<?php
/* vim: set expandtab tabstop=4 shiftwidth=4: */
// +----------------------------------------------------------------------+
// | PHP Version 4                                                        |
// +----------------------------------------------------------------------+
// | Copyright (c) 1997-2002 The PHP Group                                |
// +----------------------------------------------------------------------+
// | This source file is subject to version 2.02 of the PHP license,      |
// | that is bundled with this package in the file LICENSE, and is        |
// | available at through the world-wide-web at                           |
// | http://www.php.net/license/2_02.txt.                                 |
// | If you did not receive a copy of the PHP license and are unable to   |
// | obtain it through the world-wide-web, please send a note to          |
// | license@php.net so we can mail you a copy immediately.               |
// +----------------------------------------------------------------------+
// | Author: Xavier Noguer <xnoguer@php.net>                              |
// | Based on OLE::Storage_Lite by Kawai, Takanori                        |
// +----------------------------------------------------------------------+
//
// $Id: Root.php,v 1.9 2005/04/23 21:53:49 dufuz Exp $


/**
* Class for creating Root PPS's for OLE containers
*
* @author   Xavier Noguer <xnoguer@php.net>
* @category PHPExcel
* @package  PHPExcel_Shared_OLE
*/
class PHPExcel_Shared_OLE_PPS_Root extends PHPExcel_Shared_OLE_PPS
	{

	/**
	 * Directory for temporary files
	 * @var string
	 */
	protected $_tmp_dir		= NULL;

	protected $_tempDir = NULL;
	protected $_BIG_BLOCK_SIZE = NULL;
	protected $_SMALL_BLOCK_SIZE = NULL;
	protected $_FILEH_ = false;
	/**
	 * @param integer $time_1st A timestamp
	 * @param integer $time_2nd A timestamp
	 */
	public function __construct($time_1st, $time_2nd, $raChild)
	{
		$this->_tempDir = PHPExcel_Shared_File::sys_get_temp_dir();

		parent::__construct(
		   null,
		   PHPExcel_Shared_OLE::Asc2Ucs('Root Entry'),
		   PHPExcel_Shared_OLE::OLE_PPS_TYPE_ROOT,
		   null,
		   null,
		   null,
		   $time_1st,
		   $time_2nd,
		   null,
		   $raChild);
	}

	/**
	* Method for saving the whole OLE container (including files).
	* In fact, if called with an empty argument (or '-'), it saves to a
	* temporary file and then outputs it's contents to stdout.
	* If a resource pointer to a stream created by fopen() is passed
	* it will be used, but you have to close such stream by yourself.
	*
	* @param string|resource $filename The name of the file or stream where to save the OLE container.
	* @access public
	* @return mixed true on success
	*/
	public function save($filename)
	{
		// Initial Setting for saving
		$this->_BIG_BLOCK_SIZE  = pow(2,
					  ((isset($this->_BIG_BLOCK_SIZE))? self::_adjust2($this->_BIG_BLOCK_SIZE)  : 9));
		$this->_SMALL_BLOCK_SIZE= pow(2,
					  ((isset($this->_SMALL_BLOCK_SIZE))?  self::_adjust2($this->_SMALL_BLOCK_SIZE): 6));

		if (is_resource($filename)) {
		    $this->_FILEH_ = $filename;
		} else if ($filename == '-' || $filename == '') {
			if ($this->_tmp_dir === NULL)
				$this->_tmp_dir = PHPExcel_Shared_File::sys_get_temp_dir();
			$this->_tmp_filename = tempnam($this->_tmp_dir, "OLE_PPS_Root");
			$this->_FILEH_ = fopen($this->_tmp_filename,"w+b");
			if ($this->_FILEH_ == false) {
				throw new Exception("Can't create temporary file.");
			}
		} else {
			$this->_FILEH_ = fopen($filename, "wb");
		}
		if ($this->_FILEH_ == false) {
			throw new Exception("Can't open $filename. It may be in use or protected.");
		}
		// Make an array of PPS's (for Save)
		$aList = array();
		PHPExcel_Shared_OLE_PPS::_savePpsSetPnt($aList, array($this));
		// calculate values for header
		list($iSBDcnt, $iBBcnt, $iPPScnt) = $this->_calcSize($aList); //, $rhInfo);
		// Save Header
		$this->_saveHeader($iSBDcnt, $iBBcnt, $iPPScnt);

