Add error handling and create base for commands

1 files changed, 54 insertions, 0 deletions

diff --git a/stack_utils.c b/stack_utils.c
new file mode 100644
index 0000000..7a22b47
--- /dev/null
+++ b/stack_utils.c
@@ -0,0 +1,54 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   stack_utils.c                                      :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: dkaiser <dkaiser@student.42heilbronn.de    +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2024/04/12 20:31:30 by dkaiser           #+#    #+#             */
+/*   Updated: 2024/04/12 20:50:17 by dkaiser          ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "libft/libft.h"
+#include "push_swap.h"
+
+void	stack_swap(t_list **stack)
+{
+	t_list	*first_elem;
+
+	first_elem = *stack;
+	*stack = (*stack)->next;
+	first_elem->next = (*stack)->next;
+	(*stack)->next = first_elem;
+}
+
+void	stack_push(t_list **dst_stack, t_list **src_stack)
+{
+	t_list	*elem;
+
+	elem = *src_stack;
+	*src_stack = elem->next;
+	ft_lstadd_front(dst_stack, elem);
+}
+
+void	stack_rotate(t_list **stack)
+{
+	t_list	*first_elem;
+
+	first_elem = *stack;
+	*stack = (*stack)->next;
+	first_elem->next = NULL;
+	ft_lstlast(*stack)->next = first_elem;
+}
+
+void	stack_rrotate(t_list **stack)
+{
+    t_list *first_elem;
+
+    first_elem = *stack;
+    while((*stack)->next->next)
+        *stack = (*stack)->next;
+    (*stack)->next->next = first_elem;
+    (*stack)->next = NULL;
+}