#!/bin/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.
#

realpath() {
  # Use in priority xpg4 awk or nawk on SunOS as standard awk is outdated
  AWK=awk
  if ${solaris}; then
      if [ -x /usr/xpg4/bin/awk ]; then
          AWK=/usr/xpg4/bin/awk
      elif [ -x /usr/bin/nawk ]; then
          AWK=/usr/bin/nawk
      fi
  fi

  READLINK_EXISTS=`command -v readlink &> /dev/null`
  BINARY_NAME=`basename "${1}"`
  if [ -z "$READLINK_EXISTS" ]; then
    OURPWD="`pwd`"
    cd "`dirname "${1}"`" || exit 2
    LINK=`ls -l "${BINARY_NAME}" | ${AWK} -F"-> " '{print $2}'`
    while [ "${LINK}" ]; do
        echo "link: ${LINK}" >&2
        cd "`dirname "${LINK}"`" || exit 2
        LINK=`ls -l "${BINARY_NAME}" | ${AWK} -F"-> " '{print $2}'`
    done
    REALPATH="`pwd`/${BINARY_NAME}"
    cd "${OURPWD}" || exit 2
    echo "${REALPATH}"
  else
    OURPWD="`pwd`"
    cd "`dirname "${1}"`" || exit 2
    LINK=`readlink "${BINARY_NAME}"`
    while [ "${LINK}" ]; do
        echo "link: ${LINK}" >&2
        cd "`dirname "${LINK}"`" || exit 2
        LINK=`readlink "${BINARY_NAME}"`
    done
    REALPATH="`pwd`/${BINARY_NAME}"
    cd "${OURPWD}" || exit 2
    echo "${REALPATH}"
  fi
}

REALNAME=`realpath "$0"`
DIRNAME=`dirname "${REALNAME}"`
PROGNAME=`basename "${REALNAME}"`

#
# Load common functions
#
. "${DIRNAME}/inc"

#
# Sourcing environment settings for karaf similar to tomcats setenv
#
KARAF_SCRIPT="${PROGNAME}"
export KARAF_SCRIPT
if [ -f "${DIRNAME}/setenv" ]; then
  . "${DIRNAME}/setenv"
fi

init() {
    # KARAF-5332: Unset KARAF_DEBUG
    unset KARAF_DEBUG

    # Determine if there is special OS handling we must perform
    detectOS

    # Locate the Karaf home directory
    locateHome
}

run() {
    convertPaths
    exec "${KARAF_HOME}/bin/karaf" status "$@"
}

main() {
    init
    run "$@"
}

main "$@"