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#compdef stat gstat zstat

# Notes:
# - @todo It would be nice to complete the -c/-f format strings some day
# - @todo It should be possible to complete NFS file handles on FreeBSD and
#   Dragonfly by parsing the output of `lsof -N`, but it's not available by
#   default — is there another way?

local expl variant ret=1
local -a context line state state_descr args aopts=( -A '-*' )
local -A opt_args

_pick_variant -r variant -b zsh gnu='Free Soft' $OSTYPE --version

case $variant in
  zsh)
    args=(
      "(-H)-A[assign the results to array, don't print]:array variable:_parameters -g '*array*'"
      - set1
      +device +inode +mode +nlink +uid +gid +rdev
      +size +atime +mtime +ctime +blksize +block +link
      "(-A)-H[assign the results to associative array, don't print]:associative array variable:_parameters -g '*association*'"
      '(:)-f[stat the specified file descriptor]:file descriptor:_file_descriptors'
      '(-s)-F[specify strftime(3) format string]: :_date_formats zsh'
      '(-s)-g[show times in GMT/UTC]'
      # Note that this has the *opposite* effect of other variants' -L option!
      "-L[don't dereference symbolic links; use lstat(2)]"
      '(-N)-n[always show names of files]'
      '(-n)-N[never show names of files]'
      '-o[print file modes in octal rather than decimal]'
      '-r[print raw data]'
      '-s[print mode, UID, GID, and times as strings]'
      '(-T)-t[always show type names]'
      '(-t)-T[never show type names]'
      '*: :_files'
      - set2
      '-l[list stat types]'
    )
    ;;
  gnu)
    aopts=( )
    args=(
      '*: :_files'
      '(: * -)--help[display help information]'
      '(: * -)--version[display version information]'
      '(-L --dereference)'{-L,--dereference}'[dereference symbolic links]'
      + '(d)' # Display options
      {-c+,--format=}'[display per the specified format string]:format string'
      {-f,--file-system}'[display file-system status instead of file status]'
      '--printf=[display as with -c, but interpret backslash escapes like printf(3)]'
      {-t,--terse}'[display in terse format]'
    )
    ;;
  darwin*|dragonfly*|*bsd*)
    args=(
      '*: :->files-or-handles'
      '(-H)-L[dereference symbolic links]'
      '-q[suppress error messages about lstat(2)/stat(2) failure]'
      + '(d)' # Primary display options
      '(-F)-f+[display per the specified format string]:format string'
      '-l[display in `ls -lT` format]'
      '(-F -t)-r[display in raw (numerical) format]'
      '(-F -t)-s[display in shell variable-assignment format]'
      '(-F)-x[display in verbose (Linux-style) format]'
      + D # Secondary display options
      '(-f -r -s -x)-F[append file type indicators (implies -l)]'
      '-n[suppress terminating newlines]'
      '(-r -s)-t+[specify strftime(3) format string]: :_date_formats'
    )
    ;| # MATCH AGAIN
  dragonfly*|freebsd*)
    args+=(
      + df
      '(-L)-H[treat arguments as hexadecimal-formatted NFS file handles]'
    )
    ;;
esac

(( $#args )) || args=( '*: :_files' )

_arguments -s -S $aopts : $args && ret=0

[[ $state == files-or-handles ]] &&
if [[ -n ${opt_args[(i)*--H]} ]]; then
  _message -e nfs-handles 'NFS file handle'
else
  _files && ret=0
fi

return ret