xref: /freebsd/bin/sh/mkbuiltins (revision 780fb4a2) 
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# 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# $FreeBSD$
36
37temp=`mktemp -t ka`
38havehist=1
39if [ "X$1" = "X-h" ]; then
40	havehist=0
41	shift
42fi
43srcdir=$1
44havejobs=0
45if grep '^#define[	 ]*JOBS[	 ]*1' $srcdir/shell.h > /dev/null
46then	havejobs=1
47fi
48exec > builtins.c
49cat <<\!
50/*
51 * This file was generated by the mkbuiltins program.
52 */
53
54#include <stdlib.h>
55#include "shell.h"
56#include "builtins.h"
57
58!
59awk '/^[^#]/ {if(('$havejobs' || $2 != "-j") && ('$havehist' || $2 != "-h")) \
60    print $0}' $srcdir/builtins.def | sed 's/-[hj]//' > $temp
61echo 'int (*const builtinfunc[])(int, char **) = {'
62awk '/^[^#]/ {	printf "\t%s,\n", $1}' $temp
63echo '};
64
65const unsigned char builtincmd[] = {'
66awk '{	for (i = 2 ; i <= NF ; i++) {
67		if ($i == "-s") {
68			spc = 1;
69		} else if ($i == "-n") {
70			# Handled later for builtins.h
71			continue
72		} else {
73			printf "\t\"\\%03o\\%03o%s\"\n", length($i), (spc ? 128 : 0) + NR-1, $i
74			spc = 0;
75		}
76	}}' $temp
77echo '};'
78
79exec > builtins.h
80cat <<\!
81/*
82 * This file was generated by the mkbuiltins program.
83 */
84
85#include <sys/cdefs.h>
86!
87tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ < $temp |
88	awk '{	printf "#define %s %d\n", $1, NR-1}'
89echo '
90#define BUILTIN_SPECIAL 0x80
91
92extern int (*const builtinfunc[])(int, char **);
93extern const unsigned char builtincmd[];
94'
95awk '{	printf "int %s(int, char **);\n", $1}' $temp
96
97# Build safe_builtin_always()
98cat <<EOF
99
100static inline int
101safe_builtin_always(int idx)
102{
103EOF
104awk '
105BEGIN { printed = 0 }
106{
107	for (i = 2 ; i <= NF ; i++) {
108		if ($i == "-s") {
109			continue
110		} else if ($i == "-n") {
111			nofork = 1;
112		} else {
113			if (nofork == 0) {
114				continue
115			}
116			if (printed == 1) {
117				printf " || \n\t    "
118			} else {
119				printf "\tif ("
120			}
121			printf "idx == " toupper($1)
122			printed = 1
123			nofork = 0;
124			# Only need to check each once
125			break
126		}
127	}
128}' $temp
129
130cat << EOF
131)
132		return (1);
133	return(0);
134}
135EOF
136
137rm -f $temp
138