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std::basic_streambuf

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C++
 
De entrada / saída da biblioteca
I / O manipuladores
C estilo de I / O
Buffers
Original:
Buffers
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basic_streambuf
(obsoleta)
Streams
Original:
Streams
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Abstrações
Original:
Abstractions
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File I / O
Original:
File I/O
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Cordas I / O
Original:
String I/O
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Matriz de I / O
Original:
Array I/O
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(obsoleta)
(obsoleta)
(obsoleta)
Tipos
Original:
Types
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Interface de categoria de erro
Original:
Error category interface
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(C++11)
(C++11)
 
std::basic_streambuf
Membro funções públicas
Original:
Public member functions
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basic_streambuf::~basic_streambuf
Localidades
Original:
Locales
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basic_streambuf::pubimbue
basic_streambuf::getloc
Posicionamento
Original:
Positioning
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basic_streambuf::pubsetbuf
basic_streambuf::pubseekoff
basic_streambuf::pubseekpos
basic_streambuf::pubsync
Obter área
Original:
Get area
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basic_streambuf::in_avail
basic_streambuf::snextc
basic_streambuf::sbumpc
basic_streambuf::sgetc
basic_streambuf::sgetn
Coloque área
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
Protegido funções de membro
Original:
Protected member functions
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basic_streambuf::basic_streambuf
basic_streambuf::operator=(C++11)
basic_streambuf::swap(C++11)
Localidades
Original:
Locales
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basic_streambuf::imbue
Posicionamento
Original:
Positioning
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basic_streambuf::setbuf
basic_streambuf::seekoff
basic_streambuf::seekpos
basic_streambuf::sync
Obter área
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
Coloque área
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
 
Definido no cabeçalho <streambuf>
template<

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

> class basic_streambuf;
O basic_streambuf classe controla a entrada e saída de uma seq��ência de caracteres. Ele inclui e fornece acesso à seqüência de caracteres controlada (buffer) e, opcionalmente, a seqüência de caracteres associados (arquivo, I / O córrego, TCP socket, 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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Ele suporta as seguintes restrições:
Original:
It supports the following constraints:
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  • a seqüência de entrada controlado não pode ser lido.
    Original:
    the controlled input sequence may not be readable.
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  • a sequência de saída controlada pode não ser gravável.
    Original:
    the controlled output sequence may not be writeable.
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  • a representação de caracteres de codificação e na sequência controlada pode ser diferente a partir das representações de caracteres na sequência associada (uma faceta std::codecvt localidade pode ser necessária para efectuar a conversão)
    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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  • a seqüência controlada pode ser capaz de acessar a seqüência associada diretamente.
    Original:
    the controlled sequence may be able to access the associated sequence directly.
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  • a seqüência controlada pode impor limitações arbitrárias em leitura, escrita, buscando, ou ungetting personagens.
    Original:
    the controlled sequence may impose arbitrary limitations on reading, writing, seeking, or ungetting characters.
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A sequência de caracteres controlado (o tampão) é uma matriz de CharT que, em todos os momentos, representa uma subsequência, ou uma "janela" para a sequência de caracteres associado. Seu estado é descrito por três indicadores:
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)
O' ponteiro início, sempre aponta para o menor elemento do buffer
Original:
The beginning pointer, always points at the lowest element of the buffer
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2)
O' ponteiro seguinte, aponta para o elemento que é o próximo candidato para leitura ou escrita
Original:
The next pointer, points at the element that is the next candidate for reading or writing
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3)
O' ponteiro fim, aponta um após o fim do buffer.
Original:
The end pointer, points one past the end of the buffer.
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Se o ponteiro próximo é menor do que o ponteiro de fim de uma sequência de saída, uma posição de gravação' está disponível. O ponteiro seguinte pode ser dereferenced e atribuído ao.
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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Se o ponteiro próximo é menor do que o ponteiro de fim de uma sequência de entrada, um ler posição disponível. O ponteiro seguinte pode ser dereferenced e ler.
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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Se o ponteiro seguinte é maior do que o ponteiro a partir de uma sequência de entrada, uma posição putback' está disponível, e o apontador seguinte pode ser diminuído, dereferenciamos, e atribuído, a fim de colocar um caractere de volta para a sequência de entrada.
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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Um objeto basic_streambuf pode suportar uma sequência de entrada (caso em que o tampão descrito no início, em seguida, e no final os ponteiros é chamado obter área), uma sequência de saída (área colocar), ou uma entrada / sequência de saída. Em último caso, seis ponteiros são rastreadas, o que pode apontar para todos os elementos do array mesmo personagem ou duas matrizes individuais.
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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Implementação típica da classe base std::basic_streambuf detém apenas esses ponteiros CharT* seis e uma cópia do std::locale como membros de dados. Os amortecedores em si são implementadas pelas classes derivadas, tais como 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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Esta seção está incompleta
Motivo: Consistent terminology across the pages. Probably input/output sequence, get/put area, etc.
Dois typedefs de conveniência são fornecidos pela biblioteca padrão
Original:
Two convenience typedefs are provided by the standard library
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Defined in header <streambuf>
Tipo
Original:
Type
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 Definition
streambuf basic_streambuf<char>
wstreambuf basic_streambuf<wchar_t>
Os objetos de I / O córrego std::basic_istream, std::basic_ostream, e derivados, são implementados inteiramente em termos 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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Índice

