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/* $Id: flatten.c,v 1.5 2004/12/11 19:26:04 ellson Exp $ $Revision: 1.5 $ */
/* vim:set shiftwidth=4 ts=8: */
/**********************************************************
* This software is part of the graphviz package *
* http://www.graphviz.org/ *
* *
* Copyright (c) 1994-2004 AT&T Corp. *
* and is licensed under the *
* Common Public License, Version 1.0 *
* by AT&T Corp. *
* *
* Information and Software Systems Research *
* AT&T Research, Florham Park NJ *
**********************************************************/
#include <aghdr.h>
#ifdef DMALLOC
#include "dmalloc.h"
#endif
void agflatten_elist(Dict_t * d, Dtlink_t ** lptr)
{
dtrestore(d, *lptr);
(void) dtflatten(d);
*lptr = dtextract(d);
}
void agflatten_edges(Agraph_t * g, Agnode_t * n)
{
agflatten_elist(g->e_seq, (Dtlink_t **) & (n->out));
agflatten_elist(g->e_seq, (Dtlink_t **) & (n->in));
}
void agflatten(Agraph_t * g, int flag)
{
Agnode_t *n;
if (flag) {
if (g->desc.flatlock == FALSE) {
dtflatten(g->n_seq);
g->desc.flatlock = TRUE;
for (n = agfstnode(g); n; n = agnxtnode(n))
agflatten_edges(g, n);
}
} else {
if (g->desc.flatlock) {
g->desc.flatlock = FALSE;
}
}
}
void agnotflat(Agraph_t * g)
{
if (g->desc.flatlock)
agerror(AGERROR_FLAT, "");
}
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