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Viewing changes to libraries/PHPExcel/PHPExcel/Shared/File.php

  • Committer: Bazaar Package Importer
  • Author(s): Michal Čihař
  • Date: 2010-03-08 15:25:00 UTC
  • mfrom: (1.2.8 upstream)
  • Revision ID: james.westby@ubuntu.com-20100308152500-6e8hmuqc5co39de5
Tags: 4:3.3.0-1
* New upstream version.
* Rediff debian/patches.
* Fix permissions on mediawiki export extension.

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libraries/PHPExcel/PHPExcel/Shared/File.php
 
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<?php
 
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/**
 
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 * PHPExcel
 
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 *
 
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 * Copyright (c) 2006 - 2009 PHPExcel
 
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 *
 
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 * This library is free software; you can redistribute it and/or
 
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 * modify it under the terms of the GNU Lesser General Public
 
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 * License as published by the Free Software Foundation; either
 
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 * version 2.1 of the License, or (at your option) any later version.
 
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 *
 
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 * This library 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 GNU
 
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 * Lesser General Public License for more details.
 
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 *
 
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 * You should have received a copy of the GNU Lesser General Public
 
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 * License along with this library; if not, write to the Free Software
 
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 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
 
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 *
 
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 * @category   PHPExcel
 
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 * @package    PHPExcel_Shared
 
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 * @copyright  Copyright (c) 2006 - 2009 PHPExcel (http://www.codeplex.com/PHPExcel)
 
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 * @license    http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt    LGPL
 
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 * @version    1.7.0, 2009-08-10
 
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 */
 
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/**
 
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 * PHPExcel_Shared_File
 
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 *
 
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 * @category   PHPExcel
 
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 * @package    PHPExcel_Shared
 
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 * @copyright  Copyright (c) 2006 - 2009 PHPExcel (http://www.codeplex.com/PHPExcel)
 
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 */
 
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class PHPExcel_Shared_File
 
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{
 
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        /**
 
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          * Verify if a file exists
 
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          *
 
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          * @param      string  $pFilename      Filename
 
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          * @return bool
 
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          */
 
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        public static function file_exists($pFilename) {
 
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                // Sick construction, but it seems that
 
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                // file_exists returns strange values when
 
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                // doing the original file_exists on ZIP archives...
 
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                if ( strtolower(substr($pFilename, 0, 3)) == 'zip' ) {
 
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                        // Open ZIP file and verify if the file exists
 
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                        $zipFile                = substr($pFilename, 6, strpos($pFilename, '#') - 6);
 
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                        $archiveFile    = substr($pFilename, strpos($pFilename, '#') + 1);
 
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                        $zip = new ZipArchive();
 
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                        if ($zip->open($zipFile) === true) {
 
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                                $returnValue = ($zip->getFromName($archiveFile) !== false);
 
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                                $zip->close();
 
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                                return $returnValue;
 
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                        } else {
 
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                                return false;
 
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                        }
 
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                } else {
 
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                        // Regular file_exists
 
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                        return file_exists($pFilename);
 
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                }
 
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        }
 
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        /**
 
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         * Returns canonicalized absolute pathname, also for ZIP archives
 
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         *
 
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         * @param string $pFilename
 
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         * @return string
 
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         */
 
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        public static function realpath($pFilename) {
 
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                // Returnvalue
 
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                $returnValue = '';
 
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                // Try using realpath()
 
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                $returnValue = realpath($pFilename);
 
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                // Found something?
 
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                if ($returnValue == '' || is_null($returnValue)) {
 
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                        $pathArray = split('/' , $pFilename);
 
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                        while(in_array('..', $pathArray) && $pathArray[0] != '..') {
 
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                                for ($i = 0; $i < count($pathArray); ++$i) {
 
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                                        if ($pathArray[$i] == '..' && $i > 0) {
 
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                                                unset($pathArray[$i]);
 
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                                                unset($pathArray[$i - 1]);
 
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                                                break;
 
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                                        }
 
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                                }
 
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                        }
 
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                        $returnValue = implode('/', $pathArray);
 
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                }
 
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                // Return
 
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                return $returnValue;
 
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        }
 
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}