# umount(8) completion -*- shell-script -*-

# Just like COMPREPLY=(`compgen -W "${COMPREPLY[*]}" -- "$cur"`), only better!
#
# This will correctly escape special characters in COMPREPLY.
_reply_compgen_array()
{
# Create the argument for compgen -W by escaping twice.
#
# One round of escape is because we want to reply with escaped arguments. A
# second round is required because compgen -W will helpfully expand it's
# argument.
local i wlist
for i in ${!COMPREPLY[*]}; do
local q=$(quote "$(printf %q "${COMPREPLY[$i]}")")
wlist+=$q$'\n'
done

# We also have to add another round of escaping to $cur.
local ecur="$cur"
ecur="${ecur//\\/\\\\}"
ecur="${ecur//\'/\'}"

# Actually generate completions.
local oldifs=$IFS
IFS=$'\n' eval 'COMPREPLY=(`compgen -W "$wlist" -- "${ecur}"`)'
IFS=$oldifs
}

# Unescape strings in the linux fstab(5) format (with octal escapes).
__linux_fstab_unescape() {
eval $1="'${!1//\'/\047}'"
eval $1="'${!1/%\\/\\\\}'"
eval "$1=$'${!1}'"
}

# Complete linux fstab entries.
#
# Reads a file from stdin in the linux fstab(5) format; as used by /etc/fstab
# and /proc/mounts.
_linux_fstab()
{
COMPREPLY=()

# Read and unescape values into COMPREPLY
local fs_spec fs_file fs_other
local oldifs="$IFS"
while read -r fs_spec fs_file fs_other; do
if [[ $fs_spec = [#]* ]]; then continue; fi
if [[ $1 == -L ]]; then
local fs_label=${fs_spec/#LABEL=}
if [[ $fs_label != "$fs_spec" ]]; then
__linux_fstab_unescape fs_label
IFS=$'\0'
COMPREPLY+=("$fs_label")
IFS=$oldifs
fi
else
__linux_fstab_unescape fs_spec
__linux_fstab_unescape fs_file
IFS=$'\0'
[[ $fs_spec = */* ]] && COMPREPLY+=("$fs_spec")
[[ $fs_file = */* ]] && COMPREPLY+=("$fs_file")
IFS=$oldifs
fi
done

# Add relative paths to COMPREPLY
if [[ $cur && $cur != /* ]]; then
local realcur
[[ $cur == */ ]] && # don't let readlink drop last / from path
realcur="$( readlink -f "$cur." 2> /dev/null )/" ||
realcur=$( readlink -f "$cur" 2> /dev/null )
if [[ $realcur ]]; then
local dirrealcur= dircur= basecur
if [[ $cur == */* ]]; then
dirrealcur="${realcur%/*}/"
dircur="${cur%/*}/"
fi
basecur=${cur#"$dircur"}
local i n=${#COMPREPLY[@]}
for (( i=0; i < $n; i++ )); do
[[ "${COMPREPLY[i]}" == "$realcur"* ]] &&
COMPREPLY+=( $( cd "$dircur" 2> /dev/null &&
compgen -f -d -P "$dircur" \
-X "!${COMPREPLY[i]##"$dirrealcur"}" -- "$basecur" ) )
done
fi
fi

_reply_compgen_array
}

_umount()
{
local cur prev words cword
_init_completion || return

case "$prev" in
-t)
# FIXME: no<fstype>
local split=false
if [[ "$cur" == ?*,* ]]; then
prev="${cur%,*}"
cur="${cur##*,}"
split=true
fi
COMPREPLY=( $( compgen -W 'adfs affs autofs btrfs cifs coda
cramfs debugfs devpts efs ext2 ext3 ext4 fuse hfs hfsplus hpfs
iso9660 jfs minix msdos ncpfs nfs nfs4 ntfs ntfs-3g proc qnx4
ramfs reiserfs romfs squashfs smbfs sysv tmpfs ubifs udf ufs
umsdos usbfs vfat xfs' -- "$cur" ) )
_fstypes
$split && COMPREPLY=( ${COMPREPLY[@]/#/$prev,} )
return
;;
-O)
# argument required but no completions available
return
;;
esac

if [[ "$cur" == -* ]]; then
COMPREPLY=( $( compgen -W '-V -h -v -n -r -d -i -a -t -O -f -l
--no-canonicalize --fake' -- "$cur" ) )
[[ $COMPREPLY ]] && return
fi

if [[ -r /proc/mounts ]]; then
# Linux /proc/mounts is properly quoted. This is important when
# unmounting usb devices with pretty names.
_linux_fstab < /proc/mounts
else
local IFS=$'\n'
COMPREPLY=( $( compgen -W '$( mount | cut -d" " -f 3 )' -- "$cur" ) )
fi
} &&
complete -F _umount -o dirnames umount

# ex: ts=4 sw=4 et filetype=sh