#!/bin/sh

​

arg0=$(basename "$0" .sh)

blnk=$(echo "$arg0" | sed 's/./ /g')

​

usage_info()

{

    echo "Usage: $arg0 [{-s|--source} source] [{-d|--destination} destination] \\"

    echo "       $blnk [{-c|--credentials} credentials] [{-b|--bandwidth} bandwidth] \\"

    echo "       $blnk [{-t|--timeout} timeout] [{-p|--port} port] \\"

    echo "       $blnk [-h|--help] [{-l|--compression-level} level]"

}

​

usage()

{

    exec 1>2   # Send standard output to standard error

    usage_info

    exit 1

}

​

error()

{

    echo "$arg0: $*" >&2

    exit 1

}

​

help()

{

    usage_info

    echo

    echo "  {-s|--source} source            -- Set source directory (default: .)"

    echo "  {-d|--destination} destination  -- Set destination"

    echo "  {-c|--credentials} credentials  -- Set credentials"

    echo "  {-b|--bandwidth} bandwidth      -- Set maximum bandwidth"

    echo "  {-t|--timeout} timeout          -- Set timeout (default: 60s)"

    echo "  {-p|--port} port                -- Set port number (default: 1234)"

    echo "  {-l|--compression-level} level  -- Set compression level (default: 1)"

    echo "  {-h|--help}                     -- Print this help message and exit"

#   echo "  {-V|--version}                  -- Print version information and exit"

    exit 0

}

​

flags()

{

    while test $# -gt 0

    do

        case "$1" in

        (-s|--source)

            shift

            [ $# = 0 ] && error "No source directory specified"

            export SOURCE="$1"

            shift;;

        (-d|--destination)

            shift

            [ $# = 0 ] && error "No destination specified"

            export DESTINATION="$1"

            shift;;

        (-c|--credentials)

            shift

            [ $# = 0 ] && error "No credentials specified"

            export CREDENTIALS="$1"

            shift;;

        (-b|--bandwidth)

            shift

            [ $# = 0 ] && error "No bandwidth specified"

            export BANDWIDTH="$1"

            shift;;

        (-t|--timeout)

            shift

            [ $# = 0 ] && error "No timeout specified"

            export TIMEOUT="$1"

            shift;;

        (-p|--port)

            shift

            [ $# = 0 ] && error "No port specified"

            export PORT="$1"

            shift;;

        (-l|--compression-level)

            shift

            [ $# = 0 ] && error "No compression level specified"

            export COMPRESS_LEVEL="$1"

            shift;;

        (-h|--help)

            help;;

#       (-V|--version)

#           version_info;;

        (*) usage;;

        esac

    done

}

​

flags "$@"

​

echo "source is $SOURCE"

echo "destination is $DESTINATION"

echo "credentials are $CREDENTIALS"

echo "bandwidth is $BANDWIDTH"

echo "timeout is $TIMEOUT"

echo "port is $PORT"