1  struct _IO_FILE;
       2  typedef struct _IO_FILE FILE;
       3  typedef struct _message
       4  {
       5    FILE *fp;
       6  } MESSAGE;
       7  extern FILE *fopen (const char *__restrict __filename,
       8                      const char *__restrict __modes);
       9  FILE *f (void);
      10  int imap_fetch_message (int i, MESSAGE *msg, char *p)
      11  {
      12    if ((msg->fp = i ? 0 : f ()))
      13      return 0;
      14    if (p)
      15      msg->fp = fopen (p, "r");
      16    return -1;
      17  }