<?php

namespace PhpOffice\PhpSpreadsheet\Reader;


> use DateTime;
use PhpOffice\PhpSpreadsheet\Cell\Coordinate;
> use DateTimeZone;
use PhpOffice\PhpSpreadsheet\Cell\DataType;
> use PhpOffice\PhpSpreadsheet\Cell\AddressHelper;



< use PhpOffice\PhpSpreadsheet\Document\Properties;



> use PhpOffice\PhpSpreadsheet\DefinedName;


use PhpOffice\PhpSpreadsheet\Reader\Security\XmlScanner;

> use PhpOffice\PhpSpreadsheet\Reader\Xml\PageSettings;
use PhpOffice\PhpSpreadsheet\RichText\RichText;
> use PhpOffice\PhpSpreadsheet\Reader\Xml\Properties;
use PhpOffice\PhpSpreadsheet\Settings;
> use PhpOffice\PhpSpreadsheet\Reader\Xml\Style;


use PhpOffice\PhpSpreadsheet\Shared\Date;
use PhpOffice\PhpSpreadsheet\Shared\File;
use PhpOffice\PhpSpreadsheet\Shared\StringHelper;
use PhpOffice\PhpSpreadsheet\Spreadsheet;

< use PhpOffice\PhpSpreadsheet\Style\Alignment;
< use PhpOffice\PhpSpreadsheet\Style\Border;
< use PhpOffice\PhpSpreadsheet\Style\Font;


use SimpleXMLElement;

/**
 * Reader for SpreadsheetML, the XML schema for Microsoft Office Excel 2003.
 */
class Xml extends BaseReader
{
    /**
     * Formats.
     *
     * @var array
     */
    protected $styles = [];

    /**

<      * Character set used in the file.
<      *
<      * @var string
<      */
<     protected $charSet = 'UTF-8';
< 
<     /**


     * Create a new Excel2003XML Reader instance.
     */
    public function __construct()
    {
        parent::__construct();
        $this->securityScanner = XmlScanner::getInstance($this);
    }


>     private $fileContents = '';
    /**
> 
     * Can the current IReader read the file?
>     public static function xmlMappings(): array
     *
>     {
     * @param string $pFilename
>         return array_merge(
     *
>             Style\Fill::FILL_MAPPINGS,
     * @throws Exception
>             Style\Border::BORDER_MAPPINGS
     *
>         );
     * @return bool
>     }
     */
> 



<      *
<      * @param string $pFilename
<      *
<      * @throws Exception
<      *
<      * @return bool



<     public function canRead($pFilename)



>     public function canRead(string $filename): bool


        //    XML data type            xmlns:dt="uuid:C2F41010-65B3-11d1-A29F-00AA00C14882"
        //    MS-persist recordset    xmlns:rs="urn:schemas-microsoft-com:rowset"
        //    Rowset                    xmlns:z="#RowsetSchema"
        //

        $signature = [
            '<?xml version="1.0"',

<             '<?mso-application progid="Excel.Sheet"?>',



>             'xmlns:ss="urn:schemas-microsoft-com:office:spreadsheet',


        ];

        // Open file

<         $this->openFile($pFilename);
<         $fileHandle = $this->fileHandle;



>         $data = file_get_contents($filename);




<         // Read sample data (first 2 KB will do)
<         $data = fread($fileHandle, 2048);
<         fclose($fileHandle);
<         $data = str_replace("'", '"', $data); // fix headers with single quote



>         // Why?
>         //$data = str_replace("'", '"', $data); // fix headers with single quote



        $valid = true;
        foreach ($signature as $match) {
            // every part of the signature must be present
            if (strpos($data, $match) === false) {
                $valid = false;

                break;
            }
        }

        //    Retrieve charset encoding

<         if (preg_match('/<?xml.*encoding=[\'"](.*?)[\'"].*?>/um', $data, $matches)) {
<             $this->charSet = strtoupper($matches[1]);



>         if (preg_match('/<?xml.*encoding=[\'"](.*?)[\'"].*?>/m', $data, $matches)) {
>             $charSet = strtoupper($matches[1]);
>             if (1 == preg_match('/^ISO-8859-\d[\dL]?$/i', $charSet)) {
>                 $data = StringHelper::convertEncoding($data, 'UTF-8', $charSet);
>                 $data = preg_replace('/(<?xml.*encoding=[\'"]).*?([\'"].*?>)/um', '$1' . 'UTF-8' . '$2', $data, 1);
>             }


        }

>         $this->fileContents = $data;



        return $valid;
    }

    /**
     * Check if the file is a valid SimpleXML.
     *

<      * @param string $pFilename
<      *
<      * @throws Exception



>      * @param string $filename


     *

<      * @return false|\SimpleXMLElement



>      * @return false|SimpleXMLElement


     */

<     public function trySimpleXMLLoadString($pFilename)



>     public function trySimpleXMLLoadString($filename)


    {
        try {
            $xml = simplexml_load_string(

<                 $this->securityScanner->scan(file_get_contents($pFilename)),



>                 $this->securityScanner->scan($this->fileContents ?: file_get_contents($filename)),


