metachar.c revision 1.6
1/* $NetBSD: metachar.c,v 1.6 2020/08/03 20:43:41 rillig Exp $ */ 2 3/*- 4 * Copyright (c) 2015 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Christos Zoulas. 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 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32#if HAVE_NBTOOL_CONFIG_H 33#include "nbtool_config.h" 34#endif 35 36#if defined(MAKE_NATIVE) || defined(HAVE_NBTOOL_CONFIG_H) 37#include <sys/cdefs.h> 38#endif 39 40#if defined(__RCSID) && !defined(lint) 41__RCSID("$NetBSD: metachar.c,v 1.6 2020/08/03 20:43:41 rillig Exp $"); 42#endif 43 44#include "metachar.h" 45/* 46 * The following array is used to make a fast determination of which 47 * characters are interpreted specially by the shell. If a command 48 * contains any of these characters, it is executed by the shell, not 49 * directly by us. 50 * 51 * perhaps move it to ctype? 52 */ 53 54unsigned char _metachar[128] = { 55/* nul soh stx etx eot enq ack bel */ 56 1, 0, 0, 0, 0, 0, 0, 0, 57/* bs ht nl vt np cr so si */ 58 0, 0, 1, 0, 0, 0, 0, 0, 59/* dle dc1 dc2 dc3 dc4 nak syn etb */ 60 0, 0, 0, 0, 0, 0, 0, 0, 61/* can em sub esc fs gs rs us */ 62 0, 0, 0, 0, 0, 0, 0, 0, 63/* sp ! " # $ % & ' */ 64 0, 1, 1, 1, 1, 0, 1, 1, 65/* ( ) * + , - . / */ 66 1, 1, 1, 0, 0, 0, 0, 0, 67/* 0 1 2 3 4 5 6 7 */ 68 0, 0, 0, 0, 0, 0, 0, 0, 69/* 8 9 : ; < = > ? */ 70 0, 0, 0, 1, 1, 0, 1, 1, 71/* @ A B C D E F G */ 72 0, 0, 0, 0, 0, 0, 0, 0, 73/* H I J K L M N O */ 74 0, 0, 0, 0, 0, 0, 0, 0, 75/* P Q R S T U V W */ 76 0, 0, 0, 0, 0, 0, 0, 0, 77/* X Y Z [ \ ] ^ _ */ 78 0, 0, 0, 1, 1, 1, 1, 0, 79/* ` a b c d e f g */ 80 1, 0, 0, 0, 0, 0, 0, 0, 81/* h i j k l m n o */ 82 0, 0, 0, 0, 0, 0, 0, 0, 83/* p q r s t u v w */ 84 0, 0, 0, 0, 0, 0, 0, 0, 85/* x y z { | } ~ del */ 86 0, 0, 0, 1, 1, 1, 1, 0, 87}; 88 89