source: sourcecode/application/libraries/PHPExcel/Shared/XMLWriter.php @ 1

<?php
/**
 * PHPExcel
 *
 * Copyright (c) 2006 - 2014 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 - 2014 PHPExcel (http://www.codeplex.com/PHPExcel)
 * @license     http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt   LGPL
 * @version     1.8.0, 2014-03-02
 */

if (!defined('DATE_W3C')) {
  define('DATE_W3C', 'Y-m-d\TH:i:sP');
}

if (!defined('DEBUGMODE_ENABLED')) {
  define('DEBUGMODE_ENABLED', false);
}


/**
 * PHPExcel_Shared_XMLWriter
 *
 * @category   PHPExcel
 * @package     PHPExcel_Shared
 * @copyright  Copyright (c) 2006 - 2014 PHPExcel (http://www.codeplex.com/PHPExcel)
 */
class PHPExcel_Shared_XMLWriter extends XMLWriter {
        /** Temporary storage method */
        const STORAGE_MEMORY    = 1;
        const STORAGE_DISK              = 2;

        /**
         * Temporary filename
         *
         * @var string
         */
        private $_tempFileName = '';

        /**
         * Create a new PHPExcel_Shared_XMLWriter instance
         *
         * @param int           $pTemporaryStorage                      Temporary storage location
         * @param string        $pTemporaryStorageFolder        Temporary storage folder
         */
        public function __construct($pTemporaryStorage = self::STORAGE_MEMORY, $pTemporaryStorageFolder = NULL) {
                // Open temporary storage
                if ($pTemporaryStorage == self::STORAGE_MEMORY) {
                        $this->openMemory();
                } else {
                        // Create temporary filename
                        if ($pTemporaryStorageFolder === NULL)
                                $pTemporaryStorageFolder = PHPExcel_Shared_File::sys_get_temp_dir();
                        $this->_tempFileName = @tempnam($pTemporaryStorageFolder, 'xml');

                        // Open storage
                        if ($this->openUri($this->_tempFileName) === false) {
                                // Fallback to memory...
                                $this->openMemory();
                        }
                }

                // Set default values
                if (DEBUGMODE_ENABLED) {
                        $this->setIndent(true);
                }
        }

        /**
         * Destructor
         */
        public function __destruct() {
                // Unlink temporary files
                if ($this->_tempFileName != '') {
                        @unlink($this->_tempFileName);
                }
        }

        /**
         * Get written data
         *
         * @return $data
         */
        public function getData() {
                if ($this->_tempFileName == '') {
                        return $this->outputMemory(true);
                } else {
                        $this->flush();
                        return file_get_contents($this->_tempFileName);
                }
        }

        /**
         * Fallback method for writeRaw, introduced in PHP 5.2
         *
         * @param string $text
         * @return string
         */
        public function writeRawData($text)
        {
                if (is_array($text)) {
                        $text = implode("\n",$text);
                }

                if (method_exists($this, 'writeRaw')) {
                        return $this->writeRaw(htmlspecialchars($text));
                }

                return $this->text($text);
        }
}