/*-
 * Copyright (c) 1990 The Regents of the University of California.
 * All rights reserved.
 *
 * This code is derived from software contributed to Berkeley by
 * Margo Seltzer.
 *
 *
 * Redistribution and use in source and binary forms are permitted provided
 * that: (1) source distributions retain this entire copyright notice and
 * comment, and (2) distributions including binaries display the following
 * acknowledgement:  ``This product includes software developed by the
 * University of California, Berkeley and its contributors'' in the
 * documentation or other materials provided with the distribution and in
 * all advertising materials mentioning features or use of this software.
 * Neither the name of the University nor the names of its contributors may
 * be used to endorse or promote products derived from this software without
 * specific prior written permission.
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
 * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
 */

#ifndef _udb_h
#define _udb_h

/* For MUSH, an int works great as an object ID
 * And attributes are zero terminated strings, so we heave the size out.
 * We hand around attribute identifiers in the last things.
 */

#ifndef	lint
static char *udb_RCSid = "$Id: udb.h,v 1.4 1995/01/19 03:07:57 ambar Exp $";
USE(udb_RCSid);
#endif

typedef char Attr;

#ifdef CACHE_OBJS
typedef unsigned int Objname;

#define ATTR_SIZE(a)	(strlen((a)) + 1)
#endif

  typedef struct Aname {
      unsigned int object;
      unsigned int attrnum;
  }
Aname;

#ifdef CACHE_OBJS
/* In general, we want binary attributes, so we do this. */

  typedef struct Attrib {
      int attrnum;		/* MUSH specific identifier */
      int size;
      char *data;
  }
Attrib;

/* An object is a name, an attribute count, and a vector of attributes */
/* which Attr's are stowed in a contiguous array pointed at by atrs.   */

  typedef struct Obj {
      Objname name;
      int at_count;
      Attrib *atrs;
  }
Obj;

#endif

#define	ONULL	((Obj *)0)
#define ANULL	((Attr *)0)
#define ATNULL	((Attrib *)0)
#define NNULL	((Aname *)0)
#define CNULL	((Cache *)0)

extern Attr *cache_get();
extern int cache_put();
extern int cache_check();
extern int cache_init();
extern void cache_reset();
extern int cache_sync();
extern void cache_del();

#ifdef CACHE_OBJS
extern Obj *FDECL(objfromFILE, (FILE *));
extern int FDECL(objtoFILE, (Obj *, FILE *));

#else
extern Attr *FDECL(attrfromFILE, (FILE *, int));
extern int FDECL(attrtoFILE, (Attr *, FILE *, int));

#endif

#endif /* _udb_h */