                'SimpleXMLElement',
                Settings::getLibXmlLoaderOptions()
            );
        } catch (\Exception $e) {

<             throw new Exception('Cannot load invalid XML file: ' . $pFilename, 0, $e);



>             throw new Exception('Cannot load invalid XML file: ' . $filename, 0, $e);


        }

>         $this->fileContents = '';



        return $xml;
    }

    /**
     * Reads names of the worksheets from a file, without parsing the whole file to a Spreadsheet object.
     *

<      * @param string $pFilename
<      *
<      * @throws Exception



>      * @param string $filename


     *
     * @return array
     */

<     public function listWorksheetNames($pFilename)



>     public function listWorksheetNames($filename)


    {

<         File::assertFile($pFilename);
<         if (!$this->canRead($pFilename)) {
<             throw new Exception($pFilename . ' is an Invalid Spreadsheet file.');



>         File::assertFile($filename);
>         if (!$this->canRead($filename)) {
>             throw new Exception($filename . ' is an Invalid Spreadsheet file.');


        }

        $worksheetNames = [];


<         $xml = $this->trySimpleXMLLoadString($pFilename);



>         $xml = $this->trySimpleXMLLoadString($filename);
>         if ($xml === false) {
>             throw new Exception("Problem reading {$filename}");
>         }



        $namespaces = $xml->getNamespaces(true);

        $xml_ss = $xml->children($namespaces['ss']);
        foreach ($xml_ss->Worksheet as $worksheet) {

<             $worksheet_ss = $worksheet->attributes($namespaces['ss']);
<             $worksheetNames[] = self::convertStringEncoding((string) $worksheet_ss['Name'], $this->charSet);



>             $worksheet_ss = self::getAttributes($worksheet, $namespaces['ss']);
>             $worksheetNames[] = (string) $worksheet_ss['Name'];


        }

        return $worksheetNames;
    }

    /**
     * Return worksheet info (Name, Last Column Letter, Last Column Index, Total Rows, Total Columns).
     *

<      * @param string $pFilename
<      *
<      * @throws Exception



>      * @param string $filename


     *
     * @return array
     */

<     public function listWorksheetInfo($pFilename)



>     public function listWorksheetInfo($filename)


    {

<         File::assertFile($pFilename);



>         File::assertFile($filename);
>         if (!$this->canRead($filename)) {
>             throw new Exception($filename . ' is an Invalid Spreadsheet file.');
>         }



        $worksheetInfo = [];


<         $xml = $this->trySimpleXMLLoadString($pFilename);



>         $xml = $this->trySimpleXMLLoadString($filename);
>         if ($xml === false) {
>             throw new Exception("Problem reading {$filename}");
>         }



        $namespaces = $xml->getNamespaces(true);

        $worksheetID = 1;
        $xml_ss = $xml->children($namespaces['ss']);
        foreach ($xml_ss->Worksheet as $worksheet) {

<             $worksheet_ss = $worksheet->attributes($namespaces['ss']);



>             $worksheet_ss = self::getAttributes($worksheet, $namespaces['ss']);



            $tmpInfo = [];
            $tmpInfo['worksheetName'] = '';
            $tmpInfo['lastColumnLetter'] = 'A';
            $tmpInfo['lastColumnIndex'] = 0;
            $tmpInfo['totalRows'] = 0;
            $tmpInfo['totalColumns'] = 0;


>             $tmpInfo['worksheetName'] = "Worksheet_{$worksheetID}";


            if (isset($worksheet_ss['Name'])) {
                $tmpInfo['worksheetName'] = (string) $worksheet_ss['Name'];

<             } else {
<                 $tmpInfo['worksheetName'] = "Worksheet_{$worksheetID}";


            }

            if (isset($worksheet->Table->Row)) {
                $rowIndex = 0;

                foreach ($worksheet->Table->Row as $rowData) {
                    $columnIndex = 0;
                    $rowHasData = false;

                    foreach ($rowData->Cell as $cell) {
                        if (isset($cell->Data)) {
                            $tmpInfo['lastColumnIndex'] = max($tmpInfo['lastColumnIndex'], $columnIndex);
                            $rowHasData = true;
                        }

                        ++$columnIndex;
                    }

                    ++$rowIndex;

                    if ($rowHasData) {
                        $tmpInfo['totalRows'] = max($tmpInfo['totalRows'], $rowIndex);
                    }
                }
            }

            $tmpInfo['lastColumnLetter'] = Coordinate::stringFromColumnIndex($tmpInfo['lastColumnIndex'] + 1);
            $tmpInfo['totalColumns'] = $tmpInfo['lastColumnIndex'] + 1;

            $worksheetInfo[] = $tmpInfo;
            ++$worksheetID;
        }

        return $worksheetInfo;
    }

    /**
     * Loads Spreadsheet from file.
     *

<      * @param string $pFilename
<      *
<      * @throws Exception
<      *


     * @return Spreadsheet
     */

<     public function load($pFilename)



>     public function load(string $filename, int $flags = 0)


