metricool / vendor / _scoped / symfony / translation / Loader / MoFileLoader.php

MoFileLoader.php in Metricool – Social media and site statistics 2.1.1, at vendor/_scoped/symfony/translation/Loader/MoFileLoader.php

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1	<?php
2
3	/*
4	* This file is part of the Symfony package.
5	*
6	* (c) Fabien Potencier <[email protected]>
7	*
8	* For the full copyright and license information, please view the LICENSE
9	* file that was distributed with this source code.
10	*/
11	namespace Metricool\Vendor\Symfony\Component\Translation\Loader;
12
13	use Metricool\Vendor\Symfony\Component\Translation\Exception\InvalidResourceException;
14	/**
15	* @copyright Copyright (c) 2010, Union of RAD http://union-of-rad.org (http://lithify.me/)
16	*/
17	class MoFileLoader extends FileLoader
18	{
19	/**
20	* Magic used for validating the format of an MO file as well as
21	* detecting if the machine used to create that file was little endian.
22	*/
23	public const MO_LITTLE_ENDIAN_MAGIC = 0x950412de;
24	/**
25	* Magic used for validating the format of an MO file as well as
26	* detecting if the machine used to create that file was big endian.
27	*/
28	public const MO_BIG_ENDIAN_MAGIC = 0xde120495;
29	/**
30	* The size of the header of an MO file in bytes.
31	*/
32	public const MO_HEADER_SIZE = 28;
33	/**
34	* Parses machine object (MO) format, independent of the machine's endian it
35	* was created on. Both 32bit and 64bit systems are supported.
36	*
37	* {@inheritdoc}
38	*/
39	protected function loadResource(string $resource)
40	{
41	$stream = fopen($resource, 'r');
42	$stat = fstat($stream);
43	if ($stat['size'] < self::MO_HEADER_SIZE) {
44	throw new InvalidResourceException('MO stream content has an invalid format.');
45	}
46	$magic = unpack('V1', fread($stream, 4));
47	$magic = hexdec(substr(dechex(current($magic)), -8));
48	if (self::MO_LITTLE_ENDIAN_MAGIC == $magic) {
49	$isBigEndian = \false;
50	} elseif (self::MO_BIG_ENDIAN_MAGIC == $magic) {
51	$isBigEndian = \true;
52	} else {
53	throw new InvalidResourceException('MO stream content has an invalid format.');
54	}
55	// formatRevision
56	$this->readLong($stream, $isBigEndian);
57	$count = $this->readLong($stream, $isBigEndian);
58	$offsetId = $this->readLong($stream, $isBigEndian);
59	$offsetTranslated = $this->readLong($stream, $isBigEndian);
60	// sizeHashes
61	$this->readLong($stream, $isBigEndian);
62	// offsetHashes
63	$this->readLong($stream, $isBigEndian);
64	$messages = [];
65	for ($i = 0; $i < $count; ++$i) {
66	$pluralId = null;
67	$translated = null;
68	fseek($stream, $offsetId + $i * 8);
69	$length = $this->readLong($stream, $isBigEndian);
70	$offset = $this->readLong($stream, $isBigEndian);
71	if ($length < 1) {
72	continue;
73	}
74	fseek($stream, $offset);
75	$singularId = fread($stream, $length);
76	if (str_contains($singularId, "\x00")) {
77	[$singularId, $pluralId] = explode("\x00", $singularId);
78	}
79	fseek($stream, $offsetTranslated + $i * 8);
80	$length = $this->readLong($stream, $isBigEndian);
81	$offset = $this->readLong($stream, $isBigEndian);
82	if ($length < 1) {
83	continue;
84	}
85	fseek($stream, $offset);
86	$translated = fread($stream, $length);
87	if (str_contains($translated, "\x00")) {
88	$translated = explode("\x00", $translated);
89	}
90	$ids = ['singular' => $singularId, 'plural' => $pluralId];
91	$item = compact('ids', 'translated');
92	if (!empty($item['ids']['singular'])) {
93	$id = $item['ids']['singular'];
94	if (isset($item['ids']['plural'])) {
95	$id .= '\|' . $item['ids']['plural'];
96	}
97	$messages[$id] = stripcslashes(implode('\|', (array) $item['translated']));
98	}
99	}
100	fclose($stream);
101	return array_filter($messages);
102	}
103	/**
104	* Reads an unsigned long from stream respecting endianness.
105	*
106	* @param resource $stream
107	*/
108	private function readLong($stream, bool $isBigEndian): int
109	{
110	$result = unpack($isBigEndian ? 'N1' : 'V1', fread($stream, 4));
111	$result = current($result);
112	return (int) substr($result, -8);
113	}
114	}
115