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发表于 2010-02-24 10:53 |只看该作者

char* htmldecode(char *p, int *str_len, char *buf)
{
      register i=0, len=0;
      char *q;
      char tmp[8192];
      unsigned int c;
      bzero(buf, sizeof(buf));
      bzero(tmp, sizeof(tmp));
      strncpy(tmp, p, *str_len);
      (*str_len)=0;
      p=tmp;
      while(*(p+i))
      {
            if ((*p=*(p+i)) == '&' && *(p+i+1) == '#' )
            {
                     q=p+i;
                     while(*q != ';') q++;
                     len=q-p-i;
                     c=(atoi(p+i+2));
                     memcpy(buf, &c, 2);
                     buf+=2;
                     p++;
                     (*str_len)+=2;
                     i=q-p;
            }else{
                     c=(*p);
                     memcpy(buf, &c, 2);
                     buf+=2;
                     (*str_len)+=2;
            }
            p++;
      }
      *p='\0';
}

int main(){
      char a[]="aa我@.doc@sadf@";
      int len;
      int i;
      unsigned char *str = (unsigned char *) malloc (strlen(a)*2);
      len=strlen(a);
      htmldecode(a, &len, str);
      printf("%s\n", a);
      for(i=0; i<len; i++)
      printf("%c", str[i]);
      free(str);
      return 0;
}