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- 28.08.2024
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StreamOutput.php
001 <?php
002
003 /*
004 * This file is part of the Symfony package.
005 *
006 * (c) Fabien Potencier <fabien@symfony.com>
007 *
008 * For the full copyright and license information, please view the LICENSE
009 * file that was distributed with this source code.
010 */
011
012 namespace Symfony\Component\Console\Output;
013
014 use Symfony\Component\Console\Exception\InvalidArgumentException;
015 use Symfony\Component\Console\Formatter\OutputFormatterInterface;
016
017 /**
018 * StreamOutput writes the output to a given stream.
019 *
020 * Usage:
021 *
022 * $output = new StreamOutput(fopen('php://stdout', 'w'));
023 *
024 * As `StreamOutput` can use any stream, you can also use a file:
025 *
026 * $output = new StreamOutput(fopen('/path/to/output.log', 'a', false));
027 *
028 * @author Fabien Potencier <fabien@symfony.com>
029 */
030 class StreamOutput extends Output
031 {
032 private $stream;
033
034 /**
035 * @param resource $stream A stream resource
036 * @param int $verbosity The verbosity level (one of the VERBOSITY constants in OutputInterface)
037 * @param bool|null $decorated Whether to decorate messages (null for auto-guessing)
038 * @param OutputFormatterInterface|null $formatter Output formatter instance (null to use default OutputFormatter)
039 *
040 * @throws InvalidArgumentException When first argument is not a real stream
041 */
042 public function __construct($stream, $verbosity = self::VERBOSITY_NORMAL, $decorated = null, OutputFormatterInterface $formatter = null)
043 {
044 if (!\is_resource($stream) || 'stream' !== get_resource_type($stream)) {
045 throw new InvalidArgumentException('The StreamOutput class needs a stream as its first argument.');
046 }
047
048 $this->stream = $stream;
049
050 if (null === $decorated) {
051 $decorated = $this->hasColorSupport();
052 }
053
054 parent::__construct($verbosity, $decorated, $formatter);
055 }
056
057 /**
058 * Gets the stream attached to this StreamOutput instance.
059 *
060 * @return resource A stream resource
061 */
062 public function getStream()
063 {
064 return $this->stream;
065 }
066
067 /**
068 * {@inheritdoc}
069 */
070 protected function doWrite($message, $newline)
071 {
072 if ($newline) {
073 $message .= \PHP_EOL;
074 }
075
076 @fwrite($this->stream, $message);
077
078 fflush($this->stream);
079 }
080
081 /**
082 * Returns true if the stream supports colorization.
083 *
084 * Colorization is disabled if not supported by the stream:
085 *
086 * This is tricky on Windows, because Cygwin, Msys2 etc emulate pseudo
087 * terminals via named pipes, so we can only check the environment.
088 *
089 * Reference: Composer\XdebugHandler\Process::supportsColor
090 * https://github.com/composer/xdebug-handler
091 *
092 * @return bool true if the stream supports colorization, false otherwise
093 */
094 protected function hasColorSupport()
095 {
096 if ('Hyper' === getenv('TERM_PROGRAM')) {
097 return true;
098 }
099
100 if (\DIRECTORY_SEPARATOR === '\\') {
101 return (\function_exists('sapi_windows_vt100_support')
102 && @sapi_windows_vt100_support($this->stream))
103 || false !== getenv('ANSICON')
104 || 'ON' === getenv('ConEmuANSI')
105 || 'xterm' === getenv('TERM');
106 }
107
108 if (\function_exists('stream_isatty')) {
109 return @stream_isatty($this->stream);
110 }
111
112 if (\function_exists('posix_isatty')) {
113 return @posix_isatty($this->stream);
114 }
115
116 $stat = @fstat($this->stream);
117 // Check if formatted mode is S_IFCHR
118 return $stat ? 0020000 === ($stat['mode'] & 0170000) : false;
119 }
120 }
121