JRuby launcher script to use in Warbler war files

jruby.sh

#!/bin/sh
#
# Simple script to launch JRuby using the components embedded in a war created by Warbler.
# Tell Warbler to put this script in /WEB-INF with this config/warble.rb code:
#
#   config.webinf_files += FileList["jruby.sh"]
#

HERE=`dirname $0`
GEM_HOME=$HERE/gems
GEM_PATH=$HERE/gems
PATH=$PATH:$GEM_HOME/bin

CLASSPATH=
for jar in $HERE/lib/*.jar; do
  if [ "$CLASSPATH" ]; then
    CLASSPATH="$CLASSPATH:$jar"
  else
    CLASSPATH="$jar"
  fi
done

# Launch JRuby using java
java -Xmx512m -cp $CLASSPATH org.jruby.Main "$@"