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<?php
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// This file is part of Moodle - http://moodle.org/
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//
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// Moodle is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// Moodle is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with Moodle. If not, see <http://www.gnu.org/licenses/>.
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/**
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* Defines the base class for question import and export formats.
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*
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* @package moodlecore
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* @subpackage questionbank
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* @copyright 1999 onwards Martin Dougiamas {@link http://moodle.com}
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* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
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*/
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defined('MOODLE_INTERNAL') || die();
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/**
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* Base class for question import and export formats.
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*
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* @copyright 1999 onwards Martin Dougiamas {@link http://moodle.com}
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* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
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*/
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class qformat_default {
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public $displayerrors = true;
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public $category = null;
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public $questions = array();
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public $course = null;
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public $filename = '';
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public $realfilename = '';
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public $matchgrades = 'error';
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public $catfromfile = 0;
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public $contextfromfile = 0;
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public $cattofile = 0;
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public $contexttofile = 0;
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public $questionids = array();
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public $importerrors = 0;
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public $stoponerror = true;
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public $translator = null;
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public $canaccessbackupdata = true;
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protected $importcontext = null;
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/** @var bool $displayprogress Whether to display progress. */
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public $displayprogress = true;
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/** @var context[] */
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public $contexts;
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// functions to indicate import/export functionality
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// override to return true if implemented
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/** @return bool whether this plugin provides import functionality. */
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public function provide_import() {
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return false;
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}
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/** @return bool whether this plugin provides export functionality. */
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public function provide_export() {
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return false;
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}
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/** The string mime-type of the files that this plugin reads or writes. */
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public function mime_type() {
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return mimeinfo('type', $this->export_file_extension());
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}
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/**
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* @return string the file extension (including .) that is normally used for
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* files handled by this plugin.
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*/
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public function export_file_extension() {
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return '.txt';
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}
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/**
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* Check if the given file is capable of being imported by this plugin.
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*
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* Note that expensive or detailed integrity checks on the file should
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* not be performed by this method. Simple file type or magic-number tests
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* would be suitable.
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*
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* @param stored_file $file the file to check
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* @return bool whether this plugin can import the file
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*/
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public function can_import_file($file) {
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return ($file->get_mimetype() == $this->mime_type());
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}
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/**
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* Validate the given file.
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*
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* For more expensive or detailed integrity checks.
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*
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* @param stored_file $file the file to check
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* @return string the error message that occurred while validating the given file
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*/
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public function validate_file(stored_file $file): string {
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return '';
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}
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/**
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* Check if the given file has the required utf8 encoding.
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*
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* @param stored_file $file the file to check
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* @return string the error message if the file encoding is not UTF-8
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*/
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protected function validate_is_utf8_file(stored_file $file): string {
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if (!mb_check_encoding($file->get_content(), "UTF-8")) {
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return get_string('importwrongfileencoding', 'question', $this->get_name());
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}
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return '';
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}
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/**
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* Return the localized pluginname string for the question format.
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*
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* @return string the pluginname string for the question format
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*/
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protected function get_name(): string {
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return get_string('pluginname', get_class($this));
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}
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// Accessor methods
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/**
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* set the category
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* @param object category the category object
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*/
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public function setCategory($category) {
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if (count($this->questions)) {
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debugging('You shouldn\'t call setCategory after setQuestions');
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}
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$context = context::instance_by_id($category->contextid);
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if ($context->contextlevel !== CONTEXT_MODULE) {
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throw new \core\exception\moodle_exception('Invalid contextlevel for target category, must be CONTEXT_MODULE');
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}
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$this->category = $category;
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$this->importcontext = $context;
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}
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/**
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* Set the specific questions to export. Should not include questions with
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* parents (sub questions of cloze question type).
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* Only used for question export.
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* @param array of question objects
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*/
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public function setQuestions($questions) {
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if ($this->category !== null) {
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debugging('You shouldn\'t call setQuestions after setCategory');
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}
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$this->questions = $questions;
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}
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/**
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* set the course class variable
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* @param course object Moodle course variable
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*/
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public function setCourse($course) {
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$this->course = $course;
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}
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/**
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* set an array of contexts.
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* @param context[] $contexts
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*/
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public function setContexts($contexts) {
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$this->contexts = $contexts;
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$this->translator = new core_question\local\bank\context_to_string_translator($this->contexts);
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}
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/**
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* set the filename
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* @param string filename name of file to import/export
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*/
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public function setFilename($filename) {
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$this->filename = $filename;
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}
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/**
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* set the "real" filename
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* (this is what the user typed, regardless of wha happened next)
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* @param string realfilename name of file as typed by user
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*/
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public function setRealfilename($realfilename) {
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$this->realfilename = $realfilename;
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}
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/**
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* set matchgrades
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* @param string matchgrades error or nearest for grades
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*/
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public function setMatchgrades($matchgrades) {
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$this->matchgrades = $matchgrades;
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}
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/**
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* set catfromfile
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* @param bool catfromfile allow categories embedded in import file
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*/
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public function setCatfromfile($catfromfile) {
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$this->catfromfile = $catfromfile;
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}
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/**
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* set contextfromfile
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* @param bool $contextfromfile allow contexts embedded in import file
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*/
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public function setContextfromfile($contextfromfile) {
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$this->contextfromfile = $contextfromfile;
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}
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/**
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* set cattofile
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* @param bool cattofile exports categories within export file
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*/
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public function setCattofile($cattofile) {
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$this->cattofile = $cattofile;
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}
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/**
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* set contexttofile
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* @param bool cattofile exports categories within export file
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*/
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public function setContexttofile($contexttofile) {
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$this->contexttofile = $contexttofile;
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}
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/**
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* set stoponerror
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* @param bool stoponerror stops database write if any errors reported
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*/
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public function setStoponerror($stoponerror) {
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$this->stoponerror = $stoponerror;
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}
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/**
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* @param bool $canaccess Whether the current use can access the backup data folder. Determines
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* where export files are saved.
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*/
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public function set_can_access_backupdata($canaccess) {
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$this->canaccessbackupdata = $canaccess;
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}
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/**
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* Change whether to display progress messages.
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* There is normally no need to use this function as the
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* default for $displayprogress is true.
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* Set to false for unit tests.
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* @param bool $displayprogress
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*/
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public function set_display_progress($displayprogress) {
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$this->displayprogress = $displayprogress;
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}
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/***********************
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* IMPORTING FUNCTIONS
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***********************/
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/**
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* Handle parsing error
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*/
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protected function error($message, $text='', $questionname='') {
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$importerrorquestion = get_string('importerrorquestion', 'question');
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echo "<div class=\"importerror\">\n";
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echo "<strong>{$importerrorquestion} {$questionname}</strong>";
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if (!empty($text)) {
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$text = s($text);
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echo "<blockquote>{$text}</blockquote>\n";
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}
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echo "<strong>{$message}</strong>\n";
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echo "</div>";
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$this->importerrors++;
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}
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/**
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* Import for questiontype plugins
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* Do not override.
