<?php

/** PHPExcel root directory */
if (!defined('PHPEXCEL_ROOT')) {
    /**
     * @ignore
     */
    define('PHPEXCEL_ROOT', dirname(__FILE__) . '/../../');
    require(PHPEXCEL_ROOT . 'PHPExcel/Autoloader.php');
}

/**
 * PHPExcel_Reader_Excel2003XML
 *
 * 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##
 */
class PHPExcel_Reader_Excel2003XML extends PHPExcel_Reader_Abstract implements PHPExcel_Reader_IReader
{
    /**
     * Formats
     *
     * @var array
     */
    protected $styles = [];

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

    /**
     * Create a new PHPExcel_Reader_Excel2003XML
     */
    public function __construct()
    {
        $this->readFilter = new PHPExcel_Reader_DefaultReadFilter();
    }

    /**
     * Can the current PHPExcel_Reader_IReader read the file?
     *
     * @param     string         $pFilename
     * @throws PHPExcel_Reader_Exception
     * @return     boolean
     */
    public function canRead($pFilename)
    {
        //    Office                    xmlns:o="urn:schemas-microsoft-com:office:office"
        //    Excel                    xmlns:x="urn:schemas-microsoft-com:office:excel"
        //    XML Spreadsheet            xmlns:ss="urn:schemas-microsoft-com:office:spreadsheet"
        //    Spreadsheet component    xmlns:c="urn:schemas-microsoft-com:office:component:spreadsheet"
        //    XML schema                 xmlns:s="uuid:BDC6E3F0-6DA3-11d1-A2A3-00AA00C14882"
        //    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"?>',
            ];

        // Open file
        $this->openFile($pFilename);
        $fileHandle = $this->fileHandle;

        // Read sample data (first 2 KB will do)
        $data = fread($fileHandle, 2048);
        fclose($fileHandle);

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

        //    Retrieve charset encoding
        if (preg_match('/<?xml.*encoding=[\'"](.*?)[\'"].*?>/um', $data, $matches)) {
            $this->charSet = mb_strtoupper($matches[1]);
        }
//        echo 'Character Set is ', $this->charSet,'<br />';

        return $valid;
    }

    /**
     * Reads names of the worksheets from a file, without parsing the whole file to a PHPExcel object
     *
     * @param     string         $pFilename
     * @throws     PHPExcel_Reader_Exception
     */
    public function listWorksheetNames($pFilename)
    {
        // Check if file exists
        if (!file_exists($pFilename)) {
            throw new PHPExcel_Reader_Exception('Could not open ' . $pFilename . ' for reading! File does not exist.');
        }
        if (!$this->canRead($pFilename)) {
            throw new PHPExcel_Reader_Exception($pFilename . ' is an Invalid Spreadsheet file.');
        }

        $worksheetNames = [];

        $xml = simplexml_load_string($this->securityScan(file_get_contents($pFilename)), 'SimpleXMLElement', PHPExcel_Settings::getLibXmlLoaderOptions());
        $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);
        }

        return $worksheetNames;
    }

    /**
     * Return worksheet info (Name, Last Column Letter, Last Column Index, Total Rows, Total Columns)
     *
     * @param   string     $pFilename
     * @throws   PHPExcel_Reader_Exception
     */
    public function listWorksheetInfo($pFilename)
    {
        // Check if file exists
        if (!file_exists($pFilename)) {
            throw new PHPExcel_Reader_Exception('Could not open ' . $pFilename . ' for reading! File does not exist.');
        }

        $worksheetInfo = [];

        $xml = simplexml_load_string($this->securityScan(file_get_contents($pFilename)), 'SimpleXMLElement', PHPExcel_Settings::getLibXmlLoaderOptions());
        $namespaces = $xml->getNamespaces(true);

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

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

            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);
                    }
                }
            }

