sh/mkbuiltins

   1 #!/bin/sh -
   2
   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 # 4. 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 # $FreeBSD: head/bin/sh/mkbuiltins 293118 2016-01-03 21:30:22Z jilles $
  36
  37 temp=`/usr/bin/mktemp -t ka`
  38 havehist=1
  39 if [ "X$1" = "X-h" ]; then
  40         havehist=0
  41         shift
  42 fi
  43 srcdir=$1
  44 havejobs=0
  45 if grep '^#define[       ]*JOBS[         ]*1' $srcdir/shell.h > /dev/null
  46 then    havejobs=1
  47 fi
  48 exec > builtins.c
  49 cat <<\!
  50 /*
  51  * This file was generated by the mkbuiltins program.
  52  */
  53
  54 #include <stdlib.h>
  55 #include "shell.h"
  56 #include "builtins.h"
  57
  58 !
  59 awk '/^[^#]/ {if(('$havejobs' || $2 != "-j") && ('$havehist' || $2 != "-h")) \
  60     print $0}' $srcdir/builtins.def | sed 's/-[hj]//' > $temp
  61 echo 'int (*const builtinfunc[])(int, char **) = {'
  62 awk '/^[^#]/ {  printf "\t%s,\n", $1}' $temp
  63 echo '};
  64
  65 const unsigned char builtincmd[] = {'
  66 awk '{  for (i = 2 ; i <= NF ; i++) {
  67                 if ($i == "-s") {
  68                         spc = 1;
  69                 } else {
  70                         printf "\t\"\\%03o\\%03o%s\"\n", length($i), (spc ? 128 : 0) + NR-1, $i
  71                         spc = 0;
  72                 }
  73         }}' $temp
  74 echo '};'
  75
  76 exec > builtins.h
  77 cat <<\!
  78 /*
  79  * This file was generated by the mkbuiltins program.
  80  */
  81
  82 #include <sys/cdefs.h>
  83 !
  84 tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ < $temp |
  85         awk '{  printf "#define %s %d\n", $1, NR-1}'
  86 echo '
  87 #define BUILTIN_SPECIAL 0x80
  88
  89 extern int (*const builtinfunc[])(int, char **);
  90 extern const unsigned char builtincmd[];
  91 '
  92 awk '{  printf "int %s(int, char **);\n", $1}' $temp
  93 rm -f $temp