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std::codecvt::unshift, std::codecvt::do_unshift

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< cpp‎ | locale‎ | codecvt

 
 
Biblioteca localizações
Localidades e facetas
Original:
Locales and facets
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locale
Classificação de caracteres
Original:
Character classification
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Conversões
Original:
Conversions
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Facet classes base da categoria
Original:
Facet category base classes
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Categorias faceta
Original:
Facet categories
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Específicos da localidade facetas
Original:
Locale-specific facets
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Facetas de conversão de código
Original:
Code conversion facets
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codecvt_utf8(C++11)
codecvt_utf16(C++11)
C localidade
Original:
C locale
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Defined in header <locale>
public:

result unshift( stateT& state,
                externT* to,
                externT* to_end,

                externT*& to_next) const
(1)
protected:

result do_unshift( stateT& state,
                   externT* to,
                   externT* to_end,

                   externT*& to_next) const
(2)
1)
função de membro público, chama a do_unshift função de membro da classe derivada mais.
Original:
public member function, calls the member function do_unshift of the most derived class.
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2)
se a codificação representado por esta faceta codecvt é dependente do estado, e state representa um estado de conversão que não é o estado inicial turno, escreve os caracteres necessários para regressar ao estado inicial turno. Os caracteres são escritos para uma matriz de caracteres cujo primeiro elemento é apontado por to. Não mais do que personagens to_end-to são escritos. O to_next parâmetro é atualizado para apontar um passado o último caractere escrito.
Original:
if the encoding represented by this codecvt facet is state-dependent, and state represents a conversion state that is not the initial shift state, writes the characters necessary to return to the initial shift state. The characters are written to a character array whose first element is pointed to by to. No more than to_end-to characters are written. The parameter to_next is updated to point one past the last character written.
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Índice

[editar] Valor de retorno

Um valor de std::codecvt_base::result tipo, que indica o estado de sucesso da seguinte forma:
Original:
A value of type std::codecvt_base::result, indicating the success status as follows:
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ok
todos os caracteres necessários foram escritos. state agora representa o estado deslocamento inicial
Original:
all necessary characters were written. state now represents initial shift state
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partial
não há espaço suficiente no buffer de saída. to_next == to_end
Original:
not enough space in the output buffer. to_next == to_end
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error
erro não especificado ocorreu
Original:
unspecified error occurred
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noconv
a codificação não é dependente do estado, nenhuma seqüência de terminação necessário
Original:
the encoding is not state-dependent, no termination sequence necessary
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A especialização não-conversão std::codecvt<char, char, std::mbstate_t> sempre retorna std::codecvt_base::noconv
Original:
The non-converting specialization std::codecvt<char, char, std::mbstate_t> always returns std::codecvt_base::noconv
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[editar] Notas

Esta função é chamada por std::basic_filebuf::close() e em outras situações de finalização de um estado-dependente sequência de caracteres multibyte.
Original:
This function is called by std::basic_filebuf::close() and in other situations when finalizing a state-dependent multibyte character sequence.
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[editar] Exemplo

[editar] Veja também

converte um caractere largo em sua representação multibyte, determinado estado
Original:
converts a wide character to its multibyte representation, given state
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(função) [edit]
[virtual]
Converte uma cadeia de internt para externT, como ao escrever para o arquivo
Original:
converts a string from internT to externT, such as when writing to file
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(virtual protegido função de membro) [edit]