33 #ifndef _GLIBXX_STREAMBUF
34 #define _GLIBXX_STREAMBUF 1
36 #pragma GCC system_header
45 namespace std _GLIBCXX_VISIBILITY(default)
47 _GLIBCXX_BEGIN_NAMESPACE_VERSION
49 template<
typename _CharT,
typename _Traits>
51 __copy_streambufs_eof(basic_streambuf<_CharT, _Traits>*,
52 basic_streambuf<_CharT, _Traits>*,
bool&);
119 template<
typename _CharT,
typename _Traits>
120 class basic_streambuf
150 template<
bool _IsMove,
typename _CharT2>
151 friend typename __gnu_cxx::__enable_if<__is_char<_CharT2>::__value,
156 template<
typename _CharT2>
157 friend typename __gnu_cxx::__enable_if<__is_char<_CharT2>::__value,
162 template<
typename _CharT2,
typename _Traits2>
166 template<
typename _CharT2,
typename _Traits2,
typename _Alloc>
171 template<
typename _CharT2,
typename _Traits2,
typename _Alloc>
240 {
return this->
setbuf(__s, __n); }
253 {
return this->
seekoff(__off, __way, __mode); }
265 {
return this->
seekpos(__sp, __mode); }
287 return __ret ? __ret : this->
showmanyc();
300 int_type __ret = traits_type::eof();
301 if (__builtin_expect(!traits_type::eq_int_type(this->
sbumpc(),
303 __ret = this->
sgetc();
319 if (__builtin_expect(this->
gptr() < this->
egptr(),
true))
321 __ret = traits_type::to_int_type(*this->
gptr());
325 __ret = this->
uflow();
341 if (__builtin_expect(this->
gptr() < this->
egptr(),
true))
342 __ret = traits_type::to_int_type(*this->
gptr());
358 {
return this->
xsgetn(__s, __n); }
375 const bool __testpos = this->
eback() < this->
gptr();
376 if (__builtin_expect(!__testpos ||
377 !traits_type::eq(__c, this->
gptr()[-1]),
false))
378 __ret = this->
pbackfail(traits_type::to_int_type(__c));
382 __ret = traits_type::to_int_type(*this->
gptr());
400 if (__builtin_expect(this->
eback() < this->
gptr(),
true))
403 __ret = traits_type::to_int_type(*this->
gptr());
427 if (__builtin_expect(this->
pptr() < this->
epptr(),
true))
431 __ret = traits_type::to_int_type(__c);
434 __ret = this->
overflow(traits_type::to_int_type(__c));
451 {
return this->
xsputn(__s, __n); }
688 {
return traits_type::eof(); }
702 int_type __ret = traits_type::eof();
703 const bool __testeof = traits_type::eq_int_type(this->
underflow(),
707 __ret = traits_type::to_int_type(*this->
gptr());
725 {
return traits_type::eof(); }
769 {
return traits_type::eof(); }
771 #if _GLIBCXX_USE_DEPRECATED
816 __copy_streambufs_eof(basic_streambuf<char>* __sbin,
817 basic_streambuf<char>* __sbout,
bool& __ineof);
818 #ifdef _GLIBCXX_USE_WCHAR_T
821 __copy_streambufs_eof(basic_streambuf<wchar_t>* __sbin,
822 basic_streambuf<wchar_t>* __sbout,
bool& __ineof);
825 _GLIBCXX_END_NAMESPACE_VERSION
basic_streambuf()
Base constructor.
traits_type::off_type off_type
int_type sbumpc()
Getting the next character.
char_type * _M_in_cur
Current read area.
virtual void imbue(const locale &__loc)
Changes translations.
char_type * _M_out_beg
Start of put area.
virtual int_type overflow(int_type __c=traits_type::eof())
Consumes data from the buffer; writes to the controlled sequence.
static const openmode in
Open for input. Default for ifstream and fstream.
virtual streamsize showmanyc()
Investigating the data available.
static const openmode out
Open for output. Default for ofstream and fstream.
char_type * eback() const
Access to the get area.
pos_type pubseekpos(pos_type __sp, ios_base::openmode __mode=ios_base::in|ios_base::out)
Alters the stream position.
basic_streambuf * pubsetbuf(char_type *__s, streamsize __n)
Entry points for derived buffer functions.
int_type snextc()
Getting the next character.
streamsize sgetn(char_type *__s, streamsize __n)
Entry point for xsgetn.
char_type * epptr() const
Access to the put area.
virtual pos_type seekpos(pos_type, ios_base::openmode=ios_base::in|ios_base::out)
Alters the stream positions.
int_type sgetc()
Getting the next character.
streamsize sputn(const char_type *__s, streamsize __n)
Entry point for all single-character output functions.
streamsize in_avail()
Looking ahead into the stream.
21.1.3.1 char_traits specializations
pos_type pubseekoff(off_type __off, ios_base::seekdir __way, ios_base::openmode __mode=ios_base::in|ios_base::out)
Alters the stream position.
virtual streamsize xsputn(const char_type *__s, streamsize __n)
Multiple character insertion.
void setg(char_type *__gbeg, char_type *__gnext, char_type *__gend)
Setting the three read area pointers.
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 streamsize xsgetn(char_type *__s, streamsize __n)
Multiple character extraction.
int_type sputc(char_type __c)
Entry point for all single-character output functions.
int_type sungetc()
Moving backwards in the input stream.
Provides input iterator semantics for streambufs.
int_type sputbackc(char_type __c)
Pushing characters back into the input stream.
virtual int sync()
Synchronizes the buffer arrays with the controlled sequences.
basic_istream< _CharT, _Traits > & getline(basic_istream< _CharT, _Traits > &__is, basic_string< _CharT, _Traits, _Alloc > &__str, _CharT __delim)
Read a line from stream into a string.
void pbump(int __n)
Moving the write position.
virtual ~basic_streambuf()
Destructor deallocates no buffer space.
char_type * gptr() const
Access to the get area.
Template class basic_ios, virtual base class for all stream classes.
Provides output iterator semantics for streambufs.
char_type * _M_out_end
End of put area.
Managing sequences of characters and character-like objects.
virtual pos_type seekoff(off_type, ios_base::seekdir, ios_base::openmode=ios_base::in|ios_base::out)
Alters the stream positions.
virtual int_type uflow()
Fetches more data from the controlled sequence.
Template class basic_ostream.
ptrdiff_t streamsize
Integral type for I/O operation counts and buffer sizes.
char_type * _M_out_cur
Current put area.
char_type * egptr() const
Access to the get area.
locale _M_buf_locale
Current locale setting.
virtual basic_streambuf< char_type, _Traits > * setbuf(char_type *, streamsize)
Manipulates the buffer.
bitset< _Nb > operator>>(size_t __position) const noexcept
Self-explanatory.
traits_type::int_type int_type
char_type * _M_in_end
End of get area.
char_type * pptr() const
Access to the put area.
traits_type::pos_type pos_type
locale pubimbue(const locale &__loc)
Entry point for imbue().
int pubsync()
Calls virtual sync function.
void gbump(int __n)
Moving the read position.
char_type * pbase() const
Access to the put area.
locale getloc() const
Locale access.
basic_streambuf< char_type, traits_type > __streambuf_type
This is a non-standard type.
The actual work of input and output (interface).
Template class basic_istream.
Container class for localization functionality.The locale class is first a class wrapper for C librar...
char_type * _M_in_beg
Start of get area.
Class representing stream positions.
void setp(char_type *__pbeg, char_type *__pend)
Setting the three write area pointers.