From: Dominik Kaiser <dkaiser@1-C-7.42heilbronn.de>
Date: Wed, 8 May 2024 11:14:19 +0000 (+0200)
Subject: Add libft as dir
X-Git-Url: https://git.dkaiser.de/?a=commitdiff_plain;h=refs%2Fheads%2Fmaster;p=42%2Fpipex.git

Add libft as dir
---

diff --git a/libft/Makefile b/libft/Makefile
new file mode 100644
index 0000000..bb4d8c1
--- /dev/null
+++ b/libft/Makefile
@@ -0,0 +1,76 @@
+NAME=libft.a
+CC=cc
+CFLAGS=-Wall -Wextra -Werror
+
+SRC_FILES = ft_atoi.c \
+			ft_bzero.c \
+			ft_calloc.c \
+			ft_isalnum.c \
+			ft_isalpha.c \
+			ft_isascii.c \
+			ft_isdigit.c \
+			ft_isprint.c \
+			ft_itoa.c \
+			ft_memchr.c \
+			ft_memcmp.c \
+			ft_memcpy.c \
+			ft_memmove.c \
+			ft_memset.c \
+			ft_putchar_fd.c \
+			ft_putendl_fd.c \
+			ft_putnbr_fd.c \
+			ft_putstr_fd.c \
+			ft_split.c \
+			ft_strchr.c \
+			ft_strdup.c \
+			ft_striteri.c \
+			ft_strjoin.c \
+			ft_strlcat.c \
+			ft_strlcpy.c \
+			ft_strlen.c \
+			ft_strmapi.c \
+			ft_strncmp.c \
+			ft_strnstr.c \
+			ft_strrchr.c \
+			ft_strtrim.c \
+			ft_substr.c \
+			ft_tolower.c \
+			ft_toupper.c \
+			ft_printf.c \
+			ft_printnbr.c \
+			ft_printhex.c \
+			ft_printaddr.c \
+			get_next_line.c \
+			get_next_line_utils.c \
+			ft_atol.c \
+			ft_lstnew_bonus.c \
+			ft_lstadd_front_bonus.c \
+			ft_lstsize_bonus.c \
+			ft_lstlast_bonus.c \
+			ft_lstadd_back_bonus.c \
+			ft_lstdelone_bonus.c \
+			ft_lstclear_bonus.c \
+			ft_lstiter_bonus.c \
+			ft_lstmap_bonus.c
+
+OBJ_FILES = $(SRC_FILES:.c=.o)
+
+all: $(NAME)
+	@:
+
+$(NAME): $(OBJ_FILES)
+	@ar rcs $(NAME) $(OBJ_FILES)
+	@echo "[$(NAME)] Created archive."
+
+%.o:%.c
+	@$(CC) $(CFLAGS) -c -o $@ $<
+	@echo "[$(NAME)] Compiled $<."
+
+clean:
+	@$(foreach file, $(OBJ_FILES), test -f $(file) && rm $(file) && echo "[$(NAME)] Removed $(file)." || :;)
+fclean: clean
+	@test -f $(NAME) && rm -f $(NAME) && echo "[$(NAME)] Removed archive." || :
+
+re: fclean all
+
+.PHONY: all clean fclean re
diff --git a/libft/ft_atoi.c b/libft/ft_atoi.c
new file mode 100644
index 0000000..90200fb
--- /dev/null
+++ b/libft/ft_atoi.c
@@ -0,0 +1,49 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_atoi.c                                          :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: dkaiser <dkaiser@student.42heilbronn.de    +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2024/03/06 16:25:27 by dkaiser           #+#    #+#             */
+/*   Updated: 2024/03/10 13:17:19 by dkaiser          ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "libft.h"
+
+int	ft_atoi(const char *str)
+{
+	int	result;
+	int	i;
+	int	posneg;
+
+	posneg = 1;
+	result = 0;
+	i = 0;
+	while ((str[i] >= '\t' && str[i] <= '\r') || str[i] == ' ')
+	{
+		i++;
+	}
+	if (str[i] == '-')
+	{
+		posneg = -1;
+		i++;
+	}
+	else if (str[i] == '+')
+		i++;
+	while (str[i] >= '0' && str[i] <= '9')
+	{
+		result = 10 * result + str[i] - '0';
+		i++;
+	}
+	return (result * posneg);
+}
+
+/* #include <stdio.h> */
+/* #include <stdlib.h> */
+/* int main() { */
+/*     char str[] = "         -42eaeouai"; */
+/*     printf("atoi: %d\n", atoi(str)); */
+/*     printf("ft_atoi: %d\n", ft_atoi(str)); */
+/* } */
diff --git a/libft/ft_atol.c b/libft/ft_atol.c
new file mode 100644
index 0000000..ae47db0
--- /dev/null
+++ b/libft/ft_atol.c
@@ -0,0 +1,41 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_atol.c                                          :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: dkaiser <dkaiser@student.42heilbronn.de    +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2024/04/26 16:18:28 by dkaiser           #+#    #+#             */
+/*   Updated: 2024/04/29 16:40:38 by dkaiser          ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "libft.h"
+
+long	ft_atol(const char *str)
+{
+	long	result;
+	int		i;
+	int		posneg;
+
+	posneg = 1;
+	result = 0;
+	i = 0;
+	while ((str[i] >= '\t' && str[i] <= '\r') || str[i] == ' ')
+	{
+		i++;
+	}
+	if (str[i] == '-')
+	{
+		posneg = -1;
+		i++;
+	}
+	else if (str[i] == '+')
+		i++;
+	while (str[i] >= '0' && str[i] <= '9')
+	{
+		result = 10 * result + str[i] - '0';
+		i++;
+	}
+	return (result * posneg);
+}
diff --git a/libft/ft_bzero.c b/libft/ft_bzero.c
new file mode 100644
index 0000000..78af51a
--- /dev/null
+++ b/libft/ft_bzero.c
@@ -0,0 +1,25 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_bzero.c                                         :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: dkaiser <dkaiser@student.42heilbronn.de    +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2024/03/05 10:57:36 by dkaiser           #+#    #+#             */
+/*   Updated: 2024/03/10 13:14:10 by dkaiser          ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "libft.h"
+
+void	ft_bzero(void *s, size_t n)
+{
+	size_t	i;
+
+	i = 0;
+	while (i < n)
+	{
+		((char *)s)[i] = 0;
+		i++;
+	}
+}
diff --git a/libft/ft_calloc.c b/libft/ft_calloc.c
new file mode 100644
index 0000000..0dcc434
--- /dev/null
+++ b/libft/ft_calloc.c
@@ -0,0 +1,23 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_calloc.c                                        :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: dkaiser <dkaiser@student.42heilbronn.de    +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2024/03/06 19:45:56 by dkaiser           #+#    #+#             */
+/*   Updated: 2024/03/10 15:34:06 by dkaiser          ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "libft.h"
+
+void	*ft_calloc(size_t count, size_t size)
+{
+	void	*result;
+
+	result = malloc(count * size);
+	if (result)
+		ft_bzero(result, count * size);
+	return (result);
+}
diff --git a/libft/ft_isalnum.c b/libft/ft_isalnum.c
new file mode 100644
index 0000000..d705500
--- /dev/null
+++ b/libft/ft_isalnum.c
@@ -0,0 +1,21 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_isalnum.c                                       :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: dkaiser <dkaiser@student.42heilbronn.de    +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2024/03/04 21:14:49 by dkaiser           #+#    #+#             */
+/*   Updated: 2024/03/10 13:10:50 by dkaiser          ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "libft.h"
+
+int	ft_isalnum(int c)
+{
+	if ((c >= 'A' && c <= 'Z') || (c >= 'a' && c <= 'z') || (c >= '0'
+			&& c <= '9'))
+		return (1);
+	return (0);
+}
diff --git a/libft/ft_isalpha.c b/libft/ft_isalpha.c
new file mode 100644
index 0000000..054d96c
--- /dev/null
+++ b/libft/ft_isalpha.c
@@ -0,0 +1,20 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_isalpha.c                                       :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: dkaiser <dkaiser@student.42heilbronn.de    +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2024/03/04 19:59:23 by dkaiser           #+#    #+#             */
+/*   Updated: 2024/03/10 13:10:10 by dkaiser          ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "libft.h"
+
+int	ft_isalpha(int c)
+{
+	if ((c >= 'A' && c <= 'Z') || (c >= 'a' && c <= 'z'))
+		return (1);
+	return (0);
+}
diff --git a/libft/ft_isascii.c b/libft/ft_isascii.c
new file mode 100644
index 0000000..6570d44
--- /dev/null
+++ b/libft/ft_isascii.c
@@ -0,0 +1,18 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_isascii.c                                       :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: dkaiser <dkaiser@student.42heilbronn.de    +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2024/03/04 21:23:25 by dkaiser           #+#    #+#             */
