Worksheet.php

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<?php
// Original file header of PEAR::Spreadsheet_Excel_Writer_Worksheet (used as the base for this class):
// -----------------------------------------------------------------------------------------
// /*
// *  Module written/ported by Xavier Noguer <xnoguer@rezebra.com>
// *
// *  The majority of this is _NOT_ my code.  I simply ported it from the
// *  PERL Spreadsheet::WriteExcel module.
// *
// *  The author of the Spreadsheet::WriteExcel module is John McNamara
// *  <jmcnamara@cpan.org>
// *
// *  I _DO_ maintain this code, and John McNamara has nothing to do with the
// *  porting of this code to PHP.  Any questions directly related to this
// *  class library should be directed to me.
// *
// *  License Information:
// *
// *    Spreadsheet_Excel_Writer:  A library for generating Excel Spreadsheets
// *    Copyright (c) 2002-2003 Xavier Noguer xnoguer@rezebra.com
// *
// *    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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
// */


class PHPExcel_Writer_Excel5_Worksheet extends PHPExcel_Writer_Excel5_BIFFwriter
{
        private $_parser;

        public $_xls_strmax;

        public $_colinfo;

        public $_selection;

        public $_active_pane;

        public $_outline_on;

        public $_outline_style;

        public $_outline_below;

        public $_outline_right;

        public $_str_total;

        public $_str_unique;

        public $_str_table;

        private $_colors;

        private $_firstRowIndex;

        private $_lastRowIndex;

        private $_firstColumnIndex;

        private $_lastColumnIndex;

        public $_phpSheet;

        private $_countCellStyleXfs;

        private $_escher;

        public $_fntHashIndex;

        public function __construct(&$str_total, &$str_unique, &$str_table, &$colors,
                                                                $parser, $preCalculateFormulas, $phpSheet)
        {
                // It needs to call its parent's constructor explicitly
                parent::__construct();

                // change BIFFwriter limit for CONTINUE records
//              $this->_limit = 8224;


                $this->_preCalculateFormulas = $preCalculateFormulas;
                $this->_str_total               = &$str_total;
                $this->_str_unique              = &$str_unique;
                $this->_str_table               = &$str_table;
                $this->_colors                  = &$colors;
                $this->_parser                  = $parser;

                $this->_phpSheet = $phpSheet;

                //$this->ext_sheets             = array();
                //$this->offset                 = 0;
                $this->_xls_strmax              = 255;
                $this->_colinfo                 = array();
                $this->_selection               = array(0,0,0,0);
                $this->_active_pane             = 3;

                $this->_print_headers           = 0;

                $this->_outline_style           = 0;
                $this->_outline_below           = 1;
                $this->_outline_right           = 1;
                $this->_outline_on                      = 1;

                $this->_fntHashIndex    = array();

                // calculate values for DIMENSIONS record
                $minR = 1;
                $minC = 'A';

                $maxR  = $this->_phpSheet->getHighestRow();
                $maxC = $this->_phpSheet->getHighestColumn();

                // Determine lowest and highest column and row
//              $this->_firstRowIndex = ($minR > 65535) ? 65535 : $minR;
                $this->_lastRowIndex = ($maxR > 65535) ? 65535 : $maxR ;

                $this->_firstColumnIndex        = PHPExcel_Cell::columnIndexFromString($minC);
                $this->_lastColumnIndex         = PHPExcel_Cell::columnIndexFromString($maxC);

//              if ($this->_firstColumnIndex > 255) $this->_firstColumnIndex = 255;
                if ($this->_lastColumnIndex > 255) $this->_lastColumnIndex = 255;

                $this->_countCellStyleXfs = count($phpSheet->getParent()->getCellStyleXfCollection());
        }

        function close()
        {
                $_phpSheet = $this->_phpSheet;

                $num_sheets = $_phpSheet->getParent()->getSheetCount();

                // Write BOF record
                $this->_storeBof(0x0010);

                // Write PRINTHEADERS
                $this->_writePrintHeaders();

                // Write PRINTGRIDLINES
                $this->_writePrintGridlines();

                // Write GRIDSET
                $this->_writeGridset();

                // Calculate column widths
                $_phpSheet->calculateColumnWidths();

                // Column dimensions
                if (($defaultWidth = $_phpSheet->getDefaultColumnDimension()->getWidth()) < 0) {
                        $defaultWidth = PHPExcel_Shared_Font::getDefaultColumnWidthByFont($_phpSheet->getParent()->getDefaultStyle()->getFont());
                }

                $columnDimensions = $_phpSheet->getColumnDimensions();
                $maxCol = $this->_lastColumnIndex -1;
                for ($i = 0; $i <= $maxCol; ++$i) {
                        $hidden = 0;
                        $level = 0;
                        $xfIndex = 15; // there are 15 cell style Xfs

                        $width = $defaultWidth;

                        $columnLetter = PHPExcel_Cell::stringFromColumnIndex($i);
                        if (isset($columnDimensions[$columnLetter])) {
                                $columnDimension = $columnDimensions[$columnLetter];
                                if ($columnDimension->getWidth() >= 0) {
                                        $width = $columnDimension->getWidth();
                                }
                                $hidden = $columnDimension->getVisible() ? 0 : 1;
                                $level = $columnDimension->getOutlineLevel();
                                $xfIndex = $columnDimension->getXfIndex() + 15; // there are 15 cell style Xfs
                        }

                        // Components of _colinfo:
                        // $firstcol first column on the range
                        // $lastcol  last column on the range
                        // $width       width to set
                        // $xfIndex  The optional cell style Xf index to apply to the columns
                        // $hidden   The optional hidden atribute
                        // $level       The optional outline level
                        $this->_colinfo[] = array($i, $i, $width, $xfIndex, $hidden, $level);
                }

                // Write GUTS
                $this->_writeGuts();

                // Write DEFAULTROWHEIGHT
                $this->_writeDefaultRowHeight();

                // Write WSBOOL
                $this->_writeWsbool();

                // Write horizontal and vertical page breaks
                $this->_writeBreaks();

                // Write page header
                $this->_writeHeader();

                // Write page footer
                $this->_writeFooter();

                // Write page horizontal centering
                $this->_writeHcenter();

                // Write page vertical centering
                $this->_writeVcenter();

                // Write left margin
                $this->_writeMarginLeft();

                // Write right margin
                $this->_writeMarginRight();

                // Write top margin
                $this->_writeMarginTop();

                // Write bottom margin
                $this->_writeMarginBottom();

                // Write page setup
                $this->_writeSetup();

                // Write sheet protection
                $this->_writeProtect();

                // Write SCENPROTECT
                $this->_writeScenProtect();

                // Write OBJECTPROTECT
                $this->_writeObjectProtect();

                // Write sheet password
                $this->_writePassword();

                // Write DEFCOLWIDTH record
                $this->_writeDefcol();

                // Write the COLINFO records if they exist
                if (!empty($this->_colinfo)) {
                        $colcount = count($this->_colinfo);
                        for ($i = 0; $i < $colcount; ++$i) {
                                $this->_writeColinfo($this->_colinfo[$i]);
                        }
                }
                $autoFilterRange = $_phpSheet->getAutoFilter()->getRange();
                if (!empty($autoFilterRange)) {
                        // Write AUTOFILTERINFO
                        $this->_writeAutoFilterInfo();
                }

                // Write sheet dimensions
                $this->_writeDimensions();

                // Row dimensions
                foreach ($_phpSheet->getRowDimensions() as $rowDimension) {
                        $xfIndex = $rowDimension->getXfIndex() + 15; // there are 15 cellXfs
                        $this->_writeRow( $rowDimension->getRowIndex() - 1, $rowDimension->getRowHeight(), $xfIndex, ($rowDimension->getVisible() ? '0' : '1'), $rowDimension->getOutlineLevel() );
                }

                // Write Cells
                foreach ($_phpSheet->getCellCollection() as $cellID) {
                        $cell = $_phpSheet->getCell($cellID);
                        $row = $cell->getRow() - 1;
                        $column = PHPExcel_Cell::columnIndexFromString($cell->getColumn()) - 1;

                        // Don't break Excel!
//                      if ($row + 1 > 65536 or $column + 1 > 256) {
                        if ($row > 65535 || $column > 255) {
                                break;
                        }

                        // Write cell value
                        $xfIndex = $cell->getXfIndex() + 15; // there are 15 cell style Xfs

                        $cVal = $cell->getValue();
                        if ($cVal instanceof PHPExcel_RichText) {
                                // $this->_writeString($row, $column, $cVal->getPlainText(), $xfIndex);
                                $arrcRun = array();
                                $str_len = PHPExcel_Shared_String::CountCharacters($cVal->getPlainText(), 'UTF-8');
                                $str_pos = 0;
                                $elements = $cVal->getRichTextElements();
                                foreach ($elements as $element) {
                                        // FONT Index
                                        if ($element instanceof PHPExcel_RichText_Run) {
                                                $str_fontidx = $this->_fntHashIndex[$element->getFont()->getHashCode()];
                                        }
                                        else {
                                                $str_fontidx = 0;
                                        }
                                        $arrcRun[] = array('strlen' => $str_pos, 'fontidx' => $str_fontidx);
                                        // Position FROM
                                        $str_pos += PHPExcel_Shared_String::CountCharacters($element->getText(), 'UTF-8');
                                }
                                $this->_writeRichTextString($row, $column, $cVal->getPlainText(), $xfIndex, $arrcRun);
                        } else {
                                switch ($cell->getDatatype()) {
                                        case PHPExcel_Cell_DataType::TYPE_STRING:
                                        case PHPExcel_Cell_DataType::TYPE_NULL:
                                                if ($cVal === '' || $cVal === null) {
                                                        $this->_writeBlank($row, $column, $xfIndex);
                                                } else {
                                                        $this->_writeString($row, $column, $cVal, $xfIndex);
                                                }
                                                break;

                                        case PHPExcel_Cell_DataType::TYPE_NUMERIC:
                                                $this->_writeNumber($row, $column, $cVal, $xfIndex);
                                                break;

                                        case PHPExcel_Cell_DataType::TYPE_FORMULA:
                                                $calculatedValue = $this->_preCalculateFormulas ?
                                                        $cell->getCalculatedValue() : null;
                                                $this->_writeFormula($row, $column, $cVal, $xfIndex, $calculatedValue);
                                                break;

                                        case PHPExcel_Cell_DataType::TYPE_BOOL:
                                                $this->_writeBoolErr($row, $column, $cVal, 0, $xfIndex);
                                                break;

                                        case PHPExcel_Cell_DataType::TYPE_ERROR:
                                                $this->_writeBoolErr($row, $column, self::_mapErrorCode($cVal), 1, $xfIndex);
                                                break;

                                }
                        }
                }

                // Append
                $this->_writeMsoDrawing();

                // Write WINDOW2 record
                $this->_writeWindow2();

                // Write PLV record
                $this->_writePageLayoutView();

                // Write ZOOM record
                $this->_writeZoom();
                if ($_phpSheet->getFreezePane()) {
                        $this->_writePanes();
                }

                // Write SELECTION record
                $this->_writeSelection();

                // Write MergedCellsTable Record
                $this->_writeMergedCells();

                // Hyperlinks
                foreach ($_phpSheet->getHyperLinkCollection() as $coordinate => $hyperlink) {
                        list($column, $row) = PHPExcel_Cell::coordinateFromString($coordinate);

                        $url = $hyperlink->getUrl();

                        if ( strpos($url, 'sheet://') !== false ) {
                                // internal to current workbook
                                $url = str_replace('sheet://', 'internal:', $url);

                        } else if ( preg_match('/^(http:|https:|ftp:|mailto:)/', $url) ) {
                                // URL
                                // $url = $url;

                        } else {
                                // external (local file)
                                $url = 'external:' . $url;
                        }

                        $this->_writeUrl($row - 1, PHPExcel_Cell::columnIndexFromString($column) - 1, $url);
                }

                $this->_writeDataValidity();
                $this->_writeSheetLayout();

                // Write SHEETPROTECTION record
                $this->_writeSheetProtection();
                $this->_writeRangeProtection();

                $arrConditionalStyles = $_phpSheet->getConditionalStylesCollection();
                if(!empty($arrConditionalStyles)){
                        $arrConditional = array();
                        // @todo CFRule & CFHeader
                        // Write CFHEADER record
                        $this->_writeCFHeader();
                        // Write ConditionalFormattingTable records
                        foreach ($arrConditionalStyles as $cellCoordinate => $conditionalStyles) {
                                foreach ($conditionalStyles as $conditional) {
                                        if($conditional->getConditionType() == PHPExcel_Style_Conditional::CONDITION_EXPRESSION
                                                || $conditional->getConditionType() == PHPExcel_Style_Conditional::CONDITION_CELLIS){
                                                if(!in_array($conditional->getHashCode(), $arrConditional)){
                                                        $arrConditional[] = $conditional->getHashCode();
                                                        // Write CFRULE record
                                                        $this->_writeCFRule($conditional);
                                                }
                                        }
                                }
                        }
                }

                $this->_storeEof();
        }

        private function _writeBIFF8CellRangeAddressFixed($range = 'A1')
        {
                $explodes = explode(':', $range);

                // extract first cell, e.g. 'A1'
                $firstCell = $explodes[0];

                // extract last cell, e.g. 'B6'
                if (count($explodes) == 1) {
                        $lastCell = $firstCell;
                } else {
                        $lastCell = $explodes[1];
                }

                $firstCellCoordinates = PHPExcel_Cell::coordinateFromString($firstCell); // e.g. array(0, 1)
                $lastCellCoordinates  = PHPExcel_Cell::coordinateFromString($lastCell);  // e.g. array(1, 6)

                return(pack('vvvv',
                        $firstCellCoordinates[1] - 1,
                        $lastCellCoordinates[1] - 1,
                        PHPExcel_Cell::columnIndexFromString($firstCellCoordinates[0]) - 1,
                        PHPExcel_Cell::columnIndexFromString($lastCellCoordinates[0]) - 1
                ));
        }

        function getData()
        {
                $buffer = 4096;

                // Return data stored in memory
                if (isset($this->_data)) {
                        $tmp   = $this->_data;
                        unset($this->_data);
                        return $tmp;
                }
                // No data to return
                return false;
        }

        function printRowColHeaders($print = 1)
        {
                $this->_print_headers = $print;
        }

        function setOutline($visible = true, $symbols_below = true, $symbols_right = true, $auto_style = false)
        {
                $this->_outline_on      = $visible;
                $this->_outline_below = $symbols_below;
                $this->_outline_right = $symbols_right;
                $this->_outline_style = $auto_style;

                // Ensure this is a boolean vale for Window2
                if ($this->_outline_on) {
                        $this->_outline_on = 1;
                }
         }

        private function _writeNumber($row, $col, $num, $xfIndex)
        {
                $record = 0x0203;                                // Record identifier
                $length = 0x000E;                                // Number of bytes to follow

                $header         = pack("vv",  $record, $length);
                $data           = pack("vvv", $row, $col, $xfIndex);
                $xl_double      = pack("d",   $num);
                if (self::getByteOrder()) { // if it's Big Endian
                        $xl_double = strrev($xl_double);
                }

                $this->_append($header.$data.$xl_double);
                return(0);
        }

        private function _writeString($row, $col, $str, $xfIndex)
        {
                $this->_writeLabelSst($row, $col, $str, $xfIndex);
        }

        private function _writeRichTextString($row, $col, $str, $xfIndex, $arrcRun){
                $record = 0x00FD;                                  // Record identifier
                $length = 0x000A;                                  // Bytes to follow
                $str = PHPExcel_Shared_String::UTF8toBIFF8UnicodeShort($str, $arrcRun);

                /* check if string is already present */
                if (!isset($this->_str_table[$str])) {
                        $this->_str_table[$str] = $this->_str_unique++;
                }
                $this->_str_total++;

