task_source

# vim: ft=sh
export logFile=${logFile:-/dev/null}

function waitProgress()
{
    local pid=$!
    local msg=$1
    local delay=0.25
    local str=("/" "-" "\\" "|")
    local str_l=${#str[@]}
    local str_color=(1 2 3 4 5 6 7)
    local str_color_l=${#str_color[@]}
    local index=0
    local index_c=0
    local _FAIL="[$(tput setaf 1)-$(tput sgr0)]"
    local _SUCCESS="[$(tput setaf 2)+$(tput sgr0)]"
    local _NOTE="[*]"
    
    [[ -z $msg ]] && { 
        msg="Waiting..."
    }

    if [[ -t 1 ]]; then
        # produces spinner indicator
        while kill -0 $pid &>/dev/null; do
            echo -ne "\r[$(tput setaf $index_c)${str[$index]}$(tput sgr0)] $msg  "
            sleep $delay
            index=$(( $(( $index + 1 )) % $str_l ))
            index_c=$(( $(( $index_c + 1 )) % $str_color_l ))
        done
    else
        # or a simpler indicator
        echo -en "\r[...] $msg"
    fi

    # block
    if wait $pid ; then
        ret=$?
        echo -en "\r$_SUCCESS $msg    \n"
    else
        ret=$?
        echo -en "\r$_FAIL $msg       \n"
    fi

    return $ret
}