std::wbuffer_convert::rdbuf
From cppreference.com
< cpplrm; | localelrm; | wbuffer convert
| Defined in header <locale>
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||
| std::streambuf* rdbuf() const; |
(1) | |
| std::streambuf* rdbuf( std::streambuf* bytebuf ); |
(2) | |
1) returns the pointer to the underlying byte stream
2) replaces the associated byte stream with bytebuf
.
Return value
1) the current underlying byte stream
2) the previous byte stream
Example
Run this code
#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"z" // 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"; }
Output:
Reading from a UTF-8 stringbuf via wbuffer_convert: 0x7a 0xdf 0x6c34 0x1d10b Sending UCS4 data to std::cout via wbuffer_convert: z
See also
| constructs a new wbuffer_convert (public member function) |