std::wbuffer_convert::rdbuf
STD：：WBuffer[医]皈依：：rdbuf
| Defined in header | | |
|---|---|---|
| std::streambuf* rdbuf() const; | (1) | |
| std::streambuf* rdbuf( std::streambuf* bytebuf | (2) | |
1%29返回指向基础字节流的指针。
2%29将关联的字节流替换为bytebuf...
返回值
1%29当前底层字节流。
2%29以前的字节流。
例
二次
#include <iostream>
#include <sstream>
#include <locale>
#include <codecvt>
int main()
{
// convert UTF-8 to UCS4
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(&utf8buf
std::wistream ucsbuf(&conv
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';
// reuse the same wbuffer_convert to handle UCS4 to UTF-8 output
conv.rdbuf(std::cout.rdbuf()
std::wostream out(&conv
std::cout << "Sending UCS4 data to std::cout via wbuffer_convert:\n";
out << L"z\u00df\u6c34\U0001d10b\n";
}
二次
产出：
二次
Reading from a UTF-8 stringbuf via wbuffer_convert:
0x7a
0xdf
0x6c34
0x1d10b
Sending UCS4 data to std::cout via wbuffer_convert:
zß水?
二次
另见
| (constructor) | constructs a new wbuffer_convert (public member function) |
|---|
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