_xattr

#compdef xattr
# zsh completion for OSX's xattr
#
# usage: xattr [-l] [-r] [-s] [-v] [-x] file [file ...]
#        xattr -p [-l] [-r] [-s] [-v] [-x] attr_name file [file ...]
#        xattr -w [-r] [-s] [-x] attr_name attr_value file [file ...]
#        xattr -d [-r] [-s] attr_name file [file ...]
#        xattr -c [-r] [-s] file [file ...]
#
# The first form lists the names of all xattrs on the given file(s).
# The second form (-p) prints the value of the xattr attr_name.
# The third form (-w) sets the value of the xattr attr_name to the string attr_value.
# The fourth form (-d) deletes the xattr attr_name.
# The fifth form (-c) deletes (clears) all xattrs.
#
# options:
#   -h: print this help
#   -l: print long format (attr_name: attr_value and hex output has offsets and
#       ascii representation)
#   -r: act recursively
#   -s: act on the symbolic link itself rather than what the link points to
#   -v: also print filename (automatic with -r and with multiple files)
#   -x: attr_value is represented as a hex string for input and output

local extra
local -a _xattr_options

_xattr_options=(
'(-w -d -c)-p[prints the value of the xattr attr_name]'
'(-p -d -c -v)-w[sets the value of the xattr attr_name to the string attr_value]'
'(-p -w -c -l -v -x)-d[deletes the xattr attr_name]'
'(-p -w -d -l -v -x)-c[deletes (clears) all xattrs]'
'(- *)-h[print help]'
'-l[print long format (attr_name: attr_value and hex output has offsets and ascii representation)]'
'-r[act recursively]'
'-s[act on the symbolic link itself rather than what the link points to]'
'-v[also print filename (automatic with -r and with multiple files)]'
'-x[attr_value is represented as a hex string for input and output]'
)

if [[ $words =~ 'p|d' ]]; then
	[[ ${words[$(($#words-1))]} =~ "^-" ]] && extra='(-)*:attribut name'
elif [[ $words =~ 'w' ]]; then
	[[ ${words[$(($#words-2))]} =~ "^-" || ${words[$(($#words-1))]} =~ "^-" ]] && extra=(':attribut name' '(-):attribut value')
fi
_arguments -s $_xattr_options ${extra:-'(-)*: :_files'}