42_minishell/env/env1.c

/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   env.c                                              :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: erey-bet <marvin@42.fr>                    +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2023/02/02 14:39:56 by erey-bet          #+#    #+#             */
/*   Updated: 2023/03/09 19:01:05 by erey-bet         ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */

#include "env_private.h"

void	add_sort(t_list **head, t_env *var)
{
	t_list	*current;
	t_env	*last;

	current = *head;
	while (current->next != NULL
		&& ft_strcmp(var->key, ((t_env *)(current->content))->key) > 0)
		current = current->next;
	if (current->content == NULL)
		current->content = var;
	else
	{
		last = NULL;
		swap_env_3((void **)&last, &current->content, (void **)&var);
		while (current->next != NULL)
		{
			current = current->next;
			swap_env(&current->content, (void **)&last);
		}
	}
	if (current->next == NULL)
		current->next = ft_calloc(1, sizeof(t_list));
}

char	*get_value_by_key(char *key, t_list **head)
{
	t_list	*current;

	current = *head;
	while (current->next != NULL)
	{
		if (ft_strcmp(((t_env *)current->content)->key, key) == 0)
			return (((t_env *)current->content)->value);
		current = current->next;
	}
	return (NULL);
}

int	set_value_by_key(char *key, char *value, t_list **head)
{
	t_list	*current;

	current = *head;
	while (current->next != NULL)
	{
		if (ft_strcmp(((t_env *)current->content)->key, key) == 0)
		{
			free(((t_env *)current->content)->value);
			((t_env *)current->content)->value = value;
			return (0);
		}
		current = current->next;
	}
	return (1);
}

int	create_value_by_key(char *key, char *value, t_list **head)
{
	t_env	*content;

	if (set_value_by_key(key, value, head) == 0)
		return (0);
	content = ft_calloc(1, sizeof(t_env));
	if (content == NULL)
		return (1);
	content->key = key;
	content->value = value;
	content->original = 0;
	add_sort(head, content);
	return (0);
}

t_list	**init_env(char **env)
{
	t_list	**head;
	int		i;
	t_env	*var;

	head = ft_calloc(1, sizeof(t_list *));
	if (head == NULL)
		return (NULL);
	*head = ft_calloc(1, sizeof(t_list));
	if (*head == NULL)
		return (NULL);
	i = -1;
	while (env[++i])
	{
		var = ft_calloc(1, sizeof(t_env));
		if (var == NULL)
			return (NULL);
		var->key = get_key(env[i]);
		var->value = get_value(env[i]);
		var->original = 1;
		add_sort(head, var);
	}
	return (head);
}