                $header = pack('vv',   $record, $length);
                $data   = pack('vvvV', $row, $col, $xfIndex, $this->_str_table[$str]);
                $this->_append($header.$data);
        }

        private function _writeLabel($row, $col, $str, $xfIndex)
        {
                $strlen = strlen($str);
                $record = 0x0204;                                  // Record identifier
                $length = 0x0008 + $strlen;              // Bytes to follow

                $str_error = 0;

                if ($strlen > $this->_xls_strmax) { // LABEL must be < 255 chars
                        $str    = substr($str, 0, $this->_xls_strmax);
                        $length = 0x0008 + $this->_xls_strmax;
                        $strlen = $this->_xls_strmax;
                        $str_error = -3;
                }

                $header = pack("vv",   $record, $length);
                $data   = pack("vvvv", $row, $col, $xfIndex, $strlen);
                $this->_append($header . $data . $str);
                return($str_error);
        }

        private function _writeLabelSst($row, $col, $str, $xfIndex)
        {
                $record = 0x00FD;                                  // Record identifier
                $length = 0x000A;                                  // Bytes to follow

                $str = PHPExcel_Shared_String::UTF8toBIFF8UnicodeLong($str);

                /* check if string is already present */
                if (!isset($this->_str_table[$str])) {
                        $this->_str_table[$str] = $this->_str_unique++;
                }
                $this->_str_total++;

                $header = pack('vv',   $record, $length);
                $data   = pack('vvvV', $row, $col, $xfIndex, $this->_str_table[$str]);
                $this->_append($header.$data);
        }

        private function _writeNote($row, $col, $note)
        {
                $note_length    = strlen($note);
                $record                 = 0x001C;                       // Record identifier
                $max_length             = 2048;                         // Maximun length for a NOTE record

                // Length for this record is no more than 2048 + 6
                $length = 0x0006 + min($note_length, 2048);
                $header = pack("vv",   $record, $length);
                $data   = pack("vvv", $row, $col, $note_length);
                $this->_append($header . $data . substr($note, 0, 2048));

                for ($i = $max_length; $i < $note_length; $i += $max_length) {
                        $chunk  = substr($note, $i, $max_length);
                        $length = 0x0006 + strlen($chunk);
                        $header = pack("vv",   $record, $length);
                        $data   = pack("vvv", -1, 0, strlen($chunk));
                        $this->_append($header.$data.$chunk);
                }
                return(0);
        }

        function _writeBlank($row, $col, $xfIndex)
        {
                $record = 0x0201;                                // Record identifier
                $length = 0x0006;                                // Number of bytes to follow

                $header = pack("vv",  $record, $length);
                $data     = pack("vvv", $row, $col, $xfIndex);
                $this->_append($header . $data);
                return 0;
        }

        private function _writeBoolErr($row, $col, $value, $isError, $xfIndex)
        {
                $record = 0x0205;
                $length = 8;

                $header = pack("vv",  $record, $length);
                $data     = pack("vvvCC", $row, $col, $xfIndex, $value, $isError);
                $this->_append($header . $data);
                return 0;
        }

        private function _writeFormula($row, $col, $formula, $xfIndex, $calculatedValue)
        {
                $record = 0x0006;        // Record identifier

                // Initialize possible additional value for STRING record that should be written after the FORMULA record?
                $stringValue = null;

                // calculated value
                if (isset($calculatedValue)) {
                        // Since we can't yet get the data type of the calculated value,
                        // we use best effort to determine data type
                        if (is_bool($calculatedValue)) {
                                // Boolean value
                                $num = pack('CCCvCv', 0x01, 0x00, (int)$calculatedValue, 0x00, 0x00, 0xFFFF);
                        } elseif (is_int($calculatedValue) || is_float($calculatedValue)) {
                                // Numeric value
                                $num = pack('d', $calculatedValue);
                        } elseif (is_string($calculatedValue)) {
                                if (array_key_exists($calculatedValue, PHPExcel_Cell_DataType::getErrorCodes())) {
                                        // Error value
                                        $num = pack('CCCvCv', 0x02, 0x00, self::_mapErrorCode($calculatedValue), 0x00, 0x00, 0xFFFF);
                                } elseif ($calculatedValue === '') {
                                        // Empty string (and BIFF8)
                                        $num = pack('CCCvCv', 0x03, 0x00, 0x00, 0x00, 0x00, 0xFFFF);
                                } else {
                                        // Non-empty string value (or empty string BIFF5)
                                        $stringValue = $calculatedValue;
                                        $num = pack('CCCvCv', 0x00, 0x00, 0x00, 0x00, 0x00, 0xFFFF);
                                }
                        } else {
                                // We are really not supposed to reach here
                                $num = pack('d', 0x00);
                        }
                } else {
                        $num = pack('d', 0x00);
                }

                $grbit          = 0x03;                         // Option flags
                $unknown        = 0x0000;                       // Must be zero

                // Strip the '=' or '@' sign at the beginning of the formula string
                if ($formula{0} == '=') {
                        $formula = substr($formula,1);
                } else {
                        // Error handling
                        $this->_writeString($row, $col, 'Unrecognised character for formula');
                        return -1;
                }

                // Parse the formula using the parser in Parser.php
                try {
                        $error = $this->_parser->parse($formula);
                        $formula = $this->_parser->toReversePolish();

                        $formlen        = strlen($formula);     // Length of the binary string
                        $length  = 0x16 + $formlen;      // Length of the record data

                        $header = pack("vv",      $record, $length);

                        $data     = pack("vvv", $row, $col, $xfIndex)
                                                . $num
                                                . pack("vVv", $grbit, $unknown, $formlen);
                        $this->_append($header . $data . $formula);

                        // Append also a STRING record if necessary
                        if ($stringValue !== null) {
                                $this->_writeStringRecord($stringValue);
                        }

                        return 0;

                } catch (PHPExcel_Exception $e) {
                        // do nothing
                }

        }

        private function _writeStringRecord($stringValue)
        {
                $record = 0x0207;        // Record identifier
                $data = PHPExcel_Shared_String::UTF8toBIFF8UnicodeLong($stringValue);

                $length = strlen($data);
                $header = pack('vv', $record, $length);

                $this->_append($header . $data);
        }

        private function _writeUrl($row, $col, $url)
        {
                // Add start row and col to arg list
                return($this->_writeUrlRange($row, $col, $row, $col, $url));
        }

        function _writeUrlRange($row1, $col1, $row2, $col2, $url)
        {
                // Check for internal/external sheet links or default to web link
                if (preg_match('[^internal:]', $url)) {
                        return($this->_writeUrlInternal($row1, $col1, $row2, $col2, $url));
                }
                if (preg_match('[^external:]', $url)) {
                        return($this->_writeUrlExternal($row1, $col1, $row2, $col2, $url));
                }
                return($this->_writeUrlWeb($row1, $col1, $row2, $col2, $url));
        }

        function _writeUrlWeb($row1, $col1, $row2, $col2, $url)
        {
                $record   = 0x01B8;                                        // Record identifier
                $length   = 0x00000;                                      // Bytes to follow

                // Pack the undocumented parts of the hyperlink stream
                $unknown1       = pack("H*", "D0C9EA79F9BACE118C8200AA004BA90B02000000");
                $unknown2       = pack("H*", "E0C9EA79F9BACE118C8200AA004BA90B");

                // Pack the option flags
                $options         = pack("V", 0x03);

                // Convert URL to a null terminated wchar string
                $url             = join("\0", preg_split("''", $url, -1, PREG_SPLIT_NO_EMPTY));
                $url             = $url . "\0\0\0";

                // Pack the length of the URL
                $url_len         = pack("V", strlen($url));

                // Calculate the data length
                $length   = 0x34 + strlen($url);

                // Pack the header data
                $header   = pack("vv",   $record, $length);
                $data           = pack("vvvv", $row1, $row2, $col1, $col2);

                // Write the packed data
                $this->_append($header . $data .
                                           $unknown1 . $options .
                                           $unknown2 . $url_len . $url);
                return 0;
        }

        function _writeUrlInternal($row1, $col1, $row2, $col2, $url)
        {
                $record   = 0x01B8;                                        // Record identifier
                $length   = 0x00000;                                      // Bytes to follow

                // Strip URL type
                $url = preg_replace('/^internal:/', '', $url);

                // Pack the undocumented parts of the hyperlink stream
                $unknown1       = pack("H*", "D0C9EA79F9BACE118C8200AA004BA90B02000000");

                // Pack the option flags
                $options         = pack("V", 0x08);

                // Convert the URL type and to a null terminated wchar string
                $url .= "\0";

                // character count
                $url_len = PHPExcel_Shared_String::CountCharacters($url);
                $url_len = pack('V', $url_len);

                $url = PHPExcel_Shared_String::ConvertEncoding($url, 'UTF-16LE', 'UTF-8');

                // Calculate the data length
                $length   = 0x24 + strlen($url);

                // Pack the header data
                $header   = pack("vv",   $record, $length);
                $data           = pack("vvvv", $row1, $row2, $col1, $col2);

                // Write the packed data
                $this->_append($header . $data .
                                           $unknown1 . $options .
                                           $url_len . $url);
                return 0;
        }

        function _writeUrlExternal($row1, $col1, $row2, $col2, $url)
        {
                // Network drives are different. We will handle them separately
                // MS/Novell network drives and shares start with \\
                if (preg_match('[^external:\\\\]', $url)) {
                        return; //($this->_writeUrlExternal_net($row1, $col1, $row2, $col2, $url, $str, $format));
                }

                $record   = 0x01B8;                                        // Record identifier
                $length   = 0x00000;                                      // Bytes to follow

                // Strip URL type and change Unix dir separator to Dos style (if needed)
                //
                $url = preg_replace('/^external:/', '', $url);
                $url = preg_replace('/\//', "\\", $url);

                // Determine if the link is relative or absolute:
                //   relative if link contains no dir separator, "somefile.xls"
                //   relative if link starts with up-dir, "..\..\somefile.xls"
                //   otherwise, absolute

                $absolute = 0x00; // relative path
                if ( preg_match('/^[A-Z]:/', $url) ) {
                        $absolute = 0x02; // absolute path on Windows, e.g. C:\...
                }
                $link_type                         = 0x01 | $absolute;

                // Determine if the link contains a sheet reference and change some of the
                // parameters accordingly.
                // Split the dir name and sheet name (if it exists)
                $dir_long = $url;
                if (preg_match("/\#/", $url)) {
                        $link_type |= 0x08;
                }


                // Pack the link type
                $link_type   = pack("V", $link_type);

                // Calculate the up-level dir count e.g.. (..\..\..\ == 3)
                $up_count       = preg_match_all("/\.\.\\\/", $dir_long, $useless);
                $up_count       = pack("v", $up_count);

                // Store the short dos dir name (null terminated)
                $dir_short   = preg_replace("/\.\.\\\/", '', $dir_long) . "\0";

                // Store the long dir name as a wchar string (non-null terminated)
                $dir_long          = $dir_long . "\0";

                // Pack the lengths of the dir strings
                $dir_short_len = pack("V", strlen($dir_short)     );
                $dir_long_len  = pack("V", strlen($dir_long)       );
                $stream_len     = pack("V", 0);//strlen($dir_long) + 0x06);

                // Pack the undocumented parts of the hyperlink stream
                $unknown1 = pack("H*",'D0C9EA79F9BACE118C8200AA004BA90B02000000'           );
                $unknown2 = pack("H*",'0303000000000000C000000000000046'                           );
                $unknown3 = pack("H*",'FFFFADDE000000000000000000000000000000000000000');
                $unknown4 = pack("v",  0x03                                                                                     );

                // Pack the main data stream
                $data           = pack("vvvv", $row1, $row2, $col1, $col2) .
                                                  $unknown1      .
                                                  $link_type    .
                                                  $unknown2      .
                                                  $up_count      .
                                                  $dir_short_len.
                                                  $dir_short    .
                                                  $unknown3      .
                                                  $stream_len   ;/*.
                                                  $dir_long_len .
                                                  $unknown4      .
                                                  $dir_long      .
                                                  $sheet_len    .
                                                  $sheet                ;*/

                // Pack the header data
                $length   = strlen($data);
                $header   = pack("vv", $record, $length);

                // Write the packed data
                $this->_append($header. $data);
                return 0;
        }

        private function _writeRow($row, $height, $xfIndex, $hidden = false, $level = 0)
        {
                $record   = 0x0208;                        // Record identifier
                $length   = 0x0010;                        // Number of bytes to follow

                $colMic   = 0x0000;                        // First defined column
                $colMac   = 0x0000;                        // Last defined column
                $irwMac   = 0x0000;                        // Used by Excel to optimise loading
                $reserved       = 0x0000;                          // Reserved
                $grbit     = 0x0000;                       // Option flags
                $ixfe           = $xfIndex;

                if ( $height < 0 ){
                        $height = null;
                }

                // Use _writeRow($row, null, $XF) to set XF format without setting height
                if ($height != null) {
                        $miyRw = $height * 20;  // row height
                } else {
                        $miyRw = 0xff;            // default row height is 256
                }

                // Set the options flags. fUnsynced is used to show that the font and row
                // heights are not compatible. This is usually the case for WriteExcel.
                // The collapsed flag 0x10 doesn't seem to be used to indicate that a row
                // is collapsed. Instead it is used to indicate that the previous row is
                // collapsed. The zero height flag, 0x20, is used to collapse a row.

                $grbit |= $level;
                if ($hidden) {
                        $grbit |= 0x0030;
                }
                if ($height !== null) {
                        $grbit |= 0x0040; // fUnsynced
                }
                if ($xfIndex !== 0xF) {
                        $grbit |= 0x0080;
                }
                $grbit |= 0x0100;

                $header   = pack("vv",     $record, $length);
                $data    = pack("vvvvvvvv", $row, $colMic, $colMac, $miyRw,
                                                                         $irwMac,$reserved, $grbit, $ixfe);
                $this->_append($header.$data);
        }

        private function _writeDimensions()
        {
                $record = 0x0200; // Record identifier

                $length = 0x000E;
                $data = pack('VVvvv'
                                , $this->_firstRowIndex
                                , $this->_lastRowIndex + 1
                                , $this->_firstColumnIndex
                                , $this->_lastColumnIndex + 1
                                , 0x0000 // reserved
                        );

                $header = pack("vv", $record, $length);
                $this->_append($header.$data);
        }

        private function _writeWindow2()
        {
                $record          = 0x023E;       // Record identifier
                $length          = 0x0012;

                $grbit            = 0x00B6;      // Option flags
                $rwTop            = 0x0000;      // Top row visible in window
                $colLeft                = 0x0000;        // Leftmost column visible in window


                // The options flags that comprise $grbit
                $fDspFmla          = 0;                                  // 0 - bit
                $fDspGrid          = $this->_phpSheet->getShowGridlines() ? 1 : 0; // 1
                $fDspRwCol        = $this->_phpSheet->getShowRowColHeaders() ? 1 : 0; // 2
                $fFrozen                = $this->_phpSheet->getFreezePane() ? 1 : 0;            // 3
                $fDspZeros        = 1;                                   // 4
                $fDefaultHdr    = 1;                                     // 5
                $fArabic                = $this->_phpSheet->getRightToLeft() ? 1 : 0; // 6
                $fDspGuts          = $this->_outline_on;        // 7
                $fFrozenNoSplit = 0;                                     // 0 - bit
                // no support in PHPExcel for selected sheet, therefore sheet is only selected if it is the active sheet
                $fSelected        = ($this->_phpSheet === $this->_phpSheet->getParent()->getActiveSheet()) ? 1 : 0;
                $fPaged          = 1;                                    // 2
                $fPageBreakPreview = $this->_phpSheet->getSheetView()->getView() === PHPExcel_Worksheet_SheetView::SHEETVIEW_PAGE_BREAK_PREVIEW;

                $grbit                   = $fDspFmla;
                $grbit                  |= $fDspGrid       << 1;
                $grbit                  |= $fDspRwCol      << 2;
                $grbit                  |= $fFrozen                << 3;
                $grbit                  |= $fDspZeros      << 4;
                $grbit                  |= $fDefaultHdr    << 5;
                $grbit                  |= $fArabic                << 6;
                $grbit                  |= $fDspGuts       << 7;
                $grbit                  |= $fFrozenNoSplit << 8;
                $grbit                  |= $fSelected      << 9;
                $grbit                  |= $fPaged                 << 10;
                $grbit                  |= $fPageBreakPreview << 11;

