# (C) 2010 magicant

# Completion script for the "df" 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/df {

        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=( #>#
        "k; print figures in kilobytes (1024-byte units)"
        "P ${long:+--portability}; print in the portable format defined by POSIX"
        ) #<#

        ADDOPTIONS=()
        case $type in (GNU|*BSD|Darwin|SunOS|HP-UX)
                ADDOPTIONS=("$ADDOPTIONS" #>#
                "l ${long:+--local}; print info about local file systems only"
                ) #<#
                case $type in (GNU|*BSD|Darwin|SunOS)
                        ADDOPTIONS=("$ADDOPTIONS" #>#
                        "h ${long:+--human-readable}; print size using K, M, etc. for 1024^n"
                        ) #<#
                        case $type in (GNU|FreeBSD|NetBSD|Darwin|SunOS)
                                ADDOPTIONS=("$ADDOPTIONS" #>#
                                "a ${long:+--all}; print all file systems"
                                ) #<#
                                case $type in (GNU|FreeBSD|NetBSD|Darwin)
                                        ADDOPTIONS=("$ADDOPTIONS" #>#
                                        "m; print figures in megabytes (1048576-byte units)"
                                        ) #<#
                                        case $type in (GNU|FreeBSD|Darwin)
                                                ADDOPTIONS=("$ADDOPTIONS" #>#
                                                "H ${long:+--si}; print size using k, M, etc. for 1000^n"
                                                ) #<#
                                                case $type in (GNU|FreeBSD)
                                                        ADDOPTIONS=("$ADDOPTIONS" #>#
                                                        "T ${long:+--print-type}; print file system types"
                                                        ) #<#
                                                esac
                                        esac
                                        case $type in (FreeBSD|NetBSD|Darwin)
                                                ADDOPTIONS=("$ADDOPTIONS" #>#
                                                "g; print figures in gigabytes (1073741824-byte units)"
                                                ) #<#
                                                case $type in (FreeBSD|Darwin)
                                                        ADDOPTIONS=("$ADDOPTIONS" #>#
                                                        "b; print figures in 512-byte units"
                                                        ) #<#
                                                esac
                                        esac
                                esac
                        esac
                        case $type in (*BSD|Darwin)
                                ADDOPTIONS=("$ADDOPTIONS" #>#
                                "n; allow printing cached data that may be out of date"
                                ) #<#
                        esac
                esac
                case $type in (GNU|*BSD|Darwin|HP-UX)
                        ADDOPTIONS=("$ADDOPTIONS" #>#
                        "i ${long:+--inodes}; print inode information"
                        ) #<#
                esac
                case $type in (SunOS|HP-UX)
                        ADDOPTIONS=("$ADDOPTIONS" #>#
                        "b; print the size of free area in kilobytes"
                        "e; print the number of files free"
                        "F:; specify a file system type to print"
                        "g; print all the results of the statvfs function"
                        "n; print file system types"
                        "o:; specify options specific to file systems"
                        "v; print block counts"
                        "V; print full command lines"
                        ) #<#
                esac
        esac
        case $type in
        (GNU)
                ADDOPTIONS=("$ADDOPTIONS" #>#
                "B: --block-size:; specify the block size unit to print figures in"
                "--total; print the grand total after the normal output"
                "--no-sync; allow printing cached data that may be out of date"
                "--sync; don't use cached data that may be out of date"
                "x: --exclude-type:; specify a file system type not to print"
                "--help"
                "--version"
                ) #<#
                ;;
        (FreeBSD)
                ADDOPTIONS=("$ADDOPTIONS" #>#
                "c; print the grand total"
                ) #<#
                ;;
        (NetBSD)
                ADDOPTIONS=("$ADDOPTIONS" #>#
                "G; print all the results of the statvfs function"
                ) #<#
                ;;
        (Darwin)
                ADDOPTIONS=("$ADDOPTIONS" #>#
                "T:; specify a file system type to print"
                ) #<#
                ;;
        (SunOS)
                ADDOPTIONS=("$ADDOPTIONS" #>#
                "Z; print file systems in all zones"
                ) #<#
                ;;
        (HP-UX)
                ADDOPTIONS=("$ADDOPTIONS" #>#
                "f; print the number of blocks in the free list"
                "s; don't sync the file system data on the disk"
                ) #<#
                ;;
        esac
        case $type in
        (GNU|*BSD)
                ADDOPTIONS=("$ADDOPTIONS" #>#
                "t: ${long:+--type:}; specify a file system type to print"
                ) #<#
                ;;
        (*)
                POSIXOPTIONS=("$POSIXOPTIONS" #>#
                "t; include total counts in the output"
                ) #<#
                ;;
        esac

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

        command -f completion//parseoptions ${long:+-es}
        case $ARGOPT in
        (-)
                command -f completion//completeoptions
                ;;
        (B|--block-size)
                if command -vf completion//completeblocksize >/dev/null 2>&1 ||
                                . -AL completion/_blocksize; then
                        command -f completion//completeblocksize
                fi
                ;;
        (?|-?*)
                ;;
        (*)
                complete -f
                ;;
        esac

}


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