    {

>         $this->processFlags($flags);
        // Create new Spreadsheet
> 


        $spreadsheet = new Spreadsheet();
        $spreadsheet->removeSheetByIndex(0);

        // Load into this instance

<         return $this->loadIntoExisting($pFilename, $spreadsheet);
<     }
< 
<     private static function identifyFixedStyleValue($styleList, &$styleAttributeValue)
<     {
<         $styleAttributeValue = strtolower($styleAttributeValue);
<         foreach ($styleList as $style) {
<             if ($styleAttributeValue == strtolower($style)) {
<                 $styleAttributeValue = $style;
< 
<                 return true;
<             }
<         }
< 
<         return false;
<     }
< 
<     /**
<      * pixel units to excel width units(units of 1/256th of a character width).
<      *
<      * @param float $pxs
<      *
<      * @return float
<      */
<     protected static function pixel2WidthUnits($pxs)
<     {
<         $UNIT_OFFSET_MAP = [0, 36, 73, 109, 146, 182, 219];
< 
<         $widthUnits = 256 * ($pxs / 7);
<         $widthUnits += $UNIT_OFFSET_MAP[($pxs % 7)];
< 
<         return $widthUnits;
<     }
< 
<     /**
<      * excel width units(units of 1/256th of a character width) to pixel units.
<      *
<      * @param float $widthUnits
<      *
<      * @return float
<      */
<     protected static function widthUnits2Pixel($widthUnits)
<     {
<         $pixels = ($widthUnits / 256) * 7;
<         $offsetWidthUnits = $widthUnits % 256;
< 
<         return $pixels + round($offsetWidthUnits / (256 / 7));
<     }
< 
<     protected static function hex2str($hex)
<     {
<         return chr(hexdec($hex[1]));



>         return $this->loadIntoExisting($filename, $spreadsheet);


    }

    /**
     * Loads from file into Spreadsheet instance.
     *

<      * @param string $pFilename
<      * @param Spreadsheet $spreadsheet
<      *
<      * @throws Exception



>      * @param string $filename


     *
     * @return Spreadsheet
     */

<     public function loadIntoExisting($pFilename, Spreadsheet $spreadsheet)



>     public function loadIntoExisting($filename, Spreadsheet $spreadsheet)


    {

<         File::assertFile($pFilename);
<         if (!$this->canRead($pFilename)) {
<             throw new Exception($pFilename . ' is an Invalid Spreadsheet file.');



>         File::assertFile($filename);
>         if (!$this->canRead($filename)) {
>             throw new Exception($filename . ' is an Invalid Spreadsheet file.');


        }


<         $xml = $this->trySimpleXMLLoadString($pFilename);
< 
<         $namespaces = $xml->getNamespaces(true);
< 
<         $docProps = $spreadsheet->getProperties();
<         if (isset($xml->DocumentProperties[0])) {
<             foreach ($xml->DocumentProperties[0] as $propertyName => $propertyValue) {
<                 switch ($propertyName) {
<                     case 'Title':
<                         $docProps->setTitle(self::convertStringEncoding($propertyValue, $this->charSet));
< 
<                         break;
<                     case 'Subject':
<                         $docProps->setSubject(self::convertStringEncoding($propertyValue, $this->charSet));
< 
<                         break;
<                     case 'Author':
<                         $docProps->setCreator(self::convertStringEncoding($propertyValue, $this->charSet));
< 
<                         break;
<                     case 'Created':
<                         $creationDate = strtotime($propertyValue);
<                         $docProps->setCreated($creationDate);
< 
<                         break;
<                     case 'LastAuthor':
<                         $docProps->setLastModifiedBy(self::convertStringEncoding($propertyValue, $this->charSet));
< 
<                         break;
<                     case 'LastSaved':
<                         $lastSaveDate = strtotime($propertyValue);
<                         $docProps->setModified($lastSaveDate);
< 
<                         break;
<                     case 'Company':
<                         $docProps->setCompany(self::convertStringEncoding($propertyValue, $this->charSet));
< 
<                         break;
<                     case 'Category':
<                         $docProps->setCategory(self::convertStringEncoding($propertyValue, $this->charSet));
< 
<                         break;
<                     case 'Manager':
<                         $docProps->setManager(self::convertStringEncoding($propertyValue, $this->charSet));
< 
<                         break;
<                     case 'Keywords':
<                         $docProps->setKeywords(self::convertStringEncoding($propertyValue, $this->charSet));
< 
<                         break;
<                     case 'Description':
<                         $docProps->setDescription(self::convertStringEncoding($propertyValue, $this->charSet));
< 
<                         break;



>         $xml = $this->trySimpleXMLLoadString($filename);
>         if ($xml === false) {
>             throw new Exception("Problem reading {$filename}");


                }

<             }
<         }
<         if (isset($xml->CustomDocumentProperties)) {
<             foreach ($xml->CustomDocumentProperties[0] as $propertyName => $propertyValue) {
<                 $propertyAttributes = $propertyValue->attributes($namespaces['dt']);
<                 $propertyName = preg_replace_callback('/_x([0-9a-z]{4})_/', ['self', 'hex2str'], $propertyName);
<                 $propertyType = Properties::PROPERTY_TYPE_UNKNOWN;
<                 switch ((string) $propertyAttributes) {
<                     case 'string':
<                         $propertyType = Properties::PROPERTY_TYPE_STRING;
<                         $propertyValue = trim($propertyValue);




