std::codecvt_byname
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Definido en el archivo de encabezado <locale>
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template< class internT, class externT, class stateT > class codecvt_byname : public std::codecvt<internT, externT, stateT>; |
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std::codecvt_byname es una faceta std::codecvt que encapsula las reglas de carácter multibyte / ancho de conversión de una configuración regional especificada en su construcción .
Original:
std::codecvt_byname is a std::codecvt facet which encapsulates multibyte/wide character conversion rules of a locale specified at its construction.
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You can help to correct and verify the translation. Click here for instructions.
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Cuatro especialidades son proporcionados por la biblioteca estándar
Original:
Four specializations are provided by the standard library
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You can help to correct and verify the translation. Click here for instructions.
You can help to correct and verify the translation. Click here for instructions.
Definido en el archivo de encabezado
<locale> | |
std::codecvt_byname<char, char, std::mbstate_t> | identidad de conversión
Original: identity conversion The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. |
std::codecvt_byname<char16_t, char, std::mbstate_t> | conversión entre UTF-16 y UTF-8 (desde C++11)
Original: conversion between UTF-16 and UTF-8 (desde C++11) The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. |
std::codecvt_byname<char32_t, char, std::mbstate_t> | conversión entre UTF-32 y UTF-8 (desde C++11)
Original: conversion between UTF-32 and UTF-8 (desde C++11) The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. |
std::codecvt_byname<wchar_t, char, std::mbstate_t> | específico de la localidad de conversión entre la cadena y la cadena de ancho estrecho, posiblemente multibyte
Original: locale-specific conversion between wide string and narrow, possibly multibyte, string The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. |
Contenido |
[editar] Las funciones miembro
construye una nueva faceta codecvt_byname Original: constructs a new codecvt_byname facet The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (función miembro pública) | |
destructs una faceta codecvt_byname Original: destructs a codecvt_byname facet The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (función miembro protegida) |
Heredado de std::codecvt
Member types
Miembro de tipo
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
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internT
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extern_type
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externT
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state_type
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stateT
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Member objects
Persona
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 (estático)
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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. (función miembro pública de std::codecvt )
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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. (función miembro pública de std::codecvt )
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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. (función miembro pública de std::codecvt )
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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. (función miembro pública de std::codecvt )
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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. (función miembro pública de std::codecvt )
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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. (función miembro pública de std::codecvt )
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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. (función miembro pública de std::codecvt )
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Protected member functions
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convierte una cadena de internt a externT, tales como cuando se escribe en el archivo 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. (función miembro virtual protegida de std::codecvt )
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[virtual] |
convierte una cadena de externT a internt, como cuando al leer el archivo 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. (función miembro virtual protegida de std::codecvt )
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[virtual] |
genera la secuencia de caracteres de terminación de caracteres externT para la conversión 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. (función miembro virtual protegida de std::codecvt )
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devuelve el número de caracteres externT necesarias para producir un carácter internt, si es 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. (función miembro virtual protegida de std::codecvt )
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Comprueba si la faceta codifica una conversión de identidad para todos los valores de los 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. (función miembro virtual protegida de std::codecvt )
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calcula la longitud de la cadena externT que sería consumida por conversión en tampón 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. (función miembro virtual protegida de std::codecvt )
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devuelve el número máximo de caracteres externT que se podrían transformar en un único carácter 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. (función miembro virtual protegida de std::codecvt )
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Heredado de std::codecvt_base
Miembro de tipo
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 enumeración sin ámbito
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. |
Enumeración 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
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conversión se completó con ningún error
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
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no todos los caracteres de código se convirtieron
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
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encontró un carácter no válido
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
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sin necesidad de conversión, tipos de entrada y salida son los mismos
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] Ejemplo
Este ejemplo demuestra la lectura de un archivo con codificación GB18030 mediante la faceta codecvt de un local GB18030-aware
Original:
This example demonstrates reading a GB18030-encoded file using the codecvt facet from a GB18030-aware locale
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
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Ejecuta este código
#include <iostream> #include <fstream> #include <string> #include <locale> int main() { // GB18030 narrow multibyte encoding std::ofstream("text.txt") << "\x7a" // letter 'z', U+007a "\x81\x30\x89\x38" // letter 'ß', U+00df "\xcb\xae" // CJK ideogram '水' (water), U+6c34 "\x94\x32\xbc\x35"; // musical sign '𝄋' (segno), U+1d10b std::wifstream fin("text.txt"); fin.imbue(std::locale(fin.getloc(), new std::codecvt_byname<wchar_t, char, std::mbstate_t>("zh_CN.gb18030"))); for(wchar_t c; fin.get(c); ) std::cout << std::hex << std::showbase << c << '\n'; }
Salida:
0x7a 0xdf 0x6c34 0x1d10b
[editar] Ver también
Convierte entre codificaciones de caracteres, incluyendo UTF-8, UTF-16, UTF-32. (plantilla de clase) |