+/*   Updated: 2024/03/04 21:24:46 by dkaiser          ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+int	ft_isascii(int c)
+{
+	if (c >= 0 && c < 128)
+		return (1);
+	return (0);
+}
diff --git a/libft/ft_isdigit.c b/libft/ft_isdigit.c
new file mode 100644
index 0000000..2601fee
--- /dev/null
+++ b/libft/ft_isdigit.c
@@ -0,0 +1,20 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_isdigit.c                                       :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: dkaiser <dkaiser@student.42heilbronn.de    +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2024/03/04 21:07:03 by dkaiser           #+#    #+#             */
+/*   Updated: 2024/03/10 13:10:23 by dkaiser          ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "libft.h"
+
+int	ft_isdigit(int c)
+{
+	if (c >= '0' && c <= '9')
+		return (1);
+	return (0);
+}
diff --git a/libft/ft_isprint.c b/libft/ft_isprint.c
new file mode 100644
index 0000000..c04cf4f
--- /dev/null
+++ b/libft/ft_isprint.c
@@ -0,0 +1,20 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_isprint.c                                       :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: dkaiser <dkaiser@student.42heilbronn.de    +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2024/03/04 21:25:31 by dkaiser           #+#    #+#             */
+/*   Updated: 2024/03/10 13:11:14 by dkaiser          ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "libft.h"
+
+int	ft_isprint(int c)
+{
+	if (c >= ' ' && c <= '~')
+		return (1);
+	return (0);
+}
diff --git a/libft/ft_itoa.c b/libft/ft_itoa.c
new file mode 100644
index 0000000..401ba6a
--- /dev/null
+++ b/libft/ft_itoa.c
@@ -0,0 +1,68 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_itoa.c                                          :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: dkaiser <dkaiser@student.42heilbronn.de    +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2024/03/10 10:42:08 by dkaiser           #+#    #+#             */
+/*   Updated: 2024/03/10 13:18:58 by dkaiser          ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "libft.h"
+
+static int	get_last_digit(int n)
+{
+	int	last_digit;
+
+	last_digit = n % 10;
+	if (last_digit < 0)
+		last_digit *= -1;
+	return (last_digit);
+}
+
+static int	get_len(int n)
+{
+	int	len;
+
+	len = 0;
+	if (n == 0)
+		return (1);
+	if (n < 0)
+		len++;
+	while (n)
+	{
+		len++;
+		n /= 10;
+	}
+	return (len);
+}
+
+char	*ft_itoa(int n)
+{
+	char	*result;
+	int		len;
+
+	len = get_len(n);
+	result = malloc(sizeof(char) * (len + 1));
+	if (!result)
+		return (0);
+	result[len] = '\0';
+	if (n == 0)
+		result[0] = '0';
+	if (n < 0)
+		result[0] = '-';
+	while (n)
+	{
+		result[--len] = '0' + get_last_digit(n);
+		n /= 10;
+	}
+	return (result);
+}
+
+/* #include <stdio.h> */
+/* int main() { */
+/*     char* itoa = ft_itoa(0); */
+/*     printf("%s\n", itoa); */
+/* } */
diff --git a/libft/ft_lstadd_back_bonus.c b/libft/ft_lstadd_back_bonus.c
new file mode 100644
index 0000000..c4fb686
--- /dev/null
+++ b/libft/ft_lstadd_back_bonus.c
@@ -0,0 +1,30 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_lstadd_back_bonus.c                             :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: dkaiser <dkaiser@student.42heilbronn.de    +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2024/03/10 16:03:26 by dkaiser           #+#    #+#             */
+/*   Updated: 2024/03/10 18:00:17 by dkaiser          ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "libft.h"
+
+void	ft_lstadd_back(t_list **lst, t_list *new)
+{
+	t_list	*current;
+
+	if (!*lst)
+	{
+		*lst = new;
+		return ;
+	}
+	current = *lst;
+	while (current->next)
+	{
+		current = current->next;
+	}
+	current->next = new;
+}
diff --git a/libft/ft_lstadd_front_bonus.c b/libft/ft_lstadd_front_bonus.c
new file mode 100644
index 0000000..9c4c30e
--- /dev/null
+++ b/libft/ft_lstadd_front_bonus.c
@@ -0,0 +1,19 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_lstadd_front_bonus.c                            :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: dkaiser <dkaiser@student.42heilbronn.de    +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2024/03/10 15:14:01 by dkaiser           #+#    #+#             */
+/*   Updated: 2024/03/10 15:40:48 by dkaiser          ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "libft.h"
+
+void	ft_lstadd_front(t_list **lst, t_list *new)
+{
+	new->next = *lst;
+	*lst = new;
+}
diff --git a/libft/ft_lstclear_bonus.c b/libft/ft_lstclear_bonus.c
new file mode 100644
index 0000000..f661fc9
--- /dev/null
+++ b/libft/ft_lstclear_bonus.c
@@ -0,0 +1,32 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_lstclear_bonus.c                                :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: dkaiser <dkaiser@student.42heilbronn.de    +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2024/03/10 16:26:23 by dkaiser           #+#    #+#             */
+/*   Updated: 2024/03/11 12:48:24 by dkaiser          ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "libft.h"
+
+void	ft_lstclear(t_list **lst, void (*del)(void *))
+{
+	t_list	*current;
+	t_list	*next;
+
+	if (*lst)
+	{
+		current = *lst;
+		while (current->next)
+		{
+			next = current->next;
+			ft_lstdelone(current, del);
+			current = next;
+		}
+		ft_lstdelone(current, del);
+	}
+	*lst = NULL;
+}
diff --git a/libft/ft_lstdelone_bonus.c b/libft/ft_lstdelone_bonus.c
new file mode 100644
index 0000000..9dd78c8
--- /dev/null
+++ b/libft/ft_lstdelone_bonus.c
@@ -0,0 +1,19 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_lstdelone_bonus.c                               :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: dkaiser <dkaiser@student.42heilbronn.de    +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2024/03/10 16:20:31 by dkaiser           #+#    #+#             */
+/*   Updated: 2024/03/10 16:36:18 by dkaiser          ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "libft.h"
+
+void	ft_lstdelone(t_list *lst, void (*del)(void *))
+{
+	del(lst->content);
+	free(lst);
+}
diff --git a/libft/ft_lstiter_bonus.c b/libft/ft_lstiter_bonus.c
new file mode 100644
index 0000000..73efbe9
--- /dev/null
+++ b/libft/ft_lstiter_bonus.c
@@ -0,0 +1,25 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_lstiter_bonus.c                                 :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: dkaiser <dkaiser@student.42heilbronn.de    +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2024/03/10 16:39:47 by dkaiser           #+#    #+#             */
+/*   Updated: 2024/03/10 16:41:07 by dkaiser          ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "libft.h"
+
+void	ft_lstiter(t_list *lst, void (*f)(void *))
+{
+	if (!lst)
+		return ;
+	while (lst->next)
+	{
+		f(lst->content);
+		lst = lst->next;
+	}
+	f(lst->content);
+}
diff --git a/libft/ft_lstlast_bonus.c b/libft/ft_lstlast_bonus.c
new file mode 100644
index 0000000..e0b4d6d
--- /dev/null
+++ b/libft/ft_lstlast_bonus.c
@@ -0,0 +1,22 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_lstlast_bonus.c                                 :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: dkaiser <dkaiser@student.42heilbronn.de    +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2024/03/10 15:54:05 by dkaiser           #+#    #+#             */