<                         break;
<                     case 'boolean':
<                         $propertyType = Properties::PROPERTY_TYPE_BOOLEAN;
<                         $propertyValue = (bool) $propertyValue;



>         $namespaces = $xml->getNamespaces(true);




<                         break;
<                     case 'integer':
<                         $propertyType = Properties::PROPERTY_TYPE_INTEGER;
<                         $propertyValue = (int) $propertyValue;



>         (new Properties($spreadsheet))->readProperties($xml, $namespaces);




<                         break;
<                     case 'float':
<                         $propertyType = Properties::PROPERTY_TYPE_FLOAT;
<                         $propertyValue = (float) $propertyValue;
< 
<                         break;
<                     case 'dateTime.tz':
<                         $propertyType = Properties::PROPERTY_TYPE_DATE;
<                         $propertyValue = strtotime(trim($propertyValue));
< 
<                         break;
<                 }
<                 $docProps->setCustomProperty($propertyName, $propertyValue, $propertyType);
<             }
<         }
< 
<         $this->parseStyles($xml, $namespaces);



>         $this->styles = (new Style())->parseStyles($xml, $namespaces);



        $worksheetID = 0;
        $xml_ss = $xml->children($namespaces['ss']);


<         foreach ($xml_ss->Worksheet as $worksheet) {
<             $worksheet_ss = $worksheet->attributes($namespaces['ss']);
< 
<             if ((isset($this->loadSheetsOnly)) && (isset($worksheet_ss['Name'])) &&
<                 (!in_array($worksheet_ss['Name'], $this->loadSheetsOnly))) {



>         /** @var null|SimpleXMLElement $worksheetx */
>         foreach ($xml_ss->Worksheet as $worksheetx) {
>             $worksheet = $worksheetx ?? new SimpleXMLElement('<xml></xml>');
>             $worksheet_ss = self::getAttributes($worksheet, $namespaces['ss']);
> 
>             if (
>                 isset($this->loadSheetsOnly, $worksheet_ss['Name']) &&
>                 (!in_array($worksheet_ss['Name'], $this->loadSheetsOnly))
>             ) {


                continue;
            }

            // Create new Worksheet
            $spreadsheet->createSheet();
            $spreadsheet->setActiveSheetIndex($worksheetID);

>             $worksheetName = '';


            if (isset($worksheet_ss['Name'])) {

<                 $worksheetName = self::convertStringEncoding((string) $worksheet_ss['Name'], $this->charSet);



>                 $worksheetName = (string) $worksheet_ss['Name'];


                //    Use false for $updateFormulaCellReferences to prevent adjustment of worksheet references in
                //        formula cells... during the load, all formulae should be correct, and we're simply bringing
                //        the worksheet name in line with the formula, not the reverse
                $spreadsheet->getActiveSheet()->setTitle($worksheetName, false, false);
            }


>             // locally scoped defined names
            $columnID = 'A';
>             if (isset($worksheet->Names[0])) {
            if (isset($worksheet->Table->Column)) {
>                 foreach ($worksheet->Names[0] as $definedName) {
                foreach ($worksheet->Table->Column as $columnData) {
>                     $definedName_ss = self::getAttributes($definedName, $namespaces['ss']);
                    $columnData_ss = $columnData->attributes($namespaces['ss']);
>                     $name = (string) $definedName_ss['Name'];
                    if (isset($columnData_ss['Index'])) {
>                     $definedValue = (string) $definedName_ss['RefersTo'];
                        $columnID = Coordinate::stringFromColumnIndex((int) $columnData_ss['Index']);
>                     $convertedValue = AddressHelper::convertFormulaToA1($definedValue);
                    }
>                     if ($convertedValue[0] === '=') {
                    if (isset($columnData_ss['Width'])) {
>                         $convertedValue = substr($convertedValue, 1);
                        $columnWidth = $columnData_ss['Width'];
>                     }
                        $spreadsheet->getActiveSheet()->getColumnDimension($columnID)->setWidth($columnWidth / 5.4);
>                     $spreadsheet->addDefinedName(DefinedName::createInstance($name, $spreadsheet->getActiveSheet(), $convertedValue, true));
                    }
>                 }
                    ++$columnID;
>             }
                }
> 



<                     $columnData_ss = $columnData->attributes($namespaces['ss']);



>                     $columnData_ss = self::getAttributes($columnData, $namespaces['ss']);



            $rowID = 1;
            if (isset($worksheet->Table->Row)) {
                $additionalMergedCells = 0;
                foreach ($worksheet->Table->Row as $rowData) {
                    $rowHasData = false;

<                     $row_ss = $rowData->attributes($namespaces['ss']);



>                     $row_ss = self::getAttributes($rowData, $namespaces['ss']);


                    if (isset($row_ss['Index'])) {
                        $rowID = (int) $row_ss['Index'];
                    }

