#!/bin/sh

set -u
set -e
trap onexit INT
trap onexit TERM
trap onexit EXIT

TMPDIR=

onexit()
{
	if [ ! "$TMPDIR" = "" ]; then
		sudo rm -rf $TMPDIR
	fi
}

usage()
{
	echo "$0 <package name> <version> <build> <DEB architecture> <source dir.>"
	exit 1
}

makedeb()
{
	SUPPLEMENT=$1
	DIRNAME=$PACKAGE_NAME

	if [ $SUPPLEMENT = 1 ]; then
		PACKAGE_NAME=$PACKAGE_NAME\32
		DEBARCH=amd64
		__LIB=lib32
	else
		__LIB=lib
	fi

	umask 022
	rm -f $PACKAGE_NAME\_$DEBARCH.deb
	TMPDIR=`mktemp -d /tmp/$PACKAGE_NAME-build.XXXXXX`
	mkdir $TMPDIR/DEBIAN
	(cat $SRCDIR/release/deb-control.tmpl | sed s/{__PKGNAME}/$PACKAGE_NAME/g \
		| sed s/{__VERSION}/$VERSION/g | sed s/{__BUILD}/$BUILD/g \
		| sed s/{__ARCH}/$DEBARCH/g > $TMPDIR/DEBIAN/control)

	make install prefix=$TMPDIR/opt/$DIRNAME libdir=$TMPDIR/opt/$DIRNAME/$__LIB mandir=$TMPDIR/opt/$DIRNAME/man
	rm -f $TMPDIR/opt/$DIRNAME/$__LIB/*.la

	if [ $SUPPLEMENT = 1 ]; then
		rm -rf $TMPDIR/opt/$DIRNAME/include
		rm -rf $TMPDIR/opt/$DIRNAME/man
		rm -rf $TMPDIR/opt/$DIRNAME/bin
	fi

	mkdir -p $TMPDIR/usr/$__LIB
	mv $TMPDIR/opt/$DIRNAME/$__LIB/libturbojpeg.* $TMPDIR/usr/$__LIB
	ln -fs /usr/$__LIB/libturbojpeg.a $TMPDIR/opt/$DIRNAME/$__LIB/
	/sbin/ldconfig -n $TMPDIR/opt/$DIRNAME/$__LIB
	/sbin/ldconfig -n $TMPDIR/usr/$__LIB

	if [ ! $SUPPLEMENT = 1 ]; then
		if [ "$DEBARCH" = "amd64" ]; then
			ln -fs lib $TMPDIR/opt/$DIRNAME/lib64
		else
			if [ ! "$__LIB" = "lib32" ]; then
				ln -fs lib $TMPDIR/opt/$DIRNAME/lib32
			fi
		fi
		mkdir -p $TMPDIR/usr/include
		mv $TMPDIR/opt/$DIRNAME/include/turbojpeg.h $TMPDIR/usr/include
		ln -fs /usr/include/turbojpeg.h $TMPDIR/opt/$DIRNAME/include/
		mkdir -p $TMPDIR/usr/share/doc/$DIRNAME-$VERSION
		install -m 644 $SRCDIR/LICENSE.txt $TMPDIR/usr/share/doc/$DIRNAME-$VERSION
		install -m 644 $SRCDIR/LGPL.txt $TMPDIR/usr/share/doc/$DIRNAME-$VERSION
		install -m 644 $SRCDIR/README-turbo.txt $TMPDIR/usr/share/doc/$DIRNAME-$VERSION
		install -m 644 $SRCDIR/README $TMPDIR/usr/share/doc/$DIRNAME-$VERSION
		install -m 644 $SRCDIR/libjpeg.txt $TMPDIR/usr/share/doc/$DIRNAME-$VERSION
		install -m 644 $SRCDIR/usage.txt $TMPDIR/usr/share/doc/$DIRNAME-$VERSION
	fi

	sudo chown -Rh root:root $TMPDIR/*
	dpkg -b $TMPDIR $PACKAGE_NAME\_$DEBARCH.deb
}

if [ $# -lt 5 ]; then usage $0; fi
PACKAGE_NAME=$1
VERSION=$2
BUILD=$3
DEBARCH=$4
SRCDIR=$5

makedeb 0
if [ "$DEBARCH" = "i386" ]; then makedeb 1; fi

exit