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<?php |
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namespace PackageVersions; |
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use Composer\Composer; |
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use Composer\EventDispatcher\EventSubscriberInterface; |
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use Composer\IO\IOInterface; |
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use Composer\Package\Locker; |
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use Composer\Package\RootPackageInterface; |
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use Composer\Plugin\PluginInterface; |
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use Composer\Script\Event; |
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use Composer\Script\ScriptEvents; |
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final class Installer implements PluginInterface, EventSubscriberInterface |
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{ |
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private static $generatedClassTemplate = <<<'PHP' |
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<?php |
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namespace PackageVersions; |
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/** |
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* This class is generated by ocramius/package-versions, specifically by |
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* @see \PackageVersions\Installer |
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* |
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* This file is overwritten at every run of `composer install` or `composer update`. |
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*/ |
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final class Versions |
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{ |
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const VERSIONS = %s; |
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private function __construct() |
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{ |
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} |
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/** |
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* @throws \OutOfBoundsException if a version cannot be located |
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*/ |
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public static function getVersion(string $packageName) : string |
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{ |
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if (! isset(self::VERSIONS[$packageName])) { |
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throw new \OutOfBoundsException( |
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'Required package "' . $packageName . '" is not installed: cannot detect its version' |
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); |
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} |
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return self::VERSIONS[$packageName]; |
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} |
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} |
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PHP; |
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/** |
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* {@inheritDoc} |
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*/ |
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public function activate(Composer $composer, IOInterface $io) |
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{ |
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$composer->getEventDispatcher()->addSubscriber($this); |
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} |
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/** |
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* {@inheritDoc} |
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*/ |
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public static function getSubscribedEvents() |
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{ |
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return [ |
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ScriptEvents::POST_INSTALL_CMD => 'dumpVersionsClass', |
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ScriptEvents::POST_UPDATE_CMD => 'dumpVersionsClass', |
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]; |
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} |
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/** |
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* @param Event $composerEvent |
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* |
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* @return void |
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*/ |
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public static function dumpVersionsClass(Event $composerEvent) |
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{ |
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$io = $composerEvent->getIO(); |
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if (substr(__DIR__, 0, 7) === 'phar://') { |
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// You can't write to phar, exit early to prevent errors. |
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// This happens if you require the same package twice! |
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$io->write('<info>Skip generating version class</info>'); |
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return; |
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} |
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$io->write('<info>Generating version class...</info>'); |
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$composer = $composerEvent->getComposer(); |
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self::writeVersionClassToFile(self::generateVersionsClass($composer)); |
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self::reDumpAutoloader($composer); |
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$io->write('<info>...done generating version class</info>'); |
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} |
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private static function generateVersionsClass(Composer $composer) : string |
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{ |
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return sprintf( |
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self::$generatedClassTemplate, |
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var_export(iterator_to_array(self::getVersions($composer->getLocker(), $composer->getPackage())), true) |
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); |
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} |
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/** |
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* @param string $versionClassSource |
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* |
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* @return void |
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*/ |
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private static function writeVersionClassToFile(string $versionClassSource) |
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{ |
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file_put_contents(__DIR__ . '/Versions.php', $versionClassSource, 0664); |
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} |
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/** |
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* @param Composer $composer |
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* |
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* @return void |
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*/ |
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private static function reDumpAutoloader(Composer $composer) |
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{ |
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$composer->getAutoloadGenerator()->dump( |
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$composer->getConfig(), |
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$composer->getRepositoryManager()->getLocalRepository(), |
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$composer->getPackage(), |
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$composer->getInstallationManager(), |
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'composer', |
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true // CBA to provide this manually, for now |
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); |
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} |
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/** |
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* @param Locker $locker |
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* @param RootPackageInterface $rootPackage |
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* |
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* @return \Generator|\string[] |
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*/ |
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private static function getVersions(Locker $locker, RootPackageInterface $rootPackage) : \Generator |
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{ |
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$lockData = $locker->getLockData(); |
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foreach (array_merge($lockData['packages'], $lockData['packages-dev']) as $package) { |
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yield $package['name'] |
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=> $package['version'] . '@' . $package['source']['reference']; |
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} |
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yield $rootPackage->getName() => $rootPackage->getVersion() . '@' . $rootPackage->getSourceReference(); |
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} |
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} |
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Ocramius /
PackageVersions
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