include/ircd_chattr.h

   1 /*
   2  * IRC - Internet Relay Chat, include/ircd_chattr.h
   3  * Copyright (C) 1998 Andrea Cocito
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 1, or (at your option)
   8  * any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program; if not, write to the Free Software
  17  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  18  */
  19
  20 /** @file
  21  * @brief Character attribute definitions and arrays.
  22  * @version $Id: ircd_chattr.h,v 1.3 2004/10/05 02:10:00 entrope Exp $
  23  *
  24  * This character set code is adapted from Nemesi's Tools Library,
  25  * which gives us the prefix NTL_ on these macros.
  26  */
  27
  28 #ifndef INCLUDED_ircd_chattr_h
  29 #define INCLUDED_ircd_chattr_h
  30 #ifndef INCLUDED_limits_h
  31 #include <limits.h>
  32 #define INCLUDED_limits_h
  33 #endif
  34 #ifndef INCLUDED_sys_types_h
  35 #include <sys/types.h>
  36 #define INCLUDED_sys_types_h
  37 #endif
  38
  39 /*
  40  * Character attribute macros
  41  */
  42 #define NTL_ALNUM   0x0001  /**< (NTL_ALPHA | NTL_DIGIT)             */
  43 #define NTL_ALPHA   0x0002  /**< (NTL_LOWER | NTL_UPPER)             */
  44 #define NTL_CNTRL   0x0004  /**< \\000 - \\037 == 0x00 - 0x1F        */
  45 #define NTL_DIGIT   0x0008  /**< 0123456789                          */
  46 #define NTL_GRAPH   0x0010  /**< (NTL_ALNUM | NTL_PUNCT)             */
  47 #define NTL_LOWER   0x0020  /**< abcdefghijklmnopqrstuvwxyz{|}~      */
  48 #define NTL_PRINT   0x0040  /**< (NTL_GRAPH | ' ')                   */
  49 #define NTL_PUNCT   0x0080  /**< !"#$%&'()*+,-./:;<=>?\@_`           */
  50 #define NTL_SPACE   0x0100  /**< \\011\\012\\013\\014\\015\\040      */
  51 #define NTL_UPPER   0x0200  /**< ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\]^     */
  52 #define NTL_IRCCH   0x0400  /**< Channel's names charset             */
  53 #define NTL_IRCCL   0x0800  /**< Force toLower() in ch-name          */
  54 #define NTL_IRCNK   0x1000  /**< Nick names charset, aka isvalid()   */
  55 #define NTL_IRCUI   0x2000  /**< UserIDs charset, IRCHN plus tilde   */
  56 #define NTL_IRCHN   0x4000  /**< Hostnames charset (weak, RFC 1033)  */
  57 #define NTL_IRCIP   0x8000  /**< Numeric IPs charset (DIGIT and .)   */
  58 #define NTL_EOL    0x10000  /**< \\r\\n                              */
  59 #define NTL_KTIME  0x20000  /**< Valid character for a k:line time   */
  60 #define NTL_CHPFX  0x40000  /**< channel prefix char # & +           */
  61 #define NTL_IRCIP6 0x80000  /**< Numeric IPv6 character (hex or colon) */
  62
  63 /*
  64  * Tables used for translation and classification macros
  65  */
  66 /** Array mapping characters to RFC 1459 lower-case versions.
  67  * Yes, the variable name lies about the encoding.
  68  */
  69 extern const char ToLowerTab_8859_1[];
  70 /** Array mapping characters to RFC 1459 upper-case versions.
  71  * Yes, the variable name lies about the encoding.
  72  */
  73 extern const char ToUpperTab_8859_1[];
  74 /** Array mapping characters to attribute bitmasks. */
  75 extern const unsigned int  IRCD_CharAttrTab[];
  76
  77 /*
  78  * Translation macros for channel name case translation
  79  * NOTE: Channel names are supposed to be lower case insensitive for
  80  * ISO 8859-1 character sets.
