/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   ms_env.c                                           :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: tmaze <tmaze@student.42.fr>                +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2019/09/20 11:43:53 by tmaze             #+#    #+#             */
/*   Updated: 2019/09/26 16:48:37 by tmaze            ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */

#include "minishell.h"

void	lstdelelem(t_env **elem)
{
	if (elem)
	{
		ft_strdel(&((*elem)->key));
		ft_strdel(&((*elem)->val));
		ft_memdel((void**)elem);
	}
}

void	lstdel(t_env **env)
{
	t_env *tmp;

	while (*env)
	{
		tmp = *env;
		*env = (*env)->next;
		lstdelelem(&tmp);
	}
}

t_env	*lstnew(char *env)
{
	t_env	*ret;
	int		i;

	i = 0;
	ret = NULL;
	while (env[i] && env[i] != '=')
		i++;
	if (env[i] == '=' && (ret = (t_env*)ft_memalloc(sizeof(t_env))) != NULL)
		if ((ret->val = ft_strsub(env, i + 1, ft_strlen(env) - i - 1)) == NULL
			|| (ret->key = ft_strsub(env, 0, i)) == NULL)
			lstdelelem(&ret);
	return (ret);
}

t_env	*lstaddend(t_env **alst, t_env *new)
{
	t_env *tmp;

	if (new == NULL)
		return (NULL);
	if (*alst == NULL)
		*alst = new;
	else
	{
		tmp = *alst;
		while (tmp->next)
			tmp = tmp->next;
		tmp->next = new;
	}
	return (*alst);
}