#!/usr/bin/env bash
################################################################################
#  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.
################################################################################

target="$0"
# For the case, the executable has been directly symlinked, figure out
# the correct bin path by following its symlink up to an upper bound.
# Note: we can't use the readlink utility here if we want to be POSIX
# compatible.
iteration=0
while [ -L "$target" ]; do
    if [ "$iteration" -gt 100 ]; then
        echo "Cannot resolve path: You have a cyclic symlink in $target."
        break
    fi
    ls=`ls -ld -- "$target"`
    target=`expr "$ls" : '.* -> \(.*\)$'`
    iteration=$((iteration + 1))
done

# Convert relative path to absolute path and resolve directory symlinks
bin=`dirname "$target"`
SYMLINK_RESOLVED_BIN=`cd "$bin"; pwd -P`
NEXMARK_HOME=`dirname "$SYMLINK_RESOLVED_BIN"`
NEXMARK_LIB_DIR=$NEXMARK_HOME/lib
NEXMARK_QUERY_DIR=$NEXMARK_HOME/queries
NEXMARK_QUERY_DIR_VVP=$NEXMARK_HOME/queries-vvp
NEXMARK_LOG_DIR=$NEXMARK_HOME/log
NEXMARK_CONF_DIR=$NEXMARK_HOME/conf
NEXMARK_BIN_DIR=$NEXMARK_HOME/bin

### Exported environment variables ###
export NEXMARK_HOME
export NEXMARK_LIB_DIR
export NEXMARK_QUERY_DIR
export NEXMARK_QUERY_DIR_VVP
export NEXMARK_LOG_DIR
export NEXMARK_CONF_DIR
export NEXMARK_BIN_DIR
