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85 lines
3.6 KiB
C
85 lines
3.6 KiB
C
/* $NetBSD: metachar.c,v 1.10 2021/06/21 18:54:41 rillig Exp $ */
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/*
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* Copyright (c) 2015 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Christos Zoulas.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#if HAVE_NBTOOL_CONFIG_H
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#include "nbtool_config.h"
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#endif
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#if defined(MAKE_NATIVE) || defined(HAVE_NBTOOL_CONFIG_H)
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#include <sys/cdefs.h>
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#endif
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#include "metachar.h"
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MAKE_RCSID("$NetBSD: metachar.c,v 1.10 2021/06/21 18:54:41 rillig Exp $");
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/*
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* The following array is used to make a fast determination of which
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* characters are interpreted specially by the shell. If a command
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* contains any of these characters, it is executed by the shell, not
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* directly by us.
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*/
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const unsigned char _metachar[128] = {
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/* nul soh stx etx eot enq ack bel */
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1, 0, 0, 0, 0, 0, 0, 0,
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/* bs ht nl vt np cr so si */
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0, 0, 1, 0, 0, 0, 0, 0,
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/* dle dc1 dc2 dc3 dc4 nak syn etb */
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0, 0, 0, 0, 0, 0, 0, 0,
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/* can em sub esc fs gs rs us */
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0, 0, 0, 0, 0, 0, 0, 0,
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/* sp ! " # $ % & ' */
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0, 1, 1, 1, 1, 0, 1, 1,
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/* ( ) * + , - . / */
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1, 1, 1, 0, 0, 0, 0, 0,
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/* 0 1 2 3 4 5 6 7 */
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0, 0, 0, 0, 0, 0, 0, 0,
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/* 8 9 : ; < = > ? */
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0, 0, 0, 1, 1, 0, 1, 1,
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/* @ A B C D E F G */
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0, 0, 0, 0, 0, 0, 0, 0,
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/* H I J K L M N O */
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0, 0, 0, 0, 0, 0, 0, 0,
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/* P Q R S T U V W */
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0, 0, 0, 0, 0, 0, 0, 0,
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/* X Y Z [ \ ] ^ _ */
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0, 0, 0, 1, 1, 1, 1, 0,
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/* ` a b c d e f g */
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1, 0, 0, 0, 0, 0, 0, 0,
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/* h i j k l m n o */
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0, 0, 0, 0, 0, 0, 0, 0,
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/* p q r s t u v w */
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0, 0, 0, 0, 0, 0, 0, 0,
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/* x y z { | } ~ del */
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0, 0, 0, 1, 1, 1, 1, 0,
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};
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