systemd/shell-completion/zsh/_machinectl

#compdef machinectl

__get_available_machines () {
    machinectl --no-legend list-images | {while read -r a b; do echo $a; done;}
}

_available_machines() {
    local -a _machines
    _machines=("${(fo)$(__get_available_machines)}")
    typeset -U _machines
    if [[ -n "$_machines" ]]; then
        _describe 'machines' _machines
    else
        _message 'no machines'
    fi
}

(( $+functions[_machinectl_command] )) || _machinectl_command()
{
  local -a _machinectl_cmds
  _machinectl_cmds=(
    "list:List currently running VMs/containers"
    "status:Show VM/container status"
    "show:Show properties of one or more VMs/containers"
    "start:Start container as a service"
    "stop:Stop container (equal to poweroff)"
    "login:Get a login prompt on a VM/container"
    "enable:Enable automatic container start at boot"
    "disable:Disable automatic container start at boot"
    "poweroff:Power off one or more VMs/containers"
    "reboot:Reboot one or more VMs/containers"
    "terminate:Terminate one or more VMs/containers"
    "kill:Send signal to process or a VM/container"
    "copy-to:Copy files from the host to a container"
    "copy-from:Copy files from a container to the host"
    "bind:Bind mount a path from the host into a container"

    "list-images:Show available container and VM images"
    "image-status:Show image details"
    "show-image:Show properties of image"
    "clone:Clone an image"
    "rename:Rename an image"
    "read-only:Mark or unmark image read-only"
    "remove:Remove an image"

    "pull-tar:Download a TAR container image"
    "pull-raw:Download a RAW container or VM image"
    "list-transfers:Show list of downloads in progress"
    "cancel-transfer:Cancel a download"
  )

  if (( CURRENT == 1 )); then
    _describe -t commands 'machinectl command' _machinectl_cmds || compadd "$@"
  else
    local curcontext="$curcontext"
    cmd="${${_machinectl_cmds[(r)$words[1]:*]%%:*}}"
    if (( $#cmd )); then
      if (( CURRENT == 2 )); then
        case $cmd in
          list*|cancel-transfer|pull-tar|pull-raw)
            msg="no options" ;;
          start)
            _available_machines ;;
          *)
            _sd_machines
        esac
      else
        case $cmd in
          copy-to|copy-from|bind)
            _files ;;
          *) msg="no options"
        esac
      fi
    else
      _message "no more options"
    fi
  fi
}

_arguments \
  {-h,--help}'[Prints a short help text and exits.]' \
  '--version[Prints a short version string and exits.]' \
  '--no-pager[Do not pipe output into a pager.]' \
  '--no-legend[Do not show the headers and footers.]' \
  '--no-ask-password[Do not ask for system passwords.]' \
  {-H+,--host=}'[Operate on remote host.]:userathost:_sd_hosts_or_user_at_host' \
  {-M+,--machine=}'[Operate on local container.]:machine:_sd_machines' \
  {-p+,--property=}'[Limit output to specified property.]:property:(Name Id Timestamp TimestampMonotonic Service Scope Leader Class State RootDirectory)' \
  {-a,--all}'[Show all proerties.]' \
  {-q,--quiet}'[Suppress output.]' \
  {-l,--full}'[Do not ellipsize cgroup members.]' \
  '--kill-who=[Who to send signal to.]:killwho:(leader all)' \
  {-s+,--signal=}'[Which signal to send.]:signal:_signals' \
  '--read-only[Create read-only bind mount.]' \
  '--mkdir[Create directory before bind mounting, if missing.]' \
  {-n+,--lines=}'[Number of journal entries to show.]:integer' \
  {-o+,--output=}'[Change journal output mode.]:output modes:_sd_outputmodes' \
  '--verify=[Verification mode for downloaded images.]:verify:(no checksum signature)' \
  '--force[Download image even if already exists.]' \
  '*::machinectl command:_machinectl_command'