分类: C/C++
2008-08-07 17:40:35
UTF-8编码: [1,1,1,0,A5,A6,A7,A8], [1,0,B3,B4,B5,B6,B7,B8], [1,0,C3,C4,C5,C6,C7,C8];
对应的UNICODE编码:
[A5,A6,A7,A8,B3,B4,B5,B6], [B7,B8,C3,C4,C5,C6,C7,C8]
因此我们只需进行位操作,即可达到目的;如:
// 把UTF-8转换成Unicode void CChineseCodeLib::UTF_8ToUnicode(WCHAR* 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; }
// Unicode 转换成UTF-8 void CChineseCodeLib::UnicodeToUTF_8(char* pOut,WCHAR* 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; }
// 把Unicode 转换成 GB2312 void CChineseCodeLib::UnicodeToGB2312(char* pOut,unsigned short uData) { WideCharToMultiByte(CP_ACP,NULL,&uData,1,pOut,sizeof(WCHAR),NULL,NULL); return; }
// GB2312 转换成 Unicode void CChineseCodeLib::Gb2312ToUnicode(WCHAR* pOut,char *gbBuffer) { ::MultiByteToWideChar(CP_ACP,MB_PRECOMPOSED,gbBuffer,2,pOut,1); return; }
//GB2312 转为 UTF-8 void CChineseCodeLib::GB2312ToUTF_8(string& pOut,char *pText, int pLen) { char buf[4]; char* rst = new char[pLen (pLen >> 2) 2]; memset(buf,0,4); memset(rst,0,pLen (pLen >> 2) 2); 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 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; }
//UTF-8 转为 GB2312 void CChineseCodeLib::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[i] > 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; }代码在WIN2K,VC 60 下编译,测试通过. 就说这么多吧,具体的大家看代码吧。草草的写的,大家莫笑,欢迎大家一起讨论; 觉觉罗。。。。 下载本文示例代码