		// Make Small Data string (write SBD)
		$this->_data = $this->_makeSmallData($aList);

		// Write BB
		$this->_saveBigData($iSBDcnt, $aList);
		// Write PPS
		$this->_savePps($aList);
		// Write Big Block Depot and BDList and Adding Header informations
		$this->_saveBbd($iSBDcnt, $iBBcnt, $iPPScnt);

		if (!is_resource($filename)) {
 			fclose($this->_FILEH_);
 		}

		return true;
	}

	/**
	* Calculate some numbers
	*
	* @access public
	* @param array $raList Reference to an array of PPS's
	* @return array The array of numbers
	*/
	public function _calcSize(&$raList)
	{
		// Calculate Basic Setting
		list($iSBDcnt, $iBBcnt, $iPPScnt) = array(0,0,0);
		$iSmallLen = 0;
		$iSBcnt = 0;
		$iCount = count($raList);
		for ($i = 0; $i < $iCount; ++$i) {
			if ($raList[$i]->Type == PHPExcel_Shared_OLE::OLE_PPS_TYPE_FILE) {
				$raList[$i]->Size = $raList[$i]->_DataLen();
				if ($raList[$i]->Size < PHPExcel_Shared_OLE::OLE_DATA_SIZE_SMALL) {
					$iSBcnt += floor($raList[$i]->Size / $this->_SMALL_BLOCK_SIZE)
								  + (($raList[$i]->Size % $this->_SMALL_BLOCK_SIZE)? 1: 0);
				} else {
					$iBBcnt += (floor($raList[$i]->Size / $this->_BIG_BLOCK_SIZE) +
						(($raList[$i]->Size % $this->_BIG_BLOCK_SIZE)? 1: 0));
				}
			}
		}
		$iSmallLen = $iSBcnt * $this->_SMALL_BLOCK_SIZE;
		$iSlCnt = floor($this->_BIG_BLOCK_SIZE / PHPExcel_Shared_OLE::OLE_LONG_INT_SIZE);
		$iSBDcnt = floor($iSBcnt / $iSlCnt) + (($iSBcnt % $iSlCnt)? 1:0);
		$iBBcnt +=  (floor($iSmallLen / $this->_BIG_BLOCK_SIZE) +
					  (( $iSmallLen % $this->_BIG_BLOCK_SIZE)? 1: 0));
		$iCnt = count($raList);
		$iBdCnt = $this->_BIG_BLOCK_SIZE / PHPExcel_Shared_OLE::OLE_PPS_SIZE;
		$iPPScnt = (floor($iCnt/$iBdCnt) + (($iCnt % $iBdCnt)? 1: 0));

		return array($iSBDcnt, $iBBcnt, $iPPScnt);
	}

	/**
	* Helper function for caculating a magic value for block sizes
	*
	* @access public
	* @param integer $i2 The argument
	* @see save()
	* @return integer
	*/
	private static function _adjust2($i2)
	{
		$iWk = log($i2)/log(2);
		return ($iWk > floor($iWk))? floor($iWk)+1:$iWk;
	}

	/**
	* Save OLE header
	*
	* @access public
	* @param integer $iSBDcnt
	* @param integer $iBBcnt
	* @param integer $iPPScnt
	*/
	public function _saveHeader($iSBDcnt, $iBBcnt, $iPPScnt)
	{
		$FILE = $this->_FILEH_;

		// Calculate Basic Setting
		$iBlCnt = $this->_BIG_BLOCK_SIZE / PHPExcel_Shared_OLE::OLE_LONG_INT_SIZE;
		$i1stBdL = ($this->_BIG_BLOCK_SIZE - 0x4C) / PHPExcel_Shared_OLE::OLE_LONG_INT_SIZE;

