UTF-8与GBK(或GB2312)编码转换

UTF-8与GBK(或GB2312)编码转换.cpp

string GBKToUTF8(const char* strGBK)  
{  
    int len = MultiByteToWideChar(CP_ACP, 0, strGBK, -1, NULL, 0);  
    wchar_t* wstr = new wchar_t[len+1];  
    memset(wstr, 0, len+1);  
    MultiByteToWideChar(CP_ACP, 0, strGBK, -1, wstr, len);  
    len = WideCharToMultiByte(CP_UTF8, 0, wstr, -1, NULL, 0, NULL, NULL);  
    char* str = new char[len+1];  
    memset(str, 0, len+1);  
    WideCharToMultiByte(CP_UTF8, 0, wstr, -1, str, len, NULL, NULL);  
    string strTemp = str;  
    if(wstr) delete[] wstr;  
    if(str) delete[] str;  
    return strTemp;  
}   

string UTF8ToGBK(const char* strUTF8)  
{  
    int len = MultiByteToWideChar(CP_UTF8, 0, strUTF8, -1, NULL, 0);  
    wchar_t* wszGBK = new wchar_t[len+1];  
    memset(wszGBK, 0, len*2+2);  
    MultiByteToWideChar(CP_UTF8, 0, strUTF8, -1, wszGBK, len);  
    len = WideCharToMultiByte(CP_ACP, 0, wszGBK, -1, NULL, 0, NULL, NULL);  
    char* szGBK = new char[len+1];  
    memset(szGBK, 0, len+1);  
    WideCharToMultiByte(CP_ACP, 0, wszGBK, -1, szGBK, len, NULL, NULL);  
    string strTemp(szGBK);  
    if(wszGBK) delete[] wszGBK;  
    if(szGBK) delete[] szGBK;  
    return strTemp;  
}