mirror of
https://github.com/moodle/moodle.git
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844 lines
28 KiB
PHP
844 lines
28 KiB
PHP
<?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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* Utility class for browsing of course files.
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*
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* @package core_files
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* @copyright 2008 Petr Skoda (http://skodak.org)
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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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* Represents a course context in the tree navigated by {@link file_browser}.
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*
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* @package core_files
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* @copyright 2008 Petr Skoda (http://skodak.org)
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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 file_info_context_course extends file_info {
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/** @var stdClass course object */
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protected $course;
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/**
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* Constructor
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*
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* @param file_browser $browser file browser instance
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* @param stdClass $context context object
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* @param stdClass $course course object
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*/
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public function __construct($browser, $context, $course) {
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parent::__construct($browser, $context);
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$this->course = $course;
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}
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/**
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* Return information about this specific context level
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*
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* @param string $component component
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* @param string $filearea file area
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* @param int $itemid item ID
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* @param string $filepath file path
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* @param string $filename file name
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* @return file_info|null file_info instance or null if not found or access not allowed
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*/
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public function get_file_info($component, $filearea, $itemid, $filepath, $filename) {
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// try to emulate require_login() tests here
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if (!isloggedin()) {
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return null;
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}
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if (!$this->course->visible and !has_capability('moodle/course:viewhiddencourses', $this->context)) {
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return null;
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}
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if (!is_viewing($this->context) and !is_enrolled($this->context)) {
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// no peaking here if not enrolled or inspector
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return null;
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}
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if (empty($component)) {
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return $this;
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}
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$methodname = "get_area_{$component}_{$filearea}";
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if (method_exists($this, $methodname)) {
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return $this->$methodname($itemid, $filepath, $filename);
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}
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return null;
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}
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/**
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* Gets a stored file for the course summary filearea directory
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*
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* @param int $itemid item ID
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* @param string $filepath file path
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* @param string $filename file name
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* @return file_info|null file_info instance or null if not found or access not allowed
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*/
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protected function get_area_course_summary($itemid, $filepath, $filename) {
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global $CFG;
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if (!has_capability('moodle/course:update', $this->context)) {
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return null;
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}
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if (is_null($itemid)) {
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return $this;
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}
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$fs = get_file_storage();
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$filepath = is_null($filepath) ? '/' : $filepath;
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$filename = is_null($filename) ? '.' : $filename;
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if (!$storedfile = $fs->get_file($this->context->id, 'course', 'summary', 0, $filepath, $filename)) {
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if ($filepath === '/' and $filename === '.') {
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$storedfile = new virtual_root_file($this->context->id, 'course', 'summary', 0);
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} else {
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// not found
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return null;
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}
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}
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$urlbase = $CFG->wwwroot.'/pluginfile.php';
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return new file_info_stored($this->browser, $this->context, $storedfile, $urlbase, get_string('areacourseintro', 'repository'), false, true, true, false);
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}
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/**
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* Gets a stored file for the course section filearea directory
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*
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* @param int $itemid item ID
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* @param string $filepath file path
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* @param string $filename file name
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* @return file_info|null file_info instance or null if not found or access not allowed
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*/
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protected function get_area_course_section($itemid, $filepath, $filename) {
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global $CFG, $DB;
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if (!has_capability('moodle/course:update', $this->context)) {
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return null;
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}
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if (empty($itemid)) {
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// list all sections
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return new file_info_area_course_section($this->browser, $this->context, $this->course, $this);
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}
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if (!$section = $DB->get_record('course_sections', array('course'=>$this->course->id, 'id'=>$itemid))) {
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return null; // does not exist
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}
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$fs = get_file_storage();
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$filepath = is_null($filepath) ? '/' : $filepath;
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$filename = is_null($filename) ? '.' : $filename;
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if (!$storedfile = $fs->get_file($this->context->id, 'course', 'section', $itemid, $filepath, $filename)) {
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if ($filepath === '/' and $filename === '.') {
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$storedfile = new virtual_root_file($this->context->id, 'course', 'section', $itemid);
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} else {
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// not found
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return null;
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}
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}
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$urlbase = $CFG->wwwroot.'/pluginfile.php';
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return new file_info_stored($this->browser, $this->context, $storedfile, $urlbase, $section->section, true, true, true, false);
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}
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/**
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* Gets a stored file for the course legacy filearea directory
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*
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* @param int $itemid item ID
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* @param string $filepath file path
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* @param string $filename file name
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* @return file_info|null file_info instance or null if not found or access not allowed
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*/
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protected function get_area_course_legacy($itemid, $filepath, $filename) {