+/*   Updated: 2024/03/10 16:36:04 by dkaiser          ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "libft.h"
+
+t_list	*ft_lstlast(t_list *lst)
+{
+	if (!lst)
+		return (0);
+	while (lst->next)
+		lst = lst->next;
+	return (lst);
+}
diff --git a/libft/ft_lstmap_bonus.c b/libft/ft_lstmap_bonus.c
new file mode 100644
index 0000000..43120cd
--- /dev/null
+++ b/libft/ft_lstmap_bonus.c
@@ -0,0 +1,38 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_lstmap_bonus.c                                  :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: dkaiser <dkaiser@student.42heilbronn.de    +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2024/03/10 16:45:21 by dkaiser           #+#    #+#             */
+/*   Updated: 2024/03/11 13:36:23 by dkaiser          ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "libft.h"
+
+t_list	*ft_lstmap(t_list *lst, void *(*f)(void *), void (*del)(void *))
+{
+	t_list	*result;
+	t_list	*cur_new;
+	void	*content;
+
+	if (!lst || !f || !del)
+		return (NULL);
+	result = NULL;
+	while (lst)
+	{
+		content = f(lst->content);
+		cur_new = ft_lstnew(content);
+		if (!cur_new)
+		{
+			del(content);
+			ft_lstclear(&result, del);
+			return (NULL);
+		}
+		lst = lst->next;
+		ft_lstadd_back(&result, cur_new);
+	}
+	return (result);
+}
diff --git a/libft/ft_lstnew_bonus.c b/libft/ft_lstnew_bonus.c
new file mode 100644
index 0000000..eeb6030
--- /dev/null
+++ b/libft/ft_lstnew_bonus.c
@@ -0,0 +1,34 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_lstnew_bonus.c                                  :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: dkaiser <dkaiser@student.42heilbronn.de    +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2024/03/10 14:57:39 by dkaiser           #+#    #+#             */
+/*   Updated: 2024/03/11 12:52:00 by dkaiser          ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "libft.h"
+
+t_list	*ft_lstnew(void *content)
+{
+	t_list	*result;
+
+	result = malloc(sizeof(t_list));
+	if (!result)
+		return (NULL);
+	result->content = content;
+	result->next = NULL;
+	return (result);
+}
+
+/* #include <stdio.h> */
+/* int main() { */
+/*     t_list l; */
+/*     char s[] = "Hello"; */
+
+/*     l = *ft_lstnew(&s); */
+/*     printf("%s\n", l.content); */
+/* } */
diff --git a/libft/ft_lstsize_bonus.c b/libft/ft_lstsize_bonus.c
new file mode 100644
index 0000000..c91b0c9
--- /dev/null
+++ b/libft/ft_lstsize_bonus.c
@@ -0,0 +1,28 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_lstsize_bonus.c                                 :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: dkaiser <dkaiser@student.42heilbronn.de    +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2024/03/10 15:35:38 by dkaiser           #+#    #+#             */
+/*   Updated: 2024/03/10 16:36:09 by dkaiser          ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "libft.h"
+
+int	ft_lstsize(t_list *lst)
+{
+	int	len;
+
+	if (!lst)
+		return (0);
+	len = 1;
+	while (lst->next)
+	{
+		lst = lst->next;
+		len++;
+	}
+	return (len);
+}
diff --git a/libft/ft_memchr.c b/libft/ft_memchr.c
new file mode 100644
index 0000000..568faa6
--- /dev/null
+++ b/libft/ft_memchr.c
@@ -0,0 +1,34 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_memchr.c                                        :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: dkaiser <dkaiser@student.42heilbronn.de    +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2024/03/06 15:23:01 by dkaiser           #+#    #+#             */
+/*   Updated: 2024/03/10 13:16:25 by dkaiser          ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "libft.h"
+
+void	*ft_memchr(const void *s, int c, size_t n)
+{
+	size_t	i;
+
+	i = 0;
+	while (i < n)
+	{
+		if (*((unsigned char *)s + i) == (unsigned char)c)
+			return ((void *)s + i);
+		i++;
+	}
+	return (0);
+}
+
+/* #include <stdio.h> */
+/* int main () { */
+/*     char str[] = "Hello world"; */
+/*     printf("memchr: %s\n", (char *) memchr(str, 'o', 11)); */
+/*     printf("ft_memchr: %s\n", (char *) ft_memchr(str, 'o', 11)); */
+/* } */
diff --git a/libft/ft_memcmp.c b/libft/ft_memcmp.c
new file mode 100644
index 0000000..0bd52df
--- /dev/null
+++ b/libft/ft_memcmp.c
@@ -0,0 +1,39 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_memcmp.c                                        :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: dkaiser <dkaiser@student.42heilbronn.de    +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2024/03/06 15:54:13 by dkaiser           #+#    #+#             */
+/*   Updated: 2024/03/10 13:13:54 by dkaiser          ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "libft.h"
+
+int	ft_memcmp(const void *s1, const void *s2, size_t n)
+{
+	size_t	i;
+	int		result;
+
+	i = 0;
+	result = 0;
+	while (!result && i < n)
+	{
+		result = *((unsigned char *)s1 + i) - *((unsigned char *)s2 + i);
+		i++;
+	}
+	return (result);
+}
+
+/* #include <stdio.h> */
+
+/* int	main(void) */
+/* { */
+/* 	char	str1[] = "Hello"; */
+/* 	char	str2[] = "Hellu"; */
+
+/* 	printf("memcmp: %d\n", memcmp(str1, str2, 5)); */
+/* 	printf("ft_memcmp: %d\n", ft_memcmp(str1, str2, 5)); */
+/* } */
diff --git a/libft/ft_memcpy.c b/libft/ft_memcpy.c
new file mode 100644
index 0000000..768d500
--- /dev/null
+++ b/libft/ft_memcpy.c
@@ -0,0 +1,38 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_memcpy.c                                        :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: dkaiser <dkaiser@student.42heilbronn.de    +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2024/03/05 11:15:12 by dkaiser           #+#    #+#             */
+/*   Updated: 2024/03/10 13:14:24 by dkaiser          ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "libft.h"
+
+void	*ft_memcpy(void *dst, const void *src, size_t n)
+{
+	char	*dst_ptr;
+	char	*src_ptr;
+
+	dst_ptr = (char *)dst;
+	src_ptr = (char *)src;
+	if (!dst && !src)
+		return (dst);
+	while (n--)
+		*dst_ptr++ = *src_ptr++;
+	return (dst);
+}
+
+/* #include <stdio.h> */
+/* int main(void) */
+/* { */
+/*     char src[] = "a"; */
+/*     char src2[] = "a"; */
+/*     char dst[] = ""; */
+/*     char dst2[] = ""; */
+/*     printf("ft_memcpy: %s\n", (char *) ft_memcpy(dst, src, 20)); */
+/*     printf("memcpy: %s\n", (char *) memcpy(dst2, src2, 20)); */
+/* } */
diff --git a/libft/ft_memmove.c b/libft/ft_memmove.c
new file mode 100644
index 0000000..5d12f20
--- /dev/null
+++ b/libft/ft_memmove.c
@@ -0,0 +1,50 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_memmove.c                                       :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: dkaiser <dkaiser@student.42heilbronn.de    +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2024/03/05 11:41:44 by dkaiser           #+#    #+#             */
+/*   Updated: 2024/03/10 13:14:38 by dkaiser          ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "libft.h"
+
+void	*ft_memmove(void *dst, const void *src, size_t len)
+{
+	size_t	i;
+
+	if (!dst && !src)
+		return (dst);
+	if (dst > src)
+	{
+		i = len;
+		while (i-- > 0)
+		{
+			*((char *)dst + i) = *((char *)src + i);
+		}
+	}
+	else
+	{
+		i = 0;
+		while (i < len)
+		{
+			*((char *)dst + i) = *((char *)src + i);
+			i++;
