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    std::c32rtomb

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    < cpp‎ | string‎ | multibyte

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    C++
     
    Strings Bibliothek
    Null-terminierte Strings
    Original:
    Null-terminated strings
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    Byte-Strings
    Multibyte-Strings
    Wide Strings
    Classes
    Original:
    Classes
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    basic_string
    char_traits
     
    Nullterminierten Multibyte Strings
    Wide / Multibyte Konvertierungen
    Original:
    Wide/multibyte conversions
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    mbsinit
    Types
    Original:
    Types
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    mbstate_t
     
    definiert in Header <cuchar>
    std::size_t c32rtomb(char* s, char32_t c32, std::mbstate_t* ps );
    		(seit C++11)
    Konvertiert eine 32-Bit-Zeichen seiner schmalen Multibyte-Darstellung .
    Original:
    Converts a 32-bit wide character to its narrow multibyte representation.
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    Wenn s nicht ein NULL-Zeiger, bestimmt die Funktion die Anzahl der Bytes notwendig, die Multibyte-Zeichen Darstellung c32 (einschließlich etwaiger Schichtfolgen) zu speichern, und speichert die Multibyte-Zeichen Darstellung in der Zeichen-Array, dessen erstes Element wird durch s hingewiesen. An den meisten MB_CUR_MAX bytes kann mit dieser Funktion geschrieben werden .
    Original:
    If s is not a null pointer, the function determines the number of bytes necessary to store the multibyte character representation of c32 (including any shift sequences), and stores the multibyte character representation in the character array whose first element is pointed to by s. At most MB_CUR_MAX bytes can be written by this function.
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    Wenn s ein NULL-Zeiger ist, ist der Anruf entspricht std::c32rtomb(buf, U'\0', ps) für einige interne Puffer buf .
    Original:
    If s is a null pointer, the call is equivalent to std::c32rtomb(buf, U'\0', ps) for some internal buffer buf.
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    Wenn c32 ist die null-Zeichen U'\0', wird ein Null-Byte gespeichert, vorangestellt jedem Schaltvorgang notwendig, um die anfängliche Verschiebung Staat und die Umwandlung Zustandsparameter *ps wird aktualisiert, um den ursprünglichen Schaltzustand stellen wiederherzustellen .
    Original:
    If c32 is the null wide character U'\0', a null byte is stored, preceded by any shift sequence necessary to restore the initial shift state and the conversion state parameter *ps is updated to represent the initial shift state.
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    Wenn das Makro __STDC_UTF_32__ definiert ist, die 32-Bit-Codierung von dieser Funktion verwendet UTF-32 ist, sonst ist die Implementierung definiert. In jedem Fall wird der Multibyte-Codierung durch diese Funktion verwendet von dem derzeit aktiven Sprachumgebung C angegeben .
    Original:
    If the macro __STDC_UTF_32__ is defined, the 32-bit encoding used by this function is UTF-32, otherwise it is implementation-defined. In any case, the multibyte encoding used by this function is specified by the currently active C locale.
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    [Bearbeiten]Parameter

    s -
    Zeiger auf schmalen Zeichen-Array, wo die Multibyte-Zeichen gespeichert werden
    Original:
    pointer to narrow character array where the multibyte character will be stored
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    c32 -
    die 32-Bit-Zeichen zu konvertieren
    Original:
    the 32-bit character to convert
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    ps -
    Zeiger auf die Umwandlung state-Objekt verwendet werden, wenn der Interpretation der Multibyte-String
    Original:
    pointer to the conversion state object used when interpreting the multibyte string
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    [Bearbeiten]Rückgabewert

    Bei Erfolg gibt die Anzahl der Bytes (einschließlich etwaiger Schichtfolgen) geschrieben, um die Zeichen-Array, dessen erstes Element wird durch s hingewiesen. Dieser Wert kann ​0​, z. B. werden Bei der Verarbeitung des ersten char32_t in multi-char32_t-Zeichenfolge (nicht in UTF-32 auftreten) .
    Original:
    On success, returns the number of bytes (including any shift sequences) written to the character array whose first element is pointed to by s. This value may be ​0​, e.g. when processing the first char32_t in multi-char32_t-character sequence (does not occur in UTF-32).
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    Bei einem Fehler (wenn c32 ist keine gültige 32-Bit-Zeichen), kehrt -1, speichert EILSEQ in errno und verlässt *ps in unbestimmten Zustand .
    Original:
    On failure (if c32 is not a valid 32-bit character), returns -1, stores EILSEQ in errno, and leaves *ps in unspecified state.
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    [Bearbeiten]Siehe auch

    (C++11)
    erzeugen die nächsten 32-Bit-Zeichen aus einem engen Multibyte-String
    Original:
    generate the next 32-bit wide character from a narrow multibyte string
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    (Funktion)[edit]
    [virtuell]
    wandelt eine Zeichenkette aus Internt zu externT, wie beim Schreiben in eine Datei
    Original:
    converts a string from internT to externT, such as when writing to file
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    (virtuellen geschützten Member-Funktion of std::codecvt)[edit]
    C documentation for c32rtomb
    Von „https://de.cppreference.com/mwiki/index.php?title=cpp/string/multibyte/c32rtomb&oldid=27921“
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