[editar] Tipos de membro

Tipo de membro
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]

[editar] Funções de membro

[virtual]
destrói o objeto basic_streambuf
Original:
destructs the basic_streambuf object
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(função pública virtual membro) [edit]
Localidades
Original:
Locales
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Invoca imbue()
Original:
invokes imbue()
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(função pública membro) [edit]
obtém uma cópia do local associado
Original:
obtains a copy of the associated locale
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(função pública membro) [edit]
Posicionamento
Original:
Positioning
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Invoca setbuf()
Original:
invokes setbuf()
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(função pública membro) [edit]
Invoca seekoff()
Original:
invokes seekoff()
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(função pública membro) [edit]
Invoca seekpos()
Original:
invokes seekpos()
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(função pública membro) [edit]
Invoca sync()
Original:
invokes sync()
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(função pública membro) [edit]
Obter área
Original:
Get area
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obtém o número de caracteres disponíveis imediatamente na área get
Original:
obtains the number of characters immediately available in the get area
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(função pública membro) [edit]
avança a seqüência de entrada, em seguida, lê um caractere sem avançar novamente
Original:
advances the input sequence, then reads one character without advancing again
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(função pública membro) [edit]
lê um caractere da seqüência de entrada e avança a seqüência
Original:
reads one character from the input sequence and advances the sequence
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(função pública membro) [edit]
stossc
(obsoleta)
avança a seqüência de entrada, como se chamando sbumpc() e descartando o resultado
Original:
advances the input sequence as if by calling sbumpc() and discarding the result
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(função pública membro) [edit]
lê um caractere da seqüência de entrada sem avançar na seqüência
Original:
reads one character from the input sequence without advancing the sequence
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(função pública membro) [edit]
Invoca xsgetn()
Original:
invokes xsgetn()
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(função pública membro) [edit]
Coloque área
Original:
Put area
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escreve um personagem para a área de largada e avança o ponteiro seguinte
Original:
writes one character to the put area and advances the next pointer
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(função pública membro) [edit]
Invoca xsputn()
Original:
invokes xsputn()
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(função pública membro) [edit]
Putback
Original:
Putback
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coloca um personagem de volta na seqüência de entrada
Original:
puts one character back in the input sequence
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(função pública membro) [edit]
move o ponteiro próximo da sequência de entrada volta a um
Original:
moves the next pointer in the input sequence back by one
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(função pública membro) [edit]

