class.ilUpdateUtils.php

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<?php
/*
+-----------------------------------------------------------------------------+
| ILIAS open source                                                           |
+-----------------------------------------------------------------------------+
| Copyright (c) 1998-2006 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. |
+-----------------------------------------------------------------------------+
*/

class ilUpdateUtils
{
        
        function removeTrailingPathSeparators($path)
        {
                $path = preg_replace("/[\/\\\]+$/", "", $path);
                return $path;
        }
        


        function getWebspaceDir($mode = "filesystem")
        {
                global $ilias;

                if ($mode == "filesystem")
                {
                        return "./".ILIAS_WEB_DIR."/".$ilias->client_id;
                }
                else
                {
                        if (defined("ILIAS_MODULE"))
                        {
                                return "../".ILIAS_WEB_DIR."/".$ilias->client_id;
                        }
                        else
                        {
                                return "./".ILIAS_WEB_DIR."/".$ilias->client_id;
                        }
                }

                //return $ilias->ini->readVariable("server","webspace_dir");
        }

        function getDataDir()
        {
                return CLIENT_DATA_DIR;
                //global $ilias;

                //return $ilias->ini->readVariable("server", "data_dir");
        }

        function makeDir($a_dir)
        {
                $a_dir = trim($a_dir);

                // remove trailing slash (bugfix for php 4.2.x)
                if (substr($a_dir,-1) == "/")
                {
                        $a_dir = substr($a_dir,0,-1);
                }

                // check if a_dir comes with a path
                if (!($path = substr($a_dir,0, strrpos($a_dir,"/") - strlen($a_dir))))
                {
                        $path = ".";
                }

                // create directory with file permissions of parent directory
                umask(0000);
                return @mkdir($a_dir,fileperms($path));
        }


        function makeDirParents($a_dir)
        {
                $dirs = array($a_dir);
                $a_dir = dirname($a_dir);
                $last_dirname = '';
                while($last_dirname != $a_dir)
                {
                        array_unshift($dirs, $a_dir);
                        $last_dirname = $a_dir;
                        $a_dir = dirname($a_dir);
                }

                // find the first existing dir
                $reverse_paths = array_reverse($dirs, TRUE);
                $found_index = -1;
                foreach ($reverse_paths as $key => $value)
                {
                        if ($found_index == -1)
                        {
                                if (is_dir($value))
                                {
                                        $found_index = $key;
                                }
                        }
                }

                umask(0000);
                foreach ($dirs as $dirindex => $dir)
                {
                        // starting with the longest existing path
                        if ($dirindex >= $found_index)
                        {
                                if (! file_exists($dir))
                                {
                                        if (strcmp(substr($dir,strlen($dir)-1,1),"/") == 0)
                                        {
                                                // on some systems there is an error when there is a slash
                                                // at the end of a directory in mkdir, see Mantis #2554
                                                $dir = substr($dir,0,strlen($dir)-1);
                                        }
                                        
                                        if (! mkdir($dir, $umask))
                                        {
                                                error_log("Can't make directory: $dir");
                                                return false;
                                        }
                                }
                                elseif (! is_dir($dir))
                                {
                                        error_log("$dir is not a directory");
                                        return false;
                                }
                                else
                                {
                                        // get umask of the last existing parent directory
                                        $umask = fileperms($dir);
                                }
                        }
                }
                return true;
        }

        function delDir($a_dir)
        {
                if (!is_dir($a_dir) || is_int(strpos($a_dir, "..")))
                {
                        return;
                }

                $current_dir = opendir($a_dir);

                $files = array();

                // this extra loop has been necessary because of a strange bug
                // at least on MacOS X. A looped readdir() didn't work
                // correctly with larger directories
                // when an unlink happened inside the loop. Getting all files
                // into the memory first solved the problem.
                while($entryname = readdir($current_dir))
                {
                        $files[] = $entryname;
                }

                foreach($files as $file)
                {
                        if(is_dir($a_dir."/".$file) and ($file != "." and $file!=".."))
                        {
                                ilUtil::delDir(${a_dir}."/".${file});
                        }
                        elseif ($file != "." and $file != "..")
                        {
                                unlink(${a_dir}."/".${file});
                        }
                }

                closedir($current_dir);
                rmdir(${a_dir});
        }


        function getDir($a_dir)
        {
                $current_dir = opendir($a_dir);

                $dirs = array();
                $files = array();
                while($entry = readdir($current_dir))
                {
                        if(is_dir($a_dir."/".$entry))
                        {
                                $dirs[$entry] = array("type" => "dir", "entry" => $entry);
                        }
                        else
                        {
                                $size = filesize($a_dir."/".$entry);
                                $files[$entry] = array("type" => "file", "entry" => $entry,
                                "size" => $size);
                        }
                }
                ksort($dirs);
                ksort($files);

                return array_merge($dirs, $files);
        }




} // END class.ilUtil


?>