                $header  = pack("vv",   $record, $length);
                $data   = pack("vvv", $grbit, $rwTop, $colLeft);

                // FIXME !!!
                $rgbHdr    = 0x0040; // Row/column heading and gridline color index
                $zoom_factor_page_break = ($fPageBreakPreview? $this->_phpSheet->getSheetView()->getZoomScale() : 0x0000);
                $zoom_factor_normal =  $this->_phpSheet->getSheetView()->getZoomScaleNormal();

                $data .= pack("vvvvV", $rgbHdr, 0x0000, $zoom_factor_page_break, $zoom_factor_normal, 0x00000000);

                $this->_append($header.$data);
        }

        private function _writeDefaultRowHeight()
        {
                $defaultRowHeight = $this->_phpSheet->getDefaultRowDimension()->getRowHeight();

                if ($defaultRowHeight < 0) {
                        return;
                }

                // convert to twips
                $defaultRowHeight = (int) 20 * $defaultRowHeight;

                $record   = 0x0225;       // Record identifier
                $length   = 0x0004;       // Number of bytes to follow

                $header   = pack("vv", $record, $length);
                $data    = pack("vv",  1, $defaultRowHeight);
                $this->_append($header . $data);
        }

        private function _writeDefcol()
        {
                $defaultColWidth = 8;

                $record   = 0x0055;       // Record identifier
                $length   = 0x0002;       // Number of bytes to follow

                $header = pack("vv", $record, $length);
                $data = pack("v", $defaultColWidth);
                $this->_append($header . $data);
        }

        private function _writeColinfo($col_array)
        {
                if (isset($col_array[0])) {
                        $colFirst = $col_array[0];
                }
                if (isset($col_array[1])) {
                        $colLast = $col_array[1];
                }
                if (isset($col_array[2])) {
                        $coldx = $col_array[2];
                } else {
                        $coldx = 8.43;
                }
                if (isset($col_array[3])) {
                        $xfIndex = $col_array[3];
                } else {
                        $xfIndex = 15;
                }
                if (isset($col_array[4])) {
                        $grbit = $col_array[4];
                } else {
                        $grbit = 0;
                }
                if (isset($col_array[5])) {
                        $level = $col_array[5];
                } else {
                        $level = 0;
                }
                $record   = 0x007D;               // Record identifier
                $length   = 0x000C;               // Number of bytes to follow

                $coldx   *= 256;                         // Convert to units of 1/256 of a char

                $ixfe    = $xfIndex;
                $reserved = 0x0000;                     // Reserved

                $level = max(0, min($level, 7));
                $grbit |= $level << 8;

                $header   = pack("vv",   $record, $length);
                $data    = pack("vvvvvv", $colFirst, $colLast, $coldx,
                                                                   $ixfe, $grbit, $reserved);
                $this->_append($header.$data);
        }

        private function _writeSelection()
        {
                // look up the selected cell range
                $selectedCells = $this->_phpSheet->getSelectedCells();
                $selectedCells = PHPExcel_Cell::splitRange($this->_phpSheet->getSelectedCells());
                $selectedCells = $selectedCells[0];
                if (count($selectedCells) == 2) {
                        list($first, $last) = $selectedCells;
                } else {
                        $first = $selectedCells[0];
                        $last  = $selectedCells[0];
                }

                list($colFirst, $rwFirst) = PHPExcel_Cell::coordinateFromString($first);
                $colFirst = PHPExcel_Cell::columnIndexFromString($colFirst) - 1; // base 0 column index
                --$rwFirst; // base 0 row index

                list($colLast, $rwLast) = PHPExcel_Cell::coordinateFromString($last);
                $colLast = PHPExcel_Cell::columnIndexFromString($colLast) - 1; // base 0 column index
                --$rwLast; // base 0 row index

                // make sure we are not out of bounds
                $colFirst = min($colFirst, 255);
                $colLast  = min($colLast,  255);

                $rwFirst = min($rwFirst, 65535);
                $rwLast  = min($rwLast,  65535);

                $record   = 0x001D;                               // Record identifier
                $length   = 0x000F;                               // Number of bytes to follow

                $pnn      = $this->_active_pane;         // Pane position
                $rwAct  = $rwFirst;                             // Active row
                $colAct   = $colFirst;                     // Active column
                $irefAct  = 0;                                     // Active cell ref
                $cref    = 1;                                      // Number of refs

                if (!isset($rwLast)) {
                        $rwLast   = $rwFirst;      // Last  row in reference
                }
                if (!isset($colLast)) {
                        $colLast  = $colFirst;    // Last  col in reference
                }

                // Swap last row/col for first row/col as necessary
                if ($rwFirst > $rwLast) {
                        list($rwFirst, $rwLast) = array($rwLast, $rwFirst);
                }

                if ($colFirst > $colLast) {
                        list($colFirst, $colLast) = array($colLast, $colFirst);
                }

                $header   = pack("vv",           $record, $length);
                $data    = pack("CvvvvvvCC",  $pnn, $rwAct, $colAct,
                                                                           $irefAct, $cref,
                                                                           $rwFirst, $rwLast,
                                                                           $colFirst, $colLast);
                $this->_append($header . $data);
        }

        private function _writeMergedCells()
        {
                $mergeCells = $this->_phpSheet->getMergeCells();
                $countMergeCells = count($mergeCells);

                if ($countMergeCells == 0) {
                        return;
                }

                // maximum allowed number of merged cells per record
                $maxCountMergeCellsPerRecord = 1027;

                // record identifier
                $record = 0x00E5;

                // counter for total number of merged cells treated so far by the writer
                $i = 0;

                // counter for number of merged cells written in record currently being written
                $j = 0;

                // initialize record data
                $recordData = '';

                // loop through the merged cells
                foreach ($mergeCells as $mergeCell) {
                        ++$i;
                        ++$j;

                        // extract the row and column indexes
                        $range = PHPExcel_Cell::splitRange($mergeCell);
                        list($first, $last) = $range[0];
                        list($firstColumn, $firstRow) = PHPExcel_Cell::coordinateFromString($first);
                        list($lastColumn, $lastRow) = PHPExcel_Cell::coordinateFromString($last);

                        $recordData .= pack('vvvv', $firstRow - 1, $lastRow - 1, PHPExcel_Cell::columnIndexFromString($firstColumn) - 1, PHPExcel_Cell::columnIndexFromString($lastColumn) - 1);

                        // flush record if we have reached limit for number of merged cells, or reached final merged cell
                        if ($j == $maxCountMergeCellsPerRecord or $i == $countMergeCells) {
                                $recordData = pack('v', $j) . $recordData;
                                $length = strlen($recordData);
                                $header = pack('vv', $record, $length);
                                $this->_append($header . $recordData);

                                // initialize for next record, if any
                                $recordData = '';
                                $j = 0;
                        }
                }
        }

        private function _writeSheetLayout()
        {
                if (!$this->_phpSheet->isTabColorSet()) {
                        return;
                }

                $recordData = pack(
                        'vvVVVvv'
                        , 0x0862
                        , 0x0000                // unused
                        , 0x00000000    // unused
                        , 0x00000000    // unused
                        , 0x00000014    // size of record data
                        , $this->_colors[$this->_phpSheet->getTabColor()->getRGB()]     // color index
                        , 0x0000                // unused
                );

                $length = strlen($recordData);

                $record = 0x0862; // Record identifier
                $header = pack('vv', $record, $length);
                $this->_append($header . $recordData);
        }

        private function _writeSheetProtection()
        {
                // record identifier
                $record = 0x0867;

                // prepare options
                $options  =   (int) !$this->_phpSheet->getProtection()->getObjects()
                                        | (int) !$this->_phpSheet->getProtection()->getScenarios()           << 1
                                        | (int) !$this->_phpSheet->getProtection()->getFormatCells()         << 2
                                        | (int) !$this->_phpSheet->getProtection()->getFormatColumns()       << 3
                                        | (int) !$this->_phpSheet->getProtection()->getFormatRows()          << 4
                                        | (int) !$this->_phpSheet->getProtection()->getInsertColumns()       << 5
                                        | (int) !$this->_phpSheet->getProtection()->getInsertRows()          << 6
                                        | (int) !$this->_phpSheet->getProtection()->getInsertHyperlinks()    << 7
                                        | (int) !$this->_phpSheet->getProtection()->getDeleteColumns()       << 8
                                        | (int) !$this->_phpSheet->getProtection()->getDeleteRows()          << 9
                                        | (int) !$this->_phpSheet->getProtection()->getSelectLockedCells()   << 10
                                        | (int) !$this->_phpSheet->getProtection()->getSort()                << 11
                                        | (int) !$this->_phpSheet->getProtection()->getAutoFilter()          << 12
                                        | (int) !$this->_phpSheet->getProtection()->getPivotTables()         << 13
                                        | (int) !$this->_phpSheet->getProtection()->getSelectUnlockedCells() << 14 ;

                // record data
                $recordData = pack(
                        'vVVCVVvv'
                        , 0x0867                // repeated record identifier
                        , 0x0000                // not used
                        , 0x0000                // not used
                        , 0x00                  // not used
                        , 0x01000200    // unknown data
                        , 0xFFFFFFFF    // unknown data
                        , $options              // options
                        , 0x0000                // not used
                );

                $length = strlen($recordData);
                $header = pack('vv', $record, $length);

                $this->_append($header . $recordData);
        }

        private function _writeRangeProtection()
        {
                foreach ($this->_phpSheet->getProtectedCells() as $range => $password) {
                        // number of ranges, e.g. 'A1:B3 C20:D25'
                        $cellRanges = explode(' ', $range);
                        $cref = count($cellRanges);

                        $recordData = pack(
                                'vvVVvCVvVv',
                                0x0868,
                                0x00,
                                0x0000,
                                0x0000,
                                0x02,
                                0x0,
                                0x0000,
                                $cref,
                                0x0000,
                                0x00
                        );

                        foreach ($cellRanges as $cellRange) {
                                $recordData .= $this->_writeBIFF8CellRangeAddressFixed($cellRange);
                        }

                        // the rgbFeat structure
                        $recordData .= pack(
                                'VV',
                                0x0000,
                                hexdec($password)
                        );

                        $recordData .= PHPExcel_Shared_String::UTF8toBIFF8UnicodeLong('p' . md5($recordData));

                        $length = strlen($recordData);

                        $record = 0x0868;               // Record identifier
                        $header = pack("vv", $record, $length);
                        $this->_append($header . $recordData);
                }
        }

        private function _writeExterncount($count)
        {
                $record = 0x0016;                 // Record identifier
                $length = 0x0002;                 // Number of bytes to follow

                $header = pack("vv", $record, $length);
                $data   = pack("v",  $count);
                $this->_append($header . $data);
        }

        private function _writeExternsheet($sheetname)
        {
                $record = 0x0017;                // Record identifier

                // References to the current sheet are encoded differently to references to
                // external sheets.
                //
                if ($this->_phpSheet->getTitle() == $sheetname) {
                        $sheetname = '';
                        $length = 0x02;  // The following 2 bytes
                        $cch       = 1;  // The following byte
                        $rgch     = 0x02;  // Self reference
                } else {
                        $length = 0x02 + strlen($sheetname);
                        $cch       = strlen($sheetname);
                        $rgch     = 0x03;  // Reference to a sheet in the current workbook
                }

                $header = pack("vv",  $record, $length);
                $data   = pack("CC", $cch, $rgch);
                $this->_append($header . $data . $sheetname);
        }

        private function _writePanes()
        {
                $panes = array();
                if ($freezePane = $this->_phpSheet->getFreezePane()) {
                        list($column, $row) = PHPExcel_Cell::coordinateFromString($freezePane);
                        $panes[0] = $row - 1;
                        $panes[1] = PHPExcel_Cell::columnIndexFromString($column) - 1;
                } else {
                        // thaw panes
                        return;
                }

                $y         = isset($panes[0]) ? $panes[0] : null;
                $x         = isset($panes[1]) ? $panes[1] : null;
                $rwTop   = isset($panes[2]) ? $panes[2] : null;
                $colLeft = isset($panes[3]) ? $panes[3] : null;
                if (count($panes) > 4) { // if Active pane was received
                        $pnnAct = $panes[4];
                } else {
                        $pnnAct = null;
                }
                $record  = 0x0041;         // Record identifier
                $length  = 0x000A;         // Number of bytes to follow

                // Code specific to frozen or thawed panes.
                if ($this->_phpSheet->getFreezePane()) {
                        // Set default values for $rwTop and $colLeft
                        if (!isset($rwTop)) {
                                $rwTop   = $y;
                        }
                        if (!isset($colLeft)) {
                                $colLeft = $x;
                        }
                } else {
                        // Set default values for $rwTop and $colLeft
                        if (!isset($rwTop)) {
                                $rwTop   = 0;
                        }
                        if (!isset($colLeft)) {
                                $colLeft = 0;
                        }

                        // Convert Excel's row and column units to the internal units.
                        // The default row height is 12.75
                        // The default column width is 8.43
                        // The following slope and intersection values were interpolated.
                        //
                        $y = 20*$y + 255;
                        $x = 113.879*$x + 390;
                }


                // Determine which pane should be active. There is also the undocumented
                // option to override this should it be necessary: may be removed later.
                //
                if (!isset($pnnAct)) {
                        if ($x != 0 && $y != 0) {
                                $pnnAct = 0; // Bottom right
                        }
                        if ($x != 0 && $y == 0) {
                                $pnnAct = 1; // Top right
                        }
                        if ($x == 0 && $y != 0) {
                                $pnnAct = 2; // Bottom left
                        }
                        if ($x == 0 && $y == 0) {
                                $pnnAct = 3; // Top left
                        }
                }

                $this->_active_pane = $pnnAct; // Used in _writeSelection

                $header  = pack("vv",   $record, $length);
                $data      = pack("vvvvv", $x, $y, $rwTop, $colLeft, $pnnAct);
                $this->_append($header . $data);
        }

        private function _writeSetup()
        {
                $record    = 0x00A1;                              // Record identifier
                $length    = 0x0022;                              // Number of bytes to follow

                $iPaperSize   = $this->_phpSheet->getPageSetup()->getPaperSize();       // Paper size

                $iScale = $this->_phpSheet->getPageSetup()->getScale() ?
                        $this->_phpSheet->getPageSetup()->getScale() : 100;   // Print scaling factor

                $iPageStart   = 0x01;                            // Starting page number
                $iFitWidth      = (int) $this->_phpSheet->getPageSetup()->getFitToWidth();      // Fit to number of pages wide
                $iFitHeight     = (int) $this->_phpSheet->getPageSetup()->getFitToHeight();     // Fit to number of pages high
                $grbit          = 0x00;                          // Option flags
                $iRes            = 0x0258;                         // Print resolution
                $iVRes          = 0x0258;                          // Vertical print resolution

                $numHdr    = $this->_phpSheet->getPageMargins()->getHeader();  // Header Margin

                $numFtr    = $this->_phpSheet->getPageMargins()->getFooter();   // Footer Margin
                $iCopies          = 0x01;                                // Number of copies

                $fLeftToRight = 0x0;                                     // Print over then down

                // Page orientation
                $fLandscape = ($this->_phpSheet->getPageSetup()->getOrientation() == PHPExcel_Worksheet_PageSetup::ORIENTATION_LANDSCAPE) ?
                        0x0 : 0x1;

                $fNoPls    = 0x0;                                        // Setup not read from printer
                $fNoColor        = 0x0;                                  // Print black and white
                $fDraft    = 0x0;                                        // Print draft quality
                $fNotes    = 0x0;                                        // Print notes
                $fNoOrient      = 0x0;                                   // Orientation not set
                $fUsePage        = 0x0;                                  // Use custom starting page