+		}
+	}
+	return (dst);
+}
+
+/* #include <stdio.h> */
+
+/* int	main(void) */
+/* { */
+/* 	char	text[] = "ABCDEFGHIJKLMNOPQRSTUVWXYZ"; */
+/* 	char	text2[] = "ABCDEFGHIJKLMNOPQRSTUVWXYZ"; */
+
+/* 	printf("memmove: %s\n", memmove(text + 5, text, 5)); */
+/* 	printf("ft_memmove: %s\n", ft_memmove(text2 + 5, text2, 5)); */
+/* } */
diff --git a/libft/ft_memset.c b/libft/ft_memset.c
new file mode 100644
index 0000000..58c5e1e
--- /dev/null
+++ b/libft/ft_memset.c
@@ -0,0 +1,37 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_memset.c                                        :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: dkaiser <dkaiser@student.42heilbronn.de    +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2024/03/05 09:58:19 by dkaiser           #+#    #+#             */
+/*   Updated: 2024/03/10 13:13:09 by dkaiser          ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "libft.h"
+
+void	*ft_memset(void *b, int c, size_t len)
+{
+	size_t	i;
+
+	i = 0;
+	while (i < len)
+	{
+		((char *)b)[i] = (unsigned char)c;
+		i++;
+	}
+	return (b);
+}
+
+/* #include <stdio.h> */
+
+/* int	main(void) */
+/* { */
+/* 	char	str[] = "Hello world"; */
+
+/* 	printf("STR: %s\n", str); */
+/* 	printf("ft_memset: %s\n", ft_memset((char *)str, 'A' + 255, 5)); */
+/* 	printf("memset: %s\n", memset((char *)str, 'A' + 255, 5)); */
+/* } */
diff --git a/libft/ft_printaddr.c b/libft/ft_printaddr.c
new file mode 100644
index 0000000..f60ce0d
--- /dev/null
+++ b/libft/ft_printaddr.c
@@ -0,0 +1,42 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_printaddr.c                                     :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: dkaiser <dkaiser@student.42heilbronn.de    +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2024/03/15 10:33:53 by dkaiser           #+#    #+#             */
+/*   Updated: 2024/03/18 11:42:58 by dkaiser          ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "ft_printf.h"
+
+static void	printaddr_rec(unsigned long addr, int *len)
+{
+	char	c;
+	int		success;
+
+	if (*len < 0)
+		return ;
+	if (addr % 16 < 10)
+		c = '0' + (addr % 16);
+	else
+		c = ('a' - 10) + (addr % 16);
+	if (addr > 15)
+		printaddr_rec(addr / 16, len);
+	success = write(1, &c, 1);
+	if (success < 0 || *len < 2)
+		*len = -1;
+	else
+		(*len)++;
+}
+
+int	ft_printaddr(void *addr)
+{
+	int	len;
+
+	len = write(1, "0x", 2);
+	printaddr_rec((unsigned long)addr, &len);
+	return (len);
+}
diff --git a/libft/ft_printf.c b/libft/ft_printf.c
new file mode 100644
index 0000000..fc77f81
--- /dev/null
+++ b/libft/ft_printf.c
@@ -0,0 +1,90 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_printf.c                                        :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: dkaiser <dkaiser@student.42heilbronn.de    +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2024/03/12 18:18:59 by dkaiser           #+#    #+#             */
+/*   Updated: 2024/03/18 11:42:34 by dkaiser          ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "ft_printf.h"
+
+static int	print_char(char c)
+{
+	return (write(1, &c, 1));
+}
+
+static int	print_str(char *str)
+{
+	int	success;
+	int	len;
+
+	if (str)
+	{
+		len = 0;
+		while (str[len])
+			len++;
+		success = write(1, str, len);
+		if (success < 0)
+			return (-1);
+		return (len);
+	}
+	else
+	{
+		success = write(1, "(null)", 6);
+		if (success == 6)
+			return (6);
+		return (-1);
+	}
+}
+
+static int	print_conv(va_list args, char c)
+{
+	if (c == 'c')
+		return (print_char(va_arg(args, int)));
+	if (c == 's')
+		return (print_str(va_arg(args, char *)));
+	if (c == 'p')
+		return (ft_printaddr(va_arg(args, void *)));
+	if (c == 'd' || c == 'i')
+		return (ft_printnbr(va_arg(args, int)));
+	if (c == 'u')
+		return (ft_printunbr(va_arg(args, unsigned int)));
+	if (c == 'x' || c == 'X')
+		return (ft_printhex(va_arg(args, unsigned int), c));
+	if (c == '%')
+		return (print_char('%'));
+	return (-1);
+}
+
+int	ft_printf(const char *fmt, ...)
+{
+	int		result;
+	int		last_result;
+	int		success;
+	va_list	args;
+
+	result = 0;
+	va_start(args, fmt);
+	while (*fmt)
+	{
+		last_result = result;
+		if (*fmt == '%')
+			result += print_conv(args, *(++fmt));
+		else
+		{
+			success = write(1, fmt, 1);
+			if (success <= 0)
+				return (-1);
+			result++;
+		}
+		fmt++;
+		if (result < last_result)
+			return (-1);
+	}
+	va_end(args);
+	return (result);
+}
diff --git a/libft/ft_printf.h b/libft/ft_printf.h
new file mode 100644
index 0000000..22f6a2a
--- /dev/null
+++ b/libft/ft_printf.h
@@ -0,0 +1,24 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_printf.h                                        :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: dkaiser <dkaiser@student.42heilbronn.de    +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2024/03/12 18:19:47 by dkaiser           #+#    #+#             */
+/*   Updated: 2024/03/15 13:33:09 by dkaiser          ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#ifndef FT_PRINTF_H
+# define FT_PRINTF_H
+
+# include <stdarg.h>
+# include <unistd.h>
+
+int	ft_printf(const char *fmt, ...);
+int	ft_printnbr(int nbr);
+int	ft_printunbr(unsigned int nbr);
+int	ft_printhex(unsigned int nbr, char fmt);
+int	ft_printaddr(void *addr);
+#endif // FT_PRINTF_H
diff --git a/libft/ft_printhex.c b/libft/ft_printhex.c
new file mode 100644
index 0000000..4605eac
--- /dev/null
+++ b/libft/ft_printhex.c
@@ -0,0 +1,44 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_printhex.c                                      :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: dkaiser <dkaiser@student.42heilbronn.de    +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2024/03/13 15:50:35 by dkaiser           #+#    #+#             */
+/*   Updated: 2024/03/18 11:42:46 by dkaiser          ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "ft_printf.h"
+
+static void	printhex_rec(unsigned int nbr, char fmt, int *len)
+{
+	char	c;
+	int		success;
+
+	if (*len < 0)
+		return ;
+	if (nbr % 16 < 10)
+		c = '0' + (nbr % 16);
+	else
+		c = (fmt - 33) + (nbr % 16);
+	if (nbr > 15)
+		printhex_rec(nbr / 16, fmt, len);
+	if (*len < 0)
+		return ;
+	success = write(1, &c, 1);
+	if (success < 0)
+		*len = -1;
+	else
+		(*len)++;
+}
+
+int	ft_printhex(unsigned int nbr, char fmt)
+{
+	int	len;
+
+	len = 0;
+	printhex_rec(nbr, fmt, &len);
+	return (len);
+}
diff --git a/libft/ft_printnbr.c b/libft/ft_printnbr.c
new file mode 100644
index 0000000..2a42ed8
--- /dev/null
+++ b/libft/ft_printnbr.c
@@ -0,0 +1,80 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_printnbr.c                                      :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: dkaiser <dkaiser@student.42heilbronn.de    +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2024/03/13 15:18:40 by dkaiser           #+#    #+#             */
+/*   Updated: 2024/03/18 11:41:27 by dkaiser          ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "ft_printf.h"
+
+static void	printnbr_rec(int n, int *len)
+{
+	char	c;
+	int		success;
+
+	if (*len < 0)
+		return ;
+	c = '0' + n % 10;
+	if (n > 9)
+		printnbr_rec(n / 10, len);
+	if (*len < 0)
+		return ;
+	success = write(1, &c, 1);
+	if (success < 0)
+		*len = -1;
+	else
+		(*len)++;
+}
+
+int	ft_printnbr(int nbr)
+{
+	int	len;
+
+	len = 0;
+	if (nbr == -2147483648)
+		return (write(1, "-2147483648", 11));
