1 /* $OpenBSD: isctype.c,v 1.12 2015/09/13 11:38:08 guenther Exp $ */ 2 /* 3 * Copyright (c) 1989 The Regents of the University of California. 4 * All rights reserved. 5 * (c) UNIX System Laboratories, Inc. 6 * All or some portions of this file are derived from material licensed 7 * to the University of California by American Telephone and Telegraph 8 * Co. or Unix System Laboratories, Inc. and are reproduced herein with 9 * the permission of UNIX System Laboratories, Inc. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 3. Neither the name of the University nor the names of its contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 */ 35 36 #define _ANSI_LIBRARY 37 #include <ctype.h> 38 #include <stdio.h> 39 40 #undef isalnum 41 int 42 isalnum(int c) 43 { 44 return (c == EOF ? 0 : ((_ctype_ + 1)[(unsigned char)c] & (_U|_L|_N))); 45 } 46 DEF_STRONG(isalnum); 47 48 #undef isalpha 49 int 50 isalpha(int c) 51 { 52 return (c == EOF ? 0 : ((_ctype_ + 1)[(unsigned char)c] & (_U|_L))); 53 } 54 DEF_STRONG(isalpha); 55 56 #undef isblank 57 int 58 isblank(int c) 59 { 60 return (c == ' ' || c == '\t'); 61 } 62 DEF_STRONG(isblank); 63 64 #undef iscntrl 65 int 66 iscntrl(int c) 67 { 68 return (c == EOF ? 0 : ((_ctype_ + 1)[(unsigned char)c] & _C)); 69 } 70 DEF_STRONG(iscntrl); 71 72 #undef isdigit 73 int 74 isdigit(int c) 75 { 76 return (c == EOF ? 0 : ((_ctype_ + 1)[(unsigned char)c] & _N)); 77 } 78 DEF_STRONG(isdigit); 79 80 #undef isgraph 81 int 82 isgraph(int c) 83 { 84 return (c == EOF ? 0 : ((_ctype_ + 1)[(unsigned char)c] & (_P|_U|_L|_N))); 85 } 86 DEF_STRONG(isgraph); 87 88 #undef islower 89 int 90 islower(int c) 91 { 92 return (c == EOF ? 0 : ((_ctype_ + 1)[(unsigned char)c] & _L)); 93 } 94 DEF_STRONG(islower); 95 96 #undef isprint 97 int 98 isprint(int c) 99 { 100 return (c == EOF ? 0 : ((_ctype_ + 1)[(unsigned char)c] & (_P|_U|_L|_N|_B))); 101 } 102 DEF_STRONG(isprint); 103 104 #undef ispunct 105 int 106 ispunct(int c) 107 { 108 return (c == EOF ? 0 : ((_ctype_ + 1)[(unsigned char)c] & _P)); 109 } 110 DEF_STRONG(ispunct); 111 112 #undef isspace 113 int 114 isspace(int c) 115 { 116 return (c == EOF ? 0 : ((_ctype_ + 1)[(unsigned char)c] & _S)); 117 } 118 DEF_STRONG(isspace); 119 120 #undef isupper 121 int 122 isupper(int c) 123 { 124 return (c == EOF ? 0 : ((_ctype_ + 1)[(unsigned char)c] & _U)); 125 } 126 DEF_STRONG(isupper); 127 128 #undef isxdigit 129 int 130 isxdigit(int c) 131 { 132 return (c == EOF ? 0 : ((_ctype_ + 1)[(unsigned char)c] & (_N|_X))); 133 } 134 DEF_STRONG(isxdigit); 135 136 #undef isascii 137 int 138 isascii(int c) 139 { 140 return ((unsigned int)c <= 0177); 141 } 142 DEF_WEAK(isascii); 143 144 #undef toascii 145 int 146 toascii(int c) 147 { 148 return (c & 0177); 149 } 150 151 #undef _toupper 152 int 153 _toupper(int c) 154 { 155 return (c - 'a' + 'A'); 156 } 157 158 #undef _tolower 159 int 160 _tolower(int c) 161 { 162 return (c - 'A' + 'a'); 163 } 164