                $grbit             = $fLeftToRight;
                $grbit            |= $fLandscape        << 1;
                $grbit            |= $fNoPls            << 2;
                $grbit            |= $fNoColor    << 3;
                $grbit            |= $fDraft            << 4;
                $grbit            |= $fNotes            << 5;
                $grbit            |= $fNoOrient  << 6;
                $grbit            |= $fUsePage    << 7;

                $numHdr = pack("d", $numHdr);
                $numFtr = pack("d", $numFtr);
                if (self::getByteOrder()) { // if it's Big Endian
                        $numHdr = strrev($numHdr);
                        $numFtr = strrev($numFtr);
                }

                $header = pack("vv", $record, $length);
                $data1  = pack("vvvvvvvv", $iPaperSize,
                                                                   $iScale,
                                                                   $iPageStart,
                                                                   $iFitWidth,
                                                                   $iFitHeight,
                                                                   $grbit,
                                                                   $iRes,
                                                                   $iVRes);
                $data2  = $numHdr.$numFtr;
                $data3  = pack("v", $iCopies);
                $this->_append($header . $data1 . $data2 . $data3);
        }

        private function _writeHeader()
        {
                $record  = 0x0014;                         // Record identifier

                /* removing for now
                // need to fix character count (multibyte!)
                if (strlen($this->_phpSheet->getHeaderFooter()->getOddHeader()) <= 255) {
                        $str      = $this->_phpSheet->getHeaderFooter()->getOddHeader();           // header string
                } else {
                        $str = '';
                }
                */

                $recordData = PHPExcel_Shared_String::UTF8toBIFF8UnicodeLong($this->_phpSheet->getHeaderFooter()->getOddHeader());
                $length = strlen($recordData);

                $header   = pack("vv", $record, $length);

                $this->_append($header . $recordData);
        }

        private function _writeFooter()
        {
                $record  = 0x0015;                         // Record identifier

                /* removing for now
                // need to fix character count (multibyte!)
                if (strlen($this->_phpSheet->getHeaderFooter()->getOddFooter()) <= 255) {
                        $str = $this->_phpSheet->getHeaderFooter()->getOddFooter();
                } else {
                        $str = '';
                }
                */

                $recordData = PHPExcel_Shared_String::UTF8toBIFF8UnicodeLong($this->_phpSheet->getHeaderFooter()->getOddFooter());
                $length = strlen($recordData);

                $header = pack("vv", $record, $length);

                $this->_append($header . $recordData);
        }

        private function _writeHcenter()
        {
                $record   = 0x0083;                       // Record identifier
                $length   = 0x0002;                       // Bytes to follow

                $fHCenter = $this->_phpSheet->getPageSetup()->getHorizontalCentered() ? 1 : 0;   // Horizontal centering

                $header = pack("vv", $record, $length);
                $data     = pack("v",  $fHCenter);

                $this->_append($header.$data);
        }

        private function _writeVcenter()
        {
                $record   = 0x0084;                       // Record identifier
                $length   = 0x0002;                       // Bytes to follow

                $fVCenter = $this->_phpSheet->getPageSetup()->getVerticalCentered() ? 1 : 0;     // Horizontal centering

                $header = pack("vv", $record, $length);
                $data     = pack("v",  $fVCenter);
                $this->_append($header . $data);
        }

        private function _writeMarginLeft()
        {
                $record  = 0x0026;                                 // Record identifier
                $length  = 0x0008;                                 // Bytes to follow

                $margin  = $this->_phpSheet->getPageMargins()->getLeft();        // Margin in inches

                $header = pack("vv",  $record, $length);
                $data     = pack("d",   $margin);
                if (self::getByteOrder()) { // if it's Big Endian
                        $data = strrev($data);
                }

                $this->_append($header . $data);
        }

        private function _writeMarginRight()
        {
                $record  = 0x0027;                                 // Record identifier
                $length  = 0x0008;                                 // Bytes to follow

                $margin  = $this->_phpSheet->getPageMargins()->getRight();       // Margin in inches

                $header = pack("vv",  $record, $length);
                $data     = pack("d",   $margin);
                if (self::getByteOrder()) { // if it's Big Endian
                        $data = strrev($data);
                }

                $this->_append($header . $data);
        }

        private function _writeMarginTop()
        {
                $record  = 0x0028;                                 // Record identifier
                $length  = 0x0008;                                 // Bytes to follow

                $margin  = $this->_phpSheet->getPageMargins()->getTop();         // Margin in inches

                $header = pack("vv",  $record, $length);
                $data     = pack("d",   $margin);
                if (self::getByteOrder()) { // if it's Big Endian
                        $data = strrev($data);
                }

                $this->_append($header . $data);
        }

        private function _writeMarginBottom()
        {
                $record  = 0x0029;                                 // Record identifier
                $length  = 0x0008;                                 // Bytes to follow

                $margin  = $this->_phpSheet->getPageMargins()->getBottom();      // Margin in inches

                $header = pack("vv",  $record, $length);
                $data     = pack("d",   $margin);
                if (self::getByteOrder()) { // if it's Big Endian
                        $data = strrev($data);
                }

                $this->_append($header . $data);
        }

        private function _writePrintHeaders()
        {
                $record   = 0x002a;                                // Record identifier
                $length   = 0x0002;                                // Bytes to follow

                $fPrintRwCol = $this->_print_headers;    // Boolean flag

                $header   = pack("vv", $record, $length);
                $data           = pack("v", $fPrintRwCol);
                $this->_append($header . $data);
        }

        private function _writePrintGridlines()
        {
                $record   = 0x002b;                                     // Record identifier
                $length   = 0x0002;                                     // Bytes to follow

                $fPrintGrid  = $this->_phpSheet->getPrintGridlines() ? 1 : 0;   // Boolean flag

                $header   = pack("vv", $record, $length);
                $data     = pack("v", $fPrintGrid);
                $this->_append($header . $data);
        }

        private function _writeGridset()
        {
                $record   = 0x0082;                                             // Record identifier
                $length   = 0x0002;                                             // Bytes to follow

                $fGridSet       = !$this->_phpSheet->getPrintGridlines();        // Boolean flag

                $header   = pack("vv",  $record, $length);
                $data           = pack("v",   $fGridSet);
                $this->_append($header . $data);
        }

        private function _writeAutoFilterInfo(){
                $record   = 0x009D;                                             // Record identifier
                $length   = 0x0002;                                             // Bytes to follow

                $rangeBounds = PHPExcel_Cell::rangeBoundaries($this->_phpSheet->getAutoFilter()->getRange());
                $iNumFilters = 1 + $rangeBounds[1][0] - $rangeBounds[0][0];

                $header   = pack("vv", $record, $length);
                $data     = pack("v",  $iNumFilters);
                $this->_append($header . $data);
        }

        private  function _writeGuts()
        {
                $record   = 0x0080;   // Record identifier
                $length   = 0x0008;   // Bytes to follow

                $dxRwGut         = 0x0000;   // Size of row gutter
                $dxColGut       = 0x0000;   // Size of col gutter

                // determine maximum row outline level
                $maxRowOutlineLevel = 0;
                foreach ($this->_phpSheet->getRowDimensions() as $rowDimension) {
                        $maxRowOutlineLevel = max($maxRowOutlineLevel, $rowDimension->getOutlineLevel());
                }

                $col_level   = 0;

                // Calculate the maximum column outline level. The equivalent calculation
                // for the row outline level is carried out in _writeRow().
                $colcount = count($this->_colinfo);
                for ($i = 0; $i < $colcount; ++$i) {
                        $col_level = max($this->_colinfo[$i][5], $col_level);
                }

                // Set the limits for the outline levels (0 <= x <= 7).
                $col_level = max(0, min($col_level, 7));

                // The displayed level is one greater than the max outline levels
                if ($maxRowOutlineLevel) {
                        ++$maxRowOutlineLevel;
                }
                if ($col_level) {
                        ++$col_level;
                }

                $header   = pack("vv",   $record, $length);
                $data           = pack("vvvv", $dxRwGut, $dxColGut, $maxRowOutlineLevel, $col_level);

                $this->_append($header.$data);
        }

        private function _writeWsbool()
        {
                $record   = 0x0081;   // Record identifier
                $length   = 0x0002;   // Bytes to follow
                $grbit     = 0x0000;

                // The only option that is of interest is the flag for fit to page. So we
                // set all the options in one go.
                //
                // Set the option flags
                $grbit |= 0x0001;                                                  // Auto page breaks visible
                if ($this->_outline_style) {
                        $grbit |= 0x0020; // Auto outline styles
                }
                if ($this->_phpSheet->getShowSummaryBelow()) {
                        $grbit |= 0x0040; // Outline summary below
                }
                if ($this->_phpSheet->getShowSummaryRight()) {
                        $grbit |= 0x0080; // Outline summary right
                }
                if ($this->_phpSheet->getPageSetup()->getFitToPage()) {
                        $grbit |= 0x0100; // Page setup fit to page
                }
                if ($this->_outline_on) {
                        $grbit |= 0x0400; // Outline symbols displayed
                }

                $header   = pack("vv", $record, $length);
                $data           = pack("v",  $grbit);
                $this->_append($header . $data);
        }

        private function _writeBreaks()
        {
                // initialize
                $vbreaks = array();
                $hbreaks = array();

                foreach ($this->_phpSheet->getBreaks() as $cell => $breakType) {
                        // Fetch coordinates
                        $coordinates = PHPExcel_Cell::coordinateFromString($cell);

                        // Decide what to do by the type of break
                        switch ($breakType) {
                                case PHPExcel_Worksheet::BREAK_COLUMN:
                                        // Add to list of vertical breaks
                                        $vbreaks[] = PHPExcel_Cell::columnIndexFromString($coordinates[0]) - 1;
                                        break;

                                case PHPExcel_Worksheet::BREAK_ROW:
                                        // Add to list of horizontal breaks
                                        $hbreaks[] = $coordinates[1];
                                        break;

                                case PHPExcel_Worksheet::BREAK_NONE:
                                default:
                                        // Nothing to do
                                        break;
                        }
                }

                //horizontal page breaks
                if (!empty($hbreaks)) {

                        // Sort and filter array of page breaks
                        sort($hbreaks, SORT_NUMERIC);
                        if ($hbreaks[0] == 0) { // don't use first break if it's 0
                                array_shift($hbreaks);
                        }

                        $record  = 0x001b;                         // Record identifier
                        $cbrk   = count($hbreaks);         // Number of page breaks
                        $length  = 2 + 6 * $cbrk;         // Bytes to follow

                        $header  = pack("vv", $record, $length);
                        $data   = pack("v",  $cbrk);

                        // Append each page break
                        foreach ($hbreaks as $hbreak) {
                                $data .= pack("vvv", $hbreak, 0x0000, 0x00ff);
                        }

                        $this->_append($header . $data);
                }

                // vertical page breaks
                if (!empty($vbreaks)) {

                        // 1000 vertical pagebreaks appears to be an internal Excel 5 limit.
                        // It is slightly higher in Excel 97/200, approx. 1026
                        $vbreaks = array_slice($vbreaks, 0, 1000);

                        // Sort and filter array of page breaks
                        sort($vbreaks, SORT_NUMERIC);
                        if ($vbreaks[0] == 0) { // don't use first break if it's 0
                                array_shift($vbreaks);
                        }

                        $record  = 0x001a;                         // Record identifier
                        $cbrk   = count($vbreaks);         // Number of page breaks
                        $length  = 2 + 6 * $cbrk;         // Bytes to follow

                        $header  = pack("vv",  $record, $length);
                        $data   = pack("v",   $cbrk);

                        // Append each page break
                        foreach ($vbreaks as $vbreak) {
                                $data .= pack("vvv", $vbreak, 0x0000, 0xffff);
                        }

                        $this->_append($header . $data);
                }
        }

        private function _writeProtect()
        {
                // Exit unless sheet protection has been specified
                if (!$this->_phpSheet->getProtection()->getSheet()) {
                        return;
                }

                $record   = 0x0012;                      // Record identifier
                $length   = 0x0002;                      // Bytes to follow

                $fLock    = 1;  // Worksheet is protected

                $header   = pack("vv", $record, $length);
                $data     = pack("v",  $fLock);

                $this->_append($header.$data);
        }

        private function _writeScenProtect()
        {
                // Exit if sheet protection is not active
                if (!$this->_phpSheet->getProtection()->getSheet()) {
                        return;
                }

                // Exit if scenarios are not protected
                if (!$this->_phpSheet->getProtection()->getScenarios()) {
                        return;
                }

                $record = 0x00DD; // Record identifier
                $length = 0x0002; // Bytes to follow

                $header = pack('vv', $record, $length);
                $data = pack('v', 1);

                $this->_append($header . $data);
        }

        private function _writeObjectProtect()
        {
                // Exit if sheet protection is not active
                if (!$this->_phpSheet->getProtection()->getSheet()) {
                        return;
                }

                // Exit if objects are not protected
                if (!$this->_phpSheet->getProtection()->getObjects()) {
                        return;
                }

                $record = 0x0063; // Record identifier
                $length = 0x0002; // Bytes to follow

                $header = pack('vv', $record, $length);
                $data = pack('v', 1);

                $this->_append($header . $data);
        }

        private function _writePassword()
        {
                // Exit unless sheet protection and password have been specified
                if (!$this->_phpSheet->getProtection()->getSheet() || !$this->_phpSheet->getProtection()->getPassword()) {
                        return;
                }

                $record   = 0x0013;                        // Record identifier
                $length   = 0x0002;                        // Bytes to follow

                $wPassword   = hexdec($this->_phpSheet->getProtection()->getPassword());         // Encoded password

                $header   = pack("vv", $record, $length);
                $data           = pack("v",  $wPassword);

                $this->_append($header . $data);
        }

        function insertBitmap($row, $col, $bitmap, $x = 0, $y = 0, $scale_x = 1, $scale_y = 1)
        {
                $bitmap_array = (is_resource($bitmap) ? $this->_processBitmapGd($bitmap) : $this->_processBitmap($bitmap));
                list($width, $height, $size, $data) = $bitmap_array; //$this->_processBitmap($bitmap);

                // Scale the frame of the image.
                $width  *= $scale_x;
                $height *= $scale_y;

                // Calculate the vertices of the image and write the OBJ record
                $this->_positionImage($col, $row, $x, $y, $width, $height);

                // Write the IMDATA record to store the bitmap data
                $record   = 0x007f;
                $length   = 8 + $size;
                $cf               = 0x09;
                $env             = 0x01;
                $lcb             = $size;

                $header   = pack("vvvvV", $record, $length, $cf, $env, $lcb);
                $this->_append($header.$data);
        }

        function _positionImage($col_start, $row_start, $x1, $y1, $width, $height)
        {
                // Initialise end cell to the same as the start cell
                $col_end        = $col_start;  // Col containing lower right corner of object
                $row_end        = $row_start;  // Row containing bottom right corner of object

                // Zero the specified offset if greater than the cell dimensions
                if ($x1 >= PHPExcel_Shared_Excel5::sizeCol($this->_phpSheet, PHPExcel_Cell::stringFromColumnIndex($col_start))) {
                        $x1 = 0;
                }
                if ($y1 >= PHPExcel_Shared_Excel5::sizeRow($this->_phpSheet, $row_start + 1)) {
                        $y1 = 0;
                }

                $width    = $width  + $x1 -1;
                $height  = $height + $y1 -1;

                // Subtract the underlying cell widths to find the end cell of the image
                while ($width >= PHPExcel_Shared_Excel5::sizeCol($this->_phpSheet, PHPExcel_Cell::stringFromColumnIndex($col_end))) {
                        $width -= PHPExcel_Shared_Excel5::sizeCol($this->_phpSheet, PHPExcel_Cell::stringFromColumnIndex($col_end));
                        ++$col_end;
                }

                // Subtract the underlying cell heights to find the end cell of the image
                while ($height >= PHPExcel_Shared_Excel5::sizeRow($this->_phpSheet, $row_end + 1)) {
                        $height -= PHPExcel_Shared_Excel5::sizeRow($this->_phpSheet, $row_end + 1);
                        ++$row_end;
                }

