Espaces de noms
Variantes

    std::codecvt_utf8_utf16

    De cppreference.com

    This page has been machine-translated from the English version of the wiki using Google Translate.

    The translation may contain errors and awkward wording. Hover over text to see the original version. You can help to fix errors and improve the translation. For instructions click here.

    Click here for the English version of this page

    <metanoindex/>

     
    C++
     
    Bibliothèque localisations
    Locales et facettes
    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
    Classification des caractères
    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.
    Conversions
    Original:
    Conversions
    The text has been machine-translated via Google Translate.
    You can help to correct and verify the translation. Click here for instructions.
    Classes de facettes catégorie de base
    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.
    Catégories de facettes
    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.
    Spécifique aux paramètres régionaux facettes
    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.
    Facettes de conversion de code
    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)
    C locale
    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.
     
    <tbody> </tbody>
    Déclaré dans l'en-tête <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 est une facette std::codecvt qui encapsule conversion entre une chaîne UTF-8 octets codée en UTF-16 et chaîne de caractères codé. Si Elem est un type 32-bit, une UTF-16 codet seront utilisés pour chaque caractère 32-bit de la séquence de sortie. Cette facette codecvt peut être utilisé pour lire et écrire des fichiers UTF-8, à la fois du texte et binaire .
    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.

    Paramètres de modèle

    Elem -
    char16_t supporte, char32_t, ou wchar_t
    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 -
    la plus grande valeur de Elem que cette facette va lire ou écrire sans erreur
    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 -
    une constante de std::codecvt_mode type
    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

    Type du membre Définition
    intern_type internT
    extern_type externT
    state_type stateT

    Member objects

    Nom du membre
    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 (
    statique
    Original:
    static
    The text has been machine-translated via Google Translate.
    You can help to correct and verify the translation. Click here for instructions.
    )         		std::locale::id

    Member functions
    Invoque 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.

    (fonction membre publique de std::codecvt) [edit]
    Invoque 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.

    (fonction membre publique de std::codecvt) [edit]
    Invoque 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.

    (fonction membre publique de std::codecvt) [edit]
    Invoque 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.

    (fonction membre publique de std::codecvt) [edit]
    Invoque 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.

    (fonction membre publique de std::codecvt) [edit]
    Invoque 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.

    (fonction membre publique de std::codecvt) [edit]
    Invoque 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.

    (fonction membre publique de std::codecvt) [edit]

    Protected member functions

    [
    virtuel
    Original:
    virtual
    The text has been machine-translated via Google Translate.
    You can help to correct and verify the translation. Click here for instructions.
    ]
    convertit une chaîne de Internt à Externt, comme lors de l'écriture dans un fichier
    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.

    (fonction membre virtuelle protégée de std::codecvt) [edit]
    [
    virtuel
    Original:
    virtual
    The text has been machine-translated via Google Translate.
    You can help to correct and verify the translation. Click here for instructions.
    ]
    convertit une chaîne de Externt à internt, comme lors de la lecture du fichier
    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.

    (fonction membre virtuelle protégée de std::codecvt) [edit]
    [
    virtuel
    Original:
    virtual
    The text has been machine-translated via Google Translate.
    You can help to correct and verify the translation. Click here for instructions.
    ]
    génère la séquence de caractères de terminaison de caractères Externt pour la conversion incomplète
    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.

    (fonction membre virtuelle protégée de std::codecvt) [edit]
    [
    virtuel
    Original:
    virtual
    The text has been machine-translated via Google Translate.
    You can help to correct and verify the translation. Click here for instructions.
    ]
    retourne le nombre de caractères Externt nécessaires pour produire une Internt caractère, si 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.

    (fonction membre virtuelle protégée de std::codecvt) [edit]
    [
    virtuel
    Original:
    virtual
    The text has been machine-translated via Google Translate.
    You can help to correct and verify the translation. Click here for instructions.
    ]
    Teste si la facette code pour une conversion d'identité pour toutes les valeurs des arguments valables
    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.

    (fonction membre virtuelle protégée de std::codecvt) [edit]
    [
    virtuel
    Original:
    virtual
    The text has been machine-translated via Google Translate.
    You can help to correct and verify the translation. Click here for instructions.
    ]
    calcule la longueur de la chaîne Externt qui serait consommée par conversion en tampon Internt proposée
    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.

    (fonction membre virtuelle protégée de std::codecvt) [edit]
    [
    virtuel
    Original:
    virtual
    The text has been machine-translated via Google Translate.
    You can help to correct and verify the translation. Click here for instructions.
    ]
    retourne le nombre de caractères maximum Externt qui pourraient être transformés en un seul caractère 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.

    (fonction membre virtuelle protégée de std::codecvt) [edit]


    Inherited from std::codecvt_base

    Type du membre Définition
    enum result { ok, partial, error, noconv };
    Type d'énumération sans portée
    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.
    Énumération 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
    conversion a été effectuée sans erreur
    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
    tous les caractères de source ont été converties
    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
    rencontré un caractère non valide
    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
    aucune conversion n'est requise, l'entrée et les types de sortie sont les mêmes
    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.

    Exemple

    L'exemple suivant illustre la lecture d'un fichier UTF-8 en une chaîne UTF-16 sur un système 32-bit avec 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';
}

    Résultat : 

    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

    Voir aussi

    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
    convertis entre les codages de caractères, y compris 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.

    (classe générique) [edit]
    (C++11)
    balises pour modifier le comportement des facettes codecvt standard
    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]
    (C++11)
    convertit entre UTF-8 et 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.

    (classe générique) [edit]
    (C++11)
    convertit entre UTF-16 et 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.

    (classe générique) [edit]
    Morty Proxy This is a proxified and sanitized view of the page, visit original site.