Protegido funções de membro
Original:
Protected member functions
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constrói um objeto basic_streambuf
Original:
constructs a basic_streambuf object
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(protegido função de membro) [edit]
(C++11)
substitui um objeto basic_streambuf
Original:
replaces a basic_streambuf object
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(protegido função de membro) [edit]
(C++11)
troca dois objetos basic_streambuf
Original:
swaps two basic_streambuf objects
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(protegido função de membro) [edit]
Localidades
Original:
Locales
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[virtual]
altera o local associado
Original:
changes the associated locale
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(virtual protegido função de membro) [edit]
Posicionamento
Original:
Positioning
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[virtual]
substitui o buffer com matriz definida pelo usuário, se for permitido
Original:
replaces the buffer with user-defined array, if permitted
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(virtual protegido função de membro) [edit]
[virtual]
reposiciona ponteiro a seguinte na sequência de entrada, de saída de sequência, ou ambos, usando endereçamento relativo
Original:
repositions the next pointer in the input sequence, output sequence, or both, using relative addressing
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(virtual protegido função de membro) [edit]
[virtual]
reposiciona o ponteiro próximo na seqüência de entrada, a seqüência de saída, ou ambos, usando endereçamento absoluto
Original:
repositions the next pointer in the input sequence, output sequence, or both using absolute addressing
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(virtual protegido função de membro) [edit]
[virtual]
sincroniza os buffers com a seqüência de caracteres associado
Original:
synchronizes the buffers with the associated character sequence
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(virtual protegido função de membro) [edit]
Obter área
Original:
Get area
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[virtual]
obtém o número de caracteres disponíveis para a entrada da sequência de entrada associada, se conhecida
Original:
obtains the number of characters available for input in the associated input sequence, if known
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(virtual protegido função de membro) [edit]
[virtual]
lê caracteres da seqüência de entrada associado para a área get
Original:
reads characters from the associated input sequence to the get area
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(virtual protegido função de membro) [edit]
[virtual]
lê caracteres da seqüência de entrada associado à área de get e avança o ponteiro seguinte
Original:
reads characters from the associated input sequence to the get area and advances the next pointer
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(virtual protegido função de membro) [edit]
[virtual]
lê vários personagens da seqüência de entrada
Original:
reads multiple characters from the input sequence
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(virtual protegido função de membro) [edit]
retorna um ponteiro para o início, o personagem de corrente e o fim da área get
Original:
returns a pointer to the beginning, current character and the end of the get area
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(protegido função de membro) [edit]
avança o ponteiro próximo na seqüência de entrada
Original:
advances the next pointer in the input sequence
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(protegido função de membro) [edit]
reposiciona ponteiros o início, ao lado, e no fim da seqüência de entrada
Original:
repositions the beginning, next, and end pointers of the input sequence
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(protegido função de membro) [edit]
Coloque área
Original:
Put area
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[virtual]
 writes multiple characters to the output sequence
(virtual protegido função de membro) [edit]
[virtual]
escreve caracteres para a seqüência de saída associado da área de venda
Original:
writes characters to the associated output sequence from the put area
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(virtual protegido função de membro) [edit]
retorna um ponteiro para o início, o personagem de corrente e o fim da área de venda
Original:
returns a pointer to the beginning, current character and the end of the put area
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(protegido função de membro) [edit]
avanços ponteiro o próximo da seqüência de saída
Original:
advances the next pointer of the output sequence
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(protegido função de membro) [edit]
reposiciona ponteiros o início, ao lado, e no fim da seqüência de saída
Original:
repositions the beginning, next, and end pointers of the output sequence
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(protegido função de membro) [edit]
Putback
Original:
Putback
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[virtual]
coloca um caractere de volta para a sequência de entrada, possivelmente modificando a sequência de entrada
Original:
puts a character back into the input sequence, possibly modifying the input sequence
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(virtual protegido função de membro) [edit]
Obtida de "https://pt.cppreference.com/mwiki/index.php?title=cpp/io/basic_streambuf&oldid=20694"