                    $columnID = 'A';
                    foreach ($rowData->Cell as $cell) {

<                         $cell_ss = $cell->attributes($namespaces['ss']);



>                         $cell_ss = self::getAttributes($cell, $namespaces['ss']);


                        if (isset($cell_ss['Index'])) {
                            $columnID = Coordinate::stringFromColumnIndex((int) $cell_ss['Index']);
                        }
                        $cellRange = $columnID . $rowID;

                        if ($this->getReadFilter() !== null) {
                            if (!$this->getReadFilter()->readCell($columnID, $rowID, $worksheetName)) {
                                ++$columnID;

                                continue;
                            }
                        }

                        if (isset($cell_ss['HRef'])) {

<                             $spreadsheet->getActiveSheet()->getCell($cellRange)->getHyperlink()->setUrl($cell_ss['HRef']);



>                             $spreadsheet->getActiveSheet()->getCell($cellRange)->getHyperlink()->setUrl((string) $cell_ss['HRef']);


                        }

                        if ((isset($cell_ss['MergeAcross'])) || (isset($cell_ss['MergeDown']))) {
                            $columnTo = $columnID;
                            if (isset($cell_ss['MergeAcross'])) {
                                $additionalMergedCells += (int) $cell_ss['MergeAcross'];

<                                 $columnTo = Coordinate::stringFromColumnIndex(Coordinate::columnIndexFromString($columnID) + $cell_ss['MergeAcross']);



>                                 $columnTo = Coordinate::stringFromColumnIndex((int) (Coordinate::columnIndexFromString($columnID) + $cell_ss['MergeAcross']));


                            }
                            $rowTo = $rowID;
                            if (isset($cell_ss['MergeDown'])) {
                                $rowTo = $rowTo + $cell_ss['MergeDown'];
                            }
                            $cellRange .= ':' . $columnTo . $rowTo;
                            $spreadsheet->getActiveSheet()->mergeCells($cellRange);
                        }


<                         $cellIsSet = $hasCalculatedValue = false;



>                         $hasCalculatedValue = false;


                        $cellDataFormula = '';
                        if (isset($cell_ss['Formula'])) {
                            $cellDataFormula = $cell_ss['Formula'];
                            $hasCalculatedValue = true;
                        }
                        if (isset($cell->Data)) {

<                             $cellValue = $cellData = $cell->Data;



>                             $cellData = $cell->Data;
>                             $cellValue = (string) $cellData;


                            $type = DataType::TYPE_NULL;

<                             $cellData_ss = $cellData->attributes($namespaces['ss']);



>                             $cellData_ss = self::getAttributes($cellData, $namespaces['ss']);


                            if (isset($cellData_ss['Type'])) {
                                $cellDataType = $cellData_ss['Type'];
                                switch ($cellDataType) {
                                    /*
                                    const TYPE_STRING        = 's';
                                    const TYPE_FORMULA        = 'f';
                                    const TYPE_NUMERIC        = 'n';
                                    const TYPE_BOOL            = 'b';
                                    const TYPE_NULL            = 'null';
                                    const TYPE_INLINE        = 'inlineStr';
                                    const TYPE_ERROR        = 'e';
                                    */
                                    case 'String':

<                                         $cellValue = self::convertStringEncoding($cellValue, $this->charSet);


                                        $type = DataType::TYPE_STRING;

                                        break;
                                    case 'Number':
                                        $type = DataType::TYPE_NUMERIC;
                                        $cellValue = (float) $cellValue;
                                        if (floor($cellValue) == $cellValue) {
                                            $cellValue = (int) $cellValue;
                                        }

                                        break;
                                    case 'Boolean':
                                        $type = DataType::TYPE_BOOL;
                                        $cellValue = ($cellValue != 0);

                                        break;
                                    case 'DateTime':
                                        $type = DataType::TYPE_NUMERIC;

<                                         $cellValue = Date::PHPToExcel(strtotime($cellValue));



>                                         $dateTime = new DateTime($cellValue, new DateTimeZone('UTC'));
>                                         $cellValue = Date::PHPToExcel($dateTime);



                                        break;
                                    case 'Error':
                                        $type = DataType::TYPE_ERROR;

>                                         $hasCalculatedValue = false;



                                        break;
                                }
                            }

                            if ($hasCalculatedValue) {
                                $type = DataType::TYPE_FORMULA;
                                $columnNumber = Coordinate::columnIndexFromString($columnID);

