std::codecvt::encoding, std::codecvt::do_encoding
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<metanoindex/>
<tbody> </tbody>| definiert in Header <locale>
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public: int encoding() const |
(1) | |
protected: int do_encoding() const |
(2) | |
1)
öffentliche Member-Funktion ruft die Member-Funktion
do_encoding der am meisten abgeleiteten Klasse .Original:
public member function, calls the member function
do_encoding of the most derived class.The text has been machine-translated via Google Translate.
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.
2) if the encoding represented by this codecvt facet maps each internal character to the same, constant number of external characters, returns that number. If the encoding is variable-length (e.g. UTF-8 or UTF-16), returns 0. If the encoding is state-dependent, returns -1.
Rückgabewert
The exact number of externT characters that correspond to one internT character, if constant. 0 if the number varies, -1 if the encoding is state-dependent.
Die nicht-Converting-Spezialisierung
std::codecvt<char, char, std::mbstate_t> kehrt 1Original:
The non-converting specialization
std::codecvt<char, char, std::mbstate_t> returns 1The text has been machine-translated via Google Translate.
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.
Ausnahmen
Beispiel
#include <locale>
#include <iostream>
int main()
{
std::cout << "en_US.utf8 is a variable-length encoding, encoding() returns "
<< std::use_facet<std::codecvt<wchar_t, char, std::mbstate_t>>(
std::locale("en_US.utf8")
).encoding() << '\n';
std::cout << "zh_CN.gb18030 is also variable-length, encoding() == "
<< std::use_facet<std::codecvt<wchar_t, char, std::mbstate_t>>(
std::locale("zh_CN.gb18030")
).encoding() << '\n';
std::cout << "ru_RU.koi8r is a single-byte encoding encoding() == "
<< std::use_facet<std::codecvt<wchar_t, char, std::mbstate_t>>(
std::locale("ru_RU.koi8r")
).encoding() << '\n';
}
Output:
en_US.utf8 is a variable-length encoding, encoding() returns 0
zh_CN.gb18030 is also variable-length, encoding() == 0
ru_RU.koi8r is a single-byte encoding encoding() == 1
Siehe auch
MB_CUR_MAX |
maximale Anzahl von Bytes in einer Multibyte-Zeichen in der aktuellen C locale
(Makro-Variablen) Original: maximum number of bytes in a multibyte character in the current C locale (Makro-Variablen) The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. |
[virtuell] |
gibt die maximale Anzahl von externT Zeichen, die in einem einzigen Internt Zeichen umgewandelt werden konnte 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. (virtuellen geschützten Member-Funktion) |