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std::basic_streambuf

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C++
 
D'entrée / sortie de bibliothèque
I / O manipulateurs
C-style I / O
Tampons
Original:
Buffers
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basic_streambuf
basic_filebuf
basic_stringbuf
strstreambuf (obsolète)
Cours d'eau
Original:
Streams
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Abstractions
Original:
Abstractions
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ios_base
basic_ios
basic_istream
basic_ostream
basic_iostream
Fichier E / O
Original:
File I/O
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basic_ifstream
basic_ofstream
basic_fstream
Chaîne I / O
Original:
String I/O
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basic_istringstream
basic_ostringstream
basic_stringstream
Tableau I / O
Original:
Array I/O
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istrstream (obsolète)
ostrstream (obsolète)
strstream (obsolète)
Types
Original:
Types
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streamoff
streamsize
fpos
Interface catégorie d'erreur
Original:
Error category interface
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iostream_category (C++11)
io_errc (C++11)
 
std::basic_streambuf
Fonctions membres publiques
Original:
Public member functions
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basic_streambuf::~basic_streambuf
Locales
Original:
Locales
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basic_streambuf::pubimbue
basic_streambuf::getloc
Positionnement
Original:
Positioning
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basic_streambuf::pubsetbuf
basic_streambuf::pubseekoff
basic_streambuf::pubseekpos
basic_streambuf::pubsync
Obtenez région
Original:
Get area
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basic_streambuf::in_avail
basic_streambuf::snextc
basic_streambuf::sbumpc
basic_streambuf::sgetc
basic_streambuf::sgetn
Mettez région
Original:
Put area
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basic_streambuf::sputc
basic_streambuf::sputn
Putback
Original:
Putback
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basic_streambuf::sputbackc
basic_streambuf::sungetc
Protégé fonctions membres
Original:
Protected member functions
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basic_streambuf::basic_streambuf
basic_streambuf::operator= (C++11)
basic_streambuf::swap (C++11)
Locales
Original:
Locales
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basic_streambuf::imbue
Positionnement
Original:
Positioning
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basic_streambuf::setbuf
basic_streambuf::seekoff
basic_streambuf::seekpos
basic_streambuf::sync
Obtenez région
Original:
Get area
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basic_streambuf::showmanyc
basic_streambuf::underflow
basic_streambuf::uflow
basic_streambuf::xsgetn
basic_streambuf::eback
basic_streambuf::gptr
basic_streambuf::egptr
basic_streambuf::gbump
basic_streambuf::setg
Mettez région
Original:
Put area
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basic_streambuf::xsputn
basic_streambuf::overflow
basic_streambuf::pbase
basic_streambuf::pptr
basic_streambuf::epptr
basic_streambuf::pbump
basic_streambuf::setp
Putback
Original:
Putback
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basic_streambuf::pbackfail
 
