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std::mbrtoc16

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< cpp‎ | string‎ | multibyte

 
 
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
 
Defined in header <cuchar>
std::size_t mbrtoc16( char16_t* pc16,

                      const char* s,
                      std::size_t n,

                      std::mbstate_t* ps );
(seit C++11)
Konvertiert einen schmalen Multibyte-Zeichen in 16-Bit-Zeichen-Darstellung (in der Regel, UTF-16) .
Original:
Converts a narrow multibyte character to 16-bit character representation (typically, UTF-16).
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Wenn s nicht ein NULL-Zeiger, prüft in den meisten n Bytes des Multibyte-String, beginnend mit dem Byte, auf das s, um die Anzahl von Bytes um den nächsten Multibyte-Zeichen (einschließlich etwaiger Schichtfolgen) vervollständigen bestimmen. Wenn die Funktion bestimmt, dass die nächste Multibyte-Zeichen in s vollständig und gültig ist, wandelt sie in die entsprechende 16-Bit-Zeichen und speichert sie in *pc16 (wenn pc16 nicht null ist) .
Original:
If s is not a null pointer, inspects at most n bytes of the multibyte character string, beginning with the byte pointed to by s to determine the number of bytes necessary to complete the next multibyte character (including any shift sequences). If the function determines that the next multibyte character in s is complete and valid, converts it to the corresponding 16-bit character and stores it in *pc16 (if pc16 is not null).
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Wenn die Multibyte-Zeichen in *s entspricht einer multi-char16_t Sequenz (zB ein Surrogat-Paar in UTF-16), dann nach dem ersten Aufruf dieser Funktion wird *ps in einer solchen Weise, dass der nächste Aufruf mbrtoc16 wird schreiben, die aktualisierte zusätzliche char16_t, ohne Berücksichtigung *s .
Original:
If the multibyte character in *s corresponds to a multi-char16_t sequence (e.g. a surrogate pair in UTF-16), then after the first call to this function, *ps is updated in such a way that the next call to mbrtoc16 will write out the additional char16_t, without considering *s.
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Wenn s ein NULL-Zeiger ist, die Werte der n und pc16 werden ignoriert und der Anruf ist äquivalent zu std::mbrtoc16(NULL, "", 1, ps) .
Original:
If s is a null pointer, the values of n and pc16 are ignored and the call is equivalent to std::mbrtoc16(NULL, "", 1, ps).
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Wenn die weite Zeichen produziert, ist das Null-Zeichen stellt die Umwandlung Zustand *ps die erste Schaltzustand .
Original:
If the wide character produced is the null character, the conversion state *ps represents the initial shift state.
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Wenn das Makro __STDC_UTF_16__ definiert ist, ist die 16-Bit-Codierung von dieser Funktion verwendet UTF-16, ansonsten ist die Implementierung definiert .
Original:
If the macro __STDC_UTF_16__ is defined, the 16-bit encoding used by this function is UTF-16, otherwise it is implementation-defined.
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[Bearbeiten] Parameter

pc16 -
Zeiger auf die Stelle, wo das resultierende 16-Bit-Zeichen geschrieben werden
Original:
pointer to the location where the resulting 16-bit character will be written
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s -
Zeiger auf die Multibyte Zeichenkette als Eingabe verwendet
Original:
pointer to the multibyte character string used as input
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n -
Grenze für die Anzahl von Bytes in s, die untersucht werden können
Original:
limit on the number of bytes in s that can be examined
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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

Die erste, die der folgenden gilt:
Original:
The first of the following that applies:
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  • 0 wenn der Charakter von s umgewandelt (und in *pc16 wenn nicht null) war die Null-Zeichen
    Original:
    0 if the character converted from s (and stored in *pc16 if non-null) was the null character
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  • die Anzahl der Bytes [1...n] des Multibyte erfolgreich aus s umgewandelt
    Original:
    the number of bytes [1...n] of the multibyte character successfully converted from s
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  • -3 wenn die nächste char16_t aus einem Multi-char16_t Zeichen (zB ein Surrogat-Paar) wurde nun auf *pc16 geschrieben worden. Keine Bytes aus dem Eingangssignal in diesem Fall verarbeitet .
    Original:
    -3 if the next char16_t from a multi-char16_t character (e.g. a surrogate pair) has now been written to *pc16. No bytes are processed from the input in this case.
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  • -2 wenn die nächsten n bytes bilden eine unvollständige, aber bisher gültige Multibyte-Zeichens. Nichts wird dem *pc16 geschrieben .
    Original:
    -2 if the next n bytes constitute an incomplete, but so far valid, multibyte character. Nothing is written to *pc16.
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  • -1 wenn die Kodierung Fehler auftritt. Nichts zu *pc16 geschrieben wird, wird der Wert EILSEQ in errno gespeichert und der Wert, wenn *ps ist unbegrenzt .
    Original:
    -1 if encoding error occurs. Nothing is written to *pc16, the value EILSEQ is stored in errno and the value if *ps is unspecified.
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[Bearbeiten] Siehe auch

(C++11)
konvertiert einen 16-Bit breiten Zeichen Multibyte-String einzugrenzen
Original:
convert a 16-bit wide character to narrow multibyte string
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(Funktion) [edit]
[virtuell]
wandelt eine Zeichenkette aus externT um Internt wie beim Lesen aus Datei
Original:
converts a string from externT to internT, such as when reading from file
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(virtuellen geschützten Member-Funktion of std::codecvt) [edit]
C documentation for mbrtoc16