c-preprocessor/str_dyn_arr.c

/* SPDX-License-Identifier: BSD-2 */

#include "str_dyn_arr.h"
#include <errno.h>
#include <stdlib.h>

struct str_dyn_arr *init_str_dyn_arr(int size)
{
	struct str_dyn_arr *a;

	a = NULL;

	a = calloc(1, sizeof(struct str_dyn_arr));
	if (!a)
		goto free_and_exit;

	a->data = calloc(size, sizeof(char *));
	if (!(a->data))
		goto free_and_exit;

	a->used = 0;
	a->size = size;

	return a;

free_and_exit:
	if (a)
		free(a->data);
	free(a);

	return NULL;
}

int insert_str_dyn_arr(struct str_dyn_arr *a, char *e)
{
	if (a->used == a->size) {
		a->size *= 2;
		a->data = realloc(a->data, a->size * sizeof(char *));
		if (!(a->data))
			goto free_and_exit;
	}

	a->data[a->used++] = e;

	return CHAR_DYN_ARR_OK;

free_and_exit:
	free(a);
	free(a->data);

	return CHAR_DYN_ARR_FAILED;
}

extern void free_str_dyn_arr(struct str_dyn_arr *a)
{
	int i;

	if (!a)
		return;

	if (a->data) {
		for (i = 0; i < a->used; i++)
			free(a->data[i]);
	}

	free(a->data);
	free(a);
}