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Edit File : InputStream.php \| Size : 2.25 KB
<?php /* * This file is part of the Symfony package. * * (c) Fabien Potencier <fabien@symfony.com> * * For the full copyright and license information, please view the LICENSE * file that was distributed with this source code. / namespace Symfony\Component\Process; use Symfony\Component\Process\Exception\RuntimeException; /* * Provides a way to continuously write to the input of a Process until the InputStream is closed. * * @author Nicolas Grekas <p@tchwork.com> / class InputStream implements \IteratorAggregate { /* @var callable\|null / private $onEmpty = null; private $input = []; private $open = true; /* * Sets a callback that is called when the write buffer becomes empty. / public function onEmpty(callable $onEmpty = null) { $this->onEmpty = $onEmpty; } /* * Appends an input to the write buffer. * * @param resource\|string\|int\|float\|bool\|\Traversable\|null $input The input to append as scalar, * stream resource or \Traversable / public function write($input) { if (null === $input) { return; } if ($this->isClosed()) { throw new RuntimeException(sprintf('%s is closed', static::class)); } $this->input[] = ProcessUtils::validateInput(__METHOD__, $input); } /* * Closes the write buffer. / public function close() { $this->open = false; } /* * Tells whether the write buffer is closed or not. / public function isClosed() { return !$this->open; } /* * @return \Traversable */ public function getIterator() { $this->open = true; while ($this->open \|\| $this->input) { if (!$this->input) { yield ''; continue; } $current = array_shift($this->input); if ($current instanceof \Iterator) { yield from $current; } else { yield $current; } if (!$this->input && $this->open && null !== $onEmpty = $this->onEmpty) { $this->write($onEmpty($this)); } } } } Back

Edit File : InputStream.php | Size : 2.25 KB

<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\Process;

use Symfony\Component\Process\Exception\RuntimeException;

/**
 * Provides a way to continuously write to the input of a Process until the InputStream is closed.
 *
 * @author Nicolas Grekas <p@tchwork.com>
 */
class InputStream implements \IteratorAggregate
{
    /** @var callable|null */
    private $onEmpty = null;
    private $input = [];
    private $open = true;

/**
     * Sets a callback that is called when the write buffer becomes empty.
     */
    public function onEmpty(callable $onEmpty = null)
    {
        $this->onEmpty = $onEmpty;
    }

/**
     * Appends an input to the write buffer.
     *
     * @param resource|string|int|float|bool|\Traversable|null $input The input to append as scalar,
     *                                                                stream resource or \Traversable
     */
    public function write($input)
    {
        if (null === $input) {
            return;
        }
        if ($this->isClosed()) {
            throw new RuntimeException(sprintf('%s is closed', static::class));
        }
        $this->input[] = ProcessUtils::validateInput(__METHOD__, $input);
    }

/**
     * Closes the write buffer.
     */
    public function close()
    {
        $this->open = false;
    }

/**
     * Tells whether the write buffer is closed or not.
     */
    public function isClosed()
    {
        return !$this->open;
    }

/**
     * @return \Traversable
     */
    public function getIterator()
    {
        $this->open = true;

while ($this->open || $this->input) {
            if (!$this->input) {
                yield '';
                continue;
            }
            $current = array_shift($this->input);

if ($current instanceof \Iterator) {
                yield from $current;
            } else {
                yield $current;
            }
            if (!$this->input && $this->open && null !== $onEmpty = $this->onEmpty) {
                $this->write($onEmpty($this));
            }
        }
    }
}

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