#! /bin/sh
#
#	$NetBSD: dtc2netbsd,v 1.2 2017/06/16 22:47:22 jmcneill Exp $
#
#
# Copyright (c) 2017 The NetBSD Foundation, Inc.
# All rights reserved.
#
# This code is derived from software contributed to The NetBSD Foundation
# by Nick Hudson
#
# 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 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.
#
# dtc2netbsd:  convert a dtc source tree into netbsd dtc/libfdt source trees
#
# Rough instructions for importing new dtc release:
#
#	$ cd /some/where/temporary
#	$ tar xpfz /dtc/release/tar/file
#	$ DTCSRCS=$(pwd)
#	$ WRKDIR=/an/other/temporary
#	$ sh /usr/src/external/gpl2/dtc/dtc2netbsd $DTCSRCS $WRKDIR
#
# Import libfdt using
#	$ cd $WRKDIR/libfdt
#	$ cvs import -m "Import libfdt <version>" src/sys/external/bsd/libfdt/dist DTC dtc-<version>
#
# merge libfdt sources using, e.g.
#	$ cvs -d cvs.netbsd.org:/cvsroot checkout -jdtc-1-4-1 -jdtc-1-4-4 src/sys/external/bsd/libfdt/dist
#
# Import dtc using
#	$ cd $WRKDIR/dtc
#	$ cvs import -m "Import dtc YYYY-MM-DD" src/external/gpl2/dtc/dist DTC dtc-<version>
# merge dtc sources using, e.g.
# 	$ cvs -d cvs.netbsd.org:/cvsroot checkout -jdtc-1-4-1 -jdtc-1-4-4 src/external/gpl2/dtc/dist
#
# Update the version string in the version_gen.h header to match the imported version:
#	$ echo '#define DTC_VERSION "DTC 1.4.4"' > src/external/gpl2/dtc/usr.bin/dtc/version_gen.h

if [ $# -ne 2 ]; then echo "dtc2netbsd dtcsrc tmpdir"; exit 1; fi

r=$1
d=$2

case "$d" in
	/*)
		;;
	*)
		d=`/bin/pwd`/$d
		;;
esac

case "$r" in
	/*)
		;;
	*)
		r=`/bin/pwd`/$r
		;;
esac

echo preparing directory $d
rm -rf $d
mkdir -p $d/dtc

### Copy the files and directories
echo copying $r to $d
cd $r
pax -rw * $d/dtc
mv $d/dtc/libfdt $d/libfdt

# cd to import directory
cd $d

#

### Remove the $'s around RCS tags
cleantags $d

### Add our NetBSD RCS Id
find $d -type f -name '*.[chly]' -print | while read c; do
	sed 1q < $c | grep -q '\$NetBSD' || (
echo "/*	\$NetBSD\$	*/" >/tmp/dtc$$
echo "" >>/tmp/dtc$$
cat $c  >> /tmp/dtc$$
mv /tmp/dtc$$ $c && echo added NetBSD RCS tag to $c
	)
done

echo done

### Clean up any CVS directories that might be around.
echo "cleaning up CVS residue."
(
	cd $d
	find . -type d -name "CVS" -print | xargs rm -r
)
echo done

### Fixing file and directory permissions.
echo "Fixing file/directory permissions."
(
	cd $d
	find . -type f -print | xargs chmod u+rw,go+r
	find . -type d -print | xargs chmod u+rwx,go+rx
)
echo done

exit 0