epm-query

#!/bin/sh
#
# Copyright (C) 2012  Etersoft
# Copyright (C) 2012  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-packages

# TODO: combine with -qa (the difference only in return status now)

_query_via_packages_list()
{
	local res=0
	local firstpkg=$1
	shift
	# separate first line for print out command
	short=1 pkg_filenames=$firstpkg epm_packages | grep -- "^$firstpkg$" || res=1
	for pkg in "$@" ; do
		short=1 pkg_filenames=$pkg epm_packages 2>/dev/null | grep -- "^$pkg$" || res=1
	done
	return $res
}

__epm_query_file()
{
	local CMD

	[ -z "$*" ] && return

	case $PMTYPE in
		*-rpm)
			CMD="rpm -qp"
			;;
		apt-dpkg)
			CMD="dpkg-deb --show"
			# TODO: make rpm-like output
			#showcmd dpkg -l $pkg_filenames
			#dpkg -l $pkg_filenames | grep "^ii"
			#return
			;;
		*)
			fatal "Do not know command for query file package"
			;;
	esac

	docmd $CMD $@
}

__epm_query_name()
{
	local CMD

	[ -z "$*" ] && return

	case $PMTYPE in
		*-rpm)
			CMD="rpm -q"
			;;
		apt-dpkg)
			CMD="dpkg -l"
			# TODO: make rpm-like output
			#showcmd dpkg -l $pkg_filenames
			#dpkg -l $pkg_filenames | grep "^ii"
			#return
			;;
		npackd)
			CMD="npackdcl path --package=$@"
			;;
		brew)
			warning "fix query"
			return 1
			;;
		*)
			_query_via_packages_list $@
			return
			;;
	esac

	docmd $CMD $@
}

# check if pkg is installed
is_installed()
{
	#pkg_filenames="$@" epm_query >/dev/null
	epm installed $@ >/dev/null
}

# 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_query()
{
	[ -n "$pkg_filenames" ] || fatal "Run query without names"

	__epm_query_file $pkg_files || return

	__epm_query_name $pkg_names || return
}