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<?php |
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|
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/* |
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* This file is part of the Symfony package. |
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* |
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* (c) Fabien Potencier <fabien@symfony.com> |
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* |
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* For the full copyright and license information, please view the LICENSE |
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* file that was distributed with this source code. |
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*/ |
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|
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namespace Symfony\Component\Console\Output; |
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|
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use Symfony\Component\Console\Exception\InvalidArgumentException; |
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use Symfony\Component\Console\Formatter\OutputFormatterInterface; |
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|
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/** |
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* A BufferedOutput that keeps only the last N chars. |
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* |
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* @author Jérémy Derussé <jeremy@derusse.com> |
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*/ |
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class TrimmedBufferOutput extends Output |
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{ |
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private $maxLength; |
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private $buffer = ''; |
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|
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public function __construct( |
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int $maxLength, |
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?int $verbosity = self::VERBOSITY_NORMAL, |
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bool $decorated = false, |
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OutputFormatterInterface $formatter = null |
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) { |
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if ($maxLength <= 0) { |
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throw new InvalidArgumentException(sprintf('"%s()" expects a strictly positive maxLength. Got %d.', __METHOD__, $maxLength)); |
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} |
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|
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parent::__construct($verbosity, $decorated, $formatter); |
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$this->maxLength = $maxLength; |
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} |
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|
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/** |
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* Empties buffer and returns its content. |
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* |
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* @return string |
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*/ |
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public function fetch() |
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{ |
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$content = $this->buffer; |
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$this->buffer = ''; |
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|
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return $content; |
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} |
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|
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/** |
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* {@inheritdoc} |
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*/ |
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protected function doWrite($message, $newline) |
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{ |
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$this->buffer .= $message; |
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|
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if ($newline) { |
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$this->buffer .= \PHP_EOL; |
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} |
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|
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$this->buffer = substr($this->buffer, 0 - $this->maxLength); |
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} |
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} |
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|
