# -*- mode: shell-script; coding: utf-8 -*-
#
# deb-tools
#
# Library of Debian package handling specific shell functions.
#
# Copyright (C) 2019 Elmar Hoffmann
#
# This program 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 2 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 General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
#

# Test whether package is installed (potentially with triggers still pending)
package_installed ()
{
    local package="$1"

    dpkg-query --showformat='${Status}\n' --show "${package}" 2>/dev/null \
	| grep --quiet '^[^[:space:]]\+[[:space:]]\+ok[[:space:]]\+\(installed\|triggers-pending\)$'
}

# Return architecture of package
package_architecture ()
{
    local package="$1"

    dpkg-query --showformat='${Architecture}\n' --show "${package}"
}

# Return version of package
package_version ()
{
    local package="$1"

    dpkg-query --showformat='${Version}\n' --show "${package}"
}
