ANSI与UTF-8编码转换

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将ANSI编码装换为UTF-8在windows MFC环境下测试下面的代码
static int ansi2utf8(IN const char *cSrc, OUT char *cDest)
{
assert(NULL != cSrc && NULL != cDest);

int hResult = SUCCESS;
int nBufferLen = 0;

//MultiByteToWideChar
nBufferLen = MultiByteToWideChar(CP_ACP, 0, cSrc, -1, NULL, 0);
char *cTempBuffer = (char*)malloc(strlen(cSrc) * sizeof(WCHAR));
memset(cTempBuffer, 0, nBufferLen);
nBufferLen = MultiByteToWideChar(CP_ACP, 0, cSrc, -1, (LPWSTR)cTempBuffer, nBufferLen);

//WideCharToMultiByte    切勿想当然，参数个数与前一个函数不一样
nBufferLen = WideCharToMultiByte(CP_UTF8, 0, (LPWSTR)cTempBuffer, -1,
          NULL, 0, NULL, NULL);
cDest = (char*)realloc(cDest, nBufferLen);
memset(cDest, 0, nBufferLen);
nBufferLen = WideCharToMultiByte(CP_UTF8, 0,(LPWSTR)cTempBuffer, -1,
          cDest, nBufferLen, NULL, NULL);

if(0 != nBufferLen)
  hResult = SUCCESS;

return hResult;
}

//以下代码将UTF-8 转换为gb2312

intutf8togb2312(const char *sourcebuf, size_t sourcelen, char *destbuf, size_tdestlen)

{

iconv_t cd;

if( (cd = iconv_open("utf-8", "gb2312")) == 0) //查看相关函数，在Linux中使用locale -a命令查看字符集，转为其他字符集只 //需要改变该参数即可

{

return -1;

}

memset(destbuf,0,destlen);

const char **source = &sourcebuf;

char **dest = &destbuf; //想清楚，此处为什么要保存原始地址？

//注意：该函数回改变指针，如source会累加，调试运行观察source指针。

if((size_t)(-1) == iconv(cd, (char **)source, &sourcelen, dest,&destlen))

{

return -1;

}

iconv_close(cd);

return 0;

}