1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
|
<?php
/**
* Copyright (c) 2013 Robin Appelman <icewind@owncloud.com>
* This file is licensed under the Affero General Public License version 3 or
* later.
* See the COPYING-README file.
*/
namespace OC\Files\Stream;
class StaticStream {
const MODE_FILE = 0100000;
public $context;
protected static $data = array();
protected $path = '';
protected $pointer = 0;
protected $writable = false;
public function stream_close() {
}
public function stream_eof() {
return $this->pointer >= strlen(self::$data[$this->path]);
}
public function stream_flush() {
}
public static function clear() {
self::$data = array();
}
public function stream_open($path, $mode, $options, &$opened_path) {
switch ($mode[0]) {
case 'r':
if (!isset(self::$data[$path])) return false;
$this->path = $path;
$this->writable = isset($mode[1]) && $mode[1] == '+';
break;
case 'w':
self::$data[$path] = '';
$this->path = $path;
$this->writable = true;
break;
case 'a':
if (!isset(self::$data[$path])) self::$data[$path] = '';
$this->path = $path;
$this->writable = true;
$this->pointer = strlen(self::$data[$path]);
break;
case 'x':
if (isset(self::$data[$path])) return false;
$this->path = $path;
$this->writable = true;
break;
case 'c':
if (!isset(self::$data[$path])) self::$data[$path] = '';
$this->path = $path;
$this->writable = true;
break;
default:
return false;
}
$opened_path = $this->path;
return true;
}
public function stream_read($count) {
$bytes = min(strlen(self::$data[$this->path]) - $this->pointer, $count);
$data = substr(self::$data[$this->path], $this->pointer, $bytes);
$this->pointer += $bytes;
return $data;
}
public function stream_seek($offset, $whence = SEEK_SET) {
$len = strlen(self::$data[$this->path]);
switch ($whence) {
case SEEK_SET:
if ($offset <= $len) {
$this->pointer = $offset;
return true;
}
break;
case SEEK_CUR:
if ($this->pointer + $offset <= $len) {
$this->pointer += $offset;
return true;
}
break;
case SEEK_END:
if ($len + $offset <= $len) {
$this->pointer = $len + $offset;
return true;
}
break;
}
return false;
}
public function stream_stat() {
return $this->url_stat($this->path);
}
public function stream_tell() {
return $this->pointer;
}
public function stream_write($data) {
if (!$this->writable) return 0;
$size = strlen($data);
if ($this->stream_eof()) {
self::$data[$this->path] .= $data;
} else {
self::$data[$this->path] = substr_replace(
self::$data[$this->path],
$data,
$this->pointer
);
}
$this->pointer += $size;
return $size;
}
public function unlink($path) {
if (isset(self::$data[$path])) {
unset(self::$data[$path]);
}
return true;
}
public function url_stat($path) {
if (isset(self::$data[$path])) {
$size = strlen(self::$data[$path]);
$time = time();
$data = array(
'dev' => 0,
'ino' => 0,
'mode' => self::MODE_FILE | 0777,
'nlink' => 1,
'uid' => 0,
'gid' => 0,
'rdev' => '',
'size' => $size,
'atime' => $time,
'mtime' => $time,
'ctime' => $time,
'blksize' => -1,
'blocks' => -1,
);
return array_values($data) + $data;
}
return false;
}
}
|
