Install and launch script for sbt, a Scala build tool

sbt

#!/bin/sh -e

if [ ! $SBT_VERSION ]; then SBT_VERSION=0.11.0; fi
if [ ! $SBT_DIR ]; then SBT_DIR=$HOME/.sbt; fi
if [ ! $SBT_FILENAME ]; then SBT_FILENAME=sbt-launch-$SBT_VERSION.jar; fi
if [ ! $SBT_LOCATION ]; then SBT_LOCATION=$SBT_DIR/$SBT_FILENAME; fi

if expr match $SBT_VERSION "0.7" > /dev/null;
then
    SBT_URL="http://simple-build-tool.googlecode.com/files/$SBT_FILENAME"
else
    SBT_URL="http://typesafe.artifactoryonline.com/typesafe/ivy-releases/org.scala-tools.sbt/sbt-launch/$SBT_VERSION/sbt-launch.jar"
fi

if [ ! -f $SBT_LOCATION ];
then
    echo "Could not find $SBT_FILENAME in $SBT_DIR, downloading..."
    mkdir -p $SBT_DIR
    if which wget > /dev/null; then
        CMD="wget --progress=bar $SBT_URL -O $SBT_LOCATION"
    elif which curl > /dev/null; then
        CMD="curl $SBT_URL -o $SBT_LOCATION"
    else
        echo "Could not find wget or curl."
        exit 1
    fi
    if ! $CMD; then
        echo "Failed retrieving $SBT_URL ... cleaning up."
        if [ -f $SBT_LOCATION ]; then rm -r $SBT_LOCATION; fi
        exit 1
   fi
fi

# Patch a broken dependency in SBT >= 0.10.0
COMMONS_LOGGING_DIR="$HOME/.m2/repository/commons-logging/commons-logging/1.0.4"
COMMONS_LOGGING_LOCATION="$COMMONS_LOGGING_DIR/commons-logging-1.0.4.jar"
COMMONS_LOGGING_URL="http://archive.apache.org/dist/commons/logging/binaries/commons-logging-1.0.4.tar.gz"
if [ ! -f $COMMONS_LOGGING_LOCATION ];
then
    echo "commons-logging 1.0.4 is missing, downloading..."
    mkdir -p $COMMONS_LOGGING_DIR
    if which curl > /dev/null; then
        GET="curl $COMMONS_LOGGING_URL"
    elif which wget > /dev/null; then
        GET="wget -qO- $COMMONS_LOGGING_URL"
    fi
    if ! $GET | tar -xzO "commons-logging-1.0.4/commons-logging.jar" > $COMMONS_LOGGING_LOCATION; then
        echo "Failed retrieving $COMMONS_LOGGING_URL ... cleaning up.  Will attempt to run SBT anyway."
        if [ -f $COMMONS_LOGGING_LOCATION ]; then rm -r $COMMONS_LOGGING_LOCATION; fi
    fi
fi

# Set SBT_OPTS in your shell profile or launch script.  A good default
# value is:
#
#     export SBT_OPTS="-Dfile.encoding=UTF8 -Xmx1536M -Xss1M -XX:+CMSClassUnloadingEnabled -XX:MaxPermSize=256m"
#

java $SBT_OPTS -jar $SBT_LOCATION "$@"

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