#!/bin/sh
#
# Copyright (C) 2012, 2013, 2015-2017, 2021  Etersoft
# Copyright (C) 2012, 2013, 2015-2017, 2021  Vitaly Lipatov <lav@etersoft.ru>
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as published by
# the Free Software Foundation, either version 3 of the License, 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 Affero General Public License for more details.
#
# You should have received a copy of the GNU Affero General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
#

load_helper epm-query


# fill pkg_installed and pkg_noninstalled
separate_installed()
{
    pkg_installed=
    pkg_noninstalled=
    for i in "$@" ; do
        is_installed $i && pkg_installed="$pkg_installed $i" || pkg_noninstalled="$pkg_noninstalled $i"
    done
}

epm_installed_help()
{
    message 'epm installed - check presence of package(s)
Usage: epm installed [options] <package>
'
    get_help HELPOPT $SHAREDIR/epm-installed
}

epm_installed()
{
    case "$pkg_options" in
        -h|--help)          # HELPOPT: show this help
            epm_installed_help
            return
            ;;
        --virtual)          # HELPOPT: check if virtual package has an installed provider
            is_installed_virtual "$pkg_names"
            return
            ;;
        --real)             # HELPOPT: check if real (non-virtual) package is installed
            is_installed_real "$pkg_names"
            return
            ;;
    esac
    [ -n "$pkg_names" ] || fatal "is_installed: package name is missed"
    is_installed "$pkg_names"
}
