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#compdef btrfs

local curcontext="$curcontext" curstate state line expl grp cmd cont shift ret=1
local -a cmds_1 cmds_2 cmds_3 cmds_4 cmds_5 cmds_6 cmds_7 cmds_8 cmds_9 cmds_10
local -a groups args

groups=( subvolume filesystem device scrub balance inspect-internal property
         quota qgroup replace rescue check restore send receive
         help version )
cmds_1=( create delete list snapshot get-default set-default find-new show sync help )
cmds_2=( df du show sync defragment resize label usage help )
cmds_3=( add delete remove ready scan stats usage help )
cmds_4=( start cancel resume status help )
cmds_5=( start pause cancel resume status )
cmds_6=( dump-{super,tree} {inode,logical,subvolid}-resolve min-dev-size rootid tree-stats help )
cmds_7=( get set list )
cmds_8=( enable disable rescan help )
cmds_9=( assign remove create destroy show limit help )
cmds_10=( start status cancel help )
cmds_11=( chunk-recover fix-device-size super-recover zero-log )

_arguments -C -A "-*" "$args[@]" \
  '(- *)--help[print help information]' \
  '(- *)--version[print version information]' \
  '(--version)1: :->groups' \
  '2: :->cmds' \
  '*:: :->args' && ret=0

while (( $#state )); do
  curstate=$state
  shift state
  case $curstate in
    groups)
      _wanted command-groups expl 'btrfs command group' compadd -a groups && ret=0
    ;;
    cmds)
      grp=${groups[(i)$words[2]*]}
      (( grp && grp <= 16 )) || return 1
      cont=${groups[grp]}
      curcontext="${curcontext%:*:*}:$service-${cont}:"
      if (( grp <= 11 )); then
        _wanted commands expl command compadd -a cmds_$grp && ret=0
        continue
      fi
    ;&
    args)
      if [[ $curstate != cmds ]]; then
        grp=${groups[(i)$words[1]*]}
        (( grp && grp <= 16 )) || return 1
        cont=${groups[grp]}
        if (( grp <= 11 )); then
          local group=cmds_$grp
          local cmd=${${(P)group}[(i)$words[2]*]}
          (( cmd )) || return 1
          cont+=:${${(P)group}[cmd]}
        else
          shift=1
        fi
        curcontext="${curcontext%:*:*}:$service-${cont/:/-}:"
      fi
      args=( '(-)--help[print help information]' )
      case ${cont} in
        subvolume:create)
          args+=(
            '*-i[add the newly created subvolume to a qgroup]:qgroup'
            '1:destination:->mounts'
          )
        ;;
        subvolume:delete)
          args+=(
            '(-c --commit-after -C --commit-each)'{-c,--commit-after}'[wait for transaction commit at the end of the operation]'
            '(-c --commit-after -C --commit-each)'{-C,--commit-each}'[wait for transaction commit after deleting each subvolume]'
            '(-v --verbose)'{-v,--verbose}'[verbose output of operations]'
            '1:subvolume:_files -/'
          )
        ;;
        subvolume:snapshot)
          args+=(
            '-r[readonly snapshot]'
            '*-i[assign to qgroup]:qgroup: _message "qgroup"'
            '1:source directory:_files -/'
            '2:snapshot name or destination:_files -/'
          )
        ;;
        subvolume:list)
          args+=(
            '-p[include parent ID in output]'
            '-a[include all subvolumes]'
            '-c[include ogeneration of the subvolume]'
            '-g[include generation of the subvolume]'
            '-o[include only subvolumes below the path]'
            '-u[include UUID of subvolume]'
            '-q[include parent UUID of subvolume]'
            '-R[include the uuid of the received snapshots]'
            '-t[print results as a table]'
            '-s[list only snapshot subvolumes]'
            '-r[list only readonly subvolumes]'
            '-d[list deleted subvolumes that are not yet cleaned]'
            '-G[subvolume generation is more or less than]:gen: _guard "(|+|-)[0-9]#"'
