Namespace
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std::basic_filebuf

Da cppreference.com.
< cpp‎ | io

 
 
Ingresso / libreria di output
I / O manipolatori
C-style I / O
Buffer
Original:
Buffers
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basic_streambuf
basic_filebuf
basic_stringbuf
strstreambuf(deprecato)
Streams
Original:
Streams
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Astrazioni
Original:
Abstractions
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ios_base
basic_ios
basic_istream
basic_ostream
basic_iostream
File I / O
Original:
File I/O
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basic_ifstream
basic_ofstream
basic_fstream
String I / O
Original:
String I/O
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basic_istringstream
basic_ostringstream
basic_stringstream
Array I / O
Original:
Array I/O
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istrstream(deprecato)
ostrstream(deprecato)
strstream(deprecato)
Tipi
Original:
Types
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streamoff
streamsize
fpos
Errore categoria interfaccia
Original:
Error category interface
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iostream_category(C++11)
io_errc(C++11)
 
std::basic_filebuf
Funzioni membro pubbliche
Original:
Public member functions
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basic_filebuf::basic_filebuf
basic_filebuf::~basic_filebuf
basic_filebuf::operator=(C++11)
basic_filebuf::swap(C++11)
basic_filebuf::is_open
basic_filebuf::open
basic_filebuf::close
Protetto funzioni membro
Original:
Protected member functions
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basic_filebuf::showmanyc
basic_filebuf::underflow
basic_filebuf::uflow
basic_filebuf::pbackfail
basic_filebuf::overflow
basic_filebuf::setbuf
basic_filebuf::seekoff
basic_filebuf::seekpos
basic_filebuf::sync
basic_filebuf::imbue
Non membri funzioni
Original:
Non-member functions
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swap(std::basic_filebuf)(C++11)
 
Defined in header <fstream>
template<

    class charT,
    class Traits = std::char_traits<CharT>,
    class Allocator = std::allocator<CharT>

> class basic_filebuf : public std::basic_streambuf<CharT, Traits>
std::basic_filebuf è un std::basic_streambuf cui associata sequenza di caratteri è un file. Sia la sequenza di ingresso e la sequenza di uscita sono associati con lo stesso file, ed una posizione di file di articolazione viene mantenuta per entrambe le operazioni.
Original:
std::basic_filebuf is a std::basic_streambuf whose associated character sequence is a file. Both the input sequence and the output sequence are associated with the same file, and a joint file position is maintained for both operations.
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Il underflow funzioni () e troppo pieno () / sync () eseguire l'I / O tra il file e le aree get e put del buffer. Quando CharT non è char, maggior parte delle implementazioni di memorizzare i caratteri multibyte nel file e una sfaccettatura std::codecvt viene utilizzato per eseguire gamma / multibyte conversione dei caratteri.
Original:
The functions underflow() and overflow()/sync() perform the actual I/O between the file and the get and put areas of the buffer. When CharT is not char, most implementations store multibyte characters in the file and a std::codecvt facet is used to perform wide/multibyte character conversion.
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Due specializzazioni per i tipi di caratteri comuni sono anche definiti:
Original:
Two specializations for common character types are also defined:
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Defined in header <streambuf>
Tipo
Original:
Type
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Definition
filebuf basic_filebuf<char>
wfilebuf basic_filebuf<wchar_t>

Indice

[modifica] Membri tipi

Membro tipo
Original:
Member type
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Definition
char_type CharT[edit]
traits_type Traits[edit]
int_type Traits::int_type[edit]
pos_type
Traits::pos_type che è necessario per essere std::fpos<Traits::state_type>
Original:
Traits::pos_type which is required to be std::fpos<Traits::state_type>
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off_type Traits::off_type[edit]

[modifica] Membri funzioni

Funzioni membro pubbliche
Original:
Public member functions
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costruisce un oggetto basic_filebuf
Original:
constructs a basic_filebuf object
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(membro pubblico funzione) [edit]
(C++11)
assegna un oggetto basic_filebuf
Original:
assigns a basic_filebuf object
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(membro pubblico funzione) [edit]
(C++11)
swap due oggetti basic_filebuf
Original:
swaps two basic_filebuf objects
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(membro pubblico funzione) [edit]
[virtuale]
distrugge un oggetto basic_filebuf e chiude il file se è aperto
Original:
destructs a basic_filebuf object and closes the file if it is open
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(pubblico virtuale membro funzione) [edit]
checks if the associated file is open
(membro pubblico funzione) [edit]
apre un file e lo configura come la sequenza di caratteri associata
Original:
opens a file and configures it as the associated character sequence
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(membro pubblico funzione) [edit]
svuota il buffer dell'area mettere e chiude il file associato
Original:
flushes the put area buffer and closes the associated file
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(membro pubblico funzione) [edit]