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

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

        return $worksheetInfo;
    }

    /**
     * Loads PHPExcel from file
     *
     * @param     string         $pFilename
     * @throws     PHPExcel_Reader_Exception
     * @return     PHPExcel
     */
    public function load($pFilename)
    {
        // Create new PHPExcel
        $objPHPExcel = new PHPExcel();
        $objPHPExcel->removeSheetByIndex(0);

        // Load into this instance
        return $this->loadIntoExisting($pFilename, $objPHPExcel);
    }

    protected static function identifyFixedStyleValue($styleList, &$styleAttributeValue)
    {
        $styleAttributeValue = mb_strtolower($styleAttributeValue);
        foreach ($styleList as $style) {
            if ($styleAttributeValue == mb_strtolower($style)) {
                $styleAttributeValue = $style;

                return true;
            }
        }

        return false;
    }

    /**
     * pixel units to excel width units(units of 1/256th of a character width)
     * @param pxs
     * @param mixed $pxs
     * @return
     */
    protected static function pixel2WidthUnits($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 widthUnits
     * @param mixed $widthUnits
     * @return
     */
    protected static function widthUnits2Pixel($widthUnits)
    {
        $pixels = ($widthUnits / 256) * 7;
        $offsetWidthUnits = $widthUnits % 256;
        $pixels += round($offsetWidthUnits / (256 / 7));

        return $pixels;
    }

    protected static function hex2str($hex)
    {
        return chr(hexdec($hex[1]));
    }

    /**
     * Loads PHPExcel from file into PHPExcel instance
     *
     * @param     string         $pFilename
     * @throws     PHPExcel_Reader_Exception
     * @return     PHPExcel
     */
    public function loadIntoExisting($pFilename, PHPExcel $objPHPExcel)
    {
        $fromFormats = ['\-', '\ '];
        $toFormats = ['-', ' '];

        $underlineStyles = [
            PHPExcel_Style_Font::UNDERLINE_NONE,
            PHPExcel_Style_Font::UNDERLINE_DOUBLE,
            PHPExcel_Style_Font::UNDERLINE_DOUBLEACCOUNTING,
            PHPExcel_Style_Font::UNDERLINE_SINGLE,
            PHPExcel_Style_Font::UNDERLINE_SINGLEACCOUNTING,
        ];
        $verticalAlignmentStyles = [
            PHPExcel_Style_Alignment::VERTICAL_BOTTOM,
            PHPExcel_Style_Alignment::VERTICAL_TOP,
            PHPExcel_Style_Alignment::VERTICAL_CENTER,
            PHPExcel_Style_Alignment::VERTICAL_JUSTIFY,
        ];
        $horizontalAlignmentStyles = [
            PHPExcel_Style_Alignment::HORIZONTAL_GENERAL,
            PHPExcel_Style_Alignment::HORIZONTAL_LEFT,
            PHPExcel_Style_Alignment::HORIZONTAL_RIGHT,
            PHPExcel_Style_Alignment::HORIZONTAL_CENTER,
            PHPExcel_Style_Alignment::HORIZONTAL_CENTER_CONTINUOUS,
            PHPExcel_Style_Alignment::HORIZONTAL_JUSTIFY,
        ];

        $timezoneObj = new DateTimeZone('Europe/London');
        $GMT = new DateTimeZone('UTC');

        // Check if file exists
        if (!file_exists($pFilename)) {
            throw new PHPExcel_Reader_Exception('Could not open ' . $pFilename . ' for reading! File does not exist.');
        }

        if (!$this->canRead($pFilename)) {
            throw new PHPExcel_Reader_Exception($pFilename . ' is an Invalid Spreadsheet file.');
        }

        $xml = simplexml_load_string($this->securityScan(file_get_contents($pFilename)), 'SimpleXMLElement', PHPExcel_Settings::getLibXmlLoaderOptions());
        $namespaces = $xml->getNamespaces(true);

