Add libft and input handling

1 files changed, 104 insertions, 0 deletions

diff --git a/libft/ft_split.c b/libft/ft_split.c
new file mode 100644
index 0000000..e9ba9f9
--- /dev/null
+++ b/libft/ft_split.c
@@ -0,0 +1,104 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_split.c                                         :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: dkaiser <dkaiser@student.42heilbronn.de    +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2024/03/08 15:36:44 by dkaiser           #+#    #+#             */
+/*   Updated: 2024/03/10 13:09:06 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);
+}
+
+/* #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++; */
+/*         } */
+/*     } */
+/* } */