UTF-8、Unicode、Gb2312编码之间的转换类

class CChineseCode{   public:// 把UTF-8转换成Unicode       static void UTF_8ToUnicode(wchar_t* pOut,char *pText);//Unicode 转换成UTF-8       static void UnicodeToUTF_8(char* pOut,wchar_t* pText);// 把Unicode 转换成 GB2312       static void UnicodeToGB2312(char* pOut,wchar_t uData);// GB2312 转换成　Unicode       static void Gb2312ToUnicode(wchar_t* pOut,char *gbBuffer);//GB2312 转为 UTF-8       static void GB2312ToUTF_8(string& pOut,char *pText, int pLen);//UTF-8 转为 GB2312       static void UTF_8ToGB2312(string &pOut, char *pText, int pLen);};类实现void CChineseCode::UTF_8ToUnicode(wchar_t* pOut,char *pText){    char* uchar = (char *)pOut;    uchar[1] = ((pText[0] & 0x0F) << 4) + ((pText[1] >> 2) & 0x0F);    uchar[0] = ((pText[1] & 0x03) << 6) + (pText[2] & 0x3F);    return;}void CChineseCode::UnicodeToUTF_8(char* pOut,wchar_t* pText){    // 注意 WCHAR高低字的顺序,低字节在前，高字节在后    char* pchar = (char *)pText;    pOut[0] = (0xE0 | ((pchar[1] & 0xF0) >> 4));    pOut[1] = (0x80 | ((pchar[1] & 0x0F) << 2)) + ((pchar[0] & 0xC0) >> 6);    pOut[2] = (0x80 | (pchar[0] & 0x3F));    return;}void CChineseCode::UnicodeToGB2312(char* pOut,wchar_t uData){    WideCharToMultiByte(CP_ACP,NULL,&uData,1,pOut,sizeof(wchar_t),NULL,NULL);    return;}     void CChineseCode::Gb2312ToUnicode(wchar_t* pOut,char *gbBuffer){    ::MultiByteToWideChar(CP_ACP,MB_PRECOMPOSED,gbBuffer,2,pOut,1);    return ;}void CChineseCode::GB2312ToUTF_8(string& pOut,char *pText, int pLen){    char buf[4];    int nLength = pLen* 3;    char* rst = new char[nLength];        memset(buf,0,4);    memset(rst,0,nLength);        int i = 0;    int j = 0;          while(i < pLen)    {            //如果是英文直接复制就可以            if( *(pText + i) >= 0)            {                    rst[j++] = pText[i++];            }            else            {                    wchar_t pbuffer;                    Gb2312ToUnicode(&pbuffer,pText+i);                                        UnicodeToUTF_8(buf,&pbuffer);                                        unsigned short int tmp = 0;                    tmp = rst[j] = buf[0];                    tmp = rst[j+1] = buf[1];                    tmp = rst[j+2] = buf[2];                                            j += 3;                    i += 2;            }    }    rst[j] = '\0';    //返回结果    pOut = rst;                 delete []rst;           return;}void CChineseCode::UTF_8ToGB2312(string &pOut, char *pText, int pLen){    char * newBuf = new char[pLen];    char Ctemp[4];    memset(Ctemp,0,4);    int i =0;    int j = 0;        while(i < pLen)    {        if(pText > 0)        {                newBuf[j++] = pText[i++];                               }        else                         {                WCHAR Wtemp;                UTF_8ToUnicode(&Wtemp,pText + i);                        UnicodeToGB2312(Ctemp,Wtemp);                            newBuf[j] = Ctemp[0];                newBuf[j + 1] = Ctemp[1];                i += 3;                    j += 2;           }    }    newBuf[j] = '\0';    pOut = newBuf;    delete []newBuf;    return;}