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' $srcdir/shell.h > /dev/null
38then havejobs=1
39fi
40
41feature_histedit=0
42feature_local=1
43feature_let=1
44feature_ulimit=1
45feature_setvar=1
46feature_wordexp=1
47
48if [ -f ../../config.mk ]; then
49 feature_histedit=$(grep '^[[:space:]]*FEATURE_SH_HISTEDIT[[:space:]]*=' ../../config.mk | cut -d= -f2 | tr -d '[:space:]')
50 feature_local=$(grep '^[[:space:]]*FEATURE_SH_LOCAL[[:space:]]*=' ../../config.mk | cut -d= -f2 | tr -d '[:space:]')
51 feature_let=$(grep '^[[:space:]]*FEATURE_SH_LET[[:space:]]*=' ../../config.mk | cut -d= -f2 | tr -d '[:space:]')
52 feature_ulimit=$(grep '^[[:space:]]*FEATURE_SH_ULIMIT[[:space:]]*=' ../../config.mk | cut -d= -f2 | tr -d '[:space:]')
53 feature_setvar=$(grep '^[[:space:]]*FEATURE_SH_SETVAR[[:space:]]*=' ../../config.mk | cut -d= -f2 | tr -d '[:space:]')
54 feature_wordexp=$(grep '^[[:space:]]*FEATURE_SH_WORDEXP[[:space:]]*=' ../../config.mk | cut -d= -f2 | tr -d '[:space:]')
55fi
56
57exec > builtins.c
58cat <<\!
59/*
60 * This file was generated by the mkbuiltins program.
61 */
62
63#include <stdlib.h>
64#include "shell.h"
65#include "builtins.h"
66
67!
68awk '/^[^#]/ {
69 if ($0 ~ /#FEATURE_SH_HISTEDIT/ && '$feature_histedit' != 1) next;
70 if ($0 ~ /#FEATURE_SH_LOCAL/ && '$feature_local' != 1) next;
71 if ($0 ~ /#FEATURE_SH_LET/ && '$feature_let' != 1) next;
72 if ($0 ~ /#FEATURE_SH_ULIMIT/ && '$feature_ulimit' != 1) next;
73 if ($0 ~ /#FEATURE_SH_SETVAR/ && '$feature_setvar' != 1) next;
74 if ($0 ~ /#FEATURE_SH_WORDEXP/ && '$feature_wordexp' != 1) next;
75
76 if ('$havejobs' || $2 != "-j") {
77 sub(/#[A-Z0-9_]*/, "");
78 print $0
79 }
80}' $srcdir/builtins.def | sed 's/-j//' > $temp
81echo 'int (*const builtinfunc[])(int, char **) = {'
82awk '/^[^#]/ { printf "\t%s,\n", $1}' $temp
83echo '};
84
85const unsigned char builtincmd[] = {'
86awk '{ for (i = 2 ; i <= NF ; i++) {
87 if ($i == "-s") {
88 spc = 1;
89 } else if ($i == "-n") {
90 # Handled later for builtins.h
91 continue
92 } else {
93 printf "\t\"\\%03o\\%03o%s\"\n", length($i), (spc ? 128 : 0) + NR-1, $i
94 spc = 0;
95 }
96 }}' $temp
97echo '};'
98
99exec > builtins.h
100cat <<\!
101/*
102 * This file was generated by the mkbuiltins program.
103 */
104
105!
106tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ < $temp |
107 awk '{ printf "#define %s %d\n", $1, NR-1}'
108echo '
109#define BUILTIN_SPECIAL 0x80
110
111extern int (*const builtinfunc[])(int, char **);
112extern const unsigned char builtincmd[];
113'
114awk '{ printf "int %s(int, char **);\n", $1}' $temp
115
116# Build safe_builtin_always()
117cat <<EOF
118
119static inline int
120safe_builtin_always(int idx)
121{
122EOF
123awk '
124BEGIN { printed = 0 }
125{
126 for (i = 2 ; i <= NF ; i++) {
127 if ($i == "-s") {
128 continue
129 } else if ($i == "-n") {
130 nofork = 1;
131 } else {
132 if (nofork == 0) {
133 continue
134 }
135 if (printed == 1) {
136 printf " || \n\t "
137 } else {
138 printf "\tif ("
139 }
140 printf "idx == " toupper($1)
141 printed = 1
142 nofork = 0;
143 # Only need to check each once
144 break
145 }
146 }
147}' $temp
148
149cat << EOF
150)
151 return (1);
152 return(0);
153}
154EOF
155
156rm -f $temp
