Inheritance diagram for std::basic_stringbuf< CharT, Traits, Alloc >:
locale | pubimbue (const locale &__loc) |
Entry point for imbue(). | |
locale | getloc () const |
Locale access. | |
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 point for imbue(). | |
pos_type | pubseekpos (pos_type sp, ios_base::openmode __mode=ios_base::in|ios_base::out) |
Entry point for imbue(). | |
int | pubsync () |
Entry point for imbue(). | |
char_type * | M_in_beg |
Entry point for imbue(). | |
char_type * | M_in_cur |
Entry point for imbue(). | |
char_type * | M_in_end |
Entry point for imbue(). | |
char_type * | M_out_beg |
Entry point for imbue(). | |
char_type * | M_out_cur |
Entry point for imbue(). | |
char_type * | M_out_end |
Entry point for imbue(). | |
locale | M_buf_locale |
Entry point for imbue(). | |
Public Types | |
typedef CharT | char_type |
typedef Traits | traits_type |
typedef Alloc | allocator_type |
typedef traits_type::int_type | int_type |
typedef traits_type::pos_type | pos_type |
typedef traits_type::off_type | off_type |
typedef basic_streambuf< char_type, traits_type > | streambuf_type |
typedef basic_string< char_type, Traits, Alloc > | string_type |
typedef string_type::size_type | size_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. | |
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. | |
Protected Member Functions | |
void | M_stringbuf_init (ios_base::openmode __mode) |
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) |
virtual pos_type | seekpos (pos_type sp, ios_base::openmode __mode=ios_base::in|ios_base::out) |
void | M_sync (char_type *__base, size_type __i, size_type __o) |
void | M_update_egptr () |
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 pos_type | seekoff (off_type, ios_base::seekdir, ios_base::openmode=ios_base::in|ios_base::out) |
Alters the stream positions. | |
virtual pos_type | seekpos (pos_type, ios_base::openmode=ios_base::in|ios_base::out) |
Alters the stream positions. | |
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. | |
Protected Attributes | |
ios_base::openmode | M_mode |
string_type | M_string |
Friends | |
class | basic_ios< char_type, traits_type > |
class | basic_istream< char_type, traits_type > |
class | basic_ostream< char_type, traits_type > |
class | istreambuf_iterator< char_type, traits_type > |
class | ostreambuf_iterator< char_type, traits_type > |
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 63 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 452 of file streambuf. Referenced by std::basic_filebuf< CharT, Traits >::imbue(), std::basic_filebuf< CharT, enc_char_traits< CharT > >::M_destroy_pback(), 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_streambuf< CharT, enc_char_traits< CharT > >::sputbackc(), std::basic_filebuf< CharT, Traits >::underflow(), and std::basic_filebuf< CharT, Traits >::xsgetn(). |
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Access to the put area. These functions are only available to other protected functions, including derived classes.
Definition at line 505 of file streambuf. Referenced by std::basic_stringbuf< CharT, Traits, Alloc >::overflow(), std::basic_streambuf< CharT, enc_char_traits< CharT > >::sputc(), std::basic_streambuf< CharT, Traits >::xsputn(), and std::basic_filebuf< CharT, Traits >::xsputn(). |
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Moving the read position.
Definition at line 468 of file streambuf. Referenced by std::copy_streambufs(), std::basic_stringbuf< CharT, Traits, Alloc >::pbackfail(), std::basic_streambuf< CharT, enc_char_traits< CharT > >::sbumpc(), std::basic_stringbuf< CharT, Traits, Alloc >::seekpos(), std::basic_streambuf< CharT, enc_char_traits< CharT > >::sputbackc(), std::basic_streambuf< CharT, enc_char_traits< CharT > >::sungetc(), std::basic_streambuf< CharT, enc_char_traits< CharT > >::uflow(), std::basic_streambuf< CharT, Traits >::xsgetn(), 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 455 of file streambuf. Referenced by std::copy_streambufs(), std::basic_streambuf< CharT, enc_char_traits< CharT > >::in_avail(), std::basic_filebuf< CharT, enc_char_traits< CharT > >::M_create_pback(), std::basic_filebuf< CharT, enc_char_traits< CharT > >::M_destroy_pback(), std::basic_stringbuf< CharT, Traits, Alloc >::pbackfail(), std::basic_filebuf< CharT, Traits >::pbackfail(), std::basic_stringbuf< CharT, Traits, Alloc >::seekoff(), std::basic_filebuf< CharT, Traits >::showmanyc(), std::basic_streambuf< CharT, enc_char_traits< CharT > >::sputbackc(), std::basic_streambuf< CharT, enc_char_traits< CharT > >::sungetc(), and std::basic_streambuf< CharT, Traits >::xsgetn(). |
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Changes translations.
Reimplemented in std::basic_filebuf< CharT, Traits >, and std::basic_filebuf< CharT, enc_char_traits< CharT > >. Definition at line 546 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 76 of file sstream.tcc. References std::basic_streambuf< CharT, Traits >::eback(), std::basic_streambuf< CharT, Traits >::epptr(), std::max(), std::min(), std::ios_base::out, std::basic_streambuf< CharT, Traits >::pbase(), std::basic_streambuf< CharT, Traits >::pptr(), and std::basic_streambuf< CharT, Traits >::sputc(). |
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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_streambuf< CharT, Traits >::gbump(), and std::basic_streambuf< CharT, Traits >::gptr(). |
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Access to the put area. These functions are only available to other protected functions, including derived classes.
