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- Veröffentlicht
- 06.01.2017
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ConsoleOutput.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\Formatter\OutputFormatterInterface;
015
016 /**
017 * ConsoleOutput is the default class for all CLI output. It uses STDOUT.
018 *
019 * This class is a convenient wrapper around `StreamOutput`.
020 *
021 * $output = new ConsoleOutput();
022 *
023 * This is equivalent to:
024 *
025 * $output = new StreamOutput(fopen('php://stdout', 'w'));
026 *
027 * @author Fabien Potencier <fabien@symfony.com>
028 */
029 class ConsoleOutput extends StreamOutput implements ConsoleOutputInterface
030 {
031 /**
032 * @var StreamOutput
033 */
034 private $stderr;
035
036 /**
037 * Constructor.
038 *
039 * @param int $verbosity The verbosity level (one of the VERBOSITY constants in OutputInterface)
040 * @param bool|null $decorated Whether to decorate messages (null for auto-guessing)
041 * @param OutputFormatterInterface|null $formatter Output formatter instance (null to use default OutputFormatter)
042 */
043 public function __construct($verbosity = self::VERBOSITY_NORMAL, $decorated = null, OutputFormatterInterface $formatter = null)
044 {
045 parent::__construct($this->openOutputStream(), $verbosity, $decorated, $formatter);
046
047 $actualDecorated = $this->isDecorated();
048 $this->stderr = new StreamOutput($this->openErrorStream(), $verbosity, $decorated, $this->getFormatter());
049
050 if (null === $decorated) {
051 $this->setDecorated($actualDecorated && $this->stderr->isDecorated());
052 }
053 }
054
055 /**
056 * {@inheritdoc}
057 */
058 public function setDecorated($decorated)
059 {
060 parent::setDecorated($decorated);
061 $this->stderr->setDecorated($decorated);
062 }
063
064 /**
065 * {@inheritdoc}
066 */
067 public function setFormatter(OutputFormatterInterface $formatter)
068 {
069 parent::setFormatter($formatter);
070 $this->stderr->setFormatter($formatter);
071 }
072
073 /**
074 * {@inheritdoc}
075 */
076 public function setVerbosity($level)
077 {
078 parent::setVerbosity($level);
079 $this->stderr->setVerbosity($level);
080 }
081
082 /**
083 * {@inheritdoc}
084 */
085 public function getErrorOutput()
086 {
087 return $this->stderr;
088 }
089
090 /**
091 * {@inheritdoc}
092 */
093 public function setErrorOutput(OutputInterface $error)
094 {
095 $this->stderr = $error;
096 }
097
098 /**
099 * Returns true if current environment supports writing console output to
100 * STDOUT.
101 *
102 * @return bool
103 */
104 protected function hasStdoutSupport()
105 {
106 return false === $this->isRunningOS400();
107 }
108
109 /**
110 * Returns true if current environment supports writing console output to
111 * STDERR.
112 *
113 * @return bool
114 */
115 protected function hasStderrSupport()
116 {
117 return false === $this->isRunningOS400();
118 }
119
120 /**
121 * Checks if current executing environment is IBM iSeries (OS400), which
122 * doesn't properly convert character-encodings between ASCII to EBCDIC.
123 *
124 * @return bool
125 */
126 private function isRunningOS400()
127 {
128 $checks = array(
129 function_exists('php_uname') ? php_uname('s') : '',
130 getenv('OSTYPE'),
131 PHP_OS,
132 );
133
134 return false !== stripos(implode(';', $checks), 'OS400');
135 }
136
137 /**
138 * @return resource
139 */
140 private function openOutputStream()
141 {
142 $outputStream = $this->hasStdoutSupport() ? 'php://stdout' : 'php://output';
143
144 return @fopen($outputStream, 'w') ?: fopen('php://output', 'w');
145 }
146
147 /**
148 * @return resource
149 */
150 private function openErrorStream()
151 {
152 $errorStream = $this->hasStderrSupport() ? 'php://stderr' : 'php://output';
153
154 return fopen($errorStream, 'w');
155 }
156 }
157