<?php

define('NUM_BIG_BLOCK_DEPOT_BLOCKS_POS', 0x2c);
define('SMALL_BLOCK_DEPOT_BLOCK_POS', 0x3c);
define('ROOT_START_BLOCK_POS', 0x30);
define('BIG_BLOCK_SIZE', 0x200);
define('SMALL_BLOCK_SIZE', 0x40);
define('EXTENSION_BLOCK_POS', 0x44);
define('NUM_EXTENSION_BLOCK_POS', 0x48);
define('PROPERTY_STORAGE_BLOCK_SIZE', 0x80);
define('BIG_BLOCK_DEPOT_BLOCKS_POS', 0x4c);
define('SMALL_BLOCK_THRESHOLD', 0x1000);
// property storage offsets
define('SIZE_OF_NAME_POS', 0x40);
define('TYPE_POS', 0x42);
define('START_BLOCK_POS', 0x74);
define('SIZE_POS', 0x78);
define('IDENTIFIER_OLE', pack("CCCCCCCC", 0xd0, 0xcf, 0x11, 0xe0, 0xa1, 0xb1, 0x1a, 0xe1));

//echo 'ROOT_START_BLOCK_POS = '.ROOT_START_BLOCK_POS."\n";
//echo bin2hex($data[ROOT_START_BLOCK_POS])."\n";
//echo "a=";
//echo $data[ROOT_START_BLOCK_POS];
//function log

function GetInt4d($data, $pos)
{
    $value = ord($data[$pos]) | (ord($data[$pos + 1]) << 8) | (ord($data[$pos + 2]) << 16) | (ord($data[$pos + 3]) << 24);
    if($value >= 4294967294){
        $value = -2;
    }
    return $value;
}

class OLERead
{

    var $data = '';

    function OLERead()
    {
        
    }

    function read($sFileName)
    {

        // check if file exist and is readable (Darko Miljanovic)
        if(!is_readable($sFileName)){
            $this->error = 1;
            return false;
        }

        $this->data = @file_get_contents($sFileName);
        if(!$this->data){
            $this->error = 1;
            return false;
        }
        //echo IDENTIFIER_OLE;
        //echo 'start';
        if(substr($this->data, 0, 8) != IDENTIFIER_OLE){
            $this->error = 1;
            return false;
        }
        $this->numBigBlockDepotBlocks = GetInt4d($this->data, NUM_BIG_BLOCK_DEPOT_BLOCKS_POS);
        $this->sbdStartBlock = GetInt4d($this->data, SMALL_BLOCK_DEPOT_BLOCK_POS);
        $this->rootStartBlock = GetInt4d($this->data, ROOT_START_BLOCK_POS);
        $this->extensionBlock = GetInt4d($this->data, EXTENSION_BLOCK_POS);
        $this->numExtensionBlocks = GetInt4d($this->data, NUM_EXTENSION_BLOCK_POS);

        /*
          echo $this->numBigBlockDepotBlocks." ";
          echo $this->sbdStartBlock." ";
          echo $this->rootStartBlock." ";
          echo $this->extensionBlock." ";
          echo $this->numExtensionBlocks." ";
         */
        //echo "sbdStartBlock = $this->sbdStartBlock\n";
        $bigBlockDepotBlocks = array();
        $pos = BIG_BLOCK_DEPOT_BLOCKS_POS;
        // echo "pos = $pos";
        $bbdBlocks = $this->numBigBlockDepotBlocks;

        if($this->numExtensionBlocks != 0){
            $bbdBlocks = (BIG_BLOCK_SIZE - BIG_BLOCK_DEPOT_BLOCKS_POS) / 4;
        }

        for ($i = 0; $i < $bbdBlocks; $i++) {
            $bigBlockDepotBlocks[$i] = GetInt4d($this->data, $pos);
            $pos += 4;
        }


        for ($j = 0; $j < $this->numExtensionBlocks; $j++) {
            $pos = ($this->extensionBlock + 1) * BIG_BLOCK_SIZE;
            $blocksToRead = min($this->numBigBlockDepotBlocks - $bbdBlocks, BIG_BLOCK_SIZE / 4 - 1);

            for ($i = $bbdBlocks; $i < $bbdBlocks + $blocksToRead; $i++) {
                $bigBlockDepotBlocks[$i] = GetInt4d($this->data, $pos);
                $pos += 4;
            }

            $bbdBlocks += $blocksToRead;
            if($bbdBlocks < $this->numBigBlockDepotBlocks){
                $this->extensionBlock = GetInt4d($this->data, $pos);
            }
        }

        // var_dump($bigBlockDepotBlocks);
        // readBigBlockDepot
        $pos = 0;
        $index = 0;
        $this->bigBlockChain = array();

        for ($i = 0; $i < $this->numBigBlockDepotBlocks; $i++) {
            $pos = ($bigBlockDepotBlocks[$i] + 1) * BIG_BLOCK_SIZE;
            //echo "pos = $pos";	
            for ($j = 0; $j < BIG_BLOCK_SIZE / 4; $j++) {
                $this->bigBlockChain[$index] = GetInt4d($this->data, $pos);
                $pos += 4;
                $index++;
            }
        }

        //var_dump($this->bigBlockChain);
        //echo '=====2';
        // readSmallBlockDepot();
        $pos = 0;
        $index = 0;
        $sbdBlock = $this->sbdStartBlock;
        $this->smallBlockChain = array();

        while ($sbdBlock != -2) {

            $pos = ($sbdBlock + 1) * BIG_BLOCK_SIZE;

            for ($j = 0; $j < BIG_BLOCK_SIZE / 4; $j++) {
                $this->smallBlockChain[$index] = GetInt4d($this->data, $pos);
                $pos += 4;
                $index++;
            }

            $sbdBlock = $this->bigBlockChain[$sbdBlock];
        }


        // readData(rootStartBlock)
        $block = $this->rootStartBlock;
        $pos = 0;
        $this->entry = $this->__readData($block);

        /*
          while ($block != -2)  {
          $pos = ($block + 1) * BIG_BLOCK_SIZE;
          $this->entry = $this->entry.substr($this->data, $pos, BIG_BLOCK_SIZE);
          $block = $this->bigBlockChain[$block];
          }
         */
        //echo '==='.$this->entry."===";
        $this->__readPropertySets();
    }

    function __readData($bl)
    {
        $block = $bl;
        $pos = 0;
        $data = '';

        while ($block != -2) {
            $pos = ($block + 1) * BIG_BLOCK_SIZE;
            $data = $data . substr($this->data, $pos, BIG_BLOCK_SIZE);
            //echo "pos = $pos data=$data\n";	
            $block = $this->bigBlockChain[$block];
        }
        return $data;
    }

    function __readPropertySets()
    {
        $offset = 0;
        //var_dump($this->entry);
        while ($offset < strlen($this->entry)) {
            $d = substr($this->entry, $offset, PROPERTY_STORAGE_BLOCK_SIZE);

