编码UTF8,UCS...[1]

int UCS2UTF8(wchar_t* pUCS,char* pUTF8)
{
 int UCSlen = 0, UTF8len = 0, i;
 char* pTempUTF8 = NULL;
 UCSlen = wcslen(pUCS);

 if(pUCS == NULL || pUTF8 == NULL)
  return -1;
 
 pTempUTF8 = pUTF8;
 for(i = 0; i < UCSlen; i++)
 {
  if(pUCS[i] <= 0x007F)//1 byte 0xxxxxxx
  {
   *(pTempUTF8++) = LOBYTE(pUCS[i]);
   UTF8len++;
  }
  else if(pUCS[i] <=0x07FF)//2 bytes 110xxxxx 10xxxxxx
  {
   *(pTempUTF8++) = HIBYTE(pUCS[i] << 2) & 0x3F | 0xC0;
   *(pTempUTF8++) = LOBYTE(pUCS[i] & 0x3f) | 0x80;
   UTF8len += 2;
  }
  else//3 bytes 1110xxxx 10xxxxxx 10xxxxxx
  {
   *(pTempUTF8++) = HIBYTE(pUCS[i] >> 4) | 0xe0;
   *(pTempUTF8++) = HIBYTE(pUCS[i] << 2) & 0x3F | 0x80;
   *(pTempUTF8++) = LOBYTE(pUCS[i]) & 0x3F | 0x80;
   UTF8len += 3;
  }
 }
 
 return UTF8len;
}
int UTF82UCS(char *pUTF8, wchar_t *pUCS)
{
 int UCSlen = 0, i;
 char *pTempUCS = NULL;
 char *pTempUTF8 = NULL;

 if(pUCS == NULL || pUTF8 == NULL)
  return -1;
 UCSlen = MultiByteToWideChar(CP_UTF8,0,pUTF8,-1,NULL,0);
 UCSlen--;
 pTempUCS = (char*)pUCS;
 pTempUTF8 = pUTF8;
 for(i = 0; i < UCSlen; i++)
 {
  if((*pTempUTF8) <= 0x7F)  //1 byte
  {
   *(pTempUCS + 1) = 0x00;
   *pTempUCS = *(pTempUTF8++);
   pTempUCS += 2;
  }
  else if((*pTempUTF8) >= 0xC0 && (*pTempUTF8) <= 0xDF)//2 bytes
  {
   *(pTempUCS + 1) = ((*pTempUTF8) >> 2) & 0x07;
   *pTempUCS = ((*pTempUTF8) << 6) | (*(pTempUTF8 + 1) & 0x3F);
   pTempUTF8 += 2;
   pTempUCS += 2;
  }
  else//3 bytes
  {
   *(pTempUCS + 1) = ((*pTempUTF8) << 4) | ((*(pTempUTF8 + 1) >> 2) & 0x0F);
   pTempUTF8++;
   *pTempUCS = ((*pTempUTF8) << 6) | (*(pTempUTF8+1) & 0x3F);
   pTempUTF8 += 2;
   pTempUCS += 2;
  }
 }
 return UCSlen;
}

int ToUCS(char *p,wchar_t* pUCS,int codepage)
{
 int len = 0;

 if(pUCS == NULL || p == NULL)
  return -1;
 len = MultiByteToWideChar(codepage,0,p,-1,NULL,0);
 MultiByteToWideChar(codepage,0,p,-1,pUCS,len);
 return len;
}

int UCSTo(wchar_t* pUCS,char *p,int codepage)
{
 int len = 0;
 
 if(pUCS == NULL || pBIG5 == NULL)
  return -1;

 len = WideCharToMultiByte(codepage,0,pUCS,-1,NULL,0,NULL,NULL);
 WideCharToMultiByte(codepage,0,pUCS,-1,p,len,NULL,NULL);
 len--;
 return len;
}