Subversion-Projekte lars-tiefland.php_share

<?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: PPS.php,v 1.5 2003/12/14 18:12:28 xnoguer Exp $

require_once('PEAR.php');

require_once('OLE.php');

/**

* Class for creating PPS's for OLE containers

*

* @author   Xavier Noguer <xnoguer@php.net>

* @category Structures

* @package  OLE

*/

class OLE_PPS extends PEAR

{

    /**

    * The PPS index

    * @var integer

    */

    var $No;

    /**

    * The PPS name (in Unicode)

    * @var string

    */

    var $Name;

    /**

    * The PPS type. Dir, Root or File

    * @var integer

    */

    var $Type;

    /**

    * The index of the previous PPS

    * @var integer

    */

    var $PrevPps;

    /**

    * The index of the next PPS

    * @var integer

    */

    var $NextPps;

    /**

    * The index of it's first child if this is a Dir or Root PPS

    * @var integer

    */

    var $DirPps;

    /**

    * A timestamp

    * @var integer

    */

    var $Time1st;

    /**

    * A timestamp

    * @var integer

    */

    var $Time2nd;

    /**

    * Starting block (small or big) for this PPS's data  inside the container

    * @var integer

    */

    var $_StartBlock;

    /**

    * The size of the PPS's data (in bytes)

    * @var integer

    */

    var $Size;

    /**

    * The PPS's data (only used if it's not using a temporary file)

    * @var string

    */

    var $_data;

    /**

    * Array of child PPS's (only used by Root and Dir PPS's)

    * @var array

    */

    var $children = array();

    /**

    * The constructor

    *

    * @access public

    * @param integer $No   The PPS index

    * @param string $name  The PPS name (in Unicode)

    * @param integer $type The PPS type. Dir, Root or File

    * @param integer $prev The index of the previous PPS

    * @param integer $next The index of the next PPS

    * @param integer $dir  The index of it's first child if this is a Dir or Root PPS

    * @param integer $time_1st A timestamp

    * @param integer $time_2nd A timestamp

    * @param array   $children Array containing children PPS for this PPS

    */

    function OLE_PPS($No, $name, $type, $prev, $next, $dir, $time_1st, $time_2nd, $data, $children)

    {

        $this->No      = $No;

        $this->Name    = $name;

        $this->Type    = $type;

        $this->PrevPps = $prev;

        $this->NextPps = $next;

        $this->DirPps  = $dir;

        $this->Time1st = $time_1st;

        $this->Time2nd = $time_2nd;

        $this->_data      = $data;

        $this->children   = $children;

        if ($data != '') {

            $this->Size = strlen($data);

        }

        else {

            $this->Size = 0;

        }

    }

    /**

    * Returns the amount of data saved for this PPS

    *

    * @access private

    * @return integer The amount of data (in bytes)

    */

    function _DataLen()

    {

        if (!isset($this->_data)) {

            return 0;

        }

        if (isset($this->_PPS_FILE))

        {

            fseek($this->_PPS_FILE, 0);

            $stats = fstat($this->_PPS_FILE);

            return $stats[7];

        }

        else {

            return strlen($this->_data);

        }

    }

    /**

    * Returns a string with the PPS's WK (What is a WK?)

    *

    * @access private

    * @return string The binary string

    */

    function _getPpsWk()

    {

        $ret = $this->Name;

        for ($i = 0; $i < (64 - strlen($this->Name)); $i++) {

            $ret .= "\x00";

        }

        $ret .= pack("v", strlen($this->Name) + 2)  // 66

              . pack("c", $this->Type)              // 67

              . pack("c", 0x00) //UK                // 68

              . pack("V", $this->PrevPps) //Prev    // 72

              . pack("V", $this->NextPps) //Next    // 76

              . pack("V", $this->DirPps)  //Dir     // 80

              . "\x00\x09\x02\x00"                  // 84

              . "\x00\x00\x00\x00"                  // 88

              . "\xc0\x00\x00\x00"                  // 92

              . "\x00\x00\x00\x46"                  // 96 // Seems to be ok only for Root

              . "\x00\x00\x00\x00"                  // 100

              . OLE::LocalDate2OLE($this->Time1st)       // 108

              . OLE::LocalDate2OLE($this->Time2nd)       // 116

              . pack("V", isset($this->_StartBlock)?

                        $this->_StartBlock:0)        // 120

              . pack("V", $this->Size)               // 124

              . pack("V", 0);                        // 128

        return $ret;

    }

    /**

    * Updates index and pointers to previous, next and children PPS's for this

    * PPS. I don't think it'll work with Dir PPS's.

    *

    * @access private

    * @param array &$pps_array Reference to the array of PPS's for the whole OLE

    *                          container

    * @return integer          The index for this PPS

    */

    function _savePpsSetPnt(&$pps_array)

    {

        $pps_array[count($pps_array)] = &$this;

        $this->No = count($pps_array) - 1;

        $this->PrevPps = 0xFFFFFFFF;

        $this->NextPps = 0xFFFFFFFF;

        if (count($this->children) > 0) {

            $this->DirPps = $this->children[0]->_savePpsSetPnt($pps_array);

        }

        else {

            $this->DirPps = 0xFFFFFFFF;

        }

        return $this->No;

    }

}

?>