106 lines
3.3 KiB
PHP
106 lines
3.3 KiB
PHP
<?php
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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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namespace Symfony\Component\Console\Output;
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use Symfony\Component\Console\Exception\InvalidArgumentException;
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use Symfony\Component\Console\Exception\RuntimeException;
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use Symfony\Component\Console\Formatter\OutputFormatterInterface;
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/**
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* StreamOutput writes the output to a given stream.
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*
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* Usage:
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*
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* $output = new StreamOutput(fopen('php://stdout', 'w'));
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*
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* As `StreamOutput` can use any stream, you can also use a file:
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*
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* $output = new StreamOutput(fopen('/path/to/output.log', 'a', false));
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*
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* @author Fabien Potencier <fabien@symfony.com>
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*/
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class StreamOutput extends Output
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{
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private $stream;
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/**
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* Constructor.
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*
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* @param resource $stream A stream resource
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* @param int $verbosity The verbosity level (one of the VERBOSITY constants in OutputInterface)
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* @param bool|null $decorated Whether to decorate messages (null for auto-guessing)
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* @param OutputFormatterInterface|null $formatter Output formatter instance (null to use default OutputFormatter)
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*
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* @throws InvalidArgumentException When first argument is not a real stream
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*/
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public function __construct($stream, $verbosity = self::VERBOSITY_NORMAL, $decorated = null, OutputFormatterInterface $formatter = null)
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{
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if (!is_resource($stream) || 'stream' !== get_resource_type($stream)) {
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throw new InvalidArgumentException('The StreamOutput class needs a stream as its first argument.');
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}
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$this->stream = $stream;
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if (null === $decorated) {
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$decorated = $this->hasColorSupport();
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}
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parent::__construct($verbosity, $decorated, $formatter);
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}
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/**
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* Gets the stream attached to this StreamOutput instance.
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*
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* @return resource A stream resource
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*/
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public function getStream()
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{
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return $this->stream;
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}
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/**
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* {@inheritdoc}
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*/
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protected function doWrite($message, $newline)
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{
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if (false === @fwrite($this->stream, $message) || ($newline && (false === @fwrite($this->stream, PHP_EOL)))) {
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// should never happen
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throw new RuntimeException('Unable to write output.');
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}
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fflush($this->stream);
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}
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/**
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* Returns true if the stream supports colorization.
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*
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* Colorization is disabled if not supported by the stream:
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*
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* - Windows != 10.0.10586 without Ansicon, ConEmu or Mintty
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* - non tty consoles
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*
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* @return bool true if the stream supports colorization, false otherwise
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*/
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protected function hasColorSupport()
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{
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if (DIRECTORY_SEPARATOR === '\\') {
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return
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'10.0.10586' === PHP_WINDOWS_VERSION_MAJOR.'.'.PHP_WINDOWS_VERSION_MINOR.'.'.PHP_WINDOWS_VERSION_BUILD
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|| false !== getenv('ANSICON')
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|| 'ON' === getenv('ConEmuANSI')
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|| 'xterm' === getenv('TERM');
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}
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return function_exists('posix_isatty') && @posix_isatty($this->stream);
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}
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}
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