Déclaré dans l'en-tête <streambuf>
template<

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

> class basic_streambuf;
Le basic_streambuf classe contrôle d'entrée et de sortie à une séquence de caractères. Il comprend et permet d'accéder à la séquence de caractères commandé (le tampon) et, éventuellement, la séquence de caractères associée (fichier, I / O flux, socket TCP, etc) .
Original:
The class basic_streambuf controls input and output to a character sequence. It includes and provides access to the controlled character sequence (the buffer) and, optionally, the associated character sequence (file, I/O stream, TCP socket, etc).
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Il prend en charge les contraintes suivantes:
Original:
It supports the following constraints:
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  • la séquence d'entrée contrôlée peut ne pas être lisible .
    Original:
    the controlled input sequence may not be readable.
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  • la séquence de sortie contrôlée peut pas être protégé en écriture .
    Original:
    the controlled output sequence may not be writeable.
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  • la représentation des caractères et l'encodage de la séquence contrôlée peut être différente de celle des représentations de caractères dans la séquence associée (une facette locale std::codecvt peut être nécessaire d'effectuer la conversion)
    Original:
    the character representation and encoding in the controlled sequence may be different from the character representations in the associated sequence (a std::codecvt locale facet may be necessary to perform the conversion)
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  • la séquence contrôlée peut être en mesure d'accéder à la séquence associée directement .
    Original:
    the controlled sequence may be able to access the associated sequence directly.
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  • la séquence contrôlée peuvent imposer des limites arbitraires sur la lecture, l'écriture, la recherche, ou ungetting caractères .
    Original:
    the controlled sequence may impose arbitrary limitations on reading, writing, seeking, or ungetting characters.
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La séquence de caractères commandé (le tampon) est un tableau de CharT qui, en tout temps, représente une sous-séquence, ou une "fenêtre" dans la séquence de caractères associée. Son état est décrit par trois pointeurs:
Original:
The controlled character sequence (the buffer) is an array of CharT which, at all times, represents a subsequence, or a "window" into the associated character sequence. Its state is described by three pointers:
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1)
L pointeur début, toujours au plus bas des points de l'élément de tampon
Original:
The beginning pointer, always points at the lowest element of the buffer
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2)
Le pointeur' autre, les points à l'élément qui est le prochain candidat à lire ou à écrire
Original:
The next pointer, points at the element that is the next candidate for reading or writing
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3)
L pointeur extrémité, une pointe après la fin de la mémoire tampon .
Original:
The end pointer, points one past the end of the buffer.
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Si le pointeur suivant est inférieure à la fin pointeur dans une séquence de sortie, une position d'écriture' est disponible. Le pointeur suivant peut être déréférencé et affecté à .
Original:
If the next pointer is less than the end pointer in an output sequence, a write position is available. The next pointer can be dereferenced and assigned to.
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Si le pointeur suivant est inférieure à la fin pointeur dans une séquence d'entrée, un' lire la position est disponible. Le pointeur suivant peut être déréférencé et lire .
Original:
If the next pointer is less than the end pointer in an input sequence, a read position is available. The next pointer can be dereferenced and read from.
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Si le pointeur suivant est plus grand que le pointeur de début dans une séquence d'entrée, une position putback' est disponible, et que le pointeur suivant peut être décrémenté, déréférencé, et attribué à, afin de placer un caractère de retour dans la séquence d'entrée .
Original:
If the next pointer is greater than the beginning pointer in an input sequence, a putback position is available, and the next pointer may be decremented, dereferenced, and assigned to, in order to put a character back into the input sequence.
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Un objet basic_streambuf peut soutenir une séquence d'entrée (dans ce cas, le tampon décrit au début, à côté, et à la fin des pointeurs est appelé' obtenir zone), une séquence de sortie (' mettre région), ou une entrée / séquence de sortie. Dans ce dernier cas, six pointeurs sont suivies, qui peuvent pointer vers tous les éléments de la matrice de même nature ou de deux ensembles individuels .
Original:
A basic_streambuf object may support an input sequence (in which case the buffer described by the beginning, next, and end pointers is called get area), an output sequence (put area), or an input/output sequence. In latter case, six pointers are tracked, which may all point to elements of the same character array or two individual arrays.
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Mise en œuvre typique de la classe de base std::basic_streambuf ne détient que ces pointeurs CharT* six et une copie de std::locale en tant que membres de données. Les tampons se sont implémentées par les classes dérivées telles que std::basic_filebuf ou std::basic_stringbuf .
Original:
Typical implementation of the std::basic_streambuf base class holds only these six CharT* pointers and a copy of std::locale as data members. The buffers themselves are implemented by the derived classes such as std::basic_filebuf or std::basic_stringbuf.
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This section is incomplete
Reason: Consistent terminology across the pages. Probably input/output sequence, get/put area, etc.
Deux typedefs commodité sont fournis par la bibliothèque standard
Original:
Two convenience typedefs are provided by the standard library
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Defined in header <streambuf>
Type d'
Original:
Type
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 Definition
streambuf basic_streambuf<char>
wstreambuf basic_streambuf<wchar_t>
Les objets de flux d'E / S std::basic_istream, std::basic_ostream et dérivés, sont mis en œuvre exclusivement en termes de std::basic_streambuf .
Original:
The I/O stream objects std::basic_istream, std::basic_ostream, and derived, are implemented entirely in terms of std::basic_streambuf.
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Sommaire

[modifier] Types de membres

Type du membre Définition
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]

[modifier] Fonctions membres

[
virtuel
Original:
virtual
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Détruit l'objet basic_streambuf
Original:
destructs the basic_streambuf object
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(function membre virtuelle publique) [edit]
Locales
Original:
Locales
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Invoque imbue()
Original:
invokes imbue()
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(fonction membre publique) [edit]
obtient une copie de l'environnement local associé
Original:
obtains a copy of the associated locale
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(fonction membre publique) [edit]
Positionnement
Original:
Positioning
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Invoque setbuf()
Original:
invokes setbuf()
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(fonction membre publique) [edit]
Invoque seekoff()
Original:
invokes seekoff()
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(fonction membre publique) [edit]
Invoque seekpos()
Original:
invokes seekpos()
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(fonction membre publique) [edit]
Invoque sync()
Original:
invokes sync()
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(fonction membre publique) [edit]
Obtenez région
Original:
Get area
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obtient le nombre de caractères disponibles immédiatement dans la zone d'obtention
Original:
obtains the number of characters immediately available in the get area
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(fonction membre publique) [edit]
les progrès de la séquence d'entrée, puis lit un caractère sans avancer de nouveau
Original:
advances the input sequence, then reads one character without advancing again
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(fonction membre publique) [edit]
lit un caractère de la séquence d'entrée et avance la séquence
Original:
reads one character from the input sequence and advances the sequence
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(fonction membre publique) [edit]
stossc
(obsolète)
les progrès de la séquence d'entrée, comme si en appelant sbumpc() et en rejetant le résultat
Original:
advances the input sequence as if by calling sbumpc() and discarding the result
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(fonction membre publique) [edit]
lire une séquence de caractères à partir de l'entrée, sans faire avancer la séquence
Original:
reads one character from the input sequence without advancing the sequence
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(fonction membre publique) [edit]
Invoque xsgetn()
Original:
invokes xsgetn()
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(fonction membre publique) [edit]
Mettez région
Original:
Put area
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écrit un caractère vers la zone de mise et avance le pointeur suivant
Original:
writes one character to the put area and advances the next pointer
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(fonction membre publique) [edit]
Invoque xsputn()
Original:
invokes xsputn()
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(fonction membre publique) [edit]
Putback
Original:
Putback
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met un caractère en arrière dans la séquence d'entrée
Original:
puts one character back in the input sequence
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(fonction membre publique) [edit]
déplace le pointeur suivant de l'arrière par une séquence d'entrée
Original:
moves the next pointer in the input sequence back by one
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(fonction membre publique) [edit]

