std::wstring_convert::converted
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. |
<metanoindex/>
<tbody> </tbody>| Déclaré dans l'en-tête <locale>
|
||
std::size_t converted() const; |
||
Returns the number of source characters that were processed by the most recent from_bytes() or to_bytes().
Retourne la valeur
The number of characters consumed by the most recent conversion operation.
Exemple
#include <iostream>
#include <string>
#include <locale>
#include <codecvt>
int main()
{
std::string utf8 = u8"z\u00df\u6c34\U0001d10b"; // or u8"zß水𝄋"
// or "\x7a\xc3\x9f\xe6\xb0\xb4\xf0\x9d\x84\x8b";
std::cout << "original UTF-8 string size: " << utf8.size() << '\n';
// the UTF-8 - UTF-32 standard conversion facet
std::wstring_convert<std::codecvt_utf8<char32_t>, char32_t> cvt;
// UTF-8 to UTF-32
std::u32string utf32 = cvt.from_bytes(utf8);
std::cout << "UTF-32 string size: " << utf32.size() << '\n';
std::cout << "converted() == " << cvt.converted() << '\n';
// UTF-32 to UTF-8
utf8 = cvt.to_bytes(utf32);
std::cout << "new UTF-8 string size: " << utf8.size() << '\n';
std::cout << "converted() == " << cvt.converted() << '\n';
}
Résultat :
original UTF-8 string size: 10
UTF-32 string size: 4
converted() == 10
new UTF-8 string size: 10
converted() == 4
Voir aussi
convertit une chaîne de large dans une chaîne d'octets Original: converts a wide string into a byte string 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) | |
convertit une chaîne d'octets en une chaîne large Original: converts a byte string into a wide string 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) |