utils: Add sanitize_ascii()

This can be used to ensure all characters on an ascii array are printable. Signed-off-by: Timo Kokkonen <kaapeli@itanic.dy.fi>
CodeMonkeySteve · May 5, 2011 · 1e0eeb1 · 1e0eeb1
1 parent 3b1882a
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diff --git a/utils.c b/utils.c
@@ -34,3 +34,12 @@ void print_ascii(const unsigned char *data, int len)
 
 	printf("\n");
 }
+
+void sanitize_ascii(unsigned char *data, int len)
+{
+	int i;
+
+	for (i = 0; i < len; i++)
+		data[i] = is_printable(data[i]) ? data[i] : '.';
+	data[i] = 0;
+}
diff --git a/utils.h b/utils.h
@@ -21,5 +21,6 @@ extern int trace_level;
 int datalen(const unsigned char *data);
 void print_hex(const unsigned char *data, int len);
 void print_ascii(const unsigned char *data, int len);
+void sanitize_ascii(unsigned char *data, int len);
 
 #endif