#!/bin/sh
# Make .deb package
# Usage: make-deb-package data control [-o p.deb] [-postinst postinst] [-postrm postrm]
# Yves Piguet, 3 Sept 2008, http://nyctergatis.com

# help
if [ "$1" == --help -o -z "$1" -o -z "$2" ]
then
	echo "Usage: $0 data control [-o p.deb] [-postinst postinst] [-postrm postrm]"
	echo "data: directory to be unarchived at the root of the target file system"
	echo "control: debian control file"
	echo "p.deb: output package file"
	echo "postinst: shell script to execute after installation"
	echo "postrm: shell script to execute after removal"
	exit 0
fi

# default values
DIR="$1"
CONTROL="$2"
DEB="$DIR".deb
POSTINST=""
POSTRM=""
if [ -n "$TMPDIR" ]
then
	TMP=$TMPDIR"debian-tmp"
else
	TMP=/tmp/debian-tmp
fi

# decode optional arguments
while [ -n "$3" ]
do
	case "$3" in
		-o)
			DEB="$4"
			;;
		-postinst)
			POSTINST="$4"
			;;
		-postrm)
			POSTRM="$4"
			;;
		*)
			echo "Unknown option $3" >&2
			echo "Type $0 --help for help" >&2
			exit 1
			;;
	esac
	
	shift
	shift
done

# create temporary directory

rm -Rf "$TMP"
mkdir "$TMP"

# debian-binary
echo 2.0 >"$TMP"/debian-binary

# control.tar.gz
mkdir "$TMP"/control
cp "$CONTROL" "$TMP"/control/control
if [ -n "$POSTINST" ]
then
	cp "$POSTINST" "$TMP"/control/postinst
	chmod +x "$TMP"/control/postinst
fi
if [ -n "$POSTRM" ]
then
	cp "$POSTRM" "$TMP"/control/postrm
	chmod +x "$TMP"/control/postrm
fi
(cd "$TMP"/control; COPY_EXTENDED_ATTRIBUTES_DISABLE=true tar cfz ../control.tar.gz *)

# data.tar.gz
(cd "$DIR"; COPY_EXTENDED_ATTRIBUTES_DISABLE=true tar cfz "$TMP"/data.tar.gz *)

# deb
ar -q "$DEB" \
	"$TMP"/debian-binary "$TMP"/control.tar.gz "$TMP"/data.tar.gz

# clean up
rm -Rf $TMP
exit 0