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 59 Temple Place, Suite 330, Boston, MA 02111 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 64 #define CTRL(c) ((c) & control_character_mask) 65 #define META(c) ((c) | meta_character_bit) 66 67 #define UNMETA(c) ((c) & (~meta_character_bit)) 68 #define UNCTRL(c) _rl_to_upper(((c)|control_character_bit)) 69 70 #if defined STDC_HEADERS || (!defined (isascii) && !defined (HAVE_ISASCII)) 71 # define IN_CTYPE_DOMAIN(c) 1 72 #else 73 # define IN_CTYPE_DOMAIN(c) isascii(c) 74 #endif 75 76 #if !defined (isxdigit) && !defined (HAVE_ISXDIGIT) 77 # define isxdigit(c) (isdigit((c)) || ((c) >= 'a' && (c) <= 'f') || ((c) >= 'A' && (c) <= 'F')) 78 #endif 79 80 #define NON_NEGATIVE(c) ((unsigned char)(c) == (c)) 81 82 /* Some systems define these; we want our definitions. */ 83 #undef ISPRINT 84 85 #define ISALNUM(c) (IN_CTYPE_DOMAIN (c) && isalnum (c)) 86 #define ISALPHA(c) (IN_CTYPE_DOMAIN (c) && isalpha (c)) 87 #define ISDIGIT(c) (IN_CTYPE_DOMAIN (c) && isdigit (c)) 88 #define ISLOWER(c) (IN_CTYPE_DOMAIN (c) && islower (c)) 89 #define ISPRINT(c) (IN_CTYPE_DOMAIN (c) && isprint (c)) 90 #define ISUPPER(c) (IN_CTYPE_DOMAIN (c) && isupper (c)) 91 #define ISXDIGIT(c) (IN_CTYPE_DOMAIN (c) && isxdigit (c)) 92 93 #define _rl_lowercase_p(c) (NON_NEGATIVE(c) && ISLOWER(c)) 94 #define _rl_uppercase_p(c) (NON_NEGATIVE(c) && ISUPPER(c)) 95 #define _rl_digit_p(c) ((c) >= '0' && (c) <= '9') 96 97 #define _rl_pure_alphabetic(c) (NON_NEGATIVE(c) && ISALPHA(c)) 98 #define ALPHABETIC(c) (NON_NEGATIVE(c) && ISALNUM(c)) 99 100 #ifndef _rl_to_upper 101 # define _rl_to_upper(c) (_rl_lowercase_p(c) ? toupper((unsigned char)c) : (c)) 102 # define _rl_to_lower(c) (_rl_uppercase_p(c) ? tolower((unsigned char)c) : (c)) 103 #endif 104 105 #ifndef _rl_digit_value 106 # define _rl_digit_value(x) ((x) - '0') 107 #endif 108 109 #ifndef _rl_isident 110 # define _rl_isident(c) (ISALNUM(c) || (c) == '_') 111 #endif 112 113 #ifndef ISOCTAL 114 # define ISOCTAL(c) ((c) >= '0' && (c) <= '7') 115 #endif 116 #define OCTVALUE(c) ((c) - '0') 117 118 #define HEXVALUE(c) \ 119 (((c) >= 'a' && (c) <= 'f') \ 120 ? (c)-'a'+10 \ 121 : (c) >= 'A' && (c) <= 'F' ? (c)-'A'+10 : (c)-'0') 122 123 #ifndef NEWLINE 124 #define NEWLINE '\n' 125 #endif 126 127 #ifndef RETURN 128 #define RETURN CTRL('M') 129 #endif 130 131 #ifndef RUBOUT 132 #define RUBOUT 0x7f 133 #endif 134 135 #ifndef TAB 136 #define TAB '\t' 137 #endif 138 139 #ifdef ABORT_CHAR 140 #undef ABORT_CHAR 141 #endif 142 #define ABORT_CHAR CTRL('G') 143 144 #ifdef PAGE 145 #undef PAGE 146 #endif 147 #define PAGE CTRL('L') 148 149 #ifdef SPACE 150 #undef SPACE 151 #endif 152 #define SPACE ' ' /* XXX - was 0x20 */ 153 154 #ifdef ESC 155 #undef ESC 156 #endif 157 #define ESC CTRL('[') 158 159 #endif /* _CHARDEFS_H_ */ 160