        $docProps = $objPHPExcel->getProperties();
        if (isset($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, $this->charSet));
                        break;
                }
            }
        }
        if (isset($xml->CustomDocumentProperties)) {
            foreach ($xml->CustomDocumentProperties[0] as $propertyName => $propertyValue) {
                $propertyAttributes = $propertyValue->attributes($namespaces['dt']);
                $propertyName = preg_replace_callback('/_x([0-9a-z]{4})_/', 'PHPExcel_Reader_Excel2003XML::hex2str', $propertyName);
                $propertyType = PHPExcel_DocumentProperties::PROPERTY_TYPE_UNKNOWN;
                switch ((string) $propertyAttributes) {
                    case 'string':
                        $propertyType = PHPExcel_DocumentProperties::PROPERTY_TYPE_STRING;
                        $propertyValue = trim($propertyValue);
                        break;
                    case 'boolean':
                        $propertyType = PHPExcel_DocumentProperties::PROPERTY_TYPE_BOOLEAN;
                        $propertyValue = (bool) $propertyValue;
                        break;
                    case 'integer':
                        $propertyType = PHPExcel_DocumentProperties::PROPERTY_TYPE_INTEGER;
                        $propertyValue = intval($propertyValue);
                        break;
                    case 'float':
                        $propertyType = PHPExcel_DocumentProperties::PROPERTY_TYPE_FLOAT;
                        $propertyValue = floatval($propertyValue);
                        break;
                    case 'dateTime.tz':
                        $propertyType = PHPExcel_DocumentProperties::PROPERTY_TYPE_DATE;
                        $propertyValue = strtotime(trim($propertyValue));
                        break;
                }
                $docProps->setCustomProperty($propertyName, $propertyValue, $propertyType);
            }
        }