+	if (nbr < 0)
+	{
+		len = write(1, "-", 1);
+		nbr *= -1;
+	}
+	printnbr_rec(nbr, &len);
+	if (len < 0)
+		return (-1);
+	return (len);
+}
+
+static void	printunbr_rec(unsigned int n, int *len)
+{
+	char	c;
+	int		success;
+
+	if (*len < 0)
+		return ;
+	c = '0' + n % 10;
+	if (n > 9)
+		printunbr_rec(n / 10, len);
+	if (*len < 0)
+		return ;
+	success = write(1, &c, 1);
+	if (success < 0)
+		*len = -1;
+	else
+		(*len)++;
+}
+
+int	ft_printunbr(unsigned int nbr)
+{
+	int	len;
+
+	len = 0;
+	printunbr_rec(nbr, &len);
+	if (len < 0)
+		return (-1);
+	return (len);
+}
diff --git a/libft/ft_putchar_fd.c b/libft/ft_putchar_fd.c
new file mode 100644
index 0000000..5334e0e
--- /dev/null
+++ b/libft/ft_putchar_fd.c
@@ -0,0 +1,18 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_putchar_fd.c                                    :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: dkaiser <dkaiser@student.42heilbronn.de    +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2024/03/06 20:36:14 by dkaiser           #+#    #+#             */
+/*   Updated: 2024/03/10 13:19:59 by dkaiser          ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "libft.h"
+
+void	ft_putchar_fd(char c, int fd)
+{
+	write(fd, &c, 1);
+}
diff --git a/libft/ft_putendl_fd.c b/libft/ft_putendl_fd.c
new file mode 100644
index 0000000..f8de15e
--- /dev/null
+++ b/libft/ft_putendl_fd.c
@@ -0,0 +1,19 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_putendl_fd.c                                    :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: dkaiser <dkaiser@student.42heilbronn.de    +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2024/03/06 20:47:17 by dkaiser           #+#    #+#             */
+/*   Updated: 2024/03/10 14:07:58 by dkaiser          ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "libft.h"
+
+void	ft_putendl_fd(char *s, int fd)
+{
+	write(fd, s, ft_strlen(s));
+	write(fd, "\n", 1);
+}
diff --git a/libft/ft_putnbr_fd.c b/libft/ft_putnbr_fd.c
new file mode 100644
index 0000000..96f5f4b
--- /dev/null
+++ b/libft/ft_putnbr_fd.c
@@ -0,0 +1,38 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_putnbr_fd.c                                     :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: dkaiser <dkaiser@student.42heilbronn.de    +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2024/03/10 10:43:09 by dkaiser           #+#    #+#             */
+/*   Updated: 2024/03/10 13:20:59 by dkaiser          ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "libft.h"
+
+static void	putnbr_fd_rec(int n, int fd)
+{
+	char	c;
+
+	c = '0' + n % 10;
+	if (n > 9)
+		putnbr_fd_rec(n / 10, fd);
+	write(fd, &c, 1);
+}
+
+void	ft_putnbr_fd(int n, int fd)
+{
+	if (n == -2147483648)
+	{
+		write(fd, "-2147483648", 11);
+		return ;
+	}
+	if (n < 0)
+	{
+		write(fd, "-", 1);
+		n *= -1;
+	}
+	putnbr_fd_rec(n, fd);
+}
diff --git a/libft/ft_putstr_fd.c b/libft/ft_putstr_fd.c
new file mode 100644
index 0000000..cb78491
--- /dev/null
+++ b/libft/ft_putstr_fd.c
@@ -0,0 +1,18 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_putstr_fd.c                                     :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: dkaiser <dkaiser@student.42heilbronn.de    +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2024/03/06 20:43:05 by dkaiser           #+#    #+#             */
+/*   Updated: 2024/03/10 14:07:37 by dkaiser          ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "libft.h"
+
+void	ft_putstr_fd(char *s, int fd)
+{
+	write(fd, s, ft_strlen(s));
+}
diff --git a/libft/ft_split.c b/libft/ft_split.c
new file mode 100644
index 0000000..fbd16c1
--- /dev/null
+++ b/libft/ft_split.c
@@ -0,0 +1,114 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_split.c                                         :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: dkaiser <dkaiser@student.42heilbronn.de    +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2024/03/08 15:36:44 by dkaiser           #+#    #+#             */
+/*   Updated: 2024/05/08 11:49:32 by dkaiser          ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "libft.h"
+
+static int	get_word_count(char const *s, char c)
+{
+	int	word_count;
+	int	cur_len;
+
+	word_count = 0;
+	cur_len = 0;
+	while (*s)
+	{
+		if (!(*s) || *s == c)
+		{
+			cur_len = 0;
+		}
+		else
+		{
+			if (!cur_len)
+				word_count++;
+			cur_len++;
+		}
+		s++;
+	}
+	return (word_count);
+}
+
+static char	*get_next_token(char const **ptr_s, char c)
+{
+	int			i;
+	int			len;
+	char const	*s;
+	char		*result;
+
+	s = *ptr_s;
+	while (*s && *s == c)
+		s++;
+	if (!*s)
+		return (0);
+	len = 0;
+	while (s[len] && s[len] != c)
+		len++;
+	result = malloc(sizeof(char) * (len + 1));
+	if (!result)
+		return (0);
+	i = 0;
+	while (i < len)
+		result[i++] = *(s++);
+	result[i] = '\0';
+	*ptr_s = s;
+	return (result);
+}
+
+char	**ft_split(char const *s, char c)
+{
+	char	**result;
+	int		word_count;
+	int		w;
+
+	word_count = get_word_count((char *)s, c);
+	result = malloc(sizeof(char *) * (word_count + 1));
+	if (!result)
+		return (0);
+	w = 0;
+	while (w < word_count)
+	{
+		result[w] = get_next_token(&s, c);
+		if (!result[w])
+		{
+			while (w--)
+				free(result[w]);
+			free(result);
+			return (0);
+		}
+		w++;
+	}
+	result[w] = 0;
+	return (result);
+}
+
+void	ft_free_split(char **split)
+{
+	int	i;
+
+	i = 0;
+	while (split[i])
+		free(split[i++]);
+	free(split);
+}
+
+/* #include <stdio.h> */
+/* int main() */
+/* { */
+/*     char s[] = "      split       this for   me  !"; */
+/*     char **split = ft_split(s, ' '); */
+
+/*     if (split) { */
+/*         while(*split) { */
+/*             printf("%s\n", *split); */
+/*             split++; */
+/*         } */
+/*     } */
+/* } */
diff --git a/libft/ft_strchr.c b/libft/ft_strchr.c
new file mode 100644
index 0000000..ecf522e
--- /dev/null
+++ b/libft/ft_strchr.c
@@ -0,0 +1,40 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_strchr.c                                        :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: dkaiser <dkaiser@student.42heilbronn.de    +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2024/03/06 14:12:39 by dkaiser           #+#    #+#             */
+/*   Updated: 2024/03/10 13:15:56 by dkaiser          ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "libft.h"
+
+char	*ft_strchr(const char *s, int c)
+{
+	int	i;
+
+	i = 0;
+	while (s[i] != '\0')
+	{
+		if (s[i] == (char)c)
+			return ((char *)&s[i]);
+		i++;
+	}
+	if (!(char)c)
+		return ((char *)&s[i]);
+	return (0);
+}
+
+/* #include <stdio.h> */
+/* #include <string.h> */
+
+/* int	main(void) */
+/* { */
+/* 	char	str[] = "teste"; */
+
+/* 	printf("strchr: %p\n", strchr(str, '\0')); */
+/* 	printf("ft_strchr: %p\n", ft_strchr(str, '\0')); */
+/* } */
diff --git a/libft/ft_strdup.c b/libft/ft_strdup.c
new file mode 100644
index 0000000..c7a6591
--- /dev/null
+++ b/libft/ft_strdup.c
@@ -0,0 +1,36 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_strdup.c                                        :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: dkaiser <dkaiser@student.42heilbronn.de    +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2024/03/06 19:54:16 by dkaiser           #+#    #+#             */
+/*   Updated: 2024/03/10 15:28:58 by dkaiser          ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "libft.h"
