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
|
<?php
/**
* Copyright (c) 2014 Robin Appelman <icewind@owncloud.com>
* This file is licensed under the Licensed under the MIT license:
* http://opensource.org/licenses/MIT
*/
namespace Icewind\Streams;
/**
* Base class for stream wrappers, wraps an existing stream
*
* This wrapper itself doesn't implement any functionality but is just a base class for other wrappers to extend
*/
abstract class Wrapper extends WrapperHandler implements File, Directory {
/**
* @var resource
*/
public $context;
/**
* The wrapped stream
*
* @var resource
*/
protected $source;
/**
* @param resource $source
*/
protected function setSourceStream($source) {
$this->source = $source;
}
protected function loadContext($name = null) {
$context = parent::loadContext($name);
if (isset($context['source']) and is_resource($context['source'])) {
$this->setSourceStream($context['source']);
} else {
throw new \BadMethodCallException('Invalid context, source not set');
}
return $context;
}
public function stream_seek($offset, $whence = SEEK_SET) {
$result = fseek($this->source, $offset, $whence);
return $result == 0 ? true : false;
}
public function stream_tell() {
return ftell($this->source);
}
public function stream_read($count) {
return fread($this->source, $count);
}
public function stream_write($data) {
return fwrite($this->source, $data);
}
public function stream_set_option($option, $arg1, $arg2) {
switch ($option) {
case STREAM_OPTION_BLOCKING:
return stream_set_blocking($this->source, (bool)$arg1);
case STREAM_OPTION_READ_TIMEOUT:
return stream_set_timeout($this->source, $arg1, $arg2);
case STREAM_OPTION_WRITE_BUFFER:
return stream_set_write_buffer($this->source, $arg1) === 0;
}
return false;
}
public function stream_truncate($size) {
return ftruncate($this->source, $size);
}
public function stream_stat() {
return fstat($this->source);
}
public function stream_lock($mode) {
return flock($this->source, $mode);
}
public function stream_flush() {
return fflush($this->source);
}
public function stream_eof() {
return feof($this->source);
}
public function stream_close() {
return fclose($this->source);
}
public function dir_readdir() {
return readdir($this->source);
}
public function dir_closedir() {
closedir($this->source);
return true;
}
public function dir_rewinddir() {
return rewind($this->source);
}
}
|