            $nameSize = ord($d[SIZE_OF_NAME_POS]) | (ord($d[SIZE_OF_NAME_POS + 1]) << 8);

            $type = ord($d[TYPE_POS]);
            //$maxBlock = strlen($d) / BIG_BLOCK_SIZE - 1;

            $startBlock = GetInt4d($d, START_BLOCK_POS);
            $size = GetInt4d($d, SIZE_POS);

            $name = '';
            for ($i = 0; $i < $nameSize; $i++) {
                $name .= $d[$i];
            }

            $name = str_replace("\x00", "", $name);

            $this->props[] = array(
                'name' => $name,
                'type' => $type,
                'startBlock' => $startBlock,
                'size' => $size);

            if(($name == "Workbook") || ($name == "Book")){
                $this->wrkbook = count($this->props) - 1;
            }

            if($name == "Root Entry"){
                $this->rootentry = count($this->props) - 1;
            }

            //echo "name ==$name=\n";


            $offset += PROPERTY_STORAGE_BLOCK_SIZE;
        }
    }

    function getWorkBook()
    {
        if($this->props[$this->wrkbook]['size'] < SMALL_BLOCK_THRESHOLD){
//    	  getSmallBlockStream(PropertyStorage ps)

            $rootdata = $this->__readData($this->props[$this->rootentry]['startBlock']);

            $streamData = '';
            $block = $this->props[$this->wrkbook]['startBlock'];
            //$count = 0;
            $pos = 0;
            while ($block != -2) {
                $pos = $block * SMALL_BLOCK_SIZE;
                $streamData .= substr($rootdata, $pos, SMALL_BLOCK_SIZE);

                $block = $this->smallBlockChain[$block];
            }

            return $streamData;
        } else {

            $numBlocks = $this->props[$this->wrkbook]['size'] / BIG_BLOCK_SIZE;
            if($this->props[$this->wrkbook]['size'] % BIG_BLOCK_SIZE != 0){
                $numBlocks++;
            }

            if($numBlocks == 0)
                return '';

            //echo "numBlocks = $numBlocks\n";
            //byte[] streamData = new byte[numBlocks * BIG_BLOCK_SIZE];
            //print_r($this->wrkbook);
            $streamData = '';
            $block = $this->props[$this->wrkbook]['startBlock'];
            //$count = 0;
            $pos = 0;
            //echo "block = $block";
            while ($block != -2) {
                $pos = ($block + 1) * BIG_BLOCK_SIZE;
                $streamData .= substr($this->data, $pos, BIG_BLOCK_SIZE);
                $block = $this->bigBlockChain[$block];
            }
            //echo 'stream'.$streamData;
            return $streamData;
        }
    }

}

/* vim: set expandtab tabstop=4 shiftwidth=4 softtabstop=4: */

/**
 * A class for reading Microsoft Excel Spreadsheets.
 *
 * Originally developed by Vadim Tkachenko under the name PHPExcelReader.
 * (http://sourceforge.net/projects/phpexcelreader)
 * Based on the Java version by Andy Khan (http://www.andykhan.com).  Now
 * maintained by David Sanders.  Reads only Biff 7 and Biff 8 formats.
 *
 * PHP versions 4 and 5
 *
 * LICENSE: This source file is subject to version 3.0 of the PHP license
 * that is available through the world-wide-web at the following URI:
 * http://www.php.net/license/3_0.txt.  If you did not receive a copy of
 * the PHP License and are unable to obtain it through the web, please
 * send a note to license@php.net so we can mail you a copy immediately.
 *
 * @category   Spreadsheet
 * @package    Spreadsheet_Excel_Reader
 * @author     Vadim Tkachenko <vt@apachephp.com>
 * @license    http://www.php.net/license/3_0.txt  PHP License 3.0
 * @version    CVS: $Id: reader.php 19 2007-03-13 12:42:41Z shangxiao $
 * @link       http://pear.php.net/package/Spreadsheet_Excel_Reader
 * @see        OLE, Spreadsheet_Excel_Writer
 */
//require_once 'PEAR.php';
//require_once 'oleread.php';
//require_once 'OLE.php';

define('SPREADSHEET_EXCEL_READER_BIFF8', 0x600);
define('SPREADSHEET_EXCEL_READER_BIFF7', 0x500);
define('SPREADSHEET_EXCEL_READER_WORKBOOKGLOBALS', 0x5);
define('SPREADSHEET_EXCEL_READER_WORKSHEET', 0x10);

define('SPREADSHEET_EXCEL_READER_TYPE_BOF', 0x809);
define('SPREADSHEET_EXCEL_READER_TYPE_EOF', 0x0a);
define('SPREADSHEET_EXCEL_READER_TYPE_BOUNDSHEET', 0x85);
define('SPREADSHEET_EXCEL_READER_TYPE_DIMENSION', 0x200);
define('SPREADSHEET_EXCEL_READER_TYPE_ROW', 0x208);
define('SPREADSHEET_EXCEL_READER_TYPE_DBCELL', 0xd7);
define('SPREADSHEET_EXCEL_READER_TYPE_FILEPASS', 0x2f);
define('SPREADSHEET_EXCEL_READER_TYPE_NOTE', 0x1c);
define('SPREADSHEET_EXCEL_READER_TYPE_TXO', 0x1b6);
define('SPREADSHEET_EXCEL_READER_TYPE_RK', 0x7e);
define('SPREADSHEET_EXCEL_READER_TYPE_RK2', 0x27e);
define('SPREADSHEET_EXCEL_READER_TYPE_MULRK', 0xbd);
define('SPREADSHEET_EXCEL_READER_TYPE_MULBLANK', 0xbe);
define('SPREADSHEET_EXCEL_READER_TYPE_INDEX', 0x20b);
define('SPREADSHEET_EXCEL_READER_TYPE_SST', 0xfc);
define('SPREADSHEET_EXCEL_READER_TYPE_EXTSST', 0xff);
define('SPREADSHEET_EXCEL_READER_TYPE_CONTINUE', 0x3c);
define('SPREADSHEET_EXCEL_READER_TYPE_LABEL', 0x204);
define('SPREADSHEET_EXCEL_READER_TYPE_LABELSST', 0xfd);
define('SPREADSHEET_EXCEL_READER_TYPE_NUMBER', 0x203);
define('SPREADSHEET_EXCEL_READER_TYPE_NAME', 0x18);
define('SPREADSHEET_EXCEL_READER_TYPE_ARRAY', 0x221);
define('SPREADSHEET_EXCEL_READER_TYPE_STRING', 0x207);
define('SPREADSHEET_EXCEL_READER_TYPE_FORMULA', 0x406);
define('SPREADSHEET_EXCEL_READER_TYPE_FORMULA2', 0x6);
define('SPREADSHEET_EXCEL_READER_TYPE_FORMAT', 0x41e);
define('SPREADSHEET_EXCEL_READER_TYPE_XF', 0xe0);
define('SPREADSHEET_EXCEL_READER_TYPE_BOOLERR', 0x205);
define('SPREADSHEET_EXCEL_READER_TYPE_UNKNOWN', 0xffff);
define('SPREADSHEET_EXCEL_READER_TYPE_NINETEENFOUR', 0x22);
define('SPREADSHEET_EXCEL_READER_TYPE_MERGEDCELLS', 0xE5);

