.zshrc.extends

_cachefile_updated_at() {
  echo $(stat -f "%c" .rake_tasks)
}

_rakefile_updated_at() {
  echo $(stat -f "%c" Rakefile)
}

_gemfile_updated_at() {
  echo $(stat -f "%c" Gemfile)
}

_generate_cachefile() {
  if [ -f .rake_tasks ]; then
    rm .rake_tasks
  fi
  rake --silent --tasks 2> /dev/null | cut  -f 2 -d " " > .rake_tasks
}

_rake() {
  if [ -f Rakefile ]; then
    if [ ! -f .rake_tasks ] || \
       [ `_cachefile_updated_at` -lt `_rakefile_updated_at` ] || \
       [ -f Gemfile -a `_cachefile_updated_at` -lt `_gemfile_updated_at` ]; then
      _generate_cachefile
    fi

    compadd `cat .rake_tasks`
  fi
}
compdef _rake rake