1/* Character handling in C locale. 2 3 These functions work like the corresponding functions in <ctype.h>, 4 except that they have the C (POSIX) locale hardwired, whereas the 5 <ctype.h> functions' behaviour depends on the current locale set via 6 setlocale. 7 8 Copyright (C) 2000-2003, 2006 Free Software Foundation, Inc. 9 10This program is free software; you can redistribute it and/or modify 11it under the terms of the GNU General Public License as published by 12the Free Software Foundation; either version 2 of the License, or 13(at your option) any later version. 14 15This program is distributed in the hope that it will be useful, 16but WITHOUT ANY WARRANTY; without even the implied warranty of 17MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 18GNU General Public License for more details. 19 20You should have received a copy of the GNU General Public License 21along with this program; if not, write to the Free Software Foundation, 22Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */ 23 24#ifndef C_CTYPE_H 25#define C_CTYPE_H 26 27#include <stdbool.h> 28 29 30#ifdef __cplusplus 31extern "C" { 32#endif 33 34 35/* The functions defined in this file assume the "C" locale and a character 36 set without diacritics (ASCII-US or EBCDIC-US or something like that). 37 Even if the "C" locale on a particular system is an extension of the ASCII 38 character set (like on BeOS, where it is UTF-8, or on AmigaOS, where it 39 is ISO-8859-1), the functions in this file recognize only the ASCII 40 characters. */ 41 42 43/* Check whether the ASCII optimizations apply. */ 44 45/* ANSI C89 (and ISO C99 5.2.1.3 too) already guarantees that 46 '0', '1', ..., '9' have consecutive integer values. */ 47#define C_CTYPE_CONSECUTIVE_DIGITS 1 48 49#if ('A' <= 'Z') \ 50 && ('A' + 1 == 'B') && ('B' + 1 == 'C') && ('C' + 1 == 'D') \ 51 && ('D' + 1 == 'E') && ('E' + 1 == 'F') && ('F' + 1 == 'G') \ 52 && ('G' + 1 == 'H') && ('H' + 1 == 'I') && ('I' + 1 == 'J') \ 53 && ('J' + 1 == 'K') && ('K' + 1 == 'L') && ('L' + 1 == 'M') \ 54 && ('M' + 1 == 'N') && ('N' + 1 == 'O') && ('O' + 1 == 'P') \ 55 && ('P' + 1 == 'Q') && ('Q' + 1 == 'R') && ('R' + 1 == 'S') \ 56 && ('S' + 1 == 'T') && ('T' + 1 == 'U') && ('U' + 1 == 'V') \ 57 && ('V' + 1 == 'W') && ('W' + 1 == 'X') && ('X' + 1 == 'Y') \ 58 && ('Y' + 1 == 'Z') 59#define C_CTYPE_CONSECUTIVE_UPPERCASE 1 60#endif 61 62#if ('a' <= 'z') \ 63 && ('a' + 1 == 'b') && ('b' + 1 == 'c') && ('c' + 1 == 'd') \ 64 && ('d' + 1 == 'e') && ('e' + 1 == 'f') && ('f' + 1 == 'g') \ 65 && ('g' + 1 == 'h') && ('h' + 1 == 'i') && ('i' + 1 == 'j') \ 66 && ('j' + 1 == 'k') && ('k' + 1 == 'l') && ('l' + 1 == 'm') \ 67 && ('m' + 1 == 'n') && ('n' + 1 == 'o') && ('o' + 1 == 'p') \ 68 && ('p' + 1 == 'q') && ('q' + 1 == 'r') && ('r' + 1 == 's') \ 69 && ('s' + 1 == 't') && ('t' + 1 == 'u') && ('u' + 1 == 'v') \ 70 && ('v' + 1 == 'w') && ('w' + 1 == 'x') && ('x' + 1 == 'y') \ 71 && ('y' + 1 == 'z') 