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Diffstat (limited to 'vendor/symfony/intl/Symfony/Component/Intl/Util/Version.php')
-rw-r--r-- | vendor/symfony/intl/Symfony/Component/Intl/Util/Version.php | 96 |
1 files changed, 96 insertions, 0 deletions
diff --git a/vendor/symfony/intl/Symfony/Component/Intl/Util/Version.php b/vendor/symfony/intl/Symfony/Component/Intl/Util/Version.php new file mode 100644 index 00000000..5f6a4337 --- /dev/null +++ b/vendor/symfony/intl/Symfony/Component/Intl/Util/Version.php | |||
@@ -0,0 +1,96 @@ | |||
1 | <?php | ||
2 | |||
3 | /* | ||
4 | * This file is part of the Symfony package. | ||
5 | * | ||
6 | * (c) Fabien Potencier <fabien@symfony.com> | ||
7 | * | ||
8 | * For the full copyright and license information, please view the LICENSE | ||
9 | * file that was distributed with this source code. | ||
10 | */ | ||
11 | |||
12 | namespace Symfony\Component\Intl\Util; | ||
13 | |||
14 | /** | ||
15 | * Facilitates the comparison of version strings. | ||
16 | * | ||
17 | * @author Bernhard Schussek <bschussek@gmail.com> | ||
18 | */ | ||
19 | class Version | ||
20 | { | ||
21 | /** | ||
22 | * Compares two versions with an operator. | ||
23 | * | ||
24 | * This method is identical to {@link version_compare()}, except that you | ||
25 | * can pass the number of regarded version components in the last argument | ||
26 | * $precision. | ||
27 | * | ||
28 | * Examples: | ||
29 | * | ||
30 | * Version::compare('1.2.3', '1.2.4', '==') | ||
31 | * // => false | ||
32 | * | ||
33 | * Version::compare('1.2.3', '1.2.4', '==', 2) | ||
34 | * // => true | ||
35 | * | ||
36 | * @param string $version1 A version string. | ||
37 | * @param string $version2 A version string to compare. | ||
38 | * @param string $operator The comparison operator. | ||
39 | * @param integer|null $precision The number of components to compare. Pass | ||
40 | * NULL to compare the versions unchanged. | ||
41 | * | ||
42 | * @return Boolean Whether the comparison succeeded. | ||
43 | * | ||
44 | * @see normalize() | ||
45 | */ | ||
46 | public static function compare($version1, $version2, $operator, $precision = null) | ||
47 | { | ||
48 | $version1 = self::normalize($version1, $precision); | ||
49 | $version2 = self::normalize($version2, $precision); | ||
50 | |||
51 | return version_compare($version1, $version2, $operator); | ||
52 | } | ||
53 | |||
54 | /** | ||
55 | * Normalizes a version string to the number of components given in the | ||
56 | * parameter $precision. | ||
57 | * | ||
58 | * Examples: | ||
59 | * | ||
60 | * Version::normalize('1.2.3', 1); | ||
61 | * // => '1' | ||
62 | * | ||
63 | * Version::normalize('1.2.3', 2); | ||
64 | * // => '1.2' | ||
65 | * | ||
66 | * @param string $version A version string. | ||
67 | * @param integer|null $precision The number of components to include. Pass | ||
68 | * NULL to return the version unchanged. | ||
69 | * | ||
70 | * @return string|null The normalized version or NULL if it couldn't be | ||
71 | * normalized. | ||
72 | */ | ||
73 | public static function normalize($version, $precision) | ||
74 | { | ||
75 | if (null === $precision) { | ||
76 | return $version; | ||
77 | } | ||
78 | |||
79 | $pattern = '[^\.]+'; | ||
80 | |||
81 | for ($i = 2; $i <= $precision; ++$i) { | ||
82 | $pattern = sprintf('[^\.]+(\.%s)?', $pattern); | ||
83 | } | ||
84 | |||
85 | if (!preg_match('/^' . $pattern . '/', $version, $matches)) { | ||
86 | return null; | ||
87 | } | ||
88 | |||
89 | return $matches[0]; | ||
90 | } | ||
91 | |||
92 | /** | ||
93 | * Must not be instantiated. | ||
94 | */ | ||
95 | private function __construct() {} | ||
96 | } | ||