Readme.md

Ruby Language Pack

compile

#!/usr/bin/env bash
# bin/compile <build-dir> <cache-dir>
set -eo pipefail

BIN_DIR=$(cd $(dirname $0); pwd) # absolute path
BUILD_DIR=$1
CACHE_DIR=$2

export GEM_HOME=vendor/bundle/ruby/1.9.1
export GEM_PATH=$GEM_HOME
export HOME=$BUILD_DIR
export LANG=en_US.UTF-8
export PATH=$GEM_HOME/bin:$MY_RUBY_HOME/bin:/usr/local/bin:/usr/bin:/bin # MY_RUBY_HOME for rvm silliness

prefer() {
  NAME=${!#} # last arg => name of alias/program
  BIN=$(which $* | head -1 || true)
  eval "$NAME() { $BIN \"\$@\"; }; declare -fx $NAME;"
}
prefer gsed sed

abort()   { echo $*; exit 1; }
topic()   { echo "----->" $*; }
msg()     { echo "      " $*; }
err()     { echo " !    " $*; }
indent()  { sed -u "s/^/       /"; }

cd $BUILD_DIR

NAME=$($BIN_DIR/detect $BUILD_DIR) || { err no Ruby app detected; exit 1; }
topic $NAME app detected

topic Installing bundler using $(ruby -v | cut -d" " -f1-2) and gem $(gem --version)...
gem install bundler --pre --no-rdoc --no-ri 2>&1 | logger -t $LOG_TAG
sed -i -e 's/^#!.*ruby$/#!\/usr\/bin\/env ruby/g' vendor/bundle/ruby/1.9.1/bin/bundle # normalize shebang

topic Installing dependencies using $(bundle --version)
BUNDLE_CMD="bundle install --without development:test --deployment"
msg Running: $BUNDLE_CMD
eval $BUNDLE_CMD | indent

msg Cleaning up the bundler cache
bundle clean

detect

#!/usr/bin/env bash
# bin/detect <build-dir>

BUILD_DIR=$1

abort() { echo $*; exit 1; }
quit()  { echo $*; exit 0; }

[ -f $BUILD_DIR/Gemfile ]               || abort fatal: no Ruby app detected
[ -f $BUILD_DIR/config/application.rb ] && quit  Ruby/Rails3
[ -f $BUILD_DIR/config/environment.rb ] && quit  Ruby/Rails2
[ -f $BUILD_DIR/config.ru ]             && quit  Ruby/Rack
quit Ruby

release

#!/usr/bin/env bash
# bin/release <build-dir>

BIN_DIR=$(dirname $0)
BUILD_DIR=$1
NAME=$($BIN_DIR/detect $BUILD_DIR) || { err no Ruby app detected; exit 1; }

cat <<EOF
---
language_pack: $NAME
config_vars:
  GEM_PATH: vendor/bundle/ruby/1.9.1
  LANG: en_US.UTF-8
  PATH: bin:vendor/bundle/ruby/1.9.1/bin:/usr/local/bin:/usr/bin:/bin
  RACK_ENV: production
process_types:
  web: bundle exec rackup config.ru -p \$PORT
  console: bundle exec irb
EOF