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- Veröffentlicht
- 28.08.2024
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FileWriterGeneratorStrategy.php
01 <?php
02
03 declare(strict_types=1);
04
05 namespace ProxyManager\GeneratorStrategy;
06
07 use ProxyManager\Exception\FileNotWritableException;
08 use ProxyManager\FileLocator\FileLocatorInterface;
09 use Zend\Code\Generator\ClassGenerator;
10
11 /**
12 * Generator strategy that writes the generated classes to disk while generating them
13 *
14 * {@inheritDoc}
15 *
16 * @author Marco Pivetta <ocramius@gmail.com>
17 * @license MIT
18 */
19 class FileWriterGeneratorStrategy implements GeneratorStrategyInterface
20 {
21 /**
22 * @var \ProxyManager\FileLocator\FileLocatorInterface
23 */
24 protected $fileLocator;
25
26 /**
27 * @var callable
28 */
29 private $emptyErrorHandler;
30
31 /**
32 * @param \ProxyManager\FileLocator\FileLocatorInterface $fileLocator
33 */
34 public function __construct(FileLocatorInterface $fileLocator)
35 {
36 $this->fileLocator = $fileLocator;
37 $this->emptyErrorHandler = function () {
38 };
39 }
40
41 /**
42 * Write generated code to disk and return the class code
43 *
44 * {@inheritDoc}
45 *
46 * @throws FileNotWritableException
47 */
48 public function generate(ClassGenerator $classGenerator) : string
49 {
50 $className = trim($classGenerator->getNamespaceName(), '\\')
51 . '\\' . trim($classGenerator->getName(), '\\');
52 $generatedCode = $classGenerator->generate();
53 $fileName = $this->fileLocator->getProxyFileName($className);
54
55 set_error_handler($this->emptyErrorHandler);
56
57 try {
58 $this->writeFile("<?php\n\n" . $generatedCode, $fileName);
59
60 return $generatedCode;
61 } finally {
62 restore_error_handler();
63 }
64 }
65
66 /**
67 * Writes the source file in such a way that race conditions are avoided when the same file is written
68 * multiple times in a short time period
69 *
70 * @param string $source
71 * @param string $location
72 *
73 * @throws FileNotWritableException
74 */
75 private function writeFile(string $source, string $location) : void
76 {
77 $tmpFileName = tempnam($location, 'temporaryProxyManagerFile');
78
79 file_put_contents($tmpFileName, $source);
80 chmod($tmpFileName, 0666 & ~umask());
81
82 if (! rename($tmpFileName, $location)) {
83 unlink($tmpFileName);
84
85 throw FileNotWritableException::fromInvalidMoveOperation($tmpFileName, $location);
86 }
87 }
88 }
89