  81  */
  82 /** Convert a character to its lower-case equivalent. */
  83 #define ToLower(c)        (ToLowerTab_8859_1[(c) - CHAR_MIN])
  84 /** Convert a character to its upper-case equivalent. */
  85 #define ToUpper(c)        (ToUpperTab_8859_1[(c) - CHAR_MIN])
  86
  87 /*
  88  * Character classification macros
  89  * NOTE: The IsUpper and IsLower macros do not apply to the complete
  90  * ISO 8859-1 character set, unlike the ToUpper and ToLower macros above.
  91  * IsUpper and IsLower only apply for comparisons of the US ASCII subset.
  92  */
  93 /** Test whether a character is alphanumeric. */
  94 #define IsAlnum(c)         (IRCD_CharAttrTab[(c) - CHAR_MIN] & NTL_ALNUM)
  95 /** Test whether a character is alphabetic. */
  96 #define IsAlpha(c)         (IRCD_CharAttrTab[(c) - CHAR_MIN] & NTL_ALPHA)
  97 /** Test whether a character is a digit. */
  98 #define IsDigit(c)         (IRCD_CharAttrTab[(c) - CHAR_MIN] & NTL_DIGIT)
  99 /** Test whether a character is lower case. */
 100 #define IsLower(c)         (IRCD_CharAttrTab[(c) - CHAR_MIN] & NTL_LOWER)
 101 /** Test whether a character is whitespace. */
 102 #define IsSpace(c)         (IRCD_CharAttrTab[(c) - CHAR_MIN] & NTL_SPACE)
 103 /** Test whether a character is upper case. */
 104 #define IsUpper(c)         (IRCD_CharAttrTab[(c) - CHAR_MIN] & NTL_UPPER)
 105 /** Test whether a character is a control character. */
 106 #define IsCntrl(c)         (IRCD_CharAttrTab[(c) - CHAR_MIN] & NTL_CNTRL)
 107
 108 /** Test whether a character is valid in a channel name. */
 109 #define IsChannelChar(c)   (IRCD_CharAttrTab[(c) - CHAR_MIN] & NTL_IRCCH)
 110 /** Test whether a character is a lower-case channel name character. */
 111 #define IsChannelLower(c)  (IRCD_CharAttrTab[(c) - CHAR_MIN] & NTL_IRCCL)
 112 /** Test whether a character is a channel prefix. */
 113 #define IsChannelPrefix(c) (IRCD_CharAttrTab[(c) - CHAR_MIN] & NTL_CHPFX)
 114 /** Test whether a character is valid in a nickname. */
 115 #define IsNickChar(c)      (IRCD_CharAttrTab[(c) - CHAR_MIN] & NTL_IRCNK)
 116 /** Test whether a character is valid in a userid. */
 117 #define IsUserChar(c)      (IRCD_CharAttrTab[(c) - CHAR_MIN] & NTL_IRCUI)
 118 /** Test whether a character is valid in a hostname. */
 119 #define IsHostChar(c)      (IRCD_CharAttrTab[(c) - CHAR_MIN] & NTL_IRCHN)
 120 /** Test whether a character is valid in an IPv4 address. */
 121 #define IsIPChar(c)        (IRCD_CharAttrTab[(c) - CHAR_MIN] & NTL_IRCIP)
 122 /** Test whether a character is valid in an IPv6 address. */
 123 #define IsIP6Char(c)       (IRCD_CharAttrTab[(c) - CHAR_MIN] & NTL_IRCIP6)
 124 /** Test whether a character is an end-of-line character. */
 125 #define IsEol(c)           (IRCD_CharAttrTab[(c) - CHAR_MIN] & NTL_EOL)
 126 /** Test whether a character is valid in a K: line expiration string. */
 127 #define IsKTimeChar(c)     (IRCD_CharAttrTab[(c) - CHAR_MIN] & NTL_KTIME)
 128
 129
 130 #endif /* INCLUDED_ircd_chattr_h */