                // Bitmap isn't allowed to start or finish in a hidden cell, i.e. a cell
                // with zero eight or width.
                //
                if (PHPExcel_Shared_Excel5::sizeCol($this->_phpSheet, PHPExcel_Cell::stringFromColumnIndex($col_start)) == 0) {
                        return;
                }
                if (PHPExcel_Shared_Excel5::sizeCol($this->_phpSheet, PHPExcel_Cell::stringFromColumnIndex($col_end))   == 0) {
                        return;
                }
                if (PHPExcel_Shared_Excel5::sizeRow($this->_phpSheet, $row_start + 1) == 0) {
                        return;
                }
                if (PHPExcel_Shared_Excel5::sizeRow($this->_phpSheet, $row_end + 1)   == 0) {
                        return;
                }

                // Convert the pixel values to the percentage value expected by Excel
                $x1 = $x1        / PHPExcel_Shared_Excel5::sizeCol($this->_phpSheet, PHPExcel_Cell::stringFromColumnIndex($col_start))   * 1024;
                $y1 = $y1        / PHPExcel_Shared_Excel5::sizeRow($this->_phpSheet, $row_start + 1)   *  256;
                $x2 = $width  / PHPExcel_Shared_Excel5::sizeCol($this->_phpSheet, PHPExcel_Cell::stringFromColumnIndex($col_end))        * 1024; // Distance to right side of object
                $y2 = $height / PHPExcel_Shared_Excel5::sizeRow($this->_phpSheet, $row_end + 1)  *  256; // Distance to bottom of object

                $this->_writeObjPicture($col_start, $x1,
                                                                 $row_start, $y1,
                                                                 $col_end, $x2,
                                                                 $row_end, $y2);
        }

        private function _writeObjPicture($colL,$dxL,$rwT,$dyT,$colR,$dxR,$rwB,$dyB)
        {
                $record   = 0x005d;   // Record identifier
                $length   = 0x003c;   // Bytes to follow

                $cObj           = 0x0001;   // Count of objects in file (set to 1)
                $OT               = 0x0008;   // Object type. 8 = Picture
                $id               = 0x0001;   // Object ID
                $grbit     = 0x0614;   // Option flags

                $cbMacro         = 0x0000;   // Length of FMLA structure
                $Reserved1   = 0x0000;   // Reserved
                $Reserved2   = 0x0000;   // Reserved

                $icvBack         = 0x09;         // Background colour
                $icvFore         = 0x09;         // Foreground colour
                $fls             = 0x00;         // Fill pattern
                $fAuto     = 0x00;       // Automatic fill
                $icv             = 0x08;         // Line colour
                $lns             = 0xff;         // Line style
                $lnw             = 0x01;         // Line weight
                $fAutoB   = 0x00;        // Automatic border
                $frs             = 0x0000;   // Frame style
                $cf               = 0x0009;   // Image format, 9 = bitmap
                $Reserved3   = 0x0000;   // Reserved
                $cbPictFmla  = 0x0000;   // Length of FMLA structure
                $Reserved4   = 0x0000;   // Reserved
                $grbit2   = 0x0001;   // Option flags
                $Reserved5   = 0x0000;   // Reserved


                $header   = pack("vv", $record, $length);
                $data           = pack("V", $cObj);
                $data      .= pack("v", $OT);
                $data      .= pack("v", $id);
                $data      .= pack("v", $grbit);
                $data      .= pack("v", $colL);
                $data      .= pack("v", $dxL);
                $data      .= pack("v", $rwT);
                $data      .= pack("v", $dyT);
                $data      .= pack("v", $colR);
                $data      .= pack("v", $dxR);
                $data      .= pack("v", $rwB);
                $data      .= pack("v", $dyB);
                $data      .= pack("v", $cbMacro);
                $data      .= pack("V", $Reserved1);
                $data      .= pack("v", $Reserved2);
                $data      .= pack("C", $icvBack);
                $data      .= pack("C", $icvFore);
                $data      .= pack("C", $fls);
                $data      .= pack("C", $fAuto);
                $data      .= pack("C", $icv);
                $data      .= pack("C", $lns);
                $data      .= pack("C", $lnw);
                $data      .= pack("C", $fAutoB);
                $data      .= pack("v", $frs);
                $data      .= pack("V", $cf);
                $data      .= pack("v", $Reserved3);
                $data      .= pack("v", $cbPictFmla);
                $data      .= pack("v", $Reserved4);
                $data      .= pack("v", $grbit2);
                $data      .= pack("V", $Reserved5);

                $this->_append($header . $data);
        }

        function _processBitmapGd($image) {
                $width = imagesx($image);
                $height = imagesy($image);

                $data = pack("Vvvvv", 0x000c, $width, $height, 0x01, 0x18);
                for ($j=$height; $j--; ) {
                        for ($i=0; $i < $width; ++$i) {
                                $color = imagecolorsforindex($image, imagecolorat($image, $i, $j));
                                foreach (array("red", "green", "blue") as $key) {
                                        $color[$key] = $color[$key] + round((255 - $color[$key]) * $color["alpha"] / 127);
                                }
                                $data .= chr($color["blue"]) . chr($color["green"]) . chr($color["red"]);
                        }
                        if (3*$width % 4) {
                                $data .= str_repeat("\x00", 4 - 3*$width % 4);
                        }
                }

                return array($width, $height, strlen($data), $data);
        }

        function _processBitmap($bitmap)
        {
                // Open file.
                $bmp_fd = @fopen($bitmap,"rb");
                if (!$bmp_fd) {
                        throw new PHPExcel_Writer_Exception("Couldn't import $bitmap");
                }

                // Slurp the file into a string.
                $data = fread($bmp_fd, filesize($bitmap));

                // Check that the file is big enough to be a bitmap.
                if (strlen($data) <= 0x36) {
                        throw new PHPExcel_Writer_Exception("$bitmap doesn't contain enough data.\n");
                }

                // The first 2 bytes are used to identify the bitmap.
                $identity = unpack("A2ident", $data);
                if ($identity['ident'] != "BM") {
                        throw new PHPExcel_Writer_Exception("$bitmap doesn't appear to be a valid bitmap image.\n");
                }

                // Remove bitmap data: ID.
                $data = substr($data, 2);

                // Read and remove the bitmap size. This is more reliable than reading
                // the data size at offset 0x22.
                //
                $size_array   = unpack("Vsa", substr($data, 0, 4));
                $size   = $size_array['sa'];
                $data   = substr($data, 4);
                $size  -= 0x36; // Subtract size of bitmap header.
                $size  += 0x0C; // Add size of BIFF header.

                // Remove bitmap data: reserved, offset, header length.
                $data = substr($data, 12);

                // Read and remove the bitmap width and height. Verify the sizes.
                $width_and_height = unpack("V2", substr($data, 0, 8));
                $width  = $width_and_height[1];
                $height = $width_and_height[2];
                $data   = substr($data, 8);
                if ($width > 0xFFFF) {
                        throw new PHPExcel_Writer_Exception("$bitmap: largest image width supported is 65k.\n");
                }
                if ($height > 0xFFFF) {
                        throw new PHPExcel_Writer_Exception("$bitmap: largest image height supported is 65k.\n");
                }

                // Read and remove the bitmap planes and bpp data. Verify them.
                $planes_and_bitcount = unpack("v2", substr($data, 0, 4));
                $data = substr($data, 4);
                if ($planes_and_bitcount[2] != 24) { // Bitcount
                        throw new PHPExcel_Writer_Exception("$bitmap isn't a 24bit true color bitmap.\n");
                }
                if ($planes_and_bitcount[1] != 1) {
                        throw new PHPExcel_Writer_Exception("$bitmap: only 1 plane supported in bitmap image.\n");
                }

                // Read and remove the bitmap compression. Verify compression.
                $compression = unpack("Vcomp", substr($data, 0, 4));
                $data = substr($data, 4);

                //$compression = 0;
                if ($compression['comp'] != 0) {
                        throw new PHPExcel_Writer_Exception("$bitmap: compression not supported in bitmap image.\n");
                }

                // Remove bitmap data: data size, hres, vres, colours, imp. colours.
                $data = substr($data, 20);

                // Add the BITMAPCOREHEADER data
                $header  = pack("Vvvvv", 0x000c, $width, $height, 0x01, 0x18);
                $data   = $header . $data;

                return (array($width, $height, $size, $data));
        }

        private function _writeZoom()
        {
                // If scale is 100 we don't need to write a record
                if ($this->_phpSheet->getSheetView()->getZoomScale() == 100) {
                        return;
                }

                $record   = 0x00A0;                        // Record identifier
                $length   = 0x0004;                        // Bytes to follow

                $header   = pack("vv", $record, $length);
                $data           = pack("vv", $this->_phpSheet->getSheetView()->getZoomScale(), 100);
                $this->_append($header . $data);
        }

        public function getEscher()
        {
                return $this->_escher;
        }

        public function setEscher(PHPExcel_Shared_Escher $pValue = null)
        {
                $this->_escher = $pValue;
        }

        private function _writeMsoDrawing()
        {
                // write the Escher stream if necessary
                if (isset($this->_escher)) {
                        $writer = new PHPExcel_Writer_Excel5_Escher($this->_escher);
                        $data = $writer->close();
                        $spOffsets = $writer->getSpOffsets();
                        $spTypes = $writer->getSpTypes();
                        // write the neccesary MSODRAWING, OBJ records

                        // split the Escher stream
                        $spOffsets[0] = 0;
                        $nm = count($spOffsets) - 1; // number of shapes excluding first shape
                        for ($i = 1; $i <= $nm; ++$i) {
                                // MSODRAWING record
                                $record = 0x00EC;                       // Record identifier

                                // chunk of Escher stream for one shape
                                $dataChunk = substr($data, $spOffsets[$i -1], $spOffsets[$i] - $spOffsets[$i - 1]);

                                $length = strlen($dataChunk);
                                $header = pack("vv", $record, $length);

                                $this->_append($header . $dataChunk);

                                // OBJ record
                                $record = 0x005D; // record identifier
                                $objData = '';

                                // ftCmo
                                if($spTypes[$i] == 0x00C9){
                                        // Add ftCmo (common object data) subobject
                                        $objData .=
                                                pack('vvvvvVVV'
                                                                , 0x0015        // 0x0015 = ftCmo
                                                                , 0x0012        // length of ftCmo data
                                                                , 0x0014        // object type, 0x0014 = filter
                                                                , $i            // object id number, Excel seems to use 1-based index, local for the sheet
                                                                , 0x2101        // option flags, 0x2001 is what OpenOffice.org uses
                                                                , 0                     // reserved
                                                                , 0                     // reserved
                                                                , 0                     // reserved
                                                );

                                        // Add ftSbs Scroll bar subobject
                                        $objData .= pack('vv', 0x00C, 0x0014);
                                        $objData .= pack('H*', '0000000000000000640001000A00000010000100');
                                        // Add ftLbsData (List box data) subobject
                                        $objData .= pack('vv', 0x0013, 0x1FEE);
                                        $objData .= pack('H*', '00000000010001030000020008005700');
                                }
                                else {
                                        // Add ftCmo (common object data) subobject
                                        $objData .=
                                                pack('vvvvvVVV'
                                                        , 0x0015        // 0x0015 = ftCmo
                                                        , 0x0012        // length of ftCmo data
                                                        , 0x0008        // object type, 0x0008 = picture
                                                        , $i            // object id number, Excel seems to use 1-based index, local for the sheet
                                                        , 0x6011        // option flags, 0x6011 is what OpenOffice.org uses
                                                        , 0                     // reserved
                                                        , 0                     // reserved
                                                        , 0                     // reserved
                                                );
                                }

                                // ftEnd
                                $objData .=
                                        pack('vv'
                                                , 0x0000        // 0x0000 = ftEnd
                                                , 0x0000        // length of ftEnd data
                                        );

                                $length = strlen($objData);
                                $header = pack('vv', $record, $length);
                                $this->_append($header . $objData);
                        }
                }
        }

        private function _writeDataValidity()
        {
                // Datavalidation collection
                $dataValidationCollection = $this->_phpSheet->getDataValidationCollection();

                // Write data validations?
                if (!empty($dataValidationCollection)) {

                        // DATAVALIDATIONS record
                        $record = 0x01B2;         // Record identifier
                        $length   = 0x0012;       // Bytes to follow

                        $grbit  = 0x0000;          // Prompt box at cell, no cached validity data at DV records
                        $horPos   = 0x00000000;  // Horizontal position of prompt box, if fixed position
                        $verPos   = 0x00000000;  // Vertical position of prompt box, if fixed position
                        $objId  = 0xFFFFFFFF;  // Object identifier of drop down arrow object, or -1 if not visible

                        $header   = pack('vv', $record, $length);
                        $data           = pack('vVVVV', $grbit, $horPos, $verPos, $objId,
                                                                                 count($dataValidationCollection));
                        $this->_append($header.$data);

                        // DATAVALIDATION records
                        $record = 0x01BE;                         // Record identifier

                        foreach ($dataValidationCollection as $cellCoordinate => $dataValidation) {
                                // initialize record data
                                $data = '';

                                // options
                                $options = 0x00000000;

                                // data type
                                $type = $dataValidation->getType();
                                switch ($type) {
                                        case PHPExcel_Cell_DataValidation::TYPE_NONE:           $type = 0x00;   break;
                                        case PHPExcel_Cell_DataValidation::TYPE_WHOLE:          $type = 0x01;   break;
                                        case PHPExcel_Cell_DataValidation::TYPE_DECIMAL:        $type = 0x02;   break;
                                        case PHPExcel_Cell_DataValidation::TYPE_LIST:           $type = 0x03;   break;
                                        case PHPExcel_Cell_DataValidation::TYPE_DATE:           $type = 0x04;   break;
                                        case PHPExcel_Cell_DataValidation::TYPE_TIME:           $type = 0x05;   break;
                                        case PHPExcel_Cell_DataValidation::TYPE_TEXTLENGTH:     $type = 0x06;   break;
                                        case PHPExcel_Cell_DataValidation::TYPE_CUSTOM:         $type = 0x07;   break;
                                }
                                $options |= $type << 0;

                                // error style
                                $errorStyle = $dataValidation->getType();
                                switch ($errorStyle) {
                                        case PHPExcel_Cell_DataValidation::STYLE_STOP:                  $errorStyle = 0x00;             break;
                                        case PHPExcel_Cell_DataValidation::STYLE_WARNING:               $errorStyle = 0x01;             break;
                                        case PHPExcel_Cell_DataValidation::STYLE_INFORMATION:   $errorStyle = 0x02;             break;
                                }
                                $options |= $errorStyle << 4;

                                // explicit formula?
                                if ($type == 0x03 && preg_match('/^\".*\"$/', $dataValidation->getFormula1())) {
                                        $options |= 0x01                                << 7;
                                }

                                // empty cells allowed
                                $options |= $dataValidation->getAllowBlank() << 8;

                                // show drop down
                                $options |= (!$dataValidation->getShowDropDown()) << 9;

                                // show input message
                                $options |= $dataValidation->getShowInputMessage() << 18;

                                // show error message
                                $options |= $dataValidation->getShowErrorMessage() << 19;

                                // condition operator
                                $operator = $dataValidation->getOperator();
                                switch ($operator) {
                                        case PHPExcel_Cell_DataValidation::OPERATOR_BETWEEN: $operator = 0x00                   ;       break;
                                        case PHPExcel_Cell_DataValidation::OPERATOR_NOTBETWEEN: $operator = 0x01                ;       break;
                                        case PHPExcel_Cell_DataValidation::OPERATOR_EQUAL: $operator = 0x02                             ;       break;
                                        case PHPExcel_Cell_DataValidation::OPERATOR_NOTEQUAL: $operator = 0x03                  ;       break;
                                        case PHPExcel_Cell_DataValidation::OPERATOR_GREATERTHAN: $operator = 0x04               ;       break;
                                        case PHPExcel_Cell_DataValidation::OPERATOR_LESSTHAN: $operator = 0x05                  ;       break;
                                        case PHPExcel_Cell_DataValidation::OPERATOR_GREATERTHANOREQUAL: $operator = 0x06;       break;
                                        case PHPExcel_Cell_DataValidation::OPERATOR_LESSTHANOREQUAL: $operator = 0x07   ;       break;
                                }
                                $options |= $operator << 20;

