Currency update for RUR

[Spirit-RC]

I wrote this patch as I found that neither OANDA, nor XE work for me. They both know nothing of Russian rouble (RUR or RUB). Here in Russia we usually use RosBusinessConsulting agency for currency exchange rate information, thus I decided to patch osCommerce to use that too.

 

First of all, we add the following code to catalog/admin/includes/functions/localization.php:

 // A function to update exchange rates via RosBusinessConsulting Agency (www.rbc.ru)
// using quotes from Centrobank of Russian Federation
function quote_rbc_cb_currency($to, $from = DEFAULT_CURRENCY) {

  // RBC's Centrobank quotes don't understand RUR currency code and use BASE instead
  // the RUB code is mentioned here to add some robustness :)
  if ( $from == 'RUR' || $from == 'RUB' ) { $from='BASE'; }
  if ( $to == 'RUR' || $to == 'RUB' ) { $to='BASE'; }

  $page = file('http://conv.rbc.ru/convert.shtml?mode=calc&source=cb.0&tid_from='.$from.'&commission=1&tid_to='.$to.'&summa=1');
  $match = array();

  preg_match('/<TD height=32>.+:<\/TD>\s*<TD\><B>(\d+\.?\d*)<\/B>/', implode('',$page), $match);

  if (sizeof($match) > 0) {
    return $match[1];
  } else {
    return false;
  }
}

 

Then we change catalog/admin/includes/application_top.php and replace

define('CURRENCY_SERVER_PRIMARY', 'oanda');

with

define('CURRENCY_SERVER_PRIMARY', 'rbc_cb');

 

That's it!

 

The patch queries RBC for Centrobank quotes, but it can easily be updated to query for FOREX or MICEX (MMVB) data.