From ecf80e8f91e3570978ded0be55f381a7d36109ef Mon Sep 17 00:00:00 2001
From: Stefan Tatschner <stefan@rumpelsepp.org>
Date: Wed, 13 Nov 2019 12:32:38 +0100
Subject: [PATCH] isotpsniffer: Use isprint() instead of manual check

---
 isotpsniffer.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/isotpsniffer.c b/isotpsniffer.c
index 8ea2f4b..cc9d196 100644
--- a/isotpsniffer.c
+++ b/isotpsniffer.c
@@ -44,6 +44,7 @@
 
 #include <stdio.h>
 #include <unistd.h>
+#include <ctype.h>
 #include <stdlib.h>
 #include <string.h>
 #include <libgen.h>
@@ -153,7 +154,7 @@ void printbuf(unsigned char *buffer, int nbytes, int color, int timestamp,
 	if (format & FORMAT_ASCII) {
 		printf("'");
 		for (i=0; i<nbytes; i++) {
-			if ((buffer[i] > 0x1F) && (buffer[i] < 0x7F))
+			if (isprint(buffer[i]))
 				printf("%c", buffer[i]);
 			else
 				printf(".");