<?php

///////////////////////////////////////////////////////////////////////////
//                                                                       //
// NOTICE OF COPYRIGHT                                                   //
//                                                                       //
// Moodle - Modular Object-Oriented Dynamic Learning Environment         //
//          http://moodle.com                                            //
//                                                                       //
// Copyright (C) 1999 onwards Martin Dougiamas     http://dougiamas.com  //
//           (C) 2001-3001 Eloy Lafuente (stronk7) http://contiento.com  //
//                                                                       //
// This program is free software; you can redistribute it and/or modify  //
// it under the terms of the GNU General Public License as published by  //
// the Free Software Foundation; either version 2 of the License, or     //
// (at your option) any later version.                                   //
//                                                                       //
// This program is distributed in the hope that it will be useful,       //
// but WITHOUT ANY WARRANTY; without even the implied warranty of        //
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         //
// GNU General Public License for more details:                          //
//                                                                       //
//          http://www.gnu.org/copyleft/gpl.html                         //
//                                                                       //
///////////////////////////////////////////////////////////////////////////

/// This class will load every XML file to memory if necessary

class load_xml_files extends XMLDBAction {

    /**
     * Init method, every subclass will have its own
     */
    function init() {
        parent::init();
    /// Set own core attributes
        $this->can_subaction = ACTION_NONE;
        //$this->can_subaction = ACTION_HAVE_SUBACTIONS;

    /// Set own custom attributes

    /// Get needed strings
        $this->loadStrings(array(
        /// 'key' => 'module',
        ));
    }

    /**
     * Invoke method, every class will have its own
     * returns true/false on completion, setting both
     * errormsg and output as necessary
     */
    function invoke() {
        parent::invoke();

        $result = true;

    /// Set own core attributes
        $this->does_generate = ACTION_NONE;
        //$this->does_generate = ACTION_GENERATE_HTML;

    /// These are always here
        global $CFG, $XMLDB;

    /// Do the job, setting $result as needed

    /// Iterate over $XMLDB->dbdirs, loading their XML data to memory
        if ($XMLDB->dbdirs) {
            $dbdirs =& $XMLDB->dbdirs;
            foreach ($dbdirs as $dbdir) {
            /// Set some defaults
                $dbdir->xml_exists = false;
                $dbdir->xml_writeable = false;
                $dbdir->xml_loaded  = false;
            ///Only if the directory exists
                if (!$dbdir->path_exists) {
                    continue;
                }
                $xmldb_file = new xmldb_file($dbdir->path . '/install.xml');
            /// Set dbdir as necessary
                if ($xmldb_file->fileExists()) {
                    $dbdir->xml_exists = true;
                }
                if ($xmldb_file->fileWriteable()) {
                    $dbdir->xml_writeable = true;
                }
            /// Load the XML contents to structure
                $loaded = $xmldb_file->loadXMLStructure();
                if ($loaded && $xmldb_file->isLoaded()) {
                    $dbdir->xml_loaded = true;
                }
                $dbdir->xml_file = $xmldb_file;
            }
        }
        return $result;
    }
}

