StreamOutput.php
3.05 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
<?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\Console\Output;
use Symfony\Component\Console\Exception\InvalidArgumentException;
use Symfony\Component\Console\Exception\RuntimeException;
use Symfony\Component\Console\Formatter\OutputFormatterInterface;
/**
* StreamOutput writes the output to a given stream.
*
* Usage:
*
* $output = new StreamOutput(fopen('php://stdout', 'w'));
*
* As `StreamOutput` can use any stream, you can also use a file:
*
* $output = new StreamOutput(fopen('/path/to/output.log', 'a', false));
*
* @author Fabien Potencier <fabien@symfony.com>
*/
class StreamOutput extends Output
{
private $stream;
/**
* Constructor.
*
* @param resource $stream A stream resource
* @param int $verbosity The verbosity level (one of the VERBOSITY constants in OutputInterface)
* @param bool|null $decorated Whether to decorate messages (null for auto-guessing)
* @param OutputFormatterInterface|null $formatter Output formatter instance (null to use default OutputFormatter)
*
* @throws InvalidArgumentException When first argument is not a real stream
*/
public function __construct($stream, $verbosity = self::VERBOSITY_NORMAL, $decorated = null, OutputFormatterInterface $formatter = null)
{
if (!is_resource($stream) || 'stream' !== get_resource_type($stream)) {
throw new InvalidArgumentException('The StreamOutput class needs a stream as its first argument.');
}
$this->stream = $stream;
if (null === $decorated) {
$decorated = $this->hasColorSupport();
}
parent::__construct($verbosity, $decorated, $formatter);
}
/**
* Gets the stream attached to this StreamOutput instance.
*
* @return resource A stream resource
*/
public function getStream()
{
return $this->stream;
}
/**
* {@inheritdoc}
*/
protected function doWrite($message, $newline)
{
if (false === @fwrite($this->stream, $message.($newline ? PHP_EOL : ''))) {
// should never happen
throw new RuntimeException('Unable to write output.');
}
fflush($this->stream);
}
/**
* Returns true if the stream supports colorization.
*
* Colorization is disabled if not supported by the stream:
*
* - Windows without Ansicon, ConEmu or Mintty
* - non tty consoles
*
* @return bool true if the stream supports colorization, false otherwise
*/
protected function hasColorSupport()
{
if (DIRECTORY_SEPARATOR === '\\') {
return false !== getenv('ANSICON') || 'ON' === getenv('ConEmuANSI') || 'xterm' === getenv('TERM');
}
return function_exists('posix_isatty') && @posix_isatty($this->stream);
}
}