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#compdef cryptsetup

function _cryptsetup_action {
	typeset -a 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
}

function _cryptsetup_device {
	typeset expl
	_wanted file expl device \
	_files
}

function _cryptsetup_mapping {
	typeset expl
	_wanted file expl 'mapping name' \
	_path_files -W /dev/mapper
}

function _cryptsetup_arguments {

	case ${words[1]} in

		create)
			_arguments ':mapping:_cryptsetup_mapping' ':device:_cryptsetup_device'
			;;

		remove|status|resize|luksClose|luksSuspend|luksResume)
			_arguments ': :_cryptsetup_mapping'
			;;

		luks(AddKey|RemoveKey|DelKey|UUID|Dump)|isLuks)
			_arguments ': :_cryptsetup_device'
			;;

		luks(Format|AddKey|RemoveKey|ChangeKey))
			_arguments ': :_cryptsetup_device' ':key file:_files'
			;;

		luksKillSlot)
			_arguments ': :_cryptsetup_device' ':key slot number'
			;;

		luksOpen)
			_arguments ': :_cryptsetup_device' ': :_cryptsetup_mapping'
			;;

	esac
}

function _cryptsetup {
	_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]:bytes' \
	'--new-keyfile-size[set new keyfile size (luksAddKey)]: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]: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]:milliseconds' \
	'(-q --batch-mode)'{-q,--batch-mode}'[do not ask for confirmation]' \
	'(-t --timeout)'{-t,--timeout}'[set password prompt timeout]:seconds' \
	'(-T --tries)'{-T,--tries}'[set maximum number of retries]:maximum retries' \
	'--align-payload[set payload alignment]:sectors' \
	'--uuid[set device UUID]:uuid' \
	'--version[show version information]' \
	':action:_cryptsetup_action' \
	'*::arguments:_cryptsetup_arguments'
}

_cryptsetup "$@"