#!/bin/sh

# If using normal root, avoid changing anything.

if [ -z "$RPM_BUILD_ROOT" -o "$RPM_BUILD_ROOT" = "/" ]; then

	exit 0

fi

# If zip is not installed, we can't repack the jars.

if [ ! -x /usr/bin/zip ]; then

	exit 0

fi

if [ ! -x /usr/bin/unzip ]; then

	exit 0

fi

JARS=`find $RPM_BUILD_ROOT -type f -name \*.jar`

if [ ! -z "$JARS" ]; then 

	# make $RPM_BUILD_ROOT/tmp if it doesn't exist

	rmtmp=0

	if [ ! -x "$RPM_BUILD_ROOT/tmp" ]; then

		mkdir -p $RPM_BUILD_ROOT/tmp

		rmtmp=1

	fi

	# unpack every jar, set the date of the files and directories and 

	# repack the jar

	for j in $JARS ; do

		JARNAME=`basename $j`

		TMPDIR=`mktemp -d -p $RPM_BUILD_ROOT/tmp $JARNAME.tmpdir.XXXXXXXXXX` || exit 1

		JARDIR=`mktemp -d -p $RPM_BUILD_ROOT/tmp $JARNAME.jardir.XXXXXXXXXX` || exit 1

		TIMEREF=`mktemp -p $RPM_BUILD_ROOT/tmp $JARNAME.timeref.XXXXXXXXXX` || exit 1

		pushd $TMPDIR > /dev/null

		/usr/bin/unzip -qq -o $j

		rm -f $j

		# Create the directories first.

		for d in `find -type d | LC_ALL=C sort`; do

            		mkdir -p $JARDIR/$d

        	done 

		# Get the modtime from the newest ChangeLog. If the project

		# doesn't have a ChangeLog, Jan 1, 1970 will be used.

		CHANGELOGS=`find $RPM_BUILD_DIR/$RPM_PACKAGE_NAME-$RPM_PACKAGE_VERSION -type f -name ChangeLog`

		DATE="1970-01-01 UTC"

		if [ ! -z "$CHANGELOGS" ]; then

			for c in $CHANGELOGS; do

				TMPDATE=`stat -c %y $c | cut -d " " -f 1-2`

				if [ `date --date="$TMPDATE" +%s` -gt `date --date="$DATE" +%s` ]; then

					DATE="$TMPDATE"

				fi

			done

		fi 

		# move the contents over to the a new directory in order and set

		# the times. 

		for f in `find -type f | LC_ALL=C sort`; do 

            		cp $f $JARDIR/$f

            		touch --date="$DATE" $JARDIR/$f

        	done

		popd > /dev/null

		# Set the times of the directories.

		touch --date="$DATE" `find $JARDIR -type d`

		# make the jar

		pushd $JARDIR > /dev/null

		find . -type f -print | LC_ALL=C sort | /usr/bin/zip -q -X -9 $j -@

		popd > /dev/null

		# Cleanup.

		rm -rf $TMPDIR

		rm -rf $JARDIR

		rm -f $TIMEREF

	done

	# remove $RPM_BUILD_ROOT/tmp if we created it

	if [ $rmtmp -eq 1 ]; then

		rm -rf $RPM_BUILD_ROOT/tmp

	fi

fi