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* @param data mixed The segment of data containing the question
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* @param question object processed (so far) by standard import code if appropriate
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* @param extra mixed any additional format specific data that may be passed by the format
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* @param qtypehint hint about a question type from format
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* @return object question object suitable for save_options() or false if cannot handle
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*/
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public function try_importing_using_qtypes($data, $question = null, $extra = null,
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$qtypehint = '') {
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// work out what format we are using
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$formatname = substr(get_class($this), strlen('qformat_'));
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$methodname = "import_from_{$formatname}";
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//first try importing using a hint from format
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if (!empty($qtypehint)) {
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$qtype = question_bank::get_qtype($qtypehint, false);
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if (is_object($qtype) && method_exists($qtype, $methodname)) {
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$question = $qtype->$methodname($data, $question, $this, $extra);
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if ($question) {
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return $question;
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}
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}
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}
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// loop through installed questiontypes checking for
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// function to handle this question
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foreach (question_bank::get_all_qtypes() as $qtype) {
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if (method_exists($qtype, $methodname)) {
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if ($importedquestion = $qtype->$methodname($data, $question, $this, $extra)) {
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return $importedquestion;
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}
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}
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}
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return false;
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}
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/**
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* Perform any required pre-processing
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* @return bool success
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*/
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public function importpreprocess() {
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return true;
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}
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/**
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* Process the file
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* This method should not normally be overidden
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* @return bool success
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*/
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public function importprocess() {
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global $USER, $DB, $OUTPUT;
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// Raise time and memory, as importing can be quite intensive.
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core_php_time_limit::raise();
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raise_memory_limit(MEMORY_EXTRA);
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// STAGE 1: Parse the file
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if ($this->displayprogress) {
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echo $OUTPUT->notification(get_string('parsingquestions', 'question'), 'notifysuccess');
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}
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if (! $lines = $this->readdata($this->filename)) {
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echo $OUTPUT->notification(get_string('cannotread', 'question'));
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return false;
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}
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if (!$questions = $this->readquestions($lines)) { // Extract all the questions
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echo $OUTPUT->notification(get_string('noquestionsinfile', 'question'));
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return false;
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}
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// STAGE 2: Write data to database
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if ($this->displayprogress) {
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echo $OUTPUT->notification(get_string('importingquestions', 'question',
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$this->count_questions($questions)), 'notifysuccess');
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}
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// check for errors before we continue
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if ($this->stoponerror and ($this->importerrors>0)) {
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echo $OUTPUT->notification(get_string('importparseerror', 'question'));
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return false;
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}
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// get list of valid answer grades
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$gradeoptionsfull = question_bank::fraction_options_full();
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// check answer grades are valid
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// (now need to do this here because of 'stop on error': MDL-10689)
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$gradeerrors = 0;
|
|
|
380 |
$goodquestions = array();
|
|
|
381 |
foreach ($questions as $question) {
|
|
|
382 |
if (!empty($question->fraction) and (is_array($question->fraction))) {
|
|
|
383 |
$fractions = $question->fraction;
|
|
|
384 |
$invalidfractions = array();
|
|
|
385 |
foreach ($fractions as $key => $fraction) {
|
|
|
386 |
$newfraction = match_grade_options($gradeoptionsfull, $fraction,
|
|
|
387 |
$this->matchgrades);
|
|
|
388 |
if ($newfraction === false) {
|
|
|
389 |
$invalidfractions[] = $fraction;
|
|
|
390 |
} else {
|
|
|
391 |
$fractions[$key] = $newfraction;
|
|
|
392 |
}
|
|
|
393 |
}
|
|
|
394 |
if ($invalidfractions) {
|
|
|
395 |
$a = ['grades' => implode(', ', $invalidfractions), 'question' => $question->name];
|
|
|
396 |
echo $OUTPUT->notification(get_string('invalidgradequestion', 'question', $a));
|
|
|
397 |
++$gradeerrors;
|
|
|
398 |
continue;
|
|
|
399 |
} else {
|
|
|
400 |
$question->fraction = $fractions;
|
|
|
401 |
}
|
|
|
402 |
}
|
|
|
403 |
$goodquestions[] = $question;
|
|
|
404 |
}
|
|
|
405 |
$questions = $goodquestions;
|
|
|
406 |
|
|
|
407 |
// check for errors before we continue
|
|
|
408 |
if ($this->stoponerror && $gradeerrors > 0) {
|
|
|
409 |
echo $OUTPUT->notification(get_string('importparseerror', 'question'));
|
|
|
410 |
return false;
|
|
|
411 |
}
|
|
|
412 |
|
|
|
413 |
// count number of questions processed
|
|
|
414 |
$count = 0;
|
|
|
415 |
|
|
|
416 |
foreach ($questions as $question) { // Process and store each question
|
|
|
417 |
$transaction = $DB->start_delegated_transaction();
|
|
|
418 |
|
|
|
419 |
// reset the php timeout
|
|
|
420 |
core_php_time_limit::raise();
|
|
|
421 |
|
|
|
422 |
// check for category modifiers
|
|
|
423 |
if ($question->qtype == 'category') {
|
|
|
424 |
if ($this->catfromfile) {
|
|
|
425 |
// find/create category object
|
|
|
426 |
$catpath = $question->category;
|
|
|
427 |
$newcategory = $this->create_category_path($catpath, $question);
|
|
|
428 |
if (!empty($newcategory)) {
|
|
|
429 |
$this->category = $newcategory;
|
|
|
430 |
}
|
|
|
431 |
}
|
|
|
432 |
$transaction->allow_commit();
|
|
|
433 |
continue;
|
|
|
434 |
}
|
|
|
435 |
$question->context = $this->importcontext;
|
|
|
436 |
|
|
|
437 |
$count++;
|
|
|
438 |
|
|
|
439 |
if ($this->displayprogress) {
|
|
|
440 |
echo "<hr /><p><b>{$count}</b>. " . $this->format_question_text($question) . "</p>";
|
|
|
441 |
}
|
|
|
442 |
|
|
|
443 |
$question->category = $this->category->id;
|
|
|
444 |
$question->stamp = make_unique_id_code(); // Set the unique code (not to be changed)
|
|
|
445 |
|
|
|
446 |
$question->createdby = $USER->id;
|
|
|
447 |
$question->timecreated = time();
|
|
|
448 |
$question->modifiedby = $USER->id;
|
|
|
449 |
$question->timemodified = time();
|
|
|
450 |
if (isset($question->idnumber)) {
|
|
|
451 |
if ((string) $question->idnumber === '') {
|
|
|
452 |
// Id number not really set. Get rid of it.
|
|
|
453 |
unset($question->idnumber);
|
|
|
454 |
} else {
|
|
|
455 |
if ($DB->record_exists('question_bank_entries',
|
|
|
456 |
['idnumber' => $question->idnumber, 'questioncategoryid' => $question->category])) {
|
|
|
457 |
// We cannot have duplicate idnumbers in a category. Just remove it.
|
|
|
458 |
unset($question->idnumber);
|
|
|
459 |
}
|
|
|
460 |
}
|
|
|
461 |
}
|
|
|
462 |
|
|
|
463 |
$fileoptions = array(
|
|
|
464 |
'subdirs' => true,
|
|
|
465 |
'maxfiles' => -1,
|
|
|
466 |
'maxbytes' => 0,
|
|
|
467 |
);
|
|
|
468 |
|
|
|
469 |
$question->id = $DB->insert_record('question', $question);
|
|
|
470 |
// Create a bank entry for each question imported.
