#!/bin/sh

# $DragonFly: src/tools/tools/genreadmedeleted/genreadmedeleted,v 1.2 2006/09/27 10:24:15 corecode Exp $

if [ $# -lt 2 -o $# -gt 3 ]
then
	echo "$0 <origdir> <trim'ddir> [readmefile]" >&2
	echo "    readmefile defaults to trim'ddir/README.DELETED" >&2
	echo "    you can use '-' as readmefile to force output to stdout" >&2
	exit 1
fi

origdir=`realpath $1`/; shift
trimdir=`realpath $1`/; shift
readme=${1:-$trimdir/README.DELETED}

trimdir() {
	local curdir=$1
	local isdir
	cd "$origdir$curdir"
	set -- .* *
	for f
	do
		case "$f" in
		.|..)
			continue
			;;
		esac

		if [ -d "$f" ]
		then
			isdir=/
		else
			isdir=
		fi

		if [ ! -e "$trimdir$curdir$f" ]
		then
			printf '%s%s\n' "$curdir$f" "$isdir"
			continue
		fi

		case "$isdir" in
		/)
			(trimdir "$curdir$f/")
			;;
		esac
	done
}

case "$readme" in
-)
	;;
*)
	exec > $readme
	;;
esac

trimdir ""