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if (!has_capability('moodle/course:managefiles', $this->context)) {
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return null;
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}
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if ($this->course->id != SITEID and $this->course->legacyfiles != 2) {
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// bad luck, legacy course files not used any more
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}
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if (is_null($itemid)) {
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return $this;
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}
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$fs = get_file_storage();
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$filepath = is_null($filepath) ? '/' : $filepath;
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$filename = is_null($filename) ? '.' : $filename;
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if (!$storedfile = $fs->get_file($this->context->id, 'course', 'legacy', 0, $filepath, $filename)) {
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if ($filepath === '/' and $filename === '.') {
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$storedfile = new virtual_root_file($this->context->id, 'course', 'legacy', 0);
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} else {
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// not found
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return null;
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}
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}
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return new file_info_area_course_legacy($this->browser, $this->context, $storedfile);
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}
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/**
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* Gets a stored file for the backup course filearea directory
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*
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* @param int $itemid item ID
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* @param string $filepath file path
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* @param string $filename file name
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* @return file_info|null file_info instance or null if not found or access not allowed
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*/
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protected function get_area_backup_course($itemid, $filepath, $filename) {
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global $CFG;
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if (!has_capability('moodle/backup:backupcourse', $this->context) and !has_capability('moodle/restore:restorecourse', $this->context)) {
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return null;
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}
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if (is_null($itemid)) {
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return $this;
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}
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$fs = get_file_storage();
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$filepath = is_null($filepath) ? '/' : $filepath;
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$filename = is_null($filename) ? '.' : $filename;
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if (!$storedfile = $fs->get_file($this->context->id, 'backup', 'course', 0, $filepath, $filename)) {
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if ($filepath === '/' and $filename === '.') {
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$storedfile = new virtual_root_file($this->context->id, 'backup', 'course', 0);
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} else {
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// not found
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return null;
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}
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}
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$downloadable = has_capability('moodle/backup:downloadfile', $this->context);
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$uploadable = has_capability('moodle/restore:uploadfile', $this->context);
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$urlbase = $CFG->wwwroot.'/pluginfile.php';
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return new file_info_stored($this->browser, $this->context, $storedfile, $urlbase, get_string('coursebackup', 'repository'), false, $downloadable, $uploadable, false);
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}
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/**
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* Gets a stored file for the automated backup filearea directory
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*
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* @param int $itemid item ID
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* @param string $filepath file path
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* @param string $filename file name
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* @return file_info|null
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*/
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protected function get_area_backup_automated($itemid, $filepath, $filename) {
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global $CFG;
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if (!has_capability('moodle/restore:viewautomatedfilearea', $this->context)) {
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return null;
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}
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if (is_null($itemid)) {
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return $this;
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}
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$fs = get_file_storage();
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$filepath = is_null($filepath) ? '/' : $filepath;
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$filename = is_null($filename) ? '.' : $filename;
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if (!$storedfile = $fs->get_file($this->context->id, 'backup', 'automated', 0, $filepath, $filename)) {
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if ($filepath === '/' and $filename === '.') {
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$storedfile = new virtual_root_file($this->context->id, 'backup', 'automated', 0);
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} else {
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// not found
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return null;
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}
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}
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$downloadable = has_capability('moodle/site:config', $this->context);
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$uploadable = false;
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$urlbase = $CFG->wwwroot.'/pluginfile.php';
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return new file_info_stored($this->browser, $this->context, $storedfile, $urlbase, get_string('automatedbackup', 'repository'), true, $downloadable, $uploadable, false);
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}
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/**
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* Gets a stored file for the backup section filearea directory
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*
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* @param int $itemid item ID
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* @param string $filepath file path
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* @param string $filename file name
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* @return file_info|null file_info instance or null if not found or access not allowed
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*/
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protected function get_area_backup_section($itemid, $filepath, $filename) {
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global $CFG, $DB;
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if (!has_capability('moodle/backup:backupcourse', $this->context) and !has_capability('moodle/restore:restorecourse', $this->context)) {
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return null;
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}
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if (empty($itemid)) {
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// list all sections
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return new file_info_area_backup_section($this->browser, $this->context, $this->course, $this);
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}
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if (!$section = $DB->get_record('course_sections', array('course'=>$this->course->id, 'id'=>$itemid))) {
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return null; // does not exist
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}
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$fs = get_file_storage();
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$filepath = is_null($filepath) ? '/' : $filepath;
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$filename = is_null($filename) ? '.' : $filename;
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if (!$storedfile = $fs->get_file($this->context->id, 'backup', 'section', $itemid, $filepath, $filename)) {
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if ($filepath === '/' and $filename === '.') {
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$storedfile = new virtual_root_file($this->context->id, 'backup', 'section', $itemid);
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} else {
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// not found
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return null;
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}
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}
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$downloadable = has_capability('moodle/backup:downloadfile', $this->context);
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$uploadable = has_capability('moodle/restore:uploadfile', $this->context);
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$urlbase = $CFG->wwwroot.'/pluginfile.php';
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return new file_info_stored($this->browser, $this->context, $storedfile, $urlbase, $section->id, true, $downloadable, $uploadable, false);
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}
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/**
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* Returns localised visible name.