|
|
|
471 |
$questionbankentry = new \stdClass();
|
|
|
472 |
$questionbankentry->questioncategoryid = $question->category;
|
|
|
473 |
$questionbankentry->idnumber = $question->idnumber ?? null;
|
|
|
474 |
$questionbankentry->ownerid = $question->createdby;
|
|
|
475 |
$questionbankentry->id = $DB->insert_record('question_bank_entries', $questionbankentry);
|
|
|
476 |
// Create a version for each question imported.
|
|
|
477 |
$questionversion = new \stdClass();
|
|
|
478 |
$questionversion->questionbankentryid = $questionbankentry->id;
|
|
|
479 |
$questionversion->questionid = $question->id;
|
|
|
480 |
$questionversion->version = 1;
|
|
|
481 |
$questionversion->status = \core_question\local\bank\question_version_status::QUESTION_STATUS_READY;
|
|
|
482 |
$questionversion->id = $DB->insert_record('question_versions', $questionversion);
|
|
|
483 |
|
|
|
484 |
if (isset($question->questiontextitemid)) {
|
|
|
485 |
$question->questiontext = file_save_draft_area_files($question->questiontextitemid,
|
|
|
486 |
$this->importcontext->id, 'question', 'questiontext', $question->id,
|
|
|
487 |
$fileoptions, $question->questiontext);
|
| 1441 |
ariadna |
488 |
file_clear_draft_area($question->questiontextitemid);
|
| 1 |
efrain |
489 |
} else if (isset($question->questiontextfiles)) {
|
|
|
490 |
foreach ($question->questiontextfiles as $file) {
|
|
|
491 |
question_bank::get_qtype($question->qtype)->import_file(
|
|
|
492 |
$this->importcontext, 'question', 'questiontext', $question->id, $file);
|
|
|
493 |
}
|
|
|
494 |
}
|
|
|
495 |
if (isset($question->generalfeedbackitemid)) {
|
|
|
496 |
$question->generalfeedback = file_save_draft_area_files($question->generalfeedbackitemid,
|
|
|
497 |
$this->importcontext->id, 'question', 'generalfeedback', $question->id,
|
|
|
498 |
$fileoptions, $question->generalfeedback);
|
| 1441 |
ariadna |
499 |
file_clear_draft_area($question->generalfeedbackitemid);
|
| 1 |
efrain |
500 |
} else if (isset($question->generalfeedbackfiles)) {
|
|
|
501 |
foreach ($question->generalfeedbackfiles as $file) {
|
|
|
502 |
question_bank::get_qtype($question->qtype)->import_file(
|
|
|
503 |
$this->importcontext, 'question', 'generalfeedback', $question->id, $file);
|
|
|
504 |
}
|
|
|
505 |
}
|
|
|
506 |
$DB->update_record('question', $question);
|
|
|
507 |
|
|
|
508 |
$this->questionids[] = $question->id;
|
|
|
509 |
|
|
|
510 |
// Now to save all the answers and type-specific options
|
|
|
511 |
|
|
|
512 |
$result = question_bank::get_qtype($question->qtype)->save_question_options($question);
|
|
|
513 |
$event = \core\event\question_created::create_from_question_instance($question, $this->importcontext);
|
|
|
514 |
$event->trigger();
|
|
|
515 |
|
|
|
516 |
if (core_tag_tag::is_enabled('core_question', 'question')) {
|
| 1441 |
ariadna |
517 |
// Course tags on question now deprecated so merge them into the question tags.
|
|
|
518 |
$mergedtags = array_merge($question->coursetags ?? [], $question->tags ?? []);
|
|
|
519 |
core_tag_tag::set_item_tags('core_question',
|
|
|
520 |
'question',
|
|
|
521 |
$question->id,
|
|
|
522 |
$question->context,
|
|
|
523 |
$mergedtags
|
|
|
524 |
);
|
| 1 |
efrain |
525 |
}
|
|
|
526 |
|
|
|
527 |
if (!empty($result->error)) {
|
|
|
528 |
echo $OUTPUT->notification($result->error);
|
|
|
529 |
// Can't use $transaction->rollback(); since it requires an exception,
|
|
|
530 |
// and I don't want to rewrite this code to change the error handling now.
|
|
|
531 |
$DB->force_transaction_rollback();
|
|
|
532 |
return false;
|
|
|
533 |
}
|
|
|
534 |
|
|
|
535 |
$transaction->allow_commit();
|
|
|
536 |
|
|
|
537 |
if (!empty($result->notice)) {
|
|
|
538 |
echo $OUTPUT->notification($result->notice);
|
|
|
539 |
return true;
|
|
|
540 |
}
|
|
|
541 |
|
|
|
542 |
}
|
|
|
543 |
return true;
|
|
|
544 |
}
|
|
|
545 |
|
|
|
546 |
/**
|
|
|
547 |
* Count all non-category questions in the questions array.
|
|
|
548 |
*
|
|
|
549 |
* @param array questions An array of question objects.
|
|
|
550 |
* @return int The count.
|
|
|
551 |
*
|
|
|
552 |
*/
|
|
|
553 |
protected function count_questions($questions) {
|
|
|
554 |
$count = 0;
|
|
|
555 |
if (!is_array($questions)) {
|
|
|
556 |
return $count;
|
|
|
557 |
}
|
|
|
558 |
foreach ($questions as $question) {
|
|
|
559 |
if (!is_object($question) || !isset($question->qtype) ||
|
|
|
560 |
($question->qtype == 'category')) {
|
|
|
561 |
continue;
|
|
|
562 |
}
|
|
|
563 |
$count++;
|
|
|
564 |
}
|
|
|
565 |
return $count;
|
|
|
566 |
}
|
|
|
567 |
|
|
|
568 |
/**
|
|
|
569 |
* find and/or create the category described by a delimited list
|
|
|
570 |
* e.g. $course$/tom/dick/harry or tom/dick/harry
|
|
|
571 |
*
|
|
|
572 |
* removes any context string no matter whether $getcontext is set
|
|
|
573 |
* but if $getcontext is set then ignore the context and use selected category context.
|
|
|
574 |
*
|
|
|
575 |
* @param string catpath delimited category path
|
|
|
576 |
* @param object $lastcategoryinfo Contains category information
|
|
|
577 |
* @return mixed category object or null if fails
|
|
|
578 |
*/
|
|
|
579 |
protected function create_category_path($catpath, $lastcategoryinfo = null) {
|
|
|
580 |
global $DB;
|
|
|
581 |
$catnames = $this->split_category_path($catpath);
|
|
|
582 |
$parent = 0;
|
|
|
583 |
$category = null;
|
|
|
584 |
|
|
|
585 |
// check for context id in path, it might not be there in pre 1.9 exports
|
|
|
586 |
$matchcount = preg_match('/^\$([a-z]+)\$$/', $catnames[0], $matches);
|
|
|
587 |
if ($matchcount == 1) {
|
|
|
588 |
$contextid = $this->translator->string_to_context($matches[1]);
|
|
|
589 |
array_shift($catnames);
|
|
|
590 |
} else {
|
|
|
591 |
$contextid = false;
|
|
|
592 |
}
|
|
|
593 |
|
|
|
594 |
// Before 3.5, question categories could be created at top level.
