/*
 *  This file is part of uIRCd. (https://git.redxen.eu/caskd/uIRCd)
 *  Copyright (c) 2019, 2020 Alex-David Denes
 *
 *  uIRCd 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 3 of the License, or
 *  any later version.
 *
 *  uIRCd 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 uIRCd.  If not, see <https://www.gnu.org/licenses/>.
 */

#include "memory.h"

#include "logging.h"

#include <stdbool.h> // bool
#include <stdio.h>   // fprintf()
#include <stdlib.h>  // malloc() free()
#include <string.h>  // strcpy()

/* Description:
 * This is a allocation manager that frees or allocates variables to pointers depending on the context.
 * If the pointer is already allocated it will free it and replace it with var
 * If var is NULL then the pointer is assigned NULL and left "undefined"
 * If it isn't NULL, the string var is copied to a allocated block stored in *ptr
 * NOTE: This could be expanded to have uses outside of strings but that's not required (yet)
 */
int
allocate_copy(char** ptr, const char* const var)
{
	if (var == NULL) LOG(LOG_DEBUG, "%s.", "Freeing pointer because provided variable has the address of NULL");
	if (*ptr != NULL) LOG(LOG_DEBUG, "%s.", "Deallocating already allocated pointer for replacement");
	free(*ptr);
	*ptr = NULL;
	if (var == NULL) return 1;
	if ((*ptr = (char*) malloc(sizeof(char) * (strlen(var) + 1))) != NULL) {
		strcpy(*ptr, var);
		return 1;
	}
	return 0;
}