Protetto funzioni membro
Original:
Protected member functions
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[virtuale]
fornisce facoltativamente il numero di caratteri disponibili per l'input dal file
Original:
optionally provides the number of characters available for input from the file
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(virtuale protetto funzione membro) [edit]
[virtuale]
legge dal file associato
Original:
reads from the associated file
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(virtuale protetto funzione membro) [edit]
[virtuale]
legge dal file associato e acconti il puntatore successivo nella zona get
Original:
reads from the associated file and advances the next pointer in the get area
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(virtuale protetto funzione membro) [edit]
[virtuale]
rimette il carattere della zona get, non interessano il file associato
Original:
puts back the character in the get area, not affecting the associated file
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(virtuale protetto funzione membro) [edit]
[virtuale]
scrive i caratteri nel file associato dalla zona put
Original:
writes characters to the associated file from the put area
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(virtuale protetto funzione membro) [edit]
[virtuale]
fornisce fornito dall'utente buffer o trasforma questo filebuf senza buffer
Original:
provides user-supplied buffer or turns this filebuf unbuffered
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(virtuale protetto funzione membro) [edit]
[virtuale]
riposiziona la posizione del file, usando l'indirizzamento relativo
Original:
repositions the file position, using relative addressing
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(virtuale protetto funzione membro) [edit]
[virtuale]
riposiziona la posizione del file, usando l'indirizzamento assoluto
Original:
repositions the file position, using absolute addressing
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(virtuale protetto funzione membro) [edit]
[virtuale]
scrive i caratteri nel file associato dalla zona put
Original:
writes characters to the associated file from the put area
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(virtuale protetto funzione membro) [edit]
[virtuale]
cambia il linguaggio associato
Original:
changes the associated locale
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(virtuale protetto funzione membro) [edit]

[modifica] Non membri funzioni

specializzata l'algoritmo std::swap
Original:
specializes the std::swap algorithm
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(funzione di modello) [edit]

Inherited from std::basic_streambuf

Member types

Membro tipo
Original:
Member type
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Definition
char_type CharT[edit]
traits_type Traits[edit]
int_type Traits::int_type[edit]
pos_type Traits::pos_type[edit]
off_type Traits::off_type[edit]

Member functions

[virtuale]
distrugge l'oggetto basic_streambuf
Original:
destructs the basic_streambuf object
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(pubblico virtuale membro of std::basic_streambuf funzione) [edit]
Versioni locali
Original:
Locales
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Invoca imbue()
Original:
invokes imbue()
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(membro pubblico of std::basic_streambuf funzione) [edit]
ottiene una copia del locale associato
Original:
obtains a copy of the associated locale
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(membro pubblico of std::basic_streambuf funzione) [edit]
Posizionamento
Original:
Positioning
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Invoca setbuf()
Original:
invokes setbuf()
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(membro pubblico of std::basic_streambuf funzione) [edit]
Invoca seekoff()
Original:
invokes seekoff()
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(membro pubblico of std::basic_streambuf funzione) [edit]
Invoca seekpos()
Original:
invokes seekpos()
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(membro pubblico of std::basic_streambuf funzione) [edit]
Invoca sync()
Original:
invokes sync()
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(membro pubblico of std::basic_streambuf funzione) [edit]
Prendi zona
Original:
Get area
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ottiene il numero di caratteri immediatamente disponibili nella zona get
Original:
obtains the number of characters immediately available in the get area
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(membro pubblico of std::basic_streambuf funzione) [edit]
avanza la sequenza di input, quindi legge un carattere senza avanzare di nuovo
Original:
advances the input sequence, then reads one character without advancing again
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(membro pubblico of std::basic_streambuf funzione) [edit]
legge un carattere dalla sequenza di input e fa avanzare la sequenza
Original:
reads one character from the input sequence and advances the sequence
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(membro pubblico of std::basic_streambuf funzione) [edit]
stossc
(deprecato)
avanza la sequenza di ingresso come se chiamando sbumpc() e scartando il risultato
Original:
advances the input sequence as if by calling sbumpc() and discarding the result
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(membro pubblico funzione) [edit]
legge un carattere dalla sequenza di input senza avanzare la sequenza
Original:
reads one character from the input sequence without advancing the sequence
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(membro pubblico of std::basic_streambuf funzione) [edit]
Invoca xsgetn()
Original:
invokes xsgetn()
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(membro pubblico of std::basic_streambuf funzione) [edit]
Mettere zona
Original:
Put area
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scrive un carattere alla zona mettere e fa avanzare il puntatore successivo
Original:
writes one character to the put area and advances the next pointer
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(membro pubblico of std::basic_streambuf funzione) [edit]
Invoca xsputn()
Original:
invokes xsputn()
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(membro pubblico of std::basic_streambuf funzione) [edit]
Putback
Original:
Putback
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mette un carattere indietro nella sequenza di input
Original:
puts one character back in the input sequence
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(membro pubblico of std::basic_streambuf funzione) [edit]
sposta il puntatore successivo nella sequenza di input retro di uno
Original:
moves the next pointer in the input sequence back by one
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(membro pubblico of std::basic_streambuf funzione) [edit]

