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<?php namespace PhpOffice\PhpSpreadsheet\Reader; use PhpOffice\PhpSpreadsheet\Shared\File; /** * Copyright (c) 2006 - 2016 PhpSpreadsheet. * * 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 PhpSpreadsheet * * @copyright Copyright (c) 2006 - 2016 PhpSpreadsheet (https://github.com/PHPOffice/PhpSpreadsheet) * @license http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt LGPL / abstract class BaseReader implements 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 bool / 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 bool / 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 bool / 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; /* * IReadFilter instance. * * @var 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 bool / 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 bool $pValue * * @return IReader / public function setReadDataOnly($pValue) { $this->readDataOnly = (bool) $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 bool / 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 bool $pValue * * @return IReader / public function setReadEmptyCells($pValue) { $this->readEmptyCells = (bool) $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 bool / 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 bool $pValue * * @return IReader / public function setIncludeCharts($pValue) { $this->includeCharts = (bool) $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 $value * This should be either an array of worksheet names to be loaded, or a string containing a single worksheet name. * If NULL, then it tells the Reader to read all worksheets in the workbook * * @return IReader / public function setLoadSheetsOnly($value) { if ($value === null) { return $this->setLoadAllSheets(); } $this->loadSheetsOnly = is_array($value) ? $value : [$value]; return $this; } /* * Set all sheets to load * Tells the Reader to load all worksheets from the workbook. * * @return IReader / public function setLoadAllSheets() { $this->loadSheetsOnly = null; return $this; } /* * Read filter. * * @return IReadFilter / public function getReadFilter() { return $this->readFilter; } /* * Set read filter. * * @param IReadFilter $pValue * * @return IReader / public function setReadFilter(IReadFilter $pValue) { $this->readFilter = $pValue; return $this; } /* * Open file for reading. * * @param string $pFilename * * @throws Exception * * @return resource / protected function openFile($pFilename) { File::assertFile($pFilename); // Open file $this->fileHandle = fopen($pFilename, 'r'); if ($this->fileHandle === false) { throw new Exception('Could not open file ' . $pFilename . ' for reading.'); } } /* * Scan theXML for use of <!ENTITY to prevent XXE/XEE attacks. * * @param string $xml * * @throws Exception / public function securityScan($xml) { $pattern = '/\\0?' . implode('\\0?', str_split('<!DOCTYPE')) . '\\0?/'; if (preg_match($pattern, $xml)) { throw new 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 $filestream * * @throws Exception */ public function securityScanFile($filestream) { return $this->securityScan(file_get_contents($filestream)); } }

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