#!/bin/sh

# resolve links - $0 may be a softlink
if [ -z "$JESS_HOME" ]; then  
  PRG="$0"

  while [ -h "$PRG" ]; do
    ls=`ls -ld "$PRG"`
    link=`expr "$ls" : '.*-> \(.*\)$'`
    if expr "$link" : '.*/.*' > /dev/null; then
      PRG="$link"
    else
      PRG=`dirname "$PRG"`/"$link"
    fi
  done
  PRGDIR=`dirname "$PRG"`
  JESS_HOME=`cd "$PRGDIR/.." ; pwd`
fi

# Make sure the jar file is there
if [ ! -f "$JESS_HOME/lib/jess.jar" ]; then
  echo 
  echo A required file, \"$JESS_HOME/lib/jess.jar\", is missing.
  echo Please correct the situation and try again.
  echo
  exit
fi

# Figure out where Java is
if [ -n "$JAVA_HOME" ]; then
  JAVA=$JAVA_HOME/bin/java
else
  JAVA=java
fi

# Make sure Java is executable
if  ! which $JAVA > /dev/null 2>&1 ; then
  echo 
  echo \"$JAVA\" is not an executable program or is not on your path.
  echo Please set the JAVA_HOME environment variable and try again.
  echo
  exit
fi

# Actually run Jess
${JAVA} -classpath .:${JESS_HOME}/lib/jess.jar:${JESS_HOME}/lib/jsr94.jar:${CLASSPATH} jess.Main $*