#!/usr/bin/env sh
# Licensed to the Apache Software Foundation (ASF) under one
# or more contributor license agreements.  See the NOTICE file
# distributed with this work for additional information
# regarding copyright ownership.  The ASF licenses this file
# to you under the Apache License, Version 2.0 (the
# "License"); you may not use this file except in compliance
# with the License.  You may obtain a copy of the License at
#
#   http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing,
# software distributed under the License is distributed on an
# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
# KIND, either express or implied.  See the License for the
# specific language governing permissions and limitations
# under the License.


# a simple helper to get the current user
setCurrentUser(){
   CUSER="`whoami 2>/dev/null`"
   # Solaris hack
   if [ ! $? -eq 0 ]; then
      CUSER="`/usr/ucb/whoami 2>/dev/null`"
   fi
}

# get a canonical path, macosx and slowlaris does not support radlink -f :-)
pathCanonical() {
    local dst="${1}"
    while [ -h "${dst}" ] ; do
        ls=`ls -ld "${dst}"`
        link=`expr "$ls" : '.*-> \(.*\)$'`
        if expr "$link" : '/.*' > /dev/null; then
            dst="$link"
        else
            dst="`dirname "${dst}"`/$link"
        fi
    done
    local bas="`basename "${dst}"`"
    local dir="`dirname "${dst}"`"
    if [ "$bas" != "$dir" ]; then
      dst="`pathCanonical "$dir"`/$bas"
    fi
    echo "${dst}" | sed -e 's#//#/#g' -e 's#/\./#/#g' -e 's#/[^/]*/\.\./#/#g'
}


# a simple helper to get the activemq installation dir
getActiveMQHome(){
  # get the real path to the binary
  local REAL_BIN="`pathCanonical $0`"
  local REAL_DIR="`dirname $REAL_BIN`/../"
  REAL_DIR="`cd $REAL_DIR && pwd -P`"
  if [ -z "$REAL_DIR" ];then
      echo 'ERROR: unable to find real installtion path fo activemq, you have to define ACTIVEMQ_HOME manually in the config' >&2
      exit 1
  fi
  echo "$REAL_DIR/"

}

# Active MQ installation dir
if [ -z "$ACTIVEMQ_HOME" ] ; then
  ACTIVEMQ_HOME="`getActiveMQHome`"
fi

# Active MQ base dir
if [ -z "$ACTIVEMQ_BASE" ] ; then
  ACTIVEMQ_BASE="$ACTIVEMQ_HOME"
fi

# Configure user specified classpath here or externally using this variable
if [ -z "$ACTIVEMQ_USER_CLASSPATH" ] ; then
    ACTIVEMQ_USER_CLASSPATH=""
fi

# ActiveMQ Classpath configuration
ACTIVEMQ_CLASSPATH="$ACTIVEMQ_BASE/lib/*:$ACTIVEMQ_BASE/conf/:$ACTIVEMQ_USER_CLASSPATH"

ACTIVEMQ_DATA="$ACTIVEMQ_BASE/data/"


if [ -z "$JAVACMD" ] ; then
  if [ -n "$JAVA_HOME"  ] ; then
    if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
      # IBM's JDK on AIX uses strange locations for the executables
      JAVACMD="$JAVA_HOME/jre/sh/java"
    else
      JAVACMD="$JAVA_HOME/bin/java"
    fi
  else
    JAVACMD=java
  fi
fi


JAVA_ARGS=

exec "$JAVACMD" \
    $JAVA_ARGS \
    -classpath "$ACTIVEMQ_CLASSPATH" \
    -Dactivemq.data=${ACTIVEMQ_DATA} \
    $DEBUG_ARGS \
    org.apache.activemq.cli.kahadb.exporter.Exporter "$@"