From 02344fc38e2375102a913685c21acc35141c2cb0 Mon Sep 17 00:00:00 2001
From: Dominik Kaiser
Date: Fri, 15 Mar 2024 13:02:59 +0100
Subject: Add error handling

---
 src/ft_printhex.c | 51 ++++++++++++++++++++++++---------------------------
 1 file changed, 24 insertions(+), 27 deletions(-)

(limited to 'src/ft_printhex.c')

diff --git a/src/ft_printhex.c b/src/ft_printhex.c
index e96b322..d65de1c 100644
--- a/src/ft_printhex.c
+++ b/src/ft_printhex.c
@@ -6,42 +6,39 @@
 /*   By: dkaiser <dkaiser@student.42heilbronn.de    +#+  +:+       +#+        */
 /*                                                +#+#+#+#+#+   +#+           */
 /*   Created: 2024/03/13 15:50:35 by dkaiser           #+#    #+#             */
-/*   Updated: 2024/03/13 16:00:38 by dkaiser          ###   ########.fr       */
+/*   Updated: 2024/03/15 12:40:38 by dkaiser          ###   ########.fr       */
 /*                                                                            */
 /* ************************************************************************** */
 
 #include "../ft_printf.h"
 
-static int get_len(unsigned int n)
+static void	printhex_rec(unsigned int nbr, char fmt, int *len)
 {
-    int len;
+	char	c;
+	int		success;
 
-    len = 0;
-    if (n == 0)
-        return 1;
-    while (n)
-    {
-        len++;
-        n /= 16;
-    }
-    return len;
+	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)++;
 }
 
-static void printhex_rec(unsigned int nbr, char fmt)
+int	ft_printhex(unsigned int nbr, char fmt)
 {
-    char c;
+	int	len;
 
-    if (nbr % 16 < 10)
-        c = '0' + (nbr % 16);
-    else
-        c = fmt - 35 + (nbr % 16);
-    if (nbr > 15)
-        printhex_rec(nbr, fmt);
-    write(1, &c, 1);
-}
-
-int ft_printhex(unsigned int nbr, char fmt)
-{
-    printhex_rec(nbr, fmt);
-    return get_len(nbr);
+	len = 0;
+	printhex_rec(nbr, fmt, &len);
+	return (len);
 }
-- 
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