Grails Environment Switching

.bash_profile

# GRAILS
GRAILS_CELLAR=/usr/local/Cellar/grails
GRAILS_BIN=/usr/local/bin/grails
GRAILS_START=/usr/local/bin/startGrails
GRAILS_DEBUG=/usr/local/bin/grails-debug
GRAILS_CURRENT=$GRAILS_CELLAR/current

usegrails() {
  gversion=$1
  if [ -d $GRAILS_CELLAR/$gversion ]; then
    if [ -d $GRAILS_CURRENT ]; then rm $GRAILS_CURRENT; fi && ln -s $GRAILS_CELLAR/$gversion $GRAILS_CURRENT
    if [ -d $GRAILS_CURRENT ]; then rm $GRAILS_BIN; fi && ln -s $GRAILS_CELLAR/current/libexec/bin/grails $GRAILS_BIN
    if [ -d $GRAILS_CURRENT ]; then rm $GRAILS_START; fi && ln -s $GRAILS_CELLAR/current/libexec/bin/startGrails $GRAILS_START
    if [ -d $GRAILS_CURRENT ]; then rm $GRAILS_DEBUG; fi && ln -s $GRAILS_CELLAR/current/libexec/bin/grails-debug $GRAILS_DEBUG
  else
    echo "Grails $gversion not found"
  fi
}

export GRAILS_HOME=$GRAILS_CURRENT/libexec
if [ ! -d $GRAILS_HOME ]; then
  usegrails 1.3.7
fi

install_grails.txt

brew versions grails
# Install 1.3.7
git checkout 232acd0 /usr/local/Library/Formula/grails.rb
brew install grails
# Install 2.0.3
git checkout af73ab0 /usr/local/Library/Formula/grails.rb
brew install grails
# Update bash profile
## See .bash_profile snippet
# Switch grails at the command line
usegrails 1.3.7