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/* MIT License
*
* Copyright (c) 2024 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_private.h"
#include "ares_htable.h"
#include "ares_htable_vpstr.h"
struct ares_htable_vpstr {
ares_htable_t *hash;
};
typedef struct {
void *key;
char *val;
ares_htable_vpstr_t *parent;
} ares_htable_vpstr_bucket_t;
void ares_htable_vpstr_destroy(ares_htable_vpstr_t *htable)
{
if (htable == NULL) {
return; /* LCOV_EXCL_LINE: DefensiveCoding */
}
ares_htable_destroy(htable->hash);
ares_free(htable);
}
static unsigned int hash_func(const void *key, unsigned int seed)
{
return ares_htable_hash_FNV1a((const unsigned char *)&key, sizeof(key), seed);
}
static const void *bucket_key(const void *bucket)
{
const ares_htable_vpstr_bucket_t *arg = bucket;
return arg->key;
}
static void bucket_free(void *bucket)
{
ares_htable_vpstr_bucket_t *arg = bucket;
ares_free(arg->val);
ares_free(arg);
}
static ares_bool_t key_eq(const void *key1, const void *key2)
{
if (key1 == key2) {
return ARES_TRUE;
}
return ARES_FALSE;
}
ares_htable_vpstr_t *ares_htable_vpstr_create(void)
{
ares_htable_vpstr_t *htable = ares_malloc(sizeof(*htable));
if (htable == NULL) {
goto fail; /* LCOV_EXCL_LINE: OutOfMemory */
}
htable->hash = ares_htable_create(hash_func, bucket_key, bucket_free, key_eq);
if (htable->hash == NULL) {
goto fail; /* LCOV_EXCL_LINE: OutOfMemory */
}
return htable;
/* LCOV_EXCL_START: OutOfMemory */
fail:
if (htable) {
ares_htable_destroy(htable->hash);
ares_free(htable);
}
return NULL;
/* LCOV_EXCL_STOP */
}
ares_bool_t ares_htable_vpstr_insert(ares_htable_vpstr_t *htable, void *key,
const char *val)
{
ares_htable_vpstr_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 = ares_strdup(val);
if (bucket->val == NULL) {
goto fail;
}
if (!ares_htable_insert(htable->hash, bucket)) {
goto fail;
}
return ARES_TRUE;
fail:
if (bucket) {
ares_free(bucket->val);
ares_free(bucket);
}
return ARES_FALSE;
}
ares_bool_t ares_htable_vpstr_get(const ares_htable_vpstr_t *htable,
const void *key, const char **val)
{
const ares_htable_vpstr_bucket_t *bucket = NULL;
if (val) {
*val = NULL;
}
if (htable == NULL) {
return ARES_FALSE;
}
bucket = ares_htable_get(htable->hash, key);
if (bucket == NULL) {
return ARES_FALSE;
}
if (val) {
*val = bucket->val;
}
return ARES_TRUE;
}
const char *ares_htable_vpstr_get_direct(const ares_htable_vpstr_t *htable,
const void *key)
{
const char *val = NULL;
ares_htable_vpstr_get(htable, key, &val);
return val;
}
ares_bool_t ares_htable_vpstr_remove(ares_htable_vpstr_t *htable,
const void *key)
{
if (htable == NULL) {
return ARES_FALSE;
}
return ares_htable_remove(htable->hash, key);
}
size_t ares_htable_vpstr_num_keys(const ares_htable_vpstr_t *htable)
{
if (htable == NULL) {
return 0;
}
return ares_htable_num_keys(htable->hash);
}
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