From a4e8ef72ab523568fa5c1cd356a3c14f8403d2e4 Mon Sep 17 00:00:00 2001
From: Michael Brown
Date: Fri, 3 Jan 2014 02:21:52 +0100
Subject: [libc] Add isprint()

Signed-off-by: Michael Brown <mcb30@ipxe.org>
---
 src/core/debug.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

(limited to 'src/core')

diff --git a/src/core/debug.c b/src/core/debug.c
index 627d5d9a1..2161f9731 100644
--- a/src/core/debug.c
+++ b/src/core/debug.c
@@ -22,6 +22,7 @@ FILE_LICENCE ( GPL2_OR_LATER );
 #include <stdio.h>
 #include <stdint.h>
 #include <stdarg.h>
+#include <ctype.h>
 #include <ipxe/console.h>
 
 /**
@@ -96,9 +97,7 @@ static void dbg_hex_dump_da_row ( unsigned long dispaddr, const void *data,
 			continue;
 		}
 		byte = bytes[i];
-		if ( ( byte < 0x20 ) || ( byte >= 0x7f ) )
-			byte = '.';
-		dbg_printf ( "%c", byte );
+		dbg_printf ( "%c", ( isprint ( byte ) ? byte : '.' ) );
 	}
 	dbg_printf ( "\n" );
 }
-- 
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