bool isUtf8(const char* str)
{
return ((0xEF == (unsigned char)(str[0]))
&& (0xBB == (unsigned char)(str[1]))
&& (0xBF == (unsigned char)(str[2])));
}
int code_convert(char *from_charset,char *to_charset, char *inbuf, size_t inlen, char *outbuf, size_t outlen)
{
iconv_t cd;
char **pin = &inbuf;
char **pout = &outbuf;
cd = iconv_open(to_charset, from_charset);
if (0 == cd) return -1;
if (-1 == iconv(cd, pin, &inlen, pout, &outlen))
{
int old_errno = errno;
iconv_close(cd);
errno = old_errno;
return -1;
}
iconv_close(cd);
return 0;
}
int toUtf8(char *inbuf, size_t inlen, char *outbuf, size_t outlen)
{
return code_convert("gb2312", "utf-8", inbuf, inlen, outbuf, outlen);
}
int toGB2312(char *inbuf, size_t inlen, char *outbuf, size_t outlen)
{
return code_convert("utf-8", "gb2312", inbuf, inlen, outbuf, outlen);
}