            '-C[subvolume ogeneration is more or less than]:ogen: _guard "(|+|-)[0-9]#"'
            '--sort=-[list in order]:order:_sequence compadd - rootid gen ogen path'
            '1:path:->mounts'
          )
        ;;
        subvolume:set-default) args+=( '1:id:_guard "[0-9]#" id' '2:path:->mounts' );;
        subvolume:show)
          args+=(
            '(-r --rootid)'{-r,--rootid}'[rootid of the subvolume]'
            '(-u --uuid)'{-u,--uuid}'[uuid of the subvolume]'
            '1:subvolume path:_directories'
          )
        ;;
        subvolume:sync) args+=( '-s[sleep between checks]:delay (seconds) [1]' );;
        subvolume:find-new) args+=( '1:subvol:_files -/' '2:lastgen: _message "last gen"' );;
        (device|filesystem|qgroup):(df|du|show|usage))
          args+=(
            '--iec[use 1024 as a base]'
            '--si[use 1000 as a base]'
          )
        ;|
        (device|filesystem):(df|usage))
          args+=(
            '(-b --raw)'{-b,--raw}'[output raw numbers in bytes]'
            '(-h --human-readable -H)'{-h,--human-readable}'[output human friendly numbers, base 1024]'
            '(-h --human-readable -H)-H[output human friendly numbers, base 1000]'
            '(-k --kbytes)'{-k,--kbytes}'[show sizes in KiB, or kB with --si]'
            '(-m --mbytes)'{-m,--mbytes}'[show sizes in MiB, or MB with --si]'
            '(-g --gbytes)'{-g,--gbytes}'[show sizes in GiB, or GB with --si]'
            '(-t --tbytes)'{-t,--tbytes}'[show sizes in TiB, or TB with --si]'
          )
        ;|
        (filesystem|qgroup):(du|show))
          args+=(
            '--raw[output raw numbers in bytes]'
            '--human-readable[output human friendly numbers, base 1024]'
            '--kbytes[show sizes in KiB, or kB with --si]'
            '--mbytes[show sizes in MiB, or MB with --si]'
            '--gbytes[show sizes in GiB, or GB with --si]'
            '--tbytes[show sizes in TiB, or TB with --si]'
          )
        ;|
        filesystem:resize) args+=( '1:size:_guard "(|+|-)[0-9]#[GKM]"' '2:path:->mounts' );;
        filesystem:defragment)
          args+=(
            '-v[verbose]'
            '-r[defragment files recursively]'
            '-c+[compress files while defragmenting]::compression algorithm:(zlib lzo zstd)'
            '-r[defragment files recursively]'
            '-f[flush after defragmenting]'
            '-s[start position]:byte position'
            '-l[defragment limited number of bytes]:length (bytes)'
            '-t[defragment only files over a certain size]:minimum size (bytes) [32M]'
            '*:file:_files'
          )
        ;;
        filesystem:du) args+=( '(-s --summarize)'{-s,--summarize}'[display only a total for each argument]' );;
        filesystem:label) args+=( '1:device:_files -g "*(-%)"' '2:new label' );;
        filesystem:show)
          args+=(
            '(1 -)'{-d,--all-devices}'[scan all devices in /dev]'
            '(1 -)'{-m,--mounted}'[show only mounted filesystems]'
            '--raw[output raw numbers in bytes]'
            '--human-readable[output human friendly numbers, base 1024]'
            '1: :_guard "^-*" uuid or label'
          )
        ;;
        filesystem:usage) args+=( '-T[show data in tabular format]' );;
        device:(add|delete|ready|remove))
          args+=(
            '1:device:_files -g "*(-%)"'
            '2:path:->mounts'
            )
          [[ ${${(P)group}[cmd]} == add ]] &&
            args+=(
              {-K,--nodiscard}"[don't perform discard]"
              {-f,--force}'[force overwrite of existing filesystem]'
            )
        ;;
        device:scan) args+=( '(1 -)'{-d,--all-devices}'[scan all devices in /dev]' '1:device:_files -g "*(-%)"' );;
        device:stats)
          args+=(