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*
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* @return string
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*/
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public function get_visible_name() {
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return ($this->course->id == SITEID) ? get_string('frontpage', 'admin') : format_string($this->course->fullname, true, array('context'=>$this->context));
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}
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/**
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* Whether or not new files or directories can be added
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*
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* @return bool
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*/
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public function is_writable() {
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return false;
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}
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/**
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* Whether or not this is a directory
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*
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* @return bool
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*/
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public function is_directory() {
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return true;
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}
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/**
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* Returns list of children.
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*
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* @return array of file_info instances
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*/
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public function get_children() {
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return $this->get_filtered_children('*', false, true);
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}
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/**
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* Help function to return files matching extensions or their count
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*
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* @param string|array $extensions, either '*' or array of lowercase extensions, i.e. array('.gif','.jpg')
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* @param bool|int $countonly if false returns the children, if an int returns just the
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* count of children but stops counting when $countonly number of children is reached
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* @param bool $returnemptyfolders if true returns items that don't have matching files inside
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* @return array|int array of file_info instances or the count
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*/
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private function get_filtered_children($extensions = '*', $countonly = false, $returnemptyfolders = false) {
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$areas = array(
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array('course', 'summary'),
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array('course', 'section'),
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array('backup', 'section'),
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array('backup', 'course'),
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array('backup', 'automated'),
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array('course', 'legacy')
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);
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$children = array();
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foreach ($areas as $area) {
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if ($child = $this->get_file_info($area[0], $area[1], 0, '/', '.')) {
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if ($returnemptyfolders || $child->count_non_empty_children($extensions)) {
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$children[] = $child;
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if (($countonly !== false) && count($children) >= $countonly) {
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return $countonly;
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}
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}
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}
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}
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if (!has_capability('moodle/course:managefiles', $this->context)) {
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// 'managefiles' capability is checked in every activity module callback.
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// Don't even waste time on retrieving the modules if we can't browse the files anyway
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} else {
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// now list all modules
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$modinfo = get_fast_modinfo($this->course);
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foreach ($modinfo->cms as $cminfo) {
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if (empty($cminfo->uservisible)) {
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continue;
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}
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$modcontext = context_module::instance($cminfo->id, IGNORE_MISSING);
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if ($child = $this->browser->get_file_info($modcontext)) {
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if ($returnemptyfolders || $child->count_non_empty_children($extensions)) {
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$children[] = $child;
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if (($countonly !== false) && count($children) >= $countonly) {
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return $countonly;
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}
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}
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}
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}
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}
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if ($countonly !== false) {
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return count($children);
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}
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return $children;
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}
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/**
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* Returns list of children which are either files matching the specified extensions
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* or folders that contain at least one such file.
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*
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* @param string|array $extensions, either '*' or array of lowercase extensions, i.e. array('.gif','.jpg')
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* @return array of file_info instances
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*/
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public function get_non_empty_children($extensions = '*') {
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return $this->get_filtered_children($extensions, false);
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}
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/**
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* Returns the number of children which are either files matching the specified extensions
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* or folders containing at least one such file.
