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std::basic_stringbuf::basic_stringbuf

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< cpp‎ | io‎ | basic stringbuf

 
 
De entrada / saída da biblioteca
I / O manipuladores
C estilo de I / O
Buffers
Original:
Buffers
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basic_streambuf
basic_filebuf
basic_stringbuf
strstreambuf(obsoleta)
Streams
Original:
Streams
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Abstrações
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
Cordas I / O
Original:
String I/O
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basic_istringstream
basic_ostringstream
basic_stringstream
Matriz de I / O
Original:
Array I/O
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istrstream(obsoleta)
ostrstream(obsoleta)
strstream(obsoleta)
Tipos
Original:
Types
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streamoff
streamsize
fpos
Interface de categoria de erro
Original:
Error category interface
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iostream_category(C++11)
io_errc(C++11)
 
std::basic_stringbuf
Membro funções públicas
Original:
Public member functions
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basic_stringbuf::basic_stringbuf
basic_stringbuf::operator=(C++11)
basic_stringbuf::swap(C++11)
basic_stringbuf::str
Protegido funções de membro
Original:
Protected member functions
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basic_stringbuf::underflow
basic_stringbuf::pbackfail
basic_stringbuf::overflow
basic_stringbuf::setbuf
basic_stringbuf::seekoff
basic_stringbuf::seekpos
Não-membros funções
Original:
Non-member functions
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swap(std::basic_stringbuf)(C++11)
 
explicit basic_stringbuf(std::ios_base::openmode which = std::ios_base::in
                                                       | std::ios_base::out);
(1)
explicit basic_stringbuf (const std::basic_string<CharT, traits, Allocator>& new_str,

                          std::ios_base::openmode which = std::ios_base::in

                                                        | std::ios_base::out);
(2)
basic_stringbuf(const basic_stringbuf& rhs) = delete;
(3)
basic_stringbuf(basic_stringbuf&& rhs);
(4) (a partir do C++ 11)
1)
Constrói um objeto std::basic_stringbuf: inicializa a classe base chamando o construtor padrão de std::basic_streambuf, inicializa a seqüência de caracteres com uma string vazia, e define o modo de which.
Original:
Constructs a std::basic_stringbuf object: initializes the base class by calling the default constructor of std::basic_streambuf, initializes the character sequence with an empty string, and sets the mode to which.
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2) .
Original:
Constructs a std::basic_stringbuf object by performing the same initialization as 1), followed by initializing the associated character sequence as if by calling
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3)
O construtor de cópia é apagado; std::basic_stringbuf não é CopyConstructible
Original:
The copy constructor is deleted; std::basic_stringbuf is not CopyConstructible
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4)
Move-constrói um objeto std::basic_stringbuf movendo todo o estado de outro objeto std::basic_stringbuf rhs, incluindo a cadeia associada, o modo de abertura, o local, e todos os outro estado. Após a mudança, os seis indicadores de std::basic_streambuf em *this são garantidos para ser diferente dos ponteiros correspondentes na rhs moveu-de não ser nulo.
Original:
Move-constructs a std::basic_stringbuf object by moving all state from another std::basic_stringbuf object rhs, including the associated string, the open mode, the locale, and all other state. After the move, the six pointers of std::basic_streambuf in *this are guaranteed to be different from the corresponding pointers in the moved-from rhs unless null.
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Índice

[editar] Parâmetros

new_str -
um basic_string usado para inicializar o buffer
Original:
a basic_string used to initialize the buffer
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rhs -
outro basic_stringbuf
Original:
another basic_stringbuf
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mode -
especifica o modo de fluxo aberto. Ele é o tipo de máscara de bits, as seguintes constantes são definidas:
Constante
Original:
Constant
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Explanation
app
procurar o fim do fluxo antes de cada gravação
Original:
seek to the end of stream before each write
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binary
abrir em modo binário
Original:
open in binary mode
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in
Abrir para leitura
Original:
open for reading
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out
abrir para escrita
Original:
open for writing
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trunc
descartar o conteúdo da corrente durante a abertura
Original:
discard the contents of the stream when opening
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ate
procurar o fim do fluxo imediatamente depois de aberto
Original:
seek to the end of stream immediately after open
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Original:
specifies stream open mode. It is bitmask type, the following constants are defined:
Constante
Original:
Constant
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Explanation
app
procurar o fim do fluxo antes de cada gravação
Original:
seek to the end of stream before each write
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binary
abrir em modo binário
Original:
open in binary mode
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in
Abrir para leitura
Original:
open for reading
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out
abrir para escrita
Original:
open for writing
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trunc
descartar o conteúdo da corrente durante a abertura
Original:
discard the contents of the stream when opening
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ate
procurar o fim do fluxo imediatamente depois de aberto
Original:
seek to the end of stream immediately after open
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[editar] Notas

Normalmente chamado pelo construtor de std::basic_stringstream.
Original:
Typically called by the constructor of std::basic_stringstream.
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O nível de suporte para os modos de abrir outros que std::ios_base::in e std::ios_base::out varia entre execuções. C + 11 especifica explicitamente o suporte para std::ios_base::ate em str() e neste construtor, mas std::ios_base::app, std::ios_base::trunc, e std::ios_base::binary ter efeitos diferentes em diferentes implementações.
Original:
The level of support for the open modes other than std::ios_base::in and std::ios_base::out varies among implementations. C++11 explicitly specifies the support for std::ios_base::ate in str() and in this constructor, but std::ios_base::app, std::ios_base::trunc, and std::ios_base::binary have different effects on different implementations.
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[editar] Exemplo

Demonstra chamando o construtor de basic_stringbuf diretamente .
Original:
Demonstrates calling the constructor of basic_stringbuf directly.
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#include <iostream>
#include <sstream>
int main()
{
    // default constructor (mode = in|out)
    std::stringbuf buf1;
    buf1.sputc('1');
    std::cout << &buf1 << '\n';
 
    // string constructor in at-end mode (C++11)
    std::stringbuf buf2("test", std::ios_base::in
                              | std::ios_base::out
                              | std::ios_base::ate);
    buf2.sputc('1');
    std::cout << &buf2 << '\n';
 
    // append mode test (results differ among compilers)
    std::stringbuf buf3("test", std::ios_base::in
                              | std::ios_base::out
                              | std::ios_base::app);
    buf3.sputc('1');
    buf3.pubseekpos(1);
    buf3.sputc('2');
    std::cout << &buf3 << '\n';
}

Output:

1
test1
est12 (Sun Studio) 2st1 (GCC)

[editar] Veja também

constrói o fluxo de cadeia
Original:
constructs the string stream
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(of std::basic_stringstream função pública membro) [edit]