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+/*
+ * Copyright (c) 1988-1997
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Copyright (c) 1998-2012  Michael Richardson <mcr@tcpdump.org>
+ *      The TCPDUMP project
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that: (1) source code distributions
+ * retain the above copyright notice and this paragraph in its entirety, (2)
+ * distributions including binary code include the above copyright notice and
+ * this paragraph in its entirety in the documentation or other materials
+ * provided with the distribution, and (3) all advertising materials mentioning
+ * features or use of this software display the following acknowledgement:
+ * ``This product includes software developed by the University of California,
+ * Lawrence Berkeley Laboratory and its contributors.'' Neither the name of
+ * the University nor the names of its contributors may be used to endorse
+ * or promote products derived from this software without specific prior
+ * written permission.
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
+ */
+
+#ifndef netdissect_ctype_h
+#define netdissect_ctype_h
+
+/*
+ * Locale-independent macros for testing character properties and
+ * stripping the 8th bit from characters.
+ *
+ * Byte values outside the ASCII range are considered unprintable, so
+ * both ND_ASCII_ISPRINT() and ND_ASCII_ISGRAPH() return "false" for them.
+ *
+ * Assumed to be handed a value between 0 and 255, i.e. don't hand them
+ * a char, as those might be in the range -128 to 127.
+ */
+#define ND_ISASCII(c)		(!((c) & 0x80))	/* value is an ASCII code point */
+#define ND_ASCII_ISPRINT(c)	((c) >= 0x20 && (c) <= 0x7E)
+#define ND_ASCII_ISGRAPH(c)	((c) > 0x20 && (c) <= 0x7E)
+#define ND_ASCII_ISDIGIT(c)	((c) >= '0' && (c) <= '9')
+#define ND_TOASCII(c)		((c) & 0x7F)
+
+/*
+ * Locale-independent macros for converting to upper or lower case.
+ *
+ * Byte values outside the ASCII range are not converted.  Byte values
+ * *in* the ASCII range are converted to byte values in the ASCII range;
+ * in particular, 'i' is upper-cased to 'I" and 'I' is lower-cased to 'i',
+ * even in Turkish locales.
+ */
+#define ND_ASCII_TOLOWER(c)	(((c) >= 'A' && (c) <= 'Z') ? (c) - 'A' + 'a' : (c))
+#define ND_ASCII_TOUPPER(c)	(((c) >= 'a' && (c) <= 'z') ? (c) - 'a' + 'A' : (c))
+
+#endif /* netdissect-ctype.h */
+