stream/Stream.php at v0.2.1 · reactphp/stream · GitHub

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
<?php

namespace React\Stream;

use Evenement\EventEmitter;
use React\EventLoop\LoopInterface;

class Stream extends EventEmitter implements ReadableStreamInterface, WritableStreamInterface
{
    public $bufferSize = 4096;
    public $stream;
    protected $readable = true;
    protected $writable = true;
    protected $closing = false;
    protected $loop;
    protected $buffer;

    public function __construct($stream, LoopInterface $loop)
    {
        $this->stream = $stream;
        $this->loop = $loop;
        $this->buffer = new Buffer($this->stream, $this->loop);

        $that = $this;

        $this->buffer->on('error', function ($error) use ($that) {
            $that->emit('error', array($error, $that));
            $that->close();
        });

        $this->buffer->on('drain', function () use ($that) {
            $that->emit('drain');
        });

        $this->resume();
    }

    public function isReadable()
    {
        return $this->readable;
    }

    public function isWritable()
    {
        return $this->writable;
    }

    public function pause()
    {
        $this->loop->removeReadStream($this->stream);
    }

    public function resume()
    {
        $this->loop->addReadStream($this->stream, array($this, 'handleData'));
    }

    public function write($data)
    {
        if (!$this->writable) {
            return;
        }

        return $this->buffer->write($data);
    }

    public function close()
    {
        if (!$this->writable && !$this->closing) {
            return;
        }

        $this->closing = false;

        $this->readable = false;
        $this->writable = false;

        $this->emit('end', array($this));
        $this->emit('close', array($this));
        $this->loop->removeStream($this->stream);
        $this->buffer->removeAllListeners();
        $this->removeAllListeners();

        $this->handleClose();
    }

    public function end($data = null)
    {
        if (!$this->writable) {
            return;
        }

        $this->closing = true;

        $this->readable = false;
        $this->writable = false;

        $that = $this;

        $this->buffer->on('close', function () use ($that) {
            $that->close();
        });

        $this->buffer->end($data);
    }

    public function pipe(WritableStreamInterface $dest, array $options = array())
    {
        Util::pipe($this, $dest, $options);

        return $dest;
    }

    public function handleData($stream)
    {
        $data = fread($stream, $this->bufferSize);

        $this->emit('data', array($data, $this));

        if (feof($stream)) {
            $this->end();
        }
    }

    public function handleClose()
    {
        if (is_resource($this->stream)) {
            fclose($this->stream);
        }
    }

    public function getBuffer()
    {
        return $this->buffer;
    }
}