c++缓冲区std::wstringbuf

参考：http://www.cplusplus.com/reference/sstream/wstringbuf/

class

<sstream>

std::wstringbuf

typedef basic_stringbuf<wchar_t> wstringbuf;

String stream buffer (wide)

• wstreambuf
• wstringbuf

Stream buffer to read from and write towstringobjects.
Objects of this class maintain internally a sequence of wide characters that they use as their associated input sequence and/or associated output sequence. The internal sequence can be initialized from awstring object, or copied to one, using memberstr.
Access to the internal sequence of characters is given to streams by means of the interface offered by the virtual members inherited fromwstreambuf that are overriden in this class:

Member types

member type	definition
char_type	wchar_t
traits_type	char_traits<wchar_t>
allocator_type	allocator<wchar_t>
int_type	wint_t
pos_type	wstreampos
off_type	streamoff

Public member functions

Note: The references to the members of its basic template (basic_stringbuf) are linked here.

(constructor)

Construct object (public member function )

str

Get/set content (public member function )

Public member functions inherited fromwstreambuf

Locales:

pubimbue

Imbue locale (public member function )

getloc

Get current locale (public member function )

Buffer management and positioning:

pubsetbuf

Set buffer array (public member function )

pubseekoff

Set internal position pointer to relative position (public member function )

pubseekpos

Set internal position pointer to absolute position (public member function )

pubsync

Synchronize stream buffer (public member function )

Input functions (get):

in_avail

Get number of character available to read (public member function )

snextc

Advance to next position and get character (public member function )

sbumpc

Get current character and advance to next position (public member function )

sgetc

Get current character (public member function )

sgetn

Get sequence of characters (public member function )

sputbackc

Put character back (public member function )

sungetc

Decrease current position (public member function )

Output functions (put):

sputc

Put character and advance to next position (public member function )

sputn

Put sequence of characters (public member function )

Protected virtual function overrides

Note: The references to the members of its basic template (basic_stringbuf) are linked here.

setbuf

Set buffer (protected virtual member function )

seekoff

Set position pointer to relative position (protected virtual member function )

seekpos

Set position pointer to absolute position (protected virtual member function )

underflow

Get character (protected virtual member function )

pbackfail

Put character back (protected virtual member function )

overflow

Put character (protected virtual member function )

The class also inherits other protected members that are non-virtual or not overridden. See base classwstreambuf for more details.