define('SPREADSHEET_EXCEL_READER_UTCOFFSETDAYS', 25569);
define('SPREADSHEET_EXCEL_READER_UTCOFFSETDAYS1904', 24107);
define('SPREADSHEET_EXCEL_READER_MSINADAY', 86400);
//define('SPREADSHEET_EXCEL_READER_MSINADAY', 24 * 60 * 60);
//define('SPREADSHEET_EXCEL_READER_DEF_NUM_FORMAT', "%.2f");
define('SPREADSHEET_EXCEL_READER_DEF_NUM_FORMAT', "%s");


/*
 * Place includes, constant defines and $_GLOBAL settings here.
 * Make sure they have appropriate docblocks to avoid phpDocumentor
 * construing they are documented by the page-level docblock.
 */

/**
 * A class for reading Microsoft Excel Spreadsheets.
 *
 * Originally developed by Vadim Tkachenko under the name PHPExcelReader.
 * (http://sourceforge.net/projects/phpexcelreader)
 * Based on the Java version by Andy Khan (http://www.andykhan.com).  Now
 * maintained by David Sanders.  Reads only Biff 7 and Biff 8 formats.
 *
 * @category   Spreadsheet
 * @package    Spreadsheet_Excel_Reader
 * @author     Vadim Tkachenko <vt@phpapache.com>
 * @copyright  1997-2005 The PHP Group
 * @license    http://www.php.net/license/3_0.txt  PHP License 3.0
 * @version    Release: @package_version@
 * @link       http://pear.php.net/package/PackageName
 * @see        OLE, Spreadsheet_Excel_Writer
 */
class Spreadsheet_Excel_Reader
{

    /**
     * Array of worksheets found
     *
     * @var array
     * @access public
     */
    var $boundsheets = array();

    /**
     * Array of format records found
     * 
     * @var array
     * @access public
     */
    var $formatRecords = array();

    /**
     * todo
     *
     * @var array
     * @access public
     */
    var $sst = array();

    /**
     * Array of worksheets
     *
     * The data is stored in 'cells' and the meta-data is stored in an array
     * called 'cellsInfo'
     *
     * Example:
     *
     * $sheets  -->  'cells'  -->  row --> column --> Interpreted value
     *          -->  'cellsInfo' --> row --> column --> 'type' - Can be 'date', 'number', or 'unknown'
     *                                            --> 'raw' - The raw data that Excel stores for that data cell
     *
     * @var array
     * @access public
     */
    var $sheets = array();

    /**
     * The data returned by OLE
     *
     * @var string
     * @access public
     */
    var $data;

    /**
     * OLE object for reading the file
     *
     * @var OLE object
     * @access private
     */
    var $_ole;

    /**
     * Default encoding
     *
     * @var string
     * @access private
     */
    var $_defaultEncoding;

    /**
     * Default number format
     *
     * @var integer
     * @access private
     */
    var $_defaultFormat = SPREADSHEET_EXCEL_READER_DEF_NUM_FORMAT;

    /**
     * todo
     * List of formats to use for each column
     *
     * @var array
     * @access private
     */
    var $_columnsFormat = array();

    /**
     * todo
     *
     * @var integer
     * @access private
     */
    var $_rowoffset = 1;

    /**
     * todo
     *
     * @var integer
     * @access private
     */
    var $_coloffset = 1;

    /**
     * List of default date formats used by Excel
     *
     * @var array
     * @access public
     */
    var $dateFormats = array(
        0xe => "d/m/Y",
        0xf => "d-M-Y",
        0x10 => "d-M",
        0x11 => "M-Y",
        0x12 => "h:i a",
        0x13 => "h:i:s a",
        0x14 => "H:i",
        0x15 => "H:i:s",
        0x16 => "d/m/Y H:i",
        0x2d => "i:s",
        0x2e => "H:i:s",
        0x2f => "i:s.S");

    /**
     * Default number formats used by Excel
     *
     * @var array
     * @access public
     */
    var $numberFormats = array(
        0x1 => "%1.0f", // "0"
        0x2 => "%1.2f", // "0.00",
        0x3 => "%1.0f", //"#,##0",
        0x4 => "%1.2f", //"#,##0.00",
        0x5 => "%1.0f", /* "$#,##0;($#,##0)", */
        0x6 => '$%1.0f', /* "$#,##0;($#,##0)", */
        0x7 => '$%1.2f', //"$#,##0.00;($#,##0.00)",
        0x8 => '$%1.2f', //"$#,##0.00;($#,##0.00)",
        0x9 => '%1.0f%%', // "0%"
        0xa => '%1.2f%%', // "0.00%"
        0xb => '%1.2f', // 0.00E00",
        0x25 => '%1.0f', // "#,##0;(#,##0)",
        0x26 => '%1.0f', //"#,##0;(#,##0)",
        0x27 => '%1.2f', //"#,##0.00;(#,##0.00)",
        0x28 => '%1.2f', //"#,##0.00;(#,##0.00)",
        0x29 => '%1.0f', //"#,##0;(#,##0)",
        0x2a => '$%1.0f', //"$#,##0;($#,##0)",
        0x2b => '%1.2f', //"#,##0.00;(#,##0.00)",
        0x2c => '$%1.2f', //"$#,##0.00;($#,##0.00)",
        0x30 => '%1.0f');   //"##0.0E0";

    // }}}
    // {{{ Spreadsheet_Excel_Reader()

    /**
     * Constructor
     *
     * Some basic initialisation
     */
    function Spreadsheet_Excel_Reader()
    {
        $this->_ole = new OLERead();
        $this->setUTFEncoder('iconv');
    }

    // }}}
    // {{{ setOutputEncoding()

    /**
     * Set the encoding method
     *
     * @param string Encoding to use
     * @access public
     */
    function setOutputEncoding($encoding)
    {
        $this->_defaultEncoding = $encoding;
    }

    // }}}
    // {{{ setUTFEncoder()

    /**
     *  $encoder = 'iconv' or 'mb'
     *  set iconv if you would like use 'iconv' for encode UTF-16LE to your encoding
     *  set mb if you would like use 'mb_convert_encoding' for encode UTF-16LE to your encoding
     *
     * @access public
     * @param string Encoding type to use.  Either 'iconv' or 'mb'
     */
    function setUTFEncoder($encoder = 'iconv')
    {
        $this->_encoderFunction = '';

        if($encoder == 'iconv'){
            $this->_encoderFunction = function_exists('iconv') ? 'iconv' : '';
        } elseif($encoder == 'mb'){
            $this->_encoderFunction = function_exists('mb_convert_encoding') ?
                    'mb_convert_encoding' :
                    '';
        }
    }

