#! /bin/sh

#
# ARC Virtual filesystem executive
# Copyright (C) 2008 Jacques Pelletier
# May be distributed under the terms of the GNU Public License
# <jpelletier@ieee.org>
#

# Define which archiver you are using with appropriate options
ARC_LIST="arc v"
ARC_GET="arc x"
ARC_PUT="arc a"
ARC_DEL="arc d"

# The 'list' command executive

mc_arc_fs_list()
{
    if [ "x$UID" = "x" ]; then
        UID=`id -ru 2>/dev/null`
        if [ "x$UID" = "x" ]; then
            UID=0
        fi
    fi
    $ARC_LIST "$1" | mawk -v uid=$UID '
BEGIN { }
/^Name/ { next }
/===/ { next }
/^Total/ { next }
{
        if ($8 > 50)
        $8=$8 + 1900
        else
        $8=$8 + 2000

        split($9, a, ":")

        # convert AM/PM to 00-23
        if (a[2] ~ /a$|p$/)
        {
                if (a[2] ~ /p$/)
                        a[1] = a[1]+12

                a[2]=substr(a[2],1,2)
        }

        printf "-rw-r--r--   1 %-8d %-8d %8d %s %2d %4d %02d:%02d %s\n", uid, 0, $2, $7, $6, $8, a[1], a[2], $1
}' 2>/dev/null
    exit 0
}

# Command: copyout archivename storedfilename extractto
mc_arc_fs_copyout()
{
   $ARC_GET "$1" "$2" 2> /dev/null
        mv "$2" "$3"
}

# Command: copyin archivename storedfilename sourcefile
mc_arc_fs_copyin()
{
	mv "$3" "$2"
	$ARC_PUT "$1" "$2" 2> /dev/null
}

# Command: rm archivename storedfilename
mc_arc_fs_rm()
{
	$ARC_DEL "$1" "$2" 2> /dev/null
}

# The main routine
umask 077

cmd="$1"
shift

case "$cmd" in
   list)	mc_arc_fs_list 	  "$@" ;;
   copyout) mc_arc_fs_copyout "$@" ;;
   copyin)	mc_arc_fs_copyin  "$@" ;;
   rm)		mc_arc_fs_rm      "$@" ;;
   *)       exit 1 ;;
esac
exit 0