root.php

完美的在线教育系统

                  . pack("V", 0x1000)
                  . pack("V", 0)                  //Small Block Depot
                  . pack("V", 1)
          );
        // 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 < $i1stBdL) {
            for ($j = 0; $j < ($i1stBdL-$i); $j++) {
                fwrite($FILE, (pack("V", -1)));
            }
        }
    }

    /**
    * Saving big data (PPS's with data bigger than OLE_DATA_SIZE_SMALL)
    *
    * @access private
    * @param integer $iStBlk
    * @param array &$raList Reference to array of PPS's
    */
    function _saveBigData($iStBlk, &$raList)
    {
        $FILE = $this->_FILEH_;
   
        // cycle through PPS's
        for ($i = 0; $i < count($raList); $i++) {
            if ($raList[$i]->Type != OLE_PPS_TYPE_DIR) {
                $raList[$i]->Size = $raList[$i]->_DataLen();
                if (($raList[$i]->Size >= OLE_DATA_SIZE_SMALL) ||
                    (($raList[$i]->Type == 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 % $this->_BIG_BLOCK_SIZE) {
                        for ($j = 0; $j < ($this->_BIG_BLOCK_SIZE - ($raList[$i]->Size % $this->_BIG_BLOCK_SIZE)); $j++) {
                            fwrite($FILE, "\x00");
                        }
                    }
                    // 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 OLE_DATA_SIZE_SMALL)
    *
    * @access private
    * @param array &$raList Reference to array of PPS's
    */
    function _makeSmallData(&$raList)
    {
        $sRes = '';
        $FILE = $this->_FILEH_;
        $iSmBlk = 0;
   
        for ($i = 0; $i < count($raList); $i++) {
            // Make SBD, small data string
            if ($raList[$i]->Type == OLE_PPS_TYPE_FILE) {
                if ($raList[$i]->Size <= 0) {
                    continue;
                }
                if ($raList[$i]->Size < OLE_DATA_SIZE_SMALL) {
                    $iSmbCnt = floor($raList[$i]->Size / $this->_SMALL_BLOCK_SIZE)
                                  + (($raList[$i]->Size % $this->_SMALL_BLOCK_SIZE)? 1: 0);
                    // Add to SBD
                    for ($j = 0; $j < ($iSmbCnt-1); $j++) {
                        fwrite($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 % $this->_SMALL_BLOCK_SIZE) {
                        for ($j = 0; $j < ($this->_SMALL_BLOCK_SIZE - ($raList[$i]->Size % $this->_SMALL_BLOCK_SIZE)); $j++) {
                            $sRes .= "\x00";
                        }
                    }
                    // Set for PPS
                    $raList[$i]->_StartBlock = $iSmBlk;
                    $iSmBlk += $iSmbCnt;
                }
            }
        }
        $iSbCnt = floor($this->_BIG_BLOCK_SIZE / OLE_LONG_INT_SIZE);
        if ($iSmBlk % $iSbCnt) {
            for ($i = 0; $i < ($iSbCnt - ($iSmBlk % $iSbCnt)); $i++) {
                fwrite($FILE, pack("V", -1));
            }
        }
        return $sRes;
    }

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

    /**
    * Saving Big Block Depot
    *
    * @access private
    * @param integer $iSbdSize
    * @param integer $iBsize
    * @param integer $iPpsCnt
    */
    function _saveBbd($iSbdSize, $iBsize, $iPpsCnt) 
    {
        $FILE = $this->_FILEH_;
        // Calculate Basic Setting
        $iBbCnt = $this->_BIG_BLOCK_SIZE / OLE_LONG_INT_SIZE;
        $i1stBdL = ($this->_BIG_BLOCK_SIZE - 0x4C) / 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) % $iBbCnt) {
            for ($i = 0; $i < ($iBbCnt - (($iAllW + $iBdCnt) % $iBbCnt)); $i++) {
                fwrite($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) % ($iBbCnt-1)) {
                for ($i = 0; $i < (($iBbCnt - 1) - (($iBdCnt - $i1stBdL) % ($iBbCnt - 1))); $i++) {
                    fwrite($FILE, pack("V", -1)); 
                }
            }
            fwrite($FILE, pack("V", -2));
        }
    }
}
?>