    // }}}
    // {{{ setRowColOffset()

    /**
     * todo
     *
     * @access public
     * @param offset
     */
    function setRowColOffset($iOffset)
    {
        $this->_rowoffset = $iOffset;
        $this->_coloffset = $iOffset;
    }

    // }}}
    // {{{ setDefaultFormat()

    /**
     * Set the default number format
     *
     * @access public
     * @param Default format
     */
    function setDefaultFormat($sFormat)
    {
        $this->_defaultFormat = $sFormat;
    }

    // }}}
    // {{{ setColumnFormat()

    /**
     * Force a column to use a certain format
     *
     * @access public
     * @param integer Column number
     * @param string Format
     */
    function setColumnFormat($column, $sFormat)
    {
        $this->_columnsFormat[$column] = $sFormat;
    }

    // }}}
    // {{{ read()

    /**
     * Read the spreadsheet file using OLE, then parse
     *
     * @access public
     * @param filename
     * @todo return a valid value
     */
    function read($sFileName)
    {
        /*
          require_once 'OLE.php';
          $ole = new OLE();
          $ole->read($sFileName);

          foreach ($ole->_list as $i => $pps) {
          if (($pps->Name == 'Workbook' || $pps->Name == 'Book') &&
          $pps->Size >= SMALL_BLOCK_THRESHOLD) {

          $this->data = $ole->getData($i, 0, $ole->getDataLength($i));
          } elseif ($pps->Name == 'Root Entry') {
          $this->data = $ole->getData($i, 0, $ole->getDataLength($i));
          }
          //var_dump(strlen($ole->getData($i, 0, $ole->getDataLength($i))), $pps->Name, md5($this->data), $ole->getDataLength($i));
          }
          //exit;
          $this->_parse();

          return sizeof($this->sheets) > 0;
         */

        $res = $this->_ole->read($sFileName);

        // oops, something goes wrong (Darko Miljanovic)
        if($res === false){
            // check error code
            if($this->_ole->error == 1){
                // bad file
                die('The filename ' . $sFileName . ' is not readable');
            }
            // check other error codes here (eg bad fileformat, etc...)
        }

        $this->data = $this->_ole->getWorkBook();


        /*
          $res = $this->_ole->read($sFileName);

          if ($this->isError($res)) {
          //        var_dump($res);
          return $this->raiseError($res);
          }

          $total = $this->_ole->ppsTotal();
          for ($i = 0; $i < $total; $i++) {
          if ($this->_ole->isFile($i)) {
          $type = unpack("v", $this->_ole->getData($i, 0, 2));
          if ($type[''] == 0x0809)  { // check if it's a BIFF stream
          $this->_index = $i;
          $this->data = $this->_ole->getData($i, 0, $this->_ole->getDataLength($i));
          break;
          }
          }
          }

          if ($this->_index === null) {
          return $this->raiseError("$file doesn't seem to be an Excel file");
          }

         */

        //echo "data =".$this->data;
        //$this->readRecords();
        $this->_parse();
    }

    // }}}
    // {{{ _parse()

    /**
     * Parse a workbook
     *
     * @access private
     * @return bool
     */
    function _parse()
    {
        $pos = 0;

        $code = ord($this->data[$pos]) | ord($this->data[$pos + 1]) << 8;
        $length = ord($this->data[$pos + 2]) | ord($this->data[$pos + 3]) << 8;

        $version = ord($this->data[$pos + 4]) | ord($this->data[$pos + 5]) << 8;
        $substreamType = ord($this->data[$pos + 6]) | ord($this->data[$pos + 7]) << 8;
        //echo "Start parse code=".base_convert($code,10,16)." version=".base_convert($version,10,16)." substreamType=".base_convert($substreamType,10,16).""."\n";

        if(($version != SPREADSHEET_EXCEL_READER_BIFF8) &&
                ($version != SPREADSHEET_EXCEL_READER_BIFF7)){
            return false;
        }

        if($substreamType != SPREADSHEET_EXCEL_READER_WORKBOOKGLOBALS){
            return false;
        }

        //print_r($rec);
        $pos += $length + 4;

        $code = ord($this->data[$pos]) | ord($this->data[$pos + 1]) << 8;
        $length = ord($this->data[$pos + 2]) | ord($this->data[$pos + 3]) << 8;

        while ($code != SPREADSHEET_EXCEL_READER_TYPE_EOF) {
            switch ($code) {
                case SPREADSHEET_EXCEL_CREADER_TYPE_SST:
                    //echo "Type_SST\n";
                    $spos = $pos + 4;
                    $limitpos = $spos + $length;
                    $uniqueStrings = $this->_GetInt4d($this->data, $spos + 4);
                    $spos += 8;
                    for ($i = 0; $i < $uniqueStrings; $i++) {
                        // Read in the number of characters
                        if($spos == $limitpos){
                            $opcode = ord($this->data[$spos]) | ord($this->data[$spos + 1]) << 8;
                            $conlength = ord($this->data[$spos + 2]) | ord($this->data[$spos + 3]) << 8;
                            if($opcode != 0x3c){
                                return -1;
                            }
                            $spos += 4;
                            $limitpos = $spos + $conlength;
                        }
                        $numChars = ord($this->data[$spos]) | (ord($this->data[$spos + 1]) << 8);
                        //echo "i = $i pos = $pos numChars = $numChars ";
                        $spos += 2;
                        $optionFlags = ord($this->data[$spos]);
                        $spos++;
                        $asciiEncoding = (($optionFlags & 0x01) == 0);
                        $extendedString = ( ($optionFlags & 0x04) != 0);

                        // See if string contains formatting information
                        $richString = ( ($optionFlags & 0x08) != 0);

                        if($richString){
                            // Read in the crun
                            $formattingRuns = ord($this->data[$spos]) | (ord($this->data[$spos + 1]) << 8);
                            $spos += 2;
                        }

                        if($extendedString){
                            // Read in cchExtRst
                            $extendedRunLength = $this->_GetInt4d($this->data, $spos);
                            $spos += 4;
                        }

                        $len = ($asciiEncoding) ? $numChars : $numChars * 2;
                        if($spos + $len < $limitpos){
                            $retstr = substr($this->data, $spos, $len);
                            $spos += $len;
                        } else {
                            // found countinue
                            $retstr = substr($this->data, $spos, $limitpos - $spos);
                            $bytesRead = $limitpos - $spos;
                            $charsLeft = $numChars - (($asciiEncoding) ? $bytesRead : ($bytesRead / 2));
                            $spos = $limitpos;

