std::codecvt::unshift, std::codecvt::do_unshift

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C++

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Libreria di Utilità

Stringhe

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Localizzazione

Espressioni regolari (C++11)

Operazioni atomicche (C++11)

Multithreading (C++11)

 

Localizzazioni libreria

Impostazioni internazionali e sfaccettature 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
use_facet	has_facet
Carattere classificazione 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.
isspace isblank (C++11) iscntrl isupper islower isalpha	isdigit ispunct isxdigit isalnum isprint isgraph
Conversioni Original: Conversions The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
toupper tolower	wstring_convert (C++11) wbuffer_convert (C++11)
Facet categoria classi di 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.
ctype_base codecvt_base messages_base	time_base money_base
Facet categorie 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.
ctype ctype<char> codecvt collate messages time_get time_put	num_get num_put numpunct money_get money_put moneypunct
Locale specifici aspetti 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.
ctype_byname ctype_byname<char> codecvt_byname messages_byname collate_byname	time_get_byname time_put_byname numpunct_byname moneypunct_byname
Codice di conversione sfaccettature 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 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.
setlocale localeconv lconv	LC_ALL LC_COLLATE LC_CTYPE LC_MONETARY LC_NUMERIC LC_TIME

 

std::codecvt

Membri funzioni Original: Member functions The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

codecvt::codecvt

codecvt::~codecvt

codecvt::out codecvt::do_out

codecvt::in codecvt::do_in

codecvt::unshift codecvt::do_unshift

codecvt::encoding codecvt::do_encoding

codecvt::always_noconv codecvt::do_always_noconv

codecvt::length codecvt::do_length

codecvt::max_length codecvt::do_max_length

 

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Elemento definito nell'header <locale>
public: result unshift( stateT& state, externT* to, externT* to_end, externT*& to_next) const	(1)
protected: result do_unshift( stateT& state, externT* to, externT* to_end, externT*& to_next) const	(2)

1)

funzione membro pubblica, chiama la do_unshift funzione membro della classe più derivata.

Original:

public member function, calls the member function do_unshift of the most derived class.

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2)

se la codifica rappresentato da questa faccetta codecvt è stato-dipendente, e state rappresenta uno stato di conversione che non è stato spostamento iniziale, scrive i caratteri necessari per ritornare allo stato iniziale di spostamento. I personaggi sono scritti in un array di caratteri il cui primo elemento è puntato da to. Non più di caratteri to_end-to sono scritti. Il to_next parametro viene aggiornato per puntare un passato l'ultimo carattere scritto.

Original:

if the encoding represented by this codecvt facet is state-dependent, and state represents a conversion state that is not the initial shift state, writes the characters necessary to return to the initial shift state. The characters are written to a character array whose first element is pointed to by to. No more than to_end-to characters are written. The parameter to_next is updated to point one past the last character written.

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Valore di ritorno

Un valore di std::codecvt_base::result tipo, che indica lo stato di successo come segue:

Original:

A value of type std::codecvt_base::result, indicating the success status as follows:

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ok	tutti i caratteri necessari sono stati scritti. state ora rappresenta lo stato iniziale del cambio Original: all necessary characters were written. state now represents initial shift state The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
partial	abbastanza spazio nel buffer di uscita. to_next == to_end Original: not enough space in the output buffer. to_next == to_end The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
error	Errore non specificato Original: unspecified error occurred The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
noconv	la codifica non è dipendente dallo stato, nessuna sequenza di terminazione necessarie Original: the encoding is not state-dependent, no termination sequence necessary The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

La specializzazione non convertire std::codecvt<char, char, std::mbstate_t> restituisce sempre std::codecvt_base::noconv

Original:

The non-converting specialization std::codecvt<char, char, std::mbstate_t> always returns std::codecvt_base::noconv

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Note

Questa funzione viene chiamata da std::basic_filebuf::close() e in altre situazioni in cui la finalizzazione di un dipendente dallo stato sequenza di caratteri multibyte.

Original:

This function is called by std::basic_filebuf::close() and in other situations when finalizing a state-dependent multibyte character sequence.

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Vedi anche

wcrtomb	converte un carattere esteso alla sua rappresentazione multibyte, determinato stato Original: converts a wide character to its multibyte representation, given state The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (funzione)
do_out [virtuale]	converte una stringa da internt a externT, come ad esempio durante la scrittura su file 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. (virtuale protetto funzione membro)