+
+char	*ft_strdup(const char *s1)
+{
+	char	*result;
+	int		len;
+
+	len = ft_strlen(s1);
+	result = malloc(len + 1);
+	if (!result)
+		return (0);
+	result[len] = '\0';
+	while (len--)
+		result[len] = s1[len];
+	return (result);
+}
+
+/* #include <stdio.h> */
+/* int main() { */
+/*     char *output; */
+/*     char input[] = "test"; */
+/*     output = ft_strdup(input); */
+/*     printf("%s\n", output); */
+/* } */
diff --git a/libft/ft_striteri.c b/libft/ft_striteri.c
new file mode 100644
index 0000000..e7c8b89
--- /dev/null
+++ b/libft/ft_striteri.c
@@ -0,0 +1,25 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_striteri.c                                      :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: dkaiser <dkaiser@student.42heilbronn.de    +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2024/03/10 11:24:32 by dkaiser           #+#    #+#             */
+/*   Updated: 2024/03/10 13:19:39 by dkaiser          ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "libft.h"
+
+void	ft_striteri(char *s, void (*f)(unsigned int, char *))
+{
+	unsigned int	i;
+
+	i = 0;
+	while (s[i])
+	{
+		f(i, &s[i]);
+		i++;
+	}
+}
diff --git a/libft/ft_strjoin.c b/libft/ft_strjoin.c
new file mode 100644
index 0000000..526592b
--- /dev/null
+++ b/libft/ft_strjoin.c
@@ -0,0 +1,54 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_strjoin.c                                       :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: dkaiser <dkaiser@student.42heilbronn.de    +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2024/03/07 10:15:33 by dkaiser           #+#    #+#             */
+/*   Updated: 2024/03/10 14:02:07 by dkaiser          ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "libft.h"
+
+static int	copy_str(char *dst, const char *src)
+{
+	int	i;
+
+	i = 0;
+	while (src[i])
+	{
+		dst[i] = src[i];
+		i++;
+	}
+	return (i);
+}
+
+char	*ft_strjoin(char const *s1, char const *s2)
+{
+	int		len;
+	char	*result;
+
+	len = ft_strlen(s1) + ft_strlen(s2);
+	result = malloc(len + 1);
+	if (result)
+	{
+		result[len] = '\0';
+		len = copy_str(result, s1);
+		len = copy_str(result + len, s2);
+		return (result);
+	}
+	else
+		return (0);
+}
+
+/* #include <stdio.h> */
+
+/* int	main(void) */
+/* { */
+/* 	char	s1[] = "Hello "; */
+/* 	char	s2[] = "World"; */
+
+/* 	printf("%s\n", ft_strjoin(s1, s2)); */
+/* } */
diff --git a/libft/ft_strlcat.c b/libft/ft_strlcat.c
new file mode 100644
index 0000000..d49dfad
--- /dev/null
+++ b/libft/ft_strlcat.c
@@ -0,0 +1,72 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_strlcat.c                                       :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: dkaiser <dkaiser@student.42heilbronn.de    +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2024/03/06 13:36:59 by dkaiser           #+#    #+#             */
+/*   Updated: 2024/03/10 13:15:10 by dkaiser          ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "libft.h"
+
+/* size_t	ft_strlcat(char *dst, const char *src, size_t dstsize) */
+/* { */
+/* 	size_t	len; */
+/* 	size_t	i; */
+
+/* 	if (dstsize == 0) */
+/* 		return (0); */
+/* 	len = 0; */
+/* 	while (len < dstsize - 1 && dst[len] != '\0') */
+/* 	{ */
+/* 		len++; */
+/* 	} */
+/* 	i = 0; */
+/* 	while (len < dstsize - 1 && src[i] != '\0') */
+/* 	{ */
+/* 		dst[len] = src[i]; */
+/* 		len++; */
+/* 		i++; */
+/* 	} */
+/* 	dst[len] = '\0'; */
+/* 	return (len); */
+/* } */
+
+size_t	ft_strlcat(char *dst, const char *src, size_t dstsize)
+{
+	size_t	src_len;
+	size_t	dst_len;
+	size_t	i;
+
+	src_len = 0;
+	while (src[src_len])
+		src_len++;
+	dst_len = 0;
+	while (dst[dst_len])
+		dst_len++;
+	if (dst_len >= dstsize)
+		return (dstsize + src_len);
+	i = 0;
+	while (i < src_len && dst_len + i < dstsize - 1)
+	{
+		dst[dst_len + i] = src[i];
+		i++;
+	}
+	dst[dst_len + i] = '\0';
+	return (dst_len + src_len);
+}
+
+/* #include <stdio.h> */
+/* int main () { */
+/*     char dst[12] = "Hello "; */
+/*     char dst2[12] = "Hello "; */
+/*     char src[] = "World123"; */
+
+/*     size_t len = strlcat(dst, src, 12); */
+/*     size_t len2 = ft_strlcat(dst2, src, 12); */
+/*     printf("strlcat (%zu): %s\n", len, dst); */
+/*     printf("ft_strlcat (%zu): %s\n", len2, dst2); */
+/* } */
diff --git a/libft/ft_strlcpy.c b/libft/ft_strlcpy.c
new file mode 100644
index 0000000..1cc62e5
--- /dev/null
+++ b/libft/ft_strlcpy.c
@@ -0,0 +1,53 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_strlcpy.c                                       :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: dkaiser <dkaiser@student.42heilbronn.de    +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2024/03/06 12:45:25 by dkaiser           #+#    #+#             */
+/*   Updated: 2024/03/10 13:14:56 by dkaiser          ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "libft.h"
+
+size_t	ft_strlcpy(char *dst, const char *src, size_t dstsize)
+{
+	size_t	len;
+
+	len = 0;
+	if (dstsize > 0)
+	{
+		while (len < dstsize - 1 && src[len] != '\0')
+		{
+			dst[len] = src[len];
+			len++;
+		}
+		dst[len] = '\0';
+		while (src[len] != '\0')
+			len++;
+	}
+	else
+	{
+		while (src[len] != '\0')
+			len++;
+	}
+	return (len);
+}
+
+/* #include <stdio.h> */
+
+/* int	main(void) */
+/* { */
+/* 	char	src[] = "Hello"; */
+/* 	char	dst[] = "01234567890123456789"; */
+/* 	char	dst2[] = "01234567890123456789"; */
+/* 	size_t	len; */
+/* 	size_t	len2; */
+
+/* 	len = strlcpy(dst, src, 0); */
+/* 	len2 = ft_strlcpy(dst2, src, 0); */
+/* 	printf("strlcpy (%zu): %s\n", len, dst); */
+/* 	printf("ft_strlcpy (%zu): %s\n", len2, dst2); */
+/* } */
diff --git a/libft/ft_strlen.c b/libft/ft_strlen.c
new file mode 100644
index 0000000..867c5eb
--- /dev/null
+++ b/libft/ft_strlen.c
@@ -0,0 +1,23 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_strlen.c                                        :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: dkaiser <dkaiser@student.42heilbronn.de    +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2024/03/04 21:29:35 by dkaiser           #+#    #+#             */
+/*   Updated: 2024/03/10 13:11:48 by dkaiser          ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "libft.h"
+
+int	ft_strlen(const char *str)
+{
+	int	len;
+
+	len = 0;
+	while (str[len])
+		len++;
+	return (len);
+}
diff --git a/libft/ft_strmapi.c b/libft/ft_strmapi.c
new file mode 100644
index 0000000..a500621
--- /dev/null
+++ b/libft/ft_strmapi.c
@@ -0,0 +1,44 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_strmapi.c                                       :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: dkaiser <dkaiser@student.42heilbronn.de    +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2024/03/10 11:11:30 by dkaiser           #+#    #+#             */
+/*   Updated: 2024/03/10 14:06:41 by dkaiser          ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "libft.h"
+
+char	*ft_strmapi(char const *s, char (*f)(unsigned int, char))
+{
+	char			*result;
+	unsigned int	i;
+
+	i = ft_strlen(s);
+	result = malloc(sizeof(char) * (i + 1));
+	if (!result)
+		return (0);
+	result[i] = '\0';
+	i = 0;
+	while (s[i])
+	{
+		result[i] = f(i, s[i]);
+		i++;
+	}
+	return (result);
+}
+
+/* char func (unsigned int i, char c) */
+/* { */
+/*     c += i; */
+/*     return (c); */
+/* } */
+
+/* #include <stdio.h> */
