int  is_hotword(wchar  wc,const char *path)
{
    char  filename[100]="\0";
    sprintf(filename,"%s/%s",path,"hotword.txt");
    static  FILE   *fp=NULL;
    static  char  hotword[256]="\0";
    if(!fp)
    {
        fp=fopen(filename,"rt");
        char  buffer[256]="\0";

        while (fgets(buffer, sizeof(buffer) - 1, fp) > 0)
        {
            char *pvalue = (char *)memchr(buffer, '\t', sizeof(buffer));
            int        ikeylen = (pvalue - buffer) > MAX_WORD_LEN ? MAX_WORD_LEN : (pvalue - buffer);
            char  tmpword[10]="\0";
            memcpy(tmpword , buffer ,ikeylen);
            sprintf(hotword,"%s%s",hotword,tmpword);
        }
    }

    size_t inlen = 1*sizeof (wchar );
    size_t outlen = MAX_WORD_LEN;
    char  key[10]="\0";
    char  word[10]="\0";
    memcpy (word, &wc , sizeof (wchar));
    CODE_CONVERT_T::w2g(word, inlen, key, outlen);
    if (  strstr (key,hotword)!=NULL )
    {
        return  1;
    }
    else
    {
        return  0;
    }

}