xref: /dragonfly/bin/sh/mkbuiltins (revision a361ab31) 
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: head/bin/sh/mkbuiltins 360210 2020-04-22 21:45:43Z jilles $
36
37temp=`mktemp -t ka`
38srcdir=$1
39havejobs=0
40if grep '^#define[	 ]*JOBS[	 ]*1' $srcdir/shell.h > /dev/null
41then	havejobs=1
42fi
43exec > builtins.c
44cat <<\!
45/*
46 * This file was generated by the mkbuiltins program.
47 */
48
49#include <stdlib.h>
50#include "shell.h"
51#include "builtins.h"
52
53!
54awk '/^[^#]/ {if('$havejobs' || $2 != "-j") \
55    print $0}' $srcdir/builtins.def | sed 's/-j//' > $temp
56echo 'int (*const builtinfunc[])(int, char **) = {'
57awk '/^[^#]/ {	printf "\t%s,\n", $1}' $temp
58echo '};
59
60const unsigned char builtincmd[] = {'
61awk '{	for (i = 2 ; i <= NF ; i++) {
62		if ($i == "-s") {
63			spc = 1;
64		} else if ($i == "-n") {
65			# Handled later for builtins.h
66			continue
67		} else {
68			printf "\t\"\\%03o\\%03o%s\"\n", length($i), (spc ? 128 : 0) + NR-1, $i
69			spc = 0;
70		}
71	}}' $temp
72echo '};'
73
74exec > builtins.h
75cat <<\!
76/*
77 * This file was generated by the mkbuiltins program.
78 */
79
80#include <sys/cdefs.h>
81!
82tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ < $temp |
83	awk '{	printf "#define %s %d\n", $1, NR-1}'
84echo '
85#define BUILTIN_SPECIAL 0x80
86
87extern int (*const builtinfunc[])(int, char **);
88extern const unsigned char builtincmd[];
89'
90awk '{	printf "int %s(int, char **);\n", $1}' $temp
91
92# Build safe_builtin_always()
93cat <<EOF
94
95static inline int
96safe_builtin_always(int idx)
97{
98EOF
99awk '
100BEGIN { printed = 0 }
101{
102	for (i = 2 ; i <= NF ; i++) {
103		if ($i == "-s") {
104			continue
105		} else if ($i == "-n") {
106			nofork = 1;
107		} else {
108			if (nofork == 0) {
109				continue
110			}
111			if (printed == 1) {
112				printf " || \n\t    "
113			} else {
114				printf "\tif ("
115			}
116			printf "idx == " toupper($1)
117			printed = 1
118			nofork = 0;
119			# Only need to check each once
120			break
121		}
122	}
123}' $temp
124
125cat << EOF
126)
127		return (1);
128	return(0);
129}
130EOF
131
132rm -f $temp
133