PHPExcel_Shared

# Source for file File.php Documentation is available at File.php <?php /** * PHPExcel * * Copyright (c) 2006 - 2011 PHPExcel * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * This library 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 * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA * * @category PHPExcel * @package PHPExcel_Shared * @copyright Copyright (c) 2006 - 2011 PHPExcel (http://www.codeplex.com/PHPExcel) * @license http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt LGPL * @version 1.7.6, 2011-02-27 */ /** * PHPExcel_Shared_File * * @category PHPExcel * @package PHPExcel_Shared * @copyright Copyright (c) 2006 - 2011 PHPExcel (http://www.codeplex.com/PHPExcel) */ class PHPExcel_Shared_File { /** * Verify if a file exists * * @param string $pFilename Filename * @return bool */ public static function file_exists($pFilename) { // Sick construction, but it seems that // file_exists returns strange values when // doing the original file_exists on ZIP archives... if ( strtolower(substr($pFilename, 0, 3)) == 'zip' ) { // Open ZIP file and verify if the file exists $zipFile = substr($pFilename, 6, strpos($pFilename, '#') - 6); $archiveFile = substr($pFilename, strpos($pFilename, '#') + 1); $zip = new ZipArchive(); if ($zip->open($zipFile) === true) { $returnValue = ($zip->getFromName($archiveFile) !== false); $zip->close(); return $returnValue; } else { return false; } } else { // Regular file_exists return file_exists($pFilename); } } /** * Returns canonicalized absolute pathname, also for ZIP archives * * @param string $pFilename * @return string */ public static function realpath($pFilename) { // Returnvalue $returnValue = ''; // Try using realpath() if (file_exists($pFilename)) { $returnValue = realpath($pFilename); } // Found something? if ($returnValue == '' || is_null($returnValue)) { $pathArray = explode('/' , $pFilename); while(in_array('..', $pathArray) && $pathArray[0] != '..') { for ($i = 0; $i < count($pathArray); ++$i) { if ($pathArray[$i] == '..' && $i > 0) { unset($pathArray[$i]); unset($pathArray[$i - 1]); break; } } } $returnValue = implode('/', $pathArray); } // Return return $returnValue; } /** * Get the systems temporary directory. * * @return string */ public static function sys_get_temp_dir() { // sys_get_temp_dir is only available since PHP 5.2.1 // http://php.net/manual/en/function.sys-get-temp-dir.php#94119 if ( !function_exists('sys_get_temp_dir')) { if ($temp = getenv('TMP') ) { if (file_exists($temp)) { return realpath($temp); } } if ($temp = getenv('TEMP') ) { if (file_exists($temp)) { return realpath($temp); } } if ($temp = getenv('TMPDIR') ) { if (file_exists($temp)) { return realpath($temp); } } // trick for creating a file in system's temporary dir // without knowing the path of the system's temporary dir $temp = tempnam(__FILE__, ''); if (file_exists($temp)) { unlink($temp); return realpath(dirname($temp)); } return null; } // use ordinary built-in PHP function // There should be no problem with the 5.2.4 Suhosin realpath() bug, because this line should only // be called if we're running 5.2.1 or earlier return realpath(sys_get_temp_dir()); } } Documentation generated on Sun, 27 Feb 2011 16:31:30 -0800 by phpDocumentor 1.4.3