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
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
|
<?php
class IOFilter extends FILTER implements STREAMObjectInterface {
var $sink;
var $sink_open;
var $outlet;
var $outlet_open;
var $copymode;
var $resource_close;
var $extra_data = "";
var $block_mode;
function __construct(&$info = NULL, STREAMWriterInterface $output = NULL, $sink = NULL, $outlet = 0, $flags = 0) {
parent::__construct($info, $output);
$this->extra_data = false;
$this->CreateFilter($sink, $outlet);
if ($flags&STREAM::GIFT) $this->resource_close = true;
else $this->resource_close = false;
}
/*
outlet:
- NULL : create standard
- resourse : create standard and initialize
- WriterI : use writer interface
- #number : dublicate sink
- false : no outlet
*/
function CreateFilter($sink = NULL, $outlet = 0) {
unset($this->sink);
unset($this->outlet);
if (is_resource($sink)) {
$this->sink = new IO($sink, is_int($outlet));
$this->sink_open = true;
} elseif ($sink instanceof STREAMWriterInterface) {
$this->sink = $sink;
$this->sink_open = false;
} elseif ($sink) {
throw new ADEIException(translate("Unsupported sink is supplied for the FILTER"));
} else {
$this->sink = new IO($NULL=NULL, is_int($outlet));
$this->sink_open = true;
}
if ($outlet === false) {
$this->outlet = false;
$this->outlet_open = false;
$this->filewriter = true;
$this->copymode = false;
} elseif (is_int($outlet)) {
$this->outlet = $this->sink;
$this->outlet_open = false;
$this->filewriter = false;
$this->copymode = true;
} elseif (is_resource($args[0])) {
$this->outlet = new IO($outlet, true);
$this->outlet_open = true;
$this->filewriter = false;
$this->copymode = false;
} elseif ($outlet instanceof STREAMWriterInterface) {
$this->outlet = $outlet;
$this->outlet_open = false;
$this->filewriter = false;
$this->copymode = false;
} elseif ($outlet) {
throw new ADEIException(translate("Unsupported outlet is supplied for the FILTER"));
} else {
$this->outlet = new IO($NULL=NULL, true);
$this->outlet_open = true;
$this->filewriter = false;
$this->copymode = false;
}
}
function OpenPipes(&$pipes) {
if ($this->sink_open) {
$this->sink->Open($pipes[0], $flags);
}
if ($this->outlet_open) {
$this->outlet->Open($pipes[1], $flags);
}
}
function ClosePipes(STREAMWriterInterface $h = NULL) {
if ($this->output) $h = $this->output;
// if outlet is copy of sink, we have outlet_open false
if ($this->sink_open) {
$this->sink->Close();
}
if ($this->outlet_open) {
return $this->outlet->Close($h);
}
}
function Open(&$args = NULL, &$pipes = NULL, $flags = 0) {
parent::Open($args);
if ($pipes) {
$this->OpenPipes($pipes, $flags);
$this->block_mode = false;
} else $this->block_mode = true;
}
function BlockStart(&$args = NULL, &$pipes = NULL, $flags = 0) {
if ($this->block_mode) {
if ($pipes)
$this->OpenPipes($pipes, $flags);
else
throw new ADEIException(translate("The actual pipes are not supplied IOFilter"));
}
}
function BlockEnd(STREAMWriterInterface $h = NULL) {
if ($this->block_mode) {
return $this->ClosePipes($h);
}
}
function Close(STREAMWriterInterface $h = NULL) {
if (!$this->block_mode) {
$res = $this->ClosePipes($h);
if ($res) return $res . parent::Close($h);
}
return parent::Close($h);
}
function WriteData(&$data, $flags = 0) {
$this->sink->Write($data);
}
function ReadData($limit = 0, $flags = 0) {
if ($this->outlet) {
if ($this->output)
return new ADEIException(translate("The filter have STREAMWriter configured in. Therethore read requests are not permited"));
if ($this->extra_data) {
$res = $this->extra_data . $this->outlet->ReadData($limit, $flags);
$this->extra_data = false;
return $res;
}
return $this->outlet->ReadData($limit, $flags);
} else
throw new ADEIException(translate("The filter outlet is not configured"));
}
function StreamData(STREAMWriterInterface $h = NULL, $flags = 0) {
if ($this->outlet) {
if ($this->output) $h = $this->output;
else if (!$h) throw new ADEIException(translate("The data routing is failed (there is no output specified for FILTER)"));
if ($this->extra_data) {
$h->WriteData($this->extra_data);
$this->extra_data = false;
}
$this->outlet->StreamData($h, $flags);
} else
throw new ADEIException(translate("The filter outlet is not configured"));
}
function EOS() {
if ($this->outlet) {
if ($this->extra_data) return false;
return $this->outlet->EOS();
} else
throw new ADEIException(translate("The filter outlet is not configured"));
}
}
?>
|