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*
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* @param string|array $extensions, for example '*' or array('.gif','.jpg')
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* @param int $limit stop counting after at least $limit non-empty children are found
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* @return int
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*/
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public function count_non_empty_children($extensions = '*', $limit = 1) {
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return $this->get_filtered_children($extensions, $limit);
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}
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/**
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* Returns parent file_info instance
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*
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* @todo error checking if get_parent_contextid() returns false
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* @return file_info or null for root
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*/
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public function get_parent() {
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//TODO: error checking if get_parent_contextid() returns false
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$pcid = get_parent_contextid($this->context);
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$parent = context::instance_by_id($pcid, IGNORE_MISSING);
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return $this->browser->get_file_info($parent);
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}
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}
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/**
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* Subclass of file_info_stored for files in the course files area.
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*
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* @package core_files
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* @copyright 2008 Petr Skoda (http://skodak.org)
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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 file_info_area_course_legacy extends file_info_stored {
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/**
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* Constructor
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*
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* @param file_browser $browser file browser instance
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* @param stdClass $context context object
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* @param stored_file $storedfile stored_file instance
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*/
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public function __construct($browser, $context, $storedfile) {
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global $CFG;
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$urlbase = $CFG->wwwroot.'/file.php';
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parent::__construct($browser, $context, $storedfile, $urlbase, get_string('coursefiles'), false, true, true, false);
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}
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/**
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* Returns file download url
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*
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* @param bool $forcedownload whether or not force download
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* @param bool $https whether or not force https
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* @return string url
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*/
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public function get_url($forcedownload=false, $https=false) {
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if (!$this->is_readable()) {
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return null;
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}
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if ($this->lf->is_directory()) {
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return null;
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}
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$filepath = $this->lf->get_filepath();
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$filename = $this->lf->get_filename();
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$courseid = $this->context->instanceid;
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$path = '/'.$courseid.$filepath.$filename;
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return file_encode_url($this->urlbase, $path, $forcedownload, $https);
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}
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/**
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* Returns list of children.
|
|
*
|
|
* @return array of file_info instances
|
|
*/
|
|
public function get_children() {
|
|
if (!$this->lf->is_directory()) {
|
|
return array();
|
|
}
|
|
|
|
$result = array();
|
|
$fs = get_file_storage();
|
|
|
|
$storedfiles = $fs->get_directory_files($this->context->id, 'course', 'legacy', 0, $this->lf->get_filepath(), false, true, "filepath ASC, filename ASC");
|
|
foreach ($storedfiles as $file) {
|
|
$result[] = new file_info_area_course_legacy($this->browser, $this->context, $file);
|
|
}
|
|
|
|
return $result;
|
|
}
|
|
|
|
/**
|
|
* Returns list of children which are either files matching the specified extensions
|
|
* or folders that contain at least one such file.
|
|
*
|
|
* @param string|array $extensions, either '*' or array of lowercase extensions, i.e. array('.gif','.jpg')
|
|
* @return array of file_info instances
|
|
*/
|
|
public function get_non_empty_children($extensions = '*') {
|
|
if (!$this->lf->is_directory()) {
|
|
return array();
|
|
}
|
|
|
|
$result = array();
|
|
$fs = get_file_storage();
|
|
|
|
$storedfiles = $fs->get_directory_files($this->context->id, 'course', 'legacy', 0,
|
|
$this->lf->get_filepath(), false, true, "filepath, filename");
|
|
foreach ($storedfiles as $file) {
|
|
$extension = textlib::strtolower(pathinfo($file->get_filename(), PATHINFO_EXTENSION));
|
|
if ($file->is_directory() || $extensions === '*' || (!empty($extension) && in_array('.'.$extension, $extensions))) {
|
|
$fileinfo = new file_info_area_course_legacy($this->browser, $this->context, $file, $this->urlbase, $this->topvisiblename,
|
|
$this->itemidused, $this->readaccess, $this->writeaccess, false);
|
|
if (!$file->is_directory() || $fileinfo->count_non_empty_children($extensions)) {
|
|
$result[] = $fileinfo;
|
|
}
|
|
}
|
|
}
|
|
|
|
return $result;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Represents a course category context in the tree navigated by {@link file_browser}.
|
|
*
|
|
* @package core_files
|
|
* @copyright 2008 Petr Skoda (http://skodak.org)
|
|
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
|
|
*/
|
|
class file_info_area_course_section extends file_info {
|
|
/** @var stdClass course object */
|
|
protected $course;
|
|
/** @var file_info_context_course course file info object */
|
|
protected $courseinfo;
|
|
|
|
/**
|
|
* Constructor
|
|
*
|
|
* @param file_browser $browser file browser instance
|
|
* @param stdClass $context context object
|
|
* @param stdClass $course course object
|
|
* @param file_info_context_course $courseinfo file info instance
|
|
*/
|
|
public function __construct($browser, $context, $course, file_info_context_course $courseinfo) {
|
|
parent::__construct($browser, $context);
|
|
$this->course = $course;
|
|
$this->courseinfo = $courseinfo;
|
|
}
|
|
|
|
/**
|
|
* Returns list of standard virtual file/directory identification.
