WIP added basic cd command

The command only works with `-`, absolut paths and empty arg
No option has been added

includes/minishell.h

@@ -6,7 +6,7 @@
 /*   By: tmaze <tmaze@student.42.fr>                +#+  +:+       +#+        */
 /*                                                +#+#+#+#+#+   +#+           */
 /*   Created: 2018/11/18 13:12:34 by tmaze             #+#    #+#             */
-/*   Updated: 2019/01/15 15:09:58 by tmaze            ###   ########.fr       */
+/*   Updated: 2019/01/21 13:14:47 by tmaze            ###   ########.fr       */
 /*                                                                            */
 /* ************************************************************************** */
 
@@ -43,4 +43,8 @@ int				cmd_env(char **argv, t_list **env);
 int				cmd_setenv(char **argv, t_list **env);
 int				cmd_unsetenv(char **argv, t_list **env);
 
+int		ft_isin(char *str, char c);
+char	*check_path_slash(char *exec);
+char	*check_path_dot(char *exec, t_list *env);
+
 #endif

srcs/cmd_cd.c

@@ -6,15 +6,87 @@
 /*   By: tmaze <tmaze@student.42.fr>                +#+  +:+       +#+        */
 /*                                                +#+#+#+#+#+   +#+           */
 /*   Created: 2019/01/07 16:44:40 by tmaze             #+#    #+#             */
-/*   Updated: 2019/01/16 13:46:47 by tmaze            ###   ########.fr       */
+/*   Updated: 2019/01/21 17:06:19 by tmaze            ###   ########.fr       */
 /*                                                                            */
 /* ************************************************************************** */
 
 #include "minishell.h"
 
-int	cmd_cd(char **argv, t_list **env)
+void	put_error_cd(char *file, char *msg)
 {
-	(void)argv;
+	ft_putstr("cd: ");
-	(void)env;
+	ft_putstr(file);
+	ft_putstr(": ");
+	ft_putendl(msg);
+}
+
+char	*check_path_slash_cd(char *exec)
+{
+	int			i;
+	struct stat	info;
+
+	if (ft_isin(exec, '/') != -1 && ft_isin(exec, '.') == -1)
+	{
+		if ((i = access(exec, F_OK)) != 0)
+			put_error_cd(exec, "no such file or directory");
+		if (i != 0)
+			return (NULL);
+		if ((i = stat(exec, &info)) != 0)
+			put_error_cd(exec, "can't determine info");
+		if (i != 0)
+			return (NULL);
+		if (!S_ISDIR(info.st_mode))
+		{
+			put_error_cd(exec, "not a directory");
+			return (NULL);
+		}
+		if ((i = access(exec, X_OK)) != 0)
+			put_error_cd(exec, "permission denied");
+		if (i != 0)
+			return (NULL);
+		return (exec);
+	}
+	return (NULL);
+}
+
+int		cmd_cd_core(char *path, t_list **env)
+{
+	t_envelem	*pwd;
+	char		*oldpwd;
+	
+	if (check_path_slash_cd(path) == NULL)
+		return (1);
+	if (chdir(path) == -1
+		|| (pwd = env_getelemfromkey("PWD", *env)) == NULL)
+	{
+		put_error_cd(path, "error");
+		return (1);
+	}
+	if ((oldpwd = ft_strdup(pwd->val)) == NULL)
+	{
+		put_error_cd(path, "error");
+		return (1);
+	}
+	if (env_addupdate("PWD", path, env) == NULL
+		|| env_addupdate("OLDPWD", oldpwd, env) == NULL)
+	{
+		put_error_cd(path, "error");
+		ft_strdel(&oldpwd);
+		return (1);
+	}
+	ft_strdel(&oldpwd);
+	return (0);
+}
+
+int		cmd_cd(char **argv, t_list **env)
+{
+	t_envelem	*elem;
+
+	if (!argv[1] && (elem = env_getelemfromkey("HOME", *env))->val != NULL)
+		return (cmd_cd_core(elem->val, env));
+	else if (argv[1] && argv[1][0] == '/')
+		return (cmd_cd_core(argv[1], env));
+	else if (argv[1] && argv[1][0] == '-' && (elem = env_getelemfromkey("OLDPWD", *env)) != NULL)
+		return (cmd_cd_core(elem->val, env));
 	return (0);
 }

srcs/exec.c

@@ -6,7 +6,7 @@
 /*   By: tmaze <tmaze@student.42.fr>                +#+  +:+       +#+        */
 /*                                                +#+#+#+#+#+   +#+           */
 /*   Created: 2018/11/27 15:32:29 by tmaze             #+#    #+#             */
-/*   Updated: 2019/01/17 17:43:00 by tmaze            ###   ########.fr       */
+/*   Updated: 2019/01/21 13:21:04 by tmaze            ###   ########.fr       */
 /*                                                                            */
 /* ************************************************************************** */
 
@@ -175,6 +175,8 @@ char	*check_path(char *exec, t_list *env)
 		ft_strdel(&ret);
 		i++;
 	}
+	if (path_elems[i] == NULL)
+		put_error(exec, "command not found");
 	ft_del_words_tables(&path_elems);
 	return (ret);
 }
@@ -202,14 +204,14 @@ int		exec_cmd(char **argv, t_list **env)
 	if ((ret = fork()) == 0)
 	{
 		execve(path, argv, env_tab);
-		ft_putendl_fd("minishell: error", 2);
+		ft_putendl_fd("minishell: error", 1);
 		if (ft_strcmp(path, argv[0]) != 0)
 			ft_strdel(&path);
 		ft_del_words_tables(&env_tab);
 		exit(-1);
 	}
 	else if (ret == -1)
-		ft_putendl_fd("minishell: error", 2);
+		ft_putendl_fd("minishell: error", 1);
 	if (ret == -1)
 		return (-1);
 	waitpid(ret, NULL, 0);