|
|
|
595 |
// From 3.5 onwards, all question categories should be a child of a special category called the "top" category.
|
|
|
596 |
if (isset($catnames[0]) && (($catnames[0] != 'top') || (count($catnames) < 3))) {
|
|
|
597 |
array_unshift($catnames, 'top');
|
|
|
598 |
}
|
|
|
599 |
|
|
|
600 |
if ($this->contextfromfile && $contextid !== false) {
|
|
|
601 |
$context = context::instance_by_id($contextid);
|
|
|
602 |
require_capability('moodle/question:add', $context);
|
|
|
603 |
} else {
|
|
|
604 |
$context = context::instance_by_id($this->category->contextid);
|
|
|
605 |
}
|
| 1441 |
ariadna |
606 |
|
|
|
607 |
// If the file had categories in a deprecated context then the categories need to be applied to a default system type
|
|
|
608 |
// mod_qbank instance on the course instead.
|
|
|
609 |
if ($context->contextlevel !== CONTEXT_MODULE) {
|
|
|
610 |
$qbank = \core_question\local\bank\question_bank_helper::get_default_open_instance_system_type($this->course, true);
|
|
|
611 |
$context = context_module::instance($qbank->id);
|
|
|
612 |
}
|
|
|
613 |
|
| 1 |
efrain |
614 |
$this->importcontext = $context;
|
|
|
615 |
|
|
|
616 |
// Now create any categories that need to be created.
|
|
|
617 |
foreach ($catnames as $key => $catname) {
|
|
|
618 |
if ($parent == 0) {
|
|
|
619 |
$category = question_get_top_category($context->id, true);
|
|
|
620 |
$parent = $category->id;
|
|
|
621 |
} else if ($category = $DB->get_record('question_categories',
|
|
|
622 |
array('name' => $catname, 'contextid' => $context->id, 'parent' => $parent))) {
|
|
|
623 |
// If this category is now the last one in the path we are processing ...
|
|
|
624 |
if ($key == (count($catnames) - 1) && $lastcategoryinfo) {
|
|
|
625 |
// Do nothing unless the child category appears before the parent category
|
|
|
626 |
// in the imported xml file. Because the parent was created without info being available
|
|
|
627 |
// at that time, this allows the info to be added from the xml data.
|
|
|
628 |
if (isset($lastcategoryinfo->info) && $lastcategoryinfo->info !== ''
|
|
|
629 |
&& $category->info === '') {
|
|
|
630 |
$category->info = $lastcategoryinfo->info;
|
|
|
631 |
if (isset($lastcategoryinfo->infoformat) && $lastcategoryinfo->infoformat !== '') {
|
|
|
632 |
$category->infoformat = $lastcategoryinfo->infoformat;
|
|
|
633 |
}
|
|
|
634 |
}
|
|
|
635 |
// Same for idnumber.
|
|
|
636 |
if (isset($lastcategoryinfo->idnumber) && $lastcategoryinfo->idnumber !== ''
|
|
|
637 |
&& $category->idnumber === '') {
|
|
|
638 |
$category->idnumber = $lastcategoryinfo->idnumber;
|
|
|
639 |
}
|
|
|
640 |
$DB->update_record('question_categories', $category);
|
|
|
641 |
}
|
|
|
642 |
$parent = $category->id;
|
|
|
643 |
} else {
|
|
|
644 |
if ($catname == 'top') {
|
|
|
645 |
// Should not happen, but if it does just move on.
|
|
|
646 |
// Occurs when there has been some import/export that has created
|
|
|
647 |
// multiple nested 'top' categories (due to old bug solved by MDL-63165).
|
|
|
648 |
// This basically silently cleans up old errors. Not throwing an exception here.
|
|
|
649 |
continue;
|
|
|
650 |
}
|
|
|
651 |
require_capability('moodle/question:managecategory', $context);
|
|
|
652 |
// Create the new category. This will create all the categories in the catpath,
|
|
|
653 |
// though only the final category will have any info added if available.
|
|
|
654 |
$category = new stdClass();
|
|
|
655 |
$category->contextid = $context->id;
|
|
|
656 |
$category->name = $catname;
|
|
|
657 |
$category->info = '';
|
|
|
658 |
// Only add info (category description) for the final category in the catpath.
|
|
|
659 |
if ($key == (count($catnames) - 1) && $lastcategoryinfo) {
|
|
|
660 |
if (isset($lastcategoryinfo->info) && $lastcategoryinfo->info !== '') {
|
|
|
661 |
$category->info = $lastcategoryinfo->info;
|
|
|
662 |
if (isset($lastcategoryinfo->infoformat) && $lastcategoryinfo->infoformat !== '') {
|
|
|
663 |
$category->infoformat = $lastcategoryinfo->infoformat;
|
|
|
664 |
}
|
|
|
665 |
}
|
|
|
666 |
// Same for idnumber.
|
|
|
667 |
if (isset($lastcategoryinfo->idnumber) && $lastcategoryinfo->idnumber !== '') {
|
|
|
668 |
$category->idnumber = $lastcategoryinfo->idnumber;
|
|
|
669 |
}
|
|
|
670 |
}
|
|
|
671 |
$category->parent = $parent;
|
|
|
672 |
$category->sortorder = 999;
|
|
|
673 |
$category->stamp = make_unique_id_code();
|
|
|
674 |
$category->id = $DB->insert_record('question_categories', $category);
|
|
|
675 |
$parent = $category->id;
|
|
|
676 |
$event = \core\event\question_category_created::create_from_question_category_instance($category, $context);
|
|
|
677 |
$event->trigger();
|
|
|
678 |
}
|
|
|
679 |
}
|
|
|
680 |
return $category;
|
|
|
681 |
}
|
|
|
682 |
|
|
|
683 |
/**
|
|
|
684 |
* Return complete file within an array, one item per line
|
|
|
685 |
* @param string filename name of file
|
|
|
686 |
* @return mixed contents array or false on failure
|
|
|
687 |
*/
|
|
|
688 |
protected function readdata($filename) {
|
|
|
689 |
if (is_readable($filename)) {
|
|
|
690 |
$filearray = file($filename);
|
|
|
691 |
|
|
|
692 |
// If the first line of the file starts with a UTF-8 BOM, remove it.
|
|
|
693 |
$filearray[0] = core_text::trim_utf8_bom($filearray[0]);
|
|
|
694 |
|
|
|
695 |
// Check for Macintosh OS line returns (ie file on one line), and fix.
