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/*
* Copyright (C) 2000, Matias Atria
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "mdvi.h"
#include "assoc.h"
#include "hash.h"
typedef struct {
void *data;
DviFree2Func free_func;
} DviAssoc;
#define MDVI_ASSOC_SIZE 31
static void assoc_free(DviHashKey key, void *ptr)
{
DviAssoc *assoc = (DviAssoc *)ptr;
DEBUG((4, "Destroying association `%s'\n", (char *)key));
if(assoc->free_func)
assoc->free_func(key, assoc->data);
xfree(assoc);
}
int mdvi_assoc_put(DviContext *dvi, char *key, void *data, DviFree2Func f)
{
DviAssoc *assoc;
int ok;
if(dvi->assoc.buckets == NULL) {
mdvi_hash_create(&dvi->assoc, MDVI_ASSOC_SIZE);
dvi->assoc.hash_free = assoc_free;
}
assoc = xalloc(DviAssoc);
assoc->data = data;
assoc->free_func = f;
ok = mdvi_hash_add(&dvi->assoc, MDVI_KEY(key),
assoc, MDVI_HASH_UNIQUE);
if(ok < 0) {
xfree(assoc);
return -1;
}
return 0;
}
void *mdvi_assoc_get(DviContext *dvi, char *key)
{
DviAssoc *assoc;
if(dvi->assoc.buckets == NULL)
return NULL;
assoc = (DviAssoc *)mdvi_hash_lookup(&dvi->assoc, MDVI_KEY(key));
return assoc ? assoc->data : NULL;
}
void *mdvi_assoc_del(DviContext *dvi, char *key)
{
DviAssoc *assoc;
void *ptr;
if(dvi->assoc.buckets == NULL)
return NULL;
assoc = mdvi_hash_remove(&dvi->assoc, MDVI_KEY(key));
if(assoc == NULL)
return NULL;
ptr = assoc->data;
xfree(assoc);
return ptr;
}
void mdvi_assoc_free(DviContext *dvi, char *key)
{
if(dvi->assoc.buckets) {
/* this will call `assoc_free' */
mdvi_hash_destroy_key(&dvi->assoc, MDVI_KEY(key));
}
}
void mdvi_assoc_flush(DviContext *dvi)
{
if(dvi->assoc.buckets)
mdvi_hash_reset(&dvi->assoc, 0);
}
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