split_keep

2025-01-21 12:02:30 +01:00
parent 2f97574a37
commit 281c8c0f63
4 changed files with 135 additions and 19 deletions
--- a/lib/libft/srcs/format/ft_split_keep.c
+++ b/lib/libft/srcs/format/ft_split_keep.c
@@ -0,0 +1,102 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_split_keep.c                                    :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: nalebrun <nalebrun@student.s19.be>        +#+  +:+       +#+         */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2025/01/21 11:31:48 by nalebrun          #+#    #+#             */
+/*   Updated: 2025/01/21 11:31:48 by nalebrun         ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "../../libft.h"
+
+static int	count_strings(char const *s, char *set)
+{
+	int	count;
+	int	in_word;
+
+	count = 0;
+	in_word = 0;
+	while (*s)
+	{
+		if (!is_charset(*s, set) && !in_word)
+		{
+			count++;
+			in_word = 1;
+		}
+		else if (is_charset(*s, set))
+			in_word = 0;
+		s++;
+	}
+	return (count);
+}
+
+static void	build_str(char const *src, char *dest, char *set)
+{
+	int	i;
+
+	i = 0;
+	while (src[i] && !is_charset(src[i], set))
+	{
+		dest[i] = src[i];
+		i++;
+	}
+	while (src[i] && is_charset(src[i], set))
+	{
+		dest[i] = src[i];
+		i++;
+	}
+	dest[i] = '\0';
+}
+
+static char	**alloc_tab(char const *s, char *set)
+{
+	int		count;
+	char	**tab;
+
+	count = count_strings(s, set);
+	tab = ft_calloc(count + 1, sizeof(char *));
+	return (tab);
+}
+
+static char	**build_tab(char **tab, char const *s, char *set)
+{
+	int	i;
+	int	j;
+	int	count;
+
+	i = 0;
+	count = 0;
+	while (tab && s[i])
+	{
+		if (is_charset(s[i], set))
+			i++;
+		else
+		{
+			j = 0;
+			while (s[i + j] && !is_charset(s[i + j], set))
+				j++;
+			while (s[i + j] && is_charset(s[i + j], set))
+				j++;
+			tab[count] = ft_calloc((j + 1), sizeof(char));
+			if (!tab[count])
+				return (free_all(tab, count));
+			build_str(&s[i], tab[count++], set);
+			i += j;
+		}
+	}
+	return (tab);
+}
+
+char	**ft_split_keep(char const *s, char *set)
+{
+	char	**tab;
+
+	tab = alloc_tab(s, set);
+	if (!tab)
+		return (NULL);
+	tab = build_tab(tab, s, set);
+	return (tab);
+}