#!/bin/bash
# This script will help you diff a *-libre PKGBUILD against the unfree one
# to check for updates.
# Copyright 2010 Nicolás Reynolds

# ---------- GNU General Public License 3 ----------
 
# This file is part of Parabola. 
 
# Parabola 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 3 of the License, or 
# (at your option) any later version. 
 
# Parabola 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 Parabola. If not, see <http://www.gnu.org/licenses/>. 

source /etc/libretools.conf
custom_config=$XDG_CONFIG_HOME/libretools/libretools.conf

[[ "$1" == "--help" ]] && {
    msg "Diff-Unfree helps you diff build scripts from ABSLibre against
    (Unfree) ABS. Package name and repo will we guessed if you don't
    specify them."
    msg2 "Usage: $0 [unfree-package] [repo]"
    exit 0
}

[[ ! -r PKGBUILD ]] && {
    error "This is not a build dir."
    exit 1
}

package_guess=$(basename $PWD)

package=${1:-${package_guess/-libre}}
repo=${2:-$(basename $(dirname $PWD))}

tmp_dir=$(mktemp -d /tmp/${package}.XXXXXX)
unfree_dir="${tmp_dir}/packages/${package}/trunk"

svnrepo="packages"
case $repo in;
    community*)
        svnrepo="community"
        ;;
    multilib*)
        svnrepo="community"
        ;;
    *)
        ;;
esac

[[ ! -d "${tmp_dir}" ]] && {
    error "Can't create temp dir"
    exit 1
}

stdnull 'pushd "${tmp_dir}"'

msg "Getting diff from $repo/$package..."

stdnull 'svn checkout --depth=empty svn://svn.archlinux.org/$svnrepo'

cd packages
svn update ${package}

# Back to start dir
stdnull popd

msg "Diffing files"

for _file in ${unfree_dir}/*; do
    msg2 "$(basename "${_file}")"
    ${DIFFTOOL} "$PWD/$(basename "${_file}")" "${_file}"
done

exit $?