1 /* chardefs.h -- Character definitions for readline. */ 2 3 /* Copyright (C) 1994 Free Software Foundation, Inc. 4 5 This file is part of the GNU Readline Library, a library for 6 reading lines of text with interactive input and history editing. 7 8 The GNU Readline Library is free software; you can redistribute it 9 and/or modify it under the terms of the GNU General Public License 10 as published by the Free Software Foundation; either version 2, or 11 (at your option) any later version. 12 13 The GNU Readline Library is distributed in the hope that it will be 14 useful, but WITHOUT ANY WARRANTY; without even the implied warranty 15 of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 16 GNU General Public License for more details. 17 18 The GNU General Public License is often shipped with GNU software, and 19 is generally kept in a file called COPYING or LICENSE. If you do not 20 have a copy of the license, write to the Free Software Foundation, 21 51 Franklin Street, Fifth Floor, Boston, MA 02110-1335 USA. */ 22 23 #ifndef _CHARDEFS_H_ 24 #define _CHARDEFS_H_ 25 26 #include <ctype.h> 27 28 #if defined (HAVE_CONFIG_H) 29 # if defined (HAVE_STRING_H) 30 # if ! defined (STDC_HEADERS) && defined (HAVE_MEMORY_H) 31 # include <memory.h> 32 # endif 33 # include <string.h> 34 # endif /* HAVE_STRING_H */ 35 # if defined (HAVE_STRINGS_H) 36 # include <strings.h> 37 # endif /* HAVE_STRINGS_H */ 38 #else 39 # include <string.h> 40 #endif /* !HAVE_CONFIG_H */ 41 42 #ifndef whitespace 43 #define whitespace(c) (((c) == ' ') || ((c) == '\t')) 44 #endif 45 46 #ifdef CTRL 47 # undef CTRL 48 #endif 49 #ifdef UNCTRL 50 # undef UNCTRL 51 #endif 52 53 /* Some character stuff. */ 54 #define control_character_threshold 0x020 /* Smaller than this is control. */ 55 #define control_character_mask 0x1f /* 0x20 - 1 */ 56 #define meta_character_threshold 0x07f /* Larger than this is Meta. */ 57 #define control_character_bit 0x40 /* 0x000000, must be off. */ 58 #define meta_character_bit 0x080 /* x0000000, must be on. */ 59 #define largest_char 255 /* Largest character value. */ 60 61 #define CTRL_CHAR(c) ((c) < control_character_threshold && (((c) & 0x80) == 0)) 62 #define META_CHAR(c) ((c) > meta_character_threshold && (c) <= largest_char) 63 #define META_CHAR_FOR_UCHAR(c) ((c) > meta_character_threshold) 64 65 #define CTRL(c) ((c) & control_character_mask) 66 #define META(c) ((c) | meta_character_bit) 67 68 #define UNMETA(c) ((c) & (~meta_character_bit)) 69 #define UNCTRL(c) _rl_to_upper(((c)|control_character_bit)) 70 71 #if defined STDC_HEADERS || (!defined (isascii) && !defined (HAVE_ISASCII)) 72 # define IN_CTYPE_DOMAIN(c) 1 73 #else 74 # define IN_CTYPE_DOMAIN(c) isascii(c) 75 #endif 76 77 #if !defined (isxdigit) && !defined (HAVE_ISXDIGIT) 78 # define isxdigit(c) (isdigit((c)) || ((c) >= 'a' && (c) <= 'f') || ((c) >= 'A' && (c) <= 'F')) 79 #endif 80 81 #if defined (CTYPE_NON_ASCII) 82 # define NON_NEGATIVE(c) 1 83 #else 84 # define NON_NEGATIVE(c) ((unsigned char)(c) == (c)) 85 #endif 86 87 /* Some systems define these; we want our definitions. */ 88 #undef ISPRINT 89 90 /* Beware: these only work with single-byte ASCII characters. */ 91 92 #define ISALNUM(c) (IN_CTYPE_DOMAIN (c) && isalnum (c)) 93 #define ISALPHA(c) (IN_CTYPE_DOMAIN (c) && isalpha (c)) 94 #define ISDIGIT(c) (IN_CTYPE_DOMAIN (c) && isdigit (c)) 95 #define ISLOWER(c) (IN_CTYPE_DOMAIN (c) && islower (c)) 96 #define ISPRINT(c) (IN_CTYPE_DOMAIN (c) && isprint (c)) 97 #define ISUPPER(c) (IN_CTYPE_DOMAIN (c) && isupper (c)) 98 #define ISXDIGIT(c) (IN_CTYPE_DOMAIN (c) && isxdigit (c)) 99 100 #define _rl_lowercase_p(c) (NON_NEGATIVE(c) && ISLOWER(c)) 101 #define _rl_uppercase_p(c) (NON_NEGATIVE(c) && ISUPPER(c)) 102 #define _rl_digit_p(c) ((c) >= '0' && (c) <= '9') 103 104 #define _rl_pure_alphabetic(c) (NON_NEGATIVE(c) && ISALPHA(c)) 105 #define ALPHABETIC(c) (NON_NEGATIVE(c) && ISALNUM(c)) 106 107 #ifndef _rl_to_upper 108 # define _rl_to_upper(c) (_rl_lowercase_p(c) ? toupper((unsigned char)c) : (c)) 109 # define _rl_to_lower(c) (_rl_uppercase_p(c) ? tolower((unsigned char)c) : (c)) 110 #endif 111 112 #ifndef _rl_digit_value 113 # define _rl_digit_value(x) ((x) - '0') 114 #endif 115 116 #ifndef _rl_isident 117 # define _rl_isident(c) (ISALNUM(c) || (c) == '_') 118 #endif 119 120 #ifndef ISOCTAL 121 # define ISOCTAL(c) ((c) >= '0' && (c) <= '7') 122 #endif 123 #define OCTVALUE(c) ((c) - '0') 124 125 #define HEXVALUE(c) \ 126 (((c) >= 'a' && (c) <= 'f') \ 127 ? (c)-'a'+10 \ 128 : (c) >= 'A' && (c) <= 'F' ? (c)-'A'+10 : (c)-'0') 129 130 #ifndef NEWLINE 131 #define NEWLINE '\n' 132 #endif 133 134 #ifndef RETURN 135 #define RETURN CTRL('M') 136 #endif 137 138 #ifndef RUBOUT 139 #define RUBOUT 0x7f 140 #endif 141 142 #ifndef TAB 143 #define TAB '\t' 144 #endif 145 146 #ifdef ABORT_CHAR 147 #undef ABORT_CHAR 148 #endif 149 #define ABORT_CHAR CTRL('G') 150 151 #ifdef PAGE 152 #undef PAGE 153 #endif 154 #define PAGE CTRL('L') 155 156 #ifdef SPACE 157 #undef SPACE 158 #endif 159 #define SPACE ' ' /* XXX - was 0x20 */ 160 161 #ifdef ESC 162 #undef ESC 163 #endif 164 #define ESC CTRL('[') 165 166 #endif /* _CHARDEFS_H_ */ 167