#!/bin/bash
#
# Copyright (C) 2009 "Cobra" from <http://www.openstreetmap.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 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 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/>.
#
#
# Startup-script for josm:
#   - gets always the newest version of josm-latest.jar
#   - backs up old versions (useful when the new one doesn't work properly)
#   - passes all arguments to josm - you can pass files to open with josm, e.g. 'josm trace0*.gpx trace10.gpx'
#   - sets environment variables, passes correct parameters to java and use alsa instead of oss
#
# configuration (just below these comments):
#   - change archive-directory if desired
#   - adjust number of desired backups
#   - do you use compiz? Then uncomment that line.
#   - adjust amount of RAM available to josm
#   - if you want to change or add some parameters for java look at the last line
#
# ToDo: 
#   - add possibility to configure a proxy and to select a certain version of java
#   - add possibility to select an older revision and run it
#   - detect automatically if compiz is running
#   - add some help (e.g. via --help)
#
 
# where should this script save josm-latest.jar to?
dir=~/bin/josm-archive
# how many old versions should be backed up?
numbackup=3
# fix for use with compiz, uncomment next line if you *do* use compiz
#export AWT_TOOLKIT=MToolkit
# how many memory should java assign to josm?
mem=1024M
 
# if $dir doesn't exist, create it (initial setup):
if [ -d $dir ]; then :
  else mkdir -p $dir; echo "directory $dir does not exist; creating it..."
fi
cd $dir
 
# get revision number of newest local version:
if ls josm-*.jar > /dev/null;
  then latestlocalrev=`ls josm*.jar | cut -d '-' -f 2 | cut -d '.' -f 1 | grep -v latest | tail -n 1`
  else latestlocalrev=0
fi
 
# get revision number of backed up versions
oldestrev=`ls josm*.jar | cut -d '-' -f 2 | cut -d '.' -f 1 | grep -v latest | head -n 1`
 
# count backed up versions
numsaved=`ls josm*.jar | grep -c ''`
 
# get revision number of "latest"
latestrev=`wget -qO - http://josm.openstreetmap.de/version | grep latest | cut -d ' ' -f 2`
 
# download current revision of "latest" if newest local revision is older than the current revision of "latest"
if [ $latestlocalrev -lt $latestrev ]
  then
    echo latest local version is $latestlocalrev, latest available version is $latestrev - starting download...
    wget -O $dir/josm-$latestrev.jar -N http://josm.openstreetmap.de/download/josm-latest.jar
    # delete oldest file if enough newer ones are present
    if [ $numsaved -gt $numbackup ]
      then rm $dir/josm-$oldestrev.jar
    fi
  else echo local version $latestlocalrev is already uptodate
fi
 
# start josm: use alsa instead of oss, enable 2D-acceleration, set maximum amount of memory used for josm to 1024MB and pass all arguments to josm:
cd $OLDPWD
echo starting josm...
# aoss java -jar -Xmx$mem -Dsun.java2d.opengl=true $dir/josm-$latestrev.jar $* &
java -jar -Xmx$mem $dir/josm-$latestrev.jar $* &