#! /bin/sh
#-
# Copyright (c) 2000 John Polstra
# All rights reserved.
#
# 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.
#
# THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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.

# Recursive function so that the tags are done in reverse order.  That
# makes them come out in the same order in the final file.
fix() {
    local file tag

    if [ $# -le 1 ]; then
	return
    fi
    file=$1
    tag=$2
    shift 2
    fix $file $* || exit
    new=old_$tag
    echo "  $tag ==> $new"
    rcs -q -n${new}:${tag} $file || exit
    rcs -q -n${tag} $file || exit
}

ecmd=cat
icmd=cat

while getopts "e:i:" opt; do
    case $opt in
    e) ecmd="fgrep -f $OPTARG -x -v";;
    i) icmd="fgrep -f $OPTARG -x";;
    *) echo "Usage: $(basename $0) [-e excludefrom] [-i includefrom] file..."
       exit 1;;
    esac
done
shift $(($OPTIND-1))

for file; do
    echo $file:
    tags=$(rlog -h $file | grep '^	' |\
	sed -e 's/^	\([^:]*\):.*$/\1/' | $ecmd | $icmd)
    fix $file $tags
done