<?php
/* 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: excelreader.php 124 2017-03-10 05:40:03Z admin $
 * @link http://pear.php.net/package/Spreadsheet_Excel_Reader
 * @see OLE, Spreadsheet_Excel_Writer
 *     
 */
namespace core\extend\excel;

// 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_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=$formatstr=\n";
                            if (isset($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:
 */

?>