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<?php |
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/** |
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* @package: chapi |
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* |
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* @author: msiebeneicher |
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* @since: 2015-07-21 |
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* |
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*/ |
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namespace Chapi\Commands; |
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use Chapi\Component\Command\CommandUtils; |
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use Symfony\Component\Config\FileLocator; |
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use Symfony\Component\Console\Command\Command; |
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use Symfony\Component\Console\Input\InputInterface; |
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use Symfony\Component\Console\Output\OutputInterface; |
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use Symfony\Component\DependencyInjection\ContainerBuilder; |
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use Symfony\Component\DependencyInjection\Loader\YamlFileLoader; |
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abstract class AbstractCommand extends Command |
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{ |
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const FOLDER_RESOURCES = '/../../app/Resources/config/'; |
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/** |
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* @var InputInterface |
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*/ |
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protected $oInput; |
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/** |
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* @var OutputInterface |
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*/ |
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protected $oOutput; |
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/** |
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* @var ContainerBuilder |
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*/ |
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private static $oContainer; |
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/** |
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* @var string |
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*/ |
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private static $sHomeDir = ''; |
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/** |
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* Executes the current command. |
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* |
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* This method is not abstract because you can use this class |
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* as a concrete class. In this case, instead of defining the |
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* execute() method, you set the code to execute by passing |
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* a Closure to the setCode() method. |
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* |
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* @param InputInterface $oInput An InputInterface instance |
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* @param OutputInterface $oOutput An OutputInterface instance |
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* |
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* @return integer null or 0 if everything went fine, or an error code |
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* |
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* @throws \LogicException When this abstract method is not implemented |
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* |
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* @see setCode() |
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*/ |
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protected function execute(InputInterface $oInput, OutputInterface $oOutput) |
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{ |
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$this->oInput = $oInput; |
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$this->oOutput = $oOutput; |
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if (!$this->isAppRunable()) |
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{ |
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return 1; |
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} |
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// set output for verbosity handling |
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/** @var \Symfony\Bridge\Monolog\Handler\ConsoleHandler $_oConsoleHandler */ |
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$_oConsoleHandler = $this->getContainer()->get('ConsoleHandler'); |
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$_oConsoleHandler->setOutput($this->oOutput); |
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return $this->process(); |
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} |
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/** |
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* @return int |
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*/ |
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abstract protected function process(); |
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/** |
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* @return ContainerBuilder |
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*/ |
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protected function getContainer() |
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{ |
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if (is_null(self::$oContainer)) |
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{ |
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$_oContainer = new ContainerBuilder(); |
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// load local parameters |
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if (file_exists($this->getHomeDir() . DIRECTORY_SEPARATOR . 'parameters.yml')) |
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{ |
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$_oLoader = new YamlFileLoader($_oContainer, new FileLocator($this->getHomeDir())); |
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$_oLoader->load('parameters.yml'); |
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} |
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// load optional parameter in the current working directory |
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$_sWorkingDir = getcwd(); |
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if (file_exists($_sWorkingDir . DIRECTORY_SEPARATOR . '.chapiconfig')) |
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{ |
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$_oLoader = new YamlFileLoader($_oContainer, new FileLocator($_sWorkingDir)); |
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$_oLoader->load('.chapiconfig'); |
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} |
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// load services |
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$_oLoader = new YamlFileLoader($_oContainer, new FileLocator(__DIR__ . self::FOLDER_RESOURCES)); |
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$_oLoader->load('services.yml'); |
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self::$oContainer = $_oContainer; |
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} |
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return self::$oContainer; |
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} |
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/** |
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* @return bool |
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*/ |
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protected function isAppRunable() |
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{ |
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if ( |
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!file_exists($this->getHomeDir() . DIRECTORY_SEPARATOR . 'parameters.yml') |
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AND !file_exists(getcwd() . DIRECTORY_SEPARATOR . '.chapiconfig') |
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) // one file have to exist |
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{ |
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$this->oOutput->writeln(sprintf( |
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'<error>%s</error>', |
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'No parameter file found. Please run "configure" command for initial setup or add a local `.chapiconfig` to your working directory.' |
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)); |
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return false; |
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} |
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return true; |
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} |
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/** |
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* @return string |
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*/ |
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2 |
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protected function getHomeDir() |
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{ |
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if (!empty(self::$sHomeDir)) |
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2 |
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{ |
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return self::$sHomeDir; |
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} |
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1 |
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$_sHomeDir = getenv('CHAPI_HOME'); |
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1 |
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if (!$_sHomeDir) |
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{ |
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$_sHomeDir = CommandUtils::getOsHomeDir() . DIRECTORY_SEPARATOR . '.chapi'; |
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} |
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CommandUtils::hasCreateDirectoryIfNotExists($_sHomeDir); |
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return self::$sHomeDir = $_sHomeDir; |
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} |
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/** |
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* @return string |
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*/ |
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protected function getCacheDir() |
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{ |
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$_sCacheDir = $this->getHomeDir() . DIRECTORY_SEPARATOR . 'cache'; |
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CommandUtils::hasCreateDirectoryIfNotExists($_sCacheDir); |
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1 |
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return $_sCacheDir; |
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} |
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} |
trivago /
chapi
PHP has two types of connecting operators (logical operators, and boolean operators):
and&&or||The difference between these is the order in which they are executed. In most cases, you would want to use a boolean operator like
&&, or||.Let’s take a look at a few examples:
Logical Operators are used for Control-Flow
One case where you explicitly want to use logical operators is for control-flow such as this:
Since
dieintroduces problems of its own, f.e. it makes our code hardly testable, and prevents any kind of more sophisticated error handling; you probably do not want to use this in real-world code. Unfortunately, logical operators cannot be combined withthrowat this point:These limitations lead to logical operators rarely being of use in current PHP code.