1 /* 2 * Copyright (c) 1988-1997 3 * The Regents of the University of California. All rights reserved. 4 * 5 * Copyright (c) 1998-2012 Michael Richardson <mcr@tcpdump.org> 6 * The TCPDUMP project 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that: (1) source code distributions 10 * retain the above copyright notice and this paragraph in its entirety, (2) 11 * distributions including binary code include the above copyright notice and 12 * this paragraph in its entirety in the documentation or other materials 13 * provided with the distribution, and (3) all advertising materials mentioning 14 * features or use of this software display the following acknowledgement: 15 * ``This product includes software developed by the University of California, 16 * Lawrence Berkeley Laboratory and its contributors.'' Neither the name of 17 * the University nor the names of its contributors may be used to endorse 18 * or promote products derived from this software without specific prior 19 * written permission. 20 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED 21 * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF 22 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. 23 */ 24 25 #ifndef netdissect_ctype_h 26 #define netdissect_ctype_h 27 28 /* 29 * Locale-independent macros for testing character properties and 30 * stripping the 8th bit from characters. 31 * 32 * Byte values outside the ASCII range are considered unprintable, so 33 * both ND_ASCII_ISPRINT() and ND_ASCII_ISGRAPH() return "false" for them. 34 * 35 * Assumed to be handed a value between 0 and 255, i.e. don't hand them 36 * a char, as those might be in the range -128 to 127. 37 */ 38 #define ND_ISASCII(c) (!((c) & 0x80)) /* value is an ASCII code point */ 39 #define ND_ASCII_ISPRINT(c) ((c) >= 0x20 && (c) <= 0x7E) 40 #define ND_ASCII_ISGRAPH(c) ((c) > 0x20 && (c) <= 0x7E) 41 #define ND_ASCII_ISDIGIT(c) ((c) >= '0' && (c) <= '9') 42 #define ND_TOASCII(c) ((c) & 0x7F) 43 44 /* 45 * Locale-independent macros for coverting to upper or lower case. 46 * 47 * Byte values outside the ASCII range are not converted. Byte values 48 * *in* the ASCII range are converted to byte values in the ASCII range; 49 * in particular, 'i' is upper-cased to 'I" and 'I' is lower-cased to 'i', 50 * even in Turkish locales. 51 */ 52 #define ND_ASCII_TOLOWER(c) (((c) >= 'A' && (c) <= 'Z') ? (c) - 'A' + 'a' : (c)) 53 #define ND_ASCII_TOUPPER(c) (((c) >= 'a' && (c) <= 'z') ? (c) - 'a' + 'A' : (c)) 54 55 #endif /* netdissect-ctype.h */ 56 57