Classes List

Symfony\Component\Intl\Util\IcuVersion

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<?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\Intl\Util;

/** * Facilitates the comparison of ICU version strings. * * @author Bernhard Schussek <bschussek@gmail.com> */
class IcuVersion
{
    /** * Compares two ICU versions with an operator. * * This method is identical to {@link version_compare()}, except that you * can pass the number of regarded version components in the last argument * $precision. * * Also, a single digit release version and a single digit major version * are contracted to a two digit release version. If no major version * is given, it is substituted by zero. * * Examples: * * IcuVersion::compare('1.2.3', '1.2.4', '==') * // => false * * IcuVersion::compare('1.2.3', '1.2.4', '==', 2) * // => true * * IcuVersion::compare('1.2.3', '12.3', '==') * // => true * * IcuVersion::compare('1', '10', '==') * // => true * * @param string $version1 A version string * @param string $version2 A version string to compare * @param string $operator The comparison operator * @param int|null $precision The number of components to compare. Pass * NULL to compare the versions unchanged. * * @return bool Whether the comparison succeeded * * @see normalize() */
    public static function compare($version1$version2$operator$precision = null)
    {
        $version1 = self::normalize($version1$precision);
        $version2 = self::normalize($version2$precision);

        return version_compare($version1$version2$operator);
    }

    /** * Normalizes a version string to the number of components given in the * parameter $precision. * * A single digit release version and a single digit major version are * contracted to a two digit release version. If no major version is given, * it is substituted by zero. * * Examples: * * IcuVersion::normalize('1.2.3.4'); * // => '12.3.4' * * IcuVersion::normalize('1.2.3.4', 1); * // => '12' * * IcuVersion::normalize('1.2.3.4', 2); * // => '12.3' * * @param string $version An ICU version string * @param int|null $precision The number of components to include. Pass * NULL to return the version unchanged. * * @return string|null the normalized ICU version or NULL if it couldn't be * normalized */
    public static function normalize($version$precision)
    {
        $version = preg_replace('/^(\d)\.(\d)/''$1$2'$version);

        if (1 === strlen($version)) {
            $version .= '0';
        }

        return Version::normalize($version$precision);
    }

    /** * Must not be instantiated. */
    private function __construct()
    {
    }
}