getid3_szip Class Reference

getID3() by James Heinrich info@.nosp@m.geti.nosp@m.d3.or.nosp@m.g // More...

Inheritance diagram for getid3_szip:

Collaboration diagram for getid3_szip:

Public Member Functions
	Analyze ()
Public Member Functions inherited from getid3_handler
	__construct (getID3 $getid3, $call_module=null)
	Analyze ()
	AnalyzeString ($string)
	setStringMode ($string)
	saveAttachment ($name, $offset, $length, $image_mime=null)

Additional Inherited Members
Protected Member Functions inherited from getid3_handler
	ftell ()
	fread ($bytes)
	fseek ($bytes, $whence=SEEK_SET)
	feof ()
	isDependencyFor ($module)
	error ($text)
	warning ($text)
	notice ($text)
Protected Attributes inherited from getid3_handler
	$getid3
	$data_string_flag = false
	$data_string = ''
	$data_string_position = 0
	$data_string_length = 0

Detailed Description

getID3() by James Heinrich info@.nosp@m.geti.nosp@m.d3.or.nosp@m.g //

Definition at line 18 of file module.archive.szip.php.

Member Function Documentation

Analyze()

getid3_szip::Analyze

(

)

Definition at line 21 of file module.archive.szip.php.

References $info, getid3_lib\BigEndian2Int(), getid3_handler\error(), getid3_handler\feof(), getid3_handler\fread(), getid3_handler\fseek(), and getid3_lib\PrintHexBytes().

                                  {
                $info = &$this->getid3->info;

                $this->fseek($info['avdataoffset']);
                $SZIPHeader = $this->fread(6);
                if (substr($SZIPHeader, 0, 4) != "SZ\x0A\x04") {
                        $this->error('Expecting "53 5A 0A 04" at offset '.$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));
$this->error('SZIP parsing not enabled in this version of getID3() ['.$this->getid3->version().']');
return false;

                while (!$this->feof()) {
                        $NextBlockID = $this->fread(2);
                        switch ($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.
                                        $this->fseek(4, SEEK_CUR);
                                        break;

                                case 'BH':
                                        $BHheaderbytes  = getid3_lib::BigEndian2Int($this->fread(3));
                                        $BHheaderdata   = $this->fread($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;

        }

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The documentation for this class was generated from the following file:

• libs/composer/vendor/james-heinrich/getid3/getid3/module.archive.szip.php