Guardfile bash completion

guard.bash

# bash completion for Guard groups
#
# INSTALL
#
# Place in your bash completions.d and/or source in your .bash_profile
#
# USAGE
#
# Type 'guard' and hit tab twice to get completions.
# To clear the cache, run guard_cache_clear() in your shell.
#

function _guard_cache_path() {
  # If in a Rails app, put the cache in the cache dir
  # so version control ignores it
  if [ -e 'tmp/cache' ]; then
    prefix='tmp/cache/'
  fi
  echo "${prefix}.guard_t_cache"
}

function guard_cache_store() {
  grep group Guardfile | awk '{print $2}' | tr -d ':' > "$(_guard_cache_path)"
}

function guard_cache_clear() {
  rm -f .guard_t_cache
  rm -f tmp/cache/.guard_t_cache
}

# export COMP_WORDBREAKS=${COMP_WORDBREAKS/\:/}

function _guardcomplete() {
  # error if no guardfile
  if [ ! -e guardfile ]; then
    echo "missing Guardfile"
    return 1
  fi

  # build cache if missing
  if [ ! -e "$(_guard_cache_path)" ]; then
    guard_cache_store
  fi

  local groups=`awk '{print $1}' "$(_guard_cache_path)"`
  COMPREPLY=($(compgen -W "${groups}" -- ${COMP_WORDS[COMP_CWORD]}))
  return 0
}

complete -o default -o nospace -F _guardcomplete guard

# uncomment the following if you want the completion to be enabled with "bundle exec"
# complete -o default -o nospace -F _guardcomplete bundle exec guard

# uncomment the following if you like to alias "bundle exec" as "be"
# complete -o default -o nospace -F _guardcomplete be guard