usr.bin/make/metachar.c

   1 /*      $NetBSD: metachar.c,v 1.5 2015/06/19 08:03:35 mlelstv 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 1.5 2015/06/19 08:03:35 mlelstv 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
  54 unsigned 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