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); }