streambuf. Referenced by std::basic_streambuf< char, char_traits< char > >::pubimbue(). |
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Looking ahead into the stream.
showmanyc() .
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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 81 of file sstream.tcc. References std::basic_stringbuf< _CharT, _Traits, _Alloc >::int_type, std::max(), std::basic_streambuf< _CharT, _Traits >::sputc(), and std::basic_stringbuf< _CharT, _Traits, _Alloc >::str(). |
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Tries to back up the input sequence.
Reimplemented from std::basic_streambuf< _CharT, _Traits >. Definition at line 47 of file sstream.tcc. References std::basic_stringbuf< _CharT, _Traits, _Alloc >::int_type. |
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Access to the put area. These functions are only available to other protected functions, including derived classes.
Definition at line 647 of file streambuf. Referenced by std::basic_filebuf< _CharT, _Traits >::imbue(), and std::basic_stringbuf< _CharT, _Traits, _Alloc >::seekpos(). |
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Moving the write position.
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Access to the put area. These functions are only available to other protected functions, including derived classes.
Definition at line 650 of file streambuf. Referenced by std::basic_filebuf< _CharT, _Traits >::imbue(), and std::basic_stringbuf< _CharT, _Traits, _Alloc >::seekoff(). |
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Entry point for imbue().
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Entry points for derived buffer functions.
The public versions of |
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Entry points for derived buffer functions.
The public versions of |
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Entry points for derived buffer functions.
The public versions of |
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Entry points for derived buffer functions.
The public versions of |
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Getting the next character.
uflow() .
Definition at line 49 of file streambuf.tcc. References std::basic_streambuf< _CharT, _Traits >::char_type, std::basic_streambuf< _CharT, _Traits >::gptr(), std::basic_streambuf< _CharT, _Traits >::int_type, and std::basic_streambuf< _CharT, _Traits >::uflow(). Referenced by std::operator>>(). |
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Alters the stream positions. Each derived class provides its own appropriate behavior.
Reimplemented from std::basic_streambuf< _CharT, _Traits >. Definition at line 121 of file sstream.tcc. References std::basic_stringbuf< _CharT, _Traits, _Alloc >::char_type, std::basic_streambuf< _CharT, _Traits >::egptr(), std::basic_streambuf< _CharT, _Traits >::epptr(), std::basic_streambuf< _CharT, _Traits >::gptr(), std::basic_stringbuf< _CharT, _Traits, _Alloc >::off_type, std::basic_stringbuf< _CharT, _Traits, _Alloc >::pos_type, and std::basic_streambuf< _CharT, _Traits >::pptr(). |
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Alters the stream positions. Each derived class provides its own appropriate behavior.
Reimplemented from std::basic_streambuf< _CharT, _Traits >. Definition at line 181 of file sstream.tcc. References std::basic_stringbuf< _CharT, _Traits, _Alloc >::char_type, std::basic_streambuf< _CharT, _Traits >::eback(), std::basic_streambuf< _CharT, _Traits >::egptr(), std::basic_stringbuf< _CharT, _Traits, _Alloc >::off_type, std::basic_streambuf< _CharT, _Traits >::pbase(), and std::basic_stringbuf< _CharT, _Traits, _Alloc >::pos_type. |
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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 >. |
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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 488 of file streambuf. Referenced by std::basic_streambuf< char, char_traits< char > >::snextc(). |
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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 in std::basic_filebuf< _CharT, _Traits >. Definition at line 771 of file streambuf. Referenced by std::basic_streambuf< char, char_traits< char > >::in_avail(). |
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Getting the next character.
sbumpc() , and if that function returns traits::eof() , so does this function. Otherwise, sgetc() .
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Pushing characters back into the input stream.
Definition at line 66 of file streambuf.tcc. References std::basic_streambuf< _CharT, _Traits >::int_type, and std::basic_streambuf< _CharT, _Traits >::pbackfail(). Referenced by std::operator>>(). |
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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 104 of file streambuf.tcc. References std::basic_streambuf< _CharT, _Traits >::int_type, and std::basic_streambuf< _CharT, _Traits >::overflow(). Referenced by std::basic_stringbuf< _CharT, _Traits, _Alloc >::overflow(). |
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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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Setting a new buffer.
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Copying out the string buffer.
Definition at line 136 of file sstream. References std::max(). Referenced by std::basic_stringbuf< _CharT, _Traits, _Alloc >::overflow(). |
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Moving backwards in the input stream.
Definition at line 83 of file streambuf.tcc. References std::basic_streambuf< _CharT, _Traits >::int_type, and std::basic_streambuf< _CharT, _Traits >::pbackfail(). |
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Synchronizes the buffer arrays with the controlled sequences.
Reimplemented in std::basic_filebuf< _CharT, _Traits >. Definition at line 749 of file streambuf. Referenced by std::basic_streambuf< char, char_traits< char > >::pubsync(). |
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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 std::basic_filebuf< _CharT, _Traits >. Definition at line 822 of file streambuf. Referenced by std::basic_streambuf< _CharT, _Traits >::sbumpc(), std::basic_streambuf< char, char_traits< char > >::stossc(), and std::basic_streambuf< _CharT, _Traits >::xsgetn(). |
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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 >. |
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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 in std::basic_filebuf< _CharT, _Traits >. Definition at line 121 of file streambuf.tcc. References std::basic_streambuf< _CharT, _Traits >::int_type, std::min(), and std::basic_streambuf< _CharT, _Traits >::uflow(). Referenced by std::basic_streambuf< char, char_traits< char > >::sgetn(). |
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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 in std::basic_filebuf< _CharT, _Traits >. Definition at line 160 of file streambuf.tcc. References std::basic_streambuf< _CharT, _Traits >::int_type, std::min(), std::basic_streambuf< _CharT, _Traits >::off_type, and std::basic_streambuf< _CharT, _Traits >::overflow(). Referenced by std::basic_streambuf< char, char_traits< char > >::sputn(). |