<                                 if (substr($cellDataFormula, 0, 3) == 'of:') {
<                                     $cellDataFormula = substr($cellDataFormula, 3);
<                                     $temp = explode('"', $cellDataFormula);
<                                     $key = false;
<                                     foreach ($temp as &$value) {
<                                         //    Only replace in alternate array entries (i.e. non-quoted blocks)
<                                         if ($key = !$key) {
<                                             $value = str_replace(['[.', '.', ']'], '', $value);
<                                         }
<                                     }
<                                 } else {
<                                     //    Convert R1C1 style references to A1 style references (but only when not quoted)
<                                     $temp = explode('"', $cellDataFormula);
<                                     $key = false;
<                                     foreach ($temp as &$value) {
<                                         //    Only replace in alternate array entries (i.e. non-quoted blocks)
<                                         if ($key = !$key) {
<                                             preg_match_all('/(R(\[?-?\d*\]?))(C(\[?-?\d*\]?))/', $value, $cellReferences, PREG_SET_ORDER + PREG_OFFSET_CAPTURE);
<                                             //    Reverse the matches array, otherwise all our offsets will become incorrect if we modify our way
<                                             //        through the formula from left to right. Reversing means that we work right to left.through
<                                             //        the formula
<                                             $cellReferences = array_reverse($cellReferences);
<                                             //    Loop through each R1C1 style reference in turn, converting it to its A1 style equivalent,
<                                             //        then modify the formula to use that new reference
<                                             foreach ($cellReferences as $cellReference) {
<                                                 $rowReference = $cellReference[2][0];
<                                                 //    Empty R reference is the current row
<                                                 if ($rowReference == '') {
<                                                     $rowReference = $rowID;
<                                                 }
<                                                 //    Bracketed R references are relative to the current row
<                                                 if ($rowReference[0] == '[') {
<                                                     $rowReference = $rowID + trim($rowReference, '[]');
<                                                 }
<                                                 $columnReference = $cellReference[4][0];
<                                                 //    Empty C reference is the current column
<                                                 if ($columnReference == '') {
<                                                     $columnReference = $columnNumber;
<                                                 }
<                                                 //    Bracketed C references are relative to the current column
<                                                 if ($columnReference[0] == '[') {
<                                                     $columnReference = $columnNumber + trim($columnReference, '[]');
<                                                 }
<                                                 $A1CellReference = Coordinate::stringFromColumnIndex($columnReference) . $rowReference;
<                                                 $value = substr_replace($value, $A1CellReference, $cellReference[0][1], strlen($cellReference[0][0]));
<                                             }
<                                         }
<                                     }
<                                 }
<                                 unset($value);
<                                 //    Then rebuild the formula string
<                                 $cellDataFormula = implode('"', $temp);



>                                 $cellDataFormula = AddressHelper::convertFormulaToA1($cellDataFormula, $rowID, $columnNumber);


                            }

                            $spreadsheet->getActiveSheet()->getCell($columnID . $rowID)->setValueExplicit((($hasCalculatedValue) ? $cellDataFormula : $cellValue), $type);
                            if ($hasCalculatedValue) {
                                $spreadsheet->getActiveSheet()->getCell($columnID . $rowID)->setCalculatedValue($cellValue);
                            }

<                             $cellIsSet = $rowHasData = true;



>                             $rowHasData = true;


                        }

                        if (isset($cell->Comment)) {

<                             $commentAttributes = $cell->Comment->attributes($namespaces['ss']);
<                             $author = 'unknown';
<                             if (isset($commentAttributes->Author)) {
<                                 $author = (string) $commentAttributes->Author;
<                             }
<                             $node = $cell->Comment->Data->asXML();
<                             $annotation = strip_tags($node);
<                             $spreadsheet->getActiveSheet()->getComment($columnID . $rowID)->setAuthor(self::convertStringEncoding($author, $this->charSet))->setText($this->parseRichText($annotation));



>                             $this->parseCellComment($cell->Comment, $namespaces, $spreadsheet, $columnID, $rowID);


                        }


<                         if (($cellIsSet) && (isset($cell_ss['StyleID']))) {



>                         if (isset($cell_ss['StyleID'])) {


                            $style = (string) $cell_ss['StyleID'];
                            if ((isset($this->styles[$style])) && (!empty($this->styles[$style]))) {

<                                 if (!$spreadsheet->getActiveSheet()->cellExists($columnID . $rowID)) {
<                                     $spreadsheet->getActiveSheet()->getCell($columnID . $rowID)->setValue(null);
<                                 }
<                                 $spreadsheet->getActiveSheet()->getStyle($cellRange)->applyFromArray($this->styles[$style]);



>                                 //if (!$spreadsheet->getActiveSheet()->cellExists($columnID . $rowID)) {
>                                 //    $spreadsheet->getActiveSheet()->getCell($columnID . $rowID)->setValue(null);
>                                 //}
>                                 $spreadsheet->getActiveSheet()->getStyle($cellRange)
>                                     ->applyFromArray($this->styles[$style]);


                            }
                        }
                        ++$columnID;
                        while ($additionalMergedCells > 0) {
                            ++$columnID;
                            --$additionalMergedCells;
                        }
                    }

                    if ($rowHasData) {
                        if (isset($row_ss['Height'])) {
                            $rowHeight = $row_ss['Height'];

<                             $spreadsheet->getActiveSheet()->getRowDimension($rowID)->setRowHeight($rowHeight);



>                             $spreadsheet->getActiveSheet()->getRowDimension($rowID)->setRowHeight((float) $rowHeight);


                        }
                    }

                    ++$rowID;
                }

<             }
<             ++$worksheetID;
<         }




<         // Return
<         return $spreadsheet;



