GetId3\Module\Archive\Szip Class Reference
GetId3() by James Heinrich info@.nosp@m.geti.nosp@m.d3.or.nosp@m.g //. More...
Inheritance diagram for GetId3\Module\Archive\Szip:
Collaboration diagram for GetId3\Module\Archive\Szip:
Public Member Functions | |
| analyze () | |
| Public Member Functions inherited from GetId3\Handler\BaseHandler | |
| __construct (GetId3Core $getid3, $call_module=null) | |
| analyze () | |
| Analyze from file pointer. More... | |
| AnalyzeString (&$string) | |
| Analyze from string instead. More... | |
| saveAttachment (&$ThisFileInfoIndex, $filename, $offset, $length) | |
Additional Inherited Members | |
| Protected Member Functions inherited from GetId3\Handler\BaseHandler | |
| ftell () | |
| fread ($bytes) | |
| fseek ($bytes, $whence=SEEK_SET) | |
| feof () | |
| isDependencyFor ($module) | |
| error ($text) | |
| warning ($text) | |
| Protected Attributes inherited from GetId3\Handler\BaseHandler | |
| $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 //.
module for analyzing SZIP compressed files
Member Function Documentation
◆ analyze()
| GetId3\Module\Archive\Szip::analyze | ( | ) |
- Returns
- boolean
Reimplemented from GetId3\Handler\BaseHandler.
Definition at line 35 of file Szip.php.
36 {
37 $info = &$this->getid3->info;
38
40 $SZIPHeader = fread($this->getid3->fp, 6);
41 if (substr($SZIPHeader, 0, 4) != "SZ\x0A\x04") {
42 $info['error'][] = 'Expecting "53 5A 0A 04" at offset ' . $info['avdataoffset'] . ', found "' . Helper::PrintHexBytes(substr($SZIPHeader,
43 0,
44 4)) . '"';
45
46 return false;
47 }
50 4,
51 1));
53 5,
54 1));
55
57 $NextBlockID = fread($this->getid3->fp, 2);
58 switch ($NextBlockID) {
59 case 'SZ':
60 // Note that szip files can be concatenated, this has the same effect as
61 // concatenating the files. this also means that global header blocks
62 // might be present between directory/data blocks.
63 fseek($this->getid3->fp, 4, SEEK_CUR);
64 break;
65
66 case 'BH':
68 3));
69 $BHheaderdata = fread($this->getid3->fp, $BHheaderbytes);
70 $BHheaderoffset = 0;
71 while (strpos($BHheaderdata, "\x00", $BHheaderoffset) > 0) {
72 //filename as \0 terminated string (empty string indicates end)
73 //owner as \0 terminated string (empty is same as last file)
74 //group as \0 terminated string (empty is same as last file)
75 //3 byte filelength in this block
76 //2 byte access flags
77 //4 byte creation time (like in unix)
78 //4 byte modification time (like in unix)
79 //4 byte access time (like in unix)
80
81 $BHdataArray['filename'] = substr($BHheaderdata,
82 $BHheaderoffset,
83 strcspn($BHheaderdata,
84 "\x00"));
85 $BHheaderoffset += (strlen($BHdataArray['filename']) + 1);
86
87 $BHdataArray['owner'] = substr($BHheaderdata,
88 $BHheaderoffset,
89 strcspn($BHheaderdata,
90 "\x00"));
91 $BHheaderoffset += (strlen($BHdataArray['owner']) + 1);
92
93 $BHdataArray['group'] = substr($BHheaderdata,
94 $BHheaderoffset,
95 strcspn($BHheaderdata,
96 "\x00"));
97 $BHheaderoffset += (strlen($BHdataArray['group']) + 1);
98
100 $BHheaderoffset,
101 3));
102 $BHheaderoffset += 3;
103
105 $BHheaderoffset,
106 2));
107 $BHheaderoffset += 2;
108
110 $BHheaderoffset,
111 4));
112 $BHheaderoffset += 4;
113
115 $BHheaderoffset,
116 4));
117 $BHheaderoffset += 4;
118
120 $BHheaderoffset,
121 4));
122 $BHheaderoffset += 4;
123
125 }
126 break;
127
128 default:
129 break 2;
130 }
131 }
132
133 return true;
134 }
static BigEndian2Int($byteword, $synchsafe=false, $signed=false)
Definition: Helper.php:374
static PrintHexBytes($string, $hex=true, $spaces=true, $htmlencoding='UTF-8')
Definition: Helper.php:36
References $info, GetId3\Lib\Helper\BigEndian2Int(), GetId3\Handler\BaseHandler\feof(), GetId3\Handler\BaseHandler\fread(), GetId3\Handler\BaseHandler\fseek(), and GetId3\Lib\Helper\PrintHexBytes().
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The documentation for this class was generated from the following file:
- libs/composer/vendor/phansys/getid3/GetId3/Module/Archive/Szip.php
