+ // Do we have another function to run (e.g. translations)
+ if (!empty($extraFunction)) {
+ // Surround the original function call with it
+ $functionName = $extraFunction . '(' . $functionName . ')';
+ } // END - if
+
+ // Now replace the code
+ $code = str_replace($matches[0][$key], "\" . " . $functionName . " . \"", $code);
+ break;
+
+ case 'ext':
+ // Not installed is default
+ $replacer = 'false';
+
+ // Is the extension installed?
+ if (isExtensionInstalled($matches[4][$key])) {
+ // Construct call-back function name
+ $functionName = 'getExtension' . ucfirst(strtolower($callback));
+
+ // Construct call of the function
+ $replacer = "\" . call_user_func_array('" . $functionName . "', array('" . $matches[4][$key] . "', true)) . \"";
+ } // END - if
+
+ // Replace it and insert parameter for GET request
+ $code = str_replace($matches[0][$key], sprintf("&ext=%s&ver=%s&rev=\" . getConfig('CURR_SVN_REVISION') . \"", $matches[4][$key], $replacer), $code);
+ break;
+
+ case 'config': // @TODO FILTER_COMPILE_CONFIG does not handle call-back functions so we handle it here again
+ // Read configuration
+ $configValue = getConfig($matches[4][$key]);
+
+ // Do we have a call-back?
+ if (!empty($callback)) {
+ // Parse it through this function
+ $configValue = call_user_func_array($callback, array($configValue));
+ } // END - if
+
+ // Replace the config entry
+ $code = str_replace($matches[0][$key], $configValue, $code);
+ break;
+
+ case 'filter':
+ // Construct replacement
+ $replacer = "\" . runFilterChain('" . $matches[4][$key] . "') . \"";
+
+ // Run the filter and insert result
+ $code = str_replace($matches[0][$key], $replacer, $code);
+ break;
+
+ default:
+ // Unsupported command detected
+ debug_report_bug('Command=' . $cmd . ', callback=' . $callback . ', extra=' . $extraFunction . ' is unsupported.');
+ break;
+ } // END - switch