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#! /bin/sh
#
# Written by andrey joukov
# (C) 1996 2:5020/337.13@fidonet.org
# Updated by christian.gennerat@alcatel.fr 1999
#            Andrew V. Samoilov <sav@bcs.zp.ua> 2000
# beta version 2.0
#
# rar and unrar can be found on http://www.rarlabs.com/

RAR=rar
UNRAR=$RAR

# Prefer unrar (freeware).  Try to find unrar in $PATH.
save_IFS="$IFS"; IFS=:
for dir in $PATH; do
    IFS="$save_IFS"
    test -z "$dir" && dir=.
    if test -x "$dir/unrar" -a -f "$dir/unrar"; then
	UNRAR="$dir/unrar"
	break
    fi
done

if [ ! -x $UNRAR -a -x $RAR ]; then
    UNRAR=$RAR
fi

mcrarfs_list ()
{
     $UNRAR v -c- -cfg- "$1" | gawk -v uid=`id -u` -v gid=`id -g` '
BEGIN { flag=0 }
/^-------/ { flag++; if (flag > 1) exit 0; next }
flag==1 {
    str = substr($0, 2)
    getline
    split($4, a, "-")
    if (index($6, "D") != 0)
	$6="drwxr-xr-x"
    else
	if (index($6, ".") != 0)
	    $6="-rw-r--r--"
    printf "%s 1 %s %s %d %02d/%02d/%02d %s ./%s\n", $6, uid, gid, $1, a[2], a[1], a[3], $5, str
}'
}

mcrarfs_copyin ()
{
# copyin by christian.gennerat@alcatel.fr
# preserve pwd. It is clean, but is it necessary?
    pwd=`pwd`
# Create a directory and copy in it the tmp file with the good name     
    mkdir "$3.dir"
    cd "$3.dir"
    di="${2%/*}"
# if file is to be written upper in the archive tree, make fake dir
    if test x"$di" != x"${2##*/}" ; then
        mkdir -p "$di"
    fi
    cp -fp "$3" "$3.dir/$2" 
    $RAR a "$1" "$2" >/dev/null
    cd "$pwd"
    rm -rf "$3.dir"
}

mcrarfs_copyout ()
{
    $UNRAR p -p- -c- -cfg- -inul "$1" "$2" > "$3"
}

mcrarfs_mkdir ()
{
# preserve pwd. It is clean, but is it necessary?
    pwd=`pwd`
# Create a directory and create in it a tmp directory with the good name     
    dir=`mktemp -d "${MC_TMPDIR:-/tmp}/mctmpdir-urar.XXXXXX"` || exit 1
    cd "$dir"
    mkdir -p "$2"  
# rar cannot create an empty directory    
    touch "$2"/.rarfs
    $RAR a -r "$1" "$2" >/dev/null
    $RAR d "$1" "$2/.rarfs" >/dev/null
    cd "$pwd"
    rm -rf "$dir"
}

mcrarfs_rm ()
{
    $RAR d "$1" "$2" >/dev/null
}

umask 077

cmd="$1"
shift

case "$cmd" in
  # Workaround for a bug in mc - directories must precede files to
  # avoid duplicate entries, so we sort output by filenames
  list)    mcrarfs_list    "$@" | sort -k 8 ;;
  rm)      mcrarfs_rm      "$@" ;;
  rmdir)   mcrarfs_rm      "$@" ;;
  mkdir)   mcrarfs_mkdir   "$@" ;;
  copyin)  mcrarfs_copyin  "$@" ;;
  copyout) mcrarfs_copyout "$@" ;;
  *) exit 1 ;;
esac
exit 0