|
|
* The difference from stored_file parameters is that null values
|
|
* are allowed in all fields
|
|
*
|
|
* @return array with keys contextid, filearea, itemid, filepath and filename
|
|
*/
|
|
public function get_params() {
|
|
return array('contextid' => $this->context->id,
|
|
'component' => 'course',
|
|
'filearea' => 'section',
|
|
'itemid' => null,
|
|
'filepath' => null,
|
|
'filename' => null);
|
|
}
|
|
|
|
/**
|
|
* Returns localised visible name.
|
|
*
|
|
* @return string
|
|
*/
|
|
public function get_visible_name() {
|
|
//$format = $this->course->format;
|
|
$sectionsname = get_string("coursesectionsummaries");
|
|
|
|
return $sectionsname;
|
|
}
|
|
|
|
/**
|
|
* Return whether or not new files or directories can be added
|
|
*
|
|
* @return bool
|
|
*/
|
|
public function is_writable() {
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* Return whether or not this is a empty area
|
|
*
|
|
* @return bool
|
|
*/
|
|
public function is_empty_area() {
|
|
$fs = get_file_storage();
|
|
return $fs->is_area_empty($this->context->id, 'course', 'section');
|
|
}
|
|
|
|
/**
|
|
* Return whether or not this is a empty area
|
|
*
|
|
* @return bool
|
|
*/
|
|
public function is_directory() {
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* Returns list of children.
|
|
*
|
|
* @return array of file_info instances
|
|
*/
|
|
public function get_children() {
|
|
global $DB;
|
|
|
|
$children = array();
|
|
|
|
$course_sections = $DB->get_records('course_sections', array('course'=>$this->course->id), 'section');
|
|
foreach ($course_sections as $section) {
|
|
if ($child = $this->courseinfo->get_file_info('course', 'section', $section->id, '/', '.')) {
|
|
$children[] = $child;
|
|
}
|
|
}
|
|
|
|
return $children;
|
|
}
|
|
|
|
/**
|
|
* Returns the number of children which are either files matching the specified extensions
|
|
* or folders containing at least one such file.
|
|
*
|
|
* @param string|array $extensions, for example '*' or array('.gif','.jpg')
|
|
* @param int $limit stop counting after at least $limit non-empty children are found
|
|
* @return int
|
|
*/
|
|
public function count_non_empty_children($extensions = '*', $limit = 1) {
|
|
global $DB;
|
|
$params1 = array(
|
|
'courseid' => $this->course->id,
|
|
'contextid' => $this->context->id,
|
|
'component' => 'course',
|
|
'filearea' => 'section',
|
|
'emptyfilename' => '.');
|
|
$sql1 = "SELECT DISTINCT cs.id FROM {files} f, {course_sections} cs
|
|
WHERE cs.course = :courseid
|
|
AND f.contextid = :contextid
|
|
AND f.component = :component
|
|
AND f.filearea = :filearea
|
|
AND f.itemid = cs.id
|
|
AND f.filename <> :emptyfilename";
|
|
list($sql2, $params2) = $this->build_search_files_sql($extensions);
|
|
$rs = $DB->get_recordset_sql($sql1. ' '. $sql2, array_merge($params1, $params2));
|
|
$cnt = 0;
|
|
foreach ($rs as $record) {
|
|
if ((++$cnt) >= $limit) {
|
|
break;
|
|
}
|
|
}
|
|
$rs->close();
|
|
return $cnt;
|
|
}
|
|
|
|
/**
|
|
* Returns parent file_info instance
|
|
*
|
|
* @return file_info|null file_info or null for root
|
|
*/
|
|
public function get_parent() {
|
|
return $this->courseinfo;
|
|
}
|
|
}
|
|
|
|
|
|
/**
|
|
* Implementation of course section backup area
|
|
*
|
|
* @package core_files
|
|
* @copyright 2008 Petr Skoda (http://skodak.org)
|
|
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
|
|
*/
|
|
class file_info_area_backup_section extends file_info {
|
|
/** @var stdClass course object */
|
|
protected $course;
|
|
/** @var file_info_context_course course file info object */
|
|
protected $courseinfo;
|
|
|
|
/**
|
|
* Constructor
|
|
*
|
|
* @param file_browser $browser file browser instance
|
|
* @param stdClass $context context object
|
|
* @param stdClass $course course object
|
|
* @param file_info_context_course $courseinfo file info instance
|
|
*/
|
|
public function __construct($browser, $context, $course, file_info_context_course $courseinfo) {
|
|
parent::__construct($browser, $context);
|
|
$this->course = $course;
|
|
$this->courseinfo = $courseinfo;
|
|
}
|
|
|
|
/**
|
|
* Returns list of standard virtual file/directory identification.
