C++ en_US.UTF-8 语言环境的 Windows 等效项是什么？
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What is the Windows equivalent for en_US.UTF-8 locale?
提问by ?imon Tóth
If I want to make the following work on Windows, what is the correct locale and how do I detect that it is actually present: Does this code work universaly, or is it just my system?
如果我想在 Windows 上进行以下工作，正确的语言环境是什么，我如何检测它是否实际存在： 此代码是否通用，还是只是我的系统？
采纳答案by Nemanja Trifunovic
Basically, you are out of luck: http://www.siao2.com/2007/01/03/1392379.aspx
基本上，你运气不好：http: //www.siao2.com/2007/01/03/1392379.aspx
回答by Cubbi
Although there isn't good support for named locales, Visual Studio 2010 does include the UTF-8 conversion facets required by C++11: std::codecvt_utf8for UCS2 and std::codecvt_utf8_utf16for UTF-16:
尽管对命名语言环境没有很好的支持，但 Visual Studio 2010 确实包含了 C++11 所需的 UTF-8 转换方面：std::codecvt_utf8用于 UCS2 和std::codecvt_utf8_utf16用于 UTF-16：
#include <fstream>
#include <iostream>
#include <string>
#include <locale>
#include <codecvt>
void prepare_file()
{
// UTF-8 data
char utf8[] = {'\x7a', // latin small letter 'z' U+007a
'\xe6','\xb0','\xb4', // CJK ideograph "water" U+6c34
'\xf0','\x9d','\x84','\x8b'}; // musical sign segno U+1d10b
std::ofstream fout("text.txt");
fout.write(utf8, sizeof utf8);
}
void test_file_utf16()
{
std::wifstream fin("text.txt");
fin.imbue(std::locale(fin.getloc(), new std::codecvt_utf8_utf16<wchar_t>));
std::cout << "Read from file using UTF-8/UTF-16 codecvt\n";
for(wchar_t c; fin >> c; )
std::cout << std::hex << std::showbase << c << '\n';
}
void test_file_ucs2()
{
std::wifstream fin("text.txt");
fin.imbue(std::locale(fin.getloc(), new std::codecvt_utf8<wchar_t>));
std::cout << "Read from file using UTF-8/UCS2 codecvt\n";
for(wchar_t c; fin >> c; )
std::cout << std::hex << std::showbase << c << '\n';
}
int main()
{
prepare_file();
test_file_utf16();
test_file_ucs2();
}
this outputs, on my Visual Studio 2010 EE SP1
这个输出，在我的 Visual Studio 2010 EE SP1 上
Read from file using UTF-8/UTF-16 codecvt
0x7a
0x6c34
0xd834
0xdd0b
Read from file using UTF-8/UCS2 codecvt
0x7a
0x6c34
0xd10b
Press any key to continue . . .
