do

local function init_disks(conts)
    local dpoint = {};
    local dring = dictionary.dict();

    while conts
    do
        if conts.value == nil then
            break;
        end
        
        if string.sub(conts.value, -1) == ';' then
            conts.value = string.sub(conts.value, 1, #conts.value - 1);
        end
        disks = tool.split(tostring(conts.value) , ';');
        for k,v in ipairs(disks)
        do
            for i = 1, 500
            do
                seed = string.format('%s-%03d', v, i);
                --ngx.say('seed = ' .. seed .. '<br>');
                point = ring.str2point(seed);
                --ngx.say('point = ' .. point .. '<br>');
                dring.set(point, v);
                table.insert(dpoint, point);
            end
        end
        if conts.next.value ~= nil then
            conts = conts.next;
        else
            break;
        end
    end
    table.sort(dpoint);
    return dpoint, dring;
end

local function rfind(str, substr)
    local len = #str;
    local sublen = #substr;
    while len > 0
    do
        istr = string.sub(str, len - 1, len - 2 + sublen);
        if istr == substr then
            return len - 1;
        end
        len = len - 1;
    end
    return nil;
end

dbase = {
    init_disks = init_disks,
    rfind = rfind;
}

end