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/* MIT License
*
* Copyright (c) 2023 Brad House
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the next
* paragraph) shall be included in all copies or substantial portions of the
* Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*
* SPDX-License-Identifier: MIT
*/
#include "ares_setup.h"
#include "ares.h"
#include "ares_private.h"
#include "ares__htable.h"
#include "ares__htable_stvp.h"
struct ares__htable_stvp {
ares__htable_stvp_val_free_t free_val;
ares__htable_t *hash;
};
typedef struct {
size_t key;
void *val;
ares__htable_stvp_t *parent;
} ares__htable_stvp_bucket_t;
void ares__htable_stvp_destroy(ares__htable_stvp_t *htable)
{
if (htable == NULL)
return;
ares__htable_destroy(htable->hash);
ares_free(htable);
}
static unsigned int hash_func(const void *key, unsigned int seed)
{
const size_t *arg = key;
return ares__htable_hash_FNV1a((const unsigned char *)arg, sizeof(*arg),
seed);
}
static const void *bucket_key(const void *bucket)
{
const ares__htable_stvp_bucket_t *arg = bucket;
return &arg->key;
}
static void bucket_free(void *bucket)
{
ares__htable_stvp_bucket_t *arg = bucket;
if (arg->parent->free_val)
arg->parent->free_val(arg->val);
ares_free(arg);
}
static unsigned int key_eq(const void *key1, const void *key2)
{
const size_t *k1 = key1;
const size_t *k2 = key2;
if (*k1 == *k2)
return 1;
return 0;
}
ares__htable_stvp_t *ares__htable_stvp_create(
ares__htable_stvp_val_free_t val_free)
{
ares__htable_stvp_t *htable = ares_malloc(sizeof(*htable));
if (htable == NULL)
goto fail;
htable->hash = ares__htable_create(hash_func,
bucket_key,
bucket_free,
key_eq);
if (htable->hash == NULL)
goto fail;
htable->free_val = val_free;
return htable;
fail:
if (htable) {
ares__htable_destroy(htable->hash);
ares_free(htable);
}
return NULL;
}
unsigned int ares__htable_stvp_insert(ares__htable_stvp_t *htable, size_t key,
void *val)
{
ares__htable_stvp_bucket_t *bucket = NULL;
if (htable == NULL)
goto fail;
bucket = ares_malloc(sizeof(*bucket));
if (bucket == NULL)
goto fail;
bucket->parent = htable;
bucket->key = key;
bucket->val = val;
if (!ares__htable_insert(htable->hash, bucket))
goto fail;
return 1;
fail:
if (bucket) {
ares_free(bucket);
}
return 0;
}
unsigned int ares__htable_stvp_get(ares__htable_stvp_t *htable, size_t key,
void **val)
{
ares__htable_stvp_bucket_t *bucket = NULL;
if (val)
*val = NULL;
if (htable == NULL)
return 0;
bucket = ares__htable_get(htable->hash, &key);
if (bucket == NULL)
return 0;
if (val)
*val = bucket->val;
return 1;
}
void *ares__htable_stvp_get_direct(ares__htable_stvp_t *htable, size_t key)
{
void *val = NULL;
ares__htable_stvp_get(htable, key, &val);
return val;
}
unsigned int ares__htable_stvp_remove(ares__htable_stvp_t *htable, size_t key)
{
if (htable == NULL)
return 0;
return ares__htable_remove(htable->hash, &key);
}
size_t ares__htable_stvp_num_keys(ares__htable_stvp_t *htable)
{
if (htable == NULL)
return 0;
return ares__htable_num_keys(htable->hash);
}
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