        foreach ($xml->Styles[0] as $style) {
            $style_ss = $style->attributes($namespaces['ss']);
            $styleID = (string) $style_ss['ID'];
//            echo 'Style ID = '.$styleID.'<br />';
            $this->styles[$styleID] = (isset($this->styles['Default'])) ? $this->styles['Default'] : [];
            foreach ($style as $styleType => $styleData) {
                $styleAttributes = $styleData->attributes($namespaces['ss']);
//                echo $styleType.'<br />';
                switch ($styleType) {
                    case 'Alignment':
                        foreach ($styleAttributes as $styleAttributeKey => $styleAttributeValue) {
//                                echo $styleAttributeKey.' = '.$styleAttributeValue.'<br />';
                            $styleAttributeValue = (string) $styleAttributeValue;
                            switch ($styleAttributeKey) {
                                case 'Vertical':
                                    if (self::identifyFixedStyleValue($verticalAlignmentStyles, $styleAttributeValue)) {
                                        $this->styles[$styleID]['alignment']['vertical'] = $styleAttributeValue;
                                    }
                                    break;
                                case 'Horizontal':
                                    if (self::identifyFixedStyleValue($horizontalAlignmentStyles, $styleAttributeValue)) {
                                        $this->styles[$styleID]['alignment']['horizontal'] = $styleAttributeValue;
                                    }
                                    break;
                                case 'WrapText':
                                    $this->styles[$styleID]['alignment']['wrap'] = true;
                                    break;
                            }
                        }
                        break;
                    case 'Borders':
                        foreach ($styleData->Border as $borderStyle) {
                            $borderAttributes = $borderStyle->attributes($namespaces['ss']);
                            $thisBorder = [];
                            foreach ($borderAttributes as $borderStyleKey => $borderStyleValue) {
//                                    echo $borderStyleKey.' = '.$borderStyleValue.'<br />';
                                switch ($borderStyleKey) {
                                    case 'LineStyle':
                                        $thisBorder['style'] = PHPExcel_Style_Border::BORDER_MEDIUM;
//                                                $thisBorder['style'] = $borderStyleValue;
                                        break;
                                    case 'Weight':
//                                                $thisBorder['style'] = $borderStyleValue;
                                        break;
                                    case 'Position':
                                        $borderPosition = mb_strtolower($borderStyleValue);
                                        break;
                                    case 'Color':
                                        $borderColour = mb_substr($borderStyleValue, 1);
                                        $thisBorder['color']['rgb'] = $borderColour;
                                        break;
                                }
                            }
                            if (!empty($thisBorder)) {
                                if (('left' == $borderPosition) || ('right' == $borderPosition) || ('top' == $borderPosition) || ('bottom' == $borderPosition)) {
                                    $this->styles[$styleID]['borders'][$borderPosition] = $thisBorder;
                                }
                            }
                        }
                        break;
                    case 'Font':
                        foreach ($styleAttributes as $styleAttributeKey => $styleAttributeValue) {
//                                echo $styleAttributeKey.' = '.$styleAttributeValue.'<br />';
                            $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'] = mb_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'] = $styleAttributeValue;
                                    }
                                    break;
                            }
                        }
                        break;
                    case 'Interior':
                        foreach ($styleAttributes as $styleAttributeKey => $styleAttributeValue) {
//                                echo $styleAttributeKey.' = '.$styleAttributeValue.'<br />';
                            switch ($styleAttributeKey) {
                                case 'Color':
                                    $this->styles[$styleID]['fill']['color']['rgb'] = mb_substr($styleAttributeValue, 1);
                                    break;
                            }
                        }
                        break;
                    case 'NumberFormat':
                        foreach ($styleAttributes as $styleAttributeKey => $styleAttributeValue) {
//                                echo $styleAttributeKey.' = '.$styleAttributeValue.'<br />';
                            $styleAttributeValue = str_replace($fromFormats, $toFormats, $styleAttributeValue);
                            switch ($styleAttributeValue) {
                                case 'Short Date':
                                    $styleAttributeValue = 'dd/mm/yyyy';
                                    break;
                            }
                            if ($styleAttributeValue > '') {
                                $this->styles[$styleID]['numberformat']['code'] = $styleAttributeValue;
                            }
                        }
                        break;
                    case 'Protection':
                        foreach ($styleAttributes as $styleAttributeKey => $styleAttributeValue) {
//                                echo $styleAttributeKey.' = '.$styleAttributeValue.'<br />';
                        }
                        break;
                }
            }
//            print_r($this->styles[$styleID]);
//            echo '<hr />';
        }
//        echo '<hr />';

        $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, true))) {
                continue;
            }

//            echo '<h3>Worksheet: ', $worksheet_ss['Name'],'<h3>';
//
            // Create new Worksheet
            $objPHPExcel->createSheet();
            $objPHPExcel->setActiveSheetIndex($worksheetID);
            if (isset($worksheet_ss['Name'])) {
                $worksheetName = self::convertStringEncoding((string) $worksheet_ss['Name'], $this->charSet);
                //    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
                $objPHPExcel->getActiveSheet()->setTitle($worksheetName, false);
            }

            $columnID = 'A';
            if (isset($worksheet->Table->Column)) {
                foreach ($worksheet->Table->Column as $columnData) {
                    $columnData_ss = $columnData->attributes($namespaces['ss']);
                    if (isset($columnData_ss['Index'])) {
                        $columnID = PHPExcel_Cell::stringFromColumnIndex($columnData_ss['Index'] - 1);
                    }
                    if (isset($columnData_ss['Width'])) {
                        $columnWidth = $columnData_ss['Width'];
//                        echo '<b>Setting column width for '.$columnID.' to '.$columnWidth.'</b><br />';
                        $objPHPExcel->getActiveSheet()->getColumnDimension($columnID)->setWidth($columnWidth / 5.4);
                    }
                    ++$columnID;
                }
            }

