#!/bin/bash
#
#  ports
# 
#  Copyright (c) 2002-2004 Per Liden
# 
#  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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, 
#  USA.
#

VERSION="#VERSION#"
PORTS_DIR="/usr/ports"

check_ports_dir() {
	if [ ! -d "$PORTS_DIR" ]; then
		echo "$COMMAND: directory '$PORTS_DIR' not found"
		exit 1
	fi
}

update_ports() {
	if [ "`id -u`" != "0" ]; then
		echo "$COMMAND: only root can update ports"
		exit 1
	fi

	shopt -s nullglob
	export PORTS_DIR

	if [ "$OPT_COLLECTIONS" ]; then
		# Update selected collections
		for collection in $OPT_COLLECTIONS; do
			collection_exists=no
			for file in /etc/ports/$collection.*; do
				collection_exists=yes
			done
			if [ "$collection_exists" = "yes" ]; then
				for driver in /etc/ports/drivers/*; do
					if [ -x $driver ]; then
						suffix=`basename $driver`
						file=/etc/ports/$collection.$suffix
						if [ -f $file ]; then
							$driver $file
						fi
					fi
				done
			else
				echo "$COMMAND: collection '$collection' not found"
			fi
		done
	else
		# Update all collections
		for driver in /etc/ports/drivers/*; do
			if [ -x $driver ]; then
				suffix=`basename $driver`
				for file in /etc/ports/*.$suffix; do
					$driver $file
				done
			fi
		done
		
		if [ ! "$driver" ]; then
			echo "$COMMAND: no driver(s) installed"
		fi
	fi
}

list_ports() {
	cd $PORTS_DIR && find . -name Pkgfile -follow -printf "%h\n" | sed 's|^./||g' | sort
}

list_differences_at_exit() {
	rm $installed_list $ports_list $output $output_sorted &> /dev/null
}

list_differences() {
	installed_list=`mktemp` || exit 1
	ports_list=`mktemp` || exit 1
	output=`mktemp` || exit 1
	output_sorted=`mktemp` || exit 1
	found_diff="no"
	
	trap list_differences_at_exit EXIT
	
	pkginfo -i >> $installed_list
	ports -l >> $ports_list
	
	for package in `cat $installed_list | gawk '{ print $1 }'`; do
		installed_version=`cat $installed_list | grep "^$package " | gawk '{ print $2 }'`
		port_list=`cat $ports_list | grep "/$package\$"`
		for port in $port_list; do
			port_version=`cd $PORTS_DIR/$port; . Pkgfile; echo $version-$release`
			if [ "$installed_version" != "$port_version" ]; then
				echo "${port%/*} $package $port_version $installed_version" >> $output
				found_diff="yes"
			fi
		done
	done
	
	if [ "$found_diff" = "yes" ]; then
		echo "Collection Name Port Installed" >> $output_sorted
		sort $output >> $output_sorted
		column -t $output_sorted
	else
		echo "No differences found"
	fi
}

print_try_help() {
	echo "Try '$COMMAND --help' for more information."
}

print_help() {
	echo "usage: $COMMAND [options] [collection ...]"
	echo "options:"
	echo "   -u, --update    update ports"
	echo "   -l, --list      list ports"
	echo "   -d, --diff      list version differences"
	echo "   -v, --version   print version and exit"
	echo "   -h, --help      print help and exit"
}

parse_options() {
	OPT_MODE=""
	OPT_COLLECTIONS=""
	
	for OPT in "$@"; do
		case $OPT in
			-u|--update)
				OPT_MODE="update" ;;
			-l|--list)
				OPT_MODE="list" ;;
			-d|--diff)
				OPT_MODE="diff" ;;
			-v|--version)
				echo "$COMMAND $VERSION"
				exit 0 ;;
			-h|--help)
				print_help
				exit 0 ;;
			-*)
				echo "$COMMAND: invalid option $OPT"
				print_try_help
				exit 1 ;;
			*)
				OPT_COLLECTIONS="$OPT_COLLECTIONS $OPT" ;;
        esac
    done
}

main() {
	parse_options "$@"

	if [ "$OPT_MODE" = "update" ]; then
		check_ports_dir
		update_ports
	elif [ "$OPT_MODE" = "list" ]; then
		check_ports_dir
		list_ports
	elif [ "$OPT_MODE" = "diff" ]; then
		check_ports_dir
		list_differences
	else
		echo "$COMMAND: option missing"
		print_try_help
		exit 1
	fi

	exit 0
}

COMMAND=`basename $0`

main "$@"

# End of file
