#!/bin/sh

set -e

if [ $# -lt 1 ]; then
	echo "usage: $0: package.opk filename ..."
	exit 1
fi

if [ $# -eq 2 ]; then
  opkgfilename=$1
  filename=$2
else
  echo "usage: $0 opkgfilename filename"  
  exit -1
fi


tmpdir=/tmp/opkg-extract-$$
mkdir $tmpdir

pkgdir=$tmpdir/`basename $opkgfilename | sed 's/.*\///;s/.opk$//;s/.deb$//;s/.ipk$//'`

mkdir -p $pkgdir/CONTROL

cur_dir=$PWD
echo "$cur_dir/$opkgfilename"
cd $pkgdir; (ar x $cur_dir/$opkgfilename || tar zxf $cur_dir/$opkgfilename) >& /dev/null
cd $cur_dir
echo "tar xzf $pkgdir/data.tar.gz"
tar xzf $pkgdir/data.tar.gz -C $pkgdir
echo "tar xzf $pkgdir/control.tar.gz"
tar xzf $pkgdir/control.tar.gz -C $pkgdir/CONTROL
rm -f $pkgdir/control.tar.gz $pkgdir/data.tar.gz $pkgdir/debian-binary

cp $pkgdir/$filename `basename $filename`
rm -fr $tmpdir
