Location: PHPKode > projects > Sphider Plus > sphider-plus_v.2.9/converter/xls_reader.php
<?php

/* o------------------------------------------------------------------------------o
 *
 * 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.
 *
 *  Adapted for Sphider-plus application by Rolf Kellner [Tec] March. 2010
 *
 * o------------------------------------------------------------------------------o */

    //require_once 'oleread.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");

    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('TOTAL-ERROR. The file ' . $sFileName . ' is not readable');
                }
                $res = "TOTAL-.-ERROR. The file ' . $sFileName . 'is not readable'";
                return ($res);
                // check other error codes here (eg bad fileformat, etc...)

                // 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_READER_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;
        }

    }

    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;
            }
        }

    }
?>
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