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netdissect-ctype.h
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netdissect-ctype.h
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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 */