std::wbuffer_convert::wbuffer_convert
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< cpp | locale | wbuffer convert
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| wbuffer_convert( std::streambuf* bytebuf = 0, Codecvt* pcvt = new Codecvt, |
(1) | |
Constructs the wbuffer_convert object with the specified underlying byte stream, specified codecvt facet, and specified initial conversion state (all parameters are optional)
[編集] パラメータ
| bytebuf | - | pointer to std::streambuf to serve as the underlying narrow character stream |
| pcvt | - | pointer to a standalone (not managed by a locale) std::codecvt facet |
| state | - | the initial value of the character conversion state |
[編集] 例
#include <iostream> #include <sstream> #include <locale> #include <codecvt> int main() { // wrap a UTF-8 string stream in a UCS4 wbuffer_convert std::stringbuf utf8buf(u8"z\u00df\u6c34\U0001d10b"); // or u8"zß水𝄋" // or "\x7a\xc3\x9f\xe6\xb0\xb4\xf0\x9d\x84\x8b"; std::wbuffer_convert<std::codecvt_utf8<wchar_t>> conv_in(&utf8buf); std::wistream ucsbuf(&conv_in); std::cout << "Reading from a UTF-8 stringbuf via wbuffer_convert:\n"; for(wchar_t c; ucsbuf.get(c); ) std::cout << std::hex << std::showbase << c << '\n'; // wrap a UTF-8 aware std::cout in a UCS4 wbuffer_convert to output UCS4 std::wbuffer_convert<std::codecvt_utf8<wchar_t>> conv_out(std::cout.rdbuf()); std::wostream out(&conv_out); std::cout << "Sending UCS4 data to std::cout via wbuffer_convert:\n"; out << L"z\u00df\u6c34\U0001d10b\n"; }
Output:
Reading from a UTF-8 stringbuf via wbuffer_convert produces 0x7a 0xdf 0x6c34 0x1d10b Sending UCS4 data to std::cout via wbuffer_convert: zß水𝄋