72#define C_CTYPE_CONSECUTIVE_LOWERCASE 1 73#endif 74 75#if (' ' == 32) && ('!' == 33) && ('"' == 34) && ('#' == 35) \ 76 && ('%' == 37) && ('&' == 38) && ('\'' == 39) && ('(' == 40) \ 77 && (')' == 41) && ('*' == 42) && ('+' == 43) && (',' == 44) \ 78 && ('-' == 45) && ('.' == 46) && ('/' == 47) && ('0' == 48) \ 79 && ('1' == 49) && ('2' == 50) && ('3' == 51) && ('4' == 52) \ 80 && ('5' == 53) && ('6' == 54) && ('7' == 55) && ('8' == 56) \ 81 && ('9' == 57) && (':' == 58) && (';' == 59) && ('<' == 60) \ 82 && ('=' == 61) && ('>' == 62) && ('?' == 63) && ('A' == 65) \ 83 && ('B' == 66) && ('C' == 67) && ('D' == 68) && ('E' == 69) \ 84 && ('F' == 70) && ('G' == 71) && ('H' == 72) && ('I' == 73) \ 85 && ('J' == 74) && ('K' == 75) && ('L' == 76) && ('M' == 77) \ 86 && ('N' == 78) && ('O' == 79) && ('P' == 80) && ('Q' == 81) \ 87 && ('R' == 82) && ('S' == 83) && ('T' == 84) && ('U' == 85) \ 88 && ('V' == 86) && ('W' == 87) && ('X' == 88) && ('Y' == 89) \ 89 && ('Z' == 90) && ('[' == 91) && ('\\' == 92) && (']' == 93) \ 90 && ('^' == 94) && ('_' == 95) && ('a' == 97) && ('b' == 98) \ 91 && ('c' == 99) && ('d' == 100) && ('e' == 101) && ('f' == 102) \ 92 && ('g' == 103) && ('h' == 104) && ('i' == 105) && ('j' == 106) \ 93 && ('k' == 107) && ('l' == 108) && ('m' == 109) && ('n' == 110) \ 94 && ('o' == 111) && ('p' == 112) && ('q' == 113) && ('r' == 114) \ 95 && ('s' == 115) && ('t' == 116) && ('u' == 117) && ('v' == 118) \ 96 && ('w' == 119) && ('x' == 120) && ('y' == 121) && ('z' == 122) \ 97 && ('{' == 123) && ('|' == 124) && ('}' == 125) && ('~' == 126) 98/* The character set is ASCII or one of its variants or extensions, not EBCDIC. 99 Testing the value of '\n' and '\r' is not relevant. */ 100#define C_CTYPE_ASCII 1 101#endif 102 103 104/* Function declarations. */ 105 106extern bool c_isascii (int c); /* not locale dependent */ 107 108extern bool c_isalnum (int c); 109extern bool c_isalpha (int c); 110extern bool c_isblank (int c); 111extern bool c_iscntrl (int c); 112extern bool c_isdigit (int c); 113extern bool c_islower (int c); 114extern bool c_isgraph (int c); 115extern bool c_isprint (int c); 116extern bool c_ispunct (int c); 117extern bool c_isspace (int c); 118extern bool c_isupper (int c); 119extern bool c_isxdigit (int c); 120 121extern int c_tolower (int c); 122extern int c_toupper (int c); 123 124 125#if defined __GNUC__ && defined __OPTIMIZE__ && !defined __OPTIMIZE_SIZE__ && !defined NO_C_CTYPE_MACROS 126 127/* ASCII optimizations. */ 128 129#undef c_isascii 130#define c_isascii(c) \ 131 ({ int __c = (c); \ 132 (__c >= 0x00 && __c <= 0x7f); \ 133 }) 134 135#if C_CTYPE_CONSECUTIVE_DIGITS \ 136 && C_CTYPE_CONSECUTIVE_UPPERCASE && C_CTYPE_CONSECUTIVE_LOWERCASE 137#if C_CTYPE_ASCII 138#undef c_isalnum 139#define c_isalnum(c) \ 140 ({ int __c = (c); \ 141 ((__c >= '0' && __c <= '9') \ 142 || ((__c & ~0x20) >= 'A' && (__c & ~0x20) <= 'Z')); \ 143 }) 144#else 145#undef c_isalnum 146#define