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/bin/sh/mkbuiltins

https://bitbucket.org/freebsd/freebsd-head/
Shell | 98 lines | 54 code | 6 blank | 38 comment | 2 complexity | 7cbed72de7bc7ef938283919c591149b MD5 | raw file
 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# $FreeBSD$
36
37temp=`/usr/bin/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}' $temp
63echo '};
64
65const struct builtincmd builtincmd[] = {'
66awk '{	for (i = 2 ; i <= NF ; i++) {
67		if ($i == "-s") {
68			spc = 1;
69		} else {
70			printf "\t{ \"%s\", %d, %d },\n",  $i, NR-1, spc
71			spc = 0;
72		}
73	}}' $temp
74echo '	{ NULL, 0, 0 }
75};'
76
77exec > builtins.h
78cat <<\!
79/*
80 * This file was generated by the mkbuiltins program.
81 */
82
83#include <sys/cdefs.h>
84!
85tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ < $temp |
86	awk '{	printf "#define %s %d\n", $1, NR-1}'
87echo '
88struct builtincmd {
89      const char *name;
90      int code;
91      int special;
92};
93
94extern int (*const builtinfunc[])(int, char **);
95extern const struct builtincmd builtincmd[];
96'
97awk '{	printf "int %s(int, char **);\n", $1}' $temp
98rm -f $temp