ruby-install.sh

#!/bin/bash

TARGET_VERSION=$1
LOCATION=$2

if [ "x"$TARGET_VERSION = "x-h" -o "x"$TARGET_VERSION = "x--help" -o "x"$LOCATION = "x" ]; then
    echo "[usage] ruby-install VERSION LOCATION"
    echo "  ex: ruby-install 1.9.3-p392 ~/local/ruby-1.9.3"
    exit 0
fi

cd $(dirname $0)
XBUILD_PATH=$(pwd)

if [ ! -d ./var/ruby-build ]; then
    (
        set -e
        mkdir -p var
        cd var
        git clone -q git://github.com/sstephenson/ruby-build.git ruby-build-repo
        cd ruby-build-repo
        PREFIX=$XBUILD_PATH/var/ruby-build ./install.sh >/dev/null 2>&1
    ) || (echo "failed to download ruby-build" && exit 1)
fi

./var/ruby-build/bin/ruby-build $TARGET_VERSION $LOCATION > /tmp/ruby-install.log 2>&1
RETVAL=$?
if [ $RETVAL != 0 ]; then
    echo "ruby-build failed. see log: /tmp/ruby-install.log"
    exit 1
fi

$LOCATION/bin/gem install --no-rdoc --no-ri bundler pry > /tmp/ruby-install-bundler.log 2>&1
RETVAL=$?
if [ $RETVAL != 0 ]; then
    echo "gem install failed. see log /tmp/ruby-install-bundler.log"
    exit 2
fi

echo "ruby $TARGET_VERSION successfully installed on $LOCATION"
echo "To use this ruby, do 'export PATH=$LOCATION/bin:\$PATH'."