bin/sh/mkbuiltins

   1 #!/bin/sh -
   2 #       $NetBSD: mkbuiltins,v 1.21 2004/06/06 07:03:11 christos Exp $
   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 #       @(#)mkbuiltins  8.2 (Berkeley) 5/4/95
  35
  36 havehist=1
  37 if [ x"$1" = x"-h" ]; then
  38         havehist=0
  39         shift
  40 fi
  41
  42 shell=$1
  43 builtins=$2
  44 objdir=$3
  45
  46 havejobs=0
  47 if grep '^#define JOBS[  ]*1' ${shell} > /dev/null
  48 then
  49         havejobs=1
  50 fi
  51
  52 exec <$builtins 3> ${objdir}/builtins.c 4> ${objdir}/builtins.h
  53
  54 echo '/*
  55  * This file was generated by the mkbuiltins program.
  56  */
  57
  58 #include "shell.h"
  59 #include "builtins.h"
  60
  61 const struct builtincmd builtincmd[] = {
  62 ' >&3
  63
  64 echo '/*
  65  * This file was generated by the mkbuiltins program.
  66  */
  67
  68 #include <sys/cdefs.h>
  69
  70 struct builtincmd {
  71       const char *name;
  72       int (*builtin)(int, char **);
  73 };
  74
  75 extern const struct builtincmd builtincmd[];
  76 extern const struct builtincmd splbltincmd[];
  77
  78 ' >&4
  79
  80 specials=
  81
  82 while read line
  83 do
  84         set -- $line
  85         [ -z "$1" ] && continue
  86         case "$1" in
  87         \#if*|\#def*|\#end*)
  88                 echo $line >&3
  89                 echo $line >&4
  90                 continue
  91                 ;;
  92         \#*)
  93                 continue
  94                 ;;
  95         esac
  96
  97         func=$1
  98         shift
  99         [ x"$1" = x'-j' ] && {
 100                 [ $havejobs = 0 ] && continue
 101                 shift
 102         }
 103         [ x"$1" = x'-h' ] && {
 104                 [ $havehist = 0 ] && continue
 105                 shift
 106         }
 107         echo 'int '"$func"'(int, char **);' >&4
 108         while
 109                 [ $# != 0 ] && [ x"$1" != x'#' ]
 110         do
 111                 [ x"$1" = x'-s' ] && {
 112                         specials="$specials $2 $func"
 113                         shift 2
 114                         continue;
 115                 }
 116                 [ x"$1" = x'-u' ] && shift
 117                 echo '  { "'$1'",       '"$func"' },' >&3
 118                 shift
 119         done
 120 done
 121
 122 echo '  { 0, 0 },' >&3
 123 echo '};' >&3
 124 echo >&3
 125 echo 'const struct builtincmd splbltincmd[] = {' >&3
 126
 127 set -- $specials
 128 while
 129         [ $# != 0 ]
 130 do
 131         echo '  { "'$1'",       '"$2"' },' >&3
 132         shift 2
 133 done
 134
 135 echo '  { 0, 0 },' >&3
 136 echo "};" >&3