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. | |
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 &) |
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 >. |
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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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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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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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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 599 of file streambuf. Referenced by 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 605 of file streambuf. Referenced by std::basic_streambuf< CharT, enc_char_traits< CharT > >::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 654 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.
Definition at line 395 of file streambuf. Referenced by std::basic_ios< CharT, Traits >::copyfmt(), and std::basic_filebuf< CharT, Traits >::showmanyc(). |
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Access to the get area. These functions are only available to other protected functions, including derived classes.
Definition at line 602 of file streambuf. Referenced by std::basic_streambuf< CharT, enc_char_traits< CharT > >::in_avail(), std::basic_streambuf< CharT, Traits >::sbumpc(), std::basic_stringbuf< CharT, Traits, Alloc >::seekoff(), and std::basic_stringbuf< CharT, Traits, Alloc >::underflow(). |
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Changes translations.
Reimplemented in std::basic_filebuf< CharT, Traits >, std::basic_filebuf< char_type, traits_type >, and std::basic_filebuf< CharT, enc_char_traits< CharT > >. Definition at line 697 of file streambuf. Referenced by std::basic_streambuf< CharT, enc_char_traits< CharT > >::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::max(), std::basic_string< CharT, Traits, Alloc >::reserve(), 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. |
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Access to the put area. These functions are only available to other protected functions, including derived classes.
Definition at line 648 of file streambuf. Referenced by 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 651 of file streambuf. Referenced by std::basic_stringbuf< CharT, Traits, Alloc >::seekoff(). |
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Entry point for imbue().
Definition at line 378 of file streambuf. Referenced by std::basic_ios< CharT, Traits >::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 >::gptr(), 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_streambuf< CharT, Traits >::egptr(), std::basic_streambuf< CharT, Traits >::epptr(), std::basic_streambuf< CharT, Traits >::gptr(), 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_streambuf< CharT, Traits >::eback(), std::basic_streambuf< CharT, Traits >::egptr(), and std::basic_streambuf< CharT, Traits >::pbase(). |
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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 489 of file streambuf. Referenced by std::basic_streambuf< CharT, enc_char_traits< CharT > >::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 >, std::basic_filebuf< char_type, traits_type >, and std::basic_filebuf< CharT, enc_char_traits< CharT > >. Definition at line 770 of file streambuf. Referenced by std::basic_streambuf< CharT, enc_char_traits< CharT > >::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 >::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 >::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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Setting a new buffer.
Definition at line 159 of file sstream. References std::basic_string< CharT, Traits, Alloc >::assign(). |
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Copying out the string buffer.
Definition at line 134 of file sstream. References std::max(), and std::basic_string< CharT, Traits, Alloc >::size(). 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 >::pbackfail(). |
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Synchronizes the buffer arrays with the controlled sequences.
Reimplemented in std::basic_filebuf< CharT, Traits >, std::basic_filebuf< char_type, traits_type >, and std::basic_filebuf< CharT, enc_char_traits< CharT > >. Definition at line 748 of file streambuf. Referenced by std::basic_streambuf< CharT, enc_char_traits< CharT > >::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 >, std::basic_filebuf< char_type, traits_type >, and std::basic_filebuf< CharT, enc_char_traits< CharT > >. Definition at line 821 of file streambuf. Referenced by std::basic_streambuf< CharT, Traits >::sbumpc(), 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 >. Definition at line 198 of file sstream. References std::basic_streambuf< CharT, Traits >::gptr(). |
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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 >, std::basic_filebuf< char_type, traits_type >, and std::basic_filebuf< CharT, enc_char_traits< CharT > >. Definition at line 121 of file streambuf.tcc. References std::copy(), std::min(), and std::basic_streambuf< CharT, Traits >::uflow(). Referenced by std::basic_streambuf< CharT, enc_char_traits< CharT > >::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 >, std::basic_filebuf< char_type, traits_type >, and std::basic_filebuf< CharT, enc_char_traits< CharT > >. Definition at line 160 of file streambuf.tcc. References std::copy(), std::min(), and std::basic_streambuf< CharT, Traits >::overflow(). Referenced by std::basic_streambuf< CharT, enc_char_traits< CharT > >::sputn(). |