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|
#! /bin/sh
# $NetBSD: mkinit.sh,v 1.2 2004/06/15 23:09:54 dsl Exp $
# Copyright (c) 2003 The NetBSD Foundation, Inc.
# All rights reserved.
#
# This code is derived from software contributed to The NetBSD Foundation
# by David Laight.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
# 1. Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in the
# documentation and/or other materials provided with the distribution.
# 3. Neither the name of The NetBSD Foundation nor the names of its
# contributors may be used to endorse or promote products derived
# from this software without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
# ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
# TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
# PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
# BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
# POSSIBILITY OF SUCH DAMAGE.
srcs="$*"
nl='
'
openparen='('
backslash='\'
includes=' "shell.h" "mystring.h" "init.h" '
defines=
decles=
event_init=
event_reset=
event_shellproc=
for src in $srcs; do
exec <$src
decnl="$nl"
while IFS=; read -r line; do
[ "$line" = x ]
case "$line " in
INIT["{ "]* ) event=init;;
RESET["{ "]* ) event=reset;;
SHELLPROC["{ "]* ) event=shellproc;;
INCLUDE[\ \ ]* )
IFS=' '
set -- $line
# ignore duplicates
[ "${includes}" != "${includes%* $2 }" ] && continue
includes="$includes$2 "
continue
;;
MKINIT\ )
# struct declaration
decles="$decles$nl"
while
read -r line
decles="${decles}${line}${nl}"
[ "$line" != "};" ]
do
:
done
decnl="$nl"
continue
;;
MKINIT["{ "]* )
# strip initialiser
def=${line#MKINIT}
comment="${def#*;}"
def="${def%;$comment}"
def="${def%%=*}"
def="${def% }"
decles="${decles}${decnl}extern${def};${comment}${nl}"
decnl=
continue
;;
\#define[\ \ ]* )
IFS=' '
set -- $line
# Ignore those with arguments
[ "$2" = "${2##*$openparen}" ] || continue
# and multiline definitions
[ "$line" = "${line%$backslash}" ] || continue
defines="${defines}#undef $2${nl}${line}${nl}"
continue
;;
* ) continue;;
esac
# code for events
ev="${nl} /* from $src: */${nl} {${nl}"
while
read -r line
[ "$line" != "}" ]
do
# The C program indented by an extra 6 chars using
# tabs then spaces. I need to compare the output :-(
indent=6
while
l=${line# }
[ "$l" != "$line" ]
do
indent=$(($indent + 8))
line="$l"
done
while
l=${line# }
[ "$l" != "$line" ]
do
indent=$(($indent + 1))
line="$l"
done
[ -z "$line" -o "$line" != "${line###}" ] && indent=0
while
[ $indent -ge 8 ]
do
ev="$ev "
indent="$(($indent - 8))"
done
while
[ $indent -gt 0 ]
do
ev="$ev "
indent="$(($indent - 1))"
done
ev="${ev}${line}${nl}"
done
ev="${ev} }${nl}"
eval event_$event=\"\$event_$event\$ev\"
done
done
exec >init.c.tmp
echo "/*"
echo " * This file was generated by the mkinit program."
echo " */"
echo
IFS=' '
for f in $includes; do
echo "#include $f"
done
echo
echo
echo
echo "$defines"
echo
echo "$decles"
echo
echo
echo "/*"
echo " * Initialization code."
echo " */"
echo
echo "void"
echo "init() {"
echo "${event_init%$nl}"
echo "}"
echo
echo
echo
echo "/*"
echo " * This routine is called when an error or an interrupt occurs in an"
echo " * interactive shell and control is returned to the main command loop."
echo " */"
echo
echo "void"
echo "reset() {"
echo "${event_reset%$nl}"
echo "}"
echo
echo
echo
echo "/*"
echo " * This routine is called to initialize the shell to run a shell procedure."
echo " */"
echo
echo "void"
echo "initshellproc() {"
echo "${event_shellproc%$nl}"
echo "}"
exec >&-
mv init.c.tmp init.c
|
