source: ipk/ipkg-utils-050831/ipkg-extract-file@ 7967

#!/bin/sh

set -e

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

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

case $ipkgfilename in
http:*)
    wget -N $ipkgfilename
    ipkgfilename=`basename $ipkgfilename`
    echo eez http url $ipkgfilename
;;
ftp:*)
    wget -N $ipkgfilename
    ipkgfilename=`basename $ipkgfilename`
    echo eez ftp url $ipkgfilename
;;
esac


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

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

mkdir -p $pkgdir/CONTROL

cur_dir=$PWD
cd $pkgdir; (ar x $cur_dir/$ipkgfilename || tar zxf $cur_dir/$ipkgfilename) >& /dev/null
cd $cur_dir

tar xzf $pkgdir/data.tar.gz -C $pkgdir
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`
ls -l `basename $filename`
file `basename $filename`
rm -fr $tmpdir