Espaços nominais
Variantes
Acções

std::codecvt_utf8_utf16

Da cppreference.com
< cpp‎ | locale

 
 
Biblioteca localizações
Localidades e facetas
Original:
Locales and facets
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
locale
Classificação de caracteres
Original:
Character classification
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
Conversões
Original:
Conversions
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
Facet classes base da categoria
Original:
Facet category base classes
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
Categorias faceta
Original:
Facet categories
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
Específicos da localidade facetas
Original:
Locale-specific facets
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
Facetas de conversão de código
Original:
Code conversion facets
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
codecvt_utf8(C++11)
codecvt_utf16(C++11)
codecvt_utf8_utf16(C++11)
codecvt_mode(C++11)
C localidade
Original:
C locale
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
 
Defined in header <codecvt>
template< class Elem,

          unsigned long Maxcode = 0x10ffff,
          std::codecvt_mode Mode = (std::codecvt_mode)0 >

class codecvt_utf8_utf16 : public std::codecvt<Elem, char, std::mbstate_t>;
std::codecvt_utf8_utf16 é uma faceta std::codecvt que encapsula a conversão entre uma string UTF-8 byte codificado e UTF-16 cadeia de caracteres codificados Se Elem é um 32... - Tipo de bit, um codepoint UTF-16 será armazenada em cada caractere de 32 bits da sequência de saída. codecvt Esta faceta pode ser usado para ler e escrever UTF-8 imagens, texto e binário.
Original:
std::codecvt_utf8_utf16 is a std::codecvt facet which encapsulates conversion between a UTF-8 encoded byte string and UTF-16 encoded character string. If Elem is a 32-bit type, one UTF-16 codepoint will be stored in each 32-bit character of the output sequence. This codecvt facet can be used to read and write UTF-8 files, both text and binary.
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

Índice

[editar] Parâmetros do modelo

Elem -
ou char16_t, char32_t, wchar_t ou
Original:
either char16_t, char32_t, or wchar_t
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
Maxcode -
o maior valor de Elem que esta faceta irá ler ou escrever sem erro
Original:
the largest value of Elem that this facet will read or write without error
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
Mode -
uma constante de std::codecvt_mode tipo
Original:
a constant of type std::codecvt_mode
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

Inherited from std::codecvt

Member types

Tipo de membro
Original:
Member type
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
Definition
intern_type internT
extern_type externT
state_type stateT

Member objects

Nome do membro
Original:
Member name
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
Type
id (estática) std::locale::id

Member functions

Invoca do_out
Original:
invokes do_out
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

(of std::codecvt função pública membro) [edit]
Invoca do_in
Original:
invokes do_in
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

(of std::codecvt função pública membro) [edit]
Invoca do_unshift
Original:
invokes do_unshift
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

(of std::codecvt função pública membro) [edit]
Invoca do_encoding
Original:
invokes do_encoding
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

(of std::codecvt função pública membro) [edit]
Invoca do_always_noconv
Original:
invokes do_always_noconv
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

(of std::codecvt função pública membro) [edit]
Invoca do_length
Original:
invokes do_length
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

(of std::codecvt função pública membro) [edit]
Invoca do_max_length
Original:
invokes do_max_length
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

(of std::codecvt função pública membro) [edit]

Protected member functions

[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
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

(virtual protegido of std::codecvt função de membro) [edit]
[virtual]
Converte uma cadeia de externT a Internt, como quando lendo de um arquivo
Original:
converts a string from externT to internT, such as when reading from file
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

(virtual protegido of std::codecvt função de membro) [edit]
[virtual]
gera a seqüência de caracteres de terminação de caracteres externT para conversão incompleta
Original:
generates the termination character sequence of externT characters for incomplete conversion
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

(virtual protegido of std::codecvt função de membro) [edit]
[virtual]
retorna o número de caracteres externT necessários para produzir um caráter internt, se constante
Original:
returns the number of externT characters necessary to produce one internT character, if constant
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

(virtual protegido of std::codecvt função de membro) [edit]
Testes se a faceta codifica uma conversão de identidade para todos os valores de argumentos válidos
Original:
tests if the facet encodes an identity conversion for all valid argument values
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

