classes/site/VersionCheck.inc.php

<?php

// $Id: VersionCheck.inc.php,v 1.12 2008/07/01 01:16:10 asmecher Exp $


define('VERSION_CHECK_URL', 'http://pkp.sfu.ca/ojs/xml/ojs-version.xml');
define('VERSION_CODE_PATH', 'dbscripts/xml/version.xml');

import('db.XMLDAO');
import('site.Version');

class VersionCheck {

   function &getLatestVersion() {
      $returner = &VersionCheck::parseVersionXML(VERSION_CHECK_URL);
      return $returner;
   }

   function &getCurrentDBVersion() {
      $versionDao = &DAORegistry::getDAO('VersionDAO');
      $dbVersion = &$versionDao->getCurrentVersion();
      return $dbVersion;
   }

   function &getCurrentCodeVersion() {
      $versionInfo = VersionCheck::parseVersionXML(VERSION_CODE_PATH);
      if ($versionInfo) {
         $version = $versionInfo['version'];
      } else {
         $version = false;
      }
      return $version;
   }

   function &parseVersionXML($url) {
      $xmlDao = &new XMLDAO();
      $data = $xmlDao->parseStruct($url, array());
      if (!$data) {
         $result = false;
         return $result;
      }

      // FIXME validate parsed data?
      $versionInfo = array(
         'application' => $data['application'][0]['value'],
         'release' => $data['release'][0]['value'],
         'tag' => $data['tag'][0]['value'],
         'date' => $data['date'][0]['value'],
         'info' => $data['info'][0]['value'],
         'package' => $data['package'][0]['value'],
         'patch' => array(),
         'version' => Version::fromString($data['release'][0]['value'])
      );

      foreach ($data['patch'] as $patch) {
         $versionInfo['patch'][$patch['attributes']['from']] = $patch['value'];
      }

      return $versionInfo;
   }

   function getPatch(&$versionInfo, $codeVersion = null) {
      if (!isset($codeVersion)) {
         $codeVersion = &VersionCheck::getCurrentCodeVersion();
      }
      if (isset($versionInfo['patch'][$codeVersion->getVersionString()])) {
         return $versionInfo['patch'][$codeVersion->getVersionString()];
      }
      return null;
   }

   function getVersionCheckUrl() {
      return VERSION_CHECK_URL;
   }

}

?>

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