path: root/sbt/sbt

#!/bin/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.
#

# This script launches sbt for this project. If present it uses the system 
# version of sbt. If there is no system version of sbt it attempts to download
# sbt locally.
SBT_VERSION=`awk -F "=" '/sbt\\.version/ {print $2}' ./project/build.properties`
URL1=http://typesafe.artifactoryonline.com/typesafe/ivy-releases/org.scala-sbt/sbt-launch/${SBT_VERSION}/sbt-launch.jar
URL2=http://repo.typesafe.com/typesafe/ivy-releases/org.scala-sbt/sbt-launch/${SBT_VERSION}/sbt-launch.jar
JAR=sbt/sbt-launch-${SBT_VERSION}.jar

printf "Checking for system sbt ["
if hash sbt 2>/dev/null; then 
  printf "FOUND]\n"
  # Use System SBT
  sbt "$@"
else
  printf "NOT FOUND]\n"
  # Download sbt or use already downloaded
  if [ ! -d .sbtlib ]; then
    mkdir .sbtlib
  fi
  if [ ! -f ${JAR} ]; then
    # Download
    printf "Attempting to fetch sbt\n"
    if hash curl 2>/dev/null; then
      curl --progress-bar ${URL1} > ${JAR} || curl --progress-bar ${URL2} > ${JAR}
    elif hash wget 2>/dev/null; then
      wget --progress=bar ${URL1} -O ${JAR} || wget --progress=bar ${URL2} -O ${JAR}
    else
      printf "You do not have curl or wget installed, please install sbt manually from http://www.scala-sbt.org/\n"
      exit -1
    fi
  fi
  if [ ! -f ${JAR} ]; then
    # We failed to download
    printf "Our attempt to download sbt locally to ${JAR} failed. Please install sbt manually from http://www.scala-sbt.org/\n"
    exit -1
  fi
  printf "Launching sbt from ${JAR}\n"
  java \
    -Xmx1200m -XX:MaxPermSize=350m -XX:ReservedCodeCacheSize=256m \
    -jar ${JAR} \
    "$@"
fi