unpack_qpkg.sh

#!/bin/sh

usage(){
	echo "usage: $0 <path/to/qpkg>"
}

if [ $# -ne 1 ]
	then
		usage
		exit 1
fi

/bin/echo "Files generated in directory 'out'"

OUT_DIR=$PWD/out
CONTROL_DIR=$OUT_DIR/control
DATA_DIR=$OUT_DIR/data
/bin/mkdir -p $CONTROL_DIR $DATA_DIR || exit 1

line=`grep -an control.tar.gz $1 | awk -F: '{print $1}'`
echo "Removing $line lines of header script before control.tar.gz"

tail -n +$line $1 > $OUT_DIR/new$1

tar -xf $OUT_DIR/new${1} -C $OUT_DIR

/bin/dd if=$OUT_DIR/new${1} | /bin/tar -xO | /bin/tar -xzv -C $CONTROL_DIR || exit 1

offset=$(/usr/bin/expr $script_len + 20480)
/bin/dd if=$OUT_DIR/new${1} bs=$offset skip=1 | /bin/cat | /bin/dd bs=1024 of=$DATA_DIR/data.tar.gz || exit 1