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#compdef cryptsetup

local curcontext="$curcontext" ret=1
local -a actions state line expl

_arguments \
  '(-v --verbose)'{-v,--verbose}'[enable verbose mode]' \
  '--debug[enable debug mode]' \
  '(-h --hash)'{-h,--hash}'[hash algorithm]:hash algorithm' \
  '(-c --cipher)'{-c,--cipher}'[set cipher]:cipher specification' \
  '(-y --verify-passphrase)'{-y,--verify-passphrase}'[query for password twice]' \
  '(-d --key-file)'{-d,--key-file}'[set keyfile]:key file:_files' \
  '(-l --keyfile-size)'{-l,--keyfile-size}'[set keyfile size]:size (bytes)' \
  '--new-keyfile-size[set new keyfile size (luksAddKey)]:size (bytes)' \
  '--master-key-file[set master key]:key file:_files' \
  '--dump-master-key[dump luks master key]' \
  '(--use-urandom)--use-random[use /dev/random to generate volume key]' \
  '(--use-random)--use-urandom[use /dev/urandom to generate volume key]' \
  '(-S --key-slot)'{-S,--key-slot}'[select key slot]:key slot' \
  '(-s --key-size)'{-s,--key-size}'[set key size]:size (bits)' \
  '(-b --size)'{-b,--size}'[force device size]:sectors' \
  '(-o --offset)'{-o,--offset}'[set start offset]:sectors' \
  '(-p --skip)'{-p,--skip}'[data to skip at beginning]:sectors' \
  '--readonly[set up read-only mapping]' \
  '(-i --iter-time)'{-i,--iter-time}'[set password processing duration]:duration (milliseconds)' \
  '(-q --batch-mode)'{-q,--batch-mode}'[do not ask for confirmation]' \
  '(-t --timeout)'{-t,--timeout}'[set password prompt timeout]:timeout (seconds)' \
  '(-T --tries)'{-T,--tries}'[set maximum number of retries]:number of retries' \
  '--align-payload[set payload alignment]:sectors' \
  '--uuid[set device UUID]:uuid' \
  '(- : *)--version[show version information]' \
  ':action:->actions' \
  '*::arguments:->action-arguments' && ret=0

case $state in
  actions)
    actions=(
      'create:create a mapping'
      'remove:remove an existing mapping'
      'status:report mapping status'
      'resize:resize an active mapping'
      'luksFormat:initialize a LUKS partition'
      'luksOpen:open LUKS partition'
      'luksClose:remove an existing mapping'
      'luksSuspend:suspend active device'
      'luksResume:resume suspended device'
      'luksAddKey:add a new key'
      'luksRemoveKey:remove a key'
      'luksChangeKey:change a key'
      'luksKillSlot:wipe key from slot'
      'luksUUID:print/change device UUID'
      'isLuks:check if device is a LUKS partition'
      'luksDump:dump header information'
      'luksHeaderBackup:store binary backup of headers'
      'luksHeaderRestore:restore header backup'
    )
    _describe action actions && ret=0
  ;;
  action-arguments)
    local -a args
    local mapping=':mapping:_path_files -W /dev/mapper'
    local device=':device:_files'
    case ${words[1]} in
      create) args=( $mapping $device );;
      luksKillSlot) args=( $device ':key slot number' );;
      luksOpen) args=( $device $mapping );;
      remove|status|resize|luksClose|luksSuspend|luksResume) args=( $mapping );;
      luks(AddKey|RemoveKey|DelKey|UUID|Dump)|isLuks) args=( $device );;
      luks(Format|AddKey|RemoveKey|ChangeKey))
	args=( $device ':key file:_files' )
      ;;
      luksHeader*) args=( $device '--header-backup-file:file:_files' );;
      *)
        _default
	return
      ;;
    esac
    _arguments $args && ret=0
  ;;
esac

return ret