metachar.c revision 1.1 
1/*	$NetBSD: metachar.c,v 1.1 2015/06/17 15:34:55 christos 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#include <sys/cdefs.h>
32__RCSID("$NetBSD: metachar.c,v 1.1 2015/06/17 15:34:55 christos Exp $");
33
34#include "metachar.h"
35/*
36 * The following array is used to make a fast determination of which
37 * characters are interpreted specially by the shell.  If a command
38 * contains any of these characters, it is executed by the shell, not
39 * directly by us.
40 *
41 * perhaps move it to ctype?
42 */
43
44unsigned char _metachar[128] = {
45//    nul   soh   stx   etx   eot   enq   ack   bel
46	1,    0,    0,    0,    0,    0,    0,    0,
47//     bs    ht    nl    vt    np    cr    so    si
48	0,    1,    1,    0,	0,    0,    0,    0,
49//    dle   dc1   dc2   dc3   dc4   nak   syn   etb
50	0,    0,    0,    0,    0,    0,    0,    0,
51//    can    em   sub   esc    fs    gs    rs    us
52	0,    0,    0,    0,    0,    0,    0,    0,
53//     sp     !     "     #     $     %     &     '
54	1,    1,    1,    1,    1,    0,    1,    1,
55//      (     )     *     +     ,     -     .     /
56	1,    1,    1,    0,    0,    0,    0,    0,
57//      0     1     2     3     4     5     6     7
58	0,    0,    0,    0,    0,    0,    0,    0,
59//      8     9     :     ;     <     =     >     ?
60	0,    0,    0,    1,    1,    0,    1,    1,
61//      @     A     B     C     D     E     F     G
62	0,    0,    0,    0,    0,    0,    0,    0,
63//      H     I     J     K     L     M     N     O
64	0,    0,    0,    0,    0,    0,    0,    0,
65//      P     Q     R     S     T     U     V     W
66	0,    0,    0,    0,    0,    0,    0,    0,
67//      X     Y     Z     [     \     ]     ^     _
68	0,    0,    0,    1,    1,    1,    1,    0,
69//      `     a     b     c     d     e     f     g
70	1,    0,    0,    0,    0,    0,    0,    0,
71//      h     i     j     k     l     m     n     o
72	0,    0,    0,    0,    0,    0,    0,    0,
73//      p     q     r     s     t     u     v     w
74	0,    0,    0,    0,    0,    0,    0,    0,
75//      x     y     z     {     |     }     ~   del
76	0,    0,    0,    1,    1,    1,    1,    0,
77};
78