scratch – Blame information for rev 115

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115 office 1 <?php
2  
3 /*
4 * This file is part of the Symfony package.
5 *
6 * (c) Fabien Potencier <fabien@symfony.com>
7 *
8 * For the full copyright and license information, please view the LICENSE
9 * file that was distributed with this source code.
10 */
11  
12 namespace Symfony\Component\Process\Pipes;
13  
14 use Symfony\Component\Process\Process;
15  
16 /**
17 * UnixPipes implementation uses unix pipes as handles.
18 *
19 * @author Romain Neutron <imprec@gmail.com>
20 *
21 * @internal
22 */
23 class UnixPipes extends AbstractPipes
24 {
25 /** @var bool */
26 private $ttyMode;
27 /** @var bool */
28 private $ptyMode;
29 /** @var bool */
30 private $haveReadSupport;
31  
32 public function __construct($ttyMode, $ptyMode, $input, $haveReadSupport)
33 {
34 $this->ttyMode = (bool) $ttyMode;
35 $this->ptyMode = (bool) $ptyMode;
36 $this->haveReadSupport = (bool) $haveReadSupport;
37  
38 parent::__construct($input);
39 }
40  
41 public function __destruct()
42 {
43 $this->close();
44 }
45  
46 /**
47 * {@inheritdoc}
48 */
49 public function getDescriptors()
50 {
51 if (!$this->haveReadSupport) {
52 $nullstream = fopen('/dev/null', 'c');
53  
54 return array(
55 array('pipe', 'r'),
56 $nullstream,
57 $nullstream,
58 );
59 }
60  
61 if ($this->ttyMode) {
62 return array(
63 array('file', '/dev/tty', 'r'),
64 array('file', '/dev/tty', 'w'),
65 array('file', '/dev/tty', 'w'),
66 );
67 }
68  
69 if ($this->ptyMode && Process::isPtySupported()) {
70 return array(
71 array('pty'),
72 array('pty'),
73 array('pty'),
74 );
75 }
76  
77 return array(
78 array('pipe', 'r'),
79 array('pipe', 'w'), // stdout
80 array('pipe', 'w'), // stderr
81 );
82 }
83  
84 /**
85 * {@inheritdoc}
86 */
87 public function getFiles()
88 {
89 return array();
90 }
91  
92 /**
93 * {@inheritdoc}
94 */
95 public function readAndWrite($blocking, $close = false)
96 {
97 $this->unblock();
98 $w = $this->write();
99  
100 $read = $e = array();
101 $r = $this->pipes;
102 unset($r[0]);
103  
104 // let's have a look if something changed in streams
105 if (($r || $w) && false === $n = @stream_select($r, $w, $e, 0, $blocking ? Process::TIMEOUT_PRECISION * 1E6 : 0)) {
106 // if a system call has been interrupted, forget about it, let's try again
107 // otherwise, an error occurred, let's reset pipes
108 if (!$this->hasSystemCallBeenInterrupted()) {
109 $this->pipes = array();
110 }
111  
112 return $read;
113 }
114  
115 foreach ($r as $pipe) {
116 // prior PHP 5.4 the array passed to stream_select is modified and
117 // lose key association, we have to find back the key
118 $read[$type = array_search($pipe, $this->pipes, true)] = '';
119  
120 do {
121 $data = fread($pipe, self::CHUNK_SIZE);
122 $read[$type] .= $data;
123 } while (isset($data[0]) && ($close || isset($data[self::CHUNK_SIZE - 1])));
124  
125 if (!isset($read[$type][0])) {
126 unset($read[$type]);
127 }
128  
129 if ($close && feof($pipe)) {
130 fclose($pipe);
131 unset($this->pipes[$type]);
132 }
133 }
134  
135 return $read;
136 }
137  
138 /**
139 * {@inheritdoc}
140 */
141 public function haveReadSupport()
142 {
143 return $this->haveReadSupport;
144 }
145  
146 /**
147 * {@inheritdoc}
148 */
149 public function areOpen()
150 {
151 return (bool) $this->pipes;
152 }
153 }