		$iBdExL = 0;
		$iAll = $iBBcnt + $iPPScnt + $iSBDcnt;
		$iAllW = $iAll;
		$iBdCntW = floor($iAllW / $iBlCnt) + (($iAllW % $iBlCnt)? 1: 0);
		$iBdCnt = floor(($iAll + $iBdCntW) / $iBlCnt) + ((($iAllW+$iBdCntW) % $iBlCnt)? 1: 0);

		// Calculate BD count
		if ($iBdCnt > $i1stBdL) {
			while (1) {
				++$iBdExL;
				++$iAllW;
				$iBdCntW = floor($iAllW / $iBlCnt) + (($iAllW % $iBlCnt)? 1: 0);
				$iBdCnt = floor(($iAllW + $iBdCntW) / $iBlCnt) + ((($iAllW+$iBdCntW) % $iBlCnt)? 1: 0);
				if ($iBdCnt <= ($iBdExL*$iBlCnt+ $i1stBdL)) {
					break;
				}
			}
		}

		// Save Header
		fwrite($FILE,
				"\xD0\xCF\x11\xE0\xA1\xB1\x1A\xE1"
				. "\x00\x00\x00\x00"
				. "\x00\x00\x00\x00"
				. "\x00\x00\x00\x00"
				. "\x00\x00\x00\x00"
				. pack("v", 0x3b)
				. pack("v", 0x03)
				. pack("v", -2)
				. pack("v", 9)
				. pack("v", 6)
				. pack("v", 0)
				. "\x00\x00\x00\x00"
				. "\x00\x00\x00\x00"
				. pack("V", $iBdCnt)
				. pack("V", $iBBcnt+$iSBDcnt) //ROOT START
				. pack("V", 0)
				. pack("V", 0x1000)
				. pack("V", $iSBDcnt ? 0 : -2)                  //Small Block Depot
				. pack("V", $iSBDcnt)
		  );
		// Extra BDList Start, Count
		if ($iBdCnt < $i1stBdL) {
			fwrite($FILE,
					pack("V", -2)      // Extra BDList Start
					. pack("V", 0)        // Extra BDList Count
				  );
		} else {
			fwrite($FILE, pack("V", $iAll+$iBdCnt) . pack("V", $iBdExL));
		}

		// BDList
		for ($i = 0; $i < $i1stBdL && $i < $iBdCnt; ++$i) {
			fwrite($FILE, pack("V", $iAll+$i));
		}
		if ($i < $i1stBdL) {
			$jB = $i1stBdL - $i;
			for ($j = 0; $j < $jB; ++$j) {
				fwrite($FILE, (pack("V", -1)));
			}
		}
	}

	/**
	* Saving big data (PPS's with data bigger than PHPExcel_Shared_OLE::OLE_DATA_SIZE_SMALL)
	*
	* @access public
	* @param integer $iStBlk
	* @param array &$raList Reference to array of PPS's
	*/
	public function _saveBigData($iStBlk, &$raList)
	{
		$FILE = $this->_FILEH_;

		// cycle through PPS's
		$iCount = count($raList);
		for ($i = 0; $i < $iCount; ++$i) {
			if ($raList[$i]->Type != PHPExcel_Shared_OLE::OLE_PPS_TYPE_DIR) {
				$raList[$i]->Size = $raList[$i]->_DataLen();
				if (($raList[$i]->Size >= PHPExcel_Shared_OLE::OLE_DATA_SIZE_SMALL) ||
					(($raList[$i]->Type == PHPExcel_Shared_OLE::OLE_PPS_TYPE_ROOT) && isset($raList[$i]->_data)))
				{
					// Write Data
					//if (isset($raList[$i]->_PPS_FILE)) {
					//	$iLen = 0;
					//	fseek($raList[$i]->_PPS_FILE, 0); // To The Top
					//	while($sBuff = fread($raList[$i]->_PPS_FILE, 4096)) {
					//		$iLen += strlen($sBuff);
					//		fwrite($FILE, $sBuff);
					//	}
					//} else {
						fwrite($FILE, $raList[$i]->_data);
					//}

