#!/bin/bash
#  pkgbuild-check-nonfree
#  Copyright 2010 Joshua Ismael Haase Hernández, Joseph Graham

#  ---------- 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/>.

function in_array {  #  usage : in_array( $needle, $haystack )

    [[ $2 ]] || return 1  # Not found
    local needle=$1; shift
    local item
    for item in "$@"; do
	[[ ${item#@} = $needle ]] && return 0  # Found
    done
    return 1 # Not Found
}


function get_blacklist {  # Download the blacklist.

    msg "Downloading the blacklist of proprietary software packages."
    wget -N -q -O blacklist.txt "${BLACKLIST}" 2>/dev/null || {
        [ -e $XDG_CONFIG_HOME/libretools/blacklist.txt ] || {
            error "Download failed, exiting"
            exit 1
        }
        warning "Using local copy of blacklist"
}

function check_deps {  # Check wheter a package depends on non-free

    pushd $XDG_CONFIG_HOME/libretools/ >/dev/null
    local unfree=($(cut -d: -f1 blacklist.txt))   # pkgname:free-replacement:comments
    local freerep=($(cut -d: -f2 blacklist.txt))  # pkgname:free-replacement:comments
    popd >/dev/null

    msg "Looking for unfree dependencies"
    for item in ${pkgname[@]} ${depends[@]} ${makedepends[@]} ; do

        if in_array $item ${unfree[@]} ; then

            if in_array $item ${freerep[@]} ; then
                warning "$item is repackaged with the same name."
                continue

            elif in_array $item-libre ${freerep[@]} ; then
                warning "$item -> $item-libre"
                continue
            else
                ev=15
                msg2 "found $item"
            fi
        fi
    done
}

source /etc/libretools.conf

if [ -z $XDG_CONFIG_HOME ]; then  # Avoid /libretools dir doesn't exist errors
    error "There's no XDG_CONFIG_HOME var set"; exit 1
elif [ -e $XDG_CONFIG_HOME/libretools/libretools.conf ]; then
    source $XDG_CONFIG_HOME/libretools/libretools.conf
fi

if [ -z "${BLACKLIST}" ]; then
    error "BLACKLIST variable is not set your libretools.conf file"; exit 1
fi

if [ -r PKGBUILD ]; then
    source PKGBUILD
else
    error "There is no PKGBUILD in dir"; exit 1
fi

if [ ! -d "$XDG_CONFIG_HOME/libretools" ]; then
    mkdir -p $XDG_CONFIG_HOME/libretools
fi

get_blacklist

check_deps

exit $ev