#! /bin/sh
#
# Zoo file system
#
# Source of zoo can be found at
# ftp://ftp.ibiblio.org/pub/Linux/utils/compress/

ZOO=zoo

# Stupid zoo won't work if the archive name has no .zoo extension, so we
# have to make a symlink with a "better" name.  Also, zoo can create
# directories even if printing files to stdout, so it's safer to confine
# it to a temporary directory.
mklink ()
{
    TMPDIR="/tmp/mctmpdir-uzoo.$$"
    mkdir $TMPDIR || exit 1
    trap 'cd /; rm -rf $TMPDIR' 0 1 2 3 5 13 15
    ARCHIVE=$TMPDIR/tmp.zoo
    ln -sf "$1" "$ARCHIVE"
    cd $TMPDIR || exit 1
}

mczoofs_list ()
{
    mklink "$1"
    $ZOO lq "$ARCHIVE" | nawk -v uid=${UID-0} '
/^[^\ ]/ { next }
{
if (NF < 8)
    next
if ($8 ~ /^\^/)
    $8=substr($8, 2)
if ($6 > 50)
    $6=$6 + 1900
else
    $6=$6 + 2000
split($7, a, ":")
if ($8 ~ /\/$/)
    printf "drwxr-xr-x   1 %-8d %-8d %8d %s %2d %4d %02d:%02d %s\n", uid, 0, $1, $5, $4, $6, a[1], a[2], $8
else
    printf "-rw-r--r--   1 %-8d %-8d %8d %s %2d %4d %02d:%02d %s\n", uid, 0, $1, $5, $4, $6, a[1], a[2], $8
}' 2>/dev/null
    exit 0
}

mczoofs_copyout ()
{
    mklink "$1"
    # zoo only accepts name without directory as file to extract
    base=`echo "$2" | sed 's,.*/,,'`
    $ZOO xpq: "$ARCHIVE" "$base" > "$3"
    cd /
    exit 0
}

umask 077

cmd="$1"
shift
case "$cmd" in
  list) mczoofs_list "$@" ;;
  copyout) mczoofs_copyout "$@" ;;
  *) exit 1 ;;
esac
exit 0