function Svn::binaryVersion

Returns the version of the svn binary contained in PATH

File

vendor/composer/composer/src/Composer/Util/Svn.php, line 355

Class

Svn

@author Till Klampaeckel <till@php.net> @author Jordi Boggiano <j.boggiano@seld.be>

Namespace

Composer\Util

Code

public function binaryVersion() : ?string {
    if (!self::$version) {
        if (0 === $this->process
            ->execute([
            'svn',
            '--version',
        ], $output)) {
            if (Preg::isMatch('{(\\d+(?:\\.\\d+)+)}', $output, $match)) {
                self::$version = $match[1];
            }
        }
    }
    return self::$version;
}