#!/bin/sh
#----------------------------------------------------------------------------
# /var/install/include/progress - display progress bar
#
# Creation:     2007-10-09 max
# Last Update:  $Id$
#
# Copyright (c) 2007-2007 the eisfair team, team(at)eisfair(dot)org
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#----------------------------------------------------------------------------

#----------------------------------------------------------------------------
# usage
#----------------------------------------------------------------------------
#
# progress_bar [-tty|-html|-file] current max
#
#     -tty      use console colors
#     -html     use html tags for colors
#     -file     don't use any color tags
#
#----------------------------------------------------------------------------


#============================================================================
# main
#============================================================================

_progress_signstr="=================================================="
_progress_spacestr="                                                  "

progress_bar ()
{
    _progress_mode="$_EISLIB_PRINTMODE"

    while [ 1 ]
    do
        case "$1"
        in
            -tty)   _progress_mode='tty';     shift;;
            -html)  _progress_mode='html';    shift;;
            -file)  _progress_mode='file';    shift;;
            *)      break;;
        esac
    done

    _progress_pos=$1
    _progress_max=$2

    # no progress bar for file or html
    if [ "$_progress_mode" = "tty" ]
    then
        [ $_progress_pos -gt $_progress_max ] && _progress_max=$_progress_pos

        let _progress_percent="100 * $_progress_pos / $_progress_max"
        let _progress_signlen="$_progress_percent / 2"
        let _progress_spacelen="50 - $_progress_signlen"
        let _progress_spacelen2="3 - ${#_progress_percent}"
        let _progress_spacelen3="${#_progress_max} - ${#_progress_pos}"

        echo -ne "\r${_progress_spacestr:0:$_progress_spacelen2}$_progress_percent% [${_progress_signstr:0:$_progress_signlen}>${_progress_spacestr:0:$_progress_spacelen}] ${_progress_spacestr:0:_progress_spacelen3}$_progress_pos / $_progress_max "
    fi
}

#============================================================================
# end
#============================================================================