                            while ($charsLeft > 0) {
                                $opcode = ord($this->data[$spos]) | ord($this->data[$spos + 1]) << 8;
                                $conlength = ord($this->data[$spos + 2]) | ord($this->data[$spos + 3]) << 8;
                                if($opcode != 0x3c){
                                    return -1;
                                }
                                $spos += 4;
                                $limitpos = $spos + $conlength;
                                $option = ord($this->data[$spos]);
                                $spos += 1;
                                if($asciiEncoding && ($option == 0)){
                                    $len = min($charsLeft, $limitpos - $spos); // min($charsLeft, $conlength);
                                    $retstr .= substr($this->data, $spos, $len);
                                    $charsLeft -= $len;
                                    $asciiEncoding = true;
                                } elseif(!$asciiEncoding && ($option != 0)){
                                    $len = min($charsLeft * 2, $limitpos - $spos); // min($charsLeft, $conlength);
                                    $retstr .= substr($this->data, $spos, $len);
                                    $charsLeft -= $len / 2;
                                    $asciiEncoding = false;
                                } elseif(!$asciiEncoding && ($option == 0)){
                                    // Bummer - the string starts off as Unicode, but after the
                                    // continuation it is in straightforward ASCII encoding
                                    $len = min($charsLeft, $limitpos - $spos); // min($charsLeft, $conlength);
                                    for ($j = 0; $j < $len; $j++) {
                                        $retstr .= $this->data[$spos + $j] . chr(0);
                                    }
                                    $charsLeft -= $len;
                                    $asciiEncoding = false;
                                } else {
                                    $newstr = '';
                                    for ($j = 0; $j < strlen($retstr); $j++) {
                                        $newstr = $retstr[$j] . chr(0);
                                    }
                                    $retstr = $newstr;
                                    $len = min($charsLeft * 2, $limitpos - $spos); // min($charsLeft, $conlength);
                                    $retstr .= substr($this->data, $spos, $len);
                                    $charsLeft -= $len / 2;
                                    $asciiEncoding = false;
                                    //echo "Izavrat\n";
                                }
                                $spos += $len;
                            }
                        }
                        $retstr = ($asciiEncoding) ? $retstr : $this->_encodeUTF16($retstr);
//                                              echo "Str $i = $retstr\n";
                        if($richString){
                            $spos += 4 * $formattingRuns;
                        }

                        // For extended strings, skip over the extended string data
                        if($extendedString){
                            $spos += $extendedRunLength;
                        }
                        //if ($retstr == 'Derby'){
                        //      echo "bb\n";
                        //}
                        $this->sst[] = $retstr;
                    }
                    /* $continueRecords = array();
                      while ($this->getNextCode() == Type_CONTINUE) {
                      $continueRecords[] = &$this->nextRecord();
                      }
                      //echo " 1 Type_SST\n";
                      $this->shareStrings = new SSTRecord($r, $continueRecords);
                      //print_r($this->shareStrings->strings);
                     */
                    // echo 'SST read: '.($time_end-$time_start)."\n";
                    break;

                case SPREADSHEET_EXCEL_READER_TYPE_FILEPASS:
                    return false;
                    break;
                case SPREADSHEET_EXCEL_READER_TYPE_NAME:
                    //echo "Type_NAME\n";
                    break;
                case SPREADSHEET_EXCEL_READER_TYPE_FORMAT:
                    $indexCode = ord($this->data[$pos + 4]) | ord($this->data[$pos + 5]) << 8;

                    if($version == SPREADSHEET_EXCEL_READER_BIFF8){
                        $numchars = ord($this->data[$pos + 6]) | ord($this->data[$pos + 7]) << 8;
                        if(ord($this->data[$pos + 8]) == 0){
                            $formatString = substr($this->data, $pos + 9, $numchars);
                        } else {
                            $formatString = substr($this->data, $pos + 9, $numchars * 2);
                        }
                    } else {
                        $numchars = ord($this->data[$pos + 6]);
                        $formatString = substr($this->data, $pos + 7, $numchars * 2);
                    }

                    $this->formatRecords[$indexCode] = $formatString;
                    // echo "Type.FORMAT\n";
                    break;
                case SPREADSHEET_EXCEL_READER_TYPE_XF:
                    //global $dateFormats, $numberFormats;
                    $indexCode = ord($this->data[$pos + 6]) | ord($this->data[$pos + 7]) << 8;
                    //echo "\nType.XF ".count($this->formatRecords['xfrecords'])." $indexCode ";
                    if(array_key_exists($indexCode, $this->dateFormats)){
                        //echo "isdate ".$dateFormats[$indexCode];
                        $this->formatRecords['xfrecords'][] = array(
                            'type' => 'date',
                            'format' => $this->dateFormats[$indexCode]
                        );
                    } elseif(array_key_exists($indexCode, $this->numberFormats)){
                        //echo "isnumber ".$this->numberFormats[$indexCode];
                        $this->formatRecords['xfrecords'][] = array(
                            'type' => 'number',
                            'format' => $this->numberFormats[$indexCode]
                        );
                    } else {
                        $isdate = FALSE;
                        if($indexCode > 0){
                            if(isset($this->formatRecords[$indexCode]))
                                $formatstr = $this->formatRecords[$indexCode];
                            //echo '.other.';
                            //echo "\ndate-time=$formatstr=\n";
                            if($formatstr)
                                if(preg_match("/[^hmsday\/\-:\s]/i", $formatstr) == 0){ // found day and time format
                                    $isdate = TRUE;
                                    $formatstr = str_replace('mm', 'i', $formatstr);
                                    $formatstr = str_replace('h', 'H', $formatstr);
                                    //echo "\ndate-time $formatstr \n";
                                }
                        }

                        if($isdate){
                            $this->formatRecords['xfrecords'][] = array(
                                'type' => 'date',
                                'format' => $formatstr,
                            );
                        } else {
                            $this->formatRecords['xfrecords'][] = array(
                                'type' => 'other',
                                'format' => '',
                                'code' => $indexCode
                            );
                        }
                    }
                    //echo "\n";
                    break;
                case SPREADSHEET_EXCEL_READER_TYPE_NINETEENFOUR:
                    //echo "Type.NINETEENFOUR\n";
                    $this->nineteenFour = (ord($this->data[$pos + 4]) == 1);
                    break;
                case SPREADSHEET_EXCEL_READER_TYPE_BOUNDSHEET:
                    //echo "Type.BOUNDSHEET\n";
                    $rec_offset = $this->_GetInt4d($this->data, $pos + 4);
                    $rec_typeFlag = ord($this->data[$pos + 8]);
                    $rec_visibilityFlag = ord($this->data[$pos + 9]);
                    $rec_length = ord($this->data[$pos + 10]);

                    if($version == SPREADSHEET_EXCEL_READER_BIFF8){
                        $chartype = ord($this->data[$pos + 11]);
                        if($chartype == 0){
                            $rec_name = substr($this->data, $pos + 12, $rec_length);
                        } else {
                            $rec_name = $this->_encodeUTF16(substr($this->data, $pos + 12, $rec_length * 2));
                        }
                    } elseif($version == SPREADSHEET_EXCEL_READER_BIFF7){
                        $rec_name = substr($this->data, $pos + 11, $rec_length);
                    }
                    $this->boundsheets[] = array('name' => $rec_name,
                        'offset' => $rec_offset);

                    break;
            }

            //echo "Code = ".base_convert($r['code'],10,16)."\n";
            $pos += $length + 4;
            $code = ord($this->data[$pos]) | ord($this->data[$pos + 1]) << 8;
            $length = ord($this->data[$pos + 2]) | ord($this->data[$pos + 3]) << 8;