                                $data           = pack('V', $options);

                                // prompt title
                                $promptTitle = $dataValidation->getPromptTitle() !== '' ?
                                        $dataValidation->getPromptTitle() : chr(0);
                                $data .= PHPExcel_Shared_String::UTF8toBIFF8UnicodeLong($promptTitle);

                                // error title
                                $errorTitle = $dataValidation->getErrorTitle() !== '' ?
                                        $dataValidation->getErrorTitle() : chr(0);
                                $data .= PHPExcel_Shared_String::UTF8toBIFF8UnicodeLong($errorTitle);

                                // prompt text
                                $prompt = $dataValidation->getPrompt() !== '' ?
                                        $dataValidation->getPrompt() : chr(0);
                                $data .= PHPExcel_Shared_String::UTF8toBIFF8UnicodeLong($prompt);

                                // error text
                                $error = $dataValidation->getError() !== '' ?
                                        $dataValidation->getError() : chr(0);
                                $data .= PHPExcel_Shared_String::UTF8toBIFF8UnicodeLong($error);

                                // formula 1
                                try {
                                        $formula1 = $dataValidation->getFormula1();
                                        if ($type == 0x03) { // list type
                                                $formula1 = str_replace(',', chr(0), $formula1);
                                        }
                                        $this->_parser->parse($formula1);
                                        $formula1 = $this->_parser->toReversePolish();
                                        $sz1 = strlen($formula1);

                                } catch(PHPExcel_Exception $e) {
                                        $sz1 = 0;
                                        $formula1 = '';
                                }
                                $data .= pack('vv', $sz1, 0x0000);
                                $data .= $formula1;

                                // formula 2
                                try {
                                        $formula2 = $dataValidation->getFormula2();
                                        if ($formula2 === '') {
                                                throw new PHPExcel_Writer_Exception('No formula2');
                                        }
                                        $this->_parser->parse($formula2);
                                        $formula2 = $this->_parser->toReversePolish();
                                        $sz2 = strlen($formula2);

                                } catch(PHPExcel_Exception $e) {
                                        $sz2 = 0;
                                        $formula2 = '';
                                }
                                $data .= pack('vv', $sz2, 0x0000);
                                $data .= $formula2;

                                // cell range address list
                                $data .= pack('v', 0x0001);
                                $data .= $this->_writeBIFF8CellRangeAddressFixed($cellCoordinate);

                                $length = strlen($data);
                        $header = pack("vv", $record, $length);

                                $this->_append($header . $data);
                        }
                }
        }

        private static function _mapErrorCode($errorCode) {
                switch ($errorCode) {
                        case '#NULL!':  return 0x00;
                        case '#DIV/0!': return 0x07;
                        case '#VALUE!': return 0x0F;
                        case '#REF!':   return 0x17;
                        case '#NAME?':  return 0x1D;
                        case '#NUM!':   return 0x24;
                        case '#N/A':    return 0x2A;
                }

                return 0;
        }

        private function _writePageLayoutView(){
                $record   = 0x088B;                        // Record identifier
                $length   = 0x0010;                        // Bytes to follow

                $rt         = 0x088B; // 2
                $grbitFrt   = 0x0000; // 2
                $reserved   = 0x0000000000000000; // 8
                $wScalvePLV = $this->_phpSheet->getSheetView()->getZoomScale(); // 2

                // The options flags that comprise $grbit
                if($this->_phpSheet->getSheetView()->getView() == PHPExcel_Worksheet_SheetView::SHEETVIEW_PAGE_LAYOUT){
                        $fPageLayoutView   = 1;
                } else {
                        $fPageLayoutView   = 0;
                }
                $fRulerVisible     = 0;
                $fWhitespaceHidden = 0;

                $grbit      = $fPageLayoutView; // 2
                $grbit          |= $fRulerVisible          << 1;
                $grbit          |= $fWhitespaceHidden  << 3;

                $header   = pack("vv", $record, $length);
                $data     = pack("vvVVvv", $rt, $grbitFrt, 0x00000000, 0x00000000, $wScalvePLV, $grbit);
                $this->_append($header . $data);
        }

        private function _writeCFRule(PHPExcel_Style_Conditional $conditional){
                $record   = 0x01B1;                        // Record identifier

                // $type : Type of the CF
                // $operatorType : Comparison operator
                if($conditional->getConditionType() == PHPExcel_Style_Conditional::CONDITION_EXPRESSION){
                        $type = 0x02;
                        $operatorType = 0x00;
                } else if($conditional->getConditionType() == PHPExcel_Style_Conditional::CONDITION_CELLIS){
                        $type = 0x01;

                        switch ($conditional->getOperatorType()){
                                case PHPExcel_Style_Conditional::OPERATOR_NONE:
                                        $operatorType = 0x00;
                                        break;
                                case PHPExcel_Style_Conditional::OPERATOR_EQUAL:
                                        $operatorType = 0x03;
                                        break;
                                case PHPExcel_Style_Conditional::OPERATOR_GREATERTHAN:
                                        $operatorType = 0x05;
                                        break;
                                case PHPExcel_Style_Conditional::OPERATOR_GREATERTHANOREQUAL:
                                        $operatorType = 0x07;
                                        break;
                                case PHPExcel_Style_Conditional::OPERATOR_LESSTHAN:
                                        $operatorType = 0x06;
                                        break;
                                case PHPExcel_Style_Conditional::OPERATOR_LESSTHANOREQUAL:
                                        $operatorType = 0x08;
                                        break;
                                case PHPExcel_Style_Conditional::OPERATOR_NOTEQUAL:
                                        $operatorType = 0x04;
                                        break;
                                case PHPExcel_Style_Conditional::OPERATOR_BETWEEN:
                                        $operatorType = 0x01;
                                        break;
                                        // not OPERATOR_NOTBETWEEN 0x02
                        }
                }

                // $szValue1 : size of the formula data for first value or formula
                // $szValue2 : size of the formula data for second value or formula
                $arrConditions = $conditional->getConditions();
                $numConditions = sizeof($arrConditions);
                if($numConditions == 1){
                        $szValue1 = ($arrConditions[0] <= 65535 ? 3 : 0x0000);
                        $szValue2 = 0x0000;
                        $operand1 = pack('Cv', 0x1E, $arrConditions[0]);
                        $operand2 = null;
                } else if($numConditions == 2 && ($conditional->getOperatorType() == PHPExcel_Style_Conditional::OPERATOR_BETWEEN)){
                        $szValue1 = ($arrConditions[0] <= 65535 ? 3 : 0x0000);
                        $szValue2 = ($arrConditions[1] <= 65535 ? 3 : 0x0000);
                        $operand1 = pack('Cv', 0x1E, $arrConditions[0]);
                        $operand2 = pack('Cv', 0x1E, $arrConditions[1]);
                } else {
                        $szValue1 = 0x0000;
                        $szValue2 = 0x0000;
                        $operand1 = null;
                        $operand2 = null;
                }

                // $flags : Option flags
                // Alignment
                $bAlignHz = ($conditional->getStyle()->getAlignment()->getHorizontal() == null ? 1 : 0);
                $bAlignVt = ($conditional->getStyle()->getAlignment()->getVertical() == null ? 1 : 0);
                $bAlignWrapTx = ($conditional->getStyle()->getAlignment()->getWrapText() == false ? 1 : 0);
                $bTxRotation = ($conditional->getStyle()->getAlignment()->getTextRotation() == null ? 1 : 0);
                $bIndent = ($conditional->getStyle()->getAlignment()->getIndent() == 0 ? 1 : 0);
                $bShrinkToFit = ($conditional->getStyle()->getAlignment()->getShrinkToFit() == false ? 1 : 0);
                if($bAlignHz == 0 || $bAlignVt == 0 || $bAlignWrapTx == 0 || $bTxRotation == 0 || $bIndent == 0 || $bShrinkToFit == 0){
                        $bFormatAlign = 1;
                } else {
                        $bFormatAlign = 0;
                }
                // Protection
                $bProtLocked = ($conditional->getStyle()->getProtection()->getLocked() == null ? 1 : 0);
                $bProtHidden = ($conditional->getStyle()->getProtection()->getHidden() == null ? 1 : 0);
                if($bProtLocked == 0 || $bProtHidden == 0){
                        $bFormatProt = 1;
                } else {
                        $bFormatProt = 0;
                }
                // Border
                $bBorderLeft = ($conditional->getStyle()->getBorders()->getLeft()->getColor()->getARGB() == PHPExcel_Style_Color::COLOR_BLACK
                                                && $conditional->getStyle()->getBorders()->getLeft()->getBorderStyle() == PHPExcel_Style_Border::BORDER_NONE ? 1 : 0);
                $bBorderRight = ($conditional->getStyle()->getBorders()->getRight()->getColor()->getARGB() == PHPExcel_Style_Color::COLOR_BLACK
                                                && $conditional->getStyle()->getBorders()->getRight()->getBorderStyle() == PHPExcel_Style_Border::BORDER_NONE ? 1 : 0);
                $bBorderTop = ($conditional->getStyle()->getBorders()->getTop()->getColor()->getARGB() == PHPExcel_Style_Color::COLOR_BLACK
                                                && $conditional->getStyle()->getBorders()->getTop()->getBorderStyle() == PHPExcel_Style_Border::BORDER_NONE ? 1 : 0);
                $bBorderBottom = ($conditional->getStyle()->getBorders()->getBottom()->getColor()->getARGB() == PHPExcel_Style_Color::COLOR_BLACK
                                                && $conditional->getStyle()->getBorders()->getBottom()->getBorderStyle() == PHPExcel_Style_Border::BORDER_NONE ? 1 : 0);
                if($bBorderLeft == 0 || $bBorderRight == 0 || $bBorderTop == 0 || $bBorderBottom == 0){
                        $bFormatBorder = 1;
                } else {
                        $bFormatBorder = 0;
                }
                // Pattern
                $bFillStyle = ($conditional->getStyle()->getFill()->getFillType() == null ? 0 : 1);
                $bFillColor = ($conditional->getStyle()->getFill()->getStartColor()->getARGB() == null ? 0 : 1);
                $bFillColorBg = ($conditional->getStyle()->getFill()->getEndColor()->getARGB() == null ? 0 : 1);
                if($bFillStyle == 0 || $bFillColor == 0 || $bFillColorBg == 0){
                        $bFormatFill = 1;
                } else {
                        $bFormatFill = 0;
                }
                // Font
                if($conditional->getStyle()->getFont()->getName() != null
                        || $conditional->getStyle()->getFont()->getSize() != null
                        || $conditional->getStyle()->getFont()->getBold() != null
                        || $conditional->getStyle()->getFont()->getItalic() != null
                        || $conditional->getStyle()->getFont()->getSuperScript() != null
                        || $conditional->getStyle()->getFont()->getSubScript() != null
                        || $conditional->getStyle()->getFont()->getUnderline() != null
                        || $conditional->getStyle()->getFont()->getStrikethrough() != null
                        || $conditional->getStyle()->getFont()->getColor()->getARGB() != null){
                        $bFormatFont = 1;
                } else {
                        $bFormatFont = 0;
                }
                // Alignment
                $flags = 0;
                $flags |= (1 == $bAlignHz      ? 0x00000001 : 0);
                $flags |= (1 == $bAlignVt      ? 0x00000002 : 0);
                $flags |= (1 == $bAlignWrapTx  ? 0x00000004 : 0);
                $flags |= (1 == $bTxRotation   ? 0x00000008 : 0);
                // Justify last line flag
                $flags |= (1 == 1              ? 0x00000010 : 0);
                $flags |= (1 == $bIndent       ? 0x00000020 : 0);
                $flags |= (1 == $bShrinkToFit  ? 0x00000040 : 0);
                // Default
                $flags |= (1 == 1              ? 0x00000080 : 0);
                // Protection
                $flags |= (1 == $bProtLocked   ? 0x00000100 : 0);
                $flags |= (1 == $bProtHidden   ? 0x00000200 : 0);
                // Border
                $flags |= (1 == $bBorderLeft   ? 0x00000400 : 0);
                $flags |= (1 == $bBorderRight  ? 0x00000800 : 0);
                $flags |= (1 == $bBorderTop    ? 0x00001000 : 0);
                $flags |= (1 == $bBorderBottom ? 0x00002000 : 0);
                $flags |= (1 == 1              ? 0x00004000 : 0); // Top left to Bottom right border
                $flags |= (1 == 1              ? 0x00008000 : 0); // Bottom left to Top right border
                // Pattern
                $flags |= (1 == $bFillStyle    ? 0x00010000 : 0);
                $flags |= (1 == $bFillColor    ? 0x00020000 : 0);
                $flags |= (1 == $bFillColorBg  ? 0x00040000 : 0);
                $flags |= (1 == 1              ? 0x00380000 : 0);
                // Font
                $flags |= (1 == $bFormatFont   ? 0x04000000 : 0);
            // Alignment :
                $flags |= (1 == $bFormatAlign  ? 0x08000000 : 0);
                // Border
                $flags |= (1 == $bFormatBorder ? 0x10000000 : 0);
                // Pattern
                $flags |= (1 == $bFormatFill   ? 0x20000000 : 0);
                // Protection
                $flags |= (1 == $bFormatProt   ? 0x40000000 : 0);
                // Text direction
                $flags |= (1 == 0              ? 0x80000000 : 0);