+/* int main(){ */
+/*     char str[] = "AAAAAAAA"; */
+/*     printf("%s\n", ft_strmapi(str, func)); */
+/* } */
diff --git a/libft/ft_strncmp.c b/libft/ft_strncmp.c
new file mode 100644
index 0000000..9d30ee7
--- /dev/null
+++ b/libft/ft_strncmp.c
@@ -0,0 +1,38 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_strncmp.c                                       :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: dkaiser <dkaiser@student.42heilbronn.de    +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2024/03/06 14:45:10 by dkaiser           #+#    #+#             */
+/*   Updated: 2024/03/10 13:16:10 by dkaiser          ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "libft.h"
+
+int	ft_strncmp(const char *s1, const char *s2, size_t n)
+{
+	int	result;
+
+	result = 0;
+	while (!result && n > 0 && (*s1 || *s2))
+	{
+		result = (unsigned char)*s1 - (unsigned char)*s2;
+		if (*s1)
+			s1++;
+		if (*s2)
+			s2++;
+		n--;
+	}
+	return (result);
+}
+
+/* #include <stdio.h> */
+/* int main() { */
+/*     char str1[] = "Hello"; */
+/*     char str2[] = "Hellu"; */
+/*     printf("strncmp: %d\n", strncmp(str1, str2, 5)); */
+/*     printf("ft_strncmp: %d\n", ft_strncmp(str1, str2, 5)); */
+/* } */
diff --git a/libft/ft_strnstr.c b/libft/ft_strnstr.c
new file mode 100644
index 0000000..373e90c
--- /dev/null
+++ b/libft/ft_strnstr.c
@@ -0,0 +1,47 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_strnstr.c                                       :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: dkaiser <dkaiser@student.42heilbronn.de    +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2024/03/06 16:07:54 by dkaiser           #+#    #+#             */
+/*   Updated: 2024/03/11 15:04:28 by dkaiser          ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "libft.h"
+
+char	*ft_strnstr(const char *haystack, const char *needle, size_t len)
+{
+	size_t	i;
+	size_t	k;
+
+	if (!*haystack && *needle)
+		return (0);
+	i = 0;
+	if (*needle == '\0' || needle == haystack)
+		return ((char *)haystack);
+	while (i < len && haystack[i])
+	{
+		k = 0;
+		while (haystack[i + k] && haystack[i + k] == needle[k] && i + k < len)
+			k++;
+		if (!needle[k])
+			return ((char *)haystack + i);
+		i++;
+	}
+	return (0);
+}
+
+/* #include <stdio.h> */
+
+/* int	main(void) */
+/* { */
+/* 	char	haystack[] = "abc"; */
+/* 	char	needle[] = "abcde"; */
+/* 	size_t	len = 5; */
+
+/* 	printf("strnstr: %s\n", strnstr(haystack, needle, len)); */
+/* 	printf("ft_strnstr: %s\n", ft_strnstr(haystack, needle, len)); */
+/* } */
diff --git a/libft/ft_strrchr.c b/libft/ft_strrchr.c
new file mode 100644
index 0000000..5d31654
--- /dev/null
+++ b/libft/ft_strrchr.c
@@ -0,0 +1,40 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_strrchr.c                                       :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: dkaiser <dkaiser@student.42heilbronn.de    +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2024/03/06 14:25:30 by dkaiser           #+#    #+#             */
+/*   Updated: 2024/03/10 12:51:38 by dkaiser          ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+char	*ft_strrchr(const char *s, int c)
+{
+	int		i;
+	char	*last_occurrence;
+
+	last_occurrence = 0;
+	i = 0;
+	while (s[i] != '\0')
+	{
+		if (s[i] == (char)c)
+			last_occurrence = (char *)&s[i];
+		i++;
+	}
+	if (!(char)c)
+		last_occurrence = (char *)&s[i];
+	return (last_occurrence);
+}
+
+/* #include <stdio.h> */
+/* #include <string.h> */
+
+/* int	main(void) */
+/* { */
+/* 	char	str[] = "Hello world"; */
+
+/* 	printf("strrchr: %s\n", strrchr(str, 'o')); */
+/* 	printf("ft_strrchr: %s\n", ft_strrchr(str, 'o')); */
+/* } */
diff --git a/libft/ft_strtrim.c b/libft/ft_strtrim.c
new file mode 100644
index 0000000..9caf12f
--- /dev/null
+++ b/libft/ft_strtrim.c
@@ -0,0 +1,61 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_strtrim.c                                       :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: dkaiser <dkaiser@student.42heilbronn.de    +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2024/03/07 10:24:17 by dkaiser           #+#    #+#             */
+/*   Updated: 2024/03/10 14:03:13 by dkaiser          ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "libft.h"
+
+static int	is_in(char c, const char *str)
+{
+	while (*str)
+	{
+		if (c == *str)
+			return (1);
+		else
+			str++;
+	}
+	return (0);
+}
+
+char	*ft_strtrim(char const *s1, char const *set)
+{
+	int		i;
+	char	*start;
+	char	*end;
+	char	*result;
+
+	start = (char *)s1;
+	while (is_in(*start, set))
+		start++;
+	i = ft_strlen(s1);
+	end = (char *)s1 + i - 1;
+	while (end > start && is_in(*end, set))
+		end--;
+	i = end - start + 1;
+	result = malloc(i + 1);
+	if (result)
+	{
+		result[i] = '\0';
+		i = 0;
+		while (start <= end)
+			result[i++] = *(start++);
+		return (result);
+	}
+	return (0);
+}
+
+/* #include <stdio.h> */
+
+/* int	main(void) */
+/* { */
+/* 	char	s1[] = " \t   \t  \t  "; */
+
+/* 	printf("%s\n", ft_strtrim(s1, " \t")); */
+/* } */
diff --git a/libft/ft_substr.c b/libft/ft_substr.c
new file mode 100644
index 0000000..81ca8c6
--- /dev/null
+++ b/libft/ft_substr.c
@@ -0,0 +1,45 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_substr.c                                        :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: dkaiser <dkaiser@student.42heilbronn.de    +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2024/03/06 21:58:31 by dkaiser           #+#    #+#             */
+/*   Updated: 2024/03/10 15:39:38 by dkaiser          ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "libft.h"
+
+char	*ft_substr(char const *s, unsigned int start, size_t len)
+{
+	unsigned int	slen;
+	size_t			i;
+	char			*result;
+
+	slen = ft_strlen(s);
+	if (start >= slen)
+		len = 0;
+	if (slen - start < len)
+		len = (slen - start);
+	result = malloc(len + 1);
+	if (!result)
+		return (0);
+	result[len] = '\0';
+	i = 0;
+	while (i < len)
+	{
+		result[i] = s[i + start];
+		i++;
+	}
+	return (result);
+}
+
+/* #include <stdio.h> */
+/* int main () */
+/* { */
+/*     char s[] = "Hello there"; */
+/*     char *substr = ft_substr(s, 0, 2); */
+/*     printf("%s\n", substr); */
+/* } */
diff --git a/libft/ft_tolower.c b/libft/ft_tolower.c
new file mode 100644
index 0000000..c81b9ef
--- /dev/null
+++ b/libft/ft_tolower.c
@@ -0,0 +1,20 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_tolower.c                                       :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: dkaiser <dkaiser@student.42heilbronn.de    +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2024/03/04 21:49:28 by dkaiser           #+#    #+#             */
+/*   Updated: 2024/03/10 13:15:39 by dkaiser          ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "libft.h"
+
+int	ft_tolower(int c)
+{
+	if (c >= 'A' && c <= 'Z')
+		return (c + 32);
+	return (c);
+}
diff --git a/libft/ft_toupper.c b/libft/ft_toupper.c
new file mode 100644
index 0000000..51e4ba6
--- /dev/null
+++ b/libft/ft_toupper.c
@@ -0,0 +1,20 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_toupper.c                                       :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: dkaiser <dkaiser@student.42heilbronn.de    +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2024/03/04 21:33:34 by dkaiser           #+#    #+#             */