            //$r = &$this->nextRecord();
            //echo "1 Code = ".base_convert($r['code'],10,16)."\n";
        }

        foreach ($this->boundsheets as $key => $val) {
            $this->sn = $key;
            $this->_parsesheet($val['offset']);
        }
        return true;
    }

    /**
     * Parse a worksheet
     *
     * @access private
     * @param todo
     * @todo fix return codes
     */
    function _parsesheet($spos)
    {
        $cont = true;
        // read BOF
        $code = ord($this->data[$spos]) | ord($this->data[$spos + 1]) << 8;
        $length = ord($this->data[$spos + 2]) | ord($this->data[$spos + 3]) << 8;

        $version = ord($this->data[$spos + 4]) | ord($this->data[$spos + 5]) << 8;
        $substreamType = ord($this->data[$spos + 6]) | ord($this->data[$spos + 7]) << 8;

        if(($version != SPREADSHEET_EXCEL_READER_BIFF8) && ($version != SPREADSHEET_EXCEL_READER_BIFF7)){
            return -1;
        }

        if($substreamType != SPREADSHEET_EXCEL_READER_WORKSHEET){
            return -2;
        }
        //echo "Start parse code=".base_convert($code,10,16)." version=".base_convert($version,10,16)." substreamType=".base_convert($substreamType,10,16).""."\n";
        $spos += $length + 4;
        //var_dump($this->formatRecords);
        //echo "code $code $length";
        while ($cont) {
            //echo "mem= ".memory_get_usage()."\n";
//            $r = &$this->file->nextRecord();
            $lowcode = ord($this->data[$spos]);
            if($lowcode == SPREADSHEET_EXCEL_READER_TYPE_EOF)
                break;
            $code = $lowcode | ord($this->data[$spos + 1]) << 8;
            $length = ord($this->data[$spos + 2]) | ord($this->data[$spos + 3]) << 8;
            $spos += 4;
            $this->sheets[$this->sn]['maxrow'] = $this->_rowoffset - 1;
            $this->sheets[$this->sn]['maxcol'] = $this->_coloffset - 1;
            //echo "Code=".base_convert($code,10,16)." $code\n";
            unset($this->rectype);
            $this->multiplier = 1; // need for format with %
            switch ($code) {
                case SPREADSHEET_EXCEL_READER_TYPE_DIMENSION:
                    //echo 'Type_DIMENSION ';
                    if(!isset($this->numRows)){
                        if(($length == 10) || ($version == SPREADSHEET_EXCEL_READER_BIFF7)){
                            $this->sheets[$this->sn]['numRows'] = ord($this->data[$spos + 2]) | ord($this->data[$spos + 3]) << 8;
                            $this->sheets[$this->sn]['numCols'] = ord($this->data[$spos + 6]) | ord($this->data[$spos + 7]) << 8;
                        } else {
                            $this->sheets[$this->sn]['numRows'] = ord($this->data[$spos + 4]) | ord($this->data[$spos + 5]) << 8;
                            $this->sheets[$this->sn]['numCols'] = ord($this->data[$spos + 10]) | ord($this->data[$spos + 11]) << 8;
                        }
                    }
                    //echo 'numRows '.$this->numRows.' '.$this->numCols."\n";
                    break;
                case SPREADSHEET_EXCEL_READER_TYPE_MERGEDCELLS:
                    $cellRanges = ord($this->data[$spos]) | ord($this->data[$spos + 1]) << 8;
                    for ($i = 0; $i < $cellRanges; $i++) {
                        $fr = ord($this->data[$spos + 8 * $i + 2]) | ord($this->data[$spos + 8 * $i + 3]) << 8;
                        $lr = ord($this->data[$spos + 8 * $i + 4]) | ord($this->data[$spos + 8 * $i + 5]) << 8;
                        $fc = ord($this->data[$spos + 8 * $i + 6]) | ord($this->data[$spos + 8 * $i + 7]) << 8;
                        $lc = ord($this->data[$spos + 8 * $i + 8]) | ord($this->data[$spos + 8 * $i + 9]) << 8;
                        //$this->sheets[$this->sn]['mergedCells'][] = array($fr + 1, $fc + 1, $lr + 1, $lc + 1);
                        if($lr - $fr > 0){
                            $this->sheets[$this->sn]['cellsInfo'][$fr + 1][$fc + 1]['rowspan'] = $lr - $fr + 1;
                        }
                        if($lc - $fc > 0){
                            $this->sheets[$this->sn]['cellsInfo'][$fr + 1][$fc + 1]['colspan'] = $lc - $fc + 1;
                        }
                    }
                    //echo "Merged Cells $cellRanges $lr $fr $lc $fc\n";
                    break;
                case SPREADSHEET_EXCEL_READER_TYPE_RK:
                case SPREADSHEET_EXCEL_READER_TYPE_RK2:
                    //echo 'SPREADSHEET_EXCEL_READER_TYPE_RK'."\n";
                    $row = ord($this->data[$spos]) | ord($this->data[$spos + 1]) << 8;
                    $column = ord($this->data[$spos + 2]) | ord($this->data[$spos + 3]) << 8;
                    $rknum = $this->_GetInt4d($this->data, $spos + 6);
                    $numValue = $this->_GetIEEE754($rknum);
                    //echo $numValue." ";
                    if($this->isDate($spos)){
                        list($string, $raw) = $this->createDate($numValue);
                    } else {
                        $raw = $numValue;
                        if(isset($this->_columnsFormat[$column + 1])){
                            $this->curformat = $this->_columnsFormat[$column + 1];
                        }
                        $string = sprintf($this->curformat, $numValue * $this->multiplier);
                        //$this->addcell(RKRecord($r));
                    }
                    $this->addcell($row, $column, $string, $raw);
                    //echo "Type_RK $row $column $string $raw {$this->curformat}\n";
                    break;
                case SPREADSHEET_EXCEL_READER_TYPE_LABELSST:
                    $row = ord($this->data[$spos]) | ord($this->data[$spos + 1]) << 8;
                    $column = ord($this->data[$spos + 2]) | ord($this->data[$spos + 3]) << 8;
                    $xfindex = ord($this->data[$spos + 4]) | ord($this->data[$spos + 5]) << 8;
                    $index = $this->_GetInt4d($this->data, $spos + 6);
                    //var_dump($this->sst);
                    $this->addcell($row, $column, $this->sst[$index]);
                    //echo "LabelSST $row $column $string\n";
                    break;
                case SPREADSHEET_EXCEL_READER_TYPE_MULRK:
                    $row = ord($this->data[$spos]) | ord($this->data[$spos + 1]) << 8;
                    $colFirst = ord($this->data[$spos + 2]) | ord($this->data[$spos + 3]) << 8;
                    $colLast = ord($this->data[$spos + $length - 2]) | ord($this->data[$spos + $length - 1]) << 8;
                    $columns = $colLast - $colFirst + 1;
                    $tmppos = $spos + 4;
                    for ($i = 0; $i < $columns; $i++) {
                        $numValue = $this->_GetIEEE754($this->_GetInt4d($this->data, $tmppos + 2));
                        if($this->isDate($tmppos - 4)){
                            list($string, $raw) = $this->createDate($numValue);
                        } else {
                            $raw = $numValue;
                            if(isset($this->_columnsFormat[$colFirst + $i + 1])){
                                $this->curformat = $this->_columnsFormat[$colFirst + $i + 1];
                            }
                            $string = sprintf($this->curformat, $numValue * $this->multiplier);
                        }
                        //$rec['rknumbers'][$i]['xfindex'] = ord($rec['data'][$pos]) | ord($rec['data'][$pos+1]) << 8;
                        $tmppos += 6;
                        $this->addcell($row, $colFirst + $i, $string, $raw);
                        //echo "MULRK $row ".($colFirst + $i)." $string\n";
                    }
                    //MulRKRecord($r);
                    // Get the individual cell records from the multiple record
                    //$num = ;

