<?php

namespace LWVendor\PhpOffice\PhpSpreadsheet\Reader;

use LWVendor\PhpOffice\PhpSpreadsheet\Exception as PhpSpreadsheetException;
use LWVendor\PhpOffice\PhpSpreadsheet\Reader\Exception as ReaderException;
use LWVendor\PhpOffice\PhpSpreadsheet\Reader\Security\XmlScanner;
use LWVendor\PhpOffice\PhpSpreadsheet\Shared\File;
use LWVendor\PhpOffice\PhpSpreadsheet\Spreadsheet;
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 null|string[]
     */
    protected $loadSheetsOnly;
    /**
     * IReadFilter instance.
     *
     * @var IReadFilter
     */
    protected $readFilter;
    /** @var resource */
    protected $fileHandle;
    /**
     * @var ?XmlScanner
     */
    protected $securityScanner;
    public function __construct()
    {
        $this->readFilter = new DefaultReadFilter();
    }
    public function getReadDataOnly()
    {
        return $this->readDataOnly;
    }
    public function setReadDataOnly($readCellValuesOnly)
    {
        $this->readDataOnly = (bool) $readCellValuesOnly;
        return $this;
    }
    public function getReadEmptyCells()
    {
        return $this->readEmptyCells;
    }
    public function setReadEmptyCells($readEmptyCells)
    {
        $this->readEmptyCells = (bool) $readEmptyCells;
        return $this;
    }
    public function getIncludeCharts()
    {
        return $this->includeCharts;
    }
    public function setIncludeCharts($includeCharts)
    {
        $this->includeCharts = (bool) $includeCharts;
        return $this;
    }
    public function getLoadSheetsOnly()
    {
        return $this->loadSheetsOnly;
    }
    public function setLoadSheetsOnly($sheetList)
    {
        if ($sheetList === null) {
            return $this->setLoadAllSheets();
        }
        $this->loadSheetsOnly = \is_array($sheetList) ? $sheetList : [$sheetList];
        return $this;
    }
    public function setLoadAllSheets()
    {
        $this->loadSheetsOnly = null;
        return $this;
    }
    public function getReadFilter()
    {
        return $this->readFilter;
    }
    public function setReadFilter(IReadFilter $readFilter)
    {
        $this->readFilter = $readFilter;
        return $this;
    }
    public function getSecurityScanner() : ?XmlScanner
    {
        return $this->securityScanner;
    }
    public function getSecurityScannerOrThrow() : XmlScanner
    {
        if ($this->securityScanner === null) {
            throw new ReaderException('Security scanner is unexpectedly null');
        }
        return $this->securityScanner;
    }
    protected function processFlags(int $flags) : void
    {
        if ((bool) ($flags & self::LOAD_WITH_CHARTS) === \true) {
            $this->setIncludeCharts(\true);
        }
        if ((bool) ($flags & self::READ_DATA_ONLY) === \true) {
            $this->setReadDataOnly(\true);
        }
        if (((bool) ($flags & self::SKIP_EMPTY_CELLS) || (bool) ($flags & self::IGNORE_EMPTY_CELLS)) === \true) {
            $this->setReadEmptyCells(\false);
        }
    }
    protected function loadSpreadsheetFromFile(string $filename) : Spreadsheet
    {
        throw new PhpSpreadsheetException('Reader classes must implement their own loadSpreadsheetFromFile() method');
    }
    /**
     * Loads Spreadsheet from file.
     *
     * @param int $flags the optional second parameter flags may be used to identify specific elements
     *                       that should be loaded, but which won't be loaded by default, using these values:
     *                            IReader::LOAD_WITH_CHARTS - Include any charts that are defined in the loaded file
     */
    public function load(string $filename, int $flags = 0) : Spreadsheet
    {
        $this->processFlags($flags);
        try {
            return $this->loadSpreadsheetFromFile($filename);
        } catch (ReaderException $e) {
            throw $e;
        }
    }
    /**
     * Open file for reading.
     */
    protected function openFile(string $filename) : void
    {
        $fileHandle = \false;
        if ($filename) {
            File::assertFile($filename);
            // Open file
            $fileHandle = \fopen($filename, 'rb');
        }
        if ($fileHandle === \false) {
            throw new ReaderException('Could not open file ' . $filename . ' for reading.');
        }
        $this->fileHandle = $fileHandle;
    }
}