C++常用函数

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ut-8f转unicode

wstring UTF8ToUnicode(const string&str){int len =0;len = str.length();int unicodeLen = MultiByteToWideChar(CP_UTF8,0,str.c_str(),-1,NULL,0);wchar_t *pUnicode = new wchar_t[unicodeLen+1];memset(pUnicode,0,(unicodeLen+1)*sizeof(wchar_t));MultiByteToWideChar(CP_UTF8,0,str.c_str(),-1,(WCHAR*)pUnicode,unicodeLen);wstring rt;rt = (wchar_t*)pUnicode;delete []pUnicode;return rt;}

unicode转UTF-8

string UnicodeToUTF(const wstring&str){char* pElementText;int len =0;len = WideCharToMultiByte(CP_UTF8,0,str.c_str(),-1,NULL,0,NULL,NULL);pElementText = new char[len+1];memset(pElementText,0,(len+1)*sizeof(char));WideCharToMultiByte(CP_UTF8,0,str.c_str(),-1,pElementText,len,NULL,NULL);string strText;strText = pElementText;delete[] pElementText;return strText;}

//跨平台

string ws2s(const wstring ws){string curLocale = setlocale(LC_ALL,NULL);setlocale(LC_ALL,"chs");const wchar_t* Sourse = ws.c_str();size_t dSize = ws.size() * 2 + 1;char* dest = new char[dSize];memset(dest,0,dSize);wcstombs(dest,Sourse,dSize);string result = dest;delete[] dest;setlocale(LC_ALL,curLocale.c_str());return result;}wstring s2ws(const string&s){string curLocale = setlocale(LC_ALL,NULL);setlocale(LC_ALL,"chs");const char* source = s.c_str();size_t dSize = s.size()+1;wchar_t* dest = new wchar_t[dSize];memset(dest,0,dSize);mbstowcs(dest,source,dSize);wstring result = dest;delete[] dest;setlocale(LC_ALL,curLocale.c_str());return result;}