                    break;
                case SPREADSHEET_EXCEL_READER_TYPE_NUMBER:
                    $row = ord($this->data[$spos]) | ord($this->data[$spos + 1]) << 8;
                    $column = ord($this->data[$spos + 2]) | ord($this->data[$spos + 3]) << 8;
                    $tmp = unpack("ddouble", substr($this->data, $spos + 6, 8)); // It machine machine dependent
                    if($this->isDate($spos)){
                        list($string, $raw) = $this->createDate($tmp['double']);
                        //   $this->addcell(DateRecord($r, 1));
                    } else {
                        //$raw = $tmp[''];
                        if(isset($this->_columnsFormat[$column + 1])){
                            $this->curformat = $this->_columnsFormat[$column + 1];
                        }
                        $raw = $this->createNumber($spos);
                        $string = sprintf($this->curformat, $raw * $this->multiplier);

                        //   $this->addcell(NumberRecord($r));
                    }
                    $this->addcell($row, $column, $string, $raw);
                    //echo "Number $row $column $string\n";
                    break;
                case SPREADSHEET_EXCEL_READER_TYPE_FORMULA:
                case SPREADSHEET_EXCEL_READER_TYPE_FORMULA2:
                    $row = ord($this->data[$spos]) | ord($this->data[$spos + 1]) << 8;
                    $column = ord($this->data[$spos + 2]) | ord($this->data[$spos + 3]) << 8;
                    if((ord($this->data[$spos + 6]) == 0) && (ord($this->data[$spos + 12]) == 255) && (ord($this->data[$spos + 13]) == 255)){
                        //String formula. Result follows in a STRING record
                        //echo "FORMULA $row $column Formula with a string<br>\n";
                    } elseif((ord($this->data[$spos + 6]) == 1) && (ord($this->data[$spos + 12]) == 255) && (ord($this->data[$spos + 13]) == 255)){
                        //Boolean formula. Result is in +2; 0=false,1=true
                    } elseif((ord($this->data[$spos + 6]) == 2) && (ord($this->data[$spos + 12]) == 255) && (ord($this->data[$spos + 13]) == 255)){
                        //Error formula. Error code is in +2;
                    } elseif((ord($this->data[$spos + 6]) == 3) && (ord($this->data[$spos + 12]) == 255) && (ord($this->data[$spos + 13]) == 255)){
                        //Formula result is a null string.
                    } else {
                        // result is a number, so first 14 bytes are just like a _NUMBER record
                        $tmp = unpack("ddouble", substr($this->data, $spos + 6, 8)); // It machine machine dependent
                        if($this->isDate($spos)){
                            list($string, $raw) = $this->createDate($tmp['double']);
                            //   $this->addcell(DateRecord($r, 1));
                        } else {
                            //$raw = $tmp[''];
                            if(isset($this->_columnsFormat[$column + 1])){
                                $this->curformat = $this->_columnsFormat[$column + 1];
                            }
                            $raw = $this->createNumber($spos);
                            $string = sprintf($this->curformat, $raw * $this->multiplier);

                            //   $this->addcell(NumberRecord($r));
                        }
                        $this->addcell($row, $column, $string, $raw);
                        //echo "Number $row $column $string\n";
                    }
                    break;
                case SPREADSHEET_EXCEL_READER_TYPE_BOOLERR:
                    $row = ord($this->data[$spos]) | ord($this->data[$spos + 1]) << 8;
                    $column = ord($this->data[$spos + 2]) | ord($this->data[$spos + 3]) << 8;
                    $string = ord($this->data[$spos + 6]);
                    $this->addcell($row, $column, $string);
                    //echo 'Type_BOOLERR '."\n";
                    break;
                case SPREADSHEET_EXCEL_READER_TYPE_ROW:
                case SPREADSHEET_EXCEL_READER_TYPE_DBCELL:
                case SPREADSHEET_EXCEL_READER_TYPE_MULBLANK:
                    break;
                case SPREADSHEET_EXCEL_READER_TYPE_LABEL:
                    $row = ord($this->data[$spos]) | ord($this->data[$spos + 1]) << 8;
                    $column = ord($this->data[$spos + 2]) | ord($this->data[$spos + 3]) << 8;
                    $this->addcell($row, $column, substr($this->data, $spos + 8, ord($this->data[$spos + 6]) | ord($this->data[$spos + 7]) << 8));

                    // $this->addcell(LabelRecord($r));
                    break;

                case SPREADSHEET_EXCEL_READER_TYPE_EOF:
                    $cont = false;
                    break;
                default:
                    //echo ' unknown :'.base_convert($r['code'],10,16)."\n";
                    break;
            }
            $spos += $length;
        }

        if(!isset($this->sheets[$this->sn]['numRows']))
            $this->sheets[$this->sn]['numRows'] = $this->sheets[$this->sn]['maxrow'];
        if(!isset($this->sheets[$this->sn]['numCols']))
            $this->sheets[$this->sn]['numCols'] = $this->sheets[$this->sn]['maxcol'];
    }