                // Data Blocks
                if($bFormatFont == 1){
                        // Font Name
                        if($conditional->getStyle()->getFont()->getName() == null){
                                $dataBlockFont =  pack('VVVVVVVV', 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000);
                                $dataBlockFont .= pack('VVVVVVVV', 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000);
                        } else {
                                $dataBlockFont = PHPExcel_Shared_String::UTF8toBIFF8UnicodeLong($conditional->getStyle()->getFont()->getName());
                        }
                        // Font Size
                        if($conditional->getStyle()->getFont()->getSize() == null){
                                $dataBlockFont .= pack('V', 20 * 11);
                        } else {
                                $dataBlockFont .= pack('V', 20 * $conditional->getStyle()->getFont()->getSize());
                        }
                        // Font Options
                        $dataBlockFont .= pack('V', 0);
                        // Font weight
                        if($conditional->getStyle()->getFont()->getBold() == true){
                                $dataBlockFont .= pack('v', 0x02BC);
                        } else {
                                $dataBlockFont .= pack('v', 0x0190);
                        }
                        // Escapement type
                        if($conditional->getStyle()->getFont()->getSubScript() == true){
                                $dataBlockFont .= pack('v', 0x02);
                                $fontEscapement = 0;
                        } else if($conditional->getStyle()->getFont()->getSuperScript() == true){
                                $dataBlockFont .= pack('v', 0x01);
                                $fontEscapement = 0;
                        } else {
                                $dataBlockFont .= pack('v', 0x00);
                                $fontEscapement = 1;
                        }
                        // Underline type
                        switch ($conditional->getStyle()->getFont()->getUnderline()){
                                case PHPExcel_Style_Font::UNDERLINE_NONE             : $dataBlockFont .= pack('C', 0x00); $fontUnderline = 0; break;
                                case PHPExcel_Style_Font::UNDERLINE_DOUBLE           : $dataBlockFont .= pack('C', 0x02); $fontUnderline = 0; break;
                                case PHPExcel_Style_Font::UNDERLINE_DOUBLEACCOUNTING : $dataBlockFont .= pack('C', 0x22); $fontUnderline = 0; break;
                                case PHPExcel_Style_Font::UNDERLINE_SINGLE           : $dataBlockFont .= pack('C', 0x01); $fontUnderline = 0; break;
                                case PHPExcel_Style_Font::UNDERLINE_SINGLEACCOUNTING : $dataBlockFont .= pack('C', 0x21); $fontUnderline = 0; break;
                                default                                              : $dataBlockFont .= pack('C', 0x00); $fontUnderline = 1; break;
                        }
                        // Not used (3)
                        $dataBlockFont .= pack('vC', 0x0000, 0x00);
                        // Font color index
                        switch ($conditional->getStyle()->getFont()->getColor()->getRGB()) {
                                case '000000': $colorIdx = 0x08; break;
                                case 'FFFFFF': $colorIdx = 0x09; break;
                                case 'FF0000': $colorIdx = 0x0A; break;
                                case '00FF00': $colorIdx = 0x0B; break;
                                case '0000FF': $colorIdx = 0x0C; break;
                                case 'FFFF00': $colorIdx = 0x0D; break;
                                case 'FF00FF': $colorIdx = 0x0E; break;
                                case '00FFFF': $colorIdx = 0x0F; break;
                                case '800000': $colorIdx = 0x10; break;
                                case '008000': $colorIdx = 0x11; break;
                                case '000080': $colorIdx = 0x12; break;
                                case '808000': $colorIdx = 0x13; break;
                                case '800080': $colorIdx = 0x14; break;
                                case '008080': $colorIdx = 0x15; break;
                                case 'C0C0C0': $colorIdx = 0x16; break;
                                case '808080': $colorIdx = 0x17; break;
                                case '9999FF': $colorIdx = 0x18; break;
                                case '993366': $colorIdx = 0x19; break;
                                case 'FFFFCC': $colorIdx = 0x1A; break;
                                case 'CCFFFF': $colorIdx = 0x1B; break;
                                case '660066': $colorIdx = 0x1C; break;
                                case 'FF8080': $colorIdx = 0x1D; break;
                                case '0066CC': $colorIdx = 0x1E; break;
                                case 'CCCCFF': $colorIdx = 0x1F; break;
                                case '000080': $colorIdx = 0x20; break;
                                case 'FF00FF': $colorIdx = 0x21; break;
                                case 'FFFF00': $colorIdx = 0x22; break;
                                case '00FFFF': $colorIdx = 0x23; break;
                                case '800080': $colorIdx = 0x24; break;
                                case '800000': $colorIdx = 0x25; break;
                                case '008080': $colorIdx = 0x26; break;
                                case '0000FF': $colorIdx = 0x27; break;
                                case '00CCFF': $colorIdx = 0x28; break;
                                case 'CCFFFF': $colorIdx = 0x29; break;
                                case 'CCFFCC': $colorIdx = 0x2A; break;
                                case 'FFFF99': $colorIdx = 0x2B; break;
                                case '99CCFF': $colorIdx = 0x2C; break;
                                case 'FF99CC': $colorIdx = 0x2D; break;
                                case 'CC99FF': $colorIdx = 0x2E; break;
                                case 'FFCC99': $colorIdx = 0x2F; break;
                                case '3366FF': $colorIdx = 0x30; break;
                                case '33CCCC': $colorIdx = 0x31; break;
                                case '99CC00': $colorIdx = 0x32; break;
                                case 'FFCC00': $colorIdx = 0x33; break;
                                case 'FF9900': $colorIdx = 0x34; break;
                                case 'FF6600': $colorIdx = 0x35; break;
                                case '666699': $colorIdx = 0x36; break;
                                case '969696': $colorIdx = 0x37; break;
                                case '003366': $colorIdx = 0x38; break;
                                case '339966': $colorIdx = 0x39; break;
                                case '003300': $colorIdx = 0x3A; break;
                                case '333300': $colorIdx = 0x3B; break;
                                case '993300': $colorIdx = 0x3C; break;
                                case '993366': $colorIdx = 0x3D; break;
                                case '333399': $colorIdx = 0x3E; break;
                                case '333333': $colorIdx = 0x3F; break;
                                default: $colorIdx = 0x00; break;
                        }
                        $dataBlockFont .= pack('V', $colorIdx);
                        // Not used (4)
                        $dataBlockFont .= pack('V', 0x00000000);
                        // Options flags for modified font attributes
                        $optionsFlags = 0;
                        $optionsFlagsBold = ($conditional->getStyle()->getFont()->getBold() == null ? 1 : 0);
                        $optionsFlags |= (1 == $optionsFlagsBold  ? 0x00000002 : 0);
                        $optionsFlags |= (1 == 1                  ? 0x00000008 : 0);
                        $optionsFlags |= (1 == 1                  ? 0x00000010 : 0);
                        $optionsFlags |= (1 == 0                  ? 0x00000020 : 0);
                        $optionsFlags |= (1 == 1                  ? 0x00000080 : 0);
                        $dataBlockFont .= pack('V', $optionsFlags);
                        // Escapement type
                        $dataBlockFont .= pack('V', $fontEscapement);
                        // Underline type
                        $dataBlockFont .= pack('V', $fontUnderline);
                        // Always
                        $dataBlockFont .= pack('V', 0x00000000);
                        // Always
                        $dataBlockFont .= pack('V', 0x00000000);
                        // Not used (8)
                        $dataBlockFont .= pack('VV', 0x00000000, 0x00000000);
                        // Always
                        $dataBlockFont .= pack('v', 0x0001);
                }
                if($bFormatAlign == 1){
                        $blockAlign = 0;
                        // Alignment and text break
                        switch ($conditional->getStyle()->getAlignment()->getHorizontal()){
                                case PHPExcel_Style_Alignment::HORIZONTAL_GENERAL                       : $blockAlign = 0; break;
                                case PHPExcel_Style_Alignment::HORIZONTAL_LEFT                          : $blockAlign = 1; break;
                                case PHPExcel_Style_Alignment::HORIZONTAL_RIGHT                         : $blockAlign = 3; break;
                                case PHPExcel_Style_Alignment::HORIZONTAL_CENTER                        : $blockAlign = 2; break;
                                case PHPExcel_Style_Alignment::HORIZONTAL_CENTER_CONTINUOUS     : $blockAlign = 6; break;
                                case PHPExcel_Style_Alignment::HORIZONTAL_JUSTIFY                       : $blockAlign = 5; break;
                        }
                        if($conditional->getStyle()->getAlignment()->getWrapText() == true){
                                $blockAlign |= 1 << 3;
                        } else {
                                $blockAlign |= 0 << 3;
                        }
                        switch ($conditional->getStyle()->getAlignment()->getVertical()){
                                case PHPExcel_Style_Alignment::VERTICAL_BOTTOM                          : $blockAlign = 2 << 4; break;
                                case PHPExcel_Style_Alignment::VERTICAL_TOP                                     : $blockAlign = 0 << 4; break;
                                case PHPExcel_Style_Alignment::VERTICAL_CENTER                          : $blockAlign = 1 << 4; break;
                                case PHPExcel_Style_Alignment::VERTICAL_JUSTIFY                         : $blockAlign = 3 << 4; break;
                        }
                        $blockAlign |= 0 << 7;

                        // Text rotation angle
                        $blockRotation = $conditional->getStyle()->getAlignment()->getTextRotation();

                        // Indentation
                        $blockIndent = $conditional->getStyle()->getAlignment()->getIndent();
                        if($conditional->getStyle()->getAlignment()->getShrinkToFit() == true){
                                $blockIndent |= 1 << 4;
                        } else {
                                $blockIndent |= 0 << 4;
                        }
                        $blockIndent |= 0 << 6;

                        // Relative indentation
                        $blockIndentRelative = 255;