|
|
|
696 |
if (preg_match("~\r~", $filearray[0]) AND !preg_match("~\n~", $filearray[0])) {
|
|
|
697 |
return explode("\r", $filearray[0]);
|
|
|
698 |
} else {
|
|
|
699 |
return $filearray;
|
|
|
700 |
}
|
|
|
701 |
}
|
|
|
702 |
return false;
|
|
|
703 |
}
|
|
|
704 |
|
|
|
705 |
/**
|
|
|
706 |
* Parses an array of lines into an array of questions,
|
|
|
707 |
* where each item is a question object as defined by
|
|
|
708 |
* readquestion(). Questions are defined as anything
|
|
|
709 |
* between blank lines.
|
|
|
710 |
*
|
|
|
711 |
* NOTE this method used to take $context as a second argument. However, at
|
|
|
712 |
* the point where this method was called, it was impossible to know what
|
|
|
713 |
* context the quetsions were going to be saved into, so the value could be
|
|
|
714 |
* wrong. Also, none of the standard question formats were using this argument,
|
|
|
715 |
* so it was removed. See MDL-32220.
|
|
|
716 |
*
|
|
|
717 |
* If your format does not use blank lines as a delimiter
|
|
|
718 |
* then you will need to override this method. Even then
|
|
|
719 |
* try to use readquestion for each question
|
|
|
720 |
* @param array lines array of lines from readdata
|
|
|
721 |
* @return array array of question objects
|
|
|
722 |
*/
|
|
|
723 |
protected function readquestions($lines) {
|
|
|
724 |
|
|
|
725 |
$questions = array();
|
|
|
726 |
$currentquestion = array();
|
|
|
727 |
|
|
|
728 |
foreach ($lines as $line) {
|
|
|
729 |
$line = trim($line);
|
|
|
730 |
if (empty($line)) {
|
|
|
731 |
if (!empty($currentquestion)) {
|
|
|
732 |
if ($question = $this->readquestion($currentquestion)) {
|
|
|
733 |
$questions[] = $question;
|
|
|
734 |
}
|
|
|
735 |
$currentquestion = array();
|
|
|
736 |
}
|
|
|
737 |
} else {
|
|
|
738 |
$currentquestion[] = $line;
|
|
|
739 |
}
|
|
|
740 |
}
|
|
|
741 |
|
|
|
742 |
if (!empty($currentquestion)) { // There may be a final question
|
|
|
743 |
if ($question = $this->readquestion($currentquestion)) {
|
|
|
744 |
$questions[] = $question;
|
|
|
745 |
}
|
|
|
746 |
}
|
|
|
747 |
|
|
|
748 |
return $questions;
|
|
|
749 |
}
|
|
|
750 |
|
|
|
751 |
/**
|
|
|
752 |
* return an "empty" question
|
|
|
753 |
* Somewhere to specify question parameters that are not handled
|
|
|
754 |
* by import but are required db fields.
|
|
|
755 |
* This should not be overridden.
|
|
|
756 |
* @return object default question
|
|
|
757 |
*/
|
|
|
758 |
protected function defaultquestion() {
|
|
|
759 |
global $CFG;
|
|
|
760 |
static $defaultshuffleanswers = null;
|
|
|
761 |
if (is_null($defaultshuffleanswers)) {
|
|
|
762 |
$defaultshuffleanswers = get_config('quiz', 'shuffleanswers');
|
|
|
763 |
}
|
|
|
764 |
|
|
|
765 |
$question = new stdClass();
|
|
|
766 |
$question->shuffleanswers = $defaultshuffleanswers;
|
|
|
767 |
$question->defaultmark = 1;
|
|
|
768 |
$question->image = '';
|
|
|
769 |
$question->usecase = 0;
|
|
|
770 |
$question->multiplier = array();
|
|
|
771 |
$question->questiontextformat = FORMAT_MOODLE;
|
|
|
772 |
$question->generalfeedback = '';
|
|
|
773 |
$question->generalfeedbackformat = FORMAT_MOODLE;
|
|
|
774 |
$question->answernumbering = 'abc';
|
|
|
775 |
$question->penalty = 0.3333333;
|
|
|
776 |
$question->length = 1;
|
|
|
777 |
|
|
|
778 |
// this option in case the questiontypes class wants
|
|
|
779 |
// to know where the data came from
|
|
|
780 |
$question->export_process = true;
|
|
|
781 |
$question->import_process = true;
|
|
|
782 |
|
|
|
783 |
$this->add_blank_combined_feedback($question);
|
|
|
784 |
|
|
|
785 |
return $question;
|
|
|
786 |
}
|
|
|
787 |
|
|
|
788 |
/**
|
|
|
789 |
* Construct a reasonable default question name, based on the start of the question text.
|
|
|
790 |
* @param string $questiontext the question text.
|
|
|
791 |
* @param string $default default question name to use if the constructed one comes out blank.
|
|
|
792 |
* @return string a reasonable question name.
|
|
|
793 |
*/
|
|
|
794 |
public function create_default_question_name($questiontext, $default) {
|
|
|
795 |
$name = $this->clean_question_name(shorten_text($questiontext, 80));
|
|
|
796 |
if ($name) {
|
|
|
797 |
return $name;
|
|
|
798 |
} else {
|
|
|
799 |
return $default;
|
|
|
800 |
}
|
|
|
801 |
}
|
|
|
802 |
|
|
|
803 |
/**
|
|
|
804 |
* Ensure that a question name does not contain anything nasty, and will fit in the DB field.
|
|
|
805 |
* @param string $name the raw question name.
|
|
|
806 |
* @return string a safe question name.
|
|
|
807 |
*/
|
|
|
808 |
public function clean_question_name($name) {
|
|
|
809 |
$name = clean_param($name, PARAM_TEXT); // Matches what the question editing form does.
|
|
|
810 |
$name = trim($name);
|
|
|
811 |
$trimlength = 251;
|
|
|
812 |
while (core_text::strlen($name) > 255 && $trimlength > 0) {
|
|
|
813 |
$name = shorten_text($name, $trimlength);
|
|
|
814 |
$trimlength -= 10;
|
|
|
815 |
}
|
|
|
816 |
return $name;
|
|
|
817 |
}
|
|
|
818 |
|
|
|
819 |
/**
|
|
|
820 |
* Add a blank combined feedback to a question object.
|
|
|
821 |
* @param object question
|
|
|
822 |
* @return object question
|
|
|
823 |
*/
|
|
|
824 |
protected function add_blank_combined_feedback($question) {
|
|
|
825 |
$question->correctfeedback = [
|
|
|
826 |
'text' => '',
|
|
|
827 |
'format' => $question->questiontextformat,
|
|
|
828 |
'files' => []
|
|
|
829 |
];
|
|
|
830 |
$question->partiallycorrectfeedback = [
|
|
|
831 |
'text' => '',
|
|
|
832 |
'format' => $question->questiontextformat,
|
|
|
833 |
'files' => []
|
|
|
834 |
];
|
|
|
835 |
$question->incorrectfeedback = [
|
|
|
836 |
'text' => '',
|
|
|
837 |
'format' => $question->questiontextformat,
|
|
|
838 |
'files' => []
|
|
|
839 |
];
|
|
|
840 |
return $question;
|
|
|
841 |
}
|
|
|
842 |
|
|
|
843 |
/**
|
|
|
844 |
* Given the data known to define a question in
|
|
|
845 |
* this format, this function converts it into a question
|
|
|
846 |
* object suitable for processing and insertion into Moodle.