            '(-c --check)'{-c,--check}'[return non-zero if any stat counter is not zero]'
            '(-z --reset)'{-z,--reset}'[reset stats when done]'
            "1:device or mountpoint:_files -g '*(-%,/)'"
          )
        ;;
        device:ready) args+=( '1:device: _files -g "*(-%)"' );;
        scrub:(start|resume))
          args+=(
            "-B[don't background and print statistics at end]"
            '-d[print separate statistics for each device]'
            '-q[omit error message and statistics]'
            '-r[read only mode]'
            '-R[raw print mode]'
            '-c[set ioprio class]:class:(( 0\:none 1\:realtime 2\:best-effort 3\:idle))'
            '-n[set ioprio classdata]:classdata:(0 1 2 3 4 5 6 7)'
            '1:path or device:_files'
          )
          [[ ${${(P)group}[cmd]} == start ]] && args+=(
            '-f[force starting new scrub even if a scrub is already running]'
          )
        ;;
        scrub:cancel) args+=( '1: : _guard "^-*" "path or device"' );;
        scrub:status)
          args+=(
            '-d[separate statistics for each device]'
            '-R[print raw stats]'
            '1:path or device:_files'
          )
        ;;
        balance:start)
          args+=(
            '(-m -s)-d+[act on data chunks]:filter:->filters'
            '(-d -s)-m+[act on metadata chunks]:filter:->filters'
            '(-d -m)-s+[act on system chunks (only under -f)]:filters:->filters'
            '-v[verbose mode]'
            '-f[force reducing of metadata integrity]'
            "--full-balance[don't print warning and don't delay start]"
            '(--background --bg)'{--background,--bg}'[run balance operation asynchronously in the background]'
            '1:path:_files -/'
          )
        ;;
        balance:status) args+=( '-v[verbose mode]' '1:path:_files -/' );;
        balance:(pause|cancel|resume)) args+=( '1:path:_files -/' );;
        property:set) args+=( '3:value' );&
        property:get) args+=( '2:property:(ro label compression)' );&
        property:list)
          args+=(
            '-t[specify object type]:object type:(subvol filesystem inode device)'
            '1:object'
          )
        ;;
        quota:(enable|disable)) args+=( '1:path:_files -/' );;
        quota:rescan)
          args+=(
            '-s[show status of currently running rescan]'
            '-w[wait for rescan to finish]'
            '1:path:_files -/'
          )
        ;;
        qgroup:(assign|remove)) args+=( '1:source path:_files -/'
          '2:destination path:_files -/' '3:path:_files -/' );|
        qgroup:assign) args+=( \!--rescan
          "--no-rescan[don't do a rescan, even if the assignment will make the quotas inconsistent]" )
        ;;
        qgroup:(create|destroy)) args+=( '1:qgroupid:' '2:path:_files -/' );;
        qgroup:show)
          args+=(
            '-p[print parent qgroup id]'
            '-c[print child qgroup id]'
            '-r[print max referenced size of qgroup]'
            '-e[print max exclusive size of qgroup]'
            '-F[list impacted qgroups \(include ancestral qgroups\)]'
            '-f[list impacted qgroups \(exclude ancestral qgroups\)]'
            '--sort=-[sort qgroups]:sort:_values -s , sort \
              qgroupid rfer excl max_rfer max_excl'
            '--sync[do filesystem sync before getting information]'
            '1:path:_files -/'
          )
        ;;
        qgroup:limit)
          args+=(
            '-c[limit amount of data after compression]'
            '-e[limit space exclusively to qgroup]'
            ': :_guard "^-*" "size or none"'
            ':qgroup id or path:_files -/'
            ':path:_files -/'
          )
        ;;
        replace:start)
          args+=(
            '-r[read from specified source device only]:srcdev:_files'