            $rowID = 1;
            if (isset($worksheet->Table->Row)) {
                $additionalMergedCells = 0;
                foreach ($worksheet->Table->Row as $rowData) {
                    $rowHasData = false;
                    $row_ss = $rowData->attributes($namespaces['ss']);
                    if (isset($row_ss['Index'])) {
                        $rowID = (int) $row_ss['Index'];
                    }
//                    echo '<b>Row '.$rowID.'</b><br />';

                    $columnID = 'A';
                    foreach ($rowData->Cell as $cell) {
                        $cell_ss = $cell->attributes($namespaces['ss']);
                        if (isset($cell_ss['Index'])) {
                            $columnID = PHPExcel_Cell::stringFromColumnIndex($cell_ss['Index'] - 1);
                        }
                        $cellRange = $columnID . $rowID;

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

                        if ((isset($cell_ss['MergeAcross'])) || (isset($cell_ss['MergeDown']))) {
                            $columnTo = $columnID;
                            if (isset($cell_ss['MergeAcross'])) {
                                $additionalMergedCells += (int)$cell_ss['MergeAcross'];
                                $columnTo = PHPExcel_Cell::stringFromColumnIndex(PHPExcel_Cell::columnIndexFromString($columnID) + $cell_ss['MergeAcross'] - 1);
                            }
                            $rowTo = $rowID;
                            if (isset($cell_ss['MergeDown'])) {
                                $rowTo = $rowTo + $cell_ss['MergeDown'];
                            }
                            $cellRange .= ':' . $columnTo . $rowTo;
                            $objPHPExcel->getActiveSheet()->mergeCells($cellRange);
                        }

                        $cellIsSet = $hasCalculatedValue = false;
                        $cellDataFormula = '';
                        if (isset($cell_ss['Formula'])) {
                            $cellDataFormula = $cell_ss['Formula'];
                            // added this as a check for array formulas
                            if (isset($cell_ss['ArrayRange'])) {
                                $cellDataCSEFormula = $cell_ss['ArrayRange'];
//                                echo "found an array formula at ".$columnID.$rowID."<br />";
                            }
                            $hasCalculatedValue = true;
                        }
                        if (isset($cell->Data)) {
                            $cellValue = $cellData = $cell->Data;
                            $type = PHPExcel_Cell_DataType::TYPE_NULL;
                            $cellData_ss = $cellData->attributes($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 = PHPExcel_Cell_DataType::TYPE_STRING;
                                        break;
                                    case 'Number':
                                        $type = PHPExcel_Cell_DataType::TYPE_NUMERIC;
                                        $cellValue = (float) $cellValue;
                                        if (floor($cellValue) == $cellValue) {
                                            $cellValue = (int) $cellValue;
                                        }
                                        break;
                                    case 'Boolean':
                                        $type = PHPExcel_Cell_DataType::TYPE_BOOL;
                                        $cellValue = (0 != $cellValue);
                                        break;
                                    case 'DateTime':
                                        $type = PHPExcel_Cell_DataType::TYPE_NUMERIC;
                                        $cellValue = PHPExcel_Shared_Date::PHPToExcel(strtotime($cellValue));
                                        break;
                                    case 'Error':
                                        $type = PHPExcel_Cell_DataType::TYPE_ERROR;
                                        break;
                                }
                            }

                            if ($hasCalculatedValue) {
//                                echo 'FORMULA<br />';
                                $type = PHPExcel_Cell_DataType::TYPE_FORMULA;
                                $columnNumber = PHPExcel_Cell::columnIndexFromString($columnID);
                                if ('of:' == mb_substr($cellDataFormula, 0, 3)) {
                                    $cellDataFormula = mb_substr($cellDataFormula, 3);
//                                    echo 'Before: ', $cellDataFormula,'<br />';
                                    $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)
//                                    echo 'Before: ', $cellDataFormula,'<br />';
                                    $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, '[]');
                                                }
                                                $A1CellReference = PHPExcel_Cell::stringFromColumnIndex($columnReference - 1) . $rowReference;
                                                $value = substr_replace($value, $A1CellReference, $cellReference[0][1], mb_strlen($cellReference[0][0]));
                                            }
                                        }
                                    }
                                }
                                unset($value);
                                //    Then rebuild the formula string
                                $cellDataFormula = implode('"', $temp);
//                                echo 'After: ', $cellDataFormula,'<br />';
                            }

