1 /* chardefs.h -- Character definitions for readline. */ 2 3 /* Copyright (C) 1994-2015 Free Software Foundation, Inc. 4 5 This file is part of the GNU Readline Library (Readline), a library 6 for reading lines of text with interactive input and history editing. 7 8 Readline is free software: you can redistribute it and/or modify 9 it under the terms of the GNU General Public License as published by 10 the Free Software Foundation, either version 3 of the License, or 11 (at your option) any later version. 12 13 Readline is distributed in the hope that it will be useful, 14 but WITHOUT ANY WARRANTY; without even the implied warranty of 15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 16 GNU General Public License for more details. 17 18 You should have received a copy of the GNU General Public License 19 along with Readline. If not, see <http://www.gnu.org/licenses/>. 20 */ 21 22 #ifndef _CHARDEFS_H_ 23 #define _CHARDEFS_H_ 24 25 #include <ctype.h> 26 27 #if defined (HAVE_CONFIG_H) 28 # if defined (HAVE_STRING_H) 29 # if ! defined (STDC_HEADERS) && defined (HAVE_MEMORY_H) 30 # include <memory.h> 31 # endif 32 # include <string.h> 33 # endif /* HAVE_STRING_H */ 34 # if defined (HAVE_STRINGS_H) 35 # include <strings.h> 36 # endif /* HAVE_STRINGS_H */ 37 #else 38 # include <string.h> 39 #endif /* !HAVE_CONFIG_H */ 40 41 #ifndef whitespace 42 #define whitespace(c) (((c) == ' ') || ((c) == '\t')) 43 #endif 44 45 #ifdef CTRL 46 # undef CTRL 47 #endif 48 #ifdef UNCTRL 49 # undef UNCTRL 50 #endif 51 52 /* Some character stuff. */ 53 #define control_character_threshold 0x020 /* Smaller than this is control. */ 54 #define control_character_mask 0x1f /* 0x20 - 1 */ 55 #define meta_character_threshold 0x07f /* Larger than this is Meta. */ 56 #define control_character_bit 0x40 /* 0x000000, must be off. */ 57 #define meta_character_bit 0x080 /* x0000000, must be on. */ 58 #define largest_char 255 /* Largest character value. */ 59 60 #define CTRL_CHAR(c) ((c) < control_character_threshold && (((c) & 0x80) == 0)) 61 #define META_CHAR(c) ((c) > meta_character_threshold && (c) <= largest_char) 62 63 #define CTRL(c) ((c) & control_character_mask) 64 #define META(c) ((c) | meta_character_bit) 65 66 #define UNMETA(c) ((c) & (~meta_character_bit)) 67 #define UNCTRL(c) _rl_to_upper(((c)|control_character_bit)) 68 69 #if defined STDC_HEADERS || (!defined (isascii) && !defined (HAVE_ISASCII)) 70 # define IN_CTYPE_DOMAIN(c) 1 71 #else 72 # define IN_CTYPE_DOMAIN(c) isascii(c) 73 #endif 74 75 #if !defined (isxdigit) && !defined (HAVE_ISXDIGIT) && !defined (__cplusplus) 76 # define isxdigit(c) (isdigit((unsigned char)(c)) || ((c) >= 'a' && (c) <= 'f') || ((c) >= 'A' && (c) <= 'F')) 77 #endif 78 79 #if defined (CTYPE_NON_ASCII) 80 # define NON_NEGATIVE(c) 1 81 #else 82 # define NON_NEGATIVE(c) ((unsigned char)(c) == (c)) 83 #endif 84 85 /* Some systems define these; we want our definitions. */ 86 #undef ISPRINT 87 88 /* Beware: these only work with single-byte ASCII characters. */ 89 90 #define ISALNUM(c) (IN_CTYPE_DOMAIN (c) && isalnum ((unsigned char)c)) 91 #define ISALPHA(c) (IN_CTYPE_DOMAIN (c) && isalpha ((unsigned char)c)) 92 #define ISDIGIT(c) (IN_CTYPE_DOMAIN (c) && isdigit ((unsigned char)c)) 93 #define ISLOWER(c) (IN_CTYPE_DOMAIN (c) && islower ((unsigned char)c)) 94 #define ISPRINT(c) (IN_CTYPE_DOMAIN (c) && isprint ((unsigned char)c)) 95 #define ISUPPER(c) (IN_CTYPE_DOMAIN (c) && isupper ((unsigned char)c)) 96 #define ISXDIGIT(c) (IN_CTYPE_DOMAIN (c) && isxdigit ((unsigned char)c)) 97 98 #define _rl_lowercase_p(c) (NON_NEGATIVE(c) && ISLOWER(c)) 99 #define _rl_uppercase_p(c) (NON_NEGATIVE(c) && ISUPPER(c)) 100 #define _rl_digit_p(c) ((c) >= '0' && (c) <= '9') 101 102 #define _rl_pure_alphabetic(c) (NON_NEGATIVE(c) && ISALPHA(c)) 103 #define ALPHABETIC(c) (NON_NEGATIVE(c) && ISALNUM(c)) 104 105 #ifndef _rl_to_upper 106 # define _rl_to_upper(c) (_rl_lowercase_p(c) ? toupper((unsigned char)c) : (c)) 107 # define _rl_to_lower(c) (_rl_uppercase_p(c) ? tolower((unsigned char)c) : (c)) 108 #endif 109 110 #ifndef _rl_digit_value 111 # define _rl_digit_value(x) ((x) - '0') 112 #endif 113 114 #ifndef _rl_isident 115 # define _rl_isident(c) (ISALNUM(c) || (c) == '_') 116 #endif 117 118 #ifndef ISOCTAL 119 # define ISOCTAL(c) ((c) >= '0' && (c) <= '7') 120 #endif 121 #define OCTVALUE(c) ((c) - '0') 122 123 #define HEXVALUE(c) \ 124 (((c) >= 'a' && (c) <= 'f') \ 125 ? (c)-'a'+10 \ 126 : (c) >= 'A' && (c) <= 'F' ? (c)-'A'+10 : (c)-'0') 127 128 #ifndef NEWLINE 129 #define NEWLINE '\n' 130 #endif 131 132 #ifndef RETURN 133 #define RETURN CTRL('M') 134 #endif 135 136 #ifndef RUBOUT 137 #define RUBOUT 0x7f 138 #endif 139 140 #ifndef TAB 141 #define TAB '\t' 142 #endif 143 144 #ifdef ABORT_CHAR 145 #undef ABORT_CHAR 146 #endif 147 #define ABORT_CHAR CTRL('G') 148 149 #ifdef PAGE 150 #undef PAGE 151 #endif 152 #define PAGE CTRL('L') 153 154 #ifdef SPACE 155 #undef SPACE 156 #endif 157 #define SPACE ' ' /* XXX - was 0x20 */ 158 159 #ifdef ESC 160 #undef ESC 161 #endif 162 #define ESC CTRL('[') 163 164 #endif /* _CHARDEFS_H_ */ 165