Minishell/srcs/built_in/cd.c

/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   cd.c                                               :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: apommier <apommier@student.42.fr>          +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2022/03/21 18:30:26 by sadjigui          #+#    #+#             */
/*   Updated: 2022/04/17 10:05:05 by apommier         ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */

#include "../../includes/minishell.h"

void	del_one(t_s_cmd *cmd)
{
	int	i;
	int	j;
	char *r;

	if (find_it(cmd->big_cmd->env, "PWD") != -1)
	{
		j = find_it(cmd->big_cmd->env, "PWD");
		i = ft_strlen(cmd->big_cmd->env[j]);
		while (cmd->big_cmd->env[j][i] && cmd->big_cmd->env[j][i] != '/')
			i--;
		r = ft_substr(cmd->big_cmd->env[j], 0, i);
		free (cmd->big_cmd->env[j]);
		if (r)
			cmd->big_cmd->env[j] = ft_strdup(r);
		else
			cmd->big_cmd->env[j] = ft_strdup("PWD=/");

	if (r)
		free(r);
	}
}

void	add_one(t_s_cmd *cmd)
{
	// char *r;
	// char *s;

	// s = ft_strjoin(cmd->big_cmd->env[find_it(cmd->big_cmd->env, "PWD")], "/");
	// r = ft_strjoin(s, str);
	// // free(cmd->big_cmd->env[find_it(cmd->big_cmd->env, "PWD")]);
	// cmd->big_cmd->env[find_it(cmd->big_cmd->env, "PWD")] = ft_strdup(r);
	// free(r);
	// free(s);
	char p[1024];
	char *str;
	int i;

	i = find_it(cmd->big_cmd->env, "PWD");
	str = getcwd(p, sizeof(p));
	free(cmd->big_cmd->env[i]);
	cmd->big_cmd->env[i] = ft_strjoin("PWD=", p);
}

void	change_path(t_s_cmd *cmd)
{
	// char **tab;
	int old;
	int pwd;

	// tab = ft_split(cmd->args[1], '/');
	if (find_it(cmd->big_cmd->env, "OLDPWD") != -1)
	{
		pwd = find_it(cmd->big_cmd->env, "PWD");
		old = find_it(cmd->big_cmd->env, "OLDPWD");
		free(cmd->big_cmd->env[old]);
		cmd->big_cmd->env[old] = ft_strjoin("OLD", cmd->big_cmd->env[pwd]);
		// old = 0;
		// while (tab[old])
		// {
		// 	if (ft_strcmp(tab[old], "..") == 0)
		// 		del_one(cmd);
		// 	else
		// 	old++;
		// }
	}
	add_one(cmd);


	// if (tab)
	// 	free_double(tab);
}

void	reboot_pwd(t_s_cmd *cmd, int i)
{
	char	*str;

	while (i > 3)
	{
		if (chdir("..") == 0)
			del_one(cmd);
		i--;
	}
	str = ft_substr(cmd->args[1], 2, ft_strlen(cmd->args[1]));
	cmd->args[1] = ft_strdup(str);
	free(str);
}

void	check_home(t_s_cmd *cmd, char *p)
{
	int home;
	int len_home;
	int old_pwd;
	int pwd;

	home = find_it(cmd->big_cmd->env, "HOME");
	len_home = ft_strlen(cmd->big_cmd->env[home]);
	old_pwd = find_it(cmd->big_cmd->env, "OLDPWD");
	pwd = find_it(cmd->big_cmd->env, "PWD");

	p = ft_substr(cmd->big_cmd->env[home], 5, ft_strlen(cmd->big_cmd->env[len_home]));
	if (chdir(p) == 0)
		if (find_it(cmd->big_cmd->env, "PWD") != -1)
		{
			if (find_it(cmd->big_cmd->env, "OLDPWD") != -1)
				cmd->big_cmd->env[old_pwd] = ft_strjoin("OLD", cmd->big_cmd->env[pwd]);
			cmd->big_cmd->env[pwd] = ft_strjoin("PWD=", p);
		}
	free(p);
}

int	open_directory(t_s_cmd *cmd)
{
	char *p;
	int j;

	p = NULL;
	if (find_it(cmd->big_cmd->env, "PWD") != -1)
		j = size_path(cmd->big_cmd->env);
	if (cmd->nb_args > 2)
	{
		// ft_putstr_fd("Minishell: cd: too many arguments\n", 2);
		// return ;
		return (cd_error(cmd, "Minishell: cd: too many arguments", 1));
	}
	if (!cmd->args[1])
	{
		if (find_it(cmd->big_cmd->env, "HOME") < 0)
		{
			// ft_putstr_fd("Minishell: cd: HOME not set\n", 2);
			// return ;
			return (cd_error(cmd, "Minishell: cd: HOME not set", 1));
		}
		check_home(cmd, p);
	}
	if (tab_len(cmd->args) == 2)
	{
		if (cmd->args[1][0] == '~')
			reboot_pwd(cmd, j);
		if (chdir(cmd->args[1]) == 0)
		{
			if (find_it(cmd->big_cmd->env, "PWD") != -1)
				change_path(cmd);
		}
		else
		{
			return (msg_error(cmd, "Minishell: cd: ", cmd->args[1], ": No such directory\n", 1));
			// ft_putstr_fd("Minishell: cd: ", 2);
			// ft_putstr_fd(cmd->args[1], 2);
			// ft_putstr_fd(": No such directory\n", 2);
			// return ;//(1);
		}
	}
	return (check_return(cmd, 0));
}