Protégé fonctions membres
Original:
Protected member functions
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construit un objet basic_streambuf
Original:
constructs a basic_streambuf object
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(fonction membre protégée) [edit]
(C++11)
remplace un objet basic_streambuf
Original:
replaces a basic_streambuf object
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(fonction membre protégée) [edit]
(C++11)
swaps de deux objets basic_streambuf
Original:
swaps two basic_streambuf objects
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(fonction membre protégée) [edit]
Locales
Original:
Locales
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[
virtuel
Original:
virtual
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modifie les paramètres régionaux associés
Original:
changes the associated locale
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(fonction membre virtuelle protégée) [edit]
Positionnement
Original:
Positioning
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[
virtuel
Original:
virtual
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remplace le tampon de matrice définie par l'utilisateur, si cela est autorisé
Original:
replaces the buffer with user-defined array, if permitted
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(fonction membre virtuelle protégée) [edit]
[
virtuel
Original:
virtual
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repositionne le pointeur suivant de la séquence d'entrée, la séquence de sortie, ou les deux, en utilisant un adressage relatif
Original:
repositions the next pointer in the input sequence, output sequence, or both, using relative addressing
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(fonction membre virtuelle protégée) [edit]
[
virtuel
Original:
virtual
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repositionne le pointeur suivant de la séquence d'entrée, la séquence de sortie, ou les deux en utilisant l'adressage absolu
Original:
repositions the next pointer in the input sequence, output sequence, or both using absolute addressing
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(fonction membre virtuelle protégée) [edit]
[
virtuel
Original:
virtual
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synchronise les tampons avec la séquence de caractères associée
Original:
synchronizes the buffers with the associated character sequence
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(fonction membre virtuelle protégée) [edit]
Obtenez région
Original:
Get area
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[
virtuel
Original:
virtual
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obtient le nombre de caractères disponibles pour l'entrée dans la séquence d'entrée associée, si elle est connue
Original:
obtains the number of characters available for input in the associated input sequence, if known
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(fonction membre virtuelle protégée) [edit]
[
virtuel
Original:
virtual
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lit les caractères à partir de la séquence d'entrée associée à la zone d'obtention
Original:
reads characters from the associated input sequence to the get area
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(fonction membre virtuelle protégée) [edit]
[
virtuel
Original:
virtual
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lit les caractères à partir de la séquence d'entrée associée à la zone get et avance le pointeur suivant
Original:
reads characters from the associated input sequence to the get area and advances the next pointer
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(fonction membre virtuelle protégée) [edit]
[
virtuel
Original:
virtual
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lit les caractères multiples de la séquence d'entrée
Original:
reads multiple characters from the input sequence
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(fonction membre virtuelle protégée) [edit]
renvoie un pointeur sur le début, le caractère courant et la fin de la zone d'obtention
Original:
returns a pointer to the beginning, current character and the end of the get area
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(fonction membre protégée) [edit]
avancer le pointeur suivant de la séquence d'entrée
Original:
advances the next pointer in the input sequence
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(fonction membre protégée) [edit]
repositionne le début des pointeurs, à côté, et à la fin de la séquence d'entrée
Original:
repositions the beginning, next, and end pointers of the input sequence
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(fonction membre protégée) [edit]
Mettez région
Original:
Put area
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[
virtuel
Original:
virtual
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 writes multiple characters to the output sequence
(fonction membre virtuelle protégée) [edit]
[
virtuel
Original:
virtual
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écrit des caractères de la séquence de sortie associé à partir de la zone de vente
Original:
writes characters to the associated output sequence from the put area
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(fonction membre virtuelle protégée) [edit]
renvoie un pointeur sur le début, le caractère courant et la fin de la zone de mise
Original:
returns a pointer to the beginning, current character and the end of the put area
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(fonction membre protégée) [edit]
avancer le pointeur suivant de la séquence de sortie
Original:
advances the next pointer of the output sequence
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(fonction membre protégée) [edit]
repositionne le début des pointeurs, à côté, et à la fin de la séquence de sortie
Original:
repositions the beginning, next, and end pointers of the output sequence
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(fonction membre protégée) [edit]
Putback
Original:
Putback
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[
virtuel
Original:
virtual
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]
met un caractère en arrière dans la séquence d'entrée, éventuellement de modifier la séquence d'entrée
Original:
puts a character back into the input sequence, possibly modifying the input sequence
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(fonction membre virtuelle protégée) [edit]
Récupérée de « https://fr.cppreference.com/mwiki/index.php?title=cpp/io/basic_streambuf&oldid=48288 »