#!/bin/bash

polkit_blacklist="
0.113/README-Note-to-send-security-reports-via-DBus-s-mech.patch
0.114/Add-gettext-support-for-.policy-files.patch
0.114/gettext-switch-to-default-translate-no.patch
0.116/tests-add-tests-for-high-uids.patch
01_pam_polkit.patch
02_gettext.patch
06_systemd-service.patch
"
openssl_blacklist="
config-hurd.patch
engines-path.patch
man-dir.patch
man-section.patch
rehash_pod.patch
version-script.patch
gnu_source.patch
c_rehash-compat.patch
dgst_hmac.patch
fix-pod-errors.patch
ppc64el.patch
disable_sslv3_test.patch
libdoc-manpgs-pod-spell.patch
soname.patch
no-symbolic.patch
"

elfutils_blacklist="
testsuite-ignore-elflint.diff
kfreebsd_path.patch
hurd_path.patch
ignore_strmerge.diff
0001-tests-Add-GCOV-flags-when-necessary.patch
"

cpufrequtils_blacklist="
01_add_cpufreq-aperf_manpage.patch
0002-cpufrequtils-Remove-proc-compile-option-and-interfac.patch
0004-i18n-Catalan.patch
0007-po-add-missing-word-in-DE.patch
10_build_static_lib.patch
11_dont_touch_po_files.patch
"

ppp_blacklist="
010_scripts_README.diff
011_scripts_redialer.diff
chat_man
no_crypt_hack
pppd-soname-hack.patch
secure-card-interpreter-fix
"

fakeroot_blacklist="
fix-shell-in-fakeroot
"

set -e
set -x

start="$(pwd)"
src="$(pwd)/$1"
deb="$(pwd)/$2"

base="$(basename "${src}")"
base="${base%_*}"
case "${base}" in
openssl|elfutils|cpufrequtils|ppp|fakeroot)
	;;
policykit-1)
	base=polkit
	;;
*)
	echo "Unknown package '${base}'. Aborting!"
	exit 1
	;;
esac
blacklistptr="${base}_blacklist"
blacklist="${!blacklistptr}"

tmp="$(mktemp -d)"

cd "$tmp"

tar xf "$src"
pkg="$(ls -d ${base}-*)"

tar xf "$deb"
patches=debian/patches
for patch in $blacklist; do
	sed -i "s;\(${patch}\);#\1;" ${patches}/series
done

if [ "${base}" = "polkit" ]; then
	for dir in $(find debian/patches/ -mindepth 1 -maxdepth 1 -type d -printf "%P\n"); do
		sed -i "s;Subject:;Subject: ${dir}:;" "debian/patches/${dir}/"*
	done
fi
if [ "${base}" = "ppp" ]; then
	sed -i 's;^Description: \(.*\)$;Subject: \1\n;' debian/patches/*
	sed -i -e '/^Subject:/{p;d}' -e '1N;s/\(.*\n\)$/Subject: \1/;' debian/patches/*
fi

cd "$pkg"
git init
git add *
git commit -m "base"
git tag base

export FILTER_BRANCH_SQUELCH_WARNING=1

author="$(git config user.name) <$(git config user.email)>"
git quiltimport --patches=../$patches/ --author "${author}"
git filter-branch --msg-filter "cat | grep -v '^==*$' && echo '\nImported from $(basename $deb)\n\nSigned-off-by: ${author}'" base...master
git filter-branch -f --msg-filter "cat | sed -e '/\.diff$/s/-/ /g' -e '1s/.diff$//' " base...master

git format-patch --no-signature -N base
mkdir "$start/$pkg"
mv 0*.patch "$start/$pkg/"
cd "$start"
rm -rf "$tmp"

cd "$start/$pkg/"
sed -i 1d 0*.patch
ls 0*.patch > series