    /**
     * Check whether the current record read is a date
     *
     * @param todo
     * @return boolean True if date, false otherwise
     */
    function isDate($spos)
    {
        //$xfindex = GetInt2d(, 4);
        $xfindex = ord($this->data[$spos + 4]) | ord($this->data[$spos + 5]) << 8;
        //echo 'check is date '.$xfindex.' '.$this->formatRecords['xfrecords'][$xfindex]['type']."\n";
        //var_dump($this->formatRecords['xfrecords'][$xfindex]);
        if($this->formatRecords['xfrecords'][$xfindex]['type'] == 'date'){
            $this->curformat = $this->formatRecords['xfrecords'][$xfindex]['format'];
            $this->rectype = 'date';
            return true;
        } else {
            if($this->formatRecords['xfrecords'][$xfindex]['type'] == 'number'){
                $this->curformat = $this->formatRecords['xfrecords'][$xfindex]['format'];
                $this->rectype = 'number';
                if(($xfindex == 0x9) || ($xfindex == 0xa)){
                    $this->multiplier = 100;
                }
            } else {
                $this->curformat = $this->_defaultFormat;
                $this->rectype = 'unknown';
            }
            return false;
        }
    }

    //}}}
    //{{{ createDate()

    /**
     * Convert the raw Excel date into a human readable format
     *
     * Dates in Excel are stored as number of seconds from an epoch.  On 
     * Windows, the epoch is 30/12/1899 and on Mac it's 01/01/1904
     *
     * @access private
     * @param integer The raw Excel value to convert
     * @return array First element is the converted date, the second element is number a unix timestamp
     */
    function createDate($numValue)
    {
        if($numValue > 1){
            $utcDays = $numValue - ($this->nineteenFour ? SPREADSHEET_EXCEL_READER_UTCOFFSETDAYS1904 : SPREADSHEET_EXCEL_READER_UTCOFFSETDAYS);
            $utcValue = round(($utcDays + 1) * SPREADSHEET_EXCEL_READER_MSINADAY);
            $string = date($this->curformat, $utcValue);
            $raw = $utcValue;
        } else {
            $raw = $numValue;
            $hours = floor($numValue * 24);
            $mins = floor($numValue * 24 * 60) - $hours * 60;
            $secs = floor($numValue * SPREADSHEET_EXCEL_READER_MSINADAY) - $hours * 60 * 60 - $mins * 60;
            $string = date($this->curformat, mktime($hours, $mins, $secs));
        }

        return array($string, $raw);
    }

    function createNumber($spos)
    {
        $rknumhigh = $this->_GetInt4d($this->data, $spos + 10);
        $rknumlow = $this->_GetInt4d($this->data, $spos + 6);
        //for ($i=0; $i<8; $i++) { echo ord($this->data[$i+$spos+6]) . " "; } echo "<br>";
        $sign = ($rknumhigh & 0x80000000) >> 31;
        $exp = ($rknumhigh & 0x7ff00000) >> 20;
        $mantissa = (0x100000 | ($rknumhigh & 0x000fffff));
        $mantissalow1 = ($rknumlow & 0x80000000) >> 31;
        $mantissalow2 = ($rknumlow & 0x7fffffff);
        $value = $mantissa / pow(2, (20 - ($exp - 1023)));
        if($mantissalow1 != 0)
            $value += 1 / pow(2, (21 - ($exp - 1023)));
        $value += $mantissalow2 / pow(2, (52 - ($exp - 1023)));
        //echo "Sign = $sign, Exp = $exp, mantissahighx = $mantissa, mantissalow1 = $mantissalow1, mantissalow2 = $mantissalow2<br>\n";
        if($sign){
            $value = -1 * $value;
        }
        return $value;
    }

    function addcell($row, $col, $string, $raw = '')
    {
        //echo "ADD cel $row-$col $string\n";
        $this->sheets[$this->sn]['maxrow'] = max($this->sheets[$this->sn]['maxrow'], $row + $this->_rowoffset);
        $this->sheets[$this->sn]['maxcol'] = max($this->sheets[$this->sn]['maxcol'], $col + $this->_coloffset);
        $this->sheets[$this->sn]['cells'][$row + $this->_rowoffset][$col + $this->_coloffset] = $string;
        if($raw)
            $this->sheets[$this->sn]['cellsInfo'][$row + $this->_rowoffset][$col + $this->_coloffset]['raw'] = $raw;
        if(isset($this->rectype))
            $this->sheets[$this->sn]['cellsInfo'][$row + $this->_rowoffset][$col + $this->_coloffset]['type'] = $this->rectype;
    }

    function _GetIEEE754($rknum)
    {
        if(($rknum & 0x02) != 0){
            $value = $rknum >> 2;
        } else {
//mmp
// first comment out the previously existing 7 lines of code here
//                $tmp = unpack("d", pack("VV", 0, ($rknum & 0xfffffffc)));
//                //$value = $tmp[''];
//                if (array_key_exists(1, $tmp)) {
//                    $value = $tmp[1];
//                } else {
//                    $value = $tmp[''];
//                }
// I got my info on IEEE754 encoding from
// http://research.microsoft.com/~hollasch/cgindex/coding/ieeefloat.html
// The RK format calls for using only the most significant 30 bits of the
// 64 bit floating point value. The other 34 bits are assumed to be 0
// So, we use the upper 30 bits of $rknum as follows...
            $sign = ($rknum & 0x80000000) >> 31;
            $exp = ($rknum & 0x7ff00000) >> 20;
            $mantissa = (0x100000 | ($rknum & 0x000ffffc));
            $value = $mantissa / pow(2, (20 - ($exp - 1023)));
            if($sign){
                $value = -1 * $value;
            }
//end of changes by mmp
        }

        if(($rknum & 0x01) != 0){
            $value /= 100;
        }
        return $value;
    }

    function _encodeUTF16($string)
    {
        $result = $string;
        if($this->_defaultEncoding){
            switch ($this->_encoderFunction) {
                case 'iconv' : $result = iconv('UTF-16LE', $this->_defaultEncoding, $string);
                    break;
                case 'mb_convert_encoding' : $result = mb_convert_encoding($string, $this->_defaultEncoding, 'UTF-16LE');
                    break;
            }
        }
        return $result;
    }

    function _GetInt4d($data, $pos)
    {
        $value = ord($data[$pos]) | (ord($data[$pos + 1]) << 8) | (ord($data[$pos + 2]) << 16) | (ord($data[$pos + 3]) << 24);
        if($value >= 4294967294){
            $value = -2;
        }
        return $value;
    }

}

/*
 * Local variables:
 * tab-width: 4
 * c-basic-offset: 4
 * c-hanging-comment-ender-p: nil
 * End:
 */
?>
