字符集转化

最新推荐文章于 2024-03-21 18:46:10 发布

原创最新推荐文章于 2024-03-21 18:46:10 发布 · 258 阅读

0 ·

CC 4.0 BY-SA版权

本文详细介绍了如何在C++中实现UTF8与Unicode之间的转换函数，包括从UTF8到Unicode的转换以及从Unicode到UTF8的转换。

wstring PublicFun::utf8tounicode(const char* buf)
{
int len = MultiByteToWideChar(CP_UTF8, 0, buf, -1, NULL, 0);
if (len == 0) return (L"");

WCHAR* wtemp = new WCHAR[len];

MultiByteToWideChar(CP_UTF8, 0, buf, -1, wtemp, len);

     wstring str = wtemp;
     delete []wtemp;
     return str;
}

string PublicFun::unicodetoutf8(const wchar_t* buf)
{
int len = WideCharToMultiByte(CP_UTF8, 0, buf, -1, NULL, 0, NULL, NULL);
if (len == 0) return "";

char* ctemp = new char[len];
WideCharToMultiByte(CP_UTF8, 0, buf, -1, ctemp, len, NULL, NULL);

     string str = ctemp;
     delete []ctemp;
     return str;
}

wstring PublicFun::gb2312tounicode(const char* buf)
{
     int len = MultiByteToWideChar(CP_ACP, 0, buf, -1, NULL, 0);
     if (len == 0) return (L"");
     WCHAR* wtemp = new WCHAR[len];

MultiByteToWideChar(CP_ACP, 0, buf, -1, wtemp, len);

wstring str = wtemp;
delete []wtemp;

return str;
}

string PublicFun::unicodetogb2312(const wchar_t* buf)
{
int len = WideCharToMultiByte(CP_ACP, 0, buf, -1, NULL, 0, NULL, NULL);
if (len == 0) return "";

char* ctemp = new char[len];

WideCharToMultiByte(CP_ACP, 0, buf, -1, ctemp, len, NULL, NULL);

     string str = ctemp;
     delete []ctemp;
     return str;
}

std::string PublicFun::gb2312toutf8( const char* buf )
{
std::wstring wstr = gb2312tounicode(buf);
return unicodetoutf8(wstr.c_str());
}

std::string PublicFun::utf8togb2312( const char* buf )
{
std::wstring wstr = utf8tounicode(buf);
return unicodetogb2312(wstr.c_str());
}