|
|
* The difference from stored_file parameters is that null values
|
|
* are allowed in all fields
|
|
*
|
|
* @return array with keys contextid, component, filearea, itemid, filepath and filename
|
|
*/
|
|
public function get_params() {
|
|
return array('contextid' => $this->context->id,
|
|
'component' => 'backup',
|
|
'filearea' => 'section',
|
|
'itemid' => null,
|
|
'filepath' => null,
|
|
'filename' => null);
|
|
}
|
|
|
|
/**
|
|
* Returns localised visible name.
|
|
*
|
|
* @return string
|
|
*/
|
|
public function get_visible_name() {
|
|
return get_string('sectionbackup', 'repository');
|
|
}
|
|
|
|
/**
|
|
* Return whether or not new files and directories can be added
|
|
*
|
|
* @return bool
|
|
*/
|
|
public function is_writable() {
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* Whether or not this is an empty area
|
|
*
|
|
* @return bool
|
|
*/
|
|
public function is_empty_area() {
|
|
$fs = get_file_storage();
|
|
return $fs->is_area_empty($this->context->id, 'backup', 'section');
|
|
}
|
|
|
|
/**
|
|
* Return whether or not this is a directory
|
|
*
|
|
* @return bool
|
|
*/
|
|
public function is_directory() {
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* Returns list of children.
|
|
*
|
|
* @return array of file_info instances
|
|
*/
|
|
public function get_children() {
|
|
global $DB;
|
|
|
|
$children = array();
|
|
|
|
$course_sections = $DB->get_records('course_sections', array('course'=>$this->course->id), 'section');
|
|
foreach ($course_sections as $section) {
|
|
if ($child = $this->courseinfo->get_file_info('backup', 'section', $section->id, '/', '.')) {
|
|
$children[] = $child;
|
|
}
|
|
}
|
|
|
|
return $children;
|
|
}
|
|
|
|
/**
|
|
* Returns the number of children which are either files matching the specified extensions
|
|
* or folders containing at least one such file.
|
|
*
|
|
* @param string|array $extensions, for example '*' or array('.gif','.jpg')
|
|
* @param int $limit stop counting after at least $limit non-empty children are found
|
|
* @return int
|
|
*/
|
|
public function count_non_empty_children($extensions = '*', $limit = 1) {
|
|
global $DB;
|
|
$params1 = array(
|
|
'courseid' => $this->course->id,
|
|
'contextid' => $this->context->id,
|
|
'component' => 'backup',
|
|
'filearea' => 'section',
|
|
'emptyfilename' => '.');
|
|
$sql1 = "SELECT DISTINCT cs.id AS sectionid FROM {files} f, {course_sections} cs
|
|
WHERE cs.course = :courseid
|
|
AND f.contextid = :contextid
|
|
AND f.component = :component
|
|
AND f.filearea = :filearea
|
|
AND f.itemid = cs.id
|
|
AND f.filename <> :emptyfilename";
|
|
list($sql2, $params2) = $this->build_search_files_sql($extensions);
|
|
$rs = $DB->get_recordset_sql($sql1. ' '. $sql2, array_merge($params1, $params2));
|
|
$cnt = 0;
|
|
foreach ($rs as $record) {
|
|
if ((++$cnt) >= $limit) {
|
|
break;
|
|
}
|
|
}
|
|
$rs->close();
|
|
return $cnt;
|
|
}
|
|
|
|
/**
|
|
* Returns parent file_info instance
|
|
*
|
|
* @return file_info or null for root
|
|
*/
|
|
public function get_parent() {
|
|
return $this->browser->get_file_info($this->context);
|
|
}
|
|
}
|