1 /* $NetBSD: syntax.h,v 1.9 2017/08/21 13:20:49 kre Exp $ */ 2 3 /*- 4 * Copyright (c) 1991, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * This code is derived from software contributed to Berkeley by 8 * Kenneth Almquist. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. Neither the name of the University nor the names of its contributors 19 * may be used to endorse or promote products derived from this software 20 * without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 */ 34 35 #include <sys/cdefs.h> 36 #include <ctype.h> 37 38 /* Syntax classes */ 39 #define CWORD 0 /* character is nothing special */ 40 #define CNL 1 /* newline character */ 41 #define CBACK 2 /* a backslash character */ 42 #define CSQUOTE 3 /* single quote */ 43 #define CDQUOTE 4 /* double quote */ 44 #define CBQUOTE 5 /* backwards single quote */ 45 #define CVAR 6 /* a dollar sign */ 46 #define CENDVAR 7 /* a '}' character */ 47 #define CLP 8 /* a left paren in arithmetic */ 48 #define CRP 9 /* a right paren in arithmetic */ 49 #define CEOF 10 /* end of file */ 50 #define CCTL 11 /* like CWORD, except it must be escaped */ 51 #define CSPCL 12 /* these terminate a word */ 52 #define CSBACK 13 /* a backslash in a single quote syntax */ 53 54 /* Syntax classes for is_ functions */ 55 #define ISDIGIT 01 /* a digit */ 56 #define ISUPPER 02 /* an upper case letter */ 57 #define ISLOWER 04 /* a lower case letter */ 58 #define ISUNDER 010 /* an underscore */ 59 #define ISSPECL 020 /* the name of a special parameter */ 60 #define ISSPACE 040 /* a white space character */ 61 62 #define PEOF (CHAR_MIN - 1) 63 #define SYNBASE (-PEOF) 64 65 66 #define BASESYNTAX (basesyntax + SYNBASE) 67 #define DQSYNTAX (dqsyntax + SYNBASE) 68 #define SQSYNTAX (sqsyntax + SYNBASE) 69 #define ARISYNTAX (arisyntax + SYNBASE) 70 71 /* These defines assume that the digits are contiguous (which is guaranteed) */ 72 #define is_digit(c) ((unsigned)((c) - '0') <= 9) 73 #define sh_ctype(c) (is_type+SYNBASE)[(int)(c)] 74 #define is_upper(c) (sh_ctype(c) & ISUPPER) 75 #define is_lower(c) (sh_ctype(c) & ISLOWER) 76 #define is_alpha(c) (sh_ctype(c) & (ISUPPER|ISLOWER)) 77 #define is_name(c) (sh_ctype(c) & (ISUPPER|ISLOWER|ISUNDER)) 78 #define is_in_name(c) (sh_ctype(c) & (ISUPPER|ISLOWER|ISUNDER|ISDIGIT)) 79 #define is_special(c) (sh_ctype(c) & (ISSPECL|ISDIGIT)) 80 #define is_space(c) (sh_ctype(c) & ISSPACE) 81 #define digit_val(c) ((c) - '0') 82 83 extern const char basesyntax[]; 84 extern const char dqsyntax[]; 85 extern const char sqsyntax[]; 86 extern const char arisyntax[]; 87 extern const char is_type[]; 88