>                 if (isset($namespaces['x'])) {
>                     $xmlX = $worksheet->children($namespaces['x']);
>                     if (isset($xmlX->WorksheetOptions)) {
>                         (new PageSettings($xmlX, $namespaces))->loadPageSettings($spreadsheet);


    }

< 
<     protected static function convertStringEncoding($string, $charset)
<     {
<         if ($charset != 'UTF-8') {
<             return StringHelper::convertEncoding($string, 'UTF-8', $charset);


        }

< 
<         return $string;


    }

< 
<     protected function parseRichText($is)
<     {
<         $value = new RichText();
< 
<         $value->createText(self::convertStringEncoding($is, $this->charSet));
< 
<         return $value;
<     }
< 
<     /**
<      * @param SimpleXMLElement $xml
<      * @param array $namespaces
<      */
<     private function parseStyles(SimpleXMLElement $xml, array $namespaces)
<     {
<         if (!isset($xml->Styles)) {
<             return;
<         }
< 
<         foreach ($xml->Styles[0] as $style) {
<             $style_ss = $style->attributes($namespaces['ss']);
<             $styleID = (string) $style_ss['ID'];
<             $this->styles[$styleID] = (isset($this->styles['Default'])) ? $this->styles['Default'] : [];
<             foreach ($style as $styleType => $styleData) {
<                 $styleAttributes = $styleData->attributes($namespaces['ss']);
<                 switch ($styleType) {
<                     case 'Alignment':
<                         $this->parseStyleAlignment($styleID, $styleAttributes);
< 
<                         break;
<                     case 'Borders':
<                         $this->parseStyleBorders($styleID, $styleData, $namespaces);
< 
<                         break;
<                     case 'Font':
<                         $this->parseStyleFont($styleID, $styleAttributes);
< 
<                         break;
<                     case 'Interior':
<                         $this->parseStyleInterior($styleID, $styleAttributes);
< 
<                         break;
<                     case 'NumberFormat':
<                         $this->parseStyleNumberFormat($styleID, $styleAttributes);
< 
<                         break;
<                 }
<             }
<         }
<     }
< 
<     /**
<      * @param string $styleID
<      * @param SimpleXMLElement $styleAttributes
<      */
<     private function parseStyleAlignment($styleID, SimpleXMLElement $styleAttributes)
<     {
<         $verticalAlignmentStyles = [
<             Alignment::VERTICAL_BOTTOM,
<             Alignment::VERTICAL_TOP,
<             Alignment::VERTICAL_CENTER,
<             Alignment::VERTICAL_JUSTIFY,
<         ];
<         $horizontalAlignmentStyles = [
<             Alignment::HORIZONTAL_GENERAL,
<             Alignment::HORIZONTAL_LEFT,
<             Alignment::HORIZONTAL_RIGHT,
<             Alignment::HORIZONTAL_CENTER,
<             Alignment::HORIZONTAL_CENTER_CONTINUOUS,
<             Alignment::HORIZONTAL_JUSTIFY,
<         ];
< 
<         foreach ($styleAttributes as $styleAttributeKey => $styleAttributeValue) {
<             $styleAttributeValue = (string) $styleAttributeValue;
<             switch ($styleAttributeKey) {
<                 case 'Vertical':
<                     if (self::identifyFixedStyleValue($verticalAlignmentStyles, $styleAttributeValue)) {
<                         $this->styles[$styleID]['alignment']['vertical'] = $styleAttributeValue;



>             ++$worksheetID;


                    }


<                     break;
<                 case 'Horizontal':
<                     if (self::identifyFixedStyleValue($horizontalAlignmentStyles, $styleAttributeValue)) {
<                         $this->styles[$styleID]['alignment']['horizontal'] = $styleAttributeValue;
<                     }
< 
<                     break;
<                 case 'WrapText':
<                     $this->styles[$styleID]['alignment']['wrapText'] = true;
< 
<                     break;



>         // Globally scoped defined names
>         $activeWorksheet = $spreadsheet->setActiveSheetIndex(0);
>         if (isset($xml->Names[0])) {
>             foreach ($xml->Names[0] as $definedName) {
>                 $definedName_ss = self::getAttributes($definedName, $namespaces['ss']);
>                 $name = (string) $definedName_ss['Name'];
>                 $definedValue = (string) $definedName_ss['RefersTo'];
>                 $convertedValue = AddressHelper::convertFormulaToA1($definedValue);
>                 if ($convertedValue[0] === '=') {
>                     $convertedValue = substr($convertedValue, 1);


            }

>                 $spreadsheet->addDefinedName(DefinedName::createInstance($name, $activeWorksheet, $convertedValue));


