#!/bin/bash

release=$1
dscfile=$2

set -e

if [ -z "$release" ]; then
  echo "You need to provide a distribution codename (e.g. 'lenny', 'squeeze')."
  exit 1
fi


set -e
set -u

if [ -z "$2" ]; then
cat << EOT
Script to backport a source package to some target release.

Synopsis
--------

  nd_backport <codename> <dsc file>

EOT
exit 1
fi

. /home/neurodebian/neurodebian.git/tools/nd_cmdsettings.sh

DEBEMAIL="pkg-exppsy-maintainers@lists.alioth.debian.org"
DEBFULLNAME="NeuroDebian Maintainers"
export DEBEMAIL DEBFULLNAME

srcname=${dscfile%%_*}
srcversion=${dscfile#*_}
srcversion=${srcversion%%.dsc}
wdir=$(mktemp -d -t nd_backport.XXXXXX)
sdir=$wdir/${srcname}-${srcversion}

echo "Source package name: $srcname"
echo "Source package version: $srcversion"
echo "Extracting source package to: $sdir"

dpkg-source -x $dscfile $sdir

echo "Backporting to: $release"

changelog_entry="Backport of Debian package version $srcversion for \
NeuroDebian. Problems with the backport should be reported to the
NeuroDebian maintainers and not to the original Debian maintainer."

echo | debchange \
         --noconf --force-bad-version \
         -c $sdir/debian/changelog \
         -D neurodebian \
         -b -l "~${release}.nd" \
         $changelog_entry

bpversion=$(dpkg-parsechangelog -l$sdir/debian/changelog | egrep '^Version: ' | cut -d ' ' -f 2,2)
dpkg-source -b $sdir

# cleanup
rm -rf $wdir

echo ${srcname}_$bpversion.dsc