|
|
|
847 |
*
|
|
|
848 |
* If your format does not use blank lines to delimit questions
|
|
|
849 |
* (e.g. an XML format) you must override 'readquestions' too
|
|
|
850 |
* @param $lines mixed data that represents question
|
|
|
851 |
* @return object question object
|
|
|
852 |
*/
|
|
|
853 |
protected function readquestion($lines) {
|
|
|
854 |
// We should never get there unless the qformat plugin is broken.
|
|
|
855 |
throw new coding_exception('Question format plugin is missing important code: readquestion.');
|
|
|
856 |
|
|
|
857 |
return null;
|
|
|
858 |
}
|
|
|
859 |
|
|
|
860 |
/**
|
|
|
861 |
* Override if any post-processing is required
|
|
|
862 |
* @return bool success
|
|
|
863 |
*/
|
|
|
864 |
public function importpostprocess() {
|
|
|
865 |
return true;
|
|
|
866 |
}
|
|
|
867 |
|
|
|
868 |
/*******************
|
|
|
869 |
* EXPORT FUNCTIONS
|
|
|
870 |
*******************/
|
|
|
871 |
|
|
|
872 |
/**
|
|
|
873 |
* Provide export functionality for plugin questiontypes
|
|
|
874 |
* Do not override
|
|
|
875 |
* @param name questiontype name
|
|
|
876 |
* @param question object data to export
|
|
|
877 |
* @param extra mixed any addition format specific data needed
|
|
|
878 |
* @return string the data to append to export or false if error (or unhandled)
|
|
|
879 |
*/
|
|
|
880 |
protected function try_exporting_using_qtypes($name, $question, $extra=null) {
|
|
|
881 |
// work out the name of format in use
|
|
|
882 |
$formatname = substr(get_class($this), strlen('qformat_'));
|
|
|
883 |
$methodname = "export_to_{$formatname}";
|
|
|
884 |
|
|
|
885 |
$qtype = question_bank::get_qtype($name, false);
|
|
|
886 |
if (method_exists($qtype, $methodname)) {
|
|
|
887 |
return $qtype->$methodname($question, $this, $extra);
|
|
|
888 |
}
|
|
|
889 |
return false;
|
|
|
890 |
}
|
|
|
891 |
|
|
|
892 |
/**
|
|
|
893 |
* Do any pre-processing that may be required
|
|
|
894 |
* @param bool success
|
|
|
895 |
*/
|
|
|
896 |
public function exportpreprocess() {
|
|
|
897 |
return true;
|
|
|
898 |
}
|
|
|
899 |
|
|
|
900 |
/**
|
|
|
901 |
* Enable any processing to be done on the content
|
|
|
902 |
* just prior to the file being saved
|
|
|
903 |
* default is to do nothing
|
|
|
904 |
* @param string output text
|
|
|
905 |
* @param string processed output text
|
|
|
906 |
*/
|
|
|
907 |
protected function presave_process($content) {
|
|
|
908 |
return $content;
|
|
|
909 |
}
|
|
|
910 |
|
|
|
911 |
/**
|
|
|
912 |
* Perform the export.
|
|
|
913 |
* For most types this should not need to be overrided.
|
|
|
914 |
*
|
|
|
915 |
* @param bool $checkcapabilities Whether to check capabilities when exporting the questions.
|
|
|
916 |
* @return string The content of the export.
|
|
|
917 |
*/
|
|
|
918 |
public function exportprocess($checkcapabilities = true) {
|
|
|
919 |
global $CFG, $DB;
|
|
|
920 |
|
|
|
921 |
// Raise time and memory, as exporting can be quite intensive.
|
|
|
922 |
core_php_time_limit::raise();
|
|
|
923 |
raise_memory_limit(MEMORY_EXTRA);
|
|
|
924 |
|
|
|
925 |
// Get the parents (from database) for this category.
|
|
|
926 |
$parents = [];
|
|
|
927 |
if ($this->category) {
|
|
|
928 |
$parents = question_categorylist_parents($this->category->id);
|
|
|
929 |
}
|
|
|
930 |
|
|
|
931 |
// get the questions (from database) in this category
|
|
|
932 |
// only get q's with no parents (no cloze subquestions specifically)
|
|
|
933 |
if ($this->category) {
|
|
|
934 |
// Export only the latest version of a question.
|
|
|
935 |
$questions = get_questions_category($this->category, true, true, true, true);
|
|
|
936 |
} else {
|
|
|
937 |
$questions = $this->questions;
|
|
|
938 |
}
|
|
|
939 |
|
|
|
940 |
$count = 0;
|
|
|
941 |
|
|
|
942 |
// results are first written into string (and then to a file)
|
|
|
943 |
// so create/initialize the string here
|
|
|
944 |
$expout = '';
|
|
|
945 |
|
|
|
946 |
// track which category questions are in
|
|
|
947 |
// if it changes we will record the category change in the output
|
|
|
948 |
// file if selected. 0 means that it will get printed before the 1st question
|
|
|
949 |
$trackcategory = 0;
|
|
|
950 |
|
|
|
951 |
// Array of categories written to file.
|
|
|
952 |
$writtencategories = [];
|
|
|
953 |
|
|
|
954 |
foreach ($questions as $question) {
|
|
|
955 |
// used by file api
|
|
|
956 |
$questionbankentry = question_bank::load_question($question->id);
|
|
|
957 |
$qcategory = $questionbankentry->category;
|
|
|
958 |
$contextid = $DB->get_field('question_categories', 'contextid', ['id' => $qcategory]);
|
|
|
959 |
$question->contextid = $contextid;
|
|
|
960 |
$question->idnumber = $questionbankentry->idnumber;
|
| 1441 |
ariadna |
961 |
|
|
|
962 |
// Do not export hidden questions.
|
|
|
963 |
if ($question->status === \core_question\local\bank\question_version_status::QUESTION_STATUS_HIDDEN) {
|
|
|
964 |
continue;
|
|
|
965 |
}
|
|
|
966 |
|
| 1 |
efrain |
967 |
if ($question->status === \core_question\local\bank\question_version_status::QUESTION_STATUS_READY) {
|
|
|
968 |
$question->status = 0;
|
|
|
969 |
} else {
|
|
|
970 |
$question->status = 1;
|
|
|
971 |
}
|
|
|
972 |
|
|
|
973 |
// do not export random questions
|
|
|
974 |
if ($question->qtype == 'random') {
|
|
|
975 |
continue;
|
|
|
976 |
}
|
|
|
977 |
|
|
|
978 |
// check if we need to record category change
|
|
|
979 |
if ($this->cattofile) {
|
|
|
980 |
$addnewcat = false;
|
|
|
981 |
if ($question->category != $trackcategory) {
|
|
|
982 |
$addnewcat = true;
|
|
|
983 |
$trackcategory = $question->category;
|
|
|
984 |
}
|
|
|
985 |
$trackcategoryparents = question_categorylist_parents($trackcategory);
|
|
|
986 |
// Check if we need to record empty parents categories.
|
|
|
987 |
foreach ($trackcategoryparents as $trackcategoryparent) {
|
|
|
988 |
// If parent wasn't written.