        }
    }


<     /**
<      * @param $styleID
<      * @param SimpleXMLElement $styleData
<      * @param array $namespaces
<      */
<     private function parseStyleBorders($styleID, SimpleXMLElement $styleData, array $namespaces)
<     {
<         foreach ($styleData->Border as $borderStyle) {
<             $borderAttributes = $borderStyle->attributes($namespaces['ss']);
<             $thisBorder = [];
<             foreach ($borderAttributes as $borderStyleKey => $borderStyleValue) {
<                 switch ($borderStyleKey) {
<                     case 'LineStyle':
<                         $thisBorder['borderStyle'] = Border::BORDER_MEDIUM;
< 
<                         break;
<                     case 'Weight':
<                         break;
<                     case 'Position':
<                         $borderPosition = strtolower($borderStyleValue);
< 
<                         break;
<                     case 'Color':
<                         $borderColour = substr($borderStyleValue, 1);
<                         $thisBorder['color']['rgb'] = $borderColour;
< 
<                         break;
<                 }
<             }
<             if (!empty($thisBorder)) {
<                 if (($borderPosition == 'left') || ($borderPosition == 'right') || ($borderPosition == 'top') || ($borderPosition == 'bottom')) {
<                     $this->styles[$styleID]['borders'][$borderPosition] = $thisBorder;
<                 }
<             }
<         }



>         // Return
>         return $spreadsheet;


    }


<     /**
<      * @param $styleID
<      * @param SimpleXMLElement $styleAttributes
<      */
<     private function parseStyleFont($styleID, SimpleXMLElement $styleAttributes)
<     {
<         $underlineStyles = [
<             Font::UNDERLINE_NONE,
<             Font::UNDERLINE_DOUBLE,
<             Font::UNDERLINE_DOUBLEACCOUNTING,
<             Font::UNDERLINE_SINGLE,
<             Font::UNDERLINE_SINGLEACCOUNTING,
<         ];
< 
<         foreach ($styleAttributes as $styleAttributeKey => $styleAttributeValue) {
<             $styleAttributeValue = (string) $styleAttributeValue;
<             switch ($styleAttributeKey) {
<                 case 'FontName':
<                     $this->styles[$styleID]['font']['name'] = $styleAttributeValue;
< 
<                     break;
<                 case 'Size':
<                     $this->styles[$styleID]['font']['size'] = $styleAttributeValue;
< 
<                     break;
<                 case 'Color':
<                     $this->styles[$styleID]['font']['color']['rgb'] = substr($styleAttributeValue, 1);
< 
<                     break;
<                 case 'Bold':
<                     $this->styles[$styleID]['font']['bold'] = true;
< 
<                     break;
<                 case 'Italic':
<                     $this->styles[$styleID]['font']['italic'] = true;
< 
<                     break;
<                 case 'Underline':
<                     if (self::identifyFixedStyleValue($underlineStyles, $styleAttributeValue)) {
<                         $this->styles[$styleID]['font']['underline'] = $styleAttributeValue;



>     protected function parseCellComment(
>         SimpleXMLElement $comment,
>         array $namespaces,
>         Spreadsheet $spreadsheet,
>         string $columnID,
>         int $rowID
>     ): void {
>         $commentAttributes = $comment->attributes($namespaces['ss']);
>         $author = 'unknown';
>         if (isset($commentAttributes->Author)) {
>             $author = (string) $commentAttributes->Author;


                    }


<                     break;
<             }
<         }



>         $node = $comment->Data->asXML();
>         $annotation = strip_tags((string) $node);
>         $spreadsheet->getActiveSheet()->getComment($columnID . $rowID)
>             ->setAuthor($author)
>             ->setText($this->parseRichText($annotation));


    }


<     /**
<      * @param $styleID
<      * @param SimpleXMLElement $styleAttributes
<      */
<     private function parseStyleInterior($styleID, SimpleXMLElement $styleAttributes)



>     protected function parseRichText(string $annotation): RichText


    {

<         foreach ($styleAttributes as $styleAttributeKey => $styleAttributeValue) {
<             switch ($styleAttributeKey) {
<                 case 'Color':
<                     $this->styles[$styleID]['fill']['color']['rgb'] = substr($styleAttributeValue, 1);



>         $value = new RichText();




<                     break;
<                 case 'Pattern':
<                     $this->styles[$styleID]['fill']['fillType'] = strtolower($styleAttributeValue);



>         $value->createText($annotation);




<                     break;
<             }
<         }



>         return $value;


    }


<     /**
<      * @param $styleID
<      * @param SimpleXMLElement $styleAttributes
<      */
<     private function parseStyleNumberFormat($styleID, SimpleXMLElement $styleAttributes)



>     private static function getAttributes(?SimpleXMLElement $simple, string $node): SimpleXMLElement


    {

<         $fromFormats = ['\-', '\ '];
<         $toFormats = ['-', ' '];
< 
<         foreach ($styleAttributes as $styleAttributeKey => $styleAttributeValue) {
<             $styleAttributeValue = str_replace($fromFormats, $toFormats, $styleAttributeValue);
<             switch ($styleAttributeValue) {
<                 case 'Short Date':
<                     $styleAttributeValue = 'dd/mm/yyyy';
< 
<                     break;
<             }
< 
<             if ($styleAttributeValue > '') {
<                 $this->styles[$styleID]['numberFormat']['formatCode'] = $styleAttributeValue;
<             }
<         }



>         return ($simple === null)
>             ? new SimpleXMLElement('<xml></xml>')
>             : ($simple->attributes($node) ?? new SimpleXMLElement('<xml></xml>'));


    }
}