Modules/Course/classes/class.ilFileDataCourse.php

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<?php
/*
        +-----------------------------------------------------------------------------+
        | ILIAS open source                                                           |
        +-----------------------------------------------------------------------------+
        | Copyright (c) 1998-2001 ILIAS open source, University of Cologne            |
        |                                                                             |
        | This program is free software; you can redistribute it and/or               |
        | modify it under the terms of the GNU General Public License                 |
        | as published by the Free Software Foundation; either version 2              |
        | of the License, or (at your option) any later version.                      |
        |                                                                             |
        | This program is distributed in the hope that it will be useful,             |
        | but WITHOUT ANY WARRANTY; without even the implied warranty of              |
        | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the               |
        | GNU General Public License for more details.                                |
        |                                                                             |
        | You should have received a copy of the GNU General Public License           |
        | along with this program; if not, write to the Free Software                 |
        | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA. |
        +-----------------------------------------------------------------------------+
*/


require_once("classes/class.ilFileData.php");
                                
class ilFileDataCourse extends ilFileData
{
        var $course_path;

        private $course_id;

        function ilFileDataCourse($a_course_id)
        {
                define('COURSE_PATH','course');
                parent::ilFileData();
                $this->course_path = parent::getPath()."/".COURSE_PATH;
                $this->course_id = $a_course_id;
        
                // IF DIRECTORY ISN'T CREATED CREATE IT
                if(!$this->__checkPath())
                {
                        $this->__initDirectory();
                }
                // Check import dir
                $this->__checkImportPath();
        }
        
        function getArchiveFile($a_rel_name)
        {
                if(@file_exists($this->course_path.'/'.$a_rel_name.'.zip'))
                {
                        return $this->course_path.'/'.$a_rel_name.'.zip';
                }
                if(@file_exists($this->course_path.'/'.$a_rel_name.'.pdf'))
                {
                        return $this->course_path.'/'.$a_rel_name.'.pdf';
                }
                return false;
        }
        
        public function getMemberExportFiles()
        {
                $files = array();
                $dp = opendir($this->course_path);

                while($file = readdir($dp))
                {
                        if(is_dir($file))
                        {
                                continue;
                        }
                        
                        if(preg_match("/^([0-9]{10})_[a-zA-Z]*_export_([a-z]+)_([0-9]+)\.[a-z]+$/",$file,$matches) and $matches[3] == $this->course_id)
                        {
                                $timest = $matches[1];
                                $file_info['name'] = $matches[0];
                                $file_info['timest'] = $matches[1];
                                $file_info['type'] = $matches[2];
                                $file_info['id'] = $matches[3];
                                $file_info['size'] = filesize($this->course_path.'/'.$file);
                                
                                $files[$timest] = $file_info;
                        }
                }
                closedir($dp);
                return $files ? $files : array();
        }
        
        public function deleteMemberExportFile($a_name)
        {
                $file_name = $this->course_path.'/'.$a_name;
                if(@file_exists($file_name))
                {
                        @unlink($file_name);
                }
        }

        public function getMemberExportFile($a_name)
        {
                $file_name = $this->course_path.'/'.$a_name;
                if(@file_exists($file_name))
                {
                        return file_get_contents($file_name);
                }
        }


        function deleteArchive($a_rel_name)
        {
                $this->deleteZipFile($this->course_path.'/'.$a_rel_name.'.zip');
                $this->deleteDirectory($this->course_path.'/'.$a_rel_name);
                $this->deleteDirectory(CLIENT_WEB_DIR.'/courses/'.$a_rel_name);
                $this->deletePdf($this->course_path.'/'.$a_rel_name.'.pdf');

                return true;
        }
        function deleteZipFile($a_abs_name)
        {
                if(@file_exists($a_abs_name))
                {
                        @unlink($a_abs_name);

                        return true;
                }
                return false;
        }
        function deleteDirectory($a_abs_name)
        {
                if(file_exists($a_abs_name))
                {
                        ilUtil::delDir($a_abs_name);
                        
                        return true;
                }
                return false;
        }
        function deletePdf($a_abs_name)
        {
                if(@file_exists($a_abs_name))
                {
                        @unlink($a_abs_name);

                        return true;
                }
                return false;
        }

        function copy($a_from,$a_to)
        {
                if(@file_exists($a_from))
                {
                        @copy($a_from,$this->getCoursePath().'/'.$a_to);

