#!/bin/bash
#
# paclog-pkglist - Parse a log file into a list of currently installed packages
#
# Copyright (C) 2011 Dave Reisner <dave@archlinux.org>
#
# 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, see <http://www.gnu.org/licenses/>.

declare -r myname='paclog-pkglist'
declare -r myver='@PACKAGE_VERSION@'

export TEXTDOMAIN='pacman'
export TEXTDOMAINDIR='/usr/share/locale'
declare logfile=${1:-@localstatedir@/log/pacman.log}

usage() {
	printf 'usage:   %s [pacman log]\n' "$myname"
	printf 'example: %s @localstatedir@/log/pacman.log\n' "$myname"
	printf '\ndefaults to: @localstatedir@/log/pacman.log\n'
}

version() {
	printf "%s %s\n" "$myname" "$myver"
	echo 'Copyright (C) 2011 Dave Reisner <dave@archlinux.org>'
}

if [[ $1 ]]; then
	if [[ $1 = -@(h|-help) ]]; then
		usage
		exit 0
	elif [[ $1 = -@(V|-version) ]]; then
		version
		exit 0
	elif [[ ! -e $logfile ]]; then
		printf $"target not found: %s\n" "$1"
		exit 1
	fi
fi

<"$logfile" awk '
{
	action  = $3
	pkgname = $4
	pkgver  = $5
	upgver  = $7
}

NF == 5 && action == "installed" {
	gsub(/[()]/, "", pkgver)
	pkg[pkgname] = pkgver
	next
}

NF == 7 && action == "upgraded" {
	sub(/\)/, "", upgver)
	pkg[pkgname] = upgver
	next
}

NF == 5 && action == "removed" {
	pkg[pkgname] = -1
}

END {
	for (i in pkg) {
		if (pkg[i] != -1) {
			printf "%s %s\n",i,pkg[i]
		}
	}
}' | sort

# vim: set ts=2 sw=2 noet:
