#!/bin/bash

# NAME:
#   imagej
#
# PURPOSE:
#   This bash script offers a user-friendly command-line wrapper for 
#   the ImageJ program running under Mac OS X. The ImageJ folder 
#   distributed by the NIH must be located in the Applications folder 
#   on your Mac for the script to be used as is.
#
# MODIFICATION HISTORY:
#   Written by       Carl Salvaggio
#   January, 2013    Original Code
#
# DISCLAIMER:
#   This source code is provided "as is" and without warranties as to
#   performance or merchantability. The author and/or distributors of
#   this source code may have made statements about this source code.
#   Any such statements do not constitute warranties and shall not be
#   relied on by the user in deciding whether to use this source code.
#
#   This source code is provided without any express or implied warranties 
#   whatsoever. Because of the diversity of conditions and hardware under
#   which this source code may be used, no warranty of fitness for a
#   particular purpose is offered. The user is advised to test the source
#   code thoroughly before relying on it. The user must assume the entire
#   risk of using the source code.

function print_usage {
   echo ""
   echo "Usage: imagej [-v -h -b -p port_number] [image_filename]"
   echo ""
   echo "   Launches the ImageJ graphical interface from the command line"
   echo ""
   echo "   Options:"
   echo "      -v"
   echo "            verbose/debug mode [do not launch ImageJ]"
   echo "      -h"
   echo "            help [print this usage message]"
   echo "      -b"
   echo "            run ImageJ in the background"
   echo "      -p port_number"
   echo "            specify the port ImageJ uses to determine if"
   echo "            another instance is running; if an instance"
   echo "            is already running on that port, join that"
   echo "            instance, if not, create a new instance [the"
   echo "            default is 1]"
   echo ""
   echo "            NOTE: specifying a port of 0 does not check for"
   echo "                  another instance and just creates a new one"
   echo ""
}

OPTIND=1

verbose=0
background=0
port="1"

while getopts "vhbp:" opt; do
   case "$opt" in
      v)
         verbose=1
         ;;
      h)
         print_usage
         exit 0
         ;;
      b)
         background=1
         ;;
      p)
         port=$OPTARG
         ;;
   esac
done

shift $((OPTIND-1))

[ "$1" = "--" ] && shift

cmd="java -jar -Xmx1024m /Applications/ImageJ/ImageJ64.app/Contents/Resources/Java/ij.jar -ijpath /Applications/ImageJ"
cmd="$cmd -port$port"

image_filename=$@
if [ -f $image_filename ]; then
   cmd="$cmd $image_filename"
else
   if [ -n $image_filename ]; then
      echo "imagej: Specified image file does not exist"
      exit 1
   fi
fi

if [ $verbose -eq 1 ]; then
   echo "DEBUG DISPLAY"
   echo "   verbose = $verbose"
   echo "   background = $background"
   echo "   port = $port"
   echo "   image_filename = $image_filename"
   echo "COMMAND"
   echo "   $cmd"
else
   if [ $background -eq 1 ]; then
      $cmd &
   else
      $cmd
   fi
fi

exit 0