//                            echo 'Cell '.$columnID.$rowID.' is a '.$type.' with a value of '.(($hasCalculatedValue) ? $cellDataFormula : $cellValue).'<br />';
//
                            $objPHPExcel->getActiveSheet()->getCell($columnID . $rowID)->setValueExplicit((($hasCalculatedValue) ? $cellDataFormula : $cellValue), $type);
                            if ($hasCalculatedValue) {
//                                echo 'Formula result is '.$cellValue.'<br />';
                                $objPHPExcel->getActiveSheet()->getCell($columnID . $rowID)->setCalculatedValue($cellValue);
                            }
                            $cellIsSet = $rowHasData = true;
                        }

                        if (isset($cell->Comment)) {
//                            echo '<b>comment found</b><br />';
                            $commentAttributes = $cell->Comment->attributes($namespaces['ss']);
                            $author = 'unknown';
                            if (isset($commentAttributes->Author)) {
                                $author = (string)$commentAttributes->Author;
//                                echo 'Author: ', $author,'<br />';
                            }
                            $node = $cell->Comment->Data->asXML();
//                            $annotation = str_replace('html:','',substr($node,49,-10));
//                            echo $annotation,'<br />';
                            $annotation = strip_tags($node);
//                            echo 'Annotation: ', $annotation,'<br />';
                            $objPHPExcel->getActiveSheet()->getComment($columnID . $rowID)->setAuthor(self::convertStringEncoding($author, $this->charSet))->setText($this->parseRichText($annotation));
                        }

                        if (($cellIsSet) && (isset($cell_ss['StyleID']))) {
                            $style = (string) $cell_ss['StyleID'];
//                            echo 'Cell style for '.$columnID.$rowID.' is '.$style.'<br />';
                            if ((isset($this->styles[$style])) && (!empty($this->styles[$style]))) {
//                                echo 'Cell '.$columnID.$rowID.'<br />';
//                                print_r($this->styles[$style]);
//                                echo '<br />';
                                if (!$objPHPExcel->getActiveSheet()->cellExists($columnID . $rowID)) {
                                    $objPHPExcel->getActiveSheet()->getCell($columnID . $rowID)->setValue(null);
                                }
                                $objPHPExcel->getActiveSheet()->getStyle($cellRange)->applyFromArray($this->styles[$style]);
                            }
                        }
                        ++$columnID;
                        while ($additionalMergedCells > 0) {
                            ++$columnID;
                            $additionalMergedCells--;
                        }
                    }

                    if ($rowHasData) {
                        if (isset($row_ss['StyleID'])) {
                            $rowStyle = $row_ss['StyleID'];
                        }
                        if (isset($row_ss['Height'])) {
                            $rowHeight = $row_ss['Height'];
//                            echo '<b>Setting row height to '.$rowHeight.'</b><br />';
                            $objPHPExcel->getActiveSheet()->getRowDimension($rowID)->setRowHeight($rowHeight);
                        }
                    }

                    ++$rowID;
                }
            }
            ++$worksheetID;
        }

        // Return
        return $objPHPExcel;
    }

    protected static function convertStringEncoding($string, $charset)
    {
        if ('UTF-8' != $charset) {
            return PHPExcel_Shared_String::ConvertEncoding($string, 'UTF-8', $charset);
        }

        return $string;
    }

    protected function parseRichText($is = '')
    {
        $value = new PHPExcel_RichText();

        $value->createText(self::convertStringEncoding($is, $this->charSet));

        return $value;
    }
}