Definition at line 499 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 515 of file streambuf. Referenced by std::basic_filebuf< CharT, Traits >::overflow(), std::basic_stringbuf< CharT, Traits, Alloc >::seekpos(), std::basic_streambuf< CharT, enc_char_traits< CharT > >::sputc(), and std::basic_streambuf< CharT, Traits >::xsputn(). |
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Access to the put area. These functions are only available to other protected functions, including derived classes.
Definition at line 502 of file streambuf. Referenced by std::basic_filebuf< CharT, Traits >::M_convert_to_external(), std::basic_filebuf< CharT, Traits >::M_terminate_output(), std::basic_stringbuf< CharT, Traits, Alloc >::overflow(), std::basic_filebuf< CharT, Traits >::overflow(), std::basic_stringbuf< CharT, Traits, Alloc >::seekoff(), std::basic_streambuf< CharT, enc_char_traits< CharT > >::sputc(), std::basic_stringbuf< CharT, Traits, Alloc >::str(), std::basic_filebuf< CharT, Traits >::sync(), std::basic_streambuf< CharT, Traits >::xsputn(), and std::basic_filebuf< CharT, Traits >::xsputn(). |
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Entry point for imbue().
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Entry point for imbue().
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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 point for imbue().
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Getting the next character.
uflow() .
Definition at line 287 of file streambuf. Referenced by std::operator>>(). |
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Alters the stream positions. Each derived class provides its own appropriate behavior.
Definition at line 572 of file streambuf. Referenced by std::basic_streambuf< CharT, enc_char_traits< CharT > >::pubseekoff(). |
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Alters the stream positions. Each derived class provides its own appropriate behavior.
Definition at line 584 of file streambuf. Referenced by std::basic_streambuf< CharT, enc_char_traits< CharT > >::pubseekpos(). |
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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.
Definition at line 479 of file streambuf. Referenced by std::basic_filebuf< CharT, enc_char_traits< CharT > >::M_create_pback(), std::basic_filebuf< CharT, enc_char_traits< CharT > >::M_destroy_pback(), and std::basic_filebuf< CharT, enc_char_traits< CharT > >::M_set_buffer(). |
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Setting the three write area pointers.
Definition at line 525 of file streambuf. Referenced by std::basic_filebuf< CharT, enc_char_traits< CharT > >::M_set_buffer(). |
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Getting the next character.
underflow() . Does not move the read position after fetching the character.
Definition at line 309 of file streambuf. Referenced by std::copy_streambufs(). |
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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 >, and std::basic_filebuf< CharT, enc_char_traits< CharT > >. Definition at line 619 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() .
Definition at line 269 of file streambuf. Referenced by std::copy_streambufs(). |
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Pushing characters back into the input stream.
Definition at line 342 of file streambuf. 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 394 of file streambuf. Referenced by std::copy_streambufs(), and 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. Definition at line 420 of file streambuf. Referenced by std::copy_streambufs(). |
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Setting a new buffer.
Definition at line 163 of file sstream. References std::basic_string< CharT, Traits, Alloc >::assign(). |
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Copying out the string buffer.
Definition at line 141 of file sstream. References std::basic_streambuf< CharT, Traits >::egptr(), and std::basic_streambuf< CharT, Traits >::pptr(). |
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Moving backwards in the input stream.
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Synchronizes the buffer arrays with the controlled sequences.
Reimplemented in __gnu_cxx::stdio_sync_filebuf< CharT, Traits >, std::basic_filebuf< CharT, Traits >, and std::basic_filebuf< CharT, enc_char_traits< CharT > >. Definition at line 597 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 __gnu_cxx::stdio_sync_filebuf< CharT, Traits >. Definition at line 670 of file streambuf. Referenced by std::basic_streambuf< CharT, enc_char_traits< CharT > >::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 118 of file sstream.tcc. References std::basic_streambuf< CharT, Traits >::egptr(), and std::ios_base::in. |
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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 __gnu_cxx::stdio_sync_filebuf< CharT, Traits >, std::basic_filebuf< CharT, Traits >, and std::basic_filebuf< CharT, enc_char_traits< CharT > >. Definition at line 45 of file streambuf.tcc. References std::copy(), std::basic_streambuf< CharT, Traits >::egptr(), std::basic_streambuf< CharT, Traits >::gbump(), std::basic_streambuf< CharT, Traits >::gptr(), 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 __gnu_cxx::stdio_sync_filebuf< CharT, Traits >, std::basic_filebuf< CharT, Traits >, and std::basic_filebuf< CharT, enc_char_traits< CharT > >. Definition at line 79 of file streambuf.tcc. References std::copy(), std::basic_streambuf< CharT, Traits >::epptr(), std::min(), std::basic_streambuf< CharT, Traits >::overflow(), std::basic_streambuf< CharT, Traits >::pbump(), and std::basic_streambuf< CharT, Traits >::pptr(). Referenced by std::basic_streambuf< CharT, enc_char_traits< CharT > >::sputn(). |
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Entry point for imbue().
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Entry point for imbue().
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Entry point for imbue().
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Entry point for imbue().
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Entry point for imbue().
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Entry point for imbue().
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Entry point for imbue().
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