#compdef ant

_ant_does_target_list_need_generating () {
  [[ ! -f .ant_targets ]] && return 0
  [[ build.xml -nt .ant_targets ]] && return 0
  return 1
}

_ant () {
  if [[ ! -f build.xml ]]; then
    return
  fi

  if ! _ant_does_target_list_need_generating; then
    return
  fi

  ant -p | awk -F " " 'NR > 5 { print lastTarget } { lastTarget = $1 }' >| .ant_targets
  compadd -- "$(cat .ant_targets)"
}

_ant "$@"