#!/bin/ksh
#
# CDDL HEADER START
#
# The contents of this file are subject to the terms of the
# Common Development and Distribution License (the "License").
# You may not use this file except in compliance with the License.
#
# You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
# or http://www.opensolaris.org/os/licensing.
# See the License for the specific language governing permissions
# and limitations under the License.
#
# When distributing Covered Code, include this CDDL HEADER in each
# file and include the License file at usr/src/OPENSOLARIS.LICENSE.
# If applicable, add the following below this CDDL HEADER, with the
# fields enclosed by brackets "[]" replaced with your own identifying
# information: Portions Copyright [yyyy] [name of copyright owner]
#
# CDDL HEADER END
#
# Copyright (c) 2011, Oracle and/or its affiliates. All rights reserved.
#
# clone a directory to another using symlinks, in a very clunky way

if [ $# != 2 ]; then
	echo "usage $0 srcdir destdir"
	exit 1
fi

srcdir=$1
destdir=$2

PATH=/usr/bin
if [ "X$CLONEY_MODE" = "X" ];then
	CLONEY_MODE="symlink"
fi

echo $CLONEY_MODE cloning $srcdir to $destdir

if [ "$CLONEY_MODE" = "symlink" ]; then
cd ${srcdir}
gfind . -type d | \
    grep -v '^.$' | \
    gsed -e 's,^\./,,' | \
    while read i;
do
	mkdir -p "${destdir}/$i"
done

# Copy files and symlinks, making sure we ignore the gnu-patch backup
# files, too.
gfind . -type f -o -type l | \
    egrep -v '~[0-9]+~' | \
    gsed -e 's,^\./,,' | \
    while read i;
do
	rm -f "${destdir}/$i"
	ln -s "${srcdir}/$i" "${destdir}/$i"
done
elif [ "$CLONEY_MODE" = "hardlink" ]; then
cd ${srcdir}
gfind . -type d | \
    grep -v '^.$' | \
    gsed -e 's,^\./,,' | \
    while read i;
do
	mkdir -p "${destdir}/$i"
done

# Copy files and symlinks, making sure we ignore the gnu-patch backup
# files, too.
gfind . -type f -o -type l | \
    egrep -v '~[0-9]+~' | \
    gsed -e 's,^\./,,' | \
    while read i;
do
	rm -f "${destdir}/$i"
	ln "${srcdir}/$i" "${destdir}/$i"
done
elif [ "$CLONEY_MODE" = "copy" ]; then
cd ${srcdir}
gfind . -type d | \
    grep -v '^.$' | \
    gsed -e 's,^\./,,' | \
    while read i;
do
	mkdir -p "${destdir}/$i"
done

# Copy files and symlinks, making sure we ignore the gnu-patch backup
# files, too.
gfind . -type f -o -type l | \
    egrep -v '~[0-9]+~' | \
    gsed -e 's,^\./,,' | \
    while read i;
do
	rm -f "${destdir}/$i"
	cp -a "${srcdir}/$i" "${destdir}/$i"
done
else
	echo "CLONEY_MODE=$CLONEY_MODE not supported"
	exit 1
fi