gen.package

##
##      Copyright (C) 2012 - 2014 XBian
##
##  Find us at: http://www.xbian.org http://github.com/xbianonpi/xbian
##
##  This Program is free software; you can redistribute it and/or modify
##  it under the terms of the GNU General Public License as published by
##  the Free Software Foundation; either version 2, or (at your option)
##  any later version.
##
##  This Program is distributed in the hope that it will be useful,
##  but WITHOUT ANY WARRANTY; without even the implied warranty of
##  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
##  GNU General Public License for more details.
##
##  You should have received a copy of the GNU General Public License
##  along with XBMC; see the file COPYING.  If not, see
##  <http://www.gnu.org/licenses/>.
##
##

if [ -e $XBIANROOT/common.functions ]; then
    . $XBIANROOT/common.functions
else
    echo "Wrong setup. Open folder containing xbianonpi/xbian clone and rerun \"./run.me prepare\""
    exit 500
fi

rm_size() {
    [ -n "$1" ] && dir="$1" || dir=content
    cat ./$dir/DEBIAN/control | grep -v "Installed-Size:" > ./$dir/DEBIAN/control.new
    mv ./$dir/DEBIAN/control.new ./$dir/DEBIAN/control
    rm -f ./size.txt
}

make_shlibs() {
    echo "... creating lib dependencies (this may take a while)"
    $config_build_env fakeroot dpkg-architecture -a$sarch -c dh_shlibdeps --dpkg-shlibdeps-params=--ignore-missing-info 2>&1| grep -v 'warning\:'
    echo "... lib dependencies done"
}

make_dbg() {
    echo "... creating dbg package (this may take a while)"
    $config_build_env fakeroot dpkg-architecture -a$sarch -c dh_strip --dbg-package=$package
    mkdir -p ../content-dbg; rm -fr ../content-dbg/*; mkdir ../content-dbg/DEBIAN
    mv DEBIAN/control-dbg ../content-dbg/DEBIAN/control
    mv DEBIAN/$package-dbg/* ../content-dbg && rmdir DEBIAN/$package-dbg
    echo "... dbg package done"
}

prepare_debhelper_tree() {
    case "$1" in
        start)
            rmsrc=no
            echo 4.0 > DEBIAN/compat

            if ! grep -q 'Source\:' DEBIAN/{control,control-dbg}; then 
                rmsrc=yes
                sed -i 's/Package:/Source:\nPackage:/' DEBIAN/{control,control-dbg}
            fi

            sarch=$(grep -m1 'Architecture\:' DEBIAN/control | awk -F':' '{print $2}')
            sarch=$(echo $sarch | tr -d ' ')
            [ -n "$sarch" ] || sarch=$(dpkg-architecture |grep TARGET_ARCH= | awk -F'=' '{print $2}')

            mkdir -p DEBIAN/$package
            find ./ -mindepth 1 -maxdepth 1 -print0 | grep -vz ./DEBIAN\* | xargs -0 mv -t DEBIAN/$package
            ln -s DEBIAN debian
            ;;
        end)
            rm -fr DEBIAN/$package/DEBIAN
            mv DEBIAN/$package/* ./
            rm -fr DEBIAN/$package 
            rm -f debian DEBIAN/compat
            [ $rmsrc = yes ] && sed -i '/Source:/d' DEBIAN/control

            depends=$(cat DEBIAN/$package.substvars | awk -F'Depends=' '{print $2}')
            sed -i "s%\${shlibs:Depends}%$depends%" DEBIAN/control
            rm -f DEBIAN/*.log DEBIAN/$package.substvars
            ;;
        *)
            ;;
    esac
}

tot=0

package=$(grep -m1 Package ./content/DEBIAN/control | awk '{print $2}')
version=$(grep -m1 Version ./content/DEBIAN/control | awk '{print $2}')

# calculate size dynamically. remove first any entry, then add the actual 
rm_size

cd content
grep -q '${shlibs:Depends}' DEBIAN/control || test -e DEBIAN/control-dbg && \
    {
        prepare_debhelper_tree start
        grep -q '${shlibs:Depends}' DEBIAN/control && [ -n "$config_build_env" ] && make_shlibs
        test -e DEBIAN/control-dbg && [ -n "$config_build_env" ] && make_dbg
        prepare_debhelper_tree end
    }

cd ..
for c in content content-dbg; do 
  [ -d $c ] || continue
  package=$(grep -m1 Package ./$c/DEBIAN/control | awk '{print $2}')
  (
    cd $c
    tot=$(du -sb | awk '{print $1}'); tot=$((tot/1024)); echo $tot > ../size.txt
    printf "Installed-Size: %u\n" $(cat ../size.txt) >> ./DEBIAN/control
    find ./ -type f ! -regex '.*.hg.*' ! -regex '.*?debian-binary.*' ! -regex '.*?DEBIAN.*' -printf '%P\0' | sort -z| xargs --null md5sum > DEBIAN/md5sums 
  )
  fakeroot dpkg-deb -Zxz -b ./$c "${package}""${version}".deb
  # remove the size again, because on different filesystems du will return different size
  rm_size $c
done

sync