					if ($raList[$i]->Size % $this->_BIG_BLOCK_SIZE) {
						fwrite($FILE, str_repeat("\x00", $this->_BIG_BLOCK_SIZE - ($raList[$i]->Size % $this->_BIG_BLOCK_SIZE)));
					}
					// Set For PPS
					$raList[$i]->_StartBlock = $iStBlk;
					$iStBlk +=
							(floor($raList[$i]->Size / $this->_BIG_BLOCK_SIZE) +
								(($raList[$i]->Size % $this->_BIG_BLOCK_SIZE)? 1: 0));
				}
				// Close file for each PPS, and unlink it
				//if (isset($raList[$i]->_PPS_FILE)) {
				//	fclose($raList[$i]->_PPS_FILE);
				//	$raList[$i]->_PPS_FILE = null;
				//	unlink($raList[$i]->_tmp_filename);
				//}
			}
		}
	}

	/**
	* get small data (PPS's with data smaller than PHPExcel_Shared_OLE::OLE_DATA_SIZE_SMALL)
	*
	* @access public
	* @param array &$raList Reference to array of PPS's
	*/
	public function _makeSmallData(&$raList)
	{
		$sRes = '';
		$FILE = $this->_FILEH_;
		$iSmBlk = 0;

		$iCount = count($raList);
		for ($i = 0; $i < $iCount; ++$i) {
			// Make SBD, small data string
			if ($raList[$i]->Type == PHPExcel_Shared_OLE::OLE_PPS_TYPE_FILE) {
				if ($raList[$i]->Size <= 0) {
					continue;
				}
				if ($raList[$i]->Size < PHPExcel_Shared_OLE::OLE_DATA_SIZE_SMALL) {
					$iSmbCnt = floor($raList[$i]->Size / $this->_SMALL_BLOCK_SIZE)
								  + (($raList[$i]->Size % $this->_SMALL_BLOCK_SIZE)? 1: 0);
					// Add to SBD
					$jB = $iSmbCnt - 1;
					for ($j = 0; $j < $jB; ++$j) {
						fwrite($FILE, pack("V", $j+$iSmBlk+1));
					}
					fwrite($FILE, pack("V", -2));

					//// Add to Data String(this will be written for RootEntry)
					//if ($raList[$i]->_PPS_FILE) {
					//	fseek($raList[$i]->_PPS_FILE, 0); // To The Top
					//	while ($sBuff = fread($raList[$i]->_PPS_FILE, 4096)) {
					//		$sRes .= $sBuff;
					//	}
					//} else {
						$sRes .= $raList[$i]->_data;
					//}
					if ($raList[$i]->Size % $this->_SMALL_BLOCK_SIZE) {
						$sRes .= str_repeat("\x00",$this->_SMALL_BLOCK_SIZE - ($raList[$i]->Size % $this->_SMALL_BLOCK_SIZE));
					}
					// Set for PPS
					$raList[$i]->_StartBlock = $iSmBlk;
					$iSmBlk += $iSmbCnt;
				}
			}
		}
		$iSbCnt = floor($this->_BIG_BLOCK_SIZE / PHPExcel_Shared_OLE::OLE_LONG_INT_SIZE);
		if ($iSmBlk % $iSbCnt) {
			$iB = $iSbCnt - ($iSmBlk % $iSbCnt);
			for ($i = 0; $i < $iB; ++$i) {
				fwrite($FILE, pack("V", -1));
			}
		}
		return $sRes;
	}

	/**
	* Saves all the PPS's WKs
	*
	* @access public
	* @param array $raList Reference to an array with all PPS's
	*/
	public function _savePps(&$raList)
	{
		// Save each PPS WK
		$iC = count($raList);
		for ($i = 0; $i < $iC; ++$i) {
			fwrite($this->_FILEH_, $raList[$i]->_getPpsWk());
		}
		// Adjust for Block
		$iCnt = count($raList);
		$iBCnt = $this->_BIG_BLOCK_SIZE / PHPExcel_Shared_OLE::OLE_PPS_SIZE;
		if ($iCnt % $iBCnt) {
			fwrite($this->_FILEH_, str_repeat("\x00",($iBCnt - ($iCnt % $iBCnt)) * PHPExcel_Shared_OLE::OLE_PPS_SIZE));
		}
	}