|
|
|
989 |
if (!in_array($trackcategoryparent, $writtencategories)) {
|
|
|
990 |
// If parent is empty.
|
|
|
991 |
if (!count($DB->get_records('question_bank_entries', ['questioncategoryid' => $trackcategoryparent]))) {
|
|
|
992 |
$categoryname = $this->get_category_path($trackcategoryparent, $this->contexttofile);
|
|
|
993 |
$categoryinfo = $DB->get_record('question_categories', array('id' => $trackcategoryparent),
|
|
|
994 |
'name, info, infoformat, idnumber', MUST_EXIST);
|
|
|
995 |
if ($categoryinfo->name != 'top') {
|
|
|
996 |
// Create 'dummy' question for parent category.
|
|
|
997 |
$dummyquestion = $this->create_dummy_question_representing_category($categoryname, $categoryinfo);
|
|
|
998 |
$expout .= $this->writequestion($dummyquestion) . "\n";
|
|
|
999 |
$writtencategories[] = $trackcategoryparent;
|
|
|
1000 |
}
|
|
|
1001 |
}
|
|
|
1002 |
}
|
|
|
1003 |
}
|
|
|
1004 |
if ($addnewcat && !in_array($trackcategory, $writtencategories)) {
|
|
|
1005 |
$categoryname = $this->get_category_path($trackcategory, $this->contexttofile);
|
|
|
1006 |
$categoryinfo = $DB->get_record('question_categories', array('id' => $trackcategory),
|
|
|
1007 |
'info, infoformat, idnumber', MUST_EXIST);
|
|
|
1008 |
// Create 'dummy' question for category.
|
|
|
1009 |
$dummyquestion = $this->create_dummy_question_representing_category($categoryname, $categoryinfo);
|
|
|
1010 |
$expout .= $this->writequestion($dummyquestion) . "\n";
|
|
|
1011 |
$writtencategories[] = $trackcategory;
|
|
|
1012 |
}
|
|
|
1013 |
}
|
|
|
1014 |
|
|
|
1015 |
// Add the question to result.
|
|
|
1016 |
if (!$checkcapabilities || question_has_capability_on($question, 'view')) {
|
|
|
1017 |
$expquestion = $this->writequestion($question, $contextid);
|
|
|
1018 |
// Don't add anything if witequestion returned nothing.
|
|
|
1019 |
// This will permit qformat plugins to exclude some questions.
|
|
|
1020 |
if ($expquestion !== null) {
|
|
|
1021 |
$expout .= $expquestion . "\n";
|
|
|
1022 |
$count++;
|
|
|
1023 |
}
|
|
|
1024 |
}
|
|
|
1025 |
}
|
|
|
1026 |
|
| 1441 |
ariadna |
1027 |
// Did we actually process anything? Then continue path for following error checks.
|
| 1 |
efrain |
1028 |
if ($count==0) {
|
| 1441 |
ariadna |
1029 |
$contextid = $DB->get_field('question_categories', 'contextid', ['id' => $this->category->id]);
|
|
|
1030 |
$context = context::instance_by_id($contextid);
|
|
|
1031 |
$continuepath = "{$CFG->wwwroot}/question/bank/exportquestions/export.php?cmid={$context->instanceid}";
|
| 1 |
efrain |
1032 |
throw new \moodle_exception('noquestions', 'question', $continuepath);
|
|
|
1033 |
}
|
|
|
1034 |
|
|
|
1035 |
// final pre-process on exported data
|
|
|
1036 |
$expout = $this->presave_process($expout);
|
|
|
1037 |
return $expout;
|
|
|
1038 |
}
|
|
|
1039 |
|
|
|
1040 |
/**
|
|
|
1041 |
* Create 'dummy' question for category export.
|
|
|
1042 |
* @param string $categoryname the name of the category
|
|
|
1043 |
* @param object $categoryinfo description of the category
|
|
|
1044 |
* @return stdClass 'dummy' question for category
|
|
|
1045 |
*/
|
|
|
1046 |
protected function create_dummy_question_representing_category(string $categoryname, $categoryinfo) {
|
|
|
1047 |
$dummyquestion = new stdClass();
|
|
|
1048 |
$dummyquestion->qtype = 'category';
|
|
|
1049 |
$dummyquestion->category = $categoryname;
|
|
|
1050 |
$dummyquestion->id = 0;
|
|
|
1051 |
$dummyquestion->questiontextformat = '';
|
|
|
1052 |
$dummyquestion->contextid = 0;
|
|
|
1053 |
$dummyquestion->info = $categoryinfo->info;
|
|
|
1054 |
$dummyquestion->infoformat = $categoryinfo->infoformat;
|
|
|
1055 |
$dummyquestion->idnumber = $categoryinfo->idnumber;
|
|
|
1056 |
$dummyquestion->name = 'Switch category to ' . $categoryname;
|
|
|
1057 |
return $dummyquestion;
|
|
|
1058 |
}
|
|
|
1059 |
|
|
|
1060 |
/**
|
|
|
1061 |
* get the category as a path (e.g., tom/dick/harry)
|
|
|
1062 |
* @param int id the id of the most nested catgory
|
|
|
1063 |
* @return string the path
|
|
|
1064 |
*/
|
|
|
1065 |
protected function get_category_path($id, $includecontext = true) {
|
|
|
1066 |
global $DB;
|
|
|
1067 |
|
|
|
1068 |
if (!$category = $DB->get_record('question_categories', array('id' => $id))) {
|
|
|
1069 |
throw new \moodle_exception('cannotfindcategory', 'error', '', $id);
|
|
|
1070 |
}
|
|
|
1071 |
$contextstring = $this->translator->context_to_string($category->contextid);
|
|
|
1072 |
|
|
|
1073 |
$pathsections = array();
|
|
|
1074 |
do {
|
|
|
1075 |
$pathsections[] = $category->name;
|
|
|
1076 |
$id = $category->parent;
|
|
|
1077 |
} while ($category = $DB->get_record('question_categories', array('id' => $id)));
|
|
|
1078 |
|
|
|
1079 |
if ($includecontext) {
|
|
|
1080 |
$pathsections[] = '$' . $contextstring . '$';
|
|
|
1081 |
}
|
|
|
1082 |
|
|
|
1083 |
$path = $this->assemble_category_path(array_reverse($pathsections));
|
|
|
1084 |
|
|
|
1085 |
return $path;
|
|
|
1086 |
}
|
|
|
1087 |
|
|
|
1088 |
/**
|
|
|
1089 |
* Convert a list of category names, possibly preceeded by one of the
|
|
|
1090 |
* context tokens like $course$, into a string representation of the
|
|
|
1091 |
* category path.
|
|
|
1092 |
*
|
|
|
1093 |
* Names are separated by / delimiters. And /s in the name are replaced by //.
|
|
|
1094 |
*
|
|
|
1095 |
* To reverse the process and split the paths into names, use
|
|
|
1096 |
* {@link split_category_path()}.
