C++ STRING 和WSTRING 之间的互相转换函数 和字符串替换

#include <string>
std::string ws2s(const std::wstring& ws)
{
std::string curLocale = setlocale(LC_ALL, NULL); // curLocale = "C";
setlocale(LC_ALL, "chs");
const wchar_t* _Source = ws.c_str();
size_t _Dsize = 2 * ws.size() + 1;
char *_Dest = new char[_Dsize];
memset(_Dest,0,_Dsize);
wcstombs(_Dest,_Source,_Dsize);
std::string result = _Dest;
delete []_Dest;
setlocale(LC_ALL, curLocale.c_str());
return result;
}

std::wstring s2ws(const std::string& s)
{
setlocale(LC_ALL, "chs");
const char* _Source = s.c_str();
size_t _Dsize = s.size() + 1;
wchar_t *_Dest = new wchar_t[_Dsize];
wmemset(_Dest, 0, _Dsize);
mbstowcs(_Dest,_Source,_Dsize);
std::wstring result = _Dest;
delete []_Dest;
setlocale(LC_ALL, "C");
return result;
}

在C++中，字符串替换有很多方法，这里主要说一下STL里的WString中的替换，虽然WString自带了一个Replace函数，但是只能替换一次，太不好了，因此单独写了个替换函数

[函数]

       /** 
        * @brief   实现字符串替换 
        * @param   orignStr 源串 
        * @param   oldStr 查找的串 
        * @param   newStr 替换的新串 
        * @return 返回修改后的串 
        */ 
        static wstring Replace(const wstring& orignStr, const wstring& oldStr, const wstring& newStr);

[实现]

std::wstring Replace( const wstring& orignStr, const wstring& oldStr, const wstring& newStr ) 
{ 
    size_t pos = 0; 
    wstring tempStr = orignStr; 
    wstring::size_type newStrLen = newStr.length(); 
    wstring::size_type oldStrLen = oldStr.length(); 
    while(true) 
    { 
        pos = tempStr.find(oldStr, pos); 
        if (pos == wstring::npos) break;

        tempStr.replace(pos, oldStrLen, newStr);         
        pos += newStrLen;

    }

    return tempStr; 
}