skeletton untested project

libft/ft_hashmap/ft_hashmap_utils.c

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+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_hashmap_utils.c                                 :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: thrieg <thrieg@student.42mulhouse.fr>      +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2024/11/07 13:51:48 by thrieg            #+#    #+#             */
+/*   Updated: 2025/02/16 19:08:32 by thrieg           ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "ft_hashmap_private.h"
+
+void	ft_free_hash_element(t_hash_element *elem, t_hashmap *map)
+{
+	if (map->free_key)
+		map->free_key(elem->key);
+	if (map->free_value)
+		map->free_value(elem->value);
+	free(elem);
+}
+
+// Helper function to create a new hash element
+t_hash_element	*ft_create_hash_element(void *key, void *value, size_t hash)
+{
+	t_hash_element	*new_element;
+
+	new_element = malloc(sizeof(t_hash_element));
+	if (!new_element)
+		return (NULL);
+	new_element->key = key;
+	new_element->value = value;
+	new_element->hash = hash;
+	return (new_element);
+}
+
+//returns 0 for allocation fail without allocating or freeing anything
+int	ft_add_hashmap_element(size_t index, t_hashmap *map, t_hash_element *elem)
+{
+	t_list	*new_node;
+
+	new_node = malloc(sizeof(t_list));
+	if (!new_node)
+		return (0);
+	new_node->content = elem;
+	new_node->next = map->table[index];
+	map->table[index] = new_node;
+	map->nb_elems++;
+	return (1);
+}
+
+//returns 0 without doing anything if the allocation of the new table fails
+//in that case the old table is still valid!
+//returns 1 if the resize is a success
+int	ft_resize_hashmap(t_hashmap *map)
+{
+	size_t	new_size;
+	t_list	**new_table;
+
+	new_size = map->hashmap_size * HASHMAP_RESIZE_FACTOR;
+	new_table = ft_calloc(new_size, sizeof(t_list *));
+	if (!new_table)
+		return (0);
+	ft_copy_hashmap_table(new_table, map->table, new_size, map->hashmap_size);
+	free(map->table);
+	map->table = new_table;
+	map->hashmap_size = new_size;
+	return (1);
+}