                        return true;
                }
                return false;
        }

        function rCopy($a_from,$a_to)
        {
                ilUtil::rCopy($a_from,$this->getCoursePath().'/'.$a_to);

                return true;
        }


        function addDirectory($a_rel_name)
        {
                ilUtil::makeDir($this->getCoursePath().'/'.$a_rel_name);

                return true;
        }

        function writeToFile($a_data,$a_rel_name)
        {
                if(!$fp = @fopen($this->getCoursePath().'/'.$a_rel_name,'w+'))
                {
                        die("Cannot open file: ".$this->getCoursePath().'/'.$a_rel_name);
                }
                @fwrite($fp,$a_data);

                return true;
        }

        function zipFile($a_rel_name,$a_zip_name)
        {
                ilUtil::zip($this->getCoursePath().'/'.$a_rel_name,$this->getCoursePath().'/'.$a_zip_name);

                // RETURN filesize
                return filesize($this->getCoursePath().'/'.$a_zip_name);
        }


        function getCoursePath()
        {
                return $this->course_path;
        }

        function createOnlineVersion($a_rel_name)
        {
                ilUtil::makeDir(CLIENT_WEB_DIR.'/courses/'.$a_rel_name);
                ilUtil::rCopy($this->getCoursePath().'/'.$a_rel_name,CLIENT_WEB_DIR.'/courses/'.$a_rel_name);

                return true;
        }

        function getOnlineLink($a_rel_name)
        {
                return ilUtil::getWebspaceDir('filesystem').'/courses/'.$a_rel_name.'/index.html';
        }


        // METHODS FOR XML IMPORT OF COURSE
        function createImportFile($a_tmp_name,$a_name)
        {
                ilUtil::makeDir($this->getCoursePath().'/import/crs_'.$this->course_id);

                ilUtil::moveUploadedFile($a_tmp_name,
                                                                 $a_name, 
                                                                 $this->getCoursePath().'/import/crs_'.$this->course_id.'/'.$a_name);
                $this->import_file_info = pathinfo($this->getCoursePath().'/import/crs_'.$this->course_id.'/'.$a_name);

        }

        function unpackImportFile()
        {
                return ilUtil::unzip($this->getCoursePath().'/import/crs_'.$this->course_id.'/'.$this->import_file_info['basename']);
        }

        function validateImportFile()
        {
                if(!is_dir($this->getCoursePath().'/import/crs_'.$this->course_id).'/'.
                   basename($this->import_file_info['basename'],'.zip'))
                {
                        return false;
                }
                if(!file_exists($this->getCoursePath().'/import/crs_'.$this->course_id
                                                .'/'.basename($this->import_file_info['basename'],'.zip')
                                                .'/'.basename($this->import_file_info['basename'],'.zip').'.xml'))
                {
                        return false;
                }
        }

        function getImportFile()
        {
                return $this->getCoursePath().'/import/crs_'.$this->course_id
                        .'/'.basename($this->import_file_info['basename'],'.zip')
                        .'/'.basename($this->import_file_info['basename'],'.zip').'.xml';
        }
        



        // PRIVATE METHODS
        function __checkPath()
        {
                if(!@file_exists($this->getCoursePath()))
                {
                        return false;
                }
                if(!@file_exists(CLIENT_WEB_DIR.'/courses'))
                {
                        ilUtil::makeDir(CLIENT_WEB_DIR.'/courses');
                }

                        
                $this->__checkReadWrite();

                return true;
        }
        
        function __checkImportPath()
        {
                if(!@file_exists($this->getCoursePath().'/import'))
                {
                        ilUtil::makeDir($this->getCoursePath().'/import');
                }

                if(!is_writable($this->getCoursePath().'/import') or !is_readable($this->getCoursePath().'/import'))
                {
                        $this->ilias->raiseError("Course import path is not readable/writable by webserver",$this->ilias->error_obj->FATAL);
                }
        }

        function __checkReadWrite()
        {
                if(is_writable($this->course_path) && is_readable($this->course_path))
                {
                        return true;
                }
                else
                {
                        $this->ilias->raiseError("Course directory is not readable/writable by webserver",$this->ilias->error_obj->FATAL);
                }
        }
        function __initDirectory()
        {
                if(is_writable($this->getPath()))
                {
                        ilUtil::makeDir($this->getPath().'/'.COURSE_PATH);
                        $this->course_path = $this->getPath().'/'.COURSE_PATH;
                        
                        return true;
                }
                return false;
        }
}