                        $dataBlockAlign = pack('CCvvv', $blockAlign, $blockRotation, $blockIndent, $blockIndentRelative, 0x0000);
                }
                if($bFormatBorder == 1){
                        $blockLineStyle = 0;
                        switch ($conditional->getStyle()->getBorders()->getLeft()->getBorderStyle()){
                                case PHPExcel_Style_Border::BORDER_NONE              : $blockLineStyle |= 0x00; break;
                                case PHPExcel_Style_Border::BORDER_THIN              : $blockLineStyle |= 0x01; break;
                                case PHPExcel_Style_Border::BORDER_MEDIUM            : $blockLineStyle |= 0x02; break;
                                case PHPExcel_Style_Border::BORDER_DASHED            : $blockLineStyle |= 0x03; break;
                                case PHPExcel_Style_Border::BORDER_DOTTED            : $blockLineStyle |= 0x04; break;
                                case PHPExcel_Style_Border::BORDER_THICK             : $blockLineStyle |= 0x05; break;
                                case PHPExcel_Style_Border::BORDER_DOUBLE            : $blockLineStyle |= 0x06; break;
                                case PHPExcel_Style_Border::BORDER_HAIR              : $blockLineStyle |= 0x07; break;
                                case PHPExcel_Style_Border::BORDER_MEDIUMDASHED      : $blockLineStyle |= 0x08; break;
                                case PHPExcel_Style_Border::BORDER_DASHDOT           : $blockLineStyle |= 0x09; break;
                                case PHPExcel_Style_Border::BORDER_MEDIUMDASHDOT     : $blockLineStyle |= 0x0A; break;
                                case PHPExcel_Style_Border::BORDER_DASHDOTDOT        : $blockLineStyle |= 0x0B; break;
                                case PHPExcel_Style_Border::BORDER_MEDIUMDASHDOTDOT  : $blockLineStyle |= 0x0C; break;
                                case PHPExcel_Style_Border::BORDER_SLANTDASHDOT      : $blockLineStyle |= 0x0D; break;
                        }
                        switch ($conditional->getStyle()->getBorders()->getRight()->getBorderStyle()){
                                case PHPExcel_Style_Border::BORDER_NONE              : $blockLineStyle |= 0x00 << 4; break;
                                case PHPExcel_Style_Border::BORDER_THIN              : $blockLineStyle |= 0x01 << 4; break;
                                case PHPExcel_Style_Border::BORDER_MEDIUM            : $blockLineStyle |= 0x02 << 4; break;
                                case PHPExcel_Style_Border::BORDER_DASHED            : $blockLineStyle |= 0x03 << 4; break;
                                case PHPExcel_Style_Border::BORDER_DOTTED            : $blockLineStyle |= 0x04 << 4; break;
                                case PHPExcel_Style_Border::BORDER_THICK             : $blockLineStyle |= 0x05 << 4; break;
                                case PHPExcel_Style_Border::BORDER_DOUBLE            : $blockLineStyle |= 0x06 << 4; break;
                                case PHPExcel_Style_Border::BORDER_HAIR              : $blockLineStyle |= 0x07 << 4; break;
                                case PHPExcel_Style_Border::BORDER_MEDIUMDASHED      : $blockLineStyle |= 0x08 << 4; break;
                                case PHPExcel_Style_Border::BORDER_DASHDOT           : $blockLineStyle |= 0x09 << 4; break;
                                case PHPExcel_Style_Border::BORDER_MEDIUMDASHDOT     : $blockLineStyle |= 0x0A << 4; break;
                                case PHPExcel_Style_Border::BORDER_DASHDOTDOT        : $blockLineStyle |= 0x0B << 4; break;
                                case PHPExcel_Style_Border::BORDER_MEDIUMDASHDOTDOT  : $blockLineStyle |= 0x0C << 4; break;
                                case PHPExcel_Style_Border::BORDER_SLANTDASHDOT      : $blockLineStyle |= 0x0D << 4; break;
                        }
                        switch ($conditional->getStyle()->getBorders()->getTop()->getBorderStyle()){
                                case PHPExcel_Style_Border::BORDER_NONE              : $blockLineStyle |= 0x00 << 8; break;
                                case PHPExcel_Style_Border::BORDER_THIN              : $blockLineStyle |= 0x01 << 8; break;
                                case PHPExcel_Style_Border::BORDER_MEDIUM            : $blockLineStyle |= 0x02 << 8; break;
                                case PHPExcel_Style_Border::BORDER_DASHED            : $blockLineStyle |= 0x03 << 8; break;
                                case PHPExcel_Style_Border::BORDER_DOTTED            : $blockLineStyle |= 0x04 << 8; break;
                                case PHPExcel_Style_Border::BORDER_THICK             : $blockLineStyle |= 0x05 << 8; break;
                                case PHPExcel_Style_Border::BORDER_DOUBLE            : $blockLineStyle |= 0x06 << 8; break;
                                case PHPExcel_Style_Border::BORDER_HAIR              : $blockLineStyle |= 0x07 << 8; break;
                                case PHPExcel_Style_Border::BORDER_MEDIUMDASHED      : $blockLineStyle |= 0x08 << 8; break;
                                case PHPExcel_Style_Border::BORDER_DASHDOT           : $blockLineStyle |= 0x09 << 8; break;
                                case PHPExcel_Style_Border::BORDER_MEDIUMDASHDOT     : $blockLineStyle |= 0x0A << 8; break;
                                case PHPExcel_Style_Border::BORDER_DASHDOTDOT        : $blockLineStyle |= 0x0B << 8; break;
                                case PHPExcel_Style_Border::BORDER_MEDIUMDASHDOTDOT  : $blockLineStyle |= 0x0C << 8; break;
                                case PHPExcel_Style_Border::BORDER_SLANTDASHDOT      : $blockLineStyle |= 0x0D << 8; break;
                        }
                        switch ($conditional->getStyle()->getBorders()->getBottom()->getBorderStyle()){
                                case PHPExcel_Style_Border::BORDER_NONE              : $blockLineStyle |= 0x00 << 12; break;
                                case PHPExcel_Style_Border::BORDER_THIN              : $blockLineStyle |= 0x01 << 12; break;
                                case PHPExcel_Style_Border::BORDER_MEDIUM            : $blockLineStyle |= 0x02 << 12; break;
                                case PHPExcel_Style_Border::BORDER_DASHED            : $blockLineStyle |= 0x03 << 12; break;
                                case PHPExcel_Style_Border::BORDER_DOTTED            : $blockLineStyle |= 0x04 << 12; break;
                                case PHPExcel_Style_Border::BORDER_THICK             : $blockLineStyle |= 0x05 << 12; break;
                                case PHPExcel_Style_Border::BORDER_DOUBLE            : $blockLineStyle |= 0x06 << 12; break;
                                case PHPExcel_Style_Border::BORDER_HAIR              : $blockLineStyle |= 0x07 << 12; break;
                                case PHPExcel_Style_Border::BORDER_MEDIUMDASHED      : $blockLineStyle |= 0x08 << 12; break;
                                case PHPExcel_Style_Border::BORDER_DASHDOT           : $blockLineStyle |= 0x09 << 12; break;
                                case PHPExcel_Style_Border::BORDER_MEDIUMDASHDOT     : $blockLineStyle |= 0x0A << 12; break;
                                case PHPExcel_Style_Border::BORDER_DASHDOTDOT        : $blockLineStyle |= 0x0B << 12; break;
                                case PHPExcel_Style_Border::BORDER_MEDIUMDASHDOTDOT  : $blockLineStyle |= 0x0C << 12; break;
                                case PHPExcel_Style_Border::BORDER_SLANTDASHDOT      : $blockLineStyle |= 0x0D << 12; break;
                        }
                        //@todo _writeCFRule() => $blockLineStyle => Index Color for left line
                        //@todo _writeCFRule() => $blockLineStyle => Index Color for right line
                        //@todo _writeCFRule() => $blockLineStyle => Top-left to bottom-right on/off
                        //@todo _writeCFRule() => $blockLineStyle => Bottom-left to top-right on/off
                        $blockColor = 0;
                        //@todo _writeCFRule() => $blockColor => Index Color for top line
                        //@todo _writeCFRule() => $blockColor => Index Color for bottom line
                        //@todo _writeCFRule() => $blockColor => Index Color for diagonal line
                        switch ($conditional->getStyle()->getBorders()->getDiagonal()->getBorderStyle()){
                                case PHPExcel_Style_Border::BORDER_NONE              : $blockColor |= 0x00 << 21; break;
                                case PHPExcel_Style_Border::BORDER_THIN              : $blockColor |= 0x01 << 21; break;
                                case PHPExcel_Style_Border::BORDER_MEDIUM            : $blockColor |= 0x02 << 21; break;
                                case PHPExcel_Style_Border::BORDER_DASHED            : $blockColor |= 0x03 << 21; break;
                                case PHPExcel_Style_Border::BORDER_DOTTED            : $blockColor |= 0x04 << 21; break;
                                case PHPExcel_Style_Border::BORDER_THICK             : $blockColor |= 0x05 << 21; break;
                                case PHPExcel_Style_Border::BORDER_DOUBLE            : $blockColor |= 0x06 << 21; break;
                                case PHPExcel_Style_Border::BORDER_HAIR              : $blockColor |= 0x07 << 21; break;
                                case PHPExcel_Style_Border::BORDER_MEDIUMDASHED      : $blockColor |= 0x08 << 21; break;
                                case PHPExcel_Style_Border::BORDER_DASHDOT           : $blockColor |= 0x09 << 21; break;
                                case PHPExcel_Style_Border::BORDER_MEDIUMDASHDOT     : $blockColor |= 0x0A << 21; break;
                                case PHPExcel_Style_Border::BORDER_DASHDOTDOT        : $blockColor |= 0x0B << 21; break;
                                case PHPExcel_Style_Border::BORDER_MEDIUMDASHDOTDOT  : $blockColor |= 0x0C << 21; break;
                                case PHPExcel_Style_Border::BORDER_SLANTDASHDOT      : $blockColor |= 0x0D << 21; break;
                        }
                        $dataBlockBorder = pack('vv', $blockLineStyle, $blockColor);
                }
                if($bFormatFill == 1){
                        // Fill Patern Style
                        $blockFillPatternStyle = 0;
                        switch ($conditional->getStyle()->getFill()->getFillType()){
                                case PHPExcel_Style_Fill::FILL_NONE                                             : $blockFillPatternStyle = 0x00; break;
                                case PHPExcel_Style_Fill::FILL_SOLID                                    : $blockFillPatternStyle = 0x01; break;
                                case PHPExcel_Style_Fill::FILL_PATTERN_MEDIUMGRAY               : $blockFillPatternStyle = 0x02; break;
                                case PHPExcel_Style_Fill::FILL_PATTERN_DARKGRAY                 : $blockFillPatternStyle = 0x03; break;
                                case PHPExcel_Style_Fill::FILL_PATTERN_LIGHTGRAY                : $blockFillPatternStyle = 0x04; break;
                                case PHPExcel_Style_Fill::FILL_PATTERN_DARKHORIZONTAL   : $blockFillPatternStyle = 0x05; break;
                                case PHPExcel_Style_Fill::FILL_PATTERN_DARKVERTICAL             : $blockFillPatternStyle = 0x06; break;
                                case PHPExcel_Style_Fill::FILL_PATTERN_DARKDOWN                 : $blockFillPatternStyle = 0x07; break;
                                case PHPExcel_Style_Fill::FILL_PATTERN_DARKUP                   : $blockFillPatternStyle = 0x08; break;
                                case PHPExcel_Style_Fill::FILL_PATTERN_DARKGRID                 : $blockFillPatternStyle = 0x09; break;
                                case PHPExcel_Style_Fill::FILL_PATTERN_DARKTRELLIS              : $blockFillPatternStyle = 0x0A; break;
                                case PHPExcel_Style_Fill::FILL_PATTERN_LIGHTHORIZONTAL  : $blockFillPatternStyle = 0x0B; break;
                                case PHPExcel_Style_Fill::FILL_PATTERN_LIGHTVERTICAL    : $blockFillPatternStyle = 0x0C; break;
                                case PHPExcel_Style_Fill::FILL_PATTERN_LIGHTDOWN                : $blockFillPatternStyle = 0x0D; break;
                                case PHPExcel_Style_Fill::FILL_PATTERN_LIGHTUP                  : $blockFillPatternStyle = 0x0E; break;
                                case PHPExcel_Style_Fill::FILL_PATTERN_LIGHTGRID                : $blockFillPatternStyle = 0x0F; break;
                                case PHPExcel_Style_Fill::FILL_PATTERN_LIGHTTRELLIS             : $blockFillPatternStyle = 0x10; break;
                                case PHPExcel_Style_Fill::FILL_PATTERN_GRAY125                  : $blockFillPatternStyle = 0x11; break;
                                case PHPExcel_Style_Fill::FILL_PATTERN_GRAY0625                 : $blockFillPatternStyle = 0x12; break;
                                case PHPExcel_Style_Fill::FILL_GRADIENT_LINEAR                  : $blockFillPatternStyle = 0x00; break; // does not exist in BIFF8
                                case PHPExcel_Style_Fill::FILL_GRADIENT_PATH                    : $blockFillPatternStyle = 0x00; break; // does not exist in BIFF8
                                default                                                 : $blockFillPatternStyle = 0x00; break;
                        }
                        // Color
                        switch ($conditional->getStyle()->getFill()->getStartColor()->getRGB()) {
                                case '000000': $colorIdxBg = 0x08; break;
                                case 'FFFFFF': $colorIdxBg = 0x09; break;
                                case 'FF0000': $colorIdxBg = 0x0A; break;
                                case '00FF00': $colorIdxBg = 0x0B; break;
                                case '0000FF': $colorIdxBg = 0x0C; break;
                                case 'FFFF00': $colorIdxBg = 0x0D; break;
                                case 'FF00FF': $colorIdxBg = 0x0E; break;
                                case '00FFFF': $colorIdxBg = 0x0F; break;
                                case '800000': $colorIdxBg = 0x10; break;
                                case '008000': $colorIdxBg = 0x11; break;
                                case '000080': $colorIdxBg = 0x12; break;
                                case '808000': $colorIdxBg = 0x13; break;
                                case '800080': $colorIdxBg = 0x14; break;
                                case '008080': $colorIdxBg = 0x15; break;
                                case 'C0C0C0': $colorIdxBg = 0x16; break;
                                case '808080': $colorIdxBg = 0x17; break;
                                case '9999FF': $colorIdxBg = 0x18; break;
                                case '993366': $colorIdxBg = 0x19; break;
                                case 'FFFFCC': $colorIdxBg = 0x1A; break;
                                case 'CCFFFF': $colorIdxBg = 0x1B; break;
                                case '660066': $colorIdxBg = 0x1C; break;
                                case 'FF8080': $colorIdxBg = 0x1D; break;
                                case '0066CC': $colorIdxBg = 0x1E; break;
                                case 'CCCCFF': $colorIdxBg = 0x1F; break;
                                case '000080': $colorIdxBg = 0x20; break;
                                case 'FF00FF': $colorIdxBg = 0x21; break;
                                case 'FFFF00': $colorIdxBg = 0x22; break;
                                case '00FFFF': $colorIdxBg = 0x23; break;
                                case '800080': $colorIdxBg = 0x24; break;
                                case '800000': $colorIdxBg = 0x25; break;
                                case '008080': $colorIdxBg = 0x26; break;
                                case '0000FF': $colorIdxBg = 0x27; break;
                                case '00CCFF': $colorIdxBg = 0x28; break;
                                case 'CCFFFF': $colorIdxBg = 0x29; break;
                                case 'CCFFCC': $colorIdxBg = 0x2A; break;
                                case 'FFFF99': $colorIdxBg = 0x2B; break;
                                case '99CCFF': $colorIdxBg = 0x2C; break;
                                case 'FF99CC': $colorIdxBg = 0x2D; break;
                                case 'CC99FF': $colorIdxBg = 0x2E; break;
                                case 'FFCC99': $colorIdxBg = 0x2F; break;
                                case '3366FF': $colorIdxBg = 0x30; break;
                                case '33CCCC': $colorIdxBg = 0x31; break;
                                case '99CC00': $colorIdxBg = 0x32; break;
                                case 'FFCC00': $colorIdxBg = 0x33; break;
                                case 'FF9900': $colorIdxBg = 0x34; break;
                                case 'FF6600': $colorIdxBg = 0x35; break;
                                case '666699': $colorIdxBg = 0x36; break;
                                case '969696': $colorIdxBg = 0x37; break;
                                case '003366': $colorIdxBg = 0x38; break;
                                case '339966': $colorIdxBg = 0x39; break;
                                case '003300': $colorIdxBg = 0x3A; break;
                                case '333300': $colorIdxBg = 0x3B; break;
                                case '993300': $colorIdxBg = 0x3C; break;
                                case '993366': $colorIdxBg = 0x3D; break;
                                case '333399': $colorIdxBg = 0x3E; break;
                                case '333333': $colorIdxBg = 0x3F; break;
                                default:       $colorIdxBg = 0x41; break;
                        }
                        // Fg Color
                        switch ($conditional->getStyle()->getFill()->getEndColor()->getRGB()) {
                                case '000000': $colorIdxFg = 0x08; break;
                                case 'FFFFFF': $colorIdxFg = 0x09; break;
                                case 'FF0000': $colorIdxFg = 0x0A; break;
                                case '00FF00': $colorIdxFg = 0x0B; break;
                                case '0000FF': $colorIdxFg = 0x0C; break;
                                case 'FFFF00': $colorIdxFg = 0x0D; break;
                                case 'FF00FF': $colorIdxFg = 0x0E; break;
                                case '00FFFF': $colorIdxFg = 0x0F; break;
                                case '800000': $colorIdxFg = 0x10; break;
                                case '008000': $colorIdxFg = 0x11; break;
                                case '000080': $colorIdxFg = 0x12; break;
                                case '808000': $colorIdxFg = 0x13; break;
                                case '800080': $colorIdxFg = 0x14; break;
                                case '008080': $colorIdxFg = 0x15; break;
                                case 'C0C0C0': $colorIdxFg = 0x16; break;
                                case '808080': $colorIdxFg = 0x17; break;
                                case '9999FF': $colorIdxFg = 0x18; break;
                                case '993366': $colorIdxFg = 0x19; break;
                                case 'FFFFCC': $colorIdxFg = 0x1A; break;
                                case 'CCFFFF': $colorIdxFg = 0x1B; break;
                                case '660066': $colorIdxFg = 0x1C; break;
                                case 'FF8080': $colorIdxFg = 0x1D; break;
                                case '0066CC': $colorIdxFg = 0x1E; break;
                                case 'CCCCFF': $colorIdxFg = 0x1F; break;
                                case '000080': $colorIdxFg = 0x20; break;
                                case 'FF00FF': $colorIdxFg = 0x21; break;
                                case 'FFFF00': $colorIdxFg = 0x22; break;
                                case '00FFFF': $colorIdxFg = 0x23; break;
                                case '800080': $colorIdxFg = 0x24; break;
                                case '800000': $colorIdxFg = 0x25; break;
                                case '008080': $colorIdxFg = 0x26; break;
                                case '0000FF': $colorIdxFg = 0x27; break;
                                case '00CCFF': $colorIdxFg = 0x28; break;
                                case 'CCFFFF': $colorIdxFg = 0x29; break;
                                case 'CCFFCC': $colorIdxFg = 0x2A; break;
                                case 'FFFF99': $colorIdxFg = 0x2B; break;
                                case '99CCFF': $colorIdxFg = 0x2C; break;
                                case 'FF99CC': $colorIdxFg = 0x2D; break;
                                case 'CC99FF': $colorIdxFg = 0x2E; break;
                                case 'FFCC99': $colorIdxFg = 0x2F; break;
                                case '3366FF': $colorIdxFg = 0x30; break;
                                case '33CCCC': $colorIdxFg = 0x31; break;
                                case '99CC00': $colorIdxFg = 0x32; break;
                                case 'FFCC00': $colorIdxFg = 0x33; break;
                                case 'FF9900': $colorIdxFg = 0x34; break;
                                case 'FF6600': $colorIdxFg = 0x35; break;
                                case '666699': $colorIdxFg = 0x36; break;
                                case '969696': $colorIdxFg = 0x37; break;
                                case '003366': $colorIdxFg = 0x38; break;
                                case '339966': $colorIdxFg = 0x39; break;
                                case '003300': $colorIdxFg = 0x3A; break;
                                case '333300': $colorIdxFg = 0x3B; break;
                                case '993300': $colorIdxFg = 0x3C; break;
                                case '993366': $colorIdxFg = 0x3D; break;
                                case '333399': $colorIdxFg = 0x3E; break;
                                case '333333': $colorIdxFg = 0x3F; break;
                                default:       $colorIdxFg = 0x40; break;
                        }
                        $dataBlockFill = pack('v', $blockFillPatternStyle);
                        $dataBlockFill .= pack('v', $colorIdxFg | ($colorIdxBg << 7));
                }
                if($bFormatProt == 1){
                        $dataBlockProtection = 0;
                        if($conditional->getStyle()->getProtection()->getLocked() == PHPExcel_Style_Protection::PROTECTION_PROTECTED){
                                $dataBlockProtection = 1;
                        }
                        if($conditional->getStyle()->getProtection()->getHidden() == PHPExcel_Style_Protection::PROTECTION_PROTECTED){
                                $dataBlockProtection = 1 << 1;
                        }
                }

                $data     = pack('CCvvVv', $type, $operatorType, $szValue1, $szValue2, $flags, 0x0000);
                if($bFormatFont == 1){ // Block Formatting : OK
                        $data .= $dataBlockFont;
                }
                if($bFormatAlign == 1){
                        $data .= $dataBlockAlign;
                }
                if($bFormatBorder == 1){
                        $data .= $dataBlockBorder;
                }
                if($bFormatFill == 1){ // Block Formatting : OK
                        $data .= $dataBlockFill;
                }
                if($bFormatProt == 1){
                        $data .= $dataBlockProtection;
                }
                if(!is_null($operand1)){
                        $data .= $operand1;
                }
                if(!is_null($operand2)){
                        $data .= $operand2;
                }
                $header   = pack('vv', $record, strlen($data));
                $this->_append($header . $data);
        }

        private function _writeCFHeader(){
                $record   = 0x01B0;                        // Record identifier
                $length   = 0x0016;                        // Bytes to follow

                $numColumnMin = null;
                $numColumnMax = null;
                $numRowMin = null;
                $numRowMax = null;
                $arrConditional = array();
                foreach ($this->_phpSheet->getConditionalStylesCollection() as $cellCoordinate => $conditionalStyles) {
                        foreach ($conditionalStyles as $conditional) {
                                if($conditional->getConditionType() == PHPExcel_Style_Conditional::CONDITION_EXPRESSION
                                                || $conditional->getConditionType() == PHPExcel_Style_Conditional::CONDITION_CELLIS){
                                        if(!in_array($conditional->getHashCode(), $arrConditional)){
                                                $arrConditional[] = $conditional->getHashCode();
                                        }
                                        // Cells
                                        $arrCoord = PHPExcel_Cell::coordinateFromString($cellCoordinate);
                                        if(!is_numeric($arrCoord[0])){
                                                $arrCoord[0] = PHPExcel_Cell::columnIndexFromString($arrCoord[0]);
                                        }
                                        if(is_null($numColumnMin) || ($numColumnMin > $arrCoord[0])){
                                                $numColumnMin = $arrCoord[0];
                                        }
                                        if(is_null($numColumnMax) || ($numColumnMax < $arrCoord[0])){
                                                $numColumnMax = $arrCoord[0];
                                        }
                                        if(is_null($numRowMin) || ($numRowMin > $arrCoord[1])){
                                                $numRowMin = $arrCoord[1];
                                        }
                                        if(is_null($numRowMax) || ($numRowMax < $arrCoord[1])){
                                                $numRowMax = $arrCoord[1];
                                        }
                                }
                        }
                }
                $needRedraw = 1;
                $cellRange = pack('vvvv', $numRowMin-1, $numRowMax-1, $numColumnMin-1, $numColumnMax-1);

                $header   = pack('vv', $record, $length);
                $data     = pack('vv', count($arrConditional), $needRedraw);
                $data     .= $cellRange;
                $data     .= pack('v', 0x0001);
                $data     .= $cellRange;
                $this->_append($header . $data);
        }
}