            '-f[force overwriting of target]'
            "-B[don't background]"
            ':srcdev or devid:_files'
            ':target:_files'
            ':path:->mounts'
          )
        ;;
        replace:status) args+=( '-1[print once rather than continuously]' ':path:->mounts' );;
        replace:cancel) args+=( ':path:->mounts' );;
        inspect*:dump-tree)
          args+=(
            '(-e --extents)'{-e,--extents}'[print only extent info: extent and device trees]'
            '(-d --device)'{-d,--device}'[print only device info: tree root, chunk and device trees]'
            '(-r --roots)'{-r,--roots}'[print only short root node info]'
            '(-R --backups)'{-R,--backups}'[same as --roots plus print backup root info]'
            '(-u --uuid)'{-u,--uuid}'[print only the uuid tree]'
            '(-b --block)'{-b,--block}'[print info from the specified block only]:block'
            '(-t --tree)'{-t,--tree}'[print only tree with the given id (string or number)]:tree id'
            '--follow[use with -b, to show all children tree blocks of the block]'
          )
        ;;
        inspect*:dump-super)
          args+=( \!-s:byte\ number '!-i:super:(0 1 2)'
            '(-f --full)'{-f,--full}'[print full superblock information, backup roots etc.]'
            '(-a --all)'{-a,--all}'[print information about all superblocks]'
            '(-s --super)'{-s,--super}'[specify which copy to print out]:super:(0 1 2)'
            '(-F --force)'{-F,--force}'[attempt to dump superblocks with bad magic]'
            '--bytenr[specify alternate superblock offset]:offset'
          )
        ;;
        inspect*:inode*) args+=( '-v[verbose mode]' '1:inode:_files' '2:path:_files -/' );;
        inspect*:subvol*) args+=( '-v[verbose mode]' '1:subvolid:_guard "[0-9]#" subvolume id' '2:path:_files -/' );;
        inspect*:logical*)
          args+=(
            '-v[verbose mode]'
            '-P[skip the path resolving and print the inodes instead]'
            '-s[specify buffer size]:buffer size [4096]'
            '1:logical address:_files'
            '2:filesystem path:_files -/'
          )
        ;;
        inspect*:min*) args+=( '--id[specify the device id to query]:device id [1]' );;
        inspect*:rootid) args+=( '1:path:_files -/' );;
        inspect*:tree*) args+=( '-b[print raw numbers in bytes]' );;
        rescue:(chunk|super)-recover)
          args+=(
            '-y[assume yes to every question]'
            '-v[verbose mode]'
            '1:device:_files'
          )
          [[ ${${(P)group}[cmd]} == chunk-recover ]] && args+=('(-)-h[display help]')
        ;;
        subvolume:get-default) ;&
        *:sync) ;&
        *:df) args+=( '1:path:->mounts' );;
        check)
          args+=( \!--readonly
            '(-s --super)'{-s,--super}'[specify superblock]:superblock'
            '(-b --backup)'{-b,--backup}'[use the backup root copy]'
            '(-r --tree-root)'{-r,--tree-root}'[use specified byte number for the tree root]:byte number'
            '--chunk-root[ use the given offset for the chunk tree root]:byte offset'
            '--repair[try to repair the filesystem]'
            '--force[skip mount checks, repair is not possible]'
            '--mode[select memory/IO trade-off]:mode:(original lowmem)'
            '--init-csum-tree[create a new CRC tree]'
            '--init-extent-tree[create a new extent tree]'
            '--clear-space-cache[clear space cache for v1 or v2]:version:(v1 v2)'
            '--check-data-csum[verify checksums of data blocks]'
            '(-Q --qgroup-report)'{-Q,--qgroup-report}'[verify qgroup accounting and compare against filesystem accounting]'
            '(-E --subvol-extents)'{-E,--subvol-extents}'[show extent state for the given subvolume]:subvolume id'
            '(-p --progress)'{-p,--progress}'[indicate progress at various checking phases]'
