# (C) 2010 magicant

# Completion script for the "chown" command.
# Supports POSIX 2008, GNU coreutils 8.4, FreeBSD 8.1, OpenBSD 4.8, NetBSD 5.0,
# Mac OS X 10.6.3, SunOS 5.10, HP-UX 11i v3.

function completion/chown {

        case $("${WORDS[1]}" --version 2>/dev/null) in
                (*'coreutils'*) typeset type=GNU ;;
                (*)             typeset type="$(uname 2>/dev/null)" ;;
        esac
        case $type in
                (GNU) typeset long=true ;;
                (*)   typeset long= ;;
        esac

        typeset OPTIONS POSIXOPTIONS ADDOPTIONS ARGOPT PREFIX
        POSIXOPTIONS=( #>#
        "h ${long:+--no-dereference}; change the owner of symbolic links"
        "H; follow symbolic links to directories in operands (with -R)"
        "L; follow all symbolic links to directories (with -R)"
        "P; don't follow any symbolic links (with -R)"
        "R ${long:+--recursive}; recursively change the owner of files in a directory"
        ) #<#

        ADDOPTIONS=()
        case $type in (GNU|*BSD|Darwin|SunOS)
                ADDOPTIONS=("$ADDOPTIONS" #>#
                "f ${long:+--silent --quiet}; suppress error messages"
                ) #<#
                case $type in (GNU|NetBSD|FreeBSD|Darwin)
                        ADDOPTIONS=("$ADDOPTIONS" #>#
                        "v ${long:+--verbose}; print a message for each file processed"
                        ) #<#
                esac
        esac
        case $type in
        (GNU)
                ADDOPTIONS=("$ADDOPTIONS" #>#
                "c --changes; print a message when a change has been made"
                "--dereference; change the owner of files referred to by symbolic links"
                "--from:; specify an owner:group only from which changes are made"
                "--no-preserve-root; cancel the --preserve-root option"
                "--preserve-root; don't recursively change the owner of the root directory"
                "--reference:; specify a file to whose owner changes are made"
                "--help"
                "--version"
                ) #<#
                ;;
        (FreeBSD)
                ADDOPTIONS=("$ADDOPTIONS" #>#
                "x; stop recursion when reaching a different file system"
                ) #<#
                ;;
        esac

        OPTIONS=("$POSIXOPTIONS" "$ADDOPTIONS")
        unset POSIXOPTIONS ADDOPTIONS

        typeset ownergroup=false
        command -f completion//parseoptions ${long:+-es}
        case $ARGOPT in
        (-)
                command -f completion//completeoptions
                ;;
        (--reference)
                complete -P "$PREFIX" -f
                ;;
        (--from)
                ownergroup=true
                ;;
        (*)
                command -f completion//getoperands
                if [ ${WORDS[#]} -eq 0 ]; then
                        ownergroup=true
                else
                        complete -f
                fi
                ;;
        esac
        if $ownergroup; then
                case ${TARGETWORD#"$PREFIX"} in
                (*:*)
                        PREFIX=$PREFIX${${TARGETWORD#"$PREFIX"}%%:*}:
                        complete -P "$PREFIX" -g
                        ;;
                (*)
                        complete -T -P "$PREFIX" -S : -u
                        ;;
                esac
        fi

}


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