#!/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 -not -size 0`

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

	OLD_IFS="$IFS"

	IFS=$(printf '\n\t')

	for j in $JARS ; do

		JARNAME=`basename "$j"`

		JTMPDIR=`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 "$JTMPDIR" > /dev/null

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

		find -type d -exec chmod a+rx,u+w {} \;

		find -type f -exec chmod a+r,u+w {} \;

		rm -f "$j"

		# Create the directories first.

		find -type d | LC_ALL=C sort | while read d; 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.

		DATE="1970-01-01 UTC"

		if [ -z $_PACKAGE_BUILD_DIR ]; then

			_PACKAGE_BUILD_DIR=$RPM_BUILD_DIR/$RPM_PACKAGE_NAME-$RPM_PACKAGE_VERSION

		fi

		if [ -d $_PACKAGE_BUILD_DIR ]; then

			CHANGELOGS=`find $_PACKAGE_BUILD_DIR -type f -name ChangeLog`

			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

		fi

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

		# the times.

		find -type f | LC_ALL=C sort | while read f; do

			cp "$f" "$JARDIR/$f"

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

        	done

		popd > /dev/null

		# Set the times of the directories.

		find "$JARDIR" -type d | while read d; do

			touch --date="$DATE" "$d"

		done

		# make the jar

		pushd "$JARDIR" > /dev/null

		if [ -n "`find -not -name '.'`" ]; then

			if [ -e META-INF/MANIFEST.MF ]; then

			    /usr/bin/zip -q -X -9 "$j" META-INF/MANIFEST.MF

			fi

			find * -not -name '.' | LC_ALL=C sort | /usr/bin/zip -u -q -X -9 "$j" -@

		else

			# Put the empty jar back

			touch "$j"

		fi

		popd > /dev/null

		# Cleanup.

		rm -rf "$JTMPDIR"

		rm -rf "$JARDIR"

		rm -f "$TIMEREF"

	done

	IFS="$OLD_IFS"

	# remove $RPM_BUILD_ROOT/tmp if we created it

	if [ $rmtmp -eq 1 ]; then

		rm -rf $RPM_BUILD_ROOT/tmp

	fi

fi