1#!/bin/sh -
2#	$NetBSD: mkbuiltins,v 1.17 2002/11/24 22:35:41 christos Exp $
3#
4# Copyright (c) 1991, 1993
5#	The Regents of the University of California.  All rights reserved.
6# Copyright (c) 1997-2005
7#	Herbert Xu <herbert@gondor.apana.org.au>.  All rights reserved.
8#
9# This code is derived from software contributed to Berkeley by
10# Kenneth Almquist.
11#
12# Redistribution and use in source and binary forms, with or without
13# modification, are permitted provided that the following conditions
14# are met:
15# 1. Redistributions of source code must retain the above copyright
16#    notice, this list of conditions and the following disclaimer.
17# 2. Redistributions in binary form must reproduce the above copyright
18#    notice, this list of conditions and the following disclaimer in the
19#    documentation and/or other materials provided with the distribution.
20# 3. Neither the name of the University nor the names of its contributors
21#    may be used to endorse or promote products derived from this software
22#    without specific prior written permission.
23#
24# THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27# ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34# SUCH DAMAGE.
35#
36#	@(#)mkbuiltins	8.2 (Berkeley) 5/4/95
37
38tempfile=tempfile
39if ! type tempfile > /dev/null 2>&1 && ! type mktemp > /dev/null 2>&1; then
40	_my_tempfile()
41	{
42		local index=0
43		while test -f "${TMPDIR:-/tmp}/builtin.$$.$index"; do
44			index=`expr $index + 1`
45		done
46
47		touch "${TMPDIR:-/tmp}/builtin.$$.$index"
48		echo "${TMPDIR:-/tmp}/builtin.$$.$index"
49	}
50
51	tempfile="_my_tempfile"
52elif ! type tempfile > /dev/null 2>&1; then
53	tempfile="mktemp ${TMPDIR:-/tmp}/builtin.XXXXXX"
54fi
55
56trap 'rm -f $temp $temp2' EXIT
57temp=$($tempfile)
58temp2=$($tempfile)
59
60builtins=$1
61
62exec > builtins.c
63cat <<\!
64/*
65 * This file was generated by the mkbuiltins program.
66 */
67
68#include "shell.h"
69#include "builtins.h"
70
71!
72< $builtins sed '/^#/d; /^ *$/d' > $temp
73awk '{	printf "int %s(int, char **);\n", $1}' $temp
74echo '
75const struct builtincmd builtincmd[] = {'
76awk '{	for (i = 2 ; i <= NF ; i++) {
77		line = $i "\t" $1
78		if ($i ~ /^-/)
79			line = $(++i) "\t" line
80		print line
81	}}' $temp | LC_ALL= LC_COLLATE=C sort -k 1,1 | tee $temp2 | awk '{
82		opt = ""
83		if (NF > 2) {
84			opt = substr($2, 2)
85			$2 = $3
86		}
87		mask = 0
88		cmd = $2
89		if (opt ~ /n/) { cmd = "NULL" }
90		if (opt ~ /s/) { mask += 1 }
91		if (opt ~ /[su]/) { mask += 2 }
92		if (opt ~ /a/) { mask += 4 }
93		if (opt ~ /w/) { mask += 8 }
94		printf "\t{ \"%s\", %s, %d },\n", $1, cmd, mask
95	}'
96echo '};'
97
98exec > builtins.h
99cat <<\!
100/*
101 * This file was generated by the mkbuiltins program.
102 */
103
104!
105sed 's/	-[a-z]*//' $temp2 | nl -ba -v0 |
106	LC_ALL= LC_COLLATE=C sort -u -k 3,3 |
107	tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ |
108	awk '{	printf "#define %s (builtincmd + %d)\n", $3, $1}'
109printf '\n#define NUMBUILTINS %d\n' $(wc -l < $temp2)
110echo '
111#define BUILTIN_SPECIAL 0x1
112#define BUILTIN_REGULAR 0x2
113#define BUILTIN_ASSIGN 0x4
114#define BUILTIN_WEAK 0x8
115
116struct builtincmd {
117	const char *name;
118	int (*builtin)(int, char **);
119	unsigned flags;
120};
121
122extern const struct builtincmd builtincmd[];'
123