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/* $Id: imap.c,v 1.3 2009/06/03 01:10:51 ellson Exp $ $Revision: 1.3 $ */
/* 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 <cghdr.h>
typedef struct IMapEntry_s {
Dtlink_t namedict_link;
Dtlink_t iddict_link;
unsigned long id;
char *str;
} IMapEntry_t;
static int idcmpf(Dict_t * d, void *arg_p0, void *arg_p1, Dtdisc_t * disc)
{
IMapEntry_t *p0, *p1;
NOTUSED(d);
p0 = arg_p0;
p1 = arg_p1;
NOTUSED(disc);
return (p0->id - p1->id);
}
/* note, OK to compare pointers into shared string pool
* but can't probe with an arbitrary string pointer
*/
static int namecmpf(Dict_t * d, void *arg_p0, void *arg_p1,
Dtdisc_t * disc)
{
IMapEntry_t *p0, *p1;
NOTUSED(d);
p0 = arg_p0;
p1 = arg_p1;
NOTUSED(disc);
return (p0->str - p1->str);
}
static Dtdisc_t LookupByName = {
0, /* object ptr is passed as key */
0, /* size (ignored) */
offsetof(IMapEntry_t, namedict_link),
NIL(Dtmake_f),
NIL(Dtfree_f),
namecmpf,
NIL(Dthash_f),
agdictobjmem,
NIL(Dtevent_f)
};
static Dtdisc_t LookupById = {
0, /* object ptr is passed as key */
0, /* size (ignored) */
offsetof(IMapEntry_t, iddict_link),
NIL(Dtmake_f),
NIL(Dtfree_f),
idcmpf,
NIL(Dthash_f),
agdictobjmem,
NIL(Dtevent_f)
};
int aginternalmaplookup(Agraph_t * g, int objtype, char *str,
unsigned long *result)
{
Dict_t *d;
IMapEntry_t *sym, template;
char *search_str;
if (objtype == AGINEDGE)
objtype = AGEDGE;
if ((d = g->clos->lookup_by_name[objtype])) {
if ((search_str = agstrbind(g, str))) {
template.str = search_str;
sym = (IMapEntry_t *) dtsearch(d, &template);
if (sym) {
*result = sym->id;
return TRUE;
}
}
}
return FALSE;
}
/* caller GUARANTEES that this is a new entry */
void aginternalmapinsert(Agraph_t * g, int objtype, char *str,
unsigned long id)
{
IMapEntry_t *ent;
Dict_t *d_name_to_id, *d_id_to_name;
ent = AGNEW(g, IMapEntry_t);
ent->id = id;
ent->str = agstrdup(g, str);
if (objtype == AGINEDGE)
objtype = AGEDGE;
if ((d_name_to_id = g->clos->lookup_by_name[objtype]) == NIL(Dict_t *))
d_name_to_id = g->clos->lookup_by_name[objtype] =
agdtopen(g, &LookupByName, Dttree);
if ((d_id_to_name = g->clos->lookup_by_id[objtype]) == NIL(Dict_t *))
d_id_to_name = g->clos->lookup_by_id[objtype] =
agdtopen(g, &LookupById, Dttree);
dtinsert(d_name_to_id, ent);
dtinsert(d_id_to_name, ent);
}
static IMapEntry_t *find_isym(Agraph_t * g, int objtype, unsigned long id)
{
Dict_t *d;
IMapEntry_t *isym, itemplate;
if (objtype == AGINEDGE)
objtype = AGEDGE;
if ((d = g->clos->lookup_by_id[objtype])) {
itemplate.id = id;
isym = (IMapEntry_t *) dtsearch(d, &itemplate);
} else
isym = NIL(IMapEntry_t *);
return isym;
}
char *aginternalmapprint(Agraph_t * g, int objtype, unsigned long id)
{
IMapEntry_t *isym;
if ((isym = find_isym(g, objtype, id)))
return isym->str;
return NILstr;
}
int aginternalmapdelete(Agraph_t * g, int objtype, unsigned long id)
{
IMapEntry_t *isym;
if (objtype == AGINEDGE)
objtype = AGEDGE;
if ((isym = find_isym(g, objtype, id))) {
dtdelete(g->clos->lookup_by_name[objtype], isym);
dtdelete(g->clos->lookup_by_id[objtype], isym);
agstrfree(g, isym->str);
agfree(g, isym);
return TRUE;
}
return FALSE;
}
void aginternalmapclearlocalnames(Agraph_t * g)
{
int i;
IMapEntry_t *sym, *nxt;
Dict_t **d_name;
/* Dict_t **d_id; */
Ag_G_global = g;
d_name = g->clos->lookup_by_name;
/* d_id = g->clos->lookup_by_id; */
for (i = 0; i < 3; i++) {
if (d_name[i]) {
for (sym = dtfirst(d_name[i]); sym; sym = nxt) {
nxt = dtnext(d_name[i], sym);
if (sym->str[0] == LOCALNAMEPREFIX)
aginternalmapdelete(g, i, sym->id);
}
}
}
}
static void closeit(Dict_t ** d)
{
int i;
for (i = 0; i < 3; i++) {
if (d[i]) {
dtclose(d[i]);
d[i] = NIL(Dict_t *);
}
}
}
void aginternalmapclose(Agraph_t * g)
{
Ag_G_global = g;
closeit(g->clos->lookup_by_name);
closeit(g->clos->lookup_by_id);
}
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