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
34temp=`mktemp -t ka.XXXXXX`
35srcdir=$1
36havejobs=0
37if grep '^#define[ ]*JOBS[ ]*1' $srcdir/shell.h > /dev/null
38then havejobs=1
39fi
40
41feature_histedit=0
42feature_local=1
43feature_let=1
44feature_ulimit=1
45feature_setvar=1
46feature_wordexp=1
47feature_easter=1
48
49if [ -f ../../../scripts/mk/config.kv ]; then
50 . ../../../scripts/mk/config.kv
51 feature_histedit=$FEATURE_SH_HISTEDIT
52 feature_local=$FEATURE_SH_LOCAL
53 feature_let=$FEATURE_SH_LET
54 feature_ulimit=$FEATURE_SH_ULIMIT
55 feature_setvar=$FEATURE_SH_SETVAR
56 feature_wordexp=$FEATURE_SH_WORDEXP
57 feature_easter=$FEATURE_SH_EASTER
58fi
59
60exec > builtins.c
61cat <<\!
62/*
63 * This file was generated by the mkbuiltins program.
64 */
65
66#include <stdlib.h>
67#include "shell.h"
68#include "builtins.h"
69
70!
71awk '/^[^#]/ {
72 if ($0 ~ /#FEATURE_SH_HISTEDIT/ && '$feature_histedit' != 1) next;
73 if ($0 ~ /#FEATURE_SH_LOCAL/ && '$feature_local' != 1) next;
74 if ($0 ~ /#FEATURE_SH_LET/ && '$feature_let' != 1) next;
75 if ($0 ~ /#FEATURE_SH_ULIMIT/ && '$feature_ulimit' != 1) next;
76 if ($0 ~ /#FEATURE_SH_SETVAR/ && '$feature_setvar' != 1) next;
77 if ($0 ~ /#FEATURE_SH_WORDEXP/ && '$feature_wordexp' != 1) next;
78 if ($0 ~ /#FEATURE_SH_EASTER/ && '$feature_easter' != 1) next;
79
80 if ('$havejobs' || $2 != "-j") {
81 sub(/#[A-Z0-9_]*/, "");
82 print $0
83 }
84}' $srcdir/builtins.def | sed 's/-j//' > $temp
85echo 'int (*const builtinfunc[])(int, char **) = {'
86awk '/^[^#]/ { printf "\t%s,\n", $1}' $temp
87echo '};
88
89const unsigned char builtincmd[] = {'
90awk '{ for (i = 2 ; i <= NF ; i++) {
91 if ($i == "-s") {
92 spc = 1;
93 } else if ($i == "-n") {
94 # Handled later for builtins.h
95 continue
96 } else {
97 printf "\t\"\\%03o\\%03o%s\"\n", length($i), (spc ? 128 : 0) + NR-1, $i
98 spc = 0;
99 }
100 }}' $temp
101echo '};'
102
103exec > builtins.h
104cat <<\!
105/*
106 * This file was generated by the mkbuiltins program.
107 */
108
109!
110tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ < $temp |
111 awk '{ printf "#define %s %d\n", $1, NR-1}'
112echo '
113#define BUILTIN_SPECIAL 0x80
114
115extern int (*const builtinfunc[])(int, char **);
116extern const unsigned char builtincmd[];
117'
118awk '{ printf "int %s(int, char **);\n", $1}' $temp
119
120# Build safe_builtin_always()
121cat <<EOF
122
123static inline int
124safe_builtin_always(int idx)
125{
126EOF
127awk '
128BEGIN { printed = 0 }
129{
130 for (i = 2 ; i <= NF ; i++) {
131 if ($i == "-s") {
132 continue
133 } else if ($i == "-n") {
134 nofork = 1;
135 } else {
136 if (nofork == 0) {
137 continue
138 }
139 if (printed == 1) {
140 printf " || \n\t "
141 } else {
142 printf "\tif ("
143 }
144 printf "idx == " toupper($1)
145 printed = 1
146 nofork = 0;
147 # Only need to check each once
148 break
149 }
150 }
151}' $temp
152
153cat << EOF
154)
155 return (1);
156 return(0);
157}
158EOF
159
160rm -f $temp