c_isalnum(c) \ 147 ({ int __c = (c); \ 148 ((__c >= '0' && __c <= '9') \ 149 || (__c >= 'A' && __c <= 'Z') \ 150 || (__c >= 'a' && __c <= 'z')); \ 151 }) 152#endif 153#endif 154 155#if C_CTYPE_CONSECUTIVE_UPPERCASE && C_CTYPE_CONSECUTIVE_LOWERCASE 156#if C_CTYPE_ASCII 157#undef c_isalpha 158#define c_isalpha(c) \ 159 ({ int __c = (c); \ 160 ((__c & ~0x20) >= 'A' && (__c & ~0x20) <= 'Z'); \ 161 }) 162#else 163#undef c_isalpha 164#define c_isalpha(c) \ 165 ({ int __c = (c); \ 166 ((__c >= 'A' && __c <= 'Z') || (__c >= 'a' && __c <= 'z')); \ 167 }) 168#endif 169#endif 170 171#undef c_isblank 172#define c_isblank(c) \ 173 ({ int __c = (c); \ 174 (__c == ' ' || __c == '\t'); \ 175 }) 176 177#if C_CTYPE_ASCII 178#undef c_iscntrl 179#define c_iscntrl(c) \ 180 ({ int __c = (c); \ 181 ((__c & ~0x1f) == 0 || __c == 0x7f); \ 182 }) 183#endif 184 185#if C_CTYPE_CONSECUTIVE_DIGITS 186#undef c_isdigit 187#define c_isdigit(c) \ 188 ({ int __c = (c); \ 189 (__c >= '0' && __c <= '9'); \ 190 }) 191#endif 192 193#if C_CTYPE_CONSECUTIVE_LOWERCASE 194#undef c_islower 195#define c_islower(c) \ 196 ({ int __c = (c); \ 197 (__c >= 'a' && __c <= 'z'); \ 198 }) 199#endif 200 201#if C_CTYPE_ASCII 202#undef c_isgraph 203#define c_isgraph(c) \ 204 ({ int __c = (c); \ 205 (__c >= '!' && __c <= '~'); \ 206 }) 207#endif 208 209#if C_CTYPE_ASCII 210#undef c_isprint 211#define c_isprint(c) \ 212 ({ int __c = (c); \ 213 (__c >= ' ' && __c <= '~'); \ 214 }) 215#endif 216 217#if C_CTYPE_ASCII 218#undef c_ispunct 219#define c_ispunct(c) \ 220 ({ int _c = (c); \ 221 (c_isgraph (_c) && ! c_isalnum (_c)); \ 222 }) 223#endif 224 225#undef c_isspace 226#define c_isspace(c) \ 227 ({ int __c = (c); \ 228 (__c == ' ' || __c == '\t' \ 229 || __c == '\n' || __c == '\v' || __c == '\f' || __c == '\r'); \ 230 }) 231 232#if C_CTYPE_CONSECUTIVE_UPPERCASE 233#undef c_isupper 234#define c_isupper(c) \ 235 ({ int __c = (c); \ 236 (__c >= 'A' && __c <= 'Z'); \ 237 }) 238#endif 239 240#if C_CTYPE_CONSECUTIVE_DIGITS \ 241 && C_CTYPE_CONSECUTIVE_UPPERCASE && C_CTYPE_CONSECUTIVE_LOWERCASE 242#if C_CTYPE_ASCII 243#undef c_isxdigit 244#define c_isxdigit(c) \ 245 ({ int __c = (c); \ 246 ((__c >= '0' && __c <= '9') \ 247 || ((__c & ~0x20) >= 'A' && (__c & ~0x20) <= 'F')); \ 248 }) 249#else 250#undef c_isxdigit 251#define c_isxdigit(c) \ 252 ({ int __c = (c); \ 253 ((__c >= '0' && __c <= '9') \ 254 || (__c >= 'A' && __c <= 'F') \ 255 || (__c >= 'a' && __c <= 'f')); \ 256 }) 257#endif 258#endif 259 260#if C_CTYPE_CONSECUTIVE_UPPERCASE && C_CTYPE_CONSECUTIVE_LOWERCASE 261#undef c_tolower 262#define c_tolower(c) \ 263 ({ int __c = (c); \ 264 (__c >= 'A' && __c <= 'Z' ? __c - 'A' + 'a' : __c); \ 265 }) 266#undef c_toupper 267#define c_toupper(c) \ 268 ({ int __c = (c); \ 269 (__c >= 'a' && __c <= 'z' ? __c - 'a' + 'A' : __c); \ 270 }) 271#endif 272 273#endif /* optimizing for speed */ 274 275 276#ifdef __cplusplus 277} 278#endif 279 280#endif /* C_CTYPE_H */ 281