1 files changed, 73 insertions, 0 deletions
diff --git a/src/b_cd.c b/src/b_cd.c
new file mode 100644
index 0000000..bcc8475
--- /dev/null
+++ b/src/b_cd.c
@@ -0,0 +1,73 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   b_cd.c                                             :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: rbousset <marvin@42.fr>                    +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2020/02/14 17:19:27 by rbousset          #+#    #+#             */
+/*   Updated: 2020/02/14 17:19:29 by rbousset         ###   ########lyon.fr   */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include <libft.h>
+#include <stdint.h>
+#include <unistd.h>
+
+#include "f_fail.h"
+#include "s_destroy.h"
+#include "s_struct.h"
+#include "u_utils.h"
+#include "u_vars.h"
+
+static void
+	set_path(char **path,
+				char *args[],
+				t_msh *msh)
+{
+	if (!(*path = ft_strdup(*args)))
+	{
+		s_destroy(msh);
+		fail_alloc(msh);
+	}
+	if (!ft_strncmp("~/", *path, 2) || !ft_strncmp("~", *path, 2))
+	{
+		if (!(*path = ft_strsubst(*path,
+			"~", subst_var_value("$HOME", msh))))
+		{
+			s_destroy(msh);
+			fail_alloc(msh);
+		}
+	}
+}
+
+uint8_t
+	b_cd(char *args[],
+			t_msh *msh)
+{
+	const uint64_t	argc = get_argc((const char**)args);
+	char			*path;
+
+	if (argc >= 2)
+	{
+		fail_too_many_args("cd", msh);
+		return (1);
+	}
+	else if (argc == 0)
+	{
+		if (!(path = subst_var_value("$HOME", msh)))
+			return (1);
+	}
+	else
+		set_path(&path, args, msh);
+	if (chdir(path) != 0)
+	{
+		fail_chd("cd", path, msh);
+		ft_memdel((void*)&path);
+		return (1);
+	}
+	ft_memdel((void*)&msh->cwd);
+	msh->cwd = getcwd(NULL, 0);
+	ft_memdel((void*)&path);
+	return (0);
+}