Protected member functions

costruisce un oggetto basic_streambuf
Original:
constructs a basic_streambuf object
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(protetto funzione membro) [edit]
(C++11)
sostituisce un oggetto basic_streambuf
Original:
replaces a basic_streambuf object
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(protetto funzione membro) [edit]
(C++11)
swap due oggetti basic_streambuf
Original:
swaps two basic_streambuf objects
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(protetto funzione membro) [edit]
Versioni locali
Original:
Locales
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[virtuale]
cambia il linguaggio associato
Original:
changes the associated locale
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(virtuale protetto funzione of std::basic_streambuf membro) [edit]
Posizionamento
Original:
Positioning
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[virtuale]
sostituisce il buffer definite dall'utente matrice, se consentito
Original:
replaces the buffer with user-defined array, if permitted
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(virtuale protetto funzione of std::basic_streambuf membro) [edit]
[virtuale]
riposiziona il puntatore successivo nella sequenza di input, sequenza di emissione, o entrambi, utilizzando l'indirizzamento relativo
Original:
repositions the next pointer in the input sequence, output sequence, or both, using relative addressing
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(virtuale protetto funzione of std::basic_streambuf membro) [edit]
[virtuale]
riposiziona il puntatore successivo nella sequenza di input, sequenza di emissione, o entrambi utilizzando indirizzamento assoluto
Original:
repositions the next pointer in the input sequence, output sequence, or both using absolute addressing
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(virtuale protetto funzione of std::basic_streambuf membro) [edit]
[virtuale]
sincronizza i buffer con la sequenza di caratteri associata
Original:
synchronizes the buffers with the associated character sequence
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(virtuale protetto funzione of std::basic_streambuf membro) [edit]
Prendi zona
Original:
Get area
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[virtuale]
ottiene il numero di caratteri disponibili per l'ingresso nella sequenza di input associato, se noto
Original:
obtains the number of characters available for input in the associated input sequence, if known
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(virtuale protetto funzione of std::basic_streambuf membro) [edit]
[virtuale]
legge caratteri dalla sequenza di input associato alla zona get
Original:
reads characters from the associated input sequence to the get area
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(virtuale protetto funzione of std::basic_streambuf membro) [edit]
[virtuale]
legge i caratteri della sequenza di input associato alla zona get e fa avanzare il puntatore successivo
Original:
reads characters from the associated input sequence to the get area and advances the next pointer
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(virtuale protetto funzione of std::basic_streambuf membro) [edit]
[virtuale]
legge più caratteri dalla sequenza di input
Original:
reads multiple characters from the input sequence
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(virtuale protetto funzione of std::basic_streambuf membro) [edit]
restituisce un puntatore all'inizio, carattere corrente e la fine dell'area get
Original:
returns a pointer to the beginning, current character and the end of the get area
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(protetto funzione membro) [edit]
fa avanzare il puntatore successivo nella sequenza di input
Original:
advances the next pointer in the input sequence
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(protetto funzione membro) [edit]
riposiziona puntatori l'inizio, poi, e la fine della sequenza di input
Original:
repositions the beginning, next, and end pointers of the input sequence
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(protetto funzione membro) [edit]
Mettere zona
Original:
Put area
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[virtuale]
writes multiple characters to the output sequence
(virtuale protetto funzione of std::basic_streambuf membro) [edit]
[virtuale]
scrive caratteri della sequenza di emissione associato dalla zona put
Original:
writes characters to the associated output sequence from the put area
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(virtuale protetto funzione of std::basic_streambuf membro) [edit]
restituisce un puntatore all'inizio, carattere corrente e la fine dell'area messo
Original:
returns a pointer to the beginning, current character and the end of the put area
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(protetto funzione membro) [edit]
avanza il puntatore successiva della sequenza di emissione
Original:
advances the next pointer of the output sequence
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(protetto funzione membro) [edit]
riposiziona puntatori l'inizio, poi, e la fine della sequenza di emissione
Original:
repositions the beginning, next, and end pointers of the output sequence
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(protetto funzione membro) [edit]
Putback
Original:
Putback
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[virtuale]
mette un carattere indietro nella sequenza di ingresso, eventualmente modificando la sequenza di ingresso
Original:
puts a character back into the input sequence, possibly modifying the input sequence
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(virtuale protetto funzione of std::basic_streambuf membro) [edit]