	/**
	* Saving Big Block Depot
	*
	* @access public
	* @param integer $iSbdSize
	* @param integer $iBsize
	* @param integer $iPpsCnt
	*/
	public function _saveBbd($iSbdSize, $iBsize, $iPpsCnt)
	{
		$FILE = $this->_FILEH_;
		// Calculate Basic Setting
		$iBbCnt = $this->_BIG_BLOCK_SIZE / PHPExcel_Shared_OLE::OLE_LONG_INT_SIZE;
		$i1stBdL = ($this->_BIG_BLOCK_SIZE - 0x4C) / PHPExcel_Shared_OLE::OLE_LONG_INT_SIZE;

		$iBdExL = 0;
		$iAll = $iBsize + $iPpsCnt + $iSbdSize;
		$iAllW = $iAll;
		$iBdCntW = floor($iAllW / $iBbCnt) + (($iAllW % $iBbCnt)? 1: 0);
		$iBdCnt = floor(($iAll + $iBdCntW) / $iBbCnt) + ((($iAllW+$iBdCntW) % $iBbCnt)? 1: 0);
		// Calculate BD count
		if ($iBdCnt >$i1stBdL) {
			while (1) {
				++$iBdExL;
				++$iAllW;
				$iBdCntW = floor($iAllW / $iBbCnt) + (($iAllW % $iBbCnt)? 1: 0);
				$iBdCnt = floor(($iAllW + $iBdCntW) / $iBbCnt) + ((($iAllW+$iBdCntW) % $iBbCnt)? 1: 0);
				if ($iBdCnt <= ($iBdExL*$iBbCnt+ $i1stBdL)) {
					break;
				}
			}
		}

		// Making BD
		// Set for SBD
		if ($iSbdSize > 0) {
			for ($i = 0; $i < ($iSbdSize - 1); ++$i) {
				fwrite($FILE, pack("V", $i+1));
			}
			fwrite($FILE, pack("V", -2));
		}
		// Set for B
		for ($i = 0; $i < ($iBsize - 1); ++$i) {
			fwrite($FILE, pack("V", $i+$iSbdSize+1));
		}
		fwrite($FILE, pack("V", -2));

		// Set for PPS
		for ($i = 0; $i < ($iPpsCnt - 1); ++$i) {
			fwrite($FILE, pack("V", $i+$iSbdSize+$iBsize+1));
		}
		fwrite($FILE, pack("V", -2));
		// Set for BBD itself ( 0xFFFFFFFD : BBD)
		for ($i = 0; $i < $iBdCnt; ++$i) {
			fwrite($FILE, pack("V", 0xFFFFFFFD));
		}
		// Set for ExtraBDList
		for ($i = 0; $i < $iBdExL; ++$i) {
			fwrite($FILE, pack("V", 0xFFFFFFFC));
		}
		// Adjust for Block
		if (($iAllW + $iBdCnt) % $iBbCnt) {
			$iBlock = ($iBbCnt - (($iAllW + $iBdCnt) % $iBbCnt));
			for ($i = 0; $i < $iBlock; ++$i) {
				fwrite($FILE, pack("V", -1));
			}
		}
		// Extra BDList
		if ($iBdCnt > $i1stBdL) {
			$iN=0;
			$iNb=0;
			for ($i = $i1stBdL;$i < $iBdCnt; $i++, ++$iN) {
				if ($iN >= ($iBbCnt - 1)) {
					$iN = 0;
					++$iNb;
					fwrite($FILE, pack("V", $iAll+$iBdCnt+$iNb));
				}
				fwrite($FILE, pack("V", $iBsize+$iSbdSize+$iPpsCnt+$i));
			}
			if (($iBdCnt-$i1stBdL) % ($iBbCnt-1)) {
				$iB = ($iBbCnt - 1) - (($iBdCnt - $i1stBdL) % ($iBbCnt - 1));
				for ($i = 0; $i < $iB; ++$i) {
					fwrite($FILE, pack("V", -1));
				}
			}
			fwrite($FILE, pack("V", -2));
		}
	}
}
