Verzeichnisstruktur phpBB-3.3.15
- Veröffentlicht
- 28.08.2024
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InputStream.php
01 <?php
02
03 /*
04 * This file is part of the Symfony package.
05 *
06 * (c) Fabien Potencier <fabien@symfony.com>
07 *
08 * For the full copyright and license information, please view the LICENSE
09 * file that was distributed with this source code.
10 */
11
12 namespace Symfony\Component\Process;
13
14 use Symfony\Component\Process\Exception\RuntimeException;
15
16 /**
17 * Provides a way to continuously write to the input of a Process until the InputStream is closed.
18 *
19 * @author Nicolas Grekas <p@tchwork.com>
20 */
21 class InputStream implements \IteratorAggregate
22 {
23 /** @var callable|null */
24 private $onEmpty = null;
25 private $input = [];
26 private $open = true;
27
28 /**
29 * Sets a callback that is called when the write buffer becomes empty.
30 */
31 public function onEmpty(callable $onEmpty = null)
32 {
33 $this->onEmpty = $onEmpty;
34 }
35
36 /**
37 * Appends an input to the write buffer.
38 *
39 * @param resource|string|int|float|bool|\Traversable|null $input The input to append as scalar,
40 * stream resource or \Traversable
41 */
42 public function write($input)
43 {
44 if (null === $input) {
45 return;
46 }
47 if ($this->isClosed()) {
48 throw new RuntimeException(sprintf('"%s" is closed.', static::class));
49 }
50 $this->input[] = ProcessUtils::validateInput(__METHOD__, $input);
51 }
52
53 /**
54 * Closes the write buffer.
55 */
56 public function close()
57 {
58 $this->open = false;
59 }
60
61 /**
62 * Tells whether the write buffer is closed or not.
63 */
64 public function isClosed()
65 {
66 return !$this->open;
67 }
68
69 public function getIterator()
70 {
71 $this->open = true;
72
73 while ($this->open || $this->input) {
74 if (!$this->input) {
75 yield '';
76 continue;
77 }
78 $current = array_shift($this->input);
79
80 if ($current instanceof \Iterator) {
81 foreach ($current as $cur) {
82 yield $cur;
83 }
84 } else {
85 yield $current;
86 }
87 if (!$this->input && $this->open && null !== $onEmpty = $this->onEmpty) {
88 $this->write($onEmpty($this));
89 }
90 }
91 }
92 }
93