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182 lines
4.0 KiB
Bash
Executable File
182 lines
4.0 KiB
Bash
Executable File
#!/usr/bin/env bash
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#
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# configure.sh Generates interactively a config.h from config.in
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#
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# net-tools A collection of programs that form the base set of the
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# NET-3 Networking Distribution for the LINUX operating
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# system.
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#
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# Usage: Install.sh [--nobackup] [--test]
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#
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# Version: Install.sh 1.65 (1996-01-12)
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#
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# Authors: Fred N. van Kempen, <waltje@uwalt.nl.mugnet.org>
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# Johannes Grosen, <grosen@argv.cs.ndsu.nodak.edu>
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# Copyright 1988-1993 MicroWalt Corporation
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#
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# Modified:
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# {1.65} Bernd eckes Eckenfels <net-tools@lina.inka.de>
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# some layout cleanups, slattach/plipconfig removed.
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# --test for testinstallations added.
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#
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# This program is free software; you can redistribute it
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# and/or modify it under the terms of the GNU General
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# Public License as published by the Free Software
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# Foundation; either version 2 of the License, or (at
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# your option) any later version.
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#
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#
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# Make sure we're really running bash.
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#
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# I would really have preferred to write this script in a language with
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# better string handling, but alas, bash is the only scripting language
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# that I can be reasonable sure everybody has on their Linux machine.
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#
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CONFIG=config.h
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MAKECONFIG=config.make
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[ -z "$BASH" ] && { echo "configure.sh requires bash" 1>&2; exit 1; }
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cat <<EOF
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######################################################
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Notice: ifconfig and route are now installed into /bin
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######################################################
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EOF
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# Disable filename globbing once and for all.
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# Enable function cacheing.
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set -f -h
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# set up reading of config file
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if [ "$#" != "1" ] || [ ! -f "$1" ]; then
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echo "usage: $0 configfile" 1>&2
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exit 1
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fi
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exec 7<$1
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config_fd_redir='<&7'
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#
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# readln reads a line into $ans.
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#
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# readln prompt default
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#
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function readln()
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{
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echo -n "$1"
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IFS='@' read ans || exit 1
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[ -z "$ans" ] && ans=$2
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}
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# bool processes a boolean argument
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#
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# bool tail
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#
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function bool()
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{
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# Slimier hack to get bash to rescan a line.
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eval "set -- $1"
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ans=""
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while [ "$ans" != "y" -a "$ans" != "n" ]
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do
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readln "$1 ($2) [$3] " "$3"
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done
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if [ "$ans" = "y" ]; then
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echo "#define $2 1" >>${CONFIG}
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echo "$2=1" >>${MAKECONFIG}
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else
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echo "#define $2 0" >>${CONFIG}
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echo "# $2=0" >> ${MAKECONFIG}
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fi
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raw_input_line="bool '$1' $2 $ans"
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eval "$2=$ans"
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}
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# int processes an integer argument
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#
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# int tail
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#
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function int()
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{
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# Slimier hack to get bash to rescan a line.
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eval "set -- $1"
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ans="x"
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while [ $[$ans+0] != "$ans" ];
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do
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readln "$1 ($2) [$3] " "$3"
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done
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echo "#define $2 ($ans)" >>${CONFIG}
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raw_input_line="int '$1' $2 $ans"
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eval "$2=$ans"
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}
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#
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# Make sure we start out with a clean state.
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#
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> config.new
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> ${CONFIG}
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> ${MAKECONFIG}
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stack=''
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branch='t'
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while IFS='@' eval read raw_input_line ${config_fd_redir}
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do
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# Slimy hack to get bash to rescan a line.
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read cmd rest <<-END_OF_COMMAND
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$raw_input_line
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END_OF_COMMAND
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if [ "$cmd" = "*" ]; then
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if [ "$branch" = "t" ]; then
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echo "$raw_input_line"
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# echo "# $rest" >>$CONFIG
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if [ "$prevcmd" != "*" ]; then
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echo >>${CONFIG}
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echo "/* $rest" >>${CONFIG}
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else
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echo " * $rest" >>${CONFIG}
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fi
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prevcmd="*"
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fi
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else
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[ "$prevcmd" = "*" ] && echo " */" >>${CONFIG}
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prevcmd=""
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case "$cmd" in
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=) [ "$branch" = "t" ] && echo "$rest" >>${CONFIG};;
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:) [ "$branch" = "t" ] && echo "$raw_input_line" ;;
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int) [ "$branch" = "t" ] && int "$rest" ;;
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bool) [ "$branch" = "t" ] && bool "$rest" ;;
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exec) [ "$branch" = "t" ] && ( sh -c "$rest" ) ;;
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if) stack="$branch $stack"
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if [ "$branch" = "t" ] && eval "$rest"; then
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branch=t
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else
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branch=f
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fi ;;
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else) if [ "$branch" = "t" ]; then
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branch=f
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else
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read branch rest <<-END_OF_STACK
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$stack
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END_OF_STACK
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fi ;;
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fi) [ -z "$stack" ] && echo "Error! Extra fi." 1>&2
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read branch stack <<-END_OF_STACK
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$stack
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END_OF_STACK
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;;
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esac
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fi
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echo "$raw_input_line" >>config.new
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done
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[ "$prevcmd" = "*" ] && echo " */" >>${CONFIG}
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[ -z "$stack" ] || echo "Error! Unterminated if." 1>&2
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mv config.new config.status
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exit 0
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