            '1:path:_files -/'
          )
        ;;
        restore)
          args+=(
            '(-s --snapshots)'{-s,--snapshots}'[get snapshots]'
            '(-x --xattr)'{-x,--xattr}'[restore extended attributes]'
            '(-m --metadata)'{-m,--metadata}'[restore owner, mode and times]'
            '(-S --symlink)'{-S,--symlink}'[restore symbolic links]'
            '(-v --verbose)'{-v,--verbose}'[be verbose and output what is restored]'
            '(-i --ignore-errors)'{-i,--ignore-errors}'[ignore errors]'
            '(-o --overwrite)'{-o,--overwrite}'[overwrite directories and files]'
            '-t[specify tree location]:tree root'
            '-f[specify filesystem location]:byte offset'
            '(-u --super)'{-u,--super}'[use specified superblock mirror]:mirror:(0 1 2)'
            '(-r --root)'{-r,--root}'[specify root objectid]:root id'
            '-d[find directory]'
            '(-l --list-roots)'{-l,--list-roots}'[list tree roots]'
            '(-D --dry-run)'{-D,--dry-run}'[dry run (only list files that would be recovered)]'
            '--path-regex[restore only filenames matching regex]:regex'
            '-c[ignore case (--path-regex only)]'
            '1:device:_files -/'
            '2:path:_files -/'
          )
        ;;
        send)
          args+=(
            '*-v[verbose mode]'
            '-e[if sending multiple subvolumes at once, use the new format]'
            '-p[send incremental stream]:parent:_files -/'
            '*-c[use snapshot as clone source]:clone:_files -/'
            '-f[specify output file]:file:_files'
            '--no-data[send in NO_FILE_DATA mode]'
            '(-v --verbose)'{-v,--verbose}'[enable verbose output]'
            '(-q --quiet)'{-q,--quiet}'[suppress all messages except errors]'
            '1:subvolume:_files -/'
          )
        ;;
        receive)
          args+=(
            '*-v[verbose mode]'
            '-f[input file]:file: _files'
            '-e[terminate after <end cmd>]'
            '(-C --chroot)'{-C,--chroot}'[confine the process to destination path using chroot(1)]'
            '(-E --max-errors)'{-E,--max-errors}'[terminate as soon as specified number of errors occur]:errors [1]'
            '(--dump)-m[specify root mount point of the destination filesystem]:mount point:_directories'
            '(-m)--dump[dump stream metadata, one line per operation]'
            '1:mount:->mounts'
          )
        ;;
        h(|e(|l(|p)))) args+=( '--full[display detailed help]' );;
        *) args+=( '*: :_default' );; # fallback for unknown subcommands
      esac
      if ! (( shift )); then
        shift words
        (( CURRENT-- ))
      fi
      _arguments -C "$args[@]" && ret=0
    ;;
    mounts)
      _wanted mount-points expl 'mount point' compadd \
          ${${${(M)${(f)"$(</etc/mtab)"}:#*btrfs*}#* }%% *} && ret=0
    ;;
    filters)
      state=()
      _values -s , filter \
        'profiles[balance only block groups in given replication profiles]:profile:->profiles' \
        'usage[balance block groups with usage below percentage]:percentage' \
        'devid[limit by device ID]:device ID' \
        'drange[balance block groups overlapping byte range]:range' \
        'vrange[balance block groups overlapping byte range in virtual address space]:range' \
        'convert[convert block groups to given profile]:profile:->profiles' \
        'soft[leave chunks that already have target profile]' && ret=0
      state=( $state )
    ;;
    profiles)
      compset -P '*\|'
      _values -s ',' profile raid0 raid1 raid5 raid6 raid10 dup single && ret=0
    ;;
  esac
done

return ret
debug log:

solving cc42dd153 ...
found cc42dd153 in https://git.vuxu.org/mirror/zsh/

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