|
|
|
1097 |
*
|
|
|
1098 |
* @param array $names
|
|
|
1099 |
* @return string
|
|
|
1100 |
*/
|
|
|
1101 |
protected function assemble_category_path($names) {
|
|
|
1102 |
$escapednames = array();
|
|
|
1103 |
foreach ($names as $name) {
|
|
|
1104 |
$escapedname = str_replace('/', '//', $name);
|
|
|
1105 |
if (substr($escapedname, 0, 1) == '/') {
|
|
|
1106 |
$escapedname = ' ' . $escapedname;
|
|
|
1107 |
}
|
|
|
1108 |
if (substr($escapedname, -1) == '/') {
|
|
|
1109 |
$escapedname = $escapedname . ' ';
|
|
|
1110 |
}
|
|
|
1111 |
$escapednames[] = $escapedname;
|
|
|
1112 |
}
|
|
|
1113 |
return implode('/', $escapednames);
|
|
|
1114 |
}
|
|
|
1115 |
|
|
|
1116 |
/**
|
|
|
1117 |
* Convert a string, as returned by {@link assemble_category_path()},
|
|
|
1118 |
* back into an array of category names.
|
|
|
1119 |
*
|
|
|
1120 |
* Each category name is cleaned by a call to clean_param(, PARAM_TEXT),
|
|
|
1121 |
* which matches the cleaning in question/bank/managecategories/category_form.php.
|
|
|
1122 |
*
|
|
|
1123 |
* @param string $path
|
|
|
1124 |
* @return array of category names.
|
|
|
1125 |
*/
|
|
|
1126 |
protected function split_category_path($path) {
|
|
|
1127 |
$rawnames = preg_split('~(?<!/)/(?!/)~', $path);
|
|
|
1128 |
$names = array();
|
|
|
1129 |
foreach ($rawnames as $rawname) {
|
|
|
1130 |
$names[] = clean_param(trim(str_replace('//', '/', $rawname)), PARAM_TEXT);
|
|
|
1131 |
}
|
|
|
1132 |
return $names;
|
|
|
1133 |
}
|
|
|
1134 |
|
|
|
1135 |
/**
|
|
|
1136 |
* Do an post-processing that may be required
|
|
|
1137 |
* @return bool success
|
|
|
1138 |
*/
|
|
|
1139 |
protected function exportpostprocess() {
|
|
|
1140 |
return true;
|
|
|
1141 |
}
|
|
|
1142 |
|
|
|
1143 |
/**
|
|
|
1144 |
* convert a single question object into text output in the given
|
|
|
1145 |
* format.
|
|
|
1146 |
* This must be overriden
|
|
|
1147 |
* @param object question question object
|
|
|
1148 |
* @return mixed question export text or null if not implemented
|
|
|
1149 |
*/
|
|
|
1150 |
protected function writequestion($question) {
|
|
|
1151 |
// if not overidden, then this is an error.
|
|
|
1152 |
throw new coding_exception('Question format plugin is missing important code: writequestion.');
|
|
|
1153 |
return null;
|
|
|
1154 |
}
|
|
|
1155 |
|
|
|
1156 |
/**
|
|
|
1157 |
* Convert the question text to plain text, so it can safely be displayed
|
|
|
1158 |
* during import to let the user see roughly what is going on.
|
|
|
1159 |
*/
|
|
|
1160 |
protected function format_question_text($question) {
|
|
|
1161 |
return s(question_utils::to_plain_text($question->questiontext,
|
|
|
1162 |
$question->questiontextformat));
|
|
|
1163 |
}
|
|
|
1164 |
}
|
|
|
1165 |
|
|
|
1166 |
class qformat_based_on_xml extends qformat_default {
|
|
|
1167 |
|
|
|
1168 |
/**
|
|
|
1169 |
* A lot of imported files contain unwanted entities.
|
|
|
1170 |
* This method tries to clean up all known problems.
|
|
|
1171 |
* @param string str string to correct
|
|
|
1172 |
* @return string the corrected string
|
|
|
1173 |
*/
|
|
|
1174 |
public function cleaninput($str) {
|
|
|
1175 |
|
|
|
1176 |
$html_code_list = array(
|
|
|
1177 |
"'" => "'",
|
|
|
1178 |
"’" => "'",
|
|
|
1179 |
"“" => "\"",
|
|
|
1180 |
"”" => "\"",
|
|
|
1181 |
"–" => "-",
|
|
|
1182 |
"—" => "-",
|
|
|
1183 |
);
|
|
|
1184 |
$str = strtr($str, $html_code_list);
|
|
|
1185 |
// Use core_text entities_to_utf8 function to convert only numerical entities.
|
|
|
1186 |
$str = core_text::entities_to_utf8($str, false);
|
|
|
1187 |
return $str;
|
|
|
1188 |
}
|
|
|
1189 |
|
|
|
1190 |
/**
|
|
|
1191 |
* Return the array moodle is expecting
|
|
|
1192 |
* for an HTML text. No processing is done on $text.
|
|
|
1193 |
* qformat classes that want to process $text
|
|
|
1194 |
* for instance to import external images files
|
|
|
1195 |
* and recode urls in $text must overwrite this method.
|
|
|
1196 |
* @param array $text some HTML text string
|
|
|
1197 |
* @return array with keys text, format and files.
|
|
|
1198 |
*/
|
|
|
1199 |
public function text_field($text) {
|
|
|
1200 |
return array(
|
|
|
1201 |
'text' => trim($text),
|
|
|
1202 |
'format' => FORMAT_HTML,
|
|
|
1203 |
'files' => array(),
|
|
|
1204 |
);
|
|
|
1205 |
}
|
|
|
1206 |
|
|
|
1207 |
/**
|
|
|
1208 |
* Return the value of a node, given a path to the node
|
|
|
1209 |
* if it doesn't exist return the default value.
|
|
|
1210 |
* @param array xml data to read
|
|
|
1211 |
* @param array path path to node expressed as array
|
|
|
1212 |
* @param mixed default
|
|
|
1213 |
* @param bool istext process as text
|
|
|
1214 |
* @param string error if set value must exist, return false and issue message if not
|
|
|
1215 |
* @return mixed value
|
|
|
1216 |
*/
|
|
|
1217 |
public function getpath($xml, $path, $default, $istext=false, $error='') {
|
|
|
1218 |
foreach ($path as $index) {
|
|
|
1219 |
if (!isset($xml[$index])) {
|
|
|
1220 |
if (!empty($error)) {
|
|
|
1221 |
$this->error($error);
|
|
|
1222 |
return false;
|
|
|
1223 |
} else {
|
|
|
1224 |
return $default;
|
|
|
1225 |
}
|
|
|
1226 |
}
|
|
|
1227 |
|
|
|
1228 |
$xml = $xml[$index];
|
|
|
1229 |
}
|
|
|
1230 |
|
|
|
1231 |
if ($istext) {
|
|
|
1232 |
if (!is_string($xml)) {
|
|
|
1233 |
$this->error(get_string('invalidxml', 'qformat_xml'));
|
|
|
1234 |
}
|
|
|
1235 |
$xml = trim($xml);
|
|
|
1236 |
}
|
|
|
1237 |
|
|
|
1238 |
return $xml;
|
|
|
1239 |
}
|
|
|
1240 |
}
|