From: Lukas Jiriste <ljiriste@student.42prague.com>
Date: Fri, 15 Sep 2023 16:48:24 +0000 (+0200)
Subject: Added the function itoa_base fr unsigned integers. Changed libft.h accordingly.
X-Git-Url: https://git.ljiriste.work/?a=commitdiff_plain;h=ddbbb7c8475d0ea607f847ddfba7e094217d7333;p=Libft.git

Added the function itoa_base fr unsigned integers. Changed libft.h accordingly.
---

diff --git a/ft_uitoa_base.c b/ft_uitoa_base.c
new file mode 100644
index 0000000..3d446c2
--- /dev/null
+++ b/ft_uitoa_base.c
@@ -0,0 +1,73 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_uitoa_base.c                                    :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: ljiriste <marvin@42.fr>                    +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2023/09/05 09:46:11 by ljiriste          #+#    #+#             */
+/*   Updated: 2023/09/15 18:43:25 by ljiriste         ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include <stdlib.h>	//malloc
+#include <stdint.h>	//intmax_t
+#include "libft.h"
+
+static int	size_needed(uintmax_t n, size_t base_len)
+{
+	int	res;
+
+	if (n == 0)
+		return (2);
+	res = 1;
+	while (n != 0)
+	{
+		++res;
+		n /= base_len;
+	}
+	return (res);
+}
+
+static int	valid_base(const char *base)
+{
+	int	i;
+	int	j;
+
+	if (ft_strlen(base) < 2)
+		return (0);
+	i = 0;
+	while (base[i])
+	{
+		j = i + 1;
+		while (base[j])
+			if (base[i] == base[j++])
+				return (0);
+		++i;
+	}
+	return (1);
+}
+
+char	*ft_uitoa_base(uintmax_t n, const char *base)
+{
+	int		size;
+	int		base_len;
+	char	*res;
+
+	if (!valid_base(base))
+		return (NULL);
+	base_len = ft_strlen(base);
+	size = size_needed(n, base_len);
+	res = malloc(size);
+	if (res == NULL)
+		return (res);
+	res[--size] = '\0';
+	if (n == 0)
+		res[0] = base[0];
+	while (n != 0)
+	{
+		res[--size] = base[n % base_len];
+		n /= base_len;
+	}
+	return (res);
+}
diff --git a/libft.h b/libft.h
index c837206..2a9f9ec 100644
--- a/libft.h
+++ b/libft.h
@@ -6,7 +6,7 @@
 /*   By: ljiriste <marvin@42.fr>                    +#+  +:+       +#+        */
 /*                                                +#+#+#+#+#+   +#+           */
 /*   Created: 2023/08/15 12:58:15 by ljiriste          #+#    #+#             */
-/*   Updated: 2023/09/05 12:06:26 by ljiriste         ###   ########.fr       */
+/*   Updated: 2023/09/15 18:43:23 by ljiriste         ###   ########.fr       */
 /*                                                                            */
 /* ************************************************************************** */
 
@@ -57,6 +57,7 @@ char	**ft_split(const char *s, char c);
 
 char	*ft_itoa(int n);
 char	*ft_itoa_base(intmax_t n, const char *base);
+char	*ft_uitoa_base(uintmax_t n, const char *base);
 char	*ft_ctoa(char c);
 
 char	*ft_strmapi(const char *s, char (*f)(unsigned int, char));