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<?php /** * PHPExcel_Reader_Abstract * * Copyright (c) 2006 - 2015 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_Reader * @copyright Copyright (c) 2006 - 2015 PHPExcel (http://www.codeplex.com/PHPExcel) * @license http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt LGPL * @version ##VERSION##, ##DATE## */ abstract class PHPExcel_Reader_Abstract implements PHPExcel_Reader_IReader { /** * Read data only? * Identifies whether the Reader should only read data values for cells, and ignore any formatting information; * or whether it should read both data and formatting * * @var boolean */ protected $readDataOnly = false; /** * Read empty cells? * Identifies whether the Reader should read data values for cells all cells, or should ignore cells containing * null value or empty string * * @var boolean */ protected $readEmptyCells = true; /** * Read charts that are defined in the workbook? * Identifies whether the Reader should read the definitions for any charts that exist in the workbook; * * @var boolean */ protected $includeCharts = false; /** * Restrict which sheets should be loaded? * This property holds an array of worksheet names to be loaded. If null, then all worksheets will be loaded. * * @var array of string */ protected $loadSheetsOnly; /** * PHPExcel_Reader_IReadFilter instance * * @var PHPExcel_Reader_IReadFilter */ protected $readFilter; protected $fileHandle = null; /** * Read data only? * If this is true, then the Reader will only read data values for cells, it will not read any formatting information. * If false (the default) it will read data and formatting. * * @return boolean */ public function getReadDataOnly() { return $this->readDataOnly; } /** * Set read data only * Set to true, to advise the Reader only to read data values for cells, and to ignore any formatting information. * Set to false (the default) to advise the Reader to read both data and formatting for cells. * * @param boolean $pValue * * @return PHPExcel_Reader_IReader */ public function setReadDataOnly($pValue = false) { $this->readDataOnly = $pValue; return $this; } /** * Read empty cells? * If this is true (the default), then the Reader will read data values for all cells, irrespective of value. * If false it will not read data for cells containing a null value or an empty string. * * @return boolean */ public function getReadEmptyCells() { return $this->readEmptyCells; } /** * Set read empty cells * Set to true (the default) to advise the Reader read data values for all cells, irrespective of value. * Set to false to advise the Reader to ignore cells containing a null value or an empty string. * * @param boolean $pValue * * @return PHPExcel_Reader_IReader */ public function setReadEmptyCells($pValue = true) { $this->readEmptyCells = $pValue; return $this; } /** * Read charts in workbook? * If this is true, then the Reader will include any charts that exist in the workbook. * Note that a ReadDataOnly value of false overrides, and charts won't be read regardless of the IncludeCharts value. * If false (the default) it will ignore any charts defined in the workbook file. * * @return boolean */ public function getIncludeCharts() { return $this->includeCharts; } /** * Set read charts in workbook * Set to true, to advise the Reader to include any charts that exist in the workbook. * Note that a ReadDataOnly value of false overrides, and charts won't be read regardless of the IncludeCharts value. * Set to false (the default) to discard charts. * * @param boolean $pValue * * @return PHPExcel_Reader_IReader */ public function setIncludeCharts($pValue = false) { $this->includeCharts = (boolean) $pValue; return $this; } /** * Get which sheets to load * Returns either an array of worksheet names (the list of worksheets that should be loaded), or a null * indicating that all worksheets in the workbook should be loaded. * * @return mixed */ public function getLoadSheetsOnly() { return $this->loadSheetsOnly; } /** * Set which sheets to load * * @param mixed $value * This should be either an array of worksheet names to be loaded, or a string containing a single worksheet name. * If NULL, then it tells the Reader to read all worksheets in the workbook * * @return PHPExcel_Reader_IReader */ public function setLoadSheetsOnly($value = null) { if ($value === null) { return $this->setLoadAllSheets(); } $this->loadSheetsOnly = is_array($value) ? $value : array($value); return $this; } /** * Set all sheets to load * Tells the Reader to load all worksheets from the workbook. * * @return PHPExcel_Reader_IReader */ public function setLoadAllSheets() { $this->loadSheetsOnly = null; return $this; } /** * Read filter * * @return PHPExcel_Reader_IReadFilter */ public function getReadFilter() { return $this->readFilter; } /** * Set read filter * * @param PHPExcel_Reader_IReadFilter $pValue * @return PHPExcel_Reader_IReader */ public function setReadFilter(PHPExcel_Reader_IReadFilter $pValue) { $this->readFilter = $pValue; return $this; } /** * Open file for reading * * @param string $pFilename * @throws PHPExcel_Reader_Exception * @return resource */ protected function openFile($pFilename) { // Check if file exists if (!file_exists($pFilename) || !is_readable($pFilename)) { throw new PHPExcel_Reader_Exception("Could not open " . $pFilename . " for reading! File does not exist."); } // Open file $this->fileHandle = fopen($pFilename, 'r'); if ($this->fileHandle === false) { throw new PHPExcel_Reader_Exception("Could not open file " . $pFilename . " for reading."); } } /** * Can the current PHPExcel_Reader_IReader read the file? * * @param string $pFilename * @return boolean * @throws PHPExcel_Reader_Exception */ public function canRead($pFilename) { // Check if file exists try { $this->openFile($pFilename); } catch (Exception $e) { return false; } $readable = $this->isValidFormat(); fclose($this->fileHandle); return $readable; } /** * Scan theXML for use of <!ENTITY to prevent XXE/XEE attacks * * @param string $xml * @throws PHPExcel_Reader_Exception */ public function securityScan($xml) { $pattern = '/\\0?' . implode('\\0?', str_split('<!DOCTYPE')) . '\\0?/'; if (preg_match($pattern, $xml)) { throw new PHPExcel_Reader_Exception('Detected use of ENTITY in XML, spreadsheet file load() aborted to prevent XXE/XEE attacks'); } return $xml; } /** * Scan theXML for use of <!ENTITY to prevent XXE/XEE attacks * * @param string $filestream * @throws PHPExcel_Reader_Exception */ public function securityScanFile($filestream) { return $this->securityScan(file_get_contents($filestream)); } }
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