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
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
|
<?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;
use Symfony\Component\Console\Exception\RuntimeException;
use Symfony\Component\Console\Input\StringInput;
use Symfony\Component\Console\Output\ConsoleOutput;
use Symfony\Component\Process\ProcessBuilder;
use Symfony\Component\Process\PhpExecutableFinder;
/**
* A Shell wraps an Application to add shell capabilities to it.
*
* Support for history and completion only works with a PHP compiled
* with readline support (either --with-readline or --with-libedit)
*
* @deprecated since version 2.8, to be removed in 3.0.
*
* @author Fabien Potencier <fabien@symfony.com>
* @author Martin Hasoň <martin.hason@gmail.com>
*/
class Shell
{
private $application;
private $history;
private $output;
private $hasReadline;
private $processIsolation = false;
/**
* Constructor.
*
* If there is no readline support for the current PHP executable
* a \RuntimeException exception is thrown.
*
* @param Application $application An application instance
*/
public function __construct(Application $application)
{
@trigger_error('The '.__CLASS__.' class is deprecated since Symfony 2.8 and will be removed in 3.0.', E_USER_DEPRECATED);
$this->hasReadline = function_exists('readline');
$this->application = $application;
$this->history = getenv('HOME').'/.history_'.$application->getName();
$this->output = new ConsoleOutput();
}
/**
* Runs the shell.
*/
public function run()
{
$this->application->setAutoExit(false);
$this->application->setCatchExceptions(true);
if ($this->hasReadline) {
readline_read_history($this->history);
readline_completion_function(array($this, 'autocompleter'));
}
$this->output->writeln($this->getHeader());
$php = null;
if ($this->processIsolation) {
$finder = new PhpExecutableFinder();
$php = $finder->find();
$this->output->writeln(<<<'EOF'
<info>Running with process isolation, you should consider this:</info>
* each command is executed as separate process,
* commands don't support interactivity, all params must be passed explicitly,
* commands output is not colorized.
EOF
);
}
while (true) {
$command = $this->readline();
if (false === $command) {
$this->output->writeln("\n");
break;
}
if ($this->hasReadline) {
readline_add_history($command);
readline_write_history($this->history);
}
if ($this->processIsolation) {
$pb = new ProcessBuilder();
$process = $pb
->add($php)
->add($_SERVER['argv'][0])
->add($command)
->inheritEnvironmentVariables(true)
->getProcess()
;
$output = $this->output;
$process->run(function ($type, $data) use ($output) {
$output->writeln($data);
});
$ret = $process->getExitCode();
} else {
$ret = $this->application->run(new StringInput($command), $this->output);
}
if (0 !== $ret) {
$this->output->writeln(sprintf('<error>The command terminated with an error status (%s)</error>', $ret));
}
}
}
/**
* Returns the shell header.
*
* @return string The header string
*/
protected function getHeader()
{
return <<<EOF
Welcome to the <info>{$this->application->getName()}</info> shell (<comment>{$this->application->getVersion()}</comment>).
At the prompt, type <comment>help</comment> for some help,
or <comment>list</comment> to get a list of available commands.
To exit the shell, type <comment>^D</comment>.
EOF;
}
/**
* Renders a prompt.
*
* @return string The prompt
*/
protected function getPrompt()
{
// using the formatter here is required when using readline
return $this->output->getFormatter()->format($this->application->getName().' > ');
}
protected function getOutput()
{
return $this->output;
}
protected function getApplication()
{
return $this->application;
}
/**
* Tries to return autocompletion for the current entered text.
*
* @param string $text The last segment of the entered text
*
* @return bool|array A list of guessed strings or true
*/
private function autocompleter($text)
{
$info = readline_info();
$text = substr($info['line_buffer'], 0, $info['end']);
if ($info['point'] !== $info['end']) {
return true;
}
// task name?
if (false === strpos($text, ' ') || !$text) {
return array_keys($this->application->all());
}
// options and arguments?
try {
$command = $this->application->find(substr($text, 0, strpos($text, ' ')));
} catch (\Exception $e) {
return true;
}
$list = array('--help');
foreach ($command->getDefinition()->getOptions() as $option) {
$list[] = '--'.$option->getName();
}
return $list;
}
/**
* Reads a single line from standard input.
*
* @return string The single line from standard input
*/
private function readline()
{
if ($this->hasReadline) {
$line = readline($this->getPrompt());
} else {
$this->output->write($this->getPrompt());
$line = fgets(STDIN, 1024);
$line = (false === $line || '' === $line) ? false : rtrim($line);
}
return $line;
}
public function getProcessIsolation()
{
return $this->processIsolation;
}
public function setProcessIsolation($processIsolation)
{
$this->processIsolation = (bool) $processIsolation;
if ($this->processIsolation && !class_exists('Symfony\\Component\\Process\\Process')) {
throw new RuntimeException('Unable to isolate processes as the Symfony Process Component is not installed.');
}
}
}
|