(virtual protegido of std::codecvt função de membro) [edit]
[virtual]
calcula o comprimento da corda externT que seria consumida por conversão em tampão internt dado
Original:
calculates the length of the externT string that would be consumed by conversion into given internT buffer
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

(virtual protegido of std::codecvt função de membro) [edit]
devolve o número máximo de caracteres externT que poderia ser convertido em um único caractere internt
Original:
returns the maximum number of externT characters that could be converted into a single internT character
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

(virtual protegido of std::codecvt função de membro) [edit]


Inherited from std::codecvt_base

Tipo de membro
Original:
Member type
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
Definition
enum result { ok, partial, error, noconv };
Tipo de enumeração sem escopo
Original:
Unscoped enumeration type
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
Enumeração constante
Original:
Enumeration constant
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
Definition
ok
conversão foi completado sem qualquer erro
Original:
conversion was completed with no error
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
partial
nem todos os caracteres de fonte foram convertidos
Original:
not all source characters were converted
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
error
encontrou um caractere inválido
Original:
encountered an invalid character
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
noconv
necessária nenhuma conversão de entrada, e os tipos de saída são os mesmos
Original:
no conversion required, input and output types are the same
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

[editar] Exemplo

O exemplo a seguir demonstra a leitura de um UTF -8 arquivo em uma string UTF-16 em um sistema com 32 bits wchar_t
Original:
The following example demonstrates reading a UTF-8 file into a UTF-16 string on a system with 32-bit wchar_t
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

#include <fstream>
#include <iostream>
#include <string>
#include <locale>
#include <codecvt>
int main()
{
    std::ofstream("text.txt") << u8"z\u6c34\U0001d10b";
 
    std::wifstream file1("text.txt");
    file1.imbue(std::locale("en_US.UTF8"));
    std::cout << "Normal read from file (using default UTF-8/UTF-32 codecvt)\n";
    for(wchar_t c; file1 >> c; )
        std::cout << std::hex << std::showbase << c << '\n';
 
    std::wifstream file2("text.txt");
    file2.imbue(std::locale(file2.getloc(), new std::codecvt_utf8_utf16<wchar_t>));
    std::cout << "UTF-16 read from the same file (using codecvt_utf8_utf16)\n";
    for(wchar_t c; file2 >> c; )
        std::cout << std::hex << std::showbase << c << '\n';
}

Output:

Normal read from file (using default UTF-8/UTF-32 codecvt)
0x7a
0x6c34
0x1d10b
UTF-16 read from the same file (using codecvt_utf8_utf16)
0x7a
0x6c34
0xd834
0xdd0b

[editar] Veja também

Character
conversions
narrow multibyte
(char)
UTF-8
(char)
UTF-16
(char16_t)
UTF-16 mbrtoc16 / c16rtomb codecvt<char16_t, char, mbstate_t>
codecvt_utf8_utf16<char16_t>
codecvt_utf8_utf16<char32_t>
codecvt_utf8_utf16<wchar_t>
N/A
UCS2 No codecvt_utf8<char16_t> codecvt_utf16<char16_t>
UTF-32/UCS4
(char32_t)
mbrtoc32 / c32rtomb codecvt<char32_t, char, mbstate_t>
codecvt_utf8<char32_t>
codecvt_utf16<char32_t>
UCS2/UCS4
(wchar_t)
No codecvt_utf8<wchar_t> codecvt_utf16<wchar_t>
wide
(wchar_t)
codecvt<wchar_t, char, mbstate_t>
mbsrtowcs / wcsrtombs
No No
Converte entre codificações de caracteres, incluindo UTF-8, UTF-16, UTF-32
Original:
converts between character encodings, including UTF-8, UTF-16, UTF-32
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

(modelo de classe) [edit]
etiquetas para alterar o comportamento das facetas codecvt padrão
Original:
tags to alter behavior of the standard codecvt facets
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

(classe) [edit]
converte entre UTF-8 e UCS2/UCS4
Original:
converts between UTF-8 and UCS2/UCS4
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

(modelo de classe) [edit]
converte entre UTF-16 e UCS2/UCS4
Original:
converts between UTF-16 and UCS2/UCS4
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

(modelo de classe) [edit]