1/***********************************************************************
2*                                                                      *
3*               This software is part of the ast package               *
4*          Copyright (c) 1985-2010 AT&T Intellectual Property          *
5*                      and is licensed under the                       *
6*                  Common Public License, Version 1.0                  *
7*                    by AT&T Intellectual Property                     *
8*                                                                      *
9*                A copy of the License is available at                 *
10*            http://www.opensource.org/licenses/cpl1.0.txt             *
11*         (with md5 checksum 059e8cd6165cb4c31e351f2b69388fd9)         *
12*                                                                      *
13*              Information and Software Systems Research               *
14*                            AT&T Research                             *
15*                           Florham Park NJ                            *
16*                                                                      *
17*                 Glenn Fowler <gsf@research.att.com>                  *
18*                  David Korn <dgk@research.att.com>                   *
19*                   Phong Vo <kpv@research.att.com>                    *
20*                                                                      *
21***********************************************************************/
22#include	"dthdr.h"
23
24/*	Close a dictionary
25**
26**	Written by Kiem-Phong Vo (05/25/96)
27*/
28#if __STD_C
29int dtclose(reg Dt_t* dt)
30#else
31int dtclose(dt)
32reg Dt_t*	dt;
33#endif
34{
35	Dtdisc_t	*disc;
36	int		ev = 0;
37
38	if(!dt || dt->nview > 0 ) /* can't close if being viewed */
39		return -1;
40
41	/* announce the close event to see if we should continue */
42	disc = dt->disc;
43	if(disc->eventf &&
44	   (ev = (*disc->eventf)(dt,DT_CLOSE,NIL(Void_t*),disc)) < 0)
45		return -1;
46
47	if(dt->view)	/* turn off viewing */
48		dtview(dt,NIL(Dt_t*));
49
50	if(ev == 0) /* release all allocated data */
51	{	(void)(*(dt->meth->searchf))(dt,NIL(Void_t*),DT_CLEAR);
52		if(dtsize(dt) > 0)
53			return -1;
54
55		if(dt->data->ntab > 0)
56			(*dt->memoryf)(dt,(Void_t*)dt->data->htab,0,disc);
57		(*dt->memoryf)(dt,(Void_t*)dt->data,0,disc);
58	}
59
60	if(dt->type == DT_MALLOC)
61		free((Void_t*)dt);
62	else if(ev == 0 && dt->type == DT_MEMORYF)
63		(*dt->memoryf)(dt, (Void_t*)dt, 0, disc);
64
65	if(disc->eventf)
66		(void)(*disc->eventf)(dt, DT_ENDCLOSE, NIL(Void_t*), disc);
67
68	return 0;
69}
70