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File: includes/getid3/module.archive.szip.php

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  Classes of Karl Holz  >  WaldScan  >  includes/getid3/module.archive.szip.php  >  Download  
File: includes/getid3/module.archive.szip.php
Role: Auxiliary script
Content type: text/plain
Description: getID3 dependency
Class: WaldScan
Scan directories for files with certain extensions
Author: By
Last change:
Date: 2 years ago
Size: 3,877 bytes
 

Contents

Class file image Download
<?php
/////////////////////////////////////////////////////////////////
/// getID3() by James Heinrich <info@getid3.org> //
// available at http://getid3.sourceforge.net //
// or http://www.getid3.org //
/////////////////////////////////////////////////////////////////
// See readme.txt for more details //
/////////////////////////////////////////////////////////////////
// //
// module.archive.szip.php //
// module for analyzing SZIP compressed files //
// dependencies: NONE //
// ///
/////////////////////////////////////////////////////////////////


class getid3_szip extends getid3_handler
{

    function
Analyze() {
       
$info = &$this->getid3->info;

       
fseek($this->getid3->fp, $info['avdataoffset'], SEEK_SET);
       
$SZIPHeader = fread($this->getid3->fp, 6);
        if (
substr($SZIPHeader, 0, 4) != "SZ\x0A\x04") {
           
$info['error'][] = 'Expecting "53 5A 0A 04" at offset '.$info['avdataoffset'].', found "'.getid3_lib::PrintHexBytes(substr($SZIPHeader, 0, 4)).'"';
            return
false;
        }
       
$info['fileformat'] = 'szip';
       
$info['szip']['major_version'] = getid3_lib::BigEndian2Int(substr($SZIPHeader, 4, 1));
       
$info['szip']['minor_version'] = getid3_lib::BigEndian2Int(substr($SZIPHeader, 5, 1));

        while (!
feof($this->getid3->fp)) {
           
$NextBlockID = fread($this->getid3->fp, 2);
            switch (
$NextBlockID) {
                case
'SZ':
                   
// Note that szip files can be concatenated, this has the same effect as
                    // concatenating the files. this also means that global header blocks
                    // might be present between directory/data blocks.
                   
fseek($this->getid3->fp, 4, SEEK_CUR);
                    break;

                case
'BH':
                   
$BHheaderbytes = getid3_lib::BigEndian2Int(fread($this->getid3->fp, 3));
                   
$BHheaderdata = fread($this->getid3->fp, $BHheaderbytes);
                   
$BHheaderoffset = 0;
                    while (
strpos($BHheaderdata, "\x00", $BHheaderoffset) > 0) {
                       
//filename as \0 terminated string (empty string indicates end)
                        //owner as \0 terminated string (empty is same as last file)
                        //group as \0 terminated string (empty is same as last file)
                        //3 byte filelength in this block
                        //2 byte access flags
                        //4 byte creation time (like in unix)
                        //4 byte modification time (like in unix)
                        //4 byte access time (like in unix)

                       
$BHdataArray['filename'] = substr($BHheaderdata, $BHheaderoffset, strcspn($BHheaderdata, "\x00"));
                       
$BHheaderoffset += (strlen($BHdataArray['filename']) + 1);

                       
$BHdataArray['owner'] = substr($BHheaderdata, $BHheaderoffset, strcspn($BHheaderdata, "\x00"));
                       
$BHheaderoffset += (strlen($BHdataArray['owner']) + 1);

                       
$BHdataArray['group'] = substr($BHheaderdata, $BHheaderoffset, strcspn($BHheaderdata, "\x00"));
                       
$BHheaderoffset += (strlen($BHdataArray['group']) + 1);

                       
$BHdataArray['filelength'] = getid3_lib::BigEndian2Int(substr($BHheaderdata, $BHheaderoffset, 3));
                       
$BHheaderoffset += 3;

                       
$BHdataArray['access_flags'] = getid3_lib::BigEndian2Int(substr($BHheaderdata, $BHheaderoffset, 2));
                       
$BHheaderoffset += 2;

                       
$BHdataArray['creation_time'] = getid3_lib::BigEndian2Int(substr($BHheaderdata, $BHheaderoffset, 4));
                       
$BHheaderoffset += 4;

                       
$BHdataArray['modification_time'] = getid3_lib::BigEndian2Int(substr($BHheaderdata, $BHheaderoffset, 4));
                       
$BHheaderoffset += 4;

                       
$BHdataArray['access_time'] = getid3_lib::BigEndian2Int(substr($BHheaderdata, $BHheaderoffset, 4));
                       
$BHheaderoffset += 4;

                       
$info['szip']['BH'][] = $BHdataArray;
                    }
                    break;

                default:
                    break
2;
            }
        }

        return
true;

    }

}

?>