+/*   Updated: 2024/03/10 13:15:26 by dkaiser          ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "libft.h"
+
+int	ft_toupper(int c)
+{
+	if (c >= 'a' && c <= 'z')
+		return (c - 32);
+	return (c);
+}
diff --git a/libft/get_next_line.c b/libft/get_next_line.c
new file mode 100644
index 0000000..46edb73
--- /dev/null
+++ b/libft/get_next_line.c
@@ -0,0 +1,84 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   get_next_line.c                                    :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: dkaiser <dkaiser@student.42heilbronn.de    +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2024/03/15 14:13:51 by dkaiser           #+#    #+#             */
+/*   Updated: 2024/03/25 15:26:21 by dkaiser          ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "get_next_line.h"
+
+static int	get_next_line_len(char *buf, int pos)
+{
+	int	len;
+
+	len = 0;
+	while (pos + len < BUFFER_SIZE)
+	{
+		if (buf[pos + len] == '\n')
+		{
+			len++;
+			break ;
+		}
+		if (!buf[pos + len])
+			break ;
+		len++;
+	}
+	return (len);
+}
+
+static void	get_next_line_rec(int fd, char *buf, char **result, int pos)
+{
+	int	len;
+	int	i;
+	int	readlen;
+
+	len = get_next_line_len(buf, pos);
+	*result = str_add_buffer(*result, buf + pos, len);
+	if (pos + len == BUFFER_SIZE && buf[BUFFER_SIZE - 1] == '\n')
+		return (clear_buffer(buf, pos));
+	i = 0;
+	while (i < len)
+		buf[pos + i++] = '\0';
+	if (pos + len == BUFFER_SIZE && *result)
+	{
+		readlen = read(fd, buf, BUFFER_SIZE);
+		if (readlen < 0)
+		{
+			clear_buffer(buf, 0);
+			free(*result);
+			*result = NULL;
+		}
+		else if (readlen > 0)
+			get_next_line_rec(fd, buf, result, 0);
+	}
+}
+
+char	*get_next_line(int fd)
+{
+	static char	buf[BUFFER_SIZE];
+	int			i;
+	char		*result;
+	int			readlen;
+
+	i = 0;
+	readlen = 0;
+	result = NULL;
+	while (i < BUFFER_SIZE && !buf[i])
+		i++;
+	if (i == BUFFER_SIZE)
+	{
+		readlen = read(fd, buf, BUFFER_SIZE);
+		if (readlen < 0)
+			clear_buffer(buf, 0);
+		else if (readlen > 0)
+			return (get_next_line(fd));
+		return (NULL);
+	}
+	get_next_line_rec(fd, buf, &result, i);
+	return (result);
+}
diff --git a/libft/get_next_line.h b/libft/get_next_line.h
new file mode 100644
index 0000000..63c477b
--- /dev/null
+++ b/libft/get_next_line.h
@@ -0,0 +1,26 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   get_next_line.h                                    :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: dkaiser <dkaiser@student.42heilbronn.de    +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2024/03/15 14:14:07 by dkaiser           #+#    #+#             */
+/*   Updated: 2024/03/25 14:19:27 by dkaiser          ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#ifndef GET_NEXT_LINE_H
+# define GET_NEXT_LINE_H
+# include <stdlib.h>
+# include <unistd.h>
+
+# ifndef BUFFER_SIZE
+#  define BUFFER_SIZE 42
+# endif
+
+int		ft_strlen(const char *str);
+char	*get_next_line(int fd);
+void	clear_buffer(char *buf, int start);
+char	*str_add_buffer(char *old_str, char *buf, int buf_len);
+#endif // GET_NEXT_LINE_H
diff --git a/libft/get_next_line_utils.c b/libft/get_next_line_utils.c
new file mode 100644
index 0000000..61171be
--- /dev/null
+++ b/libft/get_next_line_utils.c
@@ -0,0 +1,60 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   get_next_line_utils.c                              :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: dkaiser <dkaiser@student.42heilbronn.de    +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2024/03/15 14:14:59 by dkaiser           #+#    #+#             */
+/*   Updated: 2024/03/26 10:49:08 by dkaiser          ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "get_next_line.h"
+
+int	ft_strlen(const char *str)
+{
+	int	len;
+
+	if (!str)
+		return (0);
+	len = 0;
+	while (str[len])
+		len++;
+	return (len);
+}
+
+void	clear_buffer(char *buf, int start)
+{
+	while (start < BUFFER_SIZE)
+		buf[start++] = '\0';
+}
+
+char	*str_add_buffer(char *old_str, char *buf, int buf_len)
+{
+	char	*result;
+	int		len;
+	int		i;
+
+	if (!old_str)
+		len = buf_len;
+	else
+		len = ft_strlen(old_str) + buf_len;
+	result = malloc(sizeof(char) * (len + 1));
+	if (!result)
+	{
+		free(old_str);
+		return (NULL);
+	}
+	result[len] = '\0';
+	i = 0;
+	while (old_str && old_str[i])
+	{
+		result[i] = old_str[i];
+		i++;
+	}
+	while (i < len)
+		result[i++] = *(buf++);
+	free(old_str);
+	return (result);
+}
diff --git a/libft/libft.h b/libft/libft.h
new file mode 100644
index 0000000..3e50184
--- /dev/null
+++ b/libft/libft.h
@@ -0,0 +1,75 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   libft.h                                            :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: dkaiser <dkaiser@student.42heilbronn.de    +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2024/03/10 16:37:54 by dkaiser           #+#    #+#             */
+/*   Updated: 2024/05/08 11:50:11 by dkaiser          ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#ifndef LIBFT_H
+# define LIBFT_H
+
+# include "ft_printf.h"
+# include "get_next_line.h"
+# include <stdlib.h>
+# include <string.h>
+# include <unistd.h>
+
+int					ft_isalpha(int c);
+int					ft_isdigit(int c);
+int					ft_isalnum(int c);
+int					ft_isprint(int c);
+int					ft_isascii(int c);
+int					ft_strlen(const char *str);
+void				*ft_memset(void *b, int c, size_t len);
+void				ft_bzero(void *s, size_t n);
+void				*ft_memcpy(void *dst, const void *src, size_t n);
+void				*ft_memmove(void *dst, const void *src, size_t len);
+size_t				ft_strlcpy(char *dst, const char *src, size_t dstsize);
+size_t				ft_strlcat(char *dst, const char *src, size_t dstsize);
+int					ft_toupper(int c);
+int					ft_tolower(int c);
+char				*ft_strchr(const char *s, int c);
+char				*ft_strrchr(const char *s, int c);
+int					ft_strncmp(const char *s1, const char *s2, size_t n);
+void				*ft_memchr(const void *s, int c, size_t n);
+int					ft_memcmp(const void *s1, const void *s2, size_t n);
+char				*ft_strnstr(const char *haystack, const char *needle,
+						size_t len);
+int					ft_atoi(const char *str);
+long				ft_atol(const char *str);
+void				*ft_calloc(size_t count, size_t size);
+char				*ft_strdup(const char *s1);
+char				*ft_substr(char const *s, unsigned int start, size_t len);
+char				*ft_strjoin(char const *s1, char const *s2);
+char				*ft_strtrim(char const *s1, char const *set);
+char				**ft_split(char const *s, char c);
+void				ft_free_split(char **split);
+char				*ft_itoa(int n);
+char				*ft_strmapi(char const *s, char (*f)(unsigned int, char));
+void				ft_striteri(char *s, void (*f)(unsigned int, char *));
+void				ft_putchar_fd(char c, int fd);
+void				ft_putstr_fd(char *s, int fd);
+void				ft_putendl_fd(char *s, int fd);
+void				ft_putnbr_fd(int n, int fd);
+
+typedef struct s_list
+{
+	void			*content;
+	struct s_list	*next;
+}					t_list;
+t_list				*ft_lstnew(void *content);
+void				ft_lstadd_front(t_list **lst, t_list *new);
+int					ft_lstsize(t_list *lst);
+t_list				*ft_lstlast(t_list *lst);
+void				ft_lstadd_back(t_list **lst, t_list *new);
+void				ft_lstdelone(t_list *lst, void (*del)(void *));
+void				ft_lstclear(t_list **lst, void (*del)(void *));
+void				ft_lstiter(t_list *lst, void (*f)(void *));
+t_list				*ft_lstmap(t_list *lst, void *(*f)(void *),
+						void (*del)(void *));
+#endif