dtclose.c   [plain text]

/*
    This software may only be used by you under license from AT&T Corp.
    ("AT&T").  A copy of AT&T's Source Code Agreement is available at
    AT&T's Internet website having the URL:
    <http://www.research.att.com/sw/tools/graphviz/license/source.html>
    If you received this software without first entering into a license
    with AT&T, you have an infringing copy of this software and cannot use
    it without violating AT&T's intellectual property rights.
*/
#include	"dthdr.h"

#ifdef DMALLOC
#include "dmalloc.h"
#endif

/*	Close a dictionary
**
**	Written by Kiem-Phong Vo (05/25/96)
*/
#if __STD_C
int dtclose(reg Dt_t* dt)
#else
int dtclose(dt)
reg Dt_t*	dt;
#endif
{
	if(dt->nview > 0 ) /* can't close if being viewed */
		return -1;

	if(dt->view)	/* turn off viewing */
		dtview(dt,NIL(Dt_t*));

	/* announce the close event */
	if(dt->disc->eventf &&
	   (*dt->disc->eventf)(dt,DT_CLOSE,NIL(Void_t*),dt->disc) < 0)
		return -1;

	/* release all allocated data */
	(void)(*(dt->meth->searchf))(dt,NIL(Void_t*),DT_CLEAR);
	if(dtsize(dt) > 0)
		return -1;

	if(dt->data->ntab > 0)
		(*dt->memoryf)(dt,(Void_t*)dt->data->htab,0,dt->disc);
	(*dt->memoryf)(dt,(Void_t*)dt->data,0,dt->disc);

	free((Void_t*)dt);

	return 0;
}