libSystem
/* $Id$ */
/* Copyright (c) 2014-2021 Pierre Pronchery <khorben@defora.org> */
/* This file is part of DeforaOS System libSystem */
/* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
* IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
* PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
* TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */
#include <stddef.h>
#include "System/error.h"
#include "System/hash.h"
#include "System/mutator.h"
#include "System/object.h"
/* Mutator */
/* public */
/* functions */
/* mutator_new */
Mutator * mutator_new(void)
{
return hash_new(hash_func_string, hash_compare_string);
}
/* mutator_new_copy */
Mutator * mutator_new_copy(Mutator const * from)
{
return hash_new_copy(from);
}
/* mutator_delete */
void mutator_delete(Mutator * mutator)
{
mutator_reset(mutator);
hash_delete(mutator);
}
/* accessors */
/* mutator_count */
size_t mutator_count(Mutator const * mutator)
{
return hash_count(mutator);
}
/* mutator_get */
void * mutator_get(Mutator const * mutator, String const * key)
{
void * ret;
if((ret = hash_get(mutator, key)) == NULL)
error_set("%s: %s", key, "Key not found");
return ret;
}
/* mutator_set */
int mutator_set(Mutator * mutator, String const * key, void * value)
{
int ret;
String * k;
String * oldk;
/* look for the former key */
if((oldk = (String *)hash_get_key(mutator, key)) == NULL)
{
if(value == NULL)
/* there is nothing to do */
return 0;
/* allocate the new key */
if((k = string_new(key)) == NULL)
return -1;
key = k;
}
else
{
if(value != NULL)
oldk = NULL;
k = NULL;
}
if((ret = hash_set(mutator, key, value)) != 0)
{
error_set("%s: %s", key, "Could not set the value");
string_delete(k);
}
else
/* free the former key if removed */
string_delete(oldk);
return ret;
}
/* useful */
void mutator_foreach(Mutator const * mutator, MutatorForeach func, void * data)
{
hash_foreach(mutator, (HashForeach)func, data);
}
/* mutator_reset */
static void _reset_foreach(Mutator const * mutator, String const * key,
void * value, void * data);
int mutator_reset(Mutator * mutator)
{
/* free the keys */
mutator_foreach(mutator, _reset_foreach, NULL);
return hash_reset(mutator);
}
static void _reset_foreach(Mutator const * mutator, String const * key,
void * value, void * data)
{
String * k = (String *)key;
(void) mutator;
(void) value;
(void) data;
string_delete(k);
}