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std::basic_filebuf::overflow

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< cpp‎ | io‎ | basic filebuf

 
 
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
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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_filebuf
Membro funções públicas
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
Protegido funções de 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
Não-membros funções
Original:
Non-member functions
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swap(std::basic_filebuf)(C++11)
 
protected:
virtual int_type overflow ( int_type c = Traits::eof() );
Se comporta como o std::basic_streambuf::overflow classe base, exceto que para escrever os dados da área para colocar a seqüência de caracteres associada (o arquivo), primeiro usa codecvt::out() do local imbuído para converter os caracteres em representação (possivelmente multibyte) externa, armazenada em um buffer temporário (alocados tão grande quanto necessário), em seguida, usa o arquivo I / O para copiar todos os bytes totalmente convertido para o arquivo.
Original:
Behaves like the base class std::basic_streambuf::overflow, except that to write the data from the put area to the associated character sequence (to the file), first uses codecvt::out() of the imbued locale to convert the characters into external (possibly multibyte) representation, stored in a temporary buffer (allocated as large as necessary), then uses file I/O to copy all fully-converted bytes into the file.
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Se a conversão falhar com std::codecvt_base::error, retorna Traits::eof() sem tentar qualquer saída.
Original:
If the conversion fails with std::codecvt_base::error, returns Traits::eof() without attempting any output.
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Se o arquivo associado não está aberto (is_open()==false, retorna Traits::eof() antes de fazer qualquer coisa.
Original:
If the associated file is not open (is_open()==false, returns Traits::eof() before doing anything.
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Índice

[editar] Parâmetros

(Nenhum)
Original:
(none)
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[editar] Valor de retorno

Traits::not_eof(c) para indicar sucesso ou Traits::eof() para indicar falha.
Original:
Traits::not_eof(c) to indicate success or Traits::eof() to indicate failure.
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[editar] Exemplo

[editar] Veja também

[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 of std::basic_streambuf função de membro) [edit]
[virtual]
lê o arquivo associado
Original:
reads from the associated file
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(virtual protegido função de membro) [edit]