zsh/Completion/Unix/Command/_cdcd

#compdef cdcd

local expl

_cdcd_tracks ()
{
  local -a tracks
  tracks=( ${${(M)${(f)"$(cdcd tracks)"}:#(#s) #[0-9]##:*}/(#s) #(#b)([0-9]##):[ >]#? #[^ ]# #(*) ##/$match[1]:${match[2]}} )
  _describe tracks tracks -V tracks
}

_cdcd_commands ()
{
  local -a commands
  commands=(
    'play:play a track'
    'stop:stop playing'
    {open,eject}':eject the CD-ROM tray'
    'close:close the CD-ROM tray'
    'pause:pause playing'
    'resume:resume playing'
    'ff:fast forward'
    'rew:rewind'
    'next:advance one track'
    'prev:return to previous track'
    'getvol:get current volume settings'
    'setvol:set volume settings'
    'status:get numerical data regarding the CD status'
    'info:short information about the CD'
    'tracks:list all tracks on the CD'
    'rndplay:play a random track'
    'list:list all CDs in a CD-ROM changer'
    'slot:changes the current CD in the CD-ROM changer'
    'edit:edit information about the disc'
    'ext:Extended information about the disc'
    'refresh:refresh the information about the CD from a CDDB server'
    'device:change the CD-ROM device cdcd will use'
    'verbose:toggle verbosity'
    'sites:edit the server list'
    'access:configure cddb access method'
    'help:display a help message'
  )
  _describe -t commands 'cdcd command' commands
}

if (( CURRENT == 2 )); then
    _cdcd_commands
else
    case "$words[2]" in
	# sub-commands with no args
	stop|open|eject|close|pause|resume|next|prev|getvol)
	    ;&
	status|info|tracks|rndplay|list|slot|refresh)
	    _message 'no more arguments'
	    ;;
	# sub-commands with args that cannot be completed
	ff|rew|setvol)
	    ;;
	# sub-commands that do not work as expected
	access|edit|sites)
	    ;;
	# completeable sub-commands
	verbose)
	    _wanted subcommand expl 'verbose subcommand' compadd on off
	    ;;
	ext)
	    _values 'ext subcommand' \
	      'disc[extra information about the disc]' \
	      {1..${${(z)${${(f)"$(cdcd info)"}[3]}}[3]}}
	    ;;
	device)
	    _wanted device expl 'cdrom device' compadd /dev/cd* /dev/cd*/*
	    ;;
	play)
            _cdcd_tracks
	    ;;
	help)
	    _cdcd_commands;;
    esac
fi