/** * 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 /// Get the dir containing the file $dirpath = required_param('dir', PARAM_PATH); $dirpath = $CFG->dirroot . $dirpath; /// Get the correct dir if (!empty($XMLDB->dbdirs)) { $dbdir =& $XMLDB->dbdirs[$dirpath]; if ($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) { return false; } $xmldb_file = new xmldb_file($dbdir->path . '/install.xml'); ///Set the XML DTD and schema $xmldb_file->setDTD($CFG->dirroot . '/lib/xmldb/xmldb.dtd'); $xmldb_file->setSchema($CFG->dirroot . '/lib/xmldb/xmldb.xsd'); /// 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; $dbdir->filemtime = filemtime($dbdir->path . '/install.xml'); } $dbdir->xml_file = $xmldb_file; } else { $this->errormsg = 'Wrong directory (' . $dirpath . ')'; $result = false; } } else { $this->errormsg = 'XMLDB structure not found'; $result = false; } /// Launch